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.tools;
  
  import org.apache.kafka.common.utils.AppInfoParser;
  import org.apache.kafka.connect.source.SourceRecord;
  import org.apache.kafka.connect.source.SourceTask;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import java.util.Collections;
  import java.util.List;
  import java.util.Map;
  
  /**
   * Task implementation for {@link MockSourceConnector}.
   */
  public class MockSourceTask extends SourceTask {
      private static final Logger log = LoggerFactory.getLogger(MockSourceTask.class);
  
      private String mockMode;
      private long startTimeMs;
      private long failureDelayMs;
  
      @Override
      public String version() {
          return AppInfoParser.getVersion();
      }
  
      @Override
      public void start(Map<String, String> config) {
          this.mockMode = config.get(MockConnector.MOCK_MODE_KEY);
  
          if (MockConnector.TASK_FAILURE.equals(mockMode)) {
              this.startTimeMs = System.currentTimeMillis();
  
              String delayMsString = config.get(MockConnector.DELAY_MS_KEY);
              this.failureDelayMs = MockConnector.DEFAULT_FAILURE_DELAY_MS;
              if (delayMsString != null)
                  failureDelayMs = Long.parseLong(delayMsString);
  
              log.debug("Started MockSourceTask at {} with failure scheduled in {} ms", startTimeMs, failureDelayMs);
          }
      }
  
      @Override
      public List<SourceRecord> poll() {
          if (MockConnector.TASK_FAILURE.equals(mockMode)) {
              long now = System.currentTimeMillis();
              if (now - startTimeMs > failureDelayMs) {
                  log.debug("Triggering source task failure");
                  throw new RuntimeException();
              }
          }
          return Collections.emptyList();
      }
  
      @Override
      public void stop() {
  
      }
  }
  