content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements. See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You under the Apache License, Version 2.0
   * (the "License"); you may not use this file except in compliance with
   * the License. You may obtain a copy of the License at
   *
   *    http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.apache.kafka.connect.runtime;
  
  import org.apache.kafka.common.utils.LogCaptureAppender;
  import org.apache.kafka.common.utils.ThreadUtils;
  import org.apache.kafka.connect.errors.ConnectException;
  import org.apache.kafka.connect.runtime.standalone.StandaloneConfig;
  import org.apache.kafka.connect.util.ConnectorTaskId;
  
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  import org.junit.jupiter.api.extension.ExtendWith;
  import org.mockito.ArgumentCaptor;
  import org.mockito.Mock;
  import org.mockito.junit.jupiter.MockitoExtension;
  import org.mockito.junit.jupiter.MockitoSettings;
  import org.mockito.quality.Strictness;
  
  import java.util.HashMap;
  import java.util.Map;
  import java.util.concurrent.CancellationException;
  import java.util.concurrent.ConcurrentHashMap;
  import java.util.concurrent.ExecutionException;
  import java.util.concurrent.ScheduledExecutorService;
  import java.util.concurrent.ScheduledFuture;
  import java.util.concurrent.TimeUnit;
  
  import static java.util.Collections.singletonMap;
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertNotNull;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  import static org.mockito.ArgumentMatchers.eq;
  import static org.mockito.Mockito.verify;
  import static org.mockito.Mockito.when;
  
  @ExtendWith(MockitoExtension.class)
  @MockitoSettings(strictness = Strictness.STRICT_STUBS)
  public class SourceTaskOffsetCommitterTest {
  
      private final ConcurrentHashMap<ConnectorTaskId, ScheduledFuture<?>> committers = new ConcurrentHashMap<>();
  
      @Mock
      private ScheduledExecutorService executor;
      @Mock
      private ScheduledFuture<?> commitFuture;
      @Mock
      private ScheduledFuture<?> taskFuture;
      @Mock
      private ConnectorTaskId taskId;
      @Mock
      private WorkerSourceTask task;
  
      private SourceTaskOffsetCommitter committer;
  
      private static final long DEFAULT_OFFSET_COMMIT_INTERVAL_MS = 1000;
  
      @BeforeEach
      public void setup() {
          Map<String, String> workerProps = new HashMap<>();
          workerProps.put("key.converter", "org.apache.kafka.connect.json.JsonConverter");
          workerProps.put("value.converter", "org.apache.kafka.connect.json.JsonConverter");
          workerProps.put("offset.storage.file.filename", "/tmp/connect.offsets");
          workerProps.put("offset.flush.interval.ms",
                  Long.toString(DEFAULT_OFFSET_COMMIT_INTERVAL_MS));
          WorkerConfig config = new StandaloneConfig(workerProps);
          committer = new SourceTaskOffsetCommitter(config, executor, committers);
      }
  
      @SuppressWarnings("unchecked")
      @Test
      public void testSchedule() {
          ArgumentCaptor<Runnable> taskWrapper = ArgumentCaptor.forClass(Runnable.class);
  
          when(executor.scheduleWithFixedDelay(
                  taskWrapper.capture(), eq(DEFAULT_OFFSET_COMMIT_INTERVAL_MS),
                  eq(DEFAULT_OFFSET_COMMIT_INTERVAL_MS), eq(TimeUnit.MILLISECONDS))
          ).thenReturn((ScheduledFuture) commitFuture);
  
          committer.schedule(taskId, task);
          assertNotNull(taskWrapper.getValue());
          assertEquals(singletonMap(taskId, commitFuture), committers);
      }
  
      @Test
      public void testCloseTimeout() throws Exception {
          long timeoutMs = 1000;
  
          // Normal termination, where termination times out.
          when(executor.awaitTermination(timeoutMs, TimeUnit.MILLISECONDS)).thenReturn(false);
  
          try (LogCaptureAppender logCaptureAppender = LogCaptureAppender.createAndRegister(ThreadUtils.class)) {
              committer.close(timeoutMs);
              assertTrue(logCaptureAppender.getEvents().stream().anyMatch(e -> e.getLevel().equals("ERROR")));
          }
  
          verify(executor).shutdown();
      }
  
      @Test
      public void testCloseInterrupted() throws InterruptedException {
          long timeoutMs = 1000;
  
          // Termination interrupted
          when(executor.awaitTermination(timeoutMs, TimeUnit.MILLISECONDS)).thenThrow(new InterruptedException());
  
          committer.close(timeoutMs);
  
          verify(executor).shutdown();
      }
  
      @Test
      public void testRemoveNonExistentTask() {
          assertTrue(committers.isEmpty());
          committer.remove(taskId);
          assertTrue(committers.isEmpty());
      }
  
      @Test
      public void testRemoveSuccess() {
          expectRemove();
          committers.put(taskId, taskFuture);
          committer.remove(taskId);
          assertTrue(committers.isEmpty());
      }
  
      @Test
      public void testRemoveCancelledTask() throws ExecutionException, InterruptedException {
          expectRemove();
          when(taskFuture.get()).thenThrow(new CancellationException());
  
          committers.put(taskId, taskFuture);
          try (LogCaptureAppender logCaptureAppender = LogCaptureAppender.createAndRegister(SourceTaskOffsetCommitter.class)) {
              logCaptureAppender.setClassLogger(SourceTaskOffsetCommitter.class, org.apache.logging.log4j.Level.TRACE);
              committer.remove(taskId);
              assertTrue(logCaptureAppender.getEvents().stream().anyMatch(e -> e.getLevel().equals("TRACE")));
          }
          assertTrue(committers.isEmpty());
      }
  
      @Test
      public void testRemoveTaskAndInterrupted() throws ExecutionException, InterruptedException {
          expectRemove();
          when(taskFuture.get()).thenThrow(new InterruptedException());
  
          committers.put(taskId, taskFuture);
          assertThrows(ConnectException.class, () -> committer.remove(taskId));
      }
  
      private void expectRemove() {
          when(taskFuture.cancel(false)).thenReturn(false);
          when(taskFuture.isDone()).thenReturn(false);
          when(taskId.connector()).thenReturn("MyConnector");
          when(taskId.task()).thenReturn(1);
      }
  
  }
  