From 665b5d6885122d7a95afd8de93e565f577cfc7e6 Mon Sep 17 00:00:00 2001
From: Ceilzcx <1758619238@qq.com>
Date: Tue, 8 Nov 2022 20:28:29 +0800
Subject: [PATCH 01/22] prometheus exporter metrics parser

---
 collector/pom.xml                             |   2 +-
 .../http/promethus/ParseException.java        |  12 +
 .../promethus/exporter/ExporterParser.java    | 313 ++++++++++++++++++
 .../http/promethus/exporter/MetricFamily.java |  49 +++
 .../http/promethus/exporter/MetricType.java   |  32 ++
 5 files changed, 407 insertions(+), 1 deletion(-)
 create mode 100644 collector/src/main/java/com/usthe/collector/collect/http/promethus/ParseException.java
 create mode 100644 collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java
 create mode 100644 collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/MetricFamily.java
 create mode 100644 collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/MetricType.java

diff --git a/collector/pom.xml b/collector/pom.xml
index 665e549d46d..b2e91abe774 100644
--- a/collector/pom.xml
+++ b/collector/pom.xml
@@ -47,7 +47,7 @@
             <groupId>com.usthe.tancloud</groupId>
             <artifactId>common</artifactId>
             <version>1.0</version>
-            <scope>provided</scope>
+<!--            <scope>provided</scope>-->
         </dependency>
         <!-- etcd -->
         <dependency>
diff --git a/collector/src/main/java/com/usthe/collector/collect/http/promethus/ParseException.java b/collector/src/main/java/com/usthe/collector/collect/http/promethus/ParseException.java
new file mode 100644
index 00000000000..5b6c6408eb6
--- /dev/null
+++ b/collector/src/main/java/com/usthe/collector/collect/http/promethus/ParseException.java
@@ -0,0 +1,12 @@
+package com.usthe.collector.collect.http.promethus;
+
+/**
+ * @author ceilzcx
+ * @since 7/11/2022
+ */
+public class ParseException extends RuntimeException {
+
+    public ParseException(String msg) {
+        super(msg);
+    }
+}
diff --git a/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java
new file mode 100644
index 00000000000..dc554d9c546
--- /dev/null
+++ b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java
@@ -0,0 +1,313 @@
+package com.usthe.collector.collect.http.promethus.exporter;
+
+import com.usthe.collector.collect.http.promethus.ParseException;
+import com.usthe.common.util.Pair;
+import lombok.extern.slf4j.Slf4j;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+
+/**
+ * @author ceilzcx
+ * @since 7/11/2022
+ * 参考: prometheus的text_parse.go的代码, 入口: TextToMetricFamilies
+ * todo 使用String.subString()的方式会生成很多的对象，后续改为buffer
+ */
+@Slf4j
+public class ExporterParser {
+    private static final String HELP = "HELP";
+    private static final String TYPE = "TYPE";
+
+    private static final String QUANTILE_LABEL = "quantile";
+    private static final String BUCKET_LABEL = "le";
+
+    public Map<String, MetricFamily> textToMetric(String resp) {
+        // key: metric name, value: metric family
+        Map<String, MetricFamily> metricMap = new ConcurrentHashMap<>();
+        String[] lines = resp.split("\n");
+        for (String line : lines) {
+            this.parseLine(metricMap, line);
+        }
+        return metricMap;
+    }
+
+    private void parseLine(Map<String, MetricFamily> metricMap, String line) {
+        line = this.skipBlankTab(line);
+        if (line == null) return;
+        switch (line.charAt(0)) {
+            case '#':
+                this.parseComment(metricMap, line.substring(1));
+                break;
+            case '\n':
+                break;
+            default:
+                this.parseMetric(metricMap, line);
+        }
+    }
+
+    private void parseComment(Map<String, MetricFamily> metricMap, String line) {
+        line = this.skipBlankTab(line);
+        if (line == null) return;
+        Pair<String, String> pair = this.readTokenUnitWhitespace(line);
+        String token = pair.getLeft();
+        String subLine = pair.getRight();
+        if (!token.equals(HELP) && !token.equals(TYPE)) {
+            // handle
+            return;
+        }
+        pair = this.readTokenAsMetricName(subLine);
+        String metricName = pair.getLeft();
+        MetricFamily metricFamily = metricMap.computeIfAbsent(metricName, key -> new MetricFamily());
+        metricFamily.setName(metricName);
+        subLine = pair.getRight();
+        switch (token) {
+            case HELP:
+                this.parseHelp(metricFamily, subLine);
+                break;
+            case TYPE:
+                this.parseType(metricFamily, subLine);
+                break;
+            default:
+        }
+    }
+
+    private void parseHelp(MetricFamily metricFamily, String line) {
+        metricFamily.setHelp(this.skipBlankTab(line));
+    }
+
+    private void parseType(MetricFamily metricFamily, String line) {
+        String type = this.skipBlankTab(line).toLowerCase();
+        MetricType metricType = MetricType.getType(type);
+        if (metricType == null) {
+            throw new ParseException("pare type error");
+        }
+        metricFamily.setMetricType(metricType);
+    }
+
+    private void parseMetric(Map<String, MetricFamily> metricMap, String line) {
+        Pair<String, String> pair = this.readTokenAsMetricName(line);
+        String metricName = pair.getLeft();
+        String subLine = pair.getRight();
+        MetricFamily metricFamily = metricMap.get(metricName);
+        if (metricFamily == null) {
+            log.error("line {} parse error, no such HELP and TYPE", line);
+            return;
+        }
+        List<MetricFamily.Metric> metricList = metricFamily.getMetricList();
+        MetricFamily.Metric metric = new MetricFamily.Metric();
+        this.readLabels(metricFamily, metric, subLine);
+        if (metricList == null) {
+            metricList = new ArrayList<>();
+            metricFamily.setMetricList(metricList);
+        }
+        metricList.add(metric);
+    }
+
+    private void readLabels(MetricFamily metricFamily, MetricFamily.Metric metric, String line) {
+        if (metricFamily.getMetricType().equals(MetricType.SUMMARY) || metricFamily.getMetricType().equals(MetricType.HISTOGRAM)) {
+            // need handle
+        }
+        metric.setLabelPair(new ArrayList<>());
+        if (line.charAt(0) == '{') {
+            this.startReadLabelName(metricFamily, metric, line.substring(1));
+        } else {
+            this.readLabelValue(metricFamily, metric, new MetricFamily.Label(), line);
+        }
+    }
+
+    private void startReadLabelName(MetricFamily metricFamily, MetricFamily.Metric metric, String line) {
+        String subLine = this.skipBlankTab(line);
+        if (line == null) return;
+        if (line.charAt(0) == '}') {
+            subLine = this.skipBlankTab(line.substring(1));
+            if (subLine.isEmpty()) return;
+            this.startReadLabelValue(metricFamily, metric, new MetricFamily.Label(), subLine);
+            return;
+        }
+        Pair<String, String> pair = this.readTokenAsLabelName(line);
+        String labelName = pair.getLeft();
+        subLine = pair.getRight();
+        if (labelName == null || labelName.isEmpty() || labelName.equals("__name__")) {
+            throw new ParseException("invalid label name, label name size = 0 or label name equals __name__");
+        }
+        MetricFamily.Label label = new MetricFamily.Label();
+        if (!(metricFamily.getMetricType().equals(MetricType.SUMMARY) && labelName.equals(QUANTILE_LABEL))
+                && !(metricFamily.getMetricType().equals(MetricType.HISTOGRAM) && labelName.equals(BUCKET_LABEL))) {
+            label.setName(labelName);
+        }
+        if (subLine.charAt(0) != '=') {
+            throw new ParseException("parse error, not match the format of labelName=labelValue");
+        }
+        this.startReadLabelValue(metricFamily, metric, label, subLine.substring(1));
+    }
+
+    private void startReadLabelValue(MetricFamily metricFamily, MetricFamily.Metric metric, MetricFamily.Label label, String line) {
+        String subLine = this.skipBlankTab(line);
+        if (subLine == null) return;
+        if (subLine.charAt(0) != '"') {
+            throw new ParseException("expected '\"' at start of label value");
+        }
+        Pair<String, String> pair = this.readTokenAsLabelValue(line.substring(1));
+        subLine = this.skipBlankTab(pair.getRight());
+        label.setValue(pair.getLeft());
+        metric.getLabelPair().add(label);
+        // todo add method: judge label value is valid
+        if (!subLine.isEmpty()) {
+            switch (subLine.charAt(0)) {
+                case ',':
+                    this.startReadLabelName(metricFamily, metric, subLine);
+                    break;
+                case '}':
+                    return;
+                default:
+                    throw new ParseException("expected '}' or ',' at end of label value");
+            }
+        }
+    }
+
+    private void readLabelValue(MetricFamily metricFamily, MetricFamily.Metric metric, MetricFamily.Label label, String line) {
+        label.setValue(line);
+        metric.getLabelPair().add(label);
+        // todo handle by metric type
+    }
+
+    /**
+     * 读取第一个空格符前的token
+     * @return Pair<Left: token, right: sub line>
+     */
+    private Pair<String, String> readTokenUnitWhitespace(String s) {
+        int whitespaceIndex = s.indexOf(" ");
+        if (whitespaceIndex < 0 || whitespaceIndex > s.length()) {
+            return Pair.of(s, null);
+        }
+        return Pair.of(s.substring(0, whitespaceIndex).trim(), s.substring(whitespaceIndex).trim());
+    }
+
+    /**
+     * 获取指标的名称
+     * @return Pair<left: metricName, right: sub line>
+     */
+    private Pair<String,String> readTokenAsMetricName(String s) {
+        if (this.isValidMetricNameStart(s.charAt(0))) {
+            int i;
+            for (i = 1; i < s.length(); i++) {
+                if (!this.isValidMetricNameContinuation(s.charAt(i))) {
+                    break;
+                }
+            }
+            return Pair.of(s.substring(0, i), s.substring(i));
+        }
+        throw new ParseException("parse metric name error");
+    }
+
+    /**
+     * 获取Label的名称
+     * @return Pair<left: LabelName, right: sub line>
+     */
+    private Pair<String, String> readTokenAsLabelName(String s) {
+        if (this.isValidLabelNameStart(s.charAt(0))) {
+            int i;
+            for(i = 1; i < s.length(); i++) {
+                if (!this.isValidLabelNameContinuation(s.charAt(i))) {
+                    break;
+                }
+            }
+            return Pair.of(s.substring(0, i), s.substring(i));
+        }
+        throw new ParseException("parse label name error");
+    }
+
+    /**
+     * 获取Label的值
+     * @return Pair<left: LabelValue, right: sub line>
+     */
+    private Pair<String, String> readTokenAsLabelValue(String s) {
+        StringBuilder builder = new StringBuilder();
+        boolean escaped = false;
+        for (int i = 0; i < s.length(); i++) {
+            char c = s.charAt(i);
+            // 处理 '\\' 转义
+            if (escaped) {
+                switch (c) {
+                    case '"':
+                    case '\\':
+                        builder.append(c);
+                        break;
+                    case 'n':
+                        builder.append('\n');
+                        break;
+                    default:
+                        throw new ParseException("parse label value error");
+                }
+            } else {
+                switch (c) {
+                    case '"':
+                        return Pair.of(builder.toString(), s.substring(i + 1));
+                    case '\n':
+                        throw new ParseException("parse label value error, next line");
+                    case '\\':
+                        escaped = true;
+                        break;
+                    default:
+                        builder.append(c);
+                }
+            }
+        }
+        return Pair.of(builder.toString(), "");
+    }
+
+    // 清除字符两边空格
+    private String skipBlankTab(String s) {
+        if (s == null) {
+            return null;
+        }
+        s = s.trim();
+        return s.isEmpty() ? null : s;
+    }
+
+    // 是否符合metric name首字符规则
+    private boolean isValidMetricNameStart(char c) {
+        return isValidLabelNameStart(c) || c == ':';
+    }
+
+    // 是否符合metric name除首字符其他字符规则
+    private boolean isValidMetricNameContinuation(char c) {
+        return isValidLabelNameContinuation(c) || c == ':';
+    }
+
+    // 是否符合label name首字符规则
+    private boolean isValidLabelNameStart(char c) {
+        return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || c == '_';
+    }
+
+    // 是否符合label name除首字符其他字符规则
+    private boolean isValidLabelNameContinuation(char c) {
+        return isValidLabelNameStart(c) || (c >= '0' && c <= '9');
+    }
+
+    public static void main(String[] args) {
+        String resp = "# HELP go_gc_cycles_automatic_gc_cycles_total Count of completed GC cycles generated by the Go runtime.\n" +
+                "# TYPE go_gc_cycles_automatic_gc_cycles_total counter\n" +
+                "go_gc_cycles_automatic_gc_cycles_total 0\n" +
+                "# HELP go_gc_cycles_forced_gc_cycles_total Count of completed GC cycles forced by the application.\n" +
+                "# TYPE go_gc_cycles_forced_gc_cycles_total counter\n" +
+                "go_gc_cycles_forced_gc_cycles_total 0\n" +
+                "# HELP go_gc_cycles_total_gc_cycles_total Count of all completed GC cycles.\n" +
+                "# TYPE go_gc_cycles_total_gc_cycles_total counter\n" +
+                "go_gc_cycles_total_gc_cycles_total 0\n" +
+                "# HELP go_gc_duration_seconds A summary of the pause duration of garbage collection cycles.\n" +
+                "# TYPE go_gc_duration_seconds summary\n" +
+                "go_gc_duration_seconds{quantile=\"0\"} 0\n" +
+                "go_gc_duration_seconds{quantile=\"0.25\"} 0\n" +
+                "go_gc_duration_seconds{quantile=\"0.5\"} 0\n" +
+                "go_gc_duration_seconds{quantile=\"0.75\"} 0\n" +
+                "go_gc_duration_seconds{quantile=\"1\"} 0\n";
+        ExporterParser parser = new ExporterParser();
+        Map<String, MetricFamily> metricFamilyMap = parser.textToMetric(resp);
+        for (MetricFamily metricFamily : metricFamilyMap.values()) {
+            System.out.println(metricFamily);
+        }
+    }
+}
diff --git a/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/MetricFamily.java b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/MetricFamily.java
new file mode 100644
index 00000000000..ecb110741b5
--- /dev/null
+++ b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/MetricFamily.java
@@ -0,0 +1,49 @@
+package com.usthe.collector.collect.http.promethus.exporter;
+
+import lombok.Data;
+import lombok.ToString;
+
+import java.util.List;
+
+/**
+ * @author ceilzcx
+ * @since 7/11/2022
+ */
+@Data
+@ToString
+public class MetricFamily {
+
+    private String name;
+
+    private String help;
+
+    private MetricType metricType;
+
+    private List<Metric> metricList;
+
+    @Data
+    static class Metric {
+
+        private List<Label> labelPair;
+
+        private Object gauge;
+
+        private Object counter;
+
+        private Object summary;
+
+        private Object untyped;
+
+        private Object histogram;
+
+        private Long timestampMs;
+    }
+
+    @Data
+    static class Label {
+
+        private String name;
+
+        private String value;
+    }
+}
diff --git a/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/MetricType.java b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/MetricType.java
new file mode 100644
index 00000000000..ee35352d91c
--- /dev/null
+++ b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/MetricType.java
@@ -0,0 +1,32 @@
+package com.usthe.collector.collect.http.promethus.exporter;
+
+/**
+ * @author ceilzcx
+ * @since 7/11/2022
+ */
+public enum MetricType {
+    COUNTER("counter"),
+    GAUGE("gauge"),
+    SUMMARY("summary"),
+    UNTYPED("untyped"),
+    HISTOGRAM("histogram");
+
+    private final String value;
+
+    MetricType(String value) {
+        this.value = value;
+    }
+
+    public String getValue() {
+        return value;
+    }
+
+    public static MetricType getType(String value) {
+        for (MetricType metricType : values()) {
+            if (metricType.getValue().equals(value)) {
+                return metricType;
+            }
+        }
+        return null;
+    }
+}

From c60f164089d5ed34c36454ccc5280ca94b87ef4f Mon Sep 17 00:00:00 2001
From: Ceilzcx <1758619238@qq.com>
Date: Wed, 9 Nov 2022 16:24:53 +0800
Subject: [PATCH 02/22] prometheus exporter metrics parser

---
 .../promethus/exporter/ExporterParser.java    | 180 +++++++++++++++---
 .../http/promethus/exporter/MetricFamily.java |  66 ++++++-
 .../http/promethus/exporter/MetricType.java   |   2 +
 3 files changed, 220 insertions(+), 28 deletions(-)

diff --git a/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java
index dc554d9c546..c8175ff4868 100644
--- a/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java
+++ b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java
@@ -22,6 +22,9 @@ public class ExporterParser {
 
     private static final String QUANTILE_LABEL = "quantile";
     private static final String BUCKET_LABEL = "le";
+    private static final String SUM_SUFFIX = "_sum";
+    private static final String COUNT_SUFFIX = "_count";
+    private static final String BUCKET_SUFFIX = "_bucket";
 
     public Map<String, MetricFamily> textToMetric(String resp) {
         // key: metric name, value: metric family
@@ -92,35 +95,51 @@ private void parseMetric(Map<String, MetricFamily> metricMap, String line) {
         String subLine = pair.getRight();
         MetricFamily metricFamily = metricMap.get(metricName);
         if (metricFamily == null) {
-            log.error("line {} parse error, no such HELP and TYPE", line);
-            return;
+            if (this.isCount(metricName)) {
+                metricFamily = metricMap.get(metricName.substring(0, metricName.length() - COUNT_SUFFIX.length()));
+            } else if (this.isSum(metricName)) {
+                metricFamily = metricMap.get(metricName.substring(0, metricName.length() - SUM_SUFFIX.length()));
+            } else if (this.isBucket(metricName)) {
+                metricFamily = metricMap.get(metricName.substring(0, metricName.length() - BUCKET_SUFFIX.length()));
+            }
+            if (metricFamily == null) {
+                log.error("line {} parse error, no such HELP and TYPE", line);
+                return;
+            } else if (this.isCount(metricName) || this.isSum(metricName)) {
+                MetricFamily.Label label = new MetricFamily.Label();
+                label.setName(metricName);
+                this.readLabelValue(metricFamily, metricFamily.getMetricList().get(0), label, subLine);
+            }
         }
         List<MetricFamily.Metric> metricList = metricFamily.getMetricList();
-        MetricFamily.Metric metric = new MetricFamily.Metric();
-        this.readLabels(metricFamily, metric, subLine);
         if (metricList == null) {
             metricList = new ArrayList<>();
             metricFamily.setMetricList(metricList);
         }
-        metricList.add(metric);
+        // todo 写死只创建一个metric, 为什么prometheus需要使用List?
+        MetricFamily.Metric metric;
+        if (metricList.isEmpty()) {
+            metric = new MetricFamily.Metric();
+            metricList.add(metric);
+        } else {
+            metric = metricList.get(0);
+        }
+        this.readLabels(metricFamily, metric, subLine);
     }
 
     private void readLabels(MetricFamily metricFamily, MetricFamily.Metric metric, String line) {
-        if (metricFamily.getMetricType().equals(MetricType.SUMMARY) || metricFamily.getMetricType().equals(MetricType.HISTOGRAM)) {
-            // need handle
-        }
         metric.setLabelPair(new ArrayList<>());
         if (line.charAt(0) == '{') {
             this.startReadLabelName(metricFamily, metric, line.substring(1));
         } else {
-            this.readLabelValue(metricFamily, metric, new MetricFamily.Label(), line);
+            this.readLabelValue(metricFamily, metric, null, line);
         }
     }
 
     private void startReadLabelName(MetricFamily metricFamily, MetricFamily.Metric metric, String line) {
         String subLine = this.skipBlankTab(line);
-        if (line == null) return;
-        if (line.charAt(0) == '}') {
+        if (subLine == null) return;
+        if (subLine.charAt(0) == '}') {
             subLine = this.skipBlankTab(line.substring(1));
             if (subLine.isEmpty()) return;
             this.startReadLabelValue(metricFamily, metric, new MetricFamily.Label(), subLine);
@@ -133,10 +152,7 @@ private void startReadLabelName(MetricFamily metricFamily, MetricFamily.Metric m
             throw new ParseException("invalid label name, label name size = 0 or label name equals __name__");
         }
         MetricFamily.Label label = new MetricFamily.Label();
-        if (!(metricFamily.getMetricType().equals(MetricType.SUMMARY) && labelName.equals(QUANTILE_LABEL))
-                && !(metricFamily.getMetricType().equals(MetricType.HISTOGRAM) && labelName.equals(BUCKET_LABEL))) {
-            label.setName(labelName);
-        }
+        label.setName(labelName);
         if (subLine.charAt(0) != '=') {
             throw new ParseException("parse error, not match the format of labelName=labelValue");
         }
@@ -152,7 +168,10 @@ private void startReadLabelValue(MetricFamily metricFamily, MetricFamily.Metric
         Pair<String, String> pair = this.readTokenAsLabelValue(line.substring(1));
         subLine = this.skipBlankTab(pair.getRight());
         label.setValue(pair.getLeft());
-        metric.getLabelPair().add(label);
+        if (!(metricFamily.getMetricType().equals(MetricType.SUMMARY) && label.getName().equals(QUANTILE_LABEL))
+                && !(metricFamily.getMetricType().equals(MetricType.HISTOGRAM) && label.getName().equals(BUCKET_LABEL))) {
+            metric.getLabelPair().add(label);
+        }
         // todo add method: judge label value is valid
         if (!subLine.isEmpty()) {
             switch (subLine.charAt(0)) {
@@ -160,21 +179,97 @@ private void startReadLabelValue(MetricFamily metricFamily, MetricFamily.Metric
                     this.startReadLabelName(metricFamily, metric, subLine);
                     break;
                 case '}':
-                    return;
+                    subLine = this.skipBlankTab(subLine.substring(1));
+                    if (subLine.isEmpty()) {
+                        return;
+                    }
+                    this.readLabelValue(metricFamily, metric, label, subLine);
+                    break;
                 default:
                     throw new ParseException("expected '}' or ',' at end of label value");
             }
         }
     }
 
+    // todo golang对于无限大的字符为 +INF/-INF, 需要单独处理
     private void readLabelValue(MetricFamily metricFamily, MetricFamily.Metric metric, MetricFamily.Label label, String line) {
-        label.setValue(line);
-        metric.getLabelPair().add(label);
-        // todo handle by metric type
+        String subLine = this.skipBlankTab(line);
+        switch (metricFamily.getMetricType()) {
+            case COUNTER:
+                MetricFamily.Counter counter = new MetricFamily.Counter();
+                counter.setValue(Double.parseDouble(subLine));
+                metric.setCounter(counter);
+                break;
+            case GAUGE:
+                MetricFamily.Gauge gauge = new MetricFamily.Gauge();
+                gauge.setValue(Double.parseDouble(subLine));
+                metric.setGauge(gauge);
+                break;
+            case UNTYPED:
+                MetricFamily.Untyped untyped = new MetricFamily.Untyped();
+                untyped.setValue(Double.parseDouble(subLine));
+                metric.setUntyped(untyped);
+                break;
+            case SUMMARY:
+                MetricFamily.Summary summary = metric.getSummary();
+                if (summary == null) {
+                    summary = new MetricFamily.Summary();
+                    metric.setSummary(summary);
+                }
+                // 处理 "xxx{quantile=\"0\"} 0" 的格式
+                if (label != null && label.getName().equals(QUANTILE_LABEL)) {
+                    List<MetricFamily.Quantile> quantileList = summary.getQuantileList();
+                    if (quantileList == null) {
+                        quantileList = new ArrayList<>();
+                        summary.setQuantileList(quantileList);
+                    }
+                    MetricFamily.Quantile quantile = new MetricFamily.Quantile();
+                    quantile.setXLabel(Double.parseDouble(label.getValue()));
+                    quantile.setValue(Double.parseDouble(subLine));
+                    quantileList.add(quantile);
+                }
+                // 处理 xxx_sum 的数据
+                if (label != null && this.isSum(label.getName())) {
+                    summary.setSum(Double.parseDouble(subLine));
+                }
+                // 处理 xxx_count 的数据
+                if (label != null && this.isCount(label.getName())) {
+                    summary.setCount(Long.parseLong(subLine));
+                }
+                break;
+            case HISTOGRAM:
+                MetricFamily.Histogram histogram = metric.getHistogram();
+                if (histogram == null) {
+                    histogram = new MetricFamily.Histogram();
+                    metric.setHistogram(histogram);
+                }
+                // 处理 "xxx{quantile=\"0\"} 0" 的格式
+                if (label != null && label.getName().equals(BUCKET_LABEL)) {
+                    List<MetricFamily.Bucket> bucketList = histogram.getBucketList();
+                    if (bucketList == null) {
+                        bucketList = new ArrayList<>();
+                        histogram.setBucketList(bucketList);
+                    }
+                    MetricFamily.Bucket bucket = new MetricFamily.Bucket();
+                    bucket.setUpperBound(Double.parseDouble(label.getValue()));
+                    bucket.setCumulativeCount(Long.parseLong(subLine));
+                    bucketList.add(bucket);
+                }
+                if (label != null && this.isSum(label.getName())) {
+                    histogram.setSum(Double.parseDouble(subLine));
+                }
+                if (label != null && this.isCount(label.getName())) {
+                    histogram.setCount(Long.parseLong(subLine));
+                }
+                break;
+            default:
+                throw new ParseException("no such type in metricFamily");
+        }
     }
 
     /**
      * 读取第一个空格符前的token
+     *
      * @return Pair<Left: token, right: sub line>
      */
     private Pair<String, String> readTokenUnitWhitespace(String s) {
@@ -187,9 +282,10 @@ private Pair<String, String> readTokenUnitWhitespace(String s) {
 
     /**
      * 获取指标的名称
+     *
      * @return Pair<left: metricName, right: sub line>
      */
-    private Pair<String,String> readTokenAsMetricName(String s) {
+    private Pair<String, String> readTokenAsMetricName(String s) {
         if (this.isValidMetricNameStart(s.charAt(0))) {
             int i;
             for (i = 1; i < s.length(); i++) {
@@ -204,12 +300,13 @@ private Pair<String,String> readTokenAsMetricName(String s) {
 
     /**
      * 获取Label的名称
+     *
      * @return Pair<left: LabelName, right: sub line>
      */
     private Pair<String, String> readTokenAsLabelName(String s) {
         if (this.isValidLabelNameStart(s.charAt(0))) {
             int i;
-            for(i = 1; i < s.length(); i++) {
+            for (i = 1; i < s.length(); i++) {
                 if (!this.isValidLabelNameContinuation(s.charAt(i))) {
                     break;
                 }
@@ -221,6 +318,7 @@ private Pair<String, String> readTokenAsLabelName(String s) {
 
     /**
      * 获取Label的值
+     *
      * @return Pair<left: LabelValue, right: sub line>
      */
     private Pair<String, String> readTokenAsLabelValue(String s) {
@@ -287,6 +385,18 @@ private boolean isValidLabelNameContinuation(char c) {
         return isValidLabelNameStart(c) || (c >= '0' && c <= '9');
     }
 
+    private boolean isSum(String s) {
+        return s != null && s.endsWith(SUM_SUFFIX);
+    }
+
+    private boolean isCount(String s) {
+        return s != null && s.endsWith(COUNT_SUFFIX);
+    }
+
+    private boolean isBucket(String s) {
+        return s != null && s.endsWith(BUCKET_SUFFIX);
+    }
+
     public static void main(String[] args) {
         String resp = "# HELP go_gc_cycles_automatic_gc_cycles_total Count of completed GC cycles generated by the Go runtime.\n" +
                 "# TYPE go_gc_cycles_automatic_gc_cycles_total counter\n" +
@@ -303,7 +413,31 @@ public static void main(String[] args) {
                 "go_gc_duration_seconds{quantile=\"0.25\"} 0\n" +
                 "go_gc_duration_seconds{quantile=\"0.5\"} 0\n" +
                 "go_gc_duration_seconds{quantile=\"0.75\"} 0\n" +
-                "go_gc_duration_seconds{quantile=\"1\"} 0\n";
+                "go_gc_duration_seconds{quantile=\"1\"} 0\n" +
+                "go_gc_duration_seconds_sum 0\n" +
+                "go_gc_duration_seconds_count 0\n" +
+                "# HELP go_gc_heap_allocs_by_size_bytes_total Distribution of heap allocations by approximate size. Note that this does not include tiny objects as defined by /gc/heap/tiny/allocs:objects, only tiny blocks.\n" +
+                "# TYPE go_gc_heap_allocs_by_size_bytes_total histogram\n" +
+                "go_gc_heap_allocs_by_size_bytes_total_bucket{le=\"8.999999999999998\"} 4096\n" +
+                "go_gc_heap_allocs_by_size_bytes_total_bucket{le=\"24.999999999999996\"} 12285\n" +
+                "go_gc_heap_allocs_by_size_bytes_total_bucket{le=\"64.99999999999999\"} 17695\n" +
+                "go_gc_heap_allocs_by_size_bytes_total_bucket{le=\"144.99999999999997\"} 20775\n" +
+                "go_gc_heap_allocs_by_size_bytes_total_bucket{le=\"320.99999999999994\"} 22503\n" +
+                "go_gc_heap_allocs_by_size_bytes_total_bucket{le=\"704.9999999999999\"} 23097\n" +
+                "go_gc_heap_allocs_by_size_bytes_total_bucket{le=\"1536.9999999999998\"} 23285\n" +
+                "go_gc_heap_allocs_by_size_bytes_total_bucket{le=\"3200.9999999999995\"} 23386\n" +
+                "go_gc_heap_allocs_by_size_bytes_total_bucket{le=\"6528.999999999999\"} 23436\n" +
+                "go_gc_heap_allocs_by_size_bytes_total_bucket{le=\"13568.999999999998\"} 23466\n" +
+                "go_gc_heap_allocs_by_size_bytes_total_bucket{le=\"27264.999999999996\"} 23472\n" +
+//                "go_gc_heap_allocs_by_size_bytes_total_bucket{le=\"+Inf\"} 23474\n" +
+                "go_gc_heap_allocs_by_size_bytes_total_sum 2.5694e+06\n" +
+                "go_gc_heap_allocs_by_size_bytes_total_count 23474\n" +
+                "# HELP go_memstats_mspan_inuse_bytes Number of bytes in use by mspan structures.\n" +
+                "# TYPE go_memstats_mspan_inuse_bytes gauge\n" +
+                "go_memstats_mspan_inuse_bytes 46512\n" +
+                "# HELP mysql_global_status_aborted_connects Generic metric from SHOW GLOBAL STATUS.\n" +
+                "# TYPE mysql_global_status_aborted_connects untyped\n" +
+                "mysql_global_status_aborted_connects 0";
         ExporterParser parser = new ExporterParser();
         Map<String, MetricFamily> metricFamilyMap = parser.textToMetric(resp);
         for (MetricFamily metricFamily : metricFamilyMap.values()) {
diff --git a/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/MetricFamily.java b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/MetricFamily.java
index ecb110741b5..d91b5703ab0 100644
--- a/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/MetricFamily.java
+++ b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/MetricFamily.java
@@ -26,15 +26,15 @@ static class Metric {
 
         private List<Label> labelPair;
 
-        private Object gauge;
+        private Gauge gauge;
 
-        private Object counter;
+        private Counter counter;
 
-        private Object summary;
+        private Summary summary;
 
-        private Object untyped;
+        private Untyped untyped;
 
-        private Object histogram;
+        private Histogram histogram;
 
         private Long timestampMs;
     }
@@ -46,4 +46,60 @@ static class Label {
 
         private String value;
     }
+
+    @Data
+    static class Counter {
+
+        private double value;
+
+        // Exemplar
+    }
+
+    @Data
+    static class Gauge {
+
+        private double value;
+    }
+
+    @Data
+    static class Untyped {
+
+        private double value;
+    }
+
+    @Data
+    static class Summary {
+
+        private long count;
+
+        private double sum;
+
+        private List<Quantile> quantileList;
+    }
+
+    @Data
+    static class Quantile {
+
+        private double xLabel;
+
+        private double value;
+    }
+
+    @Data
+    static class Histogram {
+
+        private long count;
+
+        private double sum;
+
+        private List<Bucket> bucketList;
+    }
+
+    @Data
+    static class Bucket {
+
+        private long cumulativeCount;
+
+        private double upperBound;
+    }
 }
diff --git a/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/MetricType.java b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/MetricType.java
index ee35352d91c..c2c548fe37d 100644
--- a/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/MetricType.java
+++ b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/MetricType.java
@@ -5,7 +5,9 @@
  * @since 7/11/2022
  */
 public enum MetricType {
+    // 代表单调递增的计数器, 例: 统计次数
     COUNTER("counter"),
+    // 任意上下波动的指标类型, 例: CPU的使用率
     GAUGE("gauge"),
     SUMMARY("summary"),
     UNTYPED("untyped"),

From 2be453daaab5485600106369633fb004da34b962 Mon Sep 17 00:00:00 2001
From: Ceilzcx <1758619238@qq.com>
Date: Wed, 9 Nov 2022 19:22:16 +0800
Subject: [PATCH 03/22] prometheus exporter metrics parser

---
 .../promethus/exporter/ExporterParser.java    | 599 +++++++++++++-----
 .../java/com/usthe/common/util/StrBuffer.java |  96 +++
 2 files changed, 550 insertions(+), 145 deletions(-)
 create mode 100644 common/src/main/java/com/usthe/common/util/StrBuffer.java

diff --git a/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java
index c8175ff4868..fd00c0cc5fb 100644
--- a/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java
+++ b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java
@@ -1,7 +1,7 @@
 package com.usthe.collector.collect.http.promethus.exporter;
 
 import com.usthe.collector.collect.http.promethus.ParseException;
-import com.usthe.common.util.Pair;
+import com.usthe.common.util.StrBuffer;
 import lombok.extern.slf4j.Slf4j;
 
 import java.util.ArrayList;
@@ -13,7 +13,6 @@
  * @author ceilzcx
  * @since 7/11/2022
  * 参考: prometheus的text_parse.go的代码, 入口: TextToMetricFamilies
- * todo 使用String.subString()的方式会生成很多的对象，后续改为buffer
  */
 @Slf4j
 public class ExporterParser {
@@ -31,57 +30,56 @@ public Map<String, MetricFamily> textToMetric(String resp) {
         Map<String, MetricFamily> metricMap = new ConcurrentHashMap<>();
         String[] lines = resp.split("\n");
         for (String line : lines) {
-            this.parseLine(metricMap, line);
+            this.parseLine(metricMap, new StrBuffer(line));
         }
         return metricMap;
     }
 
-    private void parseLine(Map<String, MetricFamily> metricMap, String line) {
-        line = this.skipBlankTab(line);
-        if (line == null) return;
-        switch (line.charAt(0)) {
+    private void parseLine(Map<String, MetricFamily> metricMap, StrBuffer buffer) {
+        buffer.skipBlankTabs();
+        if (buffer.isEmpty()) return;
+        switch (buffer.charAt(0)) {
             case '#':
-                this.parseComment(metricMap, line.substring(1));
+                buffer.read();
+                this.parseComment(metricMap, buffer);
                 break;
             case '\n':
                 break;
             default:
-                this.parseMetric(metricMap, line);
+                this.parseMetric(metricMap, buffer);
         }
     }
 
-    private void parseComment(Map<String, MetricFamily> metricMap, String line) {
-        line = this.skipBlankTab(line);
-        if (line == null) return;
-        Pair<String, String> pair = this.readTokenUnitWhitespace(line);
-        String token = pair.getLeft();
-        String subLine = pair.getRight();
+    private void parseComment(Map<String, MetricFamily> metricMap, StrBuffer buffer) {
+        buffer.skipBlankTabs();
+        if (buffer.isEmpty()) return;
+        String token = this.readTokenUnitWhitespace(buffer);
         if (!token.equals(HELP) && !token.equals(TYPE)) {
             // handle
             return;
         }
-        pair = this.readTokenAsMetricName(subLine);
-        String metricName = pair.getLeft();
+        String metricName = this.readTokenAsMetricName(buffer);
         MetricFamily metricFamily = metricMap.computeIfAbsent(metricName, key -> new MetricFamily());
         metricFamily.setName(metricName);
-        subLine = pair.getRight();
         switch (token) {
             case HELP:
-                this.parseHelp(metricFamily, subLine);
+                this.parseHelp(metricFamily, buffer);
                 break;
             case TYPE:
-                this.parseType(metricFamily, subLine);
+                this.parseType(metricFamily, buffer);
                 break;
             default:
         }
     }
 
-    private void parseHelp(MetricFamily metricFamily, String line) {
-        metricFamily.setHelp(this.skipBlankTab(line));
+    private void parseHelp(MetricFamily metricFamily, StrBuffer line) {
+        line.skipBlankTabs();
+        metricFamily.setHelp(line.toStr());
     }
 
-    private void parseType(MetricFamily metricFamily, String line) {
-        String type = this.skipBlankTab(line).toLowerCase();
+    private void parseType(MetricFamily metricFamily, StrBuffer line) {
+        line.skipBlankTabs();
+        String type = line.toStr().toLowerCase();
         MetricType metricType = MetricType.getType(type);
         if (metricType == null) {
             throw new ParseException("pare type error");
@@ -89,10 +87,8 @@ private void parseType(MetricFamily metricFamily, String line) {
         metricFamily.setMetricType(metricType);
     }
 
-    private void parseMetric(Map<String, MetricFamily> metricMap, String line) {
-        Pair<String, String> pair = this.readTokenAsMetricName(line);
-        String metricName = pair.getLeft();
-        String subLine = pair.getRight();
+    private void parseMetric(Map<String, MetricFamily> metricMap, StrBuffer buffer) {
+        String metricName = this.readTokenAsMetricName(buffer);
         MetricFamily metricFamily = metricMap.get(metricName);
         if (metricFamily == null) {
             if (this.isCount(metricName)) {
@@ -103,12 +99,12 @@ private void parseMetric(Map<String, MetricFamily> metricMap, String line) {
                 metricFamily = metricMap.get(metricName.substring(0, metricName.length() - BUCKET_SUFFIX.length()));
             }
             if (metricFamily == null) {
-                log.error("line {} parse error, no such HELP and TYPE", line);
+                log.error("line {} parse error, no such HELP and TYPE", buffer.toStr());
                 return;
             } else if (this.isCount(metricName) || this.isSum(metricName)) {
                 MetricFamily.Label label = new MetricFamily.Label();
                 label.setName(metricName);
-                this.readLabelValue(metricFamily, metricFamily.getMetricList().get(0), label, subLine);
+                this.readLabelValue(metricFamily, metricFamily.getMetricList().get(0), label, buffer);
             }
         }
         List<MetricFamily.Metric> metricList = metricFamily.getMetricList();
@@ -116,74 +112,81 @@ private void parseMetric(Map<String, MetricFamily> metricMap, String line) {
             metricList = new ArrayList<>();
             metricFamily.setMetricList(metricList);
         }
-        // todo 写死只创建一个metric, 为什么prometheus需要使用List?
+        // todo 这里可能存在问题, 目前逻辑是HISTOGRAM和SUMMARY只创建一个metric, 不知道是否合理, 还需要参照源码
         MetricFamily.Metric metric;
         if (metricList.isEmpty()) {
             metric = new MetricFamily.Metric();
             metricList.add(metric);
         } else {
-            metric = metricList.get(0);
+            if (metricFamily.getMetricType().equals(MetricType.HISTOGRAM) || metricFamily.getMetricType().equals(MetricType.SUMMARY)) {
+                metric = metricList.get(0);
+            } else {
+                metric = new MetricFamily.Metric();
+                metricList.add(metric);
+            }
         }
-        this.readLabels(metricFamily, metric, subLine);
+        this.readLabels(metricFamily, metric, buffer);
     }
 
-    private void readLabels(MetricFamily metricFamily, MetricFamily.Metric metric, String line) {
+    private void readLabels(MetricFamily metricFamily, MetricFamily.Metric metric, StrBuffer buffer) {
         metric.setLabelPair(new ArrayList<>());
-        if (line.charAt(0) == '{') {
-            this.startReadLabelName(metricFamily, metric, line.substring(1));
+        if (buffer.charAt(0) == '{') {
+            buffer.read();
+            this.startReadLabelName(metricFamily, metric, buffer);
         } else {
-            this.readLabelValue(metricFamily, metric, null, line);
+            this.readLabelValue(metricFamily, metric, null, buffer);
         }
     }
 
-    private void startReadLabelName(MetricFamily metricFamily, MetricFamily.Metric metric, String line) {
-        String subLine = this.skipBlankTab(line);
-        if (subLine == null) return;
-        if (subLine.charAt(0) == '}') {
-            subLine = this.skipBlankTab(line.substring(1));
-            if (subLine.isEmpty()) return;
-            this.startReadLabelValue(metricFamily, metric, new MetricFamily.Label(), subLine);
+    private void startReadLabelName(MetricFamily metricFamily, MetricFamily.Metric metric, StrBuffer buffer) {
+        buffer.skipBlankTabs();
+        if (buffer.isEmpty()) return;
+        if (buffer.charAt(0) == '}') {
+            buffer.read();
+            buffer.skipBlankTabs();
+            if (buffer.isEmpty()) return;
+            this.startReadLabelValue(metricFamily, metric, new MetricFamily.Label(), buffer);
             return;
         }
-        Pair<String, String> pair = this.readTokenAsLabelName(line);
-        String labelName = pair.getLeft();
-        subLine = pair.getRight();
-        if (labelName == null || labelName.isEmpty() || labelName.equals("__name__")) {
+        String labelName = this.readTokenAsLabelName(buffer);
+        if (labelName.isEmpty() || labelName.equals("__name__")) {
             throw new ParseException("invalid label name, label name size = 0 or label name equals __name__");
         }
         MetricFamily.Label label = new MetricFamily.Label();
         label.setName(labelName);
-        if (subLine.charAt(0) != '=') {
+        if (buffer.read() != '=') {
             throw new ParseException("parse error, not match the format of labelName=labelValue");
         }
-        this.startReadLabelValue(metricFamily, metric, label, subLine.substring(1));
+        this.startReadLabelValue(metricFamily, metric, label, buffer);
     }
 
-    private void startReadLabelValue(MetricFamily metricFamily, MetricFamily.Metric metric, MetricFamily.Label label, String line) {
-        String subLine = this.skipBlankTab(line);
-        if (subLine == null) return;
-        if (subLine.charAt(0) != '"') {
+    private void startReadLabelValue(MetricFamily metricFamily, MetricFamily.Metric metric, MetricFamily.Label label, StrBuffer buffer) {
+        buffer.skipBlankTabs();
+        if (buffer.isEmpty()) return;
+        char c = buffer.read();
+        if (c != '"') {
             throw new ParseException("expected '\"' at start of label value");
         }
-        Pair<String, String> pair = this.readTokenAsLabelValue(line.substring(1));
-        subLine = this.skipBlankTab(pair.getRight());
-        label.setValue(pair.getLeft());
+        String labelValue = this.readTokenAsLabelValue(buffer);
+        label.setValue(labelValue);
         if (!(metricFamily.getMetricType().equals(MetricType.SUMMARY) && label.getName().equals(QUANTILE_LABEL))
                 && !(metricFamily.getMetricType().equals(MetricType.HISTOGRAM) && label.getName().equals(BUCKET_LABEL))) {
             metric.getLabelPair().add(label);
         }
         // todo add method: judge label value is valid
-        if (!subLine.isEmpty()) {
-            switch (subLine.charAt(0)) {
+        if (!buffer.isEmpty()) {
+            switch (buffer.charAt(0)) {
                 case ',':
-                    this.startReadLabelName(metricFamily, metric, subLine);
+                    buffer.read();
+                    this.startReadLabelName(metricFamily, metric, buffer);
                     break;
                 case '}':
-                    subLine = this.skipBlankTab(subLine.substring(1));
-                    if (subLine.isEmpty()) {
+                    buffer.read();
+                    buffer.skipBlankTabs();
+                    if (buffer.isEmpty()) {
                         return;
                     }
-                    this.readLabelValue(metricFamily, metric, label, subLine);
+                    this.readLabelValue(metricFamily, metric, label, buffer);
                     break;
                 default:
                     throw new ParseException("expected '}' or ',' at end of label value");
@@ -191,23 +194,22 @@ private void startReadLabelValue(MetricFamily metricFamily, MetricFamily.Metric
         }
     }
 
-    // todo golang对于无限大的字符为 +INF/-INF, 需要单独处理
-    private void readLabelValue(MetricFamily metricFamily, MetricFamily.Metric metric, MetricFamily.Label label, String line) {
-        String subLine = this.skipBlankTab(line);
+    private void readLabelValue(MetricFamily metricFamily, MetricFamily.Metric metric, MetricFamily.Label label, StrBuffer buffer) {
+        buffer.skipBlankTabs();
         switch (metricFamily.getMetricType()) {
             case COUNTER:
                 MetricFamily.Counter counter = new MetricFamily.Counter();
-                counter.setValue(Double.parseDouble(subLine));
+                counter.setValue(buffer.toDouble());
                 metric.setCounter(counter);
                 break;
             case GAUGE:
                 MetricFamily.Gauge gauge = new MetricFamily.Gauge();
-                gauge.setValue(Double.parseDouble(subLine));
+                gauge.setValue(buffer.toDouble());
                 metric.setGauge(gauge);
                 break;
             case UNTYPED:
                 MetricFamily.Untyped untyped = new MetricFamily.Untyped();
-                untyped.setValue(Double.parseDouble(subLine));
+                untyped.setValue(buffer.toDouble());
                 metric.setUntyped(untyped);
                 break;
             case SUMMARY:
@@ -224,17 +226,19 @@ private void readLabelValue(MetricFamily metricFamily, MetricFamily.Metric metri
                         summary.setQuantileList(quantileList);
                     }
                     MetricFamily.Quantile quantile = new MetricFamily.Quantile();
-                    quantile.setXLabel(Double.parseDouble(label.getValue()));
-                    quantile.setValue(Double.parseDouble(subLine));
+                    if (!label.getValue().equals("+Inf")) {
+                        quantile.setXLabel(Double.parseDouble(label.getValue()));
+                    }
+                    quantile.setValue(buffer.toDouble());
                     quantileList.add(quantile);
                 }
                 // 处理 xxx_sum 的数据
                 if (label != null && this.isSum(label.getName())) {
-                    summary.setSum(Double.parseDouble(subLine));
+                    summary.setSum(buffer.toDouble());
                 }
                 // 处理 xxx_count 的数据
                 if (label != null && this.isCount(label.getName())) {
-                    summary.setCount(Long.parseLong(subLine));
+                    summary.setCount(buffer.toLong());
                 }
                 break;
             case HISTOGRAM:
@@ -251,15 +255,17 @@ private void readLabelValue(MetricFamily metricFamily, MetricFamily.Metric metri
                         histogram.setBucketList(bucketList);
                     }
                     MetricFamily.Bucket bucket = new MetricFamily.Bucket();
-                    bucket.setUpperBound(Double.parseDouble(label.getValue()));
-                    bucket.setCumulativeCount(Long.parseLong(subLine));
+                    if (!label.getValue().equals("+Inf")) {
+                        bucket.setUpperBound(Double.parseDouble(label.getValue()));
+                    }
+                    bucket.setCumulativeCount(buffer.toLong());
                     bucketList.add(bucket);
                 }
                 if (label != null && this.isSum(label.getName())) {
-                    histogram.setSum(Double.parseDouble(subLine));
+                    histogram.setSum(buffer.toDouble());
                 }
                 if (label != null && this.isCount(label.getName())) {
-                    histogram.setCount(Long.parseLong(subLine));
+                    histogram.setCount(buffer.toLong());
                 }
                 break;
             default:
@@ -267,65 +273,61 @@ private void readLabelValue(MetricFamily metricFamily, MetricFamily.Metric metri
         }
     }
 
-    /**
-     * 读取第一个空格符前的token
-     *
-     * @return Pair<Left: token, right: sub line>
-     */
-    private Pair<String, String> readTokenUnitWhitespace(String s) {
-        int whitespaceIndex = s.indexOf(" ");
-        if (whitespaceIndex < 0 || whitespaceIndex > s.length()) {
-            return Pair.of(s, null);
+    // 读取第一个空格符前的token
+    private String readTokenUnitWhitespace(StrBuffer buffer) {
+        StringBuilder builder = new StringBuilder();
+        while (!buffer.isEmpty()) {
+            char c = buffer.read();
+            if (c == ' ') {
+                break;
+            }
+            builder.append(c);
         }
-        return Pair.of(s.substring(0, whitespaceIndex).trim(), s.substring(whitespaceIndex).trim());
+        return builder.toString();
     }
 
-    /**
-     * 获取指标的名称
-     *
-     * @return Pair<left: metricName, right: sub line>
-     */
-    private Pair<String, String> readTokenAsMetricName(String s) {
-        if (this.isValidMetricNameStart(s.charAt(0))) {
-            int i;
-            for (i = 1; i < s.length(); i++) {
-                if (!this.isValidMetricNameContinuation(s.charAt(i))) {
+    // 获取指标的名称
+    private String readTokenAsMetricName(StrBuffer buffer) {
+        StringBuilder builder = new StringBuilder();
+        if (this.isValidMetricNameStart(buffer.charAt(0))) {
+            while (!buffer.isEmpty()) {
+                char c = buffer.read();
+                if (!this.isValidMetricNameContinuation(c)) {
+                    buffer.rollback();
                     break;
                 }
+                builder.append(c);
             }
-            return Pair.of(s.substring(0, i), s.substring(i));
+            return builder.toString();
         }
         throw new ParseException("parse metric name error");
     }
 
-    /**
-     * 获取Label的名称
-     *
-     * @return Pair<left: LabelName, right: sub line>
-     */
-    private Pair<String, String> readTokenAsLabelName(String s) {
-        if (this.isValidLabelNameStart(s.charAt(0))) {
-            int i;
-            for (i = 1; i < s.length(); i++) {
-                if (!this.isValidLabelNameContinuation(s.charAt(i))) {
+    // 获取Label的名称
+    private String readTokenAsLabelName(StrBuffer buffer) {
+        StringBuilder builder = new StringBuilder();
+        char c = buffer.read();
+        if (this.isValidLabelNameStart(c)) {
+            builder.append(c);
+            while (!buffer.isEmpty()) {
+                c = buffer.read();
+                if (!this.isValidLabelNameContinuation(c)) {
+                    buffer.rollback();
                     break;
                 }
+                builder.append(c);
             }
-            return Pair.of(s.substring(0, i), s.substring(i));
+            return builder.toString();
         }
         throw new ParseException("parse label name error");
     }
 
-    /**
-     * 获取Label的值
-     *
-     * @return Pair<left: LabelValue, right: sub line>
-     */
-    private Pair<String, String> readTokenAsLabelValue(String s) {
+    // 获取Label的值
+    private String readTokenAsLabelValue(StrBuffer buffer) {
         StringBuilder builder = new StringBuilder();
         boolean escaped = false;
-        for (int i = 0; i < s.length(); i++) {
-            char c = s.charAt(i);
+        while (!buffer.isEmpty()) {
+            char c = buffer.read();
             // 处理 '\\' 转义
             if (escaped) {
                 switch (c) {
@@ -342,7 +344,7 @@ private Pair<String, String> readTokenAsLabelValue(String s) {
             } else {
                 switch (c) {
                     case '"':
-                        return Pair.of(builder.toString(), s.substring(i + 1));
+                        return builder.toString();
                     case '\n':
                         throw new ParseException("parse label value error, next line");
                     case '\\':
@@ -353,16 +355,7 @@ private Pair<String, String> readTokenAsLabelValue(String s) {
                 }
             }
         }
-        return Pair.of(builder.toString(), "");
-    }
-
-    // 清除字符两边空格
-    private String skipBlankTab(String s) {
-        if (s == null) {
-            return null;
-        }
-        s = s.trim();
-        return s.isEmpty() ? null : s;
+        return builder.toString();
     }
 
     // 是否符合metric name首字符规则
@@ -401,21 +394,6 @@ public static void main(String[] args) {
         String resp = "# HELP go_gc_cycles_automatic_gc_cycles_total Count of completed GC cycles generated by the Go runtime.\n" +
                 "# TYPE go_gc_cycles_automatic_gc_cycles_total counter\n" +
                 "go_gc_cycles_automatic_gc_cycles_total 0\n" +
-                "# HELP go_gc_cycles_forced_gc_cycles_total Count of completed GC cycles forced by the application.\n" +
-                "# TYPE go_gc_cycles_forced_gc_cycles_total counter\n" +
-                "go_gc_cycles_forced_gc_cycles_total 0\n" +
-                "# HELP go_gc_cycles_total_gc_cycles_total Count of all completed GC cycles.\n" +
-                "# TYPE go_gc_cycles_total_gc_cycles_total counter\n" +
-                "go_gc_cycles_total_gc_cycles_total 0\n" +
-                "# HELP go_gc_duration_seconds A summary of the pause duration of garbage collection cycles.\n" +
-                "# TYPE go_gc_duration_seconds summary\n" +
-                "go_gc_duration_seconds{quantile=\"0\"} 0\n" +
-                "go_gc_duration_seconds{quantile=\"0.25\"} 0\n" +
-                "go_gc_duration_seconds{quantile=\"0.5\"} 0\n" +
-                "go_gc_duration_seconds{quantile=\"0.75\"} 0\n" +
-                "go_gc_duration_seconds{quantile=\"1\"} 0\n" +
-                "go_gc_duration_seconds_sum 0\n" +
-                "go_gc_duration_seconds_count 0\n" +
                 "# HELP go_gc_heap_allocs_by_size_bytes_total Distribution of heap allocations by approximate size. Note that this does not include tiny objects as defined by /gc/heap/tiny/allocs:objects, only tiny blocks.\n" +
                 "# TYPE go_gc_heap_allocs_by_size_bytes_total histogram\n" +
                 "go_gc_heap_allocs_by_size_bytes_total_bucket{le=\"8.999999999999998\"} 4096\n" +
@@ -429,15 +407,346 @@ public static void main(String[] args) {
                 "go_gc_heap_allocs_by_size_bytes_total_bucket{le=\"6528.999999999999\"} 23436\n" +
                 "go_gc_heap_allocs_by_size_bytes_total_bucket{le=\"13568.999999999998\"} 23466\n" +
                 "go_gc_heap_allocs_by_size_bytes_total_bucket{le=\"27264.999999999996\"} 23472\n" +
-//                "go_gc_heap_allocs_by_size_bytes_total_bucket{le=\"+Inf\"} 23474\n" +
+                "go_gc_heap_allocs_by_size_bytes_total_bucket{le=\"+Inf\"} 23474\n" +
                 "go_gc_heap_allocs_by_size_bytes_total_sum 2.5694e+06\n" +
                 "go_gc_heap_allocs_by_size_bytes_total_count 23474\n" +
+                "# HELP go_gc_duration_seconds A summary of the pause duration of garbage collection cycles.\n" +
+                "# TYPE go_gc_duration_seconds summary\n" +
+                "go_gc_duration_seconds{quantile=\"0\"} 0\n" +
+                "go_gc_duration_seconds{quantile=\"0.25\"} 0\n" +
+                "go_gc_duration_seconds{quantile=\"0.5\"} 0\n" +
+                "go_gc_duration_seconds{quantile=\"0.75\"} 0\n" +
+                "go_gc_duration_seconds{quantile=\"1\"} 0\n" +
+                "go_gc_duration_seconds_sum 0\n" +
+                "go_gc_duration_seconds_count 0\n" +
+                "# HELP go_gc_heap_allocs_bytes_total Cumulative sum of memory allocated to the heap by the application.\n" +
+                "# TYPE go_gc_heap_allocs_bytes_total counter\n" +
+                "go_gc_heap_allocs_bytes_total 2.5694e+06\n" +
+                "# HELP go_gc_heap_allocs_objects_total Cumulative count of heap allocations triggered by the application. Note that this does not include tiny objects as defined by /gc/heap/tiny/allocs:objects, only tiny blocks.\n" +
+                "# TYPE go_gc_heap_allocs_objects_total counter\n" +
+                "go_gc_heap_allocs_objects_total 23474\n" +
+                "# HELP go_gc_heap_frees_by_size_bytes_total Distribution of freed heap allocations by approximate size. Note that this does not include tiny objects as defined by /gc/heap/tiny/allocs:objects, only tiny blocks.\n" +
+                "# TYPE go_gc_heap_frees_by_size_bytes_total histogram\n" +
+                "go_gc_heap_frees_by_size_bytes_total_bucket{le=\"8.999999999999998\"} 0\n" +
+                "go_gc_heap_frees_by_size_bytes_total_bucket{le=\"24.999999999999996\"} 0\n" +
+                "go_gc_heap_frees_by_size_bytes_total_bucket{le=\"64.99999999999999\"} 0\n" +
+                "go_gc_heap_frees_by_size_bytes_total_bucket{le=\"144.99999999999997\"} 0\n" +
+                "go_gc_heap_frees_by_size_bytes_total_bucket{le=\"320.99999999999994\"} 0\n" +
+                "go_gc_heap_frees_by_size_bytes_total_bucket{le=\"704.9999999999999\"} 0\n" +
+                "go_gc_heap_frees_by_size_bytes_total_bucket{le=\"1536.9999999999998\"} 0\n" +
+                "go_gc_heap_frees_by_size_bytes_total_bucket{le=\"3200.9999999999995\"} 0\n" +
+                "go_gc_heap_frees_by_size_bytes_total_bucket{le=\"6528.999999999999\"} 0\n" +
+                "go_gc_heap_frees_by_size_bytes_total_bucket{le=\"13568.999999999998\"} 0\n" +
+                "go_gc_heap_frees_by_size_bytes_total_bucket{le=\"27264.999999999996\"} 0\n" +
+                "go_gc_heap_frees_by_size_bytes_total_bucket{le=\"+Inf\"} 0\n" +
+                "go_gc_heap_frees_by_size_bytes_total_sum 0\n" +
+                "go_gc_heap_frees_by_size_bytes_total_count 0\n" +
+                "# HELP go_gc_heap_frees_bytes_total Cumulative sum of heap memory freed by the garbage collector.\n" +
+                "# TYPE go_gc_heap_frees_bytes_total counter\n" +
+                "go_gc_heap_frees_bytes_total 0\n" +
+                "# HELP go_gc_heap_frees_objects_total Cumulative count of heap allocations whose storage was freed by the garbage collector. Note that this does not include tiny objects as defined by /gc/heap/tiny/allocs:objects, only tiny blocks.\n" +
+                "# TYPE go_gc_heap_frees_objects_total counter\n" +
+                "go_gc_heap_frees_objects_total 0\n" +
+                "# HELP go_gc_heap_goal_bytes Heap size target for the end of the GC cycle.\n" +
+                "# TYPE go_gc_heap_goal_bytes gauge\n" +
+                "go_gc_heap_goal_bytes 4.473924e+06\n" +
+                "# HELP go_gc_heap_objects_objects Number of objects, live or unswept, occupying heap memory.\n" +
+                "# TYPE go_gc_heap_objects_objects gauge\n" +
+                "go_gc_heap_objects_objects 23474\n" +
+                "# HELP go_gc_heap_tiny_allocs_objects_total Count of small allocations that are packed together into blocks. These allocations are counted separately from other allocations because each individual allocation is not tracked by the runtime, only their block. Each block is already accounted for in allocs-by-size and frees-by-size.\n" +
+                "# TYPE go_gc_heap_tiny_allocs_objects_total counter\n" +
+                "go_gc_heap_tiny_allocs_objects_total 301\n" +
+                "# HELP go_memory_classes_metadata_mcache_free_bytes Memory that is reserved for runtime mcache structures, but not in-use.\n" +
+                "# TYPE go_memory_classes_metadata_mcache_free_bytes gauge\n" +
+                "go_memory_classes_metadata_mcache_free_bytes 7040\n" +
+                "# HELP go_memory_classes_metadata_mcache_inuse_bytes Memory that is occupied by runtime mcache structures that are currently being used.\n" +
+                "# TYPE go_memory_classes_metadata_mcache_inuse_bytes gauge\n" +
+                "go_memory_classes_metadata_mcache_inuse_bytes 9344\n" +
+                "# HELP go_memory_classes_metadata_mspan_free_bytes Memory that is reserved for runtime mspan structures, but not in-use.\n" +
+                "# TYPE go_memory_classes_metadata_mspan_free_bytes gauge\n" +
+                "go_memory_classes_metadata_mspan_free_bytes 2640\n" +
+                "# HELP go_memory_classes_metadata_mspan_inuse_bytes Memory that is occupied by runtime mspan structures that are currently being used.\n" +
+                "# TYPE go_memory_classes_metadata_mspan_inuse_bytes gauge\n" +
+                "go_memory_classes_metadata_mspan_inuse_bytes 46512\n" +
+                "# HELP go_memory_classes_metadata_other_bytes Memory that is reserved for or used to hold runtime metadata.\n" +
+                "# TYPE go_memory_classes_metadata_other_bytes gauge\n" +
+                "go_memory_classes_metadata_other_bytes 1.536992e+06\n" +
+                "# HELP go_memory_classes_os_stacks_bytes Stack memory allocated by the underlying operating system.\n" +
+                "# TYPE go_memory_classes_os_stacks_bytes gauge\n" +
+                "go_memory_classes_os_stacks_bytes 0\n" +
+                "# HELP go_memory_classes_other_bytes Memory used by execution trace buffers, structures for debugging the runtime, finalizer and profiler specials, and more.\n" +
+                "# TYPE go_memory_classes_other_bytes gauge\n" +
+                "go_memory_classes_other_bytes 1.163635e+06\n" +
+                "# HELP go_memory_classes_profiling_buckets_bytes Memory that is used by the stack trace hash map used for profiling.\n" +
+                "# TYPE go_memory_classes_profiling_buckets_bytes gauge\n" +
+                "go_memory_classes_profiling_buckets_bytes 7037\n" +
+                "# HELP go_memory_classes_total_bytes All memory mapped by the Go runtime into the current process as read-write. Note that this does not include memory mapped by code called via cgo or via the syscall package. Sum of all metrics in /memory/classes.\n" +
+                "# TYPE go_memory_classes_total_bytes gauge\n" +
+                "go_memory_classes_total_bytes 6.967504e+06\n" +
+                "# HELP go_memstats_alloc_bytes Number of bytes allocated and still in use.\n" +
+                "# TYPE go_memstats_alloc_bytes gauge\n" +
+                "go_memstats_alloc_bytes 2.5694e+06\n" +
+                "# HELP go_memstats_alloc_bytes_total Total number of bytes allocated, even if freed.\n" +
+                "# TYPE go_memstats_alloc_bytes_total counter\n" +
+                "go_memstats_alloc_bytes_total 2.5694e+06\n" +
+                "# HELP go_memstats_buck_hash_sys_bytes Number of bytes used by the profiling bucket hash table.\n" +
+                "# TYPE go_memstats_buck_hash_sys_bytes gauge\n" +
+                "go_memstats_buck_hash_sys_bytes 7037\n" +
+                "# HELP go_memstats_frees_total Total number of frees.\n" +
+                "# TYPE go_memstats_frees_total counter\n" +
+                "go_memstats_frees_total 301\n" +
+                "# HELP go_memstats_last_gc_time_seconds Number of seconds since 1970 of last garbage collection.\n" +
+                "# TYPE go_memstats_last_gc_time_seconds gauge\n" +
+                "go_memstats_last_gc_time_seconds 0\n" +
+                "# HELP go_memstats_mcache_inuse_bytes Number of bytes in use by mcache structures.\n" +
+                "# TYPE go_memstats_mcache_inuse_bytes gauge\n" +
+                "go_memstats_mcache_inuse_bytes 9344\n" +
+                "# HELP go_memstats_mcache_sys_bytes Number of bytes used for mcache structures obtained from system.\n" +
+                "# TYPE go_memstats_mcache_sys_bytes gauge\n" +
+                "go_memstats_mcache_sys_bytes 16384\n" +
                 "# HELP go_memstats_mspan_inuse_bytes Number of bytes in use by mspan structures.\n" +
                 "# TYPE go_memstats_mspan_inuse_bytes gauge\n" +
                 "go_memstats_mspan_inuse_bytes 46512\n" +
+                "# HELP go_memstats_mspan_sys_bytes Number of bytes used for mspan structures obtained from system.\n" +
+                "# TYPE go_memstats_mspan_sys_bytes gauge\n" +
+                "go_memstats_mspan_sys_bytes 49152\n" +
+                "# HELP go_memstats_next_gc_bytes Number of heap bytes when next garbage collection will take place.\n" +
+                "# TYPE go_memstats_next_gc_bytes gauge\n" +
+                "go_memstats_next_gc_bytes 4.473924e+06\n" +
+                "# HELP go_memstats_other_sys_bytes Number of bytes used for other system allocations.\n" +
+                "# TYPE go_memstats_other_sys_bytes gauge\n" +
+                "go_memstats_other_sys_bytes 1.163635e+06\n" +
+                "# HELP go_memstats_stack_inuse_bytes Number of bytes in use by the stack allocator.\n" +
+                "# TYPE go_memstats_stack_inuse_bytes gauge\n" +
+                "go_memstats_stack_inuse_bytes 163840\n" +
+                "# HELP go_memstats_stack_sys_bytes Number of bytes obtained from system for stack allocator.\n" +
+                "# TYPE go_memstats_stack_sys_bytes gauge\n" +
+                "go_memstats_stack_sys_bytes 163840\n" +
+                "# HELP go_memstats_sys_bytes Number of bytes obtained from system.\n" +
+                "# TYPE go_memstats_sys_bytes gauge\n" +
+                "go_memstats_sys_bytes 6.967504e+06\n" +
+                "# HELP go_sched_goroutines_goroutines Count of live goroutines.\n" +
+                "# TYPE go_sched_goroutines_goroutines gauge\n" +
+                "go_sched_goroutines_goroutines 6\n" +
+                "# HELP go_sched_latencies_seconds Distribution of the time goroutines have spent in the scheduler in a runnable state before actually running.\n" +
+                "# TYPE go_sched_latencies_seconds histogram\n" +
+                "go_sched_latencies_seconds_bucket{le=\"-5e-324\"} 0\n" +
+                "go_sched_latencies_seconds_bucket{le=\"9.999999999999999e-10\"} 34\n" +
+                "go_sched_latencies_seconds_bucket{le=\"9.999999999999999e-09\"} 34\n" +
+                "go_sched_latencies_seconds_bucket{le=\"9.999999999999998e-08\"} 34\n" +
+                "go_sched_latencies_seconds_bucket{le=\"1.0239999999999999e-06\"} 34\n" +
+                "go_sched_latencies_seconds_bucket{le=\"1.0239999999999999e-05\"} 34\n" +
+                "go_sched_latencies_seconds_bucket{le=\"0.00010239999999999998\"} 34\n" +
+                "go_sched_latencies_seconds_bucket{le=\"0.0010485759999999998\"} 34\n" +
+                "go_sched_latencies_seconds_bucket{le=\"0.010485759999999998\"} 34\n" +
+                "go_sched_latencies_seconds_bucket{le=\"0.10485759999999998\"} 34\n" +
+                "go_sched_latencies_seconds_bucket{le=\"+Inf\"} 34\n" +
+                "go_sched_latencies_seconds_sum NaN\n" +
+                "go_sched_latencies_seconds_count 34\n" +
+                "# HELP go_threads Number of OS threads created.\n" +
+                "# TYPE go_threads gauge\n" +
+                "go_threads 7\n" +
+                "# HELP mysql_exporter_collector_duration_seconds Collector time duration.\n" +
+                "# TYPE mysql_exporter_collector_duration_seconds gauge\n" +
+                "mysql_exporter_collector_duration_seconds{collector=\"collect.global_status\"} 0.0573716\n" +
+                "mysql_exporter_collector_duration_seconds{collector=\"collect.global_variables\"} 0.0401132\n" +
+                "mysql_exporter_collector_duration_seconds{collector=\"collect.info_schema.innodb_cmp\"} 0.0605768\n" +
+                "mysql_exporter_collector_duration_seconds{collector=\"collect.info_schema.innodb_cmpmem\"} 0.0607512\n" +
+                "mysql_exporter_collector_duration_seconds{collector=\"collect.info_schema.query_response_time\"} 0.0010332\n" +
+                "mysql_exporter_collector_duration_seconds{collector=\"collect.slave_status\"} 0.0667714\n" +
+                "mysql_exporter_collector_duration_seconds{collector=\"connection\"} 0.0160176\n" +
+                "# HELP mysql_exporter_last_scrape_error Whether the last scrape of metrics from MySQL resulted in an error (1 for error, 0 for success).\n" +
+                "# TYPE mysql_exporter_last_scrape_error gauge\n" +
+                "mysql_exporter_last_scrape_error 0\n" +
+                "# HELP mysql_exporter_scrapes_total Total number of times MySQL was scraped for metrics.\n" +
+                "# TYPE mysql_exporter_scrapes_total counter\n" +
+                "mysql_exporter_scrapes_total 1\n" +
+                "# HELP mysql_global_status_aborted_clients Generic metric from SHOW GLOBAL STATUS.\n" +
+                "# TYPE mysql_global_status_aborted_clients untyped\n" +
+                "mysql_global_status_aborted_clients 0\n" +
                 "# HELP mysql_global_status_aborted_connects Generic metric from SHOW GLOBAL STATUS.\n" +
                 "# TYPE mysql_global_status_aborted_connects untyped\n" +
-                "mysql_global_status_aborted_connects 0";
+                "mysql_global_status_aborted_connects 0\n" +
+                "# HELP mysql_global_status_acl_cache_items_count Generic metric from SHOW GLOBAL STATUS.\n" +
+                "# TYPE mysql_global_status_acl_cache_items_count untyped\n" +
+                "mysql_global_status_acl_cache_items_count 0\n" +
+                "# HELP mysql_global_status_binlog_cache_disk_use Generic metric from SHOW GLOBAL STATUS.\n" +
+                "# TYPE mysql_global_status_binlog_cache_disk_use untyped\n" +
+                "mysql_global_status_binlog_cache_disk_use 0\n" +
+                "# HELP mysql_global_status_binlog_cache_use Generic metric from SHOW GLOBAL STATUS.\n" +
+                "# TYPE mysql_global_status_binlog_cache_use untyped\n" +
+                "mysql_global_status_binlog_cache_use 0\n" +
+                "# HELP mysql_global_status_binlog_stmt_cache_disk_use Generic metric from SHOW GLOBAL STATUS.\n" +
+                "# TYPE mysql_global_status_binlog_stmt_cache_disk_use untyped\n" +
+                "mysql_global_status_binlog_stmt_cache_disk_use 0\n" +
+                "# HELP mysql_global_status_binlog_stmt_cache_use Generic metric from SHOW GLOBAL STATUS.\n" +
+                "# TYPE mysql_global_status_binlog_stmt_cache_use untyped\n" +
+                "mysql_global_status_binlog_stmt_cache_use 0\n" +
+                "# HELP mysql_global_status_buffer_pool_dirty_pages Innodb buffer pool dirty pages.\n" +
+                "# TYPE mysql_global_status_buffer_pool_dirty_pages gauge\n" +
+                "mysql_global_status_buffer_pool_dirty_pages 0\n" +
+                "# HELP mysql_global_status_buffer_pool_page_changes_total Innodb buffer pool page state changes.\n" +
+                "# TYPE mysql_global_status_buffer_pool_page_changes_total counter\n" +
+                "mysql_global_status_buffer_pool_page_changes_total{operation=\"flushed\"} 163\n" +
+                "# HELP mysql_global_status_buffer_pool_pages Innodb buffer pool pages by state.\n" +
+                "# TYPE mysql_global_status_buffer_pool_pages gauge\n" +
+                "mysql_global_status_buffer_pool_pages{state=\"data\"} 1135\n" +
+                "mysql_global_status_buffer_pool_pages{state=\"free\"} 7053\n" +
+                "mysql_global_status_buffer_pool_pages{state=\"misc\"} 4\n" +
+                "# HELP mysql_global_status_bytes_received Generic metric from SHOW GLOBAL STATUS.\n" +
+                "# TYPE mysql_global_status_bytes_received untyped\n" +
+                "mysql_global_status_bytes_received 262\n" +
+                "# HELP mysql_global_status_bytes_sent Generic metric from SHOW GLOBAL STATUS.\n" +
+                "# TYPE mysql_global_status_bytes_sent untyped\n" +
+                "mysql_global_status_bytes_sent 21209\n" +
+                "# HELP mysql_global_status_commands_total Total number of executed MySQL commands.\n" +
+                "# TYPE mysql_global_status_commands_total counter\n" +
+                "mysql_global_status_commands_total{command=\"admin_commands\"} 1\n" +
+                "mysql_global_status_commands_total{command=\"alter_db\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"alter_event\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"alter_function\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"alter_instance\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"alter_procedure\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"alter_resource_group\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"alter_server\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"alter_table\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"alter_tablespace\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"alter_user\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"alter_user_default_role\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"analyze\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"assign_to_keycache\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"begin\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"binlog\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"call_procedure\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"change_db\"} 1\n" +
+                "mysql_global_status_commands_total{command=\"change_master\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"change_repl_filter\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"change_replication_source\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"check\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"checksum\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"clone\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"commit\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"create_db\"} 1\n" +
+                "mysql_global_status_commands_total{command=\"drop_db\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"drop_event\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"drop_function\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"drop_index\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"drop_procedure\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"drop_resource_group\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"drop_role\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"drop_server\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"drop_spatial_reference_system\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"drop_table\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"drop_trigger\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"drop_user\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"drop_view\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"empty_query\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"execute_sql\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"explain_other\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"optimize\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"preload_keys\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"prepare_sql\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"purge\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"purge_before_date\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"release_savepoint\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"rename_table\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"rename_user\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"repair\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"replace\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"replace_select\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"replica_start\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"slave_start\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"slave_stop\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"stmt_close\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"stmt_execute\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"stmt_fetch\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"stmt_prepare\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"stmt_reprepare\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"stmt_reset\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"stmt_send_long_data\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"truncate\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"uninstall_component\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"uninstall_plugin\"} 0\n" +
+                "mysql_global_status_commands_total{command=\"xa_start\"} 0\n" +
+                "# HELP mysql_global_status_error_log_latest_write Generic metric from SHOW GLOBAL STATUS.\n" +
+                "# TYPE mysql_global_status_error_log_latest_write untyped\n" +
+                "mysql_global_status_error_log_latest_write 1.667889270142246e+15\n" +
+                "# HELP mysql_global_status_flush_commands Generic metric from SHOW GLOBAL STATUS.\n" +
+                "# TYPE mysql_global_status_flush_commands untyped\n" +
+                "mysql_global_status_flush_commands 3\n" +
+                "# HELP mysql_global_status_handlers_total Total number of executed MySQL handlers.\n" +
+                "# TYPE mysql_global_status_handlers_total counter\n" +
+                "mysql_global_status_handlers_total{handler=\"commit\"} 597\n" +
+                "mysql_global_status_handlers_total{handler=\"delete\"} 0\n" +
+                "mysql_global_status_handlers_total{handler=\"discover\"} 0\n" +
+                "mysql_global_status_handlers_total{handler=\"external_lock\"} 6135\n" +
+                "mysql_global_status_handlers_total{handler=\"mrr_init\"} 0\n" +
+                "mysql_global_status_handlers_total{handler=\"prepare\"} 0\n" +
+                "mysql_global_status_handlers_total{handler=\"read_first\"} 43\n" +
+                "mysql_global_status_handlers_total{handler=\"read_key\"} 1706\n" +
+                "# HELP mysql_global_status_innodb_dblwr_pages_written Generic metric from SHOW GLOBAL STATUS.\n" +
+                "# TYPE mysql_global_status_innodb_dblwr_pages_written untyped\n" +
+                "mysql_global_status_innodb_dblwr_pages_written 22\n" +
+                "# HELP mysql_global_status_innodb_os_log_fsyncs Generic metric from SHOW GLOBAL STATUS.\n" +
+                "# TYPE mysql_global_status_innodb_os_log_fsyncs untyped\n" +
+                "mysql_global_status_innodb_os_log_fsyncs 8\n" +
+                "# HELP mysql_global_status_innodb_os_log_pending_fsyncs Generic metric from SHOW GLOBAL STATUS.\n" +
+                "# TYPE mysql_global_status_innodb_os_log_pending_fsyncs untyped\n" +
+                "mysql_global_status_innodb_os_log_pending_fsyncs 0\n" +
+                "# HELP mysql_global_status_innodb_os_log_pending_writes Generic metric from SHOW GLOBAL STATUS.\n" +
+                "# TYPE mysql_global_status_innodb_os_log_pending_writes untyped\n" +
+                "mysql_global_status_innodb_os_log_pending_writes 0\n" +
+                "# HELP mysql_global_status_innodb_os_log_written Generic metric from SHOW GLOBAL STATUS.\n" +
+                "# TYPE mysql_global_status_innodb_os_log_written untyped\n" +
+                "mysql_global_status_innodb_os_log_written 29184\n" +
+                "# HELP mysql_global_status_innodb_page_size Generic metric from SHOW GLOBAL STATUS.\n" +
+                "# TYPE mysql_global_status_innodb_page_size untyped\n" +
+                "mysql_global_status_innodb_page_size 16384\n" +
+                "# HELP mysql_info_schema_innodb_cmp_uncompress_time_seconds_total Total time in seconds spent in uncompressing B-tree pages.\n" +
+                "# TYPE mysql_info_schema_innodb_cmp_uncompress_time_seconds_total counter\n" +
+                "mysql_info_schema_innodb_cmp_uncompress_time_seconds_total{page_size=\"1024\"} 0\n" +
+                "mysql_info_schema_innodb_cmp_uncompress_time_seconds_total{page_size=\"16384\"} 0\n" +
+                "mysql_info_schema_innodb_cmp_uncompress_time_seconds_total{page_size=\"2048\"} 0\n" +
+                "mysql_info_schema_innodb_cmp_uncompress_time_seconds_total{page_size=\"4096\"} 0\n" +
+                "mysql_info_schema_innodb_cmp_uncompress_time_seconds_total{page_size=\"8192\"} 0\n" +
+                "# HELP mysql_transaction_isolation MySQL transaction isolation.\n" +
+                "# TYPE mysql_transaction_isolation gauge\n" +
+                "mysql_transaction_isolation{level=\"REPEATABLE-READ\"} 1\n" +
+                "# HELP mysql_up Whether the MySQL server is up.\n" +
+                "# TYPE mysql_up gauge\n" +
+                "mysql_up 1\n" +
+                "# HELP mysql_version_info MySQL version and distribution.\n" +
+                "# TYPE mysql_version_info gauge\n" +
+                "mysql_version_info{innodb_version=\"8.0.25\",version=\"8.0.25\",version_comment=\"MySQL Community Server - GPL\"} 1\n" +
+                "# HELP mysqld_exporter_build_info A metric with a constant '1' value labeled by version, revision, branch, and goversion from which mysqld_exporter was built.\n" +
+                "# TYPE mysqld_exporter_build_info gauge\n" +
+                "mysqld_exporter_build_info{branch=\"HEAD\",goversion=\"go1.17.8\",revision=\"ca1b9af82a471c849c529eb8aadb1aac73e7b68c\",version=\"0.14.0\"} 1\n" +
+                "# HELP process_cpu_seconds_total Total user and system CPU time spent in seconds.\n" +
+                "# TYPE process_cpu_seconds_total counter\n" +
+                "process_cpu_seconds_total 0.015625\n" +
+                "# HELP process_max_fds Maximum number of open file descriptors.\n" +
+                "# TYPE process_max_fds gauge\n" +
+                "process_max_fds 1.6777216e+07\n" +
+                "# HELP process_open_fds Number of open file descriptors.\n" +
+                "# TYPE process_open_fds gauge\n" +
+                "process_open_fds 102\n" +
+                "# HELP process_resident_memory_bytes Resident memory size in bytes.\n" +
+                "# TYPE process_resident_memory_bytes gauge\n" +
+                "process_resident_memory_bytes 1.0862592e+07\n" +
+                "# HELP process_start_time_seconds Start time of the process since unix epoch in seconds.\n" +
+                "# TYPE process_start_time_seconds gauge\n" +
+                "process_start_time_seconds 1.667908248e+09\n" +
+                "# HELP process_virtual_memory_bytes Virtual memory size in bytes.\n" +
+                "# TYPE process_virtual_memory_bytes gauge\n" +
+                "process_virtual_memory_bytes 1.6044032e+07\n" +
+                "# HELP promhttp_metric_handler_requests_in_flight Current number of scrapes being served.\n" +
+                "# TYPE promhttp_metric_handler_requests_in_flight gauge\n" +
+                "promhttp_metric_handler_requests_in_flight 1\n" +
+                "# HELP promhttp_metric_handler_requests_total Total number of scrapes by HTTP status code.\n" +
+                "# TYPE promhttp_metric_handler_requests_total counter\n" +
+                "promhttp_metric_handler_requests_total{code=\"200\"} 0\n" +
+                "promhttp_metric_handler_requests_total{code=\"500\"} 0\n" +
+                "promhttp_metric_handler_requests_total{code=\"503\"} 0";
         ExporterParser parser = new ExporterParser();
         Map<String, MetricFamily> metricFamilyMap = parser.textToMetric(resp);
         for (MetricFamily metricFamily : metricFamilyMap.values()) {
diff --git a/common/src/main/java/com/usthe/common/util/StrBuffer.java b/common/src/main/java/com/usthe/common/util/StrBuffer.java
new file mode 100644
index 00000000000..168d7da12bc
--- /dev/null
+++ b/common/src/main/java/com/usthe/common/util/StrBuffer.java
@@ -0,0 +1,96 @@
+package com.usthe.common.util;
+
+/**
+ * @author ceilzcx
+ * @since 9/11/2022
+ */
+public class StrBuffer {
+    private final char[] chars;
+    private int left;
+    private int right;
+
+    public StrBuffer(String s) {
+        this.chars = s.toCharArray();
+        this.left = 0;
+        this.right = s.length() - 1;
+    }
+
+    // 读取当前字符, left++
+    public char read() {
+        if (left > right) {
+            throw new IndexOutOfBoundsException("StrBuffer use charAt method error. left=" + left + ", right=" + right);
+        }
+        return chars[left++];
+    }
+
+    public void rollback() {
+        if (left > 0) {
+            left--;
+        }
+    }
+
+    // 只查询left+i的下标字符, 不会进行left++的操作
+    public char charAt(int i) {
+        if (left + i > right) {
+            throw new IndexOutOfBoundsException("StrBuffer use charAt method error. left=" + left + ", i=" + i);
+        }
+        return chars[left + i];
+    }
+
+    // char[] -> String
+    public String toStr() {
+        StringBuilder builder = new StringBuilder();
+        for (int i = left; i <= right; i++) {
+            builder.append(chars[i]);
+        }
+        return builder.toString();
+    }
+
+    // char[] -> double
+    // todo golang对于无限大的字符为 +INF, 需要单独处理
+    public double toDouble() {
+        String s = toStr();
+        if (this.isINF(s)) {
+            return Double.MAX_VALUE;
+        }
+        return Double.parseDouble(s);
+    }
+
+    // char[] -> long
+    public long toLong() {
+        String s = toStr();
+        if (this.isINF(s)) {
+            return Long.MAX_VALUE;
+        }
+        return Long.parseLong(s);
+    }
+
+    public void skipBlankTabs() {
+        while (left <= right) {
+            if (this.isBlankOrTab(chars[left])) {
+                left++;
+            } else {
+                break;
+            }
+        }
+        while (right >= left) {
+            if (this.isBlankOrTab(chars[right])) {
+                right--;
+            } else {
+                break;
+            }
+        }
+    }
+
+    private boolean isBlankOrTab(char c) {
+        return c == ' ' || c == '\t';
+    }
+
+    private boolean isINF(String s) {
+        return !s.isEmpty() && s.equals("+Inf");
+    }
+
+    public boolean isEmpty() {
+        return left > right;
+    }
+}

From c86faec8cf3b09ada9c0b4853b9c9a9faf40bd79 Mon Sep 17 00:00:00 2001
From: Ceilzcx <1758619238@qq.com>
Date: Wed, 9 Nov 2022 19:33:02 +0800
Subject: [PATCH 04/22] prometheus exporter metrics parser

---
 .../promethus/exporter/ExporterParser.java    |  5 +++--
 .../http/promethus/exporter/MetricFamily.java | 21 +++++++++++++++++--
 .../com/usthe/common/util/CommonUtil.java     |  6 ++++++
 .../java/com/usthe/common/util/StrBuffer.java |  9 +++-----
 4 files changed, 31 insertions(+), 10 deletions(-)

diff --git a/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java
index fd00c0cc5fb..877a96131de 100644
--- a/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java
+++ b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java
@@ -1,6 +1,7 @@
 package com.usthe.collector.collect.http.promethus.exporter;
 
 import com.usthe.collector.collect.http.promethus.ParseException;
+import com.usthe.common.util.CommonUtil;
 import com.usthe.common.util.StrBuffer;
 import lombok.extern.slf4j.Slf4j;
 
@@ -226,7 +227,7 @@ private void readLabelValue(MetricFamily metricFamily, MetricFamily.Metric metri
                         summary.setQuantileList(quantileList);
                     }
                     MetricFamily.Quantile quantile = new MetricFamily.Quantile();
-                    if (!label.getValue().equals("+Inf")) {
+                    if (!CommonUtil.isINF(label.getValue())) {
                         quantile.setXLabel(Double.parseDouble(label.getValue()));
                     }
                     quantile.setValue(buffer.toDouble());
@@ -255,7 +256,7 @@ private void readLabelValue(MetricFamily metricFamily, MetricFamily.Metric metri
                         histogram.setBucketList(bucketList);
                     }
                     MetricFamily.Bucket bucket = new MetricFamily.Bucket();
-                    if (!label.getValue().equals("+Inf")) {
+                    if (!CommonUtil.isINF(label.getValue())) {
                         bucket.setUpperBound(Double.parseDouble(label.getValue()));
                     }
                     bucket.setCumulativeCount(buffer.toLong());
diff --git a/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/MetricFamily.java b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/MetricFamily.java
index d91b5703ab0..f66aa46ccac 100644
--- a/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/MetricFamily.java
+++ b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/MetricFamily.java
@@ -12,18 +12,35 @@
 @Data
 @ToString
 public class MetricFamily {
-
+    /**
+     * 指标名称
+     * metric name
+     */
     private String name;
 
+    /**
+     * 指标描述
+     * metric help
+     */
     private String help;
 
+    /**
+     * 指标类型
+     * metric type
+     */
     private MetricType metricType;
 
+    /**
+     * 具体的指标
+     */
     private List<Metric> metricList;
 
     @Data
     static class Metric {
 
+        /**
+         * 标签数据, 主要对应{}内容
+         */
         private List<Label> labelPair;
 
         private Gauge gauge;
@@ -79,7 +96,7 @@ static class Summary {
 
     @Data
     static class Quantile {
-
+        // 对应 prometheus 的 quantile 字段
         private double xLabel;
 
         private double value;
diff --git a/common/src/main/java/com/usthe/common/util/CommonUtil.java b/common/src/main/java/com/usthe/common/util/CommonUtil.java
index d64ffae833e..6a099fdf12f 100644
--- a/common/src/main/java/com/usthe/common/util/CommonUtil.java
+++ b/common/src/main/java/com/usthe/common/util/CommonUtil.java
@@ -38,6 +38,8 @@ public class CommonUtil {
 
     private static final int PHONE_LENGTH = 11;
 
+    private static final String INF = "inf";
+
     /**
      * 将字符串str转换为double数字类型
      * @param str string
@@ -103,4 +105,8 @@ public static boolean validatePhoneNum(String phoneNum) {
         Matcher m = PHONE_PATTERN.matcher(phoneNum);
         return m.find();
     }
+
+    public static boolean isINF(String s) {
+        return !s.isEmpty() && s.toLowerCase().endsWith(INF);
+    }
 }
diff --git a/common/src/main/java/com/usthe/common/util/StrBuffer.java b/common/src/main/java/com/usthe/common/util/StrBuffer.java
index 168d7da12bc..02012ebad6f 100644
--- a/common/src/main/java/com/usthe/common/util/StrBuffer.java
+++ b/common/src/main/java/com/usthe/common/util/StrBuffer.java
@@ -3,6 +3,7 @@
 /**
  * @author ceilzcx
  * @since 9/11/2022
+ * 为了避免ExporterParser解析过程中, 使用subString的方式生成过多的String对象, 使用该类控制
  */
 public class StrBuffer {
     private final char[] chars;
@@ -50,7 +51,7 @@ public String toStr() {
     // todo golang对于无限大的字符为 +INF, 需要单独处理
     public double toDouble() {
         String s = toStr();
-        if (this.isINF(s)) {
+        if (CommonUtil.isINF(s)) {
             return Double.MAX_VALUE;
         }
         return Double.parseDouble(s);
@@ -59,7 +60,7 @@ public double toDouble() {
     // char[] -> long
     public long toLong() {
         String s = toStr();
-        if (this.isINF(s)) {
+        if (CommonUtil.isINF(s)) {
             return Long.MAX_VALUE;
         }
         return Long.parseLong(s);
@@ -86,10 +87,6 @@ private boolean isBlankOrTab(char c) {
         return c == ' ' || c == '\t';
     }
 
-    private boolean isINF(String s) {
-        return !s.isEmpty() && s.equals("+Inf");
-    }
-
     public boolean isEmpty() {
         return left > right;
     }

From 78a7682d87e2a2d3b4ca248027eaf21b99aa05e9 Mon Sep 17 00:00:00 2001
From: Ceilzcx <1758619238@qq.com>
Date: Wed, 9 Nov 2022 22:54:51 +0800
Subject: [PATCH 05/22] optimize ExporterParser.java

---
 .../promethus/exporter/ExporterParser.java    | 42 +++++++++----------
 .../http/promethus/exporter/MetricFamily.java |  5 ++-
 2 files changed, 22 insertions(+), 25 deletions(-)

diff --git a/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java
index 877a96131de..60a995883c1 100644
--- a/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java
+++ b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java
@@ -5,6 +5,7 @@
 import com.usthe.common.util.StrBuffer;
 import lombok.extern.slf4j.Slf4j;
 
+import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
@@ -115,17 +116,15 @@ private void parseMetric(Map<String, MetricFamily> metricMap, StrBuffer buffer)
         }
         // todo 这里可能存在问题, 目前逻辑是HISTOGRAM和SUMMARY只创建一个metric, 不知道是否合理, 还需要参照源码
         MetricFamily.Metric metric;
-        if (metricList.isEmpty()) {
+        if (!metricList.isEmpty() &&
+                (metricFamily.getMetricType().equals(MetricType.HISTOGRAM) ||
+                        metricFamily.getMetricType().equals(MetricType.SUMMARY))) {
+            metric = metricList.get(0);
+        } else {
             metric = new MetricFamily.Metric();
             metricList.add(metric);
-        } else {
-            if (metricFamily.getMetricType().equals(MetricType.HISTOGRAM) || metricFamily.getMetricType().equals(MetricType.SUMMARY)) {
-                metric = metricList.get(0);
-            } else {
-                metric = new MetricFamily.Metric();
-                metricList.add(metric);
-            }
         }
+
         this.readLabels(metricFamily, metric, buffer);
     }
 
@@ -170,11 +169,13 @@ private void startReadLabelValue(MetricFamily metricFamily, MetricFamily.Metric
         }
         String labelValue = this.readTokenAsLabelValue(buffer);
         label.setValue(labelValue);
+        if (!this.isValidLabelValue(labelValue)) {
+            throw new ParseException("no valid label value: " + labelValue);
+        }
         if (!(metricFamily.getMetricType().equals(MetricType.SUMMARY) && label.getName().equals(QUANTILE_LABEL))
                 && !(metricFamily.getMetricType().equals(MetricType.HISTOGRAM) && label.getName().equals(BUCKET_LABEL))) {
             metric.getLabelPair().add(label);
         }
-        // todo add method: judge label value is valid
         if (!buffer.isEmpty()) {
             switch (buffer.charAt(0)) {
                 case ',':
@@ -222,10 +223,6 @@ private void readLabelValue(MetricFamily metricFamily, MetricFamily.Metric metri
                 // 处理 "xxx{quantile=\"0\"} 0" 的格式
                 if (label != null && label.getName().equals(QUANTILE_LABEL)) {
                     List<MetricFamily.Quantile> quantileList = summary.getQuantileList();
-                    if (quantileList == null) {
-                        quantileList = new ArrayList<>();
-                        summary.setQuantileList(quantileList);
-                    }
                     MetricFamily.Quantile quantile = new MetricFamily.Quantile();
                     if (!CommonUtil.isINF(label.getValue())) {
                         quantile.setXLabel(Double.parseDouble(label.getValue()));
@@ -234,11 +231,11 @@ private void readLabelValue(MetricFamily metricFamily, MetricFamily.Metric metri
                     quantileList.add(quantile);
                 }
                 // 处理 xxx_sum 的数据
-                if (label != null && this.isSum(label.getName())) {
+                else if (label != null && this.isSum(label.getName())) {
                     summary.setSum(buffer.toDouble());
                 }
                 // 处理 xxx_count 的数据
-                if (label != null && this.isCount(label.getName())) {
+                else if (label != null && this.isCount(label.getName())) {
                     summary.setCount(buffer.toLong());
                 }
                 break;
@@ -251,21 +248,15 @@ private void readLabelValue(MetricFamily metricFamily, MetricFamily.Metric metri
                 // 处理 "xxx{quantile=\"0\"} 0" 的格式
                 if (label != null && label.getName().equals(BUCKET_LABEL)) {
                     List<MetricFamily.Bucket> bucketList = histogram.getBucketList();
-                    if (bucketList == null) {
-                        bucketList = new ArrayList<>();
-                        histogram.setBucketList(bucketList);
-                    }
                     MetricFamily.Bucket bucket = new MetricFamily.Bucket();
                     if (!CommonUtil.isINF(label.getValue())) {
                         bucket.setUpperBound(Double.parseDouble(label.getValue()));
                     }
                     bucket.setCumulativeCount(buffer.toLong());
                     bucketList.add(bucket);
-                }
-                if (label != null && this.isSum(label.getName())) {
+                } else if (label != null && this.isSum(label.getName())) {
                     histogram.setSum(buffer.toDouble());
-                }
-                if (label != null && this.isCount(label.getName())) {
+                } else if (label != null && this.isCount(label.getName())) {
                     histogram.setCount(buffer.toLong());
                 }
                 break;
@@ -379,6 +370,11 @@ private boolean isValidLabelNameContinuation(char c) {
         return isValidLabelNameStart(c) || (c >= '0' && c <= '9');
     }
 
+    // 检测是否是有效的utf8编码的字符串
+    private boolean isValidLabelValue(String s) {
+        return s != null && s.equals(new String(s.getBytes(StandardCharsets.UTF_8)));
+    }
+
     private boolean isSum(String s) {
         return s != null && s.endsWith(SUM_SUFFIX);
     }
diff --git a/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/MetricFamily.java b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/MetricFamily.java
index f66aa46ccac..f565a499a66 100644
--- a/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/MetricFamily.java
+++ b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/MetricFamily.java
@@ -3,6 +3,7 @@
 import lombok.Data;
 import lombok.ToString;
 
+import java.util.ArrayList;
 import java.util.List;
 
 /**
@@ -91,7 +92,7 @@ static class Summary {
 
         private double sum;
 
-        private List<Quantile> quantileList;
+        private List<Quantile> quantileList = new ArrayList<>();
     }
 
     @Data
@@ -109,7 +110,7 @@ static class Histogram {
 
         private double sum;
 
-        private List<Bucket> bucketList;
+        private List<Bucket> bucketList = new ArrayList<>();
     }
 
     @Data

From e07fc6b8170127731e70c4fe9fdb8dcdf371b7be Mon Sep 17 00:00:00 2001
From: Ceilzcx <1758619238@qq.com>
Date: Thu, 10 Nov 2022 11:55:29 +0800
Subject: [PATCH 06/22] optimize ExporterParser.java

---
 .../promethus/exporter/ExporterParser.java    | 38 +++++++++----------
 1 file changed, 18 insertions(+), 20 deletions(-)

diff --git a/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java
index 60a995883c1..a8c3e5283b0 100644
--- a/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java
+++ b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java
@@ -23,6 +23,7 @@ public class ExporterParser {
 
     private static final String QUANTILE_LABEL = "quantile";
     private static final String BUCKET_LABEL = "le";
+    private static final String NAME_LABEL = "__name__";
     private static final String SUM_SUFFIX = "_sum";
     private static final String COUNT_SUFFIX = "_count";
     private static final String BUCKET_SUFFIX = "_bucket";
@@ -57,7 +58,7 @@ private void parseComment(Map<String, MetricFamily> metricMap, StrBuffer buffer)
         if (buffer.isEmpty()) return;
         String token = this.readTokenUnitWhitespace(buffer);
         if (!token.equals(HELP) && !token.equals(TYPE)) {
-            // handle
+            // todo need handle
             return;
         }
         String metricName = this.readTokenAsMetricName(buffer);
@@ -129,6 +130,8 @@ private void parseMetric(Map<String, MetricFamily> metricMap, StrBuffer buffer)
     }
 
     private void readLabels(MetricFamily metricFamily, MetricFamily.Metric metric, StrBuffer buffer) {
+        buffer.skipBlankTabs();
+        if (buffer.isEmpty()) return;
         metric.setLabelPair(new ArrayList<>());
         if (buffer.charAt(0) == '{') {
             buffer.read();
@@ -149,8 +152,8 @@ private void startReadLabelName(MetricFamily metricFamily, MetricFamily.Metric m
             return;
         }
         String labelName = this.readTokenAsLabelName(buffer);
-        if (labelName.isEmpty() || labelName.equals("__name__")) {
-            throw new ParseException("invalid label name, label name size = 0 or label name equals __name__");
+        if (labelName.isEmpty() || labelName.equals(NAME_LABEL)) {
+            throw new ParseException("invalid label name, label name size = 0 or label name equals " + NAME_LABEL);
         }
         MetricFamily.Label label = new MetricFamily.Label();
         label.setName(labelName);
@@ -176,28 +179,23 @@ private void startReadLabelValue(MetricFamily metricFamily, MetricFamily.Metric
                 && !(metricFamily.getMetricType().equals(MetricType.HISTOGRAM) && label.getName().equals(BUCKET_LABEL))) {
             metric.getLabelPair().add(label);
         }
-        if (!buffer.isEmpty()) {
-            switch (buffer.charAt(0)) {
-                case ',':
-                    buffer.read();
-                    this.startReadLabelName(metricFamily, metric, buffer);
-                    break;
-                case '}':
-                    buffer.read();
-                    buffer.skipBlankTabs();
-                    if (buffer.isEmpty()) {
-                        return;
-                    }
-                    this.readLabelValue(metricFamily, metric, label, buffer);
-                    break;
-                default:
-                    throw new ParseException("expected '}' or ',' at end of label value");
-            }
+        if (buffer.isEmpty()) return;
+        c = buffer.read();
+        switch (c) {
+            case ',':
+                this.startReadLabelName(metricFamily, metric, buffer);
+                break;
+            case '}':
+                this.readLabelValue(metricFamily, metric, label, buffer);
+                break;
+            default:
+                throw new ParseException("expected '}' or ',' at end of label value");
         }
     }
 
     private void readLabelValue(MetricFamily metricFamily, MetricFamily.Metric metric, MetricFamily.Label label, StrBuffer buffer) {
         buffer.skipBlankTabs();
+        if (buffer.isEmpty()) return;
         switch (metricFamily.getMetricType()) {
             case COUNTER:
                 MetricFamily.Counter counter = new MetricFamily.Counter();

From bdcd31d5f49940c29af384cf2a97d6a6ba223f6f Mon Sep 17 00:00:00 2001
From: Ceilzcx <1758619238@qq.com>
Date: Fri, 11 Nov 2022 10:15:57 +0800
Subject: [PATCH 07/22] optimize ExporterParser.java

---
 .../collect/http/promethus/exporter/ExporterParser.java      | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java
index a8c3e5283b0..93dba9cab5d 100644
--- a/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java
+++ b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java
@@ -58,7 +58,7 @@ private void parseComment(Map<String, MetricFamily> metricMap, StrBuffer buffer)
         if (buffer.isEmpty()) return;
         String token = this.readTokenUnitWhitespace(buffer);
         if (!token.equals(HELP) && !token.equals(TYPE)) {
-            // todo need handle
+            log.error("parse comment error {}, start without {} or {}", buffer.toStr(), HELP, TYPE);
             return;
         }
         String metricName = this.readTokenAsMetricName(buffer);
@@ -115,7 +115,8 @@ private void parseMetric(Map<String, MetricFamily> metricMap, StrBuffer buffer)
             metricList = new ArrayList<>();
             metricFamily.setMetricList(metricList);
         }
-        // todo 这里可能存在问题, 目前逻辑是HISTOGRAM和SUMMARY只创建一个metric, 不知道是否合理, 还需要参照源码
+        // todo 这里可能存在问题, 目前逻辑是HISTOGRAM和SUMMARY只创建一个metric
+        //  相比源码有所改动: 源码通过属性存储解析结果; 这边通过参数传递
         MetricFamily.Metric metric;
         if (!metricList.isEmpty() &&
                 (metricFamily.getMetricType().equals(MetricType.HISTOGRAM) ||

From 8d5b814f112b15f6054c4aae1913eca75e73a3a5 Mon Sep 17 00:00:00 2001
From: Ceilzcx <1758619238@qq.com>
Date: Fri, 11 Nov 2022 11:34:22 +0800
Subject: [PATCH 08/22] handle INF parser

---
 .../promethus/exporter/ExporterParser.java    |  9 +----
 .../com/usthe/common/util/CommonUtil.java     |  5 ---
 .../java/com/usthe/common/util/StrBuffer.java | 37 ++++++++++++++-----
 3 files changed, 30 insertions(+), 21 deletions(-)

diff --git a/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java
index 93dba9cab5d..3a1f1ea67c8 100644
--- a/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java
+++ b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java
@@ -1,7 +1,6 @@
 package com.usthe.collector.collect.http.promethus.exporter;
 
 import com.usthe.collector.collect.http.promethus.ParseException;
-import com.usthe.common.util.CommonUtil;
 import com.usthe.common.util.StrBuffer;
 import lombok.extern.slf4j.Slf4j;
 
@@ -223,9 +222,7 @@ private void readLabelValue(MetricFamily metricFamily, MetricFamily.Metric metri
                 if (label != null && label.getName().equals(QUANTILE_LABEL)) {
                     List<MetricFamily.Quantile> quantileList = summary.getQuantileList();
                     MetricFamily.Quantile quantile = new MetricFamily.Quantile();
-                    if (!CommonUtil.isINF(label.getValue())) {
-                        quantile.setXLabel(Double.parseDouble(label.getValue()));
-                    }
+                    quantile.setXLabel(StrBuffer.parseDouble(label.getValue()));
                     quantile.setValue(buffer.toDouble());
                     quantileList.add(quantile);
                 }
@@ -248,9 +245,7 @@ else if (label != null && this.isCount(label.getName())) {
                 if (label != null && label.getName().equals(BUCKET_LABEL)) {
                     List<MetricFamily.Bucket> bucketList = histogram.getBucketList();
                     MetricFamily.Bucket bucket = new MetricFamily.Bucket();
-                    if (!CommonUtil.isINF(label.getValue())) {
-                        bucket.setUpperBound(Double.parseDouble(label.getValue()));
-                    }
+                    bucket.setUpperBound(StrBuffer.parseDouble(label.getValue()));
                     bucket.setCumulativeCount(buffer.toLong());
                     bucketList.add(bucket);
                 } else if (label != null && this.isSum(label.getName())) {
diff --git a/common/src/main/java/com/usthe/common/util/CommonUtil.java b/common/src/main/java/com/usthe/common/util/CommonUtil.java
index 6a099fdf12f..2cba87e91e5 100644
--- a/common/src/main/java/com/usthe/common/util/CommonUtil.java
+++ b/common/src/main/java/com/usthe/common/util/CommonUtil.java
@@ -38,8 +38,6 @@ public class CommonUtil {
 
     private static final int PHONE_LENGTH = 11;
 
-    private static final String INF = "inf";
-
     /**
      * 将字符串str转换为double数字类型
      * @param str string
@@ -106,7 +104,4 @@ public static boolean validatePhoneNum(String phoneNum) {
         return m.find();
     }
 
-    public static boolean isINF(String s) {
-        return !s.isEmpty() && s.toLowerCase().endsWith(INF);
-    }
 }
diff --git a/common/src/main/java/com/usthe/common/util/StrBuffer.java b/common/src/main/java/com/usthe/common/util/StrBuffer.java
index 02012ebad6f..6c990c15c68 100644
--- a/common/src/main/java/com/usthe/common/util/StrBuffer.java
+++ b/common/src/main/java/com/usthe/common/util/StrBuffer.java
@@ -6,6 +6,11 @@
  * 为了避免ExporterParser解析过程中, 使用subString的方式生成过多的String对象, 使用该类控制
  */
 public class StrBuffer {
+    private static final String POSITIVE_INF = "+inf";
+    private static final String NEGATIVE_INF = "-inf";
+    private static final long POSITIVE_INF_VALUE = 0x7FF0000000000000L;
+    private static final long NEGATIVE_INF_VALUE = 0xFFF0000000000000L;
+
     private final char[] chars;
     private int left;
     private int right;
@@ -48,22 +53,15 @@ public String toStr() {
     }
 
     // char[] -> double
-    // todo golang对于无限大的字符为 +INF, 需要单独处理
     public double toDouble() {
         String s = toStr();
-        if (CommonUtil.isINF(s)) {
-            return Double.MAX_VALUE;
-        }
-        return Double.parseDouble(s);
+        return parseDouble(s);
     }
 
     // char[] -> long
     public long toLong() {
         String s = toStr();
-        if (CommonUtil.isINF(s)) {
-            return Long.MAX_VALUE;
-        }
-        return Long.parseLong(s);
+        return parseLong(s);
     }
 
     public void skipBlankTabs() {
@@ -90,4 +88,25 @@ private boolean isBlankOrTab(char c) {
     public boolean isEmpty() {
         return left > right;
     }
+
+    // string -> long, 需要判断是否为INF
+    public static long parseLong(String s) {
+        if (POSITIVE_INF.equalsIgnoreCase(s)) {
+            return POSITIVE_INF_VALUE;
+        }
+        if (NEGATIVE_INF.equalsIgnoreCase(s)) {
+            return NEGATIVE_INF_VALUE;
+        }
+        return Long.parseLong(s);
+    }
+
+    // string -> double, 需要判断是否为INF
+    public static double parseDouble(String s) {
+        if (POSITIVE_INF.equalsIgnoreCase(s)) {
+            return POSITIVE_INF_VALUE;
+        } else if (NEGATIVE_INF.equalsIgnoreCase(s)) {
+            return NEGATIVE_INF_VALUE;
+        }
+        return Double.parseDouble(s);
+    }
 }

From dd0e56ac01237065ac764289bc033dad4e3c3935 Mon Sep 17 00:00:00 2001
From: Ceilzcx <1758619238@qq.com>
Date: Sat, 3 Dec 2022 17:27:18 +0800
Subject: [PATCH 09/22] =?UTF-8?q?=E6=B7=BB=E5=8A=A0iotdb=E7=9A=84exporter?=
 =?UTF-8?q?=E6=96=B9=E5=BC=8F=E7=9B=91=E5=90=AC?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../collect/http/HttpCollectImpl.java         |  35 ++
 .../promethus/exporter/ExporterParser.java    | 425 ++----------------
 .../http/promethus/exporter/MetricFamily.java |  18 +-
 .../collector/dispatch/DispatchConstants.java |   5 +
 manager/src/main/resources/application.yml    |  34 +-
 .../main/resources/define/app/app-iotdb.yml   |  58 +++
 .../resources/define/param/param-iotdb.yml    |  38 ++
 7 files changed, 199 insertions(+), 414 deletions(-)
 create mode 100644 manager/src/main/resources/define/app/app-iotdb.yml
 create mode 100644 manager/src/main/resources/define/param/param-iotdb.yml

diff --git a/collector/src/main/java/com/usthe/collector/collect/http/HttpCollectImpl.java b/collector/src/main/java/com/usthe/collector/collect/http/HttpCollectImpl.java
index 2cc8b265a6c..efd8393c6d3 100644
--- a/collector/src/main/java/com/usthe/collector/collect/http/HttpCollectImpl.java
+++ b/collector/src/main/java/com/usthe/collector/collect/http/HttpCollectImpl.java
@@ -23,6 +23,8 @@
 import com.google.gson.JsonParser;
 import com.usthe.collector.collect.AbstractCollect;
 import com.usthe.collector.collect.common.http.CommonHttpClient;
+import com.usthe.collector.collect.http.promethus.exporter.ExporterParser;
+import com.usthe.collector.collect.http.promethus.exporter.MetricFamily;
 import com.usthe.collector.dispatch.DispatchConstants;
 import com.usthe.collector.util.CollectUtil;
 import com.usthe.collector.util.CollectorConstants;
@@ -76,6 +78,7 @@
 import java.util.LinkedList;
 import java.util.List;
 import java.util.Map;
+import java.util.stream.Collectors;
 
 
 /**
@@ -128,6 +131,8 @@ public void collect(CollectRep.MetricsData.Builder builder,
                         parseResponseByJsonPath(resp, metrics.getAliasFields(), metrics.getHttp(), builder, responseTime);
                     } else if (DispatchConstants.PARSE_PROM_QL.equalsIgnoreCase(parseType)) {
                         parseResponseByPromQL(resp, metrics.getAliasFields(), metrics.getHttp(), builder);
+                    } else if (DispatchConstants.PARSE_PROMETHEUS_EXPORTER.equals(parseType)) {
+                        parseResponseByPrometheusExporter(resp, metrics.getAliasFields(), builder);
                     } else if (DispatchConstants.PARSE_XML_PATH.equals(parseType)) {
                         parseResponseByXmlPath(resp, metrics.getAliasFields(), metrics.getHttp(), builder);
                     } else if (DispatchConstants.PARSE_WEBSITE.equals(parseType)){
@@ -364,6 +369,36 @@ private void parseResponseByPromQL(String resp, List<String> aliasFields, HttpPr
         prometheusParser.handle(resp,aliasFields,http,builder);
     }
 
+    private void parseResponseByPrometheusExporter(String resp, List<String> aliasFields,
+                                                   CollectRep.MetricsData.Builder builder) {
+        ExporterParser parser = new ExporterParser();
+        Map<String, MetricFamily> metricFamilyMap = parser.textToMetric(resp);
+        String metrics = builder.getMetrics();
+        if (metricFamilyMap.containsKey(metrics)) {
+            MetricFamily metricFamily = metricFamilyMap.get(metrics);
+            for (MetricFamily.Metric metric : metricFamily.getMetricList()) {
+                Map<String, String> labelMap = metric.getLabelPair()
+                        .stream()
+                        .collect(Collectors.toMap(MetricFamily.Label::getName, MetricFamily.Label::getValue));
+                CollectRep.ValueRow.Builder valueRowBuilder = CollectRep.ValueRow.newBuilder();
+                for (String aliasField : aliasFields) {
+                    if ("value".equals(aliasField)) {
+                        if (metric.getCounter() != null) {
+                            valueRowBuilder.addColumns(metric.getCounter().getValue() + "");
+                        } else if (metric.getGauge() != null) {
+                            valueRowBuilder.addColumns(metric.getGauge().getValue() + "");
+                        } else if (metric.getUntyped() != null) {
+                            valueRowBuilder.addColumns(metric.getUntyped().getValue() + "");
+                        }
+                    } else {
+                        valueRowBuilder.addColumns(labelMap.get(aliasField));
+                    }
+                }
+                builder.addValues(valueRowBuilder.build());
+            }
+        }
+    }
+
     private void parseResponseByDefault(String resp, List<String> aliasFields, HttpProtocol http,
                                         CollectRep.MetricsData.Builder builder, Long responseTime) {
         JsonElement element = JsonParser.parseString(resp);
diff --git a/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java
index 3a1f1ea67c8..95698945568 100644
--- a/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java
+++ b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java
@@ -3,6 +3,7 @@
 import com.usthe.collector.collect.http.promethus.ParseException;
 import com.usthe.common.util.StrBuffer;
 import lombok.extern.slf4j.Slf4j;
+import org.apache.commons.lang.StringUtils;
 
 import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
@@ -13,6 +14,7 @@
 /**
  * @author ceilzcx
  * @since 7/11/2022
+ * 解析prometheus的exporter接口传递的数据 http:xxx/metrics
  * 参考: prometheus的text_parse.go的代码, 入口: TextToMetricFamilies
  */
 @Slf4j
@@ -27,6 +29,9 @@ public class ExporterParser {
     private static final String COUNT_SUFFIX = "_count";
     private static final String BUCKET_SUFFIX = "_bucket";
 
+    private String currentQuantile;
+    private String currentBucket;
+
     public Map<String, MetricFamily> textToMetric(String resp) {
         // key: metric name, value: metric family
         Map<String, MetricFamily> metricMap = new ConcurrentHashMap<>();
@@ -48,6 +53,8 @@ private void parseLine(Map<String, MetricFamily> metricMap, StrBuffer buffer) {
             case '\n':
                 break;
             default:
+                this.currentBucket = null;
+                this.currentQuantile = null;
                 this.parseMetric(metricMap, buffer);
         }
     }
@@ -106,7 +113,7 @@ private void parseMetric(Map<String, MetricFamily> metricMap, StrBuffer buffer)
             } else if (this.isCount(metricName) || this.isSum(metricName)) {
                 MetricFamily.Label label = new MetricFamily.Label();
                 label.setName(metricName);
-                this.readLabelValue(metricFamily, metricFamily.getMetricList().get(0), label, buffer);
+                this.readLabels(metricFamily, metricFamily.getMetricList().get(0), label, buffer);
             }
         }
         List<MetricFamily.Metric> metricList = metricFamily.getMetricList();
@@ -126,10 +133,10 @@ private void parseMetric(Map<String, MetricFamily> metricMap, StrBuffer buffer)
             metricList.add(metric);
         }
 
-        this.readLabels(metricFamily, metric, buffer);
+        this.readLabels(metricFamily, metric, null, buffer);
     }
 
-    private void readLabels(MetricFamily metricFamily, MetricFamily.Metric metric, StrBuffer buffer) {
+    private void readLabels(MetricFamily metricFamily, MetricFamily.Metric metric, MetricFamily.Label label, StrBuffer buffer) {
         buffer.skipBlankTabs();
         if (buffer.isEmpty()) return;
         metric.setLabelPair(new ArrayList<>());
@@ -137,7 +144,7 @@ private void readLabels(MetricFamily metricFamily, MetricFamily.Metric metric, S
             buffer.read();
             this.startReadLabelName(metricFamily, metric, buffer);
         } else {
-            this.readLabelValue(metricFamily, metric, null, buffer);
+            this.readLabelValue(metricFamily, metric, label, buffer);
         }
     }
 
@@ -148,12 +155,12 @@ private void startReadLabelName(MetricFamily metricFamily, MetricFamily.Metric m
             buffer.read();
             buffer.skipBlankTabs();
             if (buffer.isEmpty()) return;
-            this.startReadLabelValue(metricFamily, metric, new MetricFamily.Label(), buffer);
+            this.readLabelValue(metricFamily, metric, new MetricFamily.Label(), buffer);
             return;
         }
         String labelName = this.readTokenAsLabelName(buffer);
         if (labelName.isEmpty() || labelName.equals(NAME_LABEL)) {
-            throw new ParseException("invalid label name, label name size = 0 or label name equals " + NAME_LABEL);
+            throw new ParseException("invalid label name" + labelName + ", label name size = 0 or label name equals " + NAME_LABEL);
         }
         MetricFamily.Label label = new MetricFamily.Label();
         label.setName(labelName);
@@ -168,15 +175,18 @@ private void startReadLabelValue(MetricFamily metricFamily, MetricFamily.Metric
         if (buffer.isEmpty()) return;
         char c = buffer.read();
         if (c != '"') {
-            throw new ParseException("expected '\"' at start of label value");
+            throw new ParseException("expected '\"' at start of label value, line: " + buffer.toStr());
         }
         String labelValue = this.readTokenAsLabelValue(buffer);
         label.setValue(labelValue);
         if (!this.isValidLabelValue(labelValue)) {
             throw new ParseException("no valid label value: " + labelValue);
         }
-        if (!(metricFamily.getMetricType().equals(MetricType.SUMMARY) && label.getName().equals(QUANTILE_LABEL))
-                && !(metricFamily.getMetricType().equals(MetricType.HISTOGRAM) && label.getName().equals(BUCKET_LABEL))) {
+        if (metricFamily.getMetricType().equals(MetricType.SUMMARY) && label.getName().equals(QUANTILE_LABEL)) {
+            this.currentQuantile = labelValue;
+        } else if (metricFamily.getMetricType().equals(MetricType.HISTOGRAM) && label.getName().equals(BUCKET_LABEL)) {
+            this.currentBucket = labelValue;
+        } else {
             metric.getLabelPair().add(label);
         }
         if (buffer.isEmpty()) return;
@@ -189,7 +199,7 @@ private void startReadLabelValue(MetricFamily metricFamily, MetricFamily.Metric
                 this.readLabelValue(metricFamily, metric, label, buffer);
                 break;
             default:
-                throw new ParseException("expected '}' or ',' at end of label value");
+                throw new ParseException("expected '}' or ',' at end of label value, line: " + buffer.toStr());
         }
     }
 
@@ -218,22 +228,22 @@ private void readLabelValue(MetricFamily metricFamily, MetricFamily.Metric metri
                     summary = new MetricFamily.Summary();
                     metric.setSummary(summary);
                 }
-                // 处理 "xxx{quantile=\"0\"} 0" 的格式
-                if (label != null && label.getName().equals(QUANTILE_LABEL)) {
-                    List<MetricFamily.Quantile> quantileList = summary.getQuantileList();
-                    MetricFamily.Quantile quantile = new MetricFamily.Quantile();
-                    quantile.setXLabel(StrBuffer.parseDouble(label.getValue()));
-                    quantile.setValue(buffer.toDouble());
-                    quantileList.add(quantile);
-                }
                 // 处理 xxx_sum 的数据
-                else if (label != null && this.isSum(label.getName())) {
+                if (label != null && this.isSum(label.getName())) {
                     summary.setSum(buffer.toDouble());
                 }
                 // 处理 xxx_count 的数据
                 else if (label != null && this.isCount(label.getName())) {
                     summary.setCount(buffer.toLong());
                 }
+                // 处理 "xxx{quantile=\"0\"} 0" 的格式
+                else if (StringUtils.isNotEmpty(this.currentQuantile)) {
+                    List<MetricFamily.Quantile> quantileList = summary.getQuantileList();
+                    MetricFamily.Quantile quantile = new MetricFamily.Quantile();
+                    quantile.setXLabel(StrBuffer.parseDouble(this.currentQuantile));
+                    quantile.setValue(buffer.toDouble());
+                    quantileList.add(quantile);
+                }
                 break;
             case HISTOGRAM:
                 MetricFamily.Histogram histogram = metric.getHistogram();
@@ -241,17 +251,19 @@ else if (label != null && this.isCount(label.getName())) {
                     histogram = new MetricFamily.Histogram();
                     metric.setHistogram(histogram);
                 }
+                if (label != null && this.isSum(label.getName())) {
+                    histogram.setSum(buffer.toDouble());
+                }
+                else if (label != null && this.isCount(label.getName())) {
+                    histogram.setCount(buffer.toLong());
+                }
                 // 处理 "xxx{quantile=\"0\"} 0" 的格式
-                if (label != null && label.getName().equals(BUCKET_LABEL)) {
+                else if (StringUtils.isNotEmpty(this.currentBucket)) {
                     List<MetricFamily.Bucket> bucketList = histogram.getBucketList();
                     MetricFamily.Bucket bucket = new MetricFamily.Bucket();
-                    bucket.setUpperBound(StrBuffer.parseDouble(label.getValue()));
+                    bucket.setUpperBound(StrBuffer.parseDouble(this.currentBucket));
                     bucket.setCumulativeCount(buffer.toLong());
                     bucketList.add(bucket);
-                } else if (label != null && this.isSum(label.getName())) {
-                    histogram.setSum(buffer.toDouble());
-                } else if (label != null && this.isCount(label.getName())) {
-                    histogram.setCount(buffer.toLong());
                 }
                 break;
             default:
@@ -381,367 +393,4 @@ private boolean isBucket(String s) {
         return s != null && s.endsWith(BUCKET_SUFFIX);
     }
 
-    public static void main(String[] args) {
-        String resp = "# HELP go_gc_cycles_automatic_gc_cycles_total Count of completed GC cycles generated by the Go runtime.\n" +
-                "# TYPE go_gc_cycles_automatic_gc_cycles_total counter\n" +
-                "go_gc_cycles_automatic_gc_cycles_total 0\n" +
-                "# HELP go_gc_heap_allocs_by_size_bytes_total Distribution of heap allocations by approximate size. Note that this does not include tiny objects as defined by /gc/heap/tiny/allocs:objects, only tiny blocks.\n" +
-                "# TYPE go_gc_heap_allocs_by_size_bytes_total histogram\n" +
-                "go_gc_heap_allocs_by_size_bytes_total_bucket{le=\"8.999999999999998\"} 4096\n" +
-                "go_gc_heap_allocs_by_size_bytes_total_bucket{le=\"24.999999999999996\"} 12285\n" +
-                "go_gc_heap_allocs_by_size_bytes_total_bucket{le=\"64.99999999999999\"} 17695\n" +
-                "go_gc_heap_allocs_by_size_bytes_total_bucket{le=\"144.99999999999997\"} 20775\n" +
-                "go_gc_heap_allocs_by_size_bytes_total_bucket{le=\"320.99999999999994\"} 22503\n" +
-                "go_gc_heap_allocs_by_size_bytes_total_bucket{le=\"704.9999999999999\"} 23097\n" +
-                "go_gc_heap_allocs_by_size_bytes_total_bucket{le=\"1536.9999999999998\"} 23285\n" +
-                "go_gc_heap_allocs_by_size_bytes_total_bucket{le=\"3200.9999999999995\"} 23386\n" +
-                "go_gc_heap_allocs_by_size_bytes_total_bucket{le=\"6528.999999999999\"} 23436\n" +
-                "go_gc_heap_allocs_by_size_bytes_total_bucket{le=\"13568.999999999998\"} 23466\n" +
-                "go_gc_heap_allocs_by_size_bytes_total_bucket{le=\"27264.999999999996\"} 23472\n" +
-                "go_gc_heap_allocs_by_size_bytes_total_bucket{le=\"+Inf\"} 23474\n" +
-                "go_gc_heap_allocs_by_size_bytes_total_sum 2.5694e+06\n" +
-                "go_gc_heap_allocs_by_size_bytes_total_count 23474\n" +
-                "# HELP go_gc_duration_seconds A summary of the pause duration of garbage collection cycles.\n" +
-                "# TYPE go_gc_duration_seconds summary\n" +
-                "go_gc_duration_seconds{quantile=\"0\"} 0\n" +
-                "go_gc_duration_seconds{quantile=\"0.25\"} 0\n" +
-                "go_gc_duration_seconds{quantile=\"0.5\"} 0\n" +
-                "go_gc_duration_seconds{quantile=\"0.75\"} 0\n" +
-                "go_gc_duration_seconds{quantile=\"1\"} 0\n" +
-                "go_gc_duration_seconds_sum 0\n" +
-                "go_gc_duration_seconds_count 0\n" +
-                "# HELP go_gc_heap_allocs_bytes_total Cumulative sum of memory allocated to the heap by the application.\n" +
-                "# TYPE go_gc_heap_allocs_bytes_total counter\n" +
-                "go_gc_heap_allocs_bytes_total 2.5694e+06\n" +
-                "# HELP go_gc_heap_allocs_objects_total Cumulative count of heap allocations triggered by the application. Note that this does not include tiny objects as defined by /gc/heap/tiny/allocs:objects, only tiny blocks.\n" +
-                "# TYPE go_gc_heap_allocs_objects_total counter\n" +
-                "go_gc_heap_allocs_objects_total 23474\n" +
-                "# HELP go_gc_heap_frees_by_size_bytes_total Distribution of freed heap allocations by approximate size. Note that this does not include tiny objects as defined by /gc/heap/tiny/allocs:objects, only tiny blocks.\n" +
-                "# TYPE go_gc_heap_frees_by_size_bytes_total histogram\n" +
-                "go_gc_heap_frees_by_size_bytes_total_bucket{le=\"8.999999999999998\"} 0\n" +
-                "go_gc_heap_frees_by_size_bytes_total_bucket{le=\"24.999999999999996\"} 0\n" +
-                "go_gc_heap_frees_by_size_bytes_total_bucket{le=\"64.99999999999999\"} 0\n" +
-                "go_gc_heap_frees_by_size_bytes_total_bucket{le=\"144.99999999999997\"} 0\n" +
-                "go_gc_heap_frees_by_size_bytes_total_bucket{le=\"320.99999999999994\"} 0\n" +
-                "go_gc_heap_frees_by_size_bytes_total_bucket{le=\"704.9999999999999\"} 0\n" +
-                "go_gc_heap_frees_by_size_bytes_total_bucket{le=\"1536.9999999999998\"} 0\n" +
-                "go_gc_heap_frees_by_size_bytes_total_bucket{le=\"3200.9999999999995\"} 0\n" +
-                "go_gc_heap_frees_by_size_bytes_total_bucket{le=\"6528.999999999999\"} 0\n" +
-                "go_gc_heap_frees_by_size_bytes_total_bucket{le=\"13568.999999999998\"} 0\n" +
-                "go_gc_heap_frees_by_size_bytes_total_bucket{le=\"27264.999999999996\"} 0\n" +
-                "go_gc_heap_frees_by_size_bytes_total_bucket{le=\"+Inf\"} 0\n" +
-                "go_gc_heap_frees_by_size_bytes_total_sum 0\n" +
-                "go_gc_heap_frees_by_size_bytes_total_count 0\n" +
-                "# HELP go_gc_heap_frees_bytes_total Cumulative sum of heap memory freed by the garbage collector.\n" +
-                "# TYPE go_gc_heap_frees_bytes_total counter\n" +
-                "go_gc_heap_frees_bytes_total 0\n" +
-                "# HELP go_gc_heap_frees_objects_total Cumulative count of heap allocations whose storage was freed by the garbage collector. Note that this does not include tiny objects as defined by /gc/heap/tiny/allocs:objects, only tiny blocks.\n" +
-                "# TYPE go_gc_heap_frees_objects_total counter\n" +
-                "go_gc_heap_frees_objects_total 0\n" +
-                "# HELP go_gc_heap_goal_bytes Heap size target for the end of the GC cycle.\n" +
-                "# TYPE go_gc_heap_goal_bytes gauge\n" +
-                "go_gc_heap_goal_bytes 4.473924e+06\n" +
-                "# HELP go_gc_heap_objects_objects Number of objects, live or unswept, occupying heap memory.\n" +
-                "# TYPE go_gc_heap_objects_objects gauge\n" +
-                "go_gc_heap_objects_objects 23474\n" +
-                "# HELP go_gc_heap_tiny_allocs_objects_total Count of small allocations that are packed together into blocks. These allocations are counted separately from other allocations because each individual allocation is not tracked by the runtime, only their block. Each block is already accounted for in allocs-by-size and frees-by-size.\n" +
-                "# TYPE go_gc_heap_tiny_allocs_objects_total counter\n" +
-                "go_gc_heap_tiny_allocs_objects_total 301\n" +
-                "# HELP go_memory_classes_metadata_mcache_free_bytes Memory that is reserved for runtime mcache structures, but not in-use.\n" +
-                "# TYPE go_memory_classes_metadata_mcache_free_bytes gauge\n" +
-                "go_memory_classes_metadata_mcache_free_bytes 7040\n" +
-                "# HELP go_memory_classes_metadata_mcache_inuse_bytes Memory that is occupied by runtime mcache structures that are currently being used.\n" +
-                "# TYPE go_memory_classes_metadata_mcache_inuse_bytes gauge\n" +
-                "go_memory_classes_metadata_mcache_inuse_bytes 9344\n" +
-                "# HELP go_memory_classes_metadata_mspan_free_bytes Memory that is reserved for runtime mspan structures, but not in-use.\n" +
-                "# TYPE go_memory_classes_metadata_mspan_free_bytes gauge\n" +
-                "go_memory_classes_metadata_mspan_free_bytes 2640\n" +
-                "# HELP go_memory_classes_metadata_mspan_inuse_bytes Memory that is occupied by runtime mspan structures that are currently being used.\n" +
-                "# TYPE go_memory_classes_metadata_mspan_inuse_bytes gauge\n" +
-                "go_memory_classes_metadata_mspan_inuse_bytes 46512\n" +
-                "# HELP go_memory_classes_metadata_other_bytes Memory that is reserved for or used to hold runtime metadata.\n" +
-                "# TYPE go_memory_classes_metadata_other_bytes gauge\n" +
-                "go_memory_classes_metadata_other_bytes 1.536992e+06\n" +
-                "# HELP go_memory_classes_os_stacks_bytes Stack memory allocated by the underlying operating system.\n" +
-                "# TYPE go_memory_classes_os_stacks_bytes gauge\n" +
-                "go_memory_classes_os_stacks_bytes 0\n" +
-                "# HELP go_memory_classes_other_bytes Memory used by execution trace buffers, structures for debugging the runtime, finalizer and profiler specials, and more.\n" +
-                "# TYPE go_memory_classes_other_bytes gauge\n" +
-                "go_memory_classes_other_bytes 1.163635e+06\n" +
-                "# HELP go_memory_classes_profiling_buckets_bytes Memory that is used by the stack trace hash map used for profiling.\n" +
-                "# TYPE go_memory_classes_profiling_buckets_bytes gauge\n" +
-                "go_memory_classes_profiling_buckets_bytes 7037\n" +
-                "# HELP go_memory_classes_total_bytes All memory mapped by the Go runtime into the current process as read-write. Note that this does not include memory mapped by code called via cgo or via the syscall package. Sum of all metrics in /memory/classes.\n" +
-                "# TYPE go_memory_classes_total_bytes gauge\n" +
-                "go_memory_classes_total_bytes 6.967504e+06\n" +
-                "# HELP go_memstats_alloc_bytes Number of bytes allocated and still in use.\n" +
-                "# TYPE go_memstats_alloc_bytes gauge\n" +
-                "go_memstats_alloc_bytes 2.5694e+06\n" +
-                "# HELP go_memstats_alloc_bytes_total Total number of bytes allocated, even if freed.\n" +
-                "# TYPE go_memstats_alloc_bytes_total counter\n" +
-                "go_memstats_alloc_bytes_total 2.5694e+06\n" +
-                "# HELP go_memstats_buck_hash_sys_bytes Number of bytes used by the profiling bucket hash table.\n" +
-                "# TYPE go_memstats_buck_hash_sys_bytes gauge\n" +
-                "go_memstats_buck_hash_sys_bytes 7037\n" +
-                "# HELP go_memstats_frees_total Total number of frees.\n" +
-                "# TYPE go_memstats_frees_total counter\n" +
-                "go_memstats_frees_total 301\n" +
-                "# HELP go_memstats_last_gc_time_seconds Number of seconds since 1970 of last garbage collection.\n" +
-                "# TYPE go_memstats_last_gc_time_seconds gauge\n" +
-                "go_memstats_last_gc_time_seconds 0\n" +
-                "# HELP go_memstats_mcache_inuse_bytes Number of bytes in use by mcache structures.\n" +
-                "# TYPE go_memstats_mcache_inuse_bytes gauge\n" +
-                "go_memstats_mcache_inuse_bytes 9344\n" +
-                "# HELP go_memstats_mcache_sys_bytes Number of bytes used for mcache structures obtained from system.\n" +
-                "# TYPE go_memstats_mcache_sys_bytes gauge\n" +
-                "go_memstats_mcache_sys_bytes 16384\n" +
-                "# HELP go_memstats_mspan_inuse_bytes Number of bytes in use by mspan structures.\n" +
-                "# TYPE go_memstats_mspan_inuse_bytes gauge\n" +
-                "go_memstats_mspan_inuse_bytes 46512\n" +
-                "# HELP go_memstats_mspan_sys_bytes Number of bytes used for mspan structures obtained from system.\n" +
-                "# TYPE go_memstats_mspan_sys_bytes gauge\n" +
-                "go_memstats_mspan_sys_bytes 49152\n" +
-                "# HELP go_memstats_next_gc_bytes Number of heap bytes when next garbage collection will take place.\n" +
-                "# TYPE go_memstats_next_gc_bytes gauge\n" +
-                "go_memstats_next_gc_bytes 4.473924e+06\n" +
-                "# HELP go_memstats_other_sys_bytes Number of bytes used for other system allocations.\n" +
-                "# TYPE go_memstats_other_sys_bytes gauge\n" +
-                "go_memstats_other_sys_bytes 1.163635e+06\n" +
-                "# HELP go_memstats_stack_inuse_bytes Number of bytes in use by the stack allocator.\n" +
-                "# TYPE go_memstats_stack_inuse_bytes gauge\n" +
-                "go_memstats_stack_inuse_bytes 163840\n" +
-                "# HELP go_memstats_stack_sys_bytes Number of bytes obtained from system for stack allocator.\n" +
-                "# TYPE go_memstats_stack_sys_bytes gauge\n" +
-                "go_memstats_stack_sys_bytes 163840\n" +
-                "# HELP go_memstats_sys_bytes Number of bytes obtained from system.\n" +
-                "# TYPE go_memstats_sys_bytes gauge\n" +
-                "go_memstats_sys_bytes 6.967504e+06\n" +
-                "# HELP go_sched_goroutines_goroutines Count of live goroutines.\n" +
-                "# TYPE go_sched_goroutines_goroutines gauge\n" +
-                "go_sched_goroutines_goroutines 6\n" +
-                "# HELP go_sched_latencies_seconds Distribution of the time goroutines have spent in the scheduler in a runnable state before actually running.\n" +
-                "# TYPE go_sched_latencies_seconds histogram\n" +
-                "go_sched_latencies_seconds_bucket{le=\"-5e-324\"} 0\n" +
-                "go_sched_latencies_seconds_bucket{le=\"9.999999999999999e-10\"} 34\n" +
-                "go_sched_latencies_seconds_bucket{le=\"9.999999999999999e-09\"} 34\n" +
-                "go_sched_latencies_seconds_bucket{le=\"9.999999999999998e-08\"} 34\n" +
-                "go_sched_latencies_seconds_bucket{le=\"1.0239999999999999e-06\"} 34\n" +
-                "go_sched_latencies_seconds_bucket{le=\"1.0239999999999999e-05\"} 34\n" +
-                "go_sched_latencies_seconds_bucket{le=\"0.00010239999999999998\"} 34\n" +
-                "go_sched_latencies_seconds_bucket{le=\"0.0010485759999999998\"} 34\n" +
-                "go_sched_latencies_seconds_bucket{le=\"0.010485759999999998\"} 34\n" +
-                "go_sched_latencies_seconds_bucket{le=\"0.10485759999999998\"} 34\n" +
-                "go_sched_latencies_seconds_bucket{le=\"+Inf\"} 34\n" +
-                "go_sched_latencies_seconds_sum NaN\n" +
-                "go_sched_latencies_seconds_count 34\n" +
-                "# HELP go_threads Number of OS threads created.\n" +
-                "# TYPE go_threads gauge\n" +
-                "go_threads 7\n" +
-                "# HELP mysql_exporter_collector_duration_seconds Collector time duration.\n" +
-                "# TYPE mysql_exporter_collector_duration_seconds gauge\n" +
-                "mysql_exporter_collector_duration_seconds{collector=\"collect.global_status\"} 0.0573716\n" +
-                "mysql_exporter_collector_duration_seconds{collector=\"collect.global_variables\"} 0.0401132\n" +
-                "mysql_exporter_collector_duration_seconds{collector=\"collect.info_schema.innodb_cmp\"} 0.0605768\n" +
-                "mysql_exporter_collector_duration_seconds{collector=\"collect.info_schema.innodb_cmpmem\"} 0.0607512\n" +
-                "mysql_exporter_collector_duration_seconds{collector=\"collect.info_schema.query_response_time\"} 0.0010332\n" +
-                "mysql_exporter_collector_duration_seconds{collector=\"collect.slave_status\"} 0.0667714\n" +
-                "mysql_exporter_collector_duration_seconds{collector=\"connection\"} 0.0160176\n" +
-                "# HELP mysql_exporter_last_scrape_error Whether the last scrape of metrics from MySQL resulted in an error (1 for error, 0 for success).\n" +
-                "# TYPE mysql_exporter_last_scrape_error gauge\n" +
-                "mysql_exporter_last_scrape_error 0\n" +
-                "# HELP mysql_exporter_scrapes_total Total number of times MySQL was scraped for metrics.\n" +
-                "# TYPE mysql_exporter_scrapes_total counter\n" +
-                "mysql_exporter_scrapes_total 1\n" +
-                "# HELP mysql_global_status_aborted_clients Generic metric from SHOW GLOBAL STATUS.\n" +
-                "# TYPE mysql_global_status_aborted_clients untyped\n" +
-                "mysql_global_status_aborted_clients 0\n" +
-                "# HELP mysql_global_status_aborted_connects Generic metric from SHOW GLOBAL STATUS.\n" +
-                "# TYPE mysql_global_status_aborted_connects untyped\n" +
-                "mysql_global_status_aborted_connects 0\n" +
-                "# HELP mysql_global_status_acl_cache_items_count Generic metric from SHOW GLOBAL STATUS.\n" +
-                "# TYPE mysql_global_status_acl_cache_items_count untyped\n" +
-                "mysql_global_status_acl_cache_items_count 0\n" +
-                "# HELP mysql_global_status_binlog_cache_disk_use Generic metric from SHOW GLOBAL STATUS.\n" +
-                "# TYPE mysql_global_status_binlog_cache_disk_use untyped\n" +
-                "mysql_global_status_binlog_cache_disk_use 0\n" +
-                "# HELP mysql_global_status_binlog_cache_use Generic metric from SHOW GLOBAL STATUS.\n" +
-                "# TYPE mysql_global_status_binlog_cache_use untyped\n" +
-                "mysql_global_status_binlog_cache_use 0\n" +
-                "# HELP mysql_global_status_binlog_stmt_cache_disk_use Generic metric from SHOW GLOBAL STATUS.\n" +
-                "# TYPE mysql_global_status_binlog_stmt_cache_disk_use untyped\n" +
-                "mysql_global_status_binlog_stmt_cache_disk_use 0\n" +
-                "# HELP mysql_global_status_binlog_stmt_cache_use Generic metric from SHOW GLOBAL STATUS.\n" +
-                "# TYPE mysql_global_status_binlog_stmt_cache_use untyped\n" +
-                "mysql_global_status_binlog_stmt_cache_use 0\n" +
-                "# HELP mysql_global_status_buffer_pool_dirty_pages Innodb buffer pool dirty pages.\n" +
-                "# TYPE mysql_global_status_buffer_pool_dirty_pages gauge\n" +
-                "mysql_global_status_buffer_pool_dirty_pages 0\n" +
-                "# HELP mysql_global_status_buffer_pool_page_changes_total Innodb buffer pool page state changes.\n" +
-                "# TYPE mysql_global_status_buffer_pool_page_changes_total counter\n" +
-                "mysql_global_status_buffer_pool_page_changes_total{operation=\"flushed\"} 163\n" +
-                "# HELP mysql_global_status_buffer_pool_pages Innodb buffer pool pages by state.\n" +
-                "# TYPE mysql_global_status_buffer_pool_pages gauge\n" +
-                "mysql_global_status_buffer_pool_pages{state=\"data\"} 1135\n" +
-                "mysql_global_status_buffer_pool_pages{state=\"free\"} 7053\n" +
-                "mysql_global_status_buffer_pool_pages{state=\"misc\"} 4\n" +
-                "# HELP mysql_global_status_bytes_received Generic metric from SHOW GLOBAL STATUS.\n" +
-                "# TYPE mysql_global_status_bytes_received untyped\n" +
-                "mysql_global_status_bytes_received 262\n" +
-                "# HELP mysql_global_status_bytes_sent Generic metric from SHOW GLOBAL STATUS.\n" +
-                "# TYPE mysql_global_status_bytes_sent untyped\n" +
-                "mysql_global_status_bytes_sent 21209\n" +
-                "# HELP mysql_global_status_commands_total Total number of executed MySQL commands.\n" +
-                "# TYPE mysql_global_status_commands_total counter\n" +
-                "mysql_global_status_commands_total{command=\"admin_commands\"} 1\n" +
-                "mysql_global_status_commands_total{command=\"alter_db\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"alter_event\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"alter_function\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"alter_instance\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"alter_procedure\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"alter_resource_group\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"alter_server\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"alter_table\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"alter_tablespace\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"alter_user\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"alter_user_default_role\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"analyze\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"assign_to_keycache\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"begin\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"binlog\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"call_procedure\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"change_db\"} 1\n" +
-                "mysql_global_status_commands_total{command=\"change_master\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"change_repl_filter\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"change_replication_source\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"check\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"checksum\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"clone\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"commit\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"create_db\"} 1\n" +
-                "mysql_global_status_commands_total{command=\"drop_db\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"drop_event\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"drop_function\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"drop_index\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"drop_procedure\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"drop_resource_group\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"drop_role\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"drop_server\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"drop_spatial_reference_system\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"drop_table\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"drop_trigger\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"drop_user\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"drop_view\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"empty_query\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"execute_sql\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"explain_other\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"optimize\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"preload_keys\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"prepare_sql\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"purge\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"purge_before_date\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"release_savepoint\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"rename_table\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"rename_user\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"repair\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"replace\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"replace_select\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"replica_start\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"slave_start\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"slave_stop\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"stmt_close\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"stmt_execute\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"stmt_fetch\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"stmt_prepare\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"stmt_reprepare\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"stmt_reset\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"stmt_send_long_data\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"truncate\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"uninstall_component\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"uninstall_plugin\"} 0\n" +
-                "mysql_global_status_commands_total{command=\"xa_start\"} 0\n" +
-                "# HELP mysql_global_status_error_log_latest_write Generic metric from SHOW GLOBAL STATUS.\n" +
-                "# TYPE mysql_global_status_error_log_latest_write untyped\n" +
-                "mysql_global_status_error_log_latest_write 1.667889270142246e+15\n" +
-                "# HELP mysql_global_status_flush_commands Generic metric from SHOW GLOBAL STATUS.\n" +
-                "# TYPE mysql_global_status_flush_commands untyped\n" +
-                "mysql_global_status_flush_commands 3\n" +
-                "# HELP mysql_global_status_handlers_total Total number of executed MySQL handlers.\n" +
-                "# TYPE mysql_global_status_handlers_total counter\n" +
-                "mysql_global_status_handlers_total{handler=\"commit\"} 597\n" +
-                "mysql_global_status_handlers_total{handler=\"delete\"} 0\n" +
-                "mysql_global_status_handlers_total{handler=\"discover\"} 0\n" +
-                "mysql_global_status_handlers_total{handler=\"external_lock\"} 6135\n" +
-                "mysql_global_status_handlers_total{handler=\"mrr_init\"} 0\n" +
-                "mysql_global_status_handlers_total{handler=\"prepare\"} 0\n" +
-                "mysql_global_status_handlers_total{handler=\"read_first\"} 43\n" +
-                "mysql_global_status_handlers_total{handler=\"read_key\"} 1706\n" +
-                "# HELP mysql_global_status_innodb_dblwr_pages_written Generic metric from SHOW GLOBAL STATUS.\n" +
-                "# TYPE mysql_global_status_innodb_dblwr_pages_written untyped\n" +
-                "mysql_global_status_innodb_dblwr_pages_written 22\n" +
-                "# HELP mysql_global_status_innodb_os_log_fsyncs Generic metric from SHOW GLOBAL STATUS.\n" +
-                "# TYPE mysql_global_status_innodb_os_log_fsyncs untyped\n" +
-                "mysql_global_status_innodb_os_log_fsyncs 8\n" +
-                "# HELP mysql_global_status_innodb_os_log_pending_fsyncs Generic metric from SHOW GLOBAL STATUS.\n" +
-                "# TYPE mysql_global_status_innodb_os_log_pending_fsyncs untyped\n" +
-                "mysql_global_status_innodb_os_log_pending_fsyncs 0\n" +
-                "# HELP mysql_global_status_innodb_os_log_pending_writes Generic metric from SHOW GLOBAL STATUS.\n" +
-                "# TYPE mysql_global_status_innodb_os_log_pending_writes untyped\n" +
-                "mysql_global_status_innodb_os_log_pending_writes 0\n" +
-                "# HELP mysql_global_status_innodb_os_log_written Generic metric from SHOW GLOBAL STATUS.\n" +
-                "# TYPE mysql_global_status_innodb_os_log_written untyped\n" +
-                "mysql_global_status_innodb_os_log_written 29184\n" +
-                "# HELP mysql_global_status_innodb_page_size Generic metric from SHOW GLOBAL STATUS.\n" +
-                "# TYPE mysql_global_status_innodb_page_size untyped\n" +
-                "mysql_global_status_innodb_page_size 16384\n" +
-                "# HELP mysql_info_schema_innodb_cmp_uncompress_time_seconds_total Total time in seconds spent in uncompressing B-tree pages.\n" +
-                "# TYPE mysql_info_schema_innodb_cmp_uncompress_time_seconds_total counter\n" +
-                "mysql_info_schema_innodb_cmp_uncompress_time_seconds_total{page_size=\"1024\"} 0\n" +
-                "mysql_info_schema_innodb_cmp_uncompress_time_seconds_total{page_size=\"16384\"} 0\n" +
-                "mysql_info_schema_innodb_cmp_uncompress_time_seconds_total{page_size=\"2048\"} 0\n" +
-                "mysql_info_schema_innodb_cmp_uncompress_time_seconds_total{page_size=\"4096\"} 0\n" +
-                "mysql_info_schema_innodb_cmp_uncompress_time_seconds_total{page_size=\"8192\"} 0\n" +
-                "# HELP mysql_transaction_isolation MySQL transaction isolation.\n" +
-                "# TYPE mysql_transaction_isolation gauge\n" +
-                "mysql_transaction_isolation{level=\"REPEATABLE-READ\"} 1\n" +
-                "# HELP mysql_up Whether the MySQL server is up.\n" +
-                "# TYPE mysql_up gauge\n" +
-                "mysql_up 1\n" +
-                "# HELP mysql_version_info MySQL version and distribution.\n" +
-                "# TYPE mysql_version_info gauge\n" +
-                "mysql_version_info{innodb_version=\"8.0.25\",version=\"8.0.25\",version_comment=\"MySQL Community Server - GPL\"} 1\n" +
-                "# HELP mysqld_exporter_build_info A metric with a constant '1' value labeled by version, revision, branch, and goversion from which mysqld_exporter was built.\n" +
-                "# TYPE mysqld_exporter_build_info gauge\n" +
-                "mysqld_exporter_build_info{branch=\"HEAD\",goversion=\"go1.17.8\",revision=\"ca1b9af82a471c849c529eb8aadb1aac73e7b68c\",version=\"0.14.0\"} 1\n" +
-                "# HELP process_cpu_seconds_total Total user and system CPU time spent in seconds.\n" +
-                "# TYPE process_cpu_seconds_total counter\n" +
-                "process_cpu_seconds_total 0.015625\n" +
-                "# HELP process_max_fds Maximum number of open file descriptors.\n" +
-                "# TYPE process_max_fds gauge\n" +
-                "process_max_fds 1.6777216e+07\n" +
-                "# HELP process_open_fds Number of open file descriptors.\n" +
-                "# TYPE process_open_fds gauge\n" +
-                "process_open_fds 102\n" +
-                "# HELP process_resident_memory_bytes Resident memory size in bytes.\n" +
-                "# TYPE process_resident_memory_bytes gauge\n" +
-                "process_resident_memory_bytes 1.0862592e+07\n" +
-                "# HELP process_start_time_seconds Start time of the process since unix epoch in seconds.\n" +
-                "# TYPE process_start_time_seconds gauge\n" +
-                "process_start_time_seconds 1.667908248e+09\n" +
-                "# HELP process_virtual_memory_bytes Virtual memory size in bytes.\n" +
-                "# TYPE process_virtual_memory_bytes gauge\n" +
-                "process_virtual_memory_bytes 1.6044032e+07\n" +
-                "# HELP promhttp_metric_handler_requests_in_flight Current number of scrapes being served.\n" +
-                "# TYPE promhttp_metric_handler_requests_in_flight gauge\n" +
-                "promhttp_metric_handler_requests_in_flight 1\n" +
-                "# HELP promhttp_metric_handler_requests_total Total number of scrapes by HTTP status code.\n" +
-                "# TYPE promhttp_metric_handler_requests_total counter\n" +
-                "promhttp_metric_handler_requests_total{code=\"200\"} 0\n" +
-                "promhttp_metric_handler_requests_total{code=\"500\"} 0\n" +
-                "promhttp_metric_handler_requests_total{code=\"503\"} 0";
-        ExporterParser parser = new ExporterParser();
-        Map<String, MetricFamily> metricFamilyMap = parser.textToMetric(resp);
-        for (MetricFamily metricFamily : metricFamilyMap.values()) {
-            System.out.println(metricFamily);
-        }
-    }
 }
diff --git a/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/MetricFamily.java b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/MetricFamily.java
index f565a499a66..88107a381f7 100644
--- a/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/MetricFamily.java
+++ b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/MetricFamily.java
@@ -37,7 +37,7 @@ public class MetricFamily {
     private List<Metric> metricList;
 
     @Data
-    static class Metric {
+    public static class Metric {
 
         /**
          * 标签数据, 主要对应{}内容
@@ -58,7 +58,7 @@ static class Metric {
     }
 
     @Data
-    static class Label {
+    public static class Label {
 
         private String name;
 
@@ -66,7 +66,7 @@ static class Label {
     }
 
     @Data
-    static class Counter {
+    public static class Counter {
 
         private double value;
 
@@ -74,19 +74,19 @@ static class Counter {
     }
 
     @Data
-    static class Gauge {
+    public static class Gauge {
 
         private double value;
     }
 
     @Data
-    static class Untyped {
+    public static class Untyped {
 
         private double value;
     }
 
     @Data
-    static class Summary {
+    public static class Summary {
 
         private long count;
 
@@ -96,7 +96,7 @@ static class Summary {
     }
 
     @Data
-    static class Quantile {
+    public static class Quantile {
         // 对应 prometheus 的 quantile 字段
         private double xLabel;
 
@@ -104,7 +104,7 @@ static class Quantile {
     }
 
     @Data
-    static class Histogram {
+    public static class Histogram {
 
         private long count;
 
@@ -114,7 +114,7 @@ static class Histogram {
     }
 
     @Data
-    static class Bucket {
+    public static class Bucket {
 
         private long cumulativeCount;
 
diff --git a/collector/src/main/java/com/usthe/collector/dispatch/DispatchConstants.java b/collector/src/main/java/com/usthe/collector/dispatch/DispatchConstants.java
index 857d29afdd6..c4901a55d64 100644
--- a/collector/src/main/java/com/usthe/collector/dispatch/DispatchConstants.java
+++ b/collector/src/main/java/com/usthe/collector/dispatch/DispatchConstants.java
@@ -119,6 +119,11 @@ public interface DispatchConstants {
      * 解析方式 prometheus规则
      */
     String PARSE_PROMETHEUS = "prometheus";
+    /**
+     * Parsing method prometheus exporter data
+     * 解析方式 exporter接口获取的数据
+     */
+    String PARSE_PROMETHEUS_EXPORTER = "prometheus_exporter";
     /**
      * prometheus accept header
      */
diff --git a/manager/src/main/resources/application.yml b/manager/src/main/resources/application.yml
index 174b8d6d4be..2edbe581bf1 100644
--- a/manager/src/main/resources/application.yml
+++ b/manager/src/main/resources/application.yml
@@ -73,23 +73,23 @@ spring:
 
   # Not Require, Please config if you need email notify
   # 非必填：不使用邮箱作为警告通知可以去掉spring.mail配置
-  mail:
-    # Attention: this is mail server address.
-    # 请注意此为邮件服务器地址：qq邮箱为 smtp.qq.com qq企业邮箱为 smtp.exmail.qq.com
-    host: smtp.exmail.qq.com
-    username: example@tancloud.cn
-    # Attention: this is not email account password, this requires an email authorization code
-    # 请注意此非邮箱账户密码 此需填写邮箱授权码
-    password: example
-    port: 465
-    default-encoding: UTF-8
-    properties:
-      mail:
-        smtp:
-          socketFactoryClass: javax.net.ssl.SSLSocketFactory
-          ssl:
-            enable: true
-        debug: false
+#  mail:
+#    # Attention: this is mail server address.
+#    # 请注意此为邮件服务器地址：qq邮箱为 smtp.qq.com qq企业邮箱为 smtp.exmail.qq.com
+#    host: smtp.exmail.qq.com
+#    username: example@tancloud.cn
+#    # Attention: this is not email account password, this requires an email authorization code
+#    # 请注意此非邮箱账户密码 此需填写邮箱授权码
+#    password: example
+#    port: 465
+#    default-encoding: UTF-8
+#    properties:
+#      mail:
+#        smtp:
+#          socketFactoryClass: javax.net.ssl.SSLSocketFactory
+#          ssl:
+#            enable: true
+#        debug: false
 
 warehouse:
   store:
diff --git a/manager/src/main/resources/define/app/app-iotdb.yml b/manager/src/main/resources/define/app/app-iotdb.yml
new file mode 100644
index 00000000000..c5e3c60f2c8
--- /dev/null
+++ b/manager/src/main/resources/define/app/app-iotdb.yml
@@ -0,0 +1,58 @@
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+category: db
+app: iotdb
+name:
+  zh-CN: IoTDB
+  en-US: IoTDB
+# 参数映射map. type是参数类型: 0-number数字, 1-string明文字符串, 2-secret加密字符串
+# 强制固定必须参数 - host
+configmap:
+  - key: host
+    type: 1
+  - key: port
+    type: 0
+  - key: timeout
+    type: 0
+# 指标组列表
+metrics:
+  # 第一个监控指标组 cpu
+  # 注意：内置监控指标有 (responseTime - 响应时间)
+  - name: jvm_memory_committed_bytes
+    # 指标组调度优先级(0-127)越小优先级越高,优先级低的指标组会等优先级高的指标组采集完成后才会被调度,相同优先级的指标组会并行调度采集
+    # 优先级为0的指标组为可用性指标组,即它会被首先调度,采集成功才会继续调度其它指标组,采集失败则中断调度
+    priority: 0
+    fields:
+      # 指标信息 包括 field名称   type字段类型:0-number数字,1-string字符串   instance是否为实例主键   unit:指标单位
+      - field: area
+        type: 1
+      - field: id
+        type: 1
+      - field: value
+        type: 0
+    # 监控采集使用协议 eg: sql, ssh, http, telnet, wmi, snmp, sdk
+    protocol: http
+    # 当protocol为http协议时具体的采集配置
+    http:
+      # 主机host: ipv4 ipv6 域名
+      host: ^_^host^_^
+      # 端口
+      port: ^_^port^_^
+      # url请求接口路径
+      url: '/metrics'
+      timeout: ^_^timeout^_^
+      method: GET
+      parseType: prometheus_exporter
\ No newline at end of file
diff --git a/manager/src/main/resources/define/param/param-iotdb.yml b/manager/src/main/resources/define/param/param-iotdb.yml
new file mode 100644
index 00000000000..4df17137f6e
--- /dev/null
+++ b/manager/src/main/resources/define/param/param-iotdb.yml
@@ -0,0 +1,38 @@
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+app: iotdb
+param:
+  - field: host
+    name:
+      zh-CN: 主机Host
+      en-US: Host
+    type: host
+    required: true
+  - field: port
+    name:
+      zh-CN: 端口
+      en-US: Port
+    type: number
+    range: '[0,65535]'
+    required: true
+  - field: timeout
+    name:
+      zh-CN: 查询超时时间
+      en-US: Query Timeout
+    type: number
+    required: false
+    hide: true
+    defaultValue: 6000
\ No newline at end of file

From 72c0821a7249b897304efeb5ef158e6792f9bce7 Mon Sep 17 00:00:00 2001
From: tomsun28 <tomsun28@outlook.com>
Date: Sun, 4 Dec 2022 11:11:10 +0800
Subject: [PATCH 10/22] [manager] iotdb monitor add cluster_node_status metric

---
 .../main/resources/define/app/app-iotdb.yml   | 36 +++++++++++++++++--
 .../resources/define/param/param-iotdb.yml    |  1 +
 2 files changed, 34 insertions(+), 3 deletions(-)

diff --git a/manager/src/main/resources/define/app/app-iotdb.yml b/manager/src/main/resources/define/app/app-iotdb.yml
index c5e3c60f2c8..c63685e1d58 100644
--- a/manager/src/main/resources/define/app/app-iotdb.yml
+++ b/manager/src/main/resources/define/app/app-iotdb.yml
@@ -29,20 +29,50 @@ configmap:
     type: 0
 # 指标组列表
 metrics:
-  # 第一个监控指标组 cpu
-  # 注意：内置监控指标有 (responseTime - 响应时间)
+  - name: cluster_node_status
+    priority: 0
+    fields:
+      - field: name
+        type: 1
+        instance: true
+      - field: status
+        type: 0
+    aliasFields:
+      - name
+      - value
+    calculates:
+      - name=name
+      - status=value
+    # 监控采集使用协议 eg: sql, ssh, http, telnet, wmi, snmp, sdk
+    protocol: http
+    # 当protocol为http协议时具体的采集配置
+    http:
+      # 主机host: ipv4 ipv6 域名
+      host: ^_^host^_^
+      # 端口
+      port: ^_^port^_^
+      # url请求接口路径
+      url: '/metrics'
+      timeout: ^_^timeout^_^
+      method: GET
+      parseType: prometheus_exporter
+
   - name: jvm_memory_committed_bytes
     # 指标组调度优先级(0-127)越小优先级越高,优先级低的指标组会等优先级高的指标组采集完成后才会被调度,相同优先级的指标组会并行调度采集
     # 优先级为0的指标组为可用性指标组,即它会被首先调度,采集成功才会继续调度其它指标组,采集失败则中断调度
-    priority: 0
+    priority: 1
     fields:
       # 指标信息 包括 field名称   type字段类型:0-number数字,1-string字符串   instance是否为实例主键   unit:指标单位
       - field: area
         type: 1
       - field: id
         type: 1
+        instance: true
       - field: value
         type: 0
+        unit: MB
+    units:
+      - value=B->MB
     # 监控采集使用协议 eg: sql, ssh, http, telnet, wmi, snmp, sdk
     protocol: http
     # 当protocol为http协议时具体的采集配置
diff --git a/manager/src/main/resources/define/param/param-iotdb.yml b/manager/src/main/resources/define/param/param-iotdb.yml
index 4df17137f6e..4f82ed1cb55 100644
--- a/manager/src/main/resources/define/param/param-iotdb.yml
+++ b/manager/src/main/resources/define/param/param-iotdb.yml
@@ -27,6 +27,7 @@ param:
       en-US: Port
     type: number
     range: '[0,65535]'
+    defaultValue: 9091
     required: true
   - field: timeout
     name:

From 8d2abc9f9a1383d847325654fc7f68267d1e91c2 Mon Sep 17 00:00:00 2001
From: tomsun28 <tomsun28@outlook.com>
Date: Sun, 4 Dec 2022 11:52:29 +0800
Subject: [PATCH 11/22] [manager] fix actuator mail health check error when
 startup

---
 manager/src/main/resources/application.yml | 36 +++++++++++-----------
 1 file changed, 18 insertions(+), 18 deletions(-)

diff --git a/manager/src/main/resources/application.yml b/manager/src/main/resources/application.yml
index 2edbe581bf1..24016b86997 100644
--- a/manager/src/main/resources/application.yml
+++ b/manager/src/main/resources/application.yml
@@ -40,7 +40,7 @@ management:
     web:
       exposure:
         include: '*'
-    enabled-by-default: on
+    enabled-by-default: off
 
 sureness:
   auths:
@@ -73,23 +73,23 @@ spring:
 
   # Not Require, Please config if you need email notify
   # 非必填：不使用邮箱作为警告通知可以去掉spring.mail配置
-#  mail:
-#    # Attention: this is mail server address.
-#    # 请注意此为邮件服务器地址：qq邮箱为 smtp.qq.com qq企业邮箱为 smtp.exmail.qq.com
-#    host: smtp.exmail.qq.com
-#    username: example@tancloud.cn
-#    # Attention: this is not email account password, this requires an email authorization code
-#    # 请注意此非邮箱账户密码 此需填写邮箱授权码
-#    password: example
-#    port: 465
-#    default-encoding: UTF-8
-#    properties:
-#      mail:
-#        smtp:
-#          socketFactoryClass: javax.net.ssl.SSLSocketFactory
-#          ssl:
-#            enable: true
-#        debug: false
+  mail:
+    # Attention: this is mail server address.
+    # 请注意此为邮件服务器地址：qq邮箱为 smtp.qq.com qq企业邮箱为 smtp.exmail.qq.com
+    host: smtp.exmail.qq.com
+    username: example@tancloud.cn
+    # Attention: this is not email account password, this requires an email authorization code
+    # 请注意此非邮箱账户密码 此需填写邮箱授权码
+    password: example
+    port: 465
+    default-encoding: UTF-8
+    properties:
+      mail:
+        smtp:
+          socketFactoryClass: javax.net.ssl.SSLSocketFactory
+          ssl:
+            enable: true
+        debug: false
 
 warehouse:
   store:

From e1f23afa5239f30f5933a4ac65b8181faf2ee993 Mon Sep 17 00:00:00 2001
From: tomsun28 <tomsun28@outlook.com>
Date: Sun, 4 Dec 2022 12:01:44 +0800
Subject: [PATCH 12/22] [manager] use prometheus instead of prometheus_exporter

---
 .../usthe/collector/collect/http/HttpCollectImpl.java    | 2 +-
 .../com/usthe/collector/dispatch/DispatchConstants.java  | 9 ++-------
 manager/src/main/resources/define/app/app-iotdb.yml      | 4 ++--
 3 files changed, 5 insertions(+), 10 deletions(-)

diff --git a/collector/src/main/java/com/usthe/collector/collect/http/HttpCollectImpl.java b/collector/src/main/java/com/usthe/collector/collect/http/HttpCollectImpl.java
index efd8393c6d3..04e877de7f3 100644
--- a/collector/src/main/java/com/usthe/collector/collect/http/HttpCollectImpl.java
+++ b/collector/src/main/java/com/usthe/collector/collect/http/HttpCollectImpl.java
@@ -131,7 +131,7 @@ public void collect(CollectRep.MetricsData.Builder builder,
                         parseResponseByJsonPath(resp, metrics.getAliasFields(), metrics.getHttp(), builder, responseTime);
                     } else if (DispatchConstants.PARSE_PROM_QL.equalsIgnoreCase(parseType)) {
                         parseResponseByPromQL(resp, metrics.getAliasFields(), metrics.getHttp(), builder);
-                    } else if (DispatchConstants.PARSE_PROMETHEUS_EXPORTER.equals(parseType)) {
+                    } else if (DispatchConstants.PARSE_PROMETHEUS.equals(parseType)) {
                         parseResponseByPrometheusExporter(resp, metrics.getAliasFields(), builder);
                     } else if (DispatchConstants.PARSE_XML_PATH.equals(parseType)) {
                         parseResponseByXmlPath(resp, metrics.getAliasFields(), metrics.getHttp(), builder);
diff --git a/collector/src/main/java/com/usthe/collector/dispatch/DispatchConstants.java b/collector/src/main/java/com/usthe/collector/dispatch/DispatchConstants.java
index c4901a55d64..541dffe80a6 100644
--- a/collector/src/main/java/com/usthe/collector/dispatch/DispatchConstants.java
+++ b/collector/src/main/java/com/usthe/collector/dispatch/DispatchConstants.java
@@ -114,16 +114,11 @@ public interface DispatchConstants {
      * 解析方式 网站地图全站可用性监控规则
      */
     String PARSE_SITE_MAP = "sitemap";
-    /**
-     * Parsing method prometheus rules
-     * 解析方式 prometheus规则
-     */
-    String PARSE_PROMETHEUS = "prometheus";
     /**
      * Parsing method prometheus exporter data
-     * 解析方式 exporter接口获取的数据
+     * 解析方式 prometheus exporter接口获取的数据
      */
-    String PARSE_PROMETHEUS_EXPORTER = "prometheus_exporter";
+    String PARSE_PROMETHEUS = "prometheus";
     /**
      * prometheus accept header
      */
diff --git a/manager/src/main/resources/define/app/app-iotdb.yml b/manager/src/main/resources/define/app/app-iotdb.yml
index c63685e1d58..f137c793766 100644
--- a/manager/src/main/resources/define/app/app-iotdb.yml
+++ b/manager/src/main/resources/define/app/app-iotdb.yml
@@ -55,7 +55,7 @@ metrics:
       url: '/metrics'
       timeout: ^_^timeout^_^
       method: GET
-      parseType: prometheus_exporter
+      parseType: prometheus
 
   - name: jvm_memory_committed_bytes
     # 指标组调度优先级(0-127)越小优先级越高,优先级低的指标组会等优先级高的指标组采集完成后才会被调度,相同优先级的指标组会并行调度采集
@@ -85,4 +85,4 @@ metrics:
       url: '/metrics'
       timeout: ^_^timeout^_^
       method: GET
-      parseType: prometheus_exporter
\ No newline at end of file
+      parseType: prometheus
\ No newline at end of file

From 760c56284a4431c9ef9167a60516d24386283d56 Mon Sep 17 00:00:00 2001
From: tomsun28 <tomsun28@outlook.com>
Date: Sun, 4 Dec 2022 14:41:39 +0800
Subject: [PATCH 13/22] [manager] add iotdb monitoring metrics

---
 .../main/resources/define/app/app-iotdb.yml   | 175 ++++++++++++++++++
 1 file changed, 175 insertions(+)

diff --git a/manager/src/main/resources/define/app/app-iotdb.yml b/manager/src/main/resources/define/app/app-iotdb.yml
index f137c793766..fa58d407ac4 100644
--- a/manager/src/main/resources/define/app/app-iotdb.yml
+++ b/manager/src/main/resources/define/app/app-iotdb.yml
@@ -76,6 +76,181 @@ metrics:
     # 监控采集使用协议 eg: sql, ssh, http, telnet, wmi, snmp, sdk
     protocol: http
     # 当protocol为http协议时具体的采集配置
+    http:
+      # 主机host: ipv4 ipv6 域名
+      host: ^_^host^_^
+      # 端口
+      port: ^_^port^_^
+      # url请求接口路径
+      url: '/metrics'
+      timeout: ^_^timeout^_^
+      method: GET
+      parseType: prometheus
+
+  - name: jvm_memory_used_bytes
+    # 指标组调度优先级(0-127)越小优先级越高,优先级低的指标组会等优先级高的指标组采集完成后才会被调度,相同优先级的指标组会并行调度采集
+    # 优先级为0的指标组为可用性指标组,即它会被首先调度,采集成功才会继续调度其它指标组,采集失败则中断调度
+    priority: 1
+    fields:
+      # 指标信息 包括 field名称   type字段类型:0-number数字,1-string字符串   instance是否为实例主键   unit:指标单位
+      - field: area
+        type: 1
+      - field: id
+        type: 1
+        instance: true
+      - field: value
+        type: 0
+        unit: MB
+    units:
+      - value=B->MB
+    # 监控采集使用协议 eg: sql, ssh, http, telnet, wmi, snmp, sdk
+    protocol: http
+    # 当protocol为http协议时具体的采集配置
+    http:
+      # 主机host: ipv4 ipv6 域名
+      host: ^_^host^_^
+      # 端口
+      port: ^_^port^_^
+      # url请求接口路径
+      url: '/metrics'
+      timeout: ^_^timeout^_^
+      method: GET
+      parseType: prometheus
+
+  - name: jvm_threads_states_threads
+    priority: 1
+    fields:
+      # 指标信息 包括 field名称   type字段类型:0-number数字,1-string字符串   instance是否为实例主键   unit:指标单位
+      - field: state
+        type: 1
+        instance: true
+      - field: count
+        type: 0
+    aliasFields:
+      - state
+      - value
+    calculates:
+      - count=value
+    # 监控采集使用协议 eg: sql, ssh, http, telnet, wmi, snmp, sdk
+    protocol: http
+    # 当protocol为http协议时具体的采集配置
+    http:
+      # 主机host: ipv4 ipv6 域名
+      host: ^_^host^_^
+      # 端口
+      port: ^_^port^_^
+      # url请求接口路径
+      url: '/metrics'
+      timeout: ^_^timeout^_^
+      method: GET
+      parseType: prometheus
+
+  - name: quantity
+    priority: 1
+    fields:
+      # 指标信息 包括 field名称   type字段类型:0-number数字,1-string字符串   instance是否为实例主键   unit:指标单位
+      - field: id
+        type: 1
+        instance: true
+      - field: name
+        type: 1
+      - field: type
+        type: 1
+      - field: value
+        type: 0
+    aliasFields:
+      - name
+      - type
+      - value
+    calculates:
+      - id=name+"-"+type
+    # 监控采集使用协议 eg: sql, ssh, http, telnet, wmi, snmp, sdk
+    protocol: http
+    # 当protocol为http协议时具体的采集配置
+    http:
+      # 主机host: ipv4 ipv6 域名
+      host: ^_^host^_^
+      # 端口
+      port: ^_^port^_^
+      # url请求接口路径
+      url: '/metrics'
+      timeout: ^_^timeout^_^
+      method: GET
+      parseType: prometheus
+
+  - name: cache_hit
+    priority: 1
+    fields:
+      # 指标信息 包括 field名称   type字段类型:0-number数字,1-string字符串   instance是否为实例主键   unit:指标单位
+      - field: name
+        type: 1
+        instance: true
+      - field: value
+        type: 0
+    # 监控采集使用协议 eg: sql, ssh, http, telnet, wmi, snmp, sdk
+    protocol: http
+    # 当protocol为http协议时具体的采集配置
+    http:
+      # 主机host: ipv4 ipv6 域名
+      host: ^_^host^_^
+      # 端口
+      port: ^_^port^_^
+      # url请求接口路径
+      url: '/metrics'
+      timeout: ^_^timeout^_^
+      method: GET
+      parseType: prometheus
+
+  - name: queue
+    priority: 1
+    fields:
+      # 指标信息 包括 field名称   type字段类型:0-number数字,1-string字符串   instance是否为实例主键   unit:指标单位
+      - field: id
+        type: 1
+        instance: true
+      - field: name
+        type: 1
+      - field: status
+        type: 1
+      - field: value
+        type: 0
+    aliasFields:
+      - name
+      - status
+      - value
+    calculates:
+      - id=name+"-"+status
+    # 监控采集使用协议 eg: sql, ssh, http, telnet, wmi, snmp, sdk
+    protocol: http
+    # 当protocol为http协议时具体的采集配置
+    http:
+      # 主机host: ipv4 ipv6 域名
+      host: ^_^host^_^
+      # 端口
+      port: ^_^port^_^
+      # url请求接口路径
+      url: '/metrics'
+      timeout: ^_^timeout^_^
+      method: GET
+      parseType: prometheus
+
+  - name: thrift_connections
+    priority: 1
+    fields:
+      # 指标信息 包括 field名称   type字段类型:0-number数字,1-string字符串   instance是否为实例主键   unit:指标单位
+      - field: name
+        type: 1
+        instance: true
+      - field: connection
+        type: 0
+    aliasFields:
+      - name
+      - value
+    calculates:
+      - connection=value
+    # 监控采集使用协议 eg: sql, ssh, http, telnet, wmi, snmp, sdk
+    protocol: http
+    # 当protocol为http协议时具体的采集配置
     http:
       # 主机host: ipv4 ipv6 域名
       host: ^_^host^_^

From 49b463c416dc89e3e6d69f095690f56ee34bdc83 Mon Sep 17 00:00:00 2001
From: tomsun28 <tomsun28@outlook.com>
Date: Sun, 4 Dec 2022 21:57:18 +0800
Subject: [PATCH 14/22] [collector] add metric type - info, update parser

---
 .../collect/http/HttpCollectImpl.java         |  2 +
 .../promethus/exporter/ExporterParser.java    | 39 ++++++++++++---
 .../http/promethus/exporter/MetricFamily.java |  9 ++++
 .../http/promethus/exporter/MetricType.java   |  3 ++
 .../exporter/ExporterParserTest.java          | 47 +++++++++++++++++++
 .../java/com/usthe/common/util/StrBuffer.java |  2 +-
 6 files changed, 95 insertions(+), 7 deletions(-)
 create mode 100644 collector/src/test/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParserTest.java

diff --git a/collector/src/main/java/com/usthe/collector/collect/http/HttpCollectImpl.java b/collector/src/main/java/com/usthe/collector/collect/http/HttpCollectImpl.java
index 04e877de7f3..0a34744161b 100644
--- a/collector/src/main/java/com/usthe/collector/collect/http/HttpCollectImpl.java
+++ b/collector/src/main/java/com/usthe/collector/collect/http/HttpCollectImpl.java
@@ -389,6 +389,8 @@ private void parseResponseByPrometheusExporter(String resp, List<String> aliasFi
                             valueRowBuilder.addColumns(metric.getGauge().getValue() + "");
                         } else if (metric.getUntyped() != null) {
                             valueRowBuilder.addColumns(metric.getUntyped().getValue() + "");
+                        } else if (metric.getInfo() != null) {
+                            valueRowBuilder.addColumns(metric.getInfo().getValue() + "");
                         }
                     } else {
                         valueRowBuilder.addColumns(labelMap.get(aliasField));
diff --git a/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java
index 95698945568..11356158b00 100644
--- a/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java
+++ b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java
@@ -21,6 +21,7 @@
 public class ExporterParser {
     private static final String HELP = "HELP";
     private static final String TYPE = "TYPE";
+    private static final String EOF = "EOF";
 
     private static final String QUANTILE_LABEL = "quantile";
     private static final String BUCKET_LABEL = "le";
@@ -28,6 +29,9 @@ public class ExporterParser {
     private static final String SUM_SUFFIX = "_sum";
     private static final String COUNT_SUFFIX = "_count";
     private static final String BUCKET_SUFFIX = "_bucket";
+    private static final String INFO_SUFFIX = "_info";
+    private static final String TOTAL_SUFFIX = "_total";
+    private static final String CREATED_SUFFIX = "_created";
 
     private String currentQuantile;
     private String currentBucket;
@@ -63,6 +67,9 @@ private void parseComment(Map<String, MetricFamily> metricMap, StrBuffer buffer)
         buffer.skipBlankTabs();
         if (buffer.isEmpty()) return;
         String token = this.readTokenUnitWhitespace(buffer);
+        if (token.equals(EOF)) {
+            return;
+        }
         if (!token.equals(HELP) && !token.equals(TYPE)) {
             log.error("parse comment error {}, start without {} or {}", buffer.toStr(), HELP, TYPE);
             return;
@@ -106,14 +113,18 @@ private void parseMetric(Map<String, MetricFamily> metricMap, StrBuffer buffer)
                 metricFamily = metricMap.get(metricName.substring(0, metricName.length() - SUM_SUFFIX.length()));
             } else if (this.isBucket(metricName)) {
                 metricFamily = metricMap.get(metricName.substring(0, metricName.length() - BUCKET_SUFFIX.length()));
+            } else if (this.isInfo(metricName)) {
+                metricFamily = metricMap.get(metricName.substring(0, metricName.length() - INFO_SUFFIX.length()));
+            } else if (this.isTotal(metricName)) {
+                metricFamily = metricMap.get(metricName.substring(0, metricName.length() - TOTAL_SUFFIX.length()));
+            } else if (this.isCreated(metricName)) {
+                // metricFamily = metricMap.get(metricName.substring(0, metricName.length() - CREATED_SUFFIX.length()));
+                // ignore counter _created value
+                return;
             }
             if (metricFamily == null) {
-                log.error("line {} parse error, no such HELP and TYPE", buffer.toStr());
+                log.error("line {} parse has no such HELP and TYPE", metricName);
                 return;
-            } else if (this.isCount(metricName) || this.isSum(metricName)) {
-                MetricFamily.Label label = new MetricFamily.Label();
-                label.setName(metricName);
-                this.readLabels(metricFamily, metricFamily.getMetricList().get(0), label, buffer);
             }
         }
         List<MetricFamily.Metric> metricList = metricFamily.getMetricList();
@@ -207,6 +218,11 @@ private void readLabelValue(MetricFamily metricFamily, MetricFamily.Metric metri
         buffer.skipBlankTabs();
         if (buffer.isEmpty()) return;
         switch (metricFamily.getMetricType()) {
+            case INFO:
+                MetricFamily.Info info = new MetricFamily.Info();
+                info.setValue(buffer.toDouble());
+                metric.setInfo(info);
+                break;
             case COUNTER:
                 MetricFamily.Counter counter = new MetricFamily.Counter();
                 counter.setValue(buffer.toDouble());
@@ -389,8 +405,19 @@ private boolean isCount(String s) {
         return s != null && s.endsWith(COUNT_SUFFIX);
     }
 
+    private boolean isInfo(String s) {
+        return s != null && s.endsWith(INFO_SUFFIX);
+    }
+
+    private boolean isTotal(String s) {
+        return s != null && s.endsWith(TOTAL_SUFFIX);
+    }
+
+    private boolean isCreated(String s) {
+        return s != null && s.endsWith(CREATED_SUFFIX);
+    }
+
     private boolean isBucket(String s) {
         return s != null && s.endsWith(BUCKET_SUFFIX);
     }
-
 }
diff --git a/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/MetricFamily.java b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/MetricFamily.java
index 88107a381f7..d1ae70c6c8d 100644
--- a/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/MetricFamily.java
+++ b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/MetricFamily.java
@@ -44,6 +44,8 @@ public static class Metric {
          */
         private List<Label> labelPair;
 
+        private Info info;
+
         private Gauge gauge;
 
         private Counter counter;
@@ -65,6 +67,13 @@ public static class Label {
         private String value;
     }
 
+    @Data
+    public static class Info {
+
+        private double value;
+
+    }
+
     @Data
     public static class Counter {
 
diff --git a/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/MetricType.java b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/MetricType.java
index c2c548fe37d..0bdb7fcecdd 100644
--- a/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/MetricType.java
+++ b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/MetricType.java
@@ -1,10 +1,13 @@
 package com.usthe.collector.collect.http.promethus.exporter;
 
 /**
+ * prometheus metrics type
  * @author ceilzcx
  * @since 7/11/2022
  */
 public enum MetricType {
+    // for string metric info
+    INFO("info"),
     // 代表单调递增的计数器, 例: 统计次数
     COUNTER("counter"),
     // 任意上下波动的指标类型, 例: CPU的使用率
diff --git a/collector/src/test/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParserTest.java b/collector/src/test/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParserTest.java
new file mode 100644
index 00000000000..2dbc058e0ef
--- /dev/null
+++ b/collector/src/test/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParserTest.java
@@ -0,0 +1,47 @@
+package com.usthe.collector.collect.http.promethus.exporter;
+
+import org.junit.jupiter.api.Test;
+
+import java.util.Map;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+/**
+ * @author tom
+ * @date 2022/12/4 18:14
+ */
+class ExporterParserTest {
+
+    @Test
+    void textToMetric() {
+        String resp = "# HELP go_gc_cycles_automatic_gc_cycles_total Count of completed GC cycles generated by the Go runtime.\n" +
+                        "# TYPE go_gc_cycles_automatic_gc_cycles_total counter\n" +
+                        "go_gc_cycles_automatic_gc_cycles_total 0\n" +
+                        "# HELP go_gc_cycles_forced_gc_cycles_total Count of completed GC cycles forced by the application.\n" +
+                        "# TYPE go_gc_cycles_forced_gc_cycles_total counter\n" +
+                        "go_gc_cycles_forced_gc_cycles_total 0\n" +
+                        "# HELP go_gc_cycles_total_gc_cycles_total Count of all completed GC cycles.\n" +
+                        "# TYPE go_gc_cycles_total_gc_cycles_total counter\n" +
+                        "go_gc_cycles_total_gc_cycles_total 0\n" +
+                        "# HELP go_gc_duration_seconds A summary of the pause duration of garbage collection cycles.\n" +
+                        "# TYPE go_gc_duration_seconds summary\n" +
+                        "go_gc_duration_seconds{quantile=\"0\"} 0\n" +
+                        "go_gc_duration_seconds{quantile=\"0.25\"} 0\n" +
+                        "go_gc_duration_seconds{quantile=\"0.5\"} 0\n" +
+                        "go_gc_duration_seconds{quantile=\"0.75\"} 0\n" +
+                        "go_gc_duration_seconds{quantile=\"1\"} 0\n" +
+                        "# TYPE jvm info\n" +
+                        "# HELP jvm VM version info\n" +
+                        "jvm_info{runtime=\"OpenJDK Runtime Environment\",vendor=\"Azul Systems, Inc.\",version=\"11.0.13+8-LTS\"} 1.0\n" +
+                        "# TYPE jvm_gc_collection_seconds summary\n" +
+                        "# HELP jvm_gc_collection_seconds Time spent in a given JVM garbage collector in seconds.\n" +
+                        "jvm_gc_collection_seconds_count{gc=\"G1 Young Generation\"} 10.0\n" +
+                        "jvm_gc_collection_seconds_sum{gc=\"G1 Young Generation\"} 0.051\n" +
+                        "jvm_gc_collection_seconds_count{gc=\"G1 Old Generation\"} 0.0\n" +
+                        "jvm_gc_collection_seconds_sum{gc=\"G1 Old Generation\"} 0.0\n" +
+                        "# EOF";
+        ExporterParser parser = new ExporterParser();
+        Map<String, MetricFamily> metricFamilyMap = parser.textToMetric(resp);
+        assertEquals(metricFamilyMap.size(), 6);
+    }
+}
\ No newline at end of file
diff --git a/common/src/main/java/com/usthe/common/util/StrBuffer.java b/common/src/main/java/com/usthe/common/util/StrBuffer.java
index 6c990c15c68..607edfc0c0b 100644
--- a/common/src/main/java/com/usthe/common/util/StrBuffer.java
+++ b/common/src/main/java/com/usthe/common/util/StrBuffer.java
@@ -97,7 +97,7 @@ public static long parseLong(String s) {
         if (NEGATIVE_INF.equalsIgnoreCase(s)) {
             return NEGATIVE_INF_VALUE;
         }
-        return Long.parseLong(s);
+        return Double.valueOf(s).longValue();
     }
 
     // string -> double, 需要判断是否为INF

From b133c4dba9ab831cb1aa97bbbd6a1210f9247b45 Mon Sep 17 00:00:00 2001
From: tomsun28 <tomsun28@outlook.com>
Date: Sun, 4 Dec 2022 22:08:45 +0800
Subject: [PATCH 15/22] [collector] update

---
 .../java/com/usthe/collector/collect/http/HttpCollectImpl.java | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/collector/src/main/java/com/usthe/collector/collect/http/HttpCollectImpl.java b/collector/src/main/java/com/usthe/collector/collect/http/HttpCollectImpl.java
index 0a34744161b..d72eb09b0f0 100644
--- a/collector/src/main/java/com/usthe/collector/collect/http/HttpCollectImpl.java
+++ b/collector/src/main/java/com/usthe/collector/collect/http/HttpCollectImpl.java
@@ -525,9 +525,6 @@ public HttpUriRequest createHttpRequest(HttpProtocol httpProtocol) {
             requestBuilder.addHeader(HttpHeaders.ACCEPT, "application/json");
         } else if (DispatchConstants.PARSE_XML_PATH.equals(httpProtocol.getParseType())) {
             requestBuilder.addHeader(HttpHeaders.ACCEPT, "text/xml,application/xml");
-        } else if (DispatchConstants.PARSE_PROMETHEUS.equals(httpProtocol.getParseType())) {
-            requestBuilder.addHeader(HttpHeaders.ACCEPT, DispatchConstants.PARSE_PROMETHEUS_ACCEPT);
-            requestBuilder.addHeader(HttpHeaders.ACCEPT_ENCODING, "gzip");
         } else {
             requestBuilder.addHeader(HttpHeaders.ACCEPT, "*/*");
         }

From 323c58594d28918a274262c05f6a5e109cc38cd3 Mon Sep 17 00:00:00 2001
From: Ceilzcx <1758619238@qq.com>
Date: Mon, 5 Dec 2022 14:57:04 +0800
Subject: [PATCH 16/22] ExporterParser change to singleton mode

---
 .../collect/http/HttpCollectImpl.java         |  4 +++-
 .../promethus/exporter/ExporterParser.java    | 21 ++++++++++++++-----
 .../exporter/ExporterParserTest.java          |  2 +-
 3 files changed, 20 insertions(+), 7 deletions(-)

diff --git a/collector/src/main/java/com/usthe/collector/collect/http/HttpCollectImpl.java b/collector/src/main/java/com/usthe/collector/collect/http/HttpCollectImpl.java
index d72eb09b0f0..453a7585f5f 100644
--- a/collector/src/main/java/com/usthe/collector/collect/http/HttpCollectImpl.java
+++ b/collector/src/main/java/com/usthe/collector/collect/http/HttpCollectImpl.java
@@ -117,6 +117,8 @@ public void collect(CollectRep.MetricsData.Builder builder,
                 return;
             } else {
                 // 2xx 3xx 状态码 成功
+                // todo 这里直接将InputStream转为了String, 对于prometheus exporter大数据来说, 会生成大对象, 可能会严重影响JVM内存空间
+                // todo 方法一、使用InputStream进行解析, 代码改动大; 方法二、手动触发gc, 可以参考dubbo for long i
                 String resp = EntityUtils.toString(response.getEntity(), StandardCharsets.UTF_8);
                 // 根据不同的解析方式解析
                 if (resp == null || "".equals(resp)) {
@@ -371,7 +373,7 @@ private void parseResponseByPromQL(String resp, List<String> aliasFields, HttpPr
 
     private void parseResponseByPrometheusExporter(String resp, List<String> aliasFields,
                                                    CollectRep.MetricsData.Builder builder) {
-        ExporterParser parser = new ExporterParser();
+        ExporterParser parser = ExporterParser.getInstance();
         Map<String, MetricFamily> metricFamilyMap = parser.textToMetric(resp);
         String metrics = builder.getMetrics();
         if (metricFamilyMap.containsKey(metrics)) {
diff --git a/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java
index 11356158b00..509fc70a68d 100644
--- a/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java
+++ b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java
@@ -36,6 +36,18 @@ public class ExporterParser {
     private String currentQuantile;
     private String currentBucket;
 
+    private static ExporterParser instance;
+
+    public static synchronized ExporterParser getInstance() {
+        if (instance == null) {
+            instance = new ExporterParser();
+        }
+        return instance;
+    }
+
+    private ExporterParser() {
+    }
+
     public Map<String, MetricFamily> textToMetric(String resp) {
         // key: metric name, value: metric family
         Map<String, MetricFamily> metricMap = new ConcurrentHashMap<>();
@@ -144,10 +156,10 @@ private void parseMetric(Map<String, MetricFamily> metricMap, StrBuffer buffer)
             metricList.add(metric);
         }
 
-        this.readLabels(metricFamily, metric, null, buffer);
+        this.readLabels(metricFamily, metric, buffer);
     }
 
-    private void readLabels(MetricFamily metricFamily, MetricFamily.Metric metric, MetricFamily.Label label, StrBuffer buffer) {
+    private void readLabels(MetricFamily metricFamily, MetricFamily.Metric metric, StrBuffer buffer) {
         buffer.skipBlankTabs();
         if (buffer.isEmpty()) return;
         metric.setLabelPair(new ArrayList<>());
@@ -155,7 +167,7 @@ private void readLabels(MetricFamily metricFamily, MetricFamily.Metric metric, M
             buffer.read();
             this.startReadLabelName(metricFamily, metric, buffer);
         } else {
-            this.readLabelValue(metricFamily, metric, label, buffer);
+            this.readLabelValue(metricFamily, metric, null, buffer);
         }
     }
 
@@ -269,8 +281,7 @@ else if (StringUtils.isNotEmpty(this.currentQuantile)) {
                 }
                 if (label != null && this.isSum(label.getName())) {
                     histogram.setSum(buffer.toDouble());
-                }
-                else if (label != null && this.isCount(label.getName())) {
+                } else if (label != null && this.isCount(label.getName())) {
                     histogram.setCount(buffer.toLong());
                 }
                 // 处理 "xxx{quantile=\"0\"} 0" 的格式
diff --git a/collector/src/test/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParserTest.java b/collector/src/test/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParserTest.java
index 2dbc058e0ef..226819c5ddf 100644
--- a/collector/src/test/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParserTest.java
+++ b/collector/src/test/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParserTest.java
@@ -40,7 +40,7 @@ void textToMetric() {
                         "jvm_gc_collection_seconds_count{gc=\"G1 Old Generation\"} 0.0\n" +
                         "jvm_gc_collection_seconds_sum{gc=\"G1 Old Generation\"} 0.0\n" +
                         "# EOF";
-        ExporterParser parser = new ExporterParser();
+        ExporterParser parser = ExporterParser.getInstance();
         Map<String, MetricFamily> metricFamilyMap = parser.textToMetric(resp);
         assertEquals(metricFamilyMap.size(), 6);
     }

From b6483e65505bc2c5cef1be3f04ecdf0cb742b598 Mon Sep 17 00:00:00 2001
From: Ceilzcx <1758619238@qq.com>
Date: Mon, 5 Dec 2022 16:12:47 +0800
Subject: [PATCH 17/22] add ExporterParser currentMetricFamily

---
 .../collect/http/HttpCollectImpl.java         |   2 +-
 .../promethus/exporter/ExporterParser.java    | 117 ++++++------------
 .../exporter/ExporterParserTest.java          |   2 +-
 3 files changed, 39 insertions(+), 82 deletions(-)

diff --git a/collector/src/main/java/com/usthe/collector/collect/http/HttpCollectImpl.java b/collector/src/main/java/com/usthe/collector/collect/http/HttpCollectImpl.java
index 453a7585f5f..322c0b327bd 100644
--- a/collector/src/main/java/com/usthe/collector/collect/http/HttpCollectImpl.java
+++ b/collector/src/main/java/com/usthe/collector/collect/http/HttpCollectImpl.java
@@ -373,7 +373,7 @@ private void parseResponseByPromQL(String resp, List<String> aliasFields, HttpPr
 
     private void parseResponseByPrometheusExporter(String resp, List<String> aliasFields,
                                                    CollectRep.MetricsData.Builder builder) {
-        ExporterParser parser = ExporterParser.getInstance();
+        ExporterParser parser = new ExporterParser();
         Map<String, MetricFamily> metricFamilyMap = parser.textToMetric(resp);
         String metrics = builder.getMetrics();
         if (metricFamilyMap.containsKey(metrics)) {
diff --git a/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java
index 509fc70a68d..702e113c69c 100644
--- a/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java
+++ b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java
@@ -28,26 +28,15 @@ public class ExporterParser {
     private static final String NAME_LABEL = "__name__";
     private static final String SUM_SUFFIX = "_sum";
     private static final String COUNT_SUFFIX = "_count";
-    private static final String BUCKET_SUFFIX = "_bucket";
-    private static final String INFO_SUFFIX = "_info";
-    private static final String TOTAL_SUFFIX = "_total";
-    private static final String CREATED_SUFFIX = "_created";
+//    private static final String BUCKET_SUFFIX = "_bucket";
+//    private static final String INFO_SUFFIX = "_info";
+//    private static final String TOTAL_SUFFIX = "_total";
+//    private static final String CREATED_SUFFIX = "_created";
 
+    private MetricFamily currentMetricFamily;
     private String currentQuantile;
     private String currentBucket;
 
-    private static ExporterParser instance;
-
-    public static synchronized ExporterParser getInstance() {
-        if (instance == null) {
-            instance = new ExporterParser();
-        }
-        return instance;
-    }
-
-    private ExporterParser() {
-    }
-
     public Map<String, MetricFamily> textToMetric(String resp) {
         // key: metric name, value: metric family
         Map<String, MetricFamily> metricMap = new ConcurrentHashMap<>();
@@ -64,6 +53,7 @@ private void parseLine(Map<String, MetricFamily> metricMap, StrBuffer buffer) {
         switch (buffer.charAt(0)) {
             case '#':
                 buffer.read();
+                this.currentMetricFamily = null;
                 this.parseComment(metricMap, buffer);
                 break;
             case '\n':
@@ -71,7 +61,7 @@ private void parseLine(Map<String, MetricFamily> metricMap, StrBuffer buffer) {
             default:
                 this.currentBucket = null;
                 this.currentQuantile = null;
-                this.parseMetric(metricMap, buffer);
+                this.parseMetric(buffer);
         }
     }
 
@@ -87,98 +77,80 @@ private void parseComment(Map<String, MetricFamily> metricMap, StrBuffer buffer)
             return;
         }
         String metricName = this.readTokenAsMetricName(buffer);
-        MetricFamily metricFamily = metricMap.computeIfAbsent(metricName, key -> new MetricFamily());
-        metricFamily.setName(metricName);
+        this.currentMetricFamily = metricMap.computeIfAbsent(metricName, key -> new MetricFamily());
+        this.currentMetricFamily.setName(metricName);
         switch (token) {
             case HELP:
-                this.parseHelp(metricFamily, buffer);
+                this.parseHelp(buffer);
                 break;
             case TYPE:
-                this.parseType(metricFamily, buffer);
+                this.parseType(buffer);
                 break;
             default:
         }
     }
 
-    private void parseHelp(MetricFamily metricFamily, StrBuffer line) {
+    private void parseHelp(StrBuffer line) {
         line.skipBlankTabs();
-        metricFamily.setHelp(line.toStr());
+        this.currentMetricFamily.setHelp(line.toStr());
     }
 
-    private void parseType(MetricFamily metricFamily, StrBuffer line) {
+    private void parseType(StrBuffer line) {
         line.skipBlankTabs();
         String type = line.toStr().toLowerCase();
         MetricType metricType = MetricType.getType(type);
         if (metricType == null) {
             throw new ParseException("pare type error");
         }
-        metricFamily.setMetricType(metricType);
+        this.currentMetricFamily.setMetricType(metricType);
     }
 
-    private void parseMetric(Map<String, MetricFamily> metricMap, StrBuffer buffer) {
+    private void parseMetric(StrBuffer buffer) {
         String metricName = this.readTokenAsMetricName(buffer);
-        MetricFamily metricFamily = metricMap.get(metricName);
-        if (metricFamily == null) {
-            if (this.isCount(metricName)) {
-                metricFamily = metricMap.get(metricName.substring(0, metricName.length() - COUNT_SUFFIX.length()));
-            } else if (this.isSum(metricName)) {
-                metricFamily = metricMap.get(metricName.substring(0, metricName.length() - SUM_SUFFIX.length()));
-            } else if (this.isBucket(metricName)) {
-                metricFamily = metricMap.get(metricName.substring(0, metricName.length() - BUCKET_SUFFIX.length()));
-            } else if (this.isInfo(metricName)) {
-                metricFamily = metricMap.get(metricName.substring(0, metricName.length() - INFO_SUFFIX.length()));
-            } else if (this.isTotal(metricName)) {
-                metricFamily = metricMap.get(metricName.substring(0, metricName.length() - TOTAL_SUFFIX.length()));
-            } else if (this.isCreated(metricName)) {
-                // metricFamily = metricMap.get(metricName.substring(0, metricName.length() - CREATED_SUFFIX.length()));
-                // ignore counter _created value
-                return;
-            }
-            if (metricFamily == null) {
-                log.error("line {} parse has no such HELP and TYPE", metricName);
-                return;
-            }
+        if (StringUtils.isEmpty(metricName)) {
+            log.error("error parse metric, metric name is null, line: {}", buffer.toStr());
+            return;
         }
-        List<MetricFamily.Metric> metricList = metricFamily.getMetricList();
+        List<MetricFamily.Metric> metricList = this.currentMetricFamily.getMetricList();
         if (metricList == null) {
             metricList = new ArrayList<>();
-            metricFamily.setMetricList(metricList);
+            this.currentMetricFamily.setMetricList(metricList);
         }
         // todo 这里可能存在问题, 目前逻辑是HISTOGRAM和SUMMARY只创建一个metric
         //  相比源码有所改动: 源码通过属性存储解析结果; 这边通过参数传递
         MetricFamily.Metric metric;
         if (!metricList.isEmpty() &&
-                (metricFamily.getMetricType().equals(MetricType.HISTOGRAM) ||
-                        metricFamily.getMetricType().equals(MetricType.SUMMARY))) {
+                (this.currentMetricFamily.getMetricType().equals(MetricType.HISTOGRAM) ||
+                        this.currentMetricFamily.getMetricType().equals(MetricType.SUMMARY))) {
             metric = metricList.get(0);
         } else {
             metric = new MetricFamily.Metric();
             metricList.add(metric);
         }
 
-        this.readLabels(metricFamily, metric, buffer);
+        this.readLabels(metric, buffer);
     }
 
-    private void readLabels(MetricFamily metricFamily, MetricFamily.Metric metric, StrBuffer buffer) {
+    private void readLabels(MetricFamily.Metric metric, StrBuffer buffer) {
         buffer.skipBlankTabs();
         if (buffer.isEmpty()) return;
         metric.setLabelPair(new ArrayList<>());
         if (buffer.charAt(0) == '{') {
             buffer.read();
-            this.startReadLabelName(metricFamily, metric, buffer);
+            this.startReadLabelName(metric, buffer);
         } else {
-            this.readLabelValue(metricFamily, metric, null, buffer);
+            this.readLabelValue(metric, null, buffer);
         }
     }
 
-    private void startReadLabelName(MetricFamily metricFamily, MetricFamily.Metric metric, StrBuffer buffer) {
+    private void startReadLabelName(MetricFamily.Metric metric, StrBuffer buffer) {
         buffer.skipBlankTabs();
         if (buffer.isEmpty()) return;
         if (buffer.charAt(0) == '}') {
             buffer.read();
             buffer.skipBlankTabs();
             if (buffer.isEmpty()) return;
-            this.readLabelValue(metricFamily, metric, new MetricFamily.Label(), buffer);
+            this.readLabelValue(metric, new MetricFamily.Label(), buffer);
             return;
         }
         String labelName = this.readTokenAsLabelName(buffer);
@@ -190,10 +162,10 @@ private void startReadLabelName(MetricFamily metricFamily, MetricFamily.Metric m
         if (buffer.read() != '=') {
             throw new ParseException("parse error, not match the format of labelName=labelValue");
         }
-        this.startReadLabelValue(metricFamily, metric, label, buffer);
+        this.startReadLabelValue(metric, label, buffer);
     }
 
-    private void startReadLabelValue(MetricFamily metricFamily, MetricFamily.Metric metric, MetricFamily.Label label, StrBuffer buffer) {
+    private void startReadLabelValue(MetricFamily.Metric metric, MetricFamily.Label label, StrBuffer buffer) {
         buffer.skipBlankTabs();
         if (buffer.isEmpty()) return;
         char c = buffer.read();
@@ -205,9 +177,9 @@ private void startReadLabelValue(MetricFamily metricFamily, MetricFamily.Metric
         if (!this.isValidLabelValue(labelValue)) {
             throw new ParseException("no valid label value: " + labelValue);
         }
-        if (metricFamily.getMetricType().equals(MetricType.SUMMARY) && label.getName().equals(QUANTILE_LABEL)) {
+        if (this.currentMetricFamily.getMetricType().equals(MetricType.SUMMARY) && label.getName().equals(QUANTILE_LABEL)) {
             this.currentQuantile = labelValue;
-        } else if (metricFamily.getMetricType().equals(MetricType.HISTOGRAM) && label.getName().equals(BUCKET_LABEL)) {
+        } else if (this.currentMetricFamily.getMetricType().equals(MetricType.HISTOGRAM) && label.getName().equals(BUCKET_LABEL)) {
             this.currentBucket = labelValue;
         } else {
             metric.getLabelPair().add(label);
@@ -216,20 +188,20 @@ private void startReadLabelValue(MetricFamily metricFamily, MetricFamily.Metric
         c = buffer.read();
         switch (c) {
             case ',':
-                this.startReadLabelName(metricFamily, metric, buffer);
+                this.startReadLabelName(metric, buffer);
                 break;
             case '}':
-                this.readLabelValue(metricFamily, metric, label, buffer);
+                this.readLabelValue(metric, label, buffer);
                 break;
             default:
                 throw new ParseException("expected '}' or ',' at end of label value, line: " + buffer.toStr());
         }
     }
 
-    private void readLabelValue(MetricFamily metricFamily, MetricFamily.Metric metric, MetricFamily.Label label, StrBuffer buffer) {
+    private void readLabelValue(MetricFamily.Metric metric, MetricFamily.Label label, StrBuffer buffer) {
         buffer.skipBlankTabs();
         if (buffer.isEmpty()) return;
-        switch (metricFamily.getMetricType()) {
+        switch (this.currentMetricFamily.getMetricType()) {
             case INFO:
                 MetricFamily.Info info = new MetricFamily.Info();
                 info.setValue(buffer.toDouble());
@@ -416,19 +388,4 @@ private boolean isCount(String s) {
         return s != null && s.endsWith(COUNT_SUFFIX);
     }
 
-    private boolean isInfo(String s) {
-        return s != null && s.endsWith(INFO_SUFFIX);
-    }
-
-    private boolean isTotal(String s) {
-        return s != null && s.endsWith(TOTAL_SUFFIX);
-    }
-
-    private boolean isCreated(String s) {
-        return s != null && s.endsWith(CREATED_SUFFIX);
-    }
-
-    private boolean isBucket(String s) {
-        return s != null && s.endsWith(BUCKET_SUFFIX);
-    }
 }
diff --git a/collector/src/test/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParserTest.java b/collector/src/test/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParserTest.java
index 226819c5ddf..2dbc058e0ef 100644
--- a/collector/src/test/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParserTest.java
+++ b/collector/src/test/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParserTest.java
@@ -40,7 +40,7 @@ void textToMetric() {
                         "jvm_gc_collection_seconds_count{gc=\"G1 Old Generation\"} 0.0\n" +
                         "jvm_gc_collection_seconds_sum{gc=\"G1 Old Generation\"} 0.0\n" +
                         "# EOF";
-        ExporterParser parser = ExporterParser.getInstance();
+        ExporterParser parser = new ExporterParser();
         Map<String, MetricFamily> metricFamilyMap = parser.textToMetric(resp);
         assertEquals(metricFamilyMap.size(), 6);
     }

From 4cf9c60d9c12e20ef25622d37a9a7410aab920a9 Mon Sep 17 00:00:00 2001
From: Ceilzcx <1758619238@qq.com>
Date: Mon, 19 Dec 2022 14:27:00 +0800
Subject: [PATCH 18/22] =?UTF-8?q?=E6=A0=BC=E5=BC=8F=E5=8C=96=E4=BC=98?=
 =?UTF-8?q?=E5=8C=96=E4=BB=A3=E7=A0=81,=20=E4=BD=BF=E7=94=A8map=E7=AE=A1?=
 =?UTF-8?q?=E7=90=86ExporterParser=E9=98=B2=E6=AD=A2=E6=97=A0=E9=99=90?=
 =?UTF-8?q?=E5=88=B6=E5=88=9B=E5=BB=BA=E5=AF=B9=E8=B1=A1,=20=E4=BD=BF?=
 =?UTF-8?q?=E7=94=A8=E9=94=81=E6=9C=BA=E5=88=B6=E5=8F=8D=E6=AD=A3=E5=A4=9A?=
 =?UTF-8?q?=E7=BA=BF=E7=A8=8B=E8=AF=BB=E5=86=99=E5=86=B2=E7=AA=81?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../collect/http/HttpCollectImpl.java         | 30 ++++++++++++-------
 .../promethus/exporter/ExporterParser.java    | 18 +++++++++--
 2 files changed, 34 insertions(+), 14 deletions(-)

diff --git a/collector/src/main/java/com/usthe/collector/collect/http/HttpCollectImpl.java b/collector/src/main/java/com/usthe/collector/collect/http/HttpCollectImpl.java
index 322c0b327bd..45f80ba95a1 100644
--- a/collector/src/main/java/com/usthe/collector/collect/http/HttpCollectImpl.java
+++ b/collector/src/main/java/com/usthe/collector/collect/http/HttpCollectImpl.java
@@ -78,6 +78,7 @@
 import java.util.LinkedList;
 import java.util.List;
 import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
 import java.util.stream.Collectors;
 
 
@@ -89,7 +90,8 @@
 @Slf4j
 public class HttpCollectImpl extends AbstractCollect {
 
-    public HttpCollectImpl() {}
+    public HttpCollectImpl() {
+    }
 
     @Override
     public void collect(CollectRep.MetricsData.Builder builder,
@@ -124,7 +126,7 @@ public void collect(CollectRep.MetricsData.Builder builder,
                 if (resp == null || "".equals(resp)) {
                     log.info("http response entity is empty, status: {}.", statusCode);
                 }
-                Long responseTime  = System.currentTimeMillis() - startTime;
+                Long responseTime = System.currentTimeMillis() - startTime;
                 String parseType = metrics.getHttp().getParseType();
                 try {
                     if (DispatchConstants.PARSE_DEFAULT.equals(parseType)) {
@@ -137,7 +139,7 @@ public void collect(CollectRep.MetricsData.Builder builder,
                         parseResponseByPrometheusExporter(resp, metrics.getAliasFields(), builder);
                     } else if (DispatchConstants.PARSE_XML_PATH.equals(parseType)) {
                         parseResponseByXmlPath(resp, metrics.getAliasFields(), metrics.getHttp(), builder);
-                    } else if (DispatchConstants.PARSE_WEBSITE.equals(parseType)){
+                    } else if (DispatchConstants.PARSE_WEBSITE.equals(parseType)) {
                         parseResponseByWebsite(resp, metrics.getAliasFields(), metrics.getHttp(), builder, responseTime);
                     } else if (DispatchConstants.PARSE_SITE_MAP.equals(parseType)) {
                         parseResponseBySiteMap(resp, metrics.getAliasFields(), builder);
@@ -323,7 +325,7 @@ private void parseResponseByJsonPath(String resp, List<String> aliasFields, Http
                 continue;
             }
             if (objectValue instanceof Map) {
-                Map<String, Object> stringMap = (Map<String, Object>)objectValue;
+                Map<String, Object> stringMap = (Map<String, Object>) objectValue;
                 CollectRep.ValueRow.Builder valueRowBuilder = CollectRep.ValueRow.newBuilder();
                 for (String alias : aliasFields) {
                     Object value = stringMap.get(alias);
@@ -368,12 +370,17 @@ private void parseResponseByJsonPath(String resp, List<String> aliasFields, Http
     private void parseResponseByPromQL(String resp, List<String> aliasFields, HttpProtocol http,
                                        CollectRep.MetricsData.Builder builder) {
         AbstractPrometheusParse prometheusParser = PrometheusParseCreater.getPrometheusParse();
-        prometheusParser.handle(resp,aliasFields,http,builder);
+        prometheusParser.handle(resp, aliasFields, http, builder);
     }
 
+    private static final Map<Long, ExporterParser> EXPORTER_PARSER_TABLE = new ConcurrentHashMap<>();
+
     private void parseResponseByPrometheusExporter(String resp, List<String> aliasFields,
                                                    CollectRep.MetricsData.Builder builder) {
-        ExporterParser parser = new ExporterParser();
+        if (!EXPORTER_PARSER_TABLE.containsKey(builder.getId())) {
+            EXPORTER_PARSER_TABLE.put(builder.getId(), new ExporterParser());
+        }
+        ExporterParser parser = EXPORTER_PARSER_TABLE.get(builder.getId());
         Map<String, MetricFamily> metricFamilyMap = parser.textToMetric(resp);
         String metrics = builder.getMetrics();
         if (metricFamilyMap.containsKey(metrics)) {
@@ -475,6 +482,7 @@ public HttpContext createHttpContext(HttpProtocol httpProtocol) {
 
     /**
      * 根据http配置参数构造请求头
+     *
      * @param httpProtocol http参数配置
      * @return 请求体
      */
@@ -483,9 +491,9 @@ public HttpUriRequest createHttpRequest(HttpProtocol httpProtocol) {
         // method
         String httpMethod = httpProtocol.getMethod().toUpperCase();
         if (HttpMethod.GET.matches(httpMethod)) {
-            requestBuilder =  RequestBuilder.get();
+            requestBuilder = RequestBuilder.get();
         } else if (HttpMethod.POST.matches(httpMethod)) {
-            requestBuilder =  RequestBuilder.post();
+            requestBuilder = RequestBuilder.post();
         } else if (HttpMethod.PUT.matches(httpMethod)) {
             requestBuilder = RequestBuilder.put();
         } else if (HttpMethod.DELETE.matches(httpMethod)) {
@@ -510,7 +518,7 @@ public HttpUriRequest createHttpRequest(HttpProtocol httpProtocol) {
         // The default request header can be overridden if customized
         // keep-alive
         requestBuilder.addHeader(HttpHeaders.CONNECTION, "keep-alive");
-        requestBuilder.addHeader(HttpHeaders.USER_AGENT,"Mozilla/5.0 (Windows NT 6.1; WOW64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.76 Safari/537.36");
+        requestBuilder.addHeader(HttpHeaders.USER_AGENT, "Mozilla/5.0 (Windows NT 6.1; WOW64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.76 Safari/537.36");
         // headers  The custom request header is overwritten here
         Map<String, String> headers = httpProtocol.getHeaders();
         if (headers != null && !headers.isEmpty()) {
@@ -543,13 +551,13 @@ public HttpUriRequest createHttpRequest(HttpProtocol httpProtocol) {
                         && StringUtils.hasText(authorization.getBasicAuthPassword())) {
                     String authStr = authorization.getBasicAuthUsername() + ":" + authorization.getBasicAuthPassword();
                     String encodedAuth = new String(Base64.encodeBase64(authStr.getBytes(StandardCharsets.UTF_8)), StandardCharsets.UTF_8);
-                    requestBuilder.addHeader(HttpHeaders.AUTHORIZATION,  DispatchConstants.BASIC + " " + encodedAuth);
+                    requestBuilder.addHeader(HttpHeaders.AUTHORIZATION, DispatchConstants.BASIC + " " + encodedAuth);
                 }
             }
         }
 
         // 请求内容，会覆盖post协议的params
-        if(StringUtils.hasLength(httpProtocol.getPayload())){
+        if (StringUtils.hasLength(httpProtocol.getPayload())) {
             requestBuilder.setEntity(new StringEntity(httpProtocol.getPayload(), StandardCharsets.UTF_8));
         }
 
diff --git a/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java
index 702e113c69c..f539e4c9b23 100644
--- a/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java
+++ b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java
@@ -10,6 +10,8 @@
 import java.util.List;
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.locks.Lock;
+import java.util.concurrent.locks.ReentrantLock;
 
 /**
  * @author ceilzcx
@@ -37,12 +39,22 @@ public class ExporterParser {
     private String currentQuantile;
     private String currentBucket;
 
+    private final Lock lock = new ReentrantLock();
+
     public Map<String, MetricFamily> textToMetric(String resp) {
         // key: metric name, value: metric family
         Map<String, MetricFamily> metricMap = new ConcurrentHashMap<>();
-        String[] lines = resp.split("\n");
-        for (String line : lines) {
-            this.parseLine(metricMap, new StrBuffer(line));
+        lock.lock();
+        try {
+            String[] lines = resp.split("\n");
+            for (String line : lines) {
+                this.parseLine(metricMap, new StrBuffer(line));
+            }
+            return metricMap;
+        } catch (Exception e) {
+            log.error("parse prometheus exporter data error, msg: {}", e.getMessage());
+        } finally {
+            lock.unlock();
         }
         return metricMap;
     }

From d3dd6680ea11cad21b5f3541d789f4f5722b23c2 Mon Sep 17 00:00:00 2001
From: Ceilzcx <1758619238@qq.com>
Date: Mon, 19 Dec 2022 19:48:16 +0800
Subject: [PATCH 19/22] =?UTF-8?q?=E4=BF=AE=E6=94=B9=E6=B3=A8=E8=A7=A3?=
 =?UTF-8?q?=E6=A0=BC=E5=BC=8F?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../promethus/exporter/ExporterParser.java    | 34 ++++++++++++++-----
 1 file changed, 25 insertions(+), 9 deletions(-)

diff --git a/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java
index f539e4c9b23..8396b06f008 100644
--- a/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java
+++ b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java
@@ -30,10 +30,6 @@ public class ExporterParser {
     private static final String NAME_LABEL = "__name__";
     private static final String SUM_SUFFIX = "_sum";
     private static final String COUNT_SUFFIX = "_count";
-//    private static final String BUCKET_SUFFIX = "_bucket";
-//    private static final String INFO_SUFFIX = "_info";
-//    private static final String TOTAL_SUFFIX = "_total";
-//    private static final String CREATED_SUFFIX = "_created";
 
     private MetricFamily currentMetricFamily;
     private String currentQuantile;
@@ -367,27 +363,47 @@ private String readTokenAsLabelValue(StrBuffer buffer) {
         return builder.toString();
     }
 
-    // 是否符合metric name首字符规则
+    /**
+     * 是否符合metric name首字符规则
+     * @param c metric字符
+     * @return true/false
+     */
     private boolean isValidMetricNameStart(char c) {
         return isValidLabelNameStart(c) || c == ':';
     }
 
-    // 是否符合metric name除首字符其他字符规则
+    /**
+     * 是否符合metric name除首字符其他字符规则
+     * @param c metric字符
+     * @return true/false
+     */
     private boolean isValidMetricNameContinuation(char c) {
         return isValidLabelNameContinuation(c) || c == ':';
     }
 
-    // 是否符合label name首字符规则
+    /**
+     * 是否符合label name首字符规则
+     * @param c metric字符
+     * @return true/false
+     */
     private boolean isValidLabelNameStart(char c) {
         return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || c == '_';
     }
 
-    // 是否符合label name除首字符其他字符规则
+    /**
+     * 是否符合label name除首字符其他字符规则
+     * @param c metric字符
+     * @return true/false
+     */
     private boolean isValidLabelNameContinuation(char c) {
         return isValidLabelNameStart(c) || (c >= '0' && c <= '9');
     }
 
-    // 检测是否是有效的utf8编码的字符串
+    /**
+     * 检测是否是有效的utf8编码的字符串
+     * @param s label value
+     * @return true/false
+     */
     private boolean isValidLabelValue(String s) {
         return s != null && s.equals(new String(s.getBytes(StandardCharsets.UTF_8)));
     }

From 3e18775b3328814c7548be20ad63ef81562e6fc9 Mon Sep 17 00:00:00 2001
From: Ceilzcx <1758619238@qq.com>
Date: Mon, 19 Dec 2022 21:02:49 +0800
Subject: [PATCH 20/22] =?UTF-8?q?=E6=A0=BC=E5=BC=8F=E5=8C=96=E6=B3=A8?=
 =?UTF-8?q?=E8=A7=A3?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../java/com/usthe/common/util/StrBuffer.java | 41 +++++++++++++++----
 1 file changed, 34 insertions(+), 7 deletions(-)

diff --git a/common/src/main/java/com/usthe/common/util/StrBuffer.java b/common/src/main/java/com/usthe/common/util/StrBuffer.java
index 607edfc0c0b..db7b3e1e5fd 100644
--- a/common/src/main/java/com/usthe/common/util/StrBuffer.java
+++ b/common/src/main/java/com/usthe/common/util/StrBuffer.java
@@ -21,7 +21,10 @@ public StrBuffer(String s) {
         this.right = s.length() - 1;
     }
 
-    // 读取当前字符, left++
+    /**
+     * 读取当前字符, left++
+     * @return 当前下标字符
+     */
     public char read() {
         if (left > right) {
             throw new IndexOutOfBoundsException("StrBuffer use charAt method error. left=" + left + ", right=" + right);
@@ -29,13 +32,20 @@ public char read() {
         return chars[left++];
     }
 
+    /**
+     * 回滚一个字符
+     */
     public void rollback() {
         if (left > 0) {
             left--;
         }
     }
 
-    // 只查询left+i的下标字符, 不会进行left++的操作
+    /**
+     * 只查询left+i的下标字符, 不会进行left++的操作
+     * @param i 下标
+     * @return left+i下标对应的字符
+     */
     public char charAt(int i) {
         if (left + i > right) {
             throw new IndexOutOfBoundsException("StrBuffer use charAt method error. left=" + left + ", i=" + i);
@@ -43,7 +53,10 @@ public char charAt(int i) {
         return chars[left + i];
     }
 
-    // char[] -> String
+    /**
+     * 转string对象
+      * @return char数组对应的字符串
+     */
     public String toStr() {
         StringBuilder builder = new StringBuilder();
         for (int i = left; i <= right; i++) {
@@ -52,13 +65,19 @@ public String toStr() {
         return builder.toString();
     }
 
-    // char[] -> double
+    /**
+     * 转double
+     * @return char数组对应的浮点数
+     */
     public double toDouble() {
         String s = toStr();
         return parseDouble(s);
     }
 
-    // char[] -> long
+    /**
+     * 转long
+     * @return char数组对应的长整数
+     */
     public long toLong() {
         String s = toStr();
         return parseLong(s);
@@ -89,7 +108,11 @@ public boolean isEmpty() {
         return left > right;
     }
 
-    // string -> long, 需要判断是否为INF
+    /**
+     * string -> long, 需要判断是否为INF
+     * @param s 字符串
+     * @return 长整数
+     */
     public static long parseLong(String s) {
         if (POSITIVE_INF.equalsIgnoreCase(s)) {
             return POSITIVE_INF_VALUE;
@@ -100,7 +123,11 @@ public static long parseLong(String s) {
         return Double.valueOf(s).longValue();
     }
 
-    // string -> double, 需要判断是否为INF
+    /**
+     * string -> double, 需要判断是否为INF
+     * @param s 字符串
+     * @return 浮点数
+     */
     public static double parseDouble(String s) {
         if (POSITIVE_INF.equalsIgnoreCase(s)) {
             return POSITIVE_INF_VALUE;

From bcbc075dae8bbe4c106dbc0f5eb2b2c9b922d212 Mon Sep 17 00:00:00 2001
From: Ceilzcx <1758619238@qq.com>
Date: Tue, 20 Dec 2022 10:22:51 +0800
Subject: [PATCH 21/22] =?UTF-8?q?=E4=BF=AE=E6=94=B9=E6=B3=A8=E8=A7=A3?=
 =?UTF-8?q?=E6=A0=BC=E5=BC=8F?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../promethus/exporter/ExporterParser.java    | 33 ++++++++++++++++---
 .../java/com/usthe/common/util/StrBuffer.java |  9 ++++-
 2 files changed, 37 insertions(+), 5 deletions(-)

diff --git a/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java
index 8396b06f008..3e6219f916f 100644
--- a/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java
+++ b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java
@@ -278,7 +278,12 @@ else if (StringUtils.isNotEmpty(this.currentBucket)) {
         }
     }
 
-    // 读取第一个空格符前的token
+    /**
+     * 读取第一个空格符前的token
+     *
+     * @param buffer 行数据对象
+     * @return token unit
+     */
     private String readTokenUnitWhitespace(StrBuffer buffer) {
         StringBuilder builder = new StringBuilder();
         while (!buffer.isEmpty()) {
@@ -291,7 +296,12 @@ private String readTokenUnitWhitespace(StrBuffer buffer) {
         return builder.toString();
     }
 
-    // 获取指标的名称
+    /**
+     * 获取指标的名称
+     *
+     * @param buffer 行数据对象
+     * @return token name
+     */
     private String readTokenAsMetricName(StrBuffer buffer) {
         StringBuilder builder = new StringBuilder();
         if (this.isValidMetricNameStart(buffer.charAt(0))) {
@@ -308,7 +318,12 @@ private String readTokenAsMetricName(StrBuffer buffer) {
         throw new ParseException("parse metric name error");
     }
 
-    // 获取Label的名称
+    /**
+     * 获取label的名称
+     *
+     * @param buffer 行数据对象
+     * @return label name
+     */
     private String readTokenAsLabelName(StrBuffer buffer) {
         StringBuilder builder = new StringBuilder();
         char c = buffer.read();
@@ -327,7 +342,12 @@ private String readTokenAsLabelName(StrBuffer buffer) {
         throw new ParseException("parse label name error");
     }
 
-    // 获取Label的值
+    /**
+     * 获取Label的值
+     *
+     * @param buffer 行数据对象
+     * @return label value
+     */
     private String readTokenAsLabelValue(StrBuffer buffer) {
         StringBuilder builder = new StringBuilder();
         boolean escaped = false;
@@ -365,6 +385,7 @@ private String readTokenAsLabelValue(StrBuffer buffer) {
 
     /**
      * 是否符合metric name首字符规则
+     *
      * @param c metric字符
      * @return true/false
      */
@@ -374,6 +395,7 @@ private boolean isValidMetricNameStart(char c) {
 
     /**
      * 是否符合metric name除首字符其他字符规则
+     *
      * @param c metric字符
      * @return true/false
      */
@@ -383,6 +405,7 @@ private boolean isValidMetricNameContinuation(char c) {
 
     /**
      * 是否符合label name首字符规则
+     *
      * @param c metric字符
      * @return true/false
      */
@@ -392,6 +415,7 @@ private boolean isValidLabelNameStart(char c) {
 
     /**
      * 是否符合label name除首字符其他字符规则
+     *
      * @param c metric字符
      * @return true/false
      */
@@ -401,6 +425,7 @@ private boolean isValidLabelNameContinuation(char c) {
 
     /**
      * 检测是否是有效的utf8编码的字符串
+     *
      * @param s label value
      * @return true/false
      */
diff --git a/common/src/main/java/com/usthe/common/util/StrBuffer.java b/common/src/main/java/com/usthe/common/util/StrBuffer.java
index db7b3e1e5fd..294ac4dffc9 100644
--- a/common/src/main/java/com/usthe/common/util/StrBuffer.java
+++ b/common/src/main/java/com/usthe/common/util/StrBuffer.java
@@ -23,6 +23,7 @@ public StrBuffer(String s) {
 
     /**
      * 读取当前字符, left++
+     *
      * @return 当前下标字符
      */
     public char read() {
@@ -43,6 +44,7 @@ public void rollback() {
 
     /**
      * 只查询left+i的下标字符, 不会进行left++的操作
+     *
      * @param i 下标
      * @return left+i下标对应的字符
      */
@@ -55,7 +57,8 @@ public char charAt(int i) {
 
     /**
      * 转string对象
-      * @return char数组对应的字符串
+     *
+     * @return char数组对应的字符串
      */
     public String toStr() {
         StringBuilder builder = new StringBuilder();
@@ -67,6 +70,7 @@ public String toStr() {
 
     /**
      * 转double
+     *
      * @return char数组对应的浮点数
      */
     public double toDouble() {
@@ -76,6 +80,7 @@ public double toDouble() {
 
     /**
      * 转long
+     *
      * @return char数组对应的长整数
      */
     public long toLong() {
@@ -110,6 +115,7 @@ public boolean isEmpty() {
 
     /**
      * string -> long, 需要判断是否为INF
+     *
      * @param s 字符串
      * @return 长整数
      */
@@ -125,6 +131,7 @@ public static long parseLong(String s) {
 
     /**
      * string -> double, 需要判断是否为INF
+     *
      * @param s 字符串
      * @return 浮点数
      */

From 128224fcc197d88623bf8d024140f323a7e39c4c Mon Sep 17 00:00:00 2001
From: Ceilzcx <1758619238@qq.com>
Date: Tue, 20 Dec 2022 10:39:19 +0800
Subject: [PATCH 22/22] =?UTF-8?q?=E8=A7=A3=E5=86=B3=E9=AD=94=E6=B3=95?=
 =?UTF-8?q?=E6=95=B0=E9=97=AE=E9=A2=98?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../promethus/exporter/ExporterParser.java    | 36 +++++++++++--------
 .../http/promethus/exporter/MetricFamily.java |  4 ++-
 2 files changed, 25 insertions(+), 15 deletions(-)

diff --git a/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java
index 3e6219f916f..c042609f7b2 100644
--- a/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java
+++ b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/ExporterParser.java
@@ -31,6 +31,14 @@ public class ExporterParser {
     private static final String SUM_SUFFIX = "_sum";
     private static final String COUNT_SUFFIX = "_count";
 
+    private static final char LEFT_CURLY_BRACKET = '{';
+    private static final char RIGHT_CURLY_BRACKET = '}';
+    private static final char EQUALS = '=';
+    private static final char QUOTES = '"';
+    private static final char ENTER = '\n';
+    private static final char SPACE = ' ';
+    private static final char COMMA = ',';
+
     private MetricFamily currentMetricFamily;
     private String currentQuantile;
     private String currentBucket;
@@ -39,7 +47,7 @@ public class ExporterParser {
 
     public Map<String, MetricFamily> textToMetric(String resp) {
         // key: metric name, value: metric family
-        Map<String, MetricFamily> metricMap = new ConcurrentHashMap<>();
+        Map<String, MetricFamily> metricMap = new ConcurrentHashMap<>(10);
         lock.lock();
         try {
             String[] lines = resp.split("\n");
@@ -64,7 +72,7 @@ private void parseLine(Map<String, MetricFamily> metricMap, StrBuffer buffer) {
                 this.currentMetricFamily = null;
                 this.parseComment(metricMap, buffer);
                 break;
-            case '\n':
+            case ENTER:
                 break;
             default:
                 this.currentBucket = null;
@@ -77,10 +85,10 @@ private void parseComment(Map<String, MetricFamily> metricMap, StrBuffer buffer)
         buffer.skipBlankTabs();
         if (buffer.isEmpty()) return;
         String token = this.readTokenUnitWhitespace(buffer);
-        if (token.equals(EOF)) {
+        if (EOF.equals(token)) {
             return;
         }
-        if (!token.equals(HELP) && !token.equals(TYPE)) {
+        if (!HELP.equals(token) && !TYPE.equals(token)) {
             log.error("parse comment error {}, start without {} or {}", buffer.toStr(), HELP, TYPE);
             return;
         }
@@ -143,7 +151,7 @@ private void readLabels(MetricFamily.Metric metric, StrBuffer buffer) {
         buffer.skipBlankTabs();
         if (buffer.isEmpty()) return;
         metric.setLabelPair(new ArrayList<>());
-        if (buffer.charAt(0) == '{') {
+        if (buffer.charAt(0) == LEFT_CURLY_BRACKET) {
             buffer.read();
             this.startReadLabelName(metric, buffer);
         } else {
@@ -154,7 +162,7 @@ private void readLabels(MetricFamily.Metric metric, StrBuffer buffer) {
     private void startReadLabelName(MetricFamily.Metric metric, StrBuffer buffer) {
         buffer.skipBlankTabs();
         if (buffer.isEmpty()) return;
-        if (buffer.charAt(0) == '}') {
+        if (buffer.charAt(0) == RIGHT_CURLY_BRACKET) {
             buffer.read();
             buffer.skipBlankTabs();
             if (buffer.isEmpty()) return;
@@ -167,7 +175,7 @@ private void startReadLabelName(MetricFamily.Metric metric, StrBuffer buffer) {
         }
         MetricFamily.Label label = new MetricFamily.Label();
         label.setName(labelName);
-        if (buffer.read() != '=') {
+        if (buffer.read() != EQUALS) {
             throw new ParseException("parse error, not match the format of labelName=labelValue");
         }
         this.startReadLabelValue(metric, label, buffer);
@@ -177,7 +185,7 @@ private void startReadLabelValue(MetricFamily.Metric metric, MetricFamily.Label
         buffer.skipBlankTabs();
         if (buffer.isEmpty()) return;
         char c = buffer.read();
-        if (c != '"') {
+        if (c != QUOTES) {
             throw new ParseException("expected '\"' at start of label value, line: " + buffer.toStr());
         }
         String labelValue = this.readTokenAsLabelValue(buffer);
@@ -195,10 +203,10 @@ private void startReadLabelValue(MetricFamily.Metric metric, MetricFamily.Label
         if (buffer.isEmpty()) return;
         c = buffer.read();
         switch (c) {
-            case ',':
+            case COMMA:
                 this.startReadLabelName(metric, buffer);
                 break;
-            case '}':
+            case RIGHT_CURLY_BRACKET:
                 this.readLabelValue(metric, label, buffer);
                 break;
             default:
@@ -288,7 +296,7 @@ private String readTokenUnitWhitespace(StrBuffer buffer) {
         StringBuilder builder = new StringBuilder();
         while (!buffer.isEmpty()) {
             char c = buffer.read();
-            if (c == ' ') {
+            if (c == SPACE) {
                 break;
             }
             builder.append(c);
@@ -356,7 +364,7 @@ private String readTokenAsLabelValue(StrBuffer buffer) {
             // 处理 '\\' 转义
             if (escaped) {
                 switch (c) {
-                    case '"':
+                    case QUOTES:
                     case '\\':
                         builder.append(c);
                         break;
@@ -368,9 +376,9 @@ private String readTokenAsLabelValue(StrBuffer buffer) {
                 }
             } else {
                 switch (c) {
-                    case '"':
+                    case QUOTES:
                         return builder.toString();
-                    case '\n':
+                    case ENTER:
                         throw new ParseException("parse label value error, next line");
                     case '\\':
                         escaped = true;
diff --git a/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/MetricFamily.java b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/MetricFamily.java
index d1ae70c6c8d..ab99d754b77 100644
--- a/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/MetricFamily.java
+++ b/collector/src/main/java/com/usthe/collector/collect/http/promethus/exporter/MetricFamily.java
@@ -106,7 +106,9 @@ public static class Summary {
 
     @Data
     public static class Quantile {
-        // 对应 prometheus 的 quantile 字段
+        /**
+         * 对应 prometheus 的 quantile 字段
+         */
         private double xLabel;
 
         private double value;