Migrating from joda to java.time. Watcher plugin (#35809)

part of the migrating joda time work. Migrating watcher plugin to use JDK's java-time

refers #27330

Author: pgomulka

client/rest-high-level/src/main/java/org/elasticsearch/client/watcher/ActionStatus.java

@@ -23,10 +23,10 @@
 import org.elasticsearch.common.Nullable;
 import org.elasticsearch.common.ParseField;
 import org.elasticsearch.common.xcontent.XContentParser;
-import org.joda.time.DateTime;
-import org.joda.time.DateTimeZone;
 
 import java.io.IOException;
+import java.time.ZoneOffset;
+import java.time.ZonedDateTime;
 import java.util.Locale;
 import java.util.Objects;
 
@@ -119,15 +119,16 @@ public enum State {
             ACKED;
         }
 
-        private final DateTime timestamp;
+        private final ZonedDateTime timestamp;
         private final State state;
 
-        public AckStatus(DateTime timestamp, State state) {
-            this.timestamp = timestamp.toDateTime(DateTimeZone.UTC);
+        public AckStatus(ZonedDateTime timestamp, State state) {
+            assert timestamp.getOffset() == ZoneOffset.UTC;
+            this.timestamp = timestamp;
             this.state = state;
         }
 
-        public DateTime timestamp() {
+        public ZonedDateTime timestamp() {
             return timestamp;
         }
 
@@ -151,7 +152,7 @@ public int hashCode() {
         }
 
         public static AckStatus parse(String actionId, XContentParser parser) throws IOException {
-            DateTime timestamp = null;
+            ZonedDateTime timestamp = null;
             State state = null;
 
             String currentFieldName = null;
@@ -181,25 +182,25 @@ public static AckStatus parse(String actionId, XContentParser parser) throws IOE
 
     public static class Execution {
 
-        public static Execution successful(DateTime timestamp) {
+        public static Execution successful(ZonedDateTime timestamp) {
             return new Execution(timestamp, true, null);
         }
 
-        public static Execution failure(DateTime timestamp, String reason) {
+        public static Execution failure(ZonedDateTime timestamp, String reason) {
             return new Execution(timestamp, false, reason);
         }
 
-        private final DateTime timestamp;
+        private final ZonedDateTime timestamp;
         private final boolean successful;
         private final String reason;
 
-        private Execution(DateTime timestamp, boolean successful, String reason) {
-            this.timestamp = timestamp.toDateTime(DateTimeZone.UTC);
+        private Execution(ZonedDateTime timestamp, boolean successful, String reason) {
+            this.timestamp = timestamp.withZoneSameInstant(ZoneOffset.UTC);
             this.successful = successful;
             this.reason = reason;
         }
 
-        public DateTime timestamp() {
+        public ZonedDateTime timestamp() {
             return timestamp;
         }
 
@@ -229,7 +230,7 @@ public int hashCode() {
         }
 
         public static Execution parse(String actionId, XContentParser parser) throws IOException {
-            DateTime timestamp = null;
+            ZonedDateTime timestamp = null;
             Boolean successful = null;
             String reason = null;
 
@@ -269,15 +270,15 @@ public static Execution parse(String actionId, XContentParser parser) throws IOE
 
     public static class Throttle {
 
-        private final DateTime timestamp;
+        private final ZonedDateTime timestamp;
         private final String reason;
 
-        public Throttle(DateTime timestamp, String reason) {
-            this.timestamp = timestamp.toDateTime(DateTimeZone.UTC);
+        public Throttle(ZonedDateTime timestamp, String reason) {
+            this.timestamp = timestamp.withZoneSameInstant(ZoneOffset.UTC);
             this.reason = reason;
         }
 
-        public DateTime timestamp() {
+        public ZonedDateTime timestamp() {
             return timestamp;
         }
 
@@ -300,7 +301,7 @@ public int hashCode() {
         }
 
         public static Throttle parse(String actionId, XContentParser parser) throws IOException {
-            DateTime timestamp = null;
+            ZonedDateTime timestamp = null;
             String reason = null;
 
             String currentFieldName = null;

client/rest-high-level/src/main/java/org/elasticsearch/client/watcher/WatchStatus.java

@@ -23,9 +23,10 @@
 import org.elasticsearch.common.Nullable;
 import org.elasticsearch.common.ParseField;
 import org.elasticsearch.common.xcontent.XContentParser;
-import org.joda.time.DateTime;
 
 import java.io.IOException;
+import java.time.ZoneOffset;
+import java.time.ZonedDateTime;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.Map;
@@ -35,24 +36,23 @@
 import static java.util.Collections.unmodifiableMap;
 import static org.elasticsearch.client.watcher.WatchStatusDateParser.parseDate;
 import static org.elasticsearch.common.xcontent.XContentParserUtils.ensureExpectedToken;
-import static org.joda.time.DateTimeZone.UTC;
 
 public class WatchStatus {
 
     private final State state;
 
     private final ExecutionState executionState;
-    private final DateTime lastChecked;
-    private final DateTime lastMetCondition;
+    private final ZonedDateTime lastChecked;
+    private final ZonedDateTime lastMetCondition;
     private final long version;
     private final Map<String, ActionStatus> actions;
     @Nullable private Map<String, String> headers;
 
     public WatchStatus(long version,
                        State state,
                        ExecutionState executionState,
-                       DateTime lastChecked,
-                       DateTime lastMetCondition,
+                       ZonedDateTime lastChecked,
+                       ZonedDateTime lastMetCondition,
                        Map<String, ActionStatus> actions,
                        Map<String, String> headers) {
         this.version = version;
@@ -72,11 +72,11 @@ public boolean checked() {
         return lastChecked != null;
     }
 
-    public DateTime lastChecked() {
+    public ZonedDateTime lastChecked() {
         return lastChecked;
     }
 
-    public DateTime lastMetCondition() {
+    public ZonedDateTime lastMetCondition() {
         return lastMetCondition;
     }
 
@@ -123,8 +123,8 @@ public int hashCode() {
     public static WatchStatus parse(XContentParser parser) throws IOException {
         State state = null;
         ExecutionState executionState = null;
-        DateTime lastChecked = null;
-        DateTime lastMetCondition = null;
+        ZonedDateTime lastChecked = null;
+        ZonedDateTime lastMetCondition = null;
         Map<String, ActionStatus> actions = null;
         Map<String, String> headers = Collections.emptyMap();
         long version = -1;
@@ -203,9 +203,9 @@ public static WatchStatus parse(XContentParser parser) throws IOException {
     public static class State {
 
         private final boolean active;
-        private final DateTime timestamp;
+        private final ZonedDateTime timestamp;
 
-        public State(boolean active, DateTime timestamp) {
+        public State(boolean active, ZonedDateTime timestamp) {
             this.active = active;
             this.timestamp = timestamp;
         }
@@ -214,7 +214,7 @@ public boolean isActive() {
             return active;
         }
 
-        public DateTime getTimestamp() {
+        public ZonedDateTime getTimestamp() {
             return timestamp;
         }
 
@@ -223,7 +223,7 @@ public static State parse(XContentParser parser) throws IOException {
                 throw new ElasticsearchParseException("expected an object but found [{}] instead", parser.currentToken());
             }
             boolean active = true;
-            DateTime timestamp = DateTime.now(UTC);
+            ZonedDateTime timestamp = ZonedDateTime.now(ZoneOffset.UTC);
             String currentFieldName = null;
             XContentParser.Token token;
             while ((token = parser.nextToken()) != XContentParser.Token.END_OBJECT) {

client/rest-high-level/src/main/java/org/elasticsearch/client/watcher/WatchStatusDateParser.java

@@ -21,12 +21,14 @@
 
 import org.elasticsearch.ElasticsearchParseException;
 import org.elasticsearch.common.time.DateFormatter;
+import org.elasticsearch.common.time.DateFormatters;
 import org.elasticsearch.common.xcontent.XContentParser;
 import org.elasticsearch.index.mapper.DateFieldMapper;
-import org.joda.time.DateTime;
-import org.joda.time.DateTimeZone;
 
 import java.io.IOException;
+import java.time.Instant;
+import java.time.ZoneOffset;
+import java.time.ZonedDateTime;
 
 public final class WatchStatusDateParser {
 
@@ -36,14 +38,14 @@ private WatchStatusDateParser() {
         // Prevent instantiation.
     }
 
-    public static DateTime parseDate(String fieldName, XContentParser parser) throws IOException {
+    public static ZonedDateTime parseDate(String fieldName, XContentParser parser) throws IOException {
         XContentParser.Token token = parser.currentToken();
         if (token == XContentParser.Token.VALUE_NUMBER) {
-            return new DateTime(parser.longValue(), DateTimeZone.UTC);
+            return Instant.ofEpochMilli(parser.longValue()).atZone(ZoneOffset.UTC);
         }
         if (token == XContentParser.Token.VALUE_STRING) {
-            DateTime dateTime = parseDate(parser.text());
-            return dateTime.toDateTime(DateTimeZone.UTC);
+            ZonedDateTime dateTime = parseDate(parser.text());
+            return dateTime.withZoneSameInstant(ZoneOffset.UTC);
         }
         if (token == XContentParser.Token.VALUE_NULL) {
             return null;
@@ -52,7 +54,7 @@ public static DateTime parseDate(String fieldName, XContentParser parser) throws
             "to be either a number or a string but found [{}] instead", fieldName, token);
     }
 
-    public static DateTime parseDate(String text) {
-        return FORMATTER.parseJoda(text);
+    public static ZonedDateTime parseDate(String text) {
+        return DateFormatters.from(FORMATTER.parse(text));
     }
 }

client/rest-high-level/src/test/java/org/elasticsearch/client/watcher/WatchStatusTests.java

@@ -27,10 +27,11 @@
 import org.elasticsearch.common.xcontent.XContentType;
 import org.elasticsearch.test.ESTestCase;
 import org.elasticsearch.test.XContentTestUtils;
-import org.joda.time.DateTime;
-import org.joda.time.DateTimeZone;
 
 import java.io.IOException;
+import java.time.Instant;
+import java.time.ZoneOffset;
+import java.time.ZonedDateTime;
 import java.util.function.Predicate;
 
 public class WatchStatusTests extends ESTestCase {
@@ -50,32 +51,32 @@ public void testBasicParsing() throws IOException {
         assertEquals(expectedVersion, watchStatus.version());
         assertEquals(expectedExecutionState, watchStatus.getExecutionState());
 
-        assertEquals(new DateTime(1432663467763L, DateTimeZone.UTC), watchStatus.lastChecked());
-        assertEquals(DateTime.parse("2015-05-26T18:04:27.763Z"), watchStatus.lastMetCondition());
+        assertEquals(Instant.ofEpochMilli(1432663467763L).atZone(ZoneOffset.UTC), watchStatus.lastChecked());
+        assertEquals(ZonedDateTime.parse("2015-05-26T18:04:27.763Z"), watchStatus.lastMetCondition());
 
         WatchStatus.State watchState = watchStatus.state();
         assertEquals(expectedActive, watchState.isActive());
-        assertEquals(DateTime.parse("2015-05-26T18:04:27.723Z"), watchState.getTimestamp());
+        assertEquals(ZonedDateTime.parse("2015-05-26T18:04:27.723Z"), watchState.getTimestamp());
 
         ActionStatus actionStatus = watchStatus.actionStatus("test_index");
         assertNotNull(actionStatus);
 
         ActionStatus.AckStatus ackStatus = actionStatus.ackStatus();
-        assertEquals(DateTime.parse("2015-05-26T18:04:27.763Z"), ackStatus.timestamp());
+        assertEquals(ZonedDateTime.parse("2015-05-26T18:04:27.763Z"), ackStatus.timestamp());
         assertEquals(expectedAckState, ackStatus.state());
 
         ActionStatus.Execution lastExecution = actionStatus.lastExecution();
-        assertEquals(DateTime.parse("2015-05-25T18:04:27.733Z"), lastExecution.timestamp());
+        assertEquals(ZonedDateTime.parse("2015-05-25T18:04:27.733Z"), lastExecution.timestamp());
         assertFalse(lastExecution.successful());
         assertEquals("failed to send email", lastExecution.reason());
 
         ActionStatus.Execution lastSuccessfulExecution = actionStatus.lastSuccessfulExecution();
-        assertEquals(DateTime.parse("2015-05-25T18:04:27.773Z"), lastSuccessfulExecution.timestamp());
+        assertEquals(ZonedDateTime.parse("2015-05-25T18:04:27.773Z"), lastSuccessfulExecution.timestamp());
         assertTrue(lastSuccessfulExecution.successful());
         assertNull(lastSuccessfulExecution.reason());
 
         ActionStatus.Throttle lastThrottle = actionStatus.lastThrottle();
-        assertEquals(DateTime.parse("2015-04-25T18:05:23.445Z"), lastThrottle.timestamp());
+        assertEquals(ZonedDateTime.parse("2015-04-25T18:05:23.445Z"), lastThrottle.timestamp());
         assertEquals("throttling interval is set to [5 seconds] ...", lastThrottle.reason());
     }
 

server/src/test/java/org/elasticsearch/common/time/DateFormattersTests.java

@@ -204,6 +204,7 @@ public void testRoundupFormatterWithEpochDates() {
         assertRoundupFormatter("strict_date_optional_time||epoch_millis", "2018-10-10T12:13:14.123Z", 1539173594123L);
         assertRoundupFormatter("strict_date_optional_time||epoch_millis", "1234567890", 1234567890L);
         assertRoundupFormatter("strict_date_optional_time||epoch_millis", "2018-10-10", 1539215999999L);
+        assertRoundupFormatter("strict_date_optional_time||epoch_millis", "2019-01-25T15:37:17.346928Z", 1548430637346L);
         assertRoundupFormatter("uuuu-MM-dd'T'HH:mm:ss.SSS||epoch_millis", "2018-10-10T12:13:14.123", 1539173594123L);
         assertRoundupFormatter("uuuu-MM-dd'T'HH:mm:ss.SSS||epoch_millis", "1234567890", 1234567890L);