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.clients.consumer.Consumer;
  import org.apache.kafka.common.TopicPartition;
  import org.apache.kafka.common.metrics.PluginMetrics;
  import org.apache.kafka.connect.errors.IllegalWorkerStateException;
  import org.apache.kafka.connect.sink.ErrantRecordReporter;
  import org.apache.kafka.connect.sink.SinkTaskContext;
  import org.apache.kafka.connect.storage.ClusterConfigState;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import java.util.Arrays;
  import java.util.Collections;
  import java.util.HashMap;
  import java.util.HashSet;
  import java.util.Map;
  import java.util.Set;
  
  public class WorkerSinkTaskContext implements SinkTaskContext {
  
      private static final Logger log = LoggerFactory.getLogger(WorkerSinkTaskContext.class);
      private final Map<TopicPartition, Long> offsets;
      private final Consumer<byte[], byte[]> consumer;
      private final WorkerSinkTask sinkTask;
      private final ClusterConfigState configState;
      private final Set<TopicPartition> pausedPartitions;
      private long timeoutMs;
      private boolean commitRequested;
  
      public WorkerSinkTaskContext(Consumer<byte[], byte[]> consumer,
                                   WorkerSinkTask sinkTask,
                                   ClusterConfigState configState) {
          this.offsets = new HashMap<>();
          this.timeoutMs = -1L;
          this.consumer = consumer;
          this.sinkTask = sinkTask;
          this.configState = configState;
          this.pausedPartitions = new HashSet<>();
      }
  
      @Override
      public Map<String, String> configs() {
          return configState.taskConfig(sinkTask.id());
      }
  
      @Override
      public void offset(Map<TopicPartition, Long> offsets) {
          log.debug("{} Setting offsets for topic partitions {}", this, offsets);
          this.offsets.putAll(offsets);
      }
  
      @Override
      public void offset(TopicPartition tp, long offset) {
          log.debug("{} Setting offset for topic partition {} to {}", this, tp, offset);
          offsets.put(tp, offset);
      }
  
      public void clearOffsets() {
          offsets.clear();
      }
  
      /**
       * Get offsets that the SinkTask has submitted to be reset. Used by the Kafka Connect framework.
       * @return the map of offsets
       */
      public Map<TopicPartition, Long> offsets() {
          return offsets;
      }
  
      @Override
      public void timeout(long timeoutMs) {
          log.debug("{} Setting timeout to {} ms", this, timeoutMs);
          this.timeoutMs = timeoutMs;
      }
  
      /**
       * Get the timeout in milliseconds set by SinkTasks. Used by the Kafka Connect framework.
       * @return the backoff timeout in milliseconds.
       */
      public long timeout() {
          return timeoutMs;
      }
  
      @Override
      public Set<TopicPartition> assignment() {
          if (consumer == null) {
              throw new IllegalWorkerStateException("SinkTaskContext may not be used to look up partition assignment until the task is initialized");
          }
          return consumer.assignment();
      }
  
      @Override
      public void pause(TopicPartition... partitions) {
          if (consumer == null) {
              throw new IllegalWorkerStateException("SinkTaskContext may not be used to pause consumption until the task is initialized");
          }
          try {
              Collections.addAll(pausedPartitions, partitions);
              if (sinkTask.shouldPause()) {
                  log.debug("{} Connector is paused, so not pausing consumer's partitions {}", this, partitions);
              } else {
                  consumer.pause(Arrays.asList(partitions));
                  log.debug("{} Pausing partitions {}. Connector is not paused.", this, partitions);
              }
          } catch (IllegalStateException e) {
              throw new IllegalWorkerStateException("SinkTasks may not pause partitions that are not currently assigned to them.", e);
          }
      }
  
      @Override
      public void resume(TopicPartition... partitions) {
          if (consumer == null) {
              throw new IllegalWorkerStateException("SinkTaskContext may not be used to resume consumption until the task is initialized");
          }
          try {
              pausedPartitions.removeAll(Arrays.asList(partitions));
              if (sinkTask.shouldPause()) {
                  log.debug("{} Connector is paused, so not resuming consumer's partitions {}", this, partitions);
              } else {
                  consumer.resume(Arrays.asList(partitions));
                  log.debug("{} Resuming partitions: {}", this, partitions);
              }
          } catch (IllegalStateException e) {
              throw new IllegalWorkerStateException("SinkTasks may not resume partitions that are not currently assigned to them.", e);
          }
      }
  
      public Set<TopicPartition> pausedPartitions() {
          return pausedPartitions;
      }
  
      @Override
      public void requestCommit() {
          log.debug("{} Requesting commit", this);
          commitRequested = true;
      }
  
      public boolean isCommitRequested() {
          return commitRequested;
      }
  
      public void clearCommitRequest() {
          commitRequested = false;
      }
  
      @Override
      public ErrantRecordReporter errantRecordReporter() {
          return sinkTask.workerErrantRecordReporter();
      }
  
      @Override
      public PluginMetrics pluginMetrics() {
          return sinkTask.pluginMetrics();
      }
  
      @Override
      public String toString() {
          return "WorkerSinkTaskContext{" +
                 "id=" + sinkTask.id +
                 '}';
      }
  }
  