storm-compatibility/v2.2.0/src/java/org/apache/storm/task/IOutputCollector.java

/**
 * 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.storm.task;

import java.util.Collection;
import java.util.List;

import org.apache.storm.tuple.Tuple;

public interface IOutputCollector extends IErrorReporter {
  /**
   * Returns the task ids that received the tuples.
   */
  List<Integer> emit(String streamId, Collection<Tuple> anchors, List<Object> tuple);

  void emitDirect(int taskId, String streamId, Collection<Tuple> anchors, List<Object> tuple);

  void ack(Tuple input);

  void fail(Tuple input);
}