C0urante commented on code in PR #13424:
URL: https://github.com/apache/kafka/pull/13424#discussion_r1149773408
##########
connect/runtime/src/test/java/org/apache/kafka/connect/integration/ConnectWorkerIntegrationTest.java:
##########
@@ -325,6 +325,181 @@ public void
testSourceTaskNotBlockedOnShutdownWithNonExistentTopic() throws Exce
assertTrue("Connector and all tasks were not stopped in time",
stopCounter.await(1, TimeUnit.MINUTES));
}
+ /**
+ * Verify that the target state (started, paused, stopped) of a connector
can be updated, with
+ * an emphasis on ensuring that the transitions between each state are
correct.
+ * <p>
+ * The transitions we need to cover are:
+ * <ol>
+ * <li>RUNNING -> PAUSED</li>
+ * <li>RUNNING -> STOPPED</li>
+ * <li>PAUSED -> RUNNING</li>
+ * <li>PAUSED -> STOPPED</li>
+ * <li>STOPPED -> RUNNING</li>
+ * <li>STOPPED -> PAUSED</li>
+ * </ol>
+ * With some reordering, we can perform each transition just once:
+ * <ul>
+ * <li>Start with RUNNING</li>
+ * <li>Transition to STOPPED (2)</li>
+ * <li>Transition to RUNNING (5)</li>
+ * <li>Transition to PAUSED (1)</li>
+ * <li>Transition to STOPPED (4)</li>
+ * <li>Transition to PAUSED (6)</li>
+ * <li>Transition to RUNNING (3)</li>
+ * </ul>
+ */
+ @Test
+ public void testPauseStopResume() throws Exception {
+ connect = connectBuilder.build();
+ // start the clusters
+ connect.start();
+
+ connect.assertions().assertAtLeastNumWorkersAreUp(NUM_WORKERS,
+ "Initial group of workers did not start in time.");
+
+ // Want to make sure to use multiple tasks
+ final int numTasks = 4;
+ Map<String, String> props = defaultSourceConnectorProps(TOPIC_NAME);
+ props.put(TASKS_MAX_CONFIG, Integer.toString(numTasks));
+
+ // Start with RUNNING
+ connect.configureConnector(CONNECTOR_NAME, props);
+ connect.assertions().assertConnectorAndExactlyNumTasksAreRunning(
+ CONNECTOR_NAME,
+ numTasks,
+ "Connector tasks did not start in time"
+ );
+
+ // Transition to STOPPED
+ connect.stopConnector(CONNECTOR_NAME);
+ // Issue a second request to ensure that this operation is idempotent
+ connect.stopConnector(CONNECTOR_NAME);
+ connect.assertions().assertConnectorIsStopped(
+ CONNECTOR_NAME,
+ "Connector did not stop in time"
+ );
+
+ // Transition to RUNNING
+ connect.resumeConnector(CONNECTOR_NAME);
+ // Issue a second request to ensure that this operation is idempotent
+ connect.resumeConnector(CONNECTOR_NAME);
+ connect.assertions().assertConnectorAndExactlyNumTasksAreRunning(
+ CONNECTOR_NAME,
+ numTasks,
+ "Connector tasks did not resume in time"
+ );
+
+ // Transition to PAUSED
+ connect.pauseConnector(CONNECTOR_NAME);
+ // Issue a second request to ensure that this operation is idempotent
+ connect.pauseConnector(CONNECTOR_NAME);
+ connect.assertions().assertConnectorAndExactlyNumTasksArePaused(
+ CONNECTOR_NAME,
+ numTasks,
+ "Connector did not pause in time"
+ );
+
+ // Transition to STOPPED
+ connect.stopConnector(CONNECTOR_NAME);
+ connect.assertions().assertConnectorIsStopped(
+ CONNECTOR_NAME,
+ "Connector did not stop in time"
+ );
+
+ // Transition to PAUSED
+ connect.pauseConnector(CONNECTOR_NAME);
+ connect.assertions().assertConnectorAndExactlyNumTasksArePaused(
+ CONNECTOR_NAME,
+ 0,
+ "Connector did not pause in time"
+ );
+
+ // Transition to RUNNING
+ connect.resumeConnector(CONNECTOR_NAME);
+ connect.assertions().assertConnectorAndExactlyNumTasksAreRunning(
+ CONNECTOR_NAME,
+ numTasks,
+ "Connector tasks did not resume in time"
+ );
+
+ // Delete the connector
+ connect.deleteConnector(CONNECTOR_NAME);
+ connect.assertions().assertConnectorAndTasksAreNotRunning(
Review Comment:
👍 Done!
https://issues.apache.org/jira/browse/KAFKA-14855
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