IBasicBolt.java

// Copyright 2016 Twitter. All rights reserved.
//
// Licensed 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 com.twitter.heron.api.bolt;

import java.util.Map;

import com.twitter.heron.api.topology.IComponent;
import com.twitter.heron.api.topology.TopologyContext;
import com.twitter.heron.api.tuple.Tuple;

public interface IBasicBolt extends IComponent {
  void prepare(Map<String, Object> heronConf, TopologyContext context);

  /**
   * Process the input tuple and optionally emit new tuples based on the input tuple.
   * <p>
   * All acking is managed for you. Throw a FailedException if you want to fail the tuple.
   */
  void execute(Tuple input, BasicOutputCollector collector);

  void cleanup();
}