fix(avroseralizer): Parse microseconds at any precision between 0 and 6

.gitignore

@@ -25,9 +25,11 @@ client/build
 ### Ide ###
 .idea/*
 .vscode/*
-.project/*
+.classpath*
+.project*
 .settings/*
 out/*
+bin/*
 
 ### Log ###
 .*.log

src/main/java/org/akhq/utils/AvroSerializer.java

@@ -15,7 +15,9 @@
 import java.nio.ByteBuffer;
 import java.time.*;
 import java.time.format.DateTimeFormatter;
+import java.time.format.DateTimeFormatterBuilder;
 import java.time.format.DateTimeParseException;
+import java.time.temporal.ChronoField;
 import java.util.AbstractMap;
 import java.util.Collection;
 import java.util.Map;
@@ -41,7 +43,12 @@ public class AvroSerializer {
 
     protected static final String DATE_FORMAT = "yyyy-MM-dd[XXX]";
     protected static final String TIME_FORMAT = "HH:mm[:ss][.SSSSSS][XXX]";
-    protected static final String DATETIME_FORMAT = "yyyy-MM-dd'T'HH:mm[:ss][.SSSSSS][XXX]";
+    protected static final DateTimeFormatter DATETIME_FORMAT = new DateTimeFormatterBuilder()
+            .append(DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm"))
+            .appendOptional(DateTimeFormatter.ofPattern(":ss"))
+            .appendFraction(ChronoField.MICRO_OF_SECOND, 0, 6, true)
+            .appendOptional(DateTimeFormatter.ofPattern("XXX"))
+            .toFormatter();
 
     public static GenericRecord recordSerializer(Map<String, ?> record, Schema schema) {
         GenericRecord returnValue = new GenericData.Record(schema);
@@ -199,13 +206,9 @@ private static Long timestampMillisSerializer(Object data, Schema schema, Schema
 
     protected static Instant parseDateTime(String data) {
         try {
-            return ZonedDateTime.parse(data, DateTimeFormatter.ofPattern(AvroSerializer.DATETIME_FORMAT)).toInstant();
+            return ZonedDateTime.parse(data, DATETIME_FORMAT).toInstant();
         } catch (DateTimeParseException e) {
-            LocalDateTime localDateTime = LocalDateTime.parse(
-                data,
-                DateTimeFormatter.ofPattern(AvroSerializer.DATETIME_FORMAT)
-            );
-
+            LocalDateTime localDateTime = LocalDateTime.parse(data, DATETIME_FORMAT);
             return localDateTime.atZone(ZoneId.systemDefault()).toInstant();
         }
     }

src/test/java/org/akhq/utils/AvroSerializerTest.java

@@ -0,0 +1,106 @@
+package org.akhq.utils;
+
+import org.junit.jupiter.api.Nested;
+import org.junit.jupiter.api.Test;
+
+import java.time.Instant;
+import java.time.LocalDateTime;
+import java.time.ZoneId;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+class AvroSerializerTest {
+
+    @Nested
+    static class ParseDateTime {
+
+        @Nested
+        static class Utc {
+
+            @Test
+            void testParseDateTime_micros_utc() {
+                assertEquals(AvroSerializer.parseDateTime("2021-07-16T21:30:12.345678Z"),
+                        Instant.parse("2021-07-16T21:30:12.345678Z"));
+            }
+
+            @Test
+            void testParseDateTime_millis_utc() {
+                assertEquals(AvroSerializer.parseDateTime("2021-07-16T21:30:12.345Z"),
+                        Instant.parse("2021-07-16T21:30:12.345Z"));
+            }
+
+            @Test
+            void testParseDateTime_seconds_utc() {
+                assertEquals(AvroSerializer.parseDateTime("2021-07-16T21:30:12Z"),
+                        Instant.parse("2021-07-16T21:30:12Z"));
+            }
+
+            @Test
+            void testParseDateTime_minutes_utc() {
+                assertEquals(AvroSerializer.parseDateTime("2021-07-16T21:30Z"),
+                        Instant.parse("2021-07-16T21:30:00Z"));
+            }
+
+        }
+
+        @Nested
+        static class Offset {
+
+            @Test
+            void testParseDateTime_micros_offset() {
+                assertEquals(AvroSerializer.parseDateTime("2021-07-16T21:30:12.345678+08:00"),
+                        Instant.parse("2021-07-16T13:30:12.345678Z"));
+            }
+
+            @Test
+            void testParseDateTime_millis_offset() {
+                assertEquals(AvroSerializer.parseDateTime("2021-07-16T21:30:12.345+08:00"),
+                        Instant.parse("2021-07-16T13:30:12.345Z"));
+            }
+
+            @Test
+            void testParseDateTime_seconds_offset() {
+                assertEquals(AvroSerializer.parseDateTime("2021-07-16T21:30:12+08:00"),
+                        Instant.parse("2021-07-16T13:30:12Z"));
+            }
+
+            @Test
+            void testParseDateTime_minutes_offset() {
+                assertEquals(AvroSerializer.parseDateTime("2021-07-16T21:30+08:00"),
+                        Instant.parse("2021-07-16T13:30:00Z"));
+            }
+
+        }
+
+        @Nested
+        static class Local {
+
+            @Test
+            void testParseDateTime_micros_local() {
+                assertEquals(AvroSerializer.parseDateTime("2021-07-16T21:30:12.345678"),
+                        LocalDateTime.parse("2021-07-16T21:30:12.345678").atZone(ZoneId.systemDefault()).toInstant());
+            }
+
+            @Test
+            void testParseDateTime_millis_local() {
+                assertEquals(AvroSerializer.parseDateTime("2021-07-16T21:30:12.345"),
+                        LocalDateTime.parse("2021-07-16T21:30:12.345").atZone(ZoneId.systemDefault()).toInstant());
+            }
+
+            @Test
+            void testParseDateTime_seconds_local() {
+                assertEquals(AvroSerializer.parseDateTime("2021-07-16T21:30:12"),
+                        LocalDateTime.parse("2021-07-16T21:30:12").atZone(ZoneId.systemDefault()).toInstant());
+            }
+
+            @Test
+            void testParseDateTime_minutes_local() {
+                assertEquals(AvroSerializer.parseDateTime("2021-07-16T21:30"),
+                        LocalDateTime.parse("2021-07-16T21:30").atZone(ZoneId.systemDefault()).toInstant());
+            }
+
+        }
+
+    }
+
+}