[source-mongodb-v2] : Fail sync if initial snapshot for any stream fa…

…ils (#34759)
airbytehq · Feb 5, 2024 · c7c51ea · c7c51ea
1 parent 247bc17
commit c7c51ea
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Showing 4 changed files with 25 additions and 9 deletions.
diff --git a/airbyte-integrations/connectors/source-mongodb-v2/metadata.yaml b/airbyte-integrations/connectors/source-mongodb-v2/metadata.yaml
@@ -5,7 +5,7 @@ data:
   connectorSubtype: database
   connectorType: source
   definitionId: b2e713cd-cc36-4c0a-b5bd-b47cb8a0561e
-  dockerImageTag: 1.2.6
+  dockerImageTag: 1.2.7
   dockerRepository: airbyte/source-mongodb-v2
   documentationUrl: https://docs.airbyte.com/integrations/sources/mongodb-v2
   githubIssueLabel: source-mongodb-v2

diff --git a/...mongodb-v2/src/main/java/io/airbyte/integrations/source/mongodb/MongoDbStateIterator.java b/...mongodb-v2/src/main/java/io/airbyte/integrations/source/mongodb/MongoDbStateIterator.java
@@ -69,10 +69,15 @@ public class MongoDbStateIterator implements Iterator<AirbyteMessage> {
   private boolean finalStateNext = false;
 
   /**
-   * Tracks if the underlying iterator threw an exception. This helps to determine the final state
-   * status emitted from the final next call.
+   * Tracks if the underlying iterator threw an exception, indicating that the snapshot for this
+   * stream failed. This helps to determine the final state status emitted from the final next call.
    */
-  private boolean iterThrewException = false;
+  private boolean initialSnapshotFailed = false;
+
+  /**
+   * Tracks the exception thrown if there initial snapshot has failed.
+   */
+  private Exception initialSnapshotException;
 
   /**
    * Constructor.
@@ -111,14 +116,24 @@ public MongoDbStateIterator(final MongoCursor<Document> iter,
   @Override
   public boolean hasNext() {
     LOGGER.debug("Checking hasNext() for stream {}...", getStream());
+    if (initialSnapshotFailed) {
+      // If the initial snapshot is incomplete for this stream, throw an exception failing the sync. This
+      // will ensure the platform retry logic
+      // kicks in and keeps retrying the sync until the initial snapshot is complete.
+      throw new RuntimeException(initialSnapshotException);
+    }
     try {
       if (iter.hasNext()) {
         return true;
       }
     } catch (final MongoException e) {
-      // If hasNext throws an exception, log it and then treat it as if hasNext returned false.
-      iterThrewException = true;
+      // If hasNext throws an exception, log it and set the flag to indicate that the initial snapshot
+      // failed. This indicates to the main iterator
+      // to emit state associated with what has been processed so far.
+      initialSnapshotFailed = true;
+      initialSnapshotException = e;
       LOGGER.info("hasNext threw an exception for stream {}: {}", getStream(), e.getMessage(), e);
+      return true;
     }
 
     // no more records in cursor + no record messages have been emitted => collection is empty
@@ -145,9 +160,9 @@ public AirbyteMessage next() {
     // Should a state message be emitted based on then last time a state message was emitted?
     final var emitStateDueToDuration = count > 0 && Duration.between(lastCheckpoint, Instant.now()).compareTo(checkpointDuration) > 0;
 
-    if (finalStateNext) {
+    if (finalStateNext || initialSnapshotFailed) {
       LOGGER.debug("Emitting final state status for stream {}:{}...", stream.getStream().getNamespace(), stream.getStream().getName());
-      final var finalStateStatus = iterThrewException ? InitialSnapshotStatus.IN_PROGRESS : InitialSnapshotStatus.COMPLETE;
+      final var finalStateStatus = initialSnapshotFailed ? InitialSnapshotStatus.IN_PROGRESS : InitialSnapshotStatus.COMPLETE;
       final var idType = IdType.findByJavaType(lastId.getClass().getSimpleName())
           .orElseThrow(() -> new ConfigErrorException("Unsupported _id type " + lastId.getClass().getSimpleName()));
       final var state = new MongoDbStreamState(lastId.toString(), finalStateStatus, idType);

diff --git a/...odb-v2/src/test/java/io/airbyte/integrations/source/mongodb/MongoDbStateIteratorTest.java b/...odb-v2/src/test/java/io/airbyte/integrations/source/mongodb/MongoDbStateIteratorTest.java
@@ -187,7 +187,7 @@ void treatHasNextExceptionAsFalse() {
         message.getState().getGlobal().getStreamStates().get(0).getStreamState().get("status").asText(),
         "state status should be in_progress");
 
-    assertFalse(iter.hasNext(), "should have no more records");
+    assertThrows(RuntimeException.class, iter::hasNext, "next iteration should throw exception to fail the sync");
   }
 
   @Test

diff --git a/docs/integrations/sources/mongodb-v2.md b/docs/integrations/sources/mongodb-v2.md
@@ -214,6 +214,7 @@ For more information regarding configuration parameters, please see [MongoDb Doc
 
 | Version | Date       | Pull Request                                             | Subject                                                                                                   |
 |:--------|:-----------|:---------------------------------------------------------|:----------------------------------------------------------------------------------------------------------|
+| 1.2.7   | 2024-02-01 | [34759](https://github.com/airbytehq/airbyte/pull/34759) | Fail sync if initial snapshot for any stream fails.                                                       |
 | 1.2.6   | 2024-01-31 | [34594](https://github.com/airbytehq/airbyte/pull/34594) | Scope initial resume token to streams of interest.                                                        |
 | 1.2.5   | 2024-01-29 | [34641](https://github.com/airbytehq/airbyte/pull/34641) | Allow resuming an initial snapshot when Id type is not of default ObjectId .                              |
 | 1.2.4   | 2024-01-26 | [34573](https://github.com/airbytehq/airbyte/pull/34573) | Adopt CDK v0.16.0.                                                                                        |