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feature: support monitoring pop3 metrics and add help doc (#1427)
Co-authored-by: tomsun28 <tomsun28@outlook.com>
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collector/src/main/java/org/dromara/hertzbeat/collector/collect/pop3/Pop3CollectImpl.java
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| package org.dromara.hertzbeat.collector.collect.pop3; | ||
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| import lombok.extern.slf4j.Slf4j; | ||
| import org.apache.commons.net.pop3.POP3MessageInfo; | ||
| import org.dromara.hertzbeat.collector.collect.AbstractCollect; | ||
| import org.dromara.hertzbeat.collector.dispatch.DispatchConstants; | ||
| import org.dromara.hertzbeat.common.constants.CollectorConstants; | ||
| import org.dromara.hertzbeat.common.constants.CommonConstants; | ||
| import org.dromara.hertzbeat.common.entity.job.Metrics; | ||
| import org.dromara.hertzbeat.common.entity.job.protocol.Pop3Protocol; | ||
| import org.dromara.hertzbeat.common.entity.message.CollectRep; | ||
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| import org.apache.commons.net.pop3.POP3SClient; | ||
| import org.apache.commons.net.pop3.POP3Client; | ||
| import org.dromara.hertzbeat.common.util.CommonUtil; | ||
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| import java.io.IOException; | ||
| import java.nio.charset.StandardCharsets; | ||
| import java.util.HashMap; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
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| /** | ||
| * pop3 collect | ||
| * @author a-little-fool | ||
| */ | ||
| @Slf4j | ||
| public class Pop3CollectImpl extends AbstractCollect { | ||
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| private final static String EMAIL_COUNT = "email_count"; | ||
| private final static String MAILBOX_SIZE = "mailbox_size"; | ||
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| public Pop3CollectImpl() { | ||
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| } | ||
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| @Override | ||
| public void collect(CollectRep.MetricsData.Builder builder, long monitorId, String app, Metrics metrics) { | ||
| long startTime = System.currentTimeMillis(); | ||
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| try { | ||
| validateParams(metrics); | ||
| } catch (Exception e) { | ||
| builder.setCode(CollectRep.Code.FAIL); | ||
| builder.setMsg(e.getMessage()); | ||
| return; | ||
| } | ||
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| Pop3Protocol pop3Protocol = metrics.getPop3(); | ||
| POP3Client pop3Client = null; | ||
| boolean ssl = Boolean.parseBoolean(pop3Protocol.getSsl()); | ||
| try { | ||
| pop3Client = createPOP3Client(pop3Protocol, ssl); | ||
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| if (pop3Client.isConnected()) { | ||
| long responseTime = System.currentTimeMillis() - startTime; | ||
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| obtainPop3Metrics(builder, pop3Client, metrics.getAliasFields(), | ||
| responseTime); | ||
| } else { | ||
| builder.setCode(CollectRep.Code.UN_CONNECTABLE); | ||
| builder.setMsg("Peer connect failed，Timeout " + pop3Protocol.getTimeout() + "ms"); | ||
| } | ||
| } catch (IOException e1) { | ||
| String errorMsg = CommonUtil.getMessageFromThrowable(e1); | ||
| log.info(errorMsg); | ||
| builder.setCode(CollectRep.Code.FAIL); | ||
| builder.setMsg(errorMsg); | ||
| } catch (Exception e2) { | ||
| String errorMsg = CommonUtil.getMessageFromThrowable(e2); | ||
| log.info(errorMsg); | ||
| builder.setCode(CollectRep.Code.FAIL); | ||
| builder.setMsg(errorMsg); | ||
| } finally { | ||
| if (pop3Client != null) { | ||
| try { | ||
| pop3Client.logout(); | ||
| pop3Client.disconnect(); | ||
| } catch (IOException e) { | ||
| String errorMsg = CommonUtil.getMessageFromThrowable(e); | ||
| log.info(errorMsg); | ||
| builder.setCode(CollectRep.Code.FAIL); | ||
| builder.setMsg(errorMsg); | ||
| } | ||
| } | ||
| } | ||
| } | ||
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| @Override | ||
| public String supportProtocol() { | ||
| return DispatchConstants.PROTOCOL_POP3; | ||
| } | ||
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| /** | ||
| * 校验参数 | ||
| * @param metrics | ||
| * @throws Exception | ||
| */ | ||
| private void validateParams(Metrics metrics) throws Exception { | ||
| Pop3Protocol pop3Protocol = metrics.getPop3(); | ||
| if (metrics == null || pop3Protocol == null || pop3Protocol.isInvalid()) { | ||
| throw new Exception("Pop3 collect must has pop3 params"); | ||
| } | ||
| } | ||
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| /** | ||
| * 创建POP3连接【支持SSL加密】 | ||
| * @param pop3Protocol | ||
| * @param ssl | ||
| * @return | ||
| * @throws IOException | ||
| */ | ||
| private POP3Client createPOP3Client(Pop3Protocol pop3Protocol, boolean ssl) throws Exception { | ||
| POP3Client pop3Client = null; | ||
| // 判断是否启用 SSL 加密连接 | ||
| if (ssl) { | ||
| pop3Client = new POP3SClient(true); | ||
| } else { | ||
| pop3Client = new POP3Client(); | ||
| } | ||
| // 设置超时时间 | ||
| int timeout = Integer.parseInt(pop3Protocol.getTimeout()); | ||
| if (timeout > 0) { | ||
| pop3Client.setConnectTimeout(timeout); | ||
| } | ||
| pop3Client.setCharset(StandardCharsets.UTF_8); | ||
| // 连接到POP3服务器 | ||
| String host = pop3Protocol.getHost(); | ||
| int port = Integer.parseInt(pop3Protocol.getPort()); | ||
| pop3Client.connect(host, port); | ||
| // 验证凭据 | ||
| String email = pop3Protocol.getEmail(); | ||
| String authorize = pop3Protocol.getAuthorize(); | ||
| boolean isAuthenticated = pop3Client.login(email, authorize); | ||
| if (!isAuthenticated) { | ||
| throw new Exception("Pop3 client authentication failed"); | ||
| } | ||
| return pop3Client; | ||
| } | ||
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| /** | ||
| * 获取Pop3指标信息 | ||
| * @param builder | ||
| * @param pop3Client | ||
| * @param aliasFields | ||
| * @param responseTime | ||
| */ | ||
| private void obtainPop3Metrics(CollectRep.MetricsData.Builder builder, POP3Client pop3Client, | ||
| List<String> aliasFields, long responseTime) throws IOException { | ||
| Map<String,Object> pop3Metrics = parsePop3Metrics(pop3Client, aliasFields); | ||
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| CollectRep.ValueRow.Builder valueRowBuilder = CollectRep.ValueRow.newBuilder(); | ||
| for (String alias : aliasFields) { | ||
| Object value = pop3Metrics.get(alias); | ||
| if (value != null) { | ||
| valueRowBuilder.addColumns(String.valueOf(value)); | ||
| } else { | ||
| if (CollectorConstants.RESPONSE_TIME.equalsIgnoreCase(alias)) { | ||
| valueRowBuilder.addColumns(String.valueOf(responseTime)); | ||
| } else { | ||
| valueRowBuilder.addColumns(CommonConstants.NULL_VALUE); | ||
| } | ||
| } | ||
| } | ||
| builder.addValues(valueRowBuilder); | ||
| } | ||
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| private Map<String,Object> parsePop3Metrics(POP3Client pop3Client, List<String> aliasFields) throws IOException { | ||
| Map<String,Object> pop3Metrics = new HashMap<>(aliasFields.size()); | ||
| POP3MessageInfo status = pop3Client.status(); | ||
| int emailCount = 0; | ||
| double mailboxSize = 0.0; | ||
| if (status != null) { | ||
| emailCount = status.number; | ||
| // byte -> kb | ||
| mailboxSize = (double)status.size / 1024.0; | ||
| pop3Metrics.put(EMAIL_COUNT, emailCount); | ||
| pop3Metrics.put(MAILBOX_SIZE, mailboxSize); | ||
| } | ||
| return pop3Metrics; | ||
| } | ||
| } |
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47 changes: 47 additions & 0 deletions
47
common/src/main/java/org/dromara/hertzbeat/common/entity/job/protocol/Pop3Protocol.java
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,47 @@ | ||
| package org.dromara.hertzbeat.common.entity.job.protocol; | ||
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| import lombok.AllArgsConstructor; | ||
| import lombok.Builder; | ||
| import lombok.Data; | ||
| import lombok.NoArgsConstructor; | ||
| import org.apache.commons.lang3.StringUtils; | ||
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| @Data | ||
| @Builder | ||
| @AllArgsConstructor | ||
| @NoArgsConstructor | ||
| public class Pop3Protocol { | ||
| /** | ||
| * 接收服务器地址 | ||
| */ | ||
| private String host; | ||
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| /** | ||
| * 接收服务器端口 | ||
| */ | ||
| private String port; | ||
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| /** | ||
| * 超时时间 | ||
| */ | ||
| private String timeout; | ||
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| /** | ||
| * 是否开启SSL加密【邮箱传输】 | ||
| */ | ||
| private String ssl = "false"; | ||
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| /** | ||
| * pop邮箱地址 | ||
| */ | ||
| private String email; | ||
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| /** | ||
| * 授权码 | ||
| */ | ||
| private String authorize; | ||
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| public boolean isInvalid() { | ||
| return StringUtils.isAllBlank(host, port, timeout, ssl, email, authorize); | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,50 @@ | ||
| --- | ||
| id: pop3 | ||
| title: Monitoring POP3 | ||
| sidebar_label: POP3 Monitor | ||
| keywords: [open source monitoring tool, open source java monitoring tool, monitoring POP3 metrics] | ||
| --- | ||
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| > Collect and monitor the general performance Metrics of POP3. | ||
| **Protocol Use：POP3** | ||
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| ### Enable POP3 Service | ||
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| If you want to monitor information in 'POP3' with this monitoring type, you just need to open `POP3` service in your mail server. | ||
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| **1、Open `POP3` Service:** | ||
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| ```text | ||
| 以qq邮箱为例【其它邮箱类似】： | ||
| 1. 点击`设置`选项 | ||
| 2. 选择`账号` | ||
| 3. 找到开启SMTP/POP3/IMAP选项，并开启 | ||
| 4. 得到POP3服务器域名，端口号，以及授权码【开启SMTP/POP3/IMAP服务后，qq邮箱提供】 | ||
| 5. 通过POP3服务器域名，端口号，qq邮箱账号以及授权码连接POP3服务器，采集监控指标 | ||
| ``` | ||
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| ### Configuration parameter | ||
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| | Parameter name | Parameter help description | | ||
| |---------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | ||
| | Monitoring Host | Monitored IPV4, IPV6 or domain name. Note⚠️Without protocol header (eg: https://, http://) | | ||
| | Monitoring name | Identify the name of this monitoring. The name needs to be unique | | ||
| | Port | Port provided by POP3 | | ||
| | SSL | POP3 If enabled SSL | | ||
| | Timeout | Allow collection response time | | ||
| | Collection interval | Interval time of monitor periodic data collection, unit: second, and the minimum interval that can be set is 30 seconds | | ||
| | Whether to detect | Whether to detect and check the availability of monitoring before adding monitoring. Adding and modifying operations will continue only after the detection is successful | | ||
| | Description remarks | For more information about identifying and describing this monitoring, users can note information here | | ||
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| ### Collection Metrics | ||
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| #### Metrics Set：email_status | ||
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| | Metric name | Metric unit | Metric help description | | ||
| |--------------|-------------|------------------------------------------| | ||
| | email_count | | Number of emails | | ||
| | mailbox_size | kb | The total size of emails in the mailbox | | ||
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