| /** |
| * 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.tuple; |
| |
| import org.apache.storm.Constants; |
| import org.apache.storm.task.GeneralTopologyContext; |
| |
| /** |
| * A Tuple that is addressed to a destination. |
| */ |
| public final class AddressedTuple { |
| /** |
| * Destination used when broadcasting a tuple. |
| */ |
| public static final int BROADCAST_DEST = -2; |
| public final Tuple tuple; |
| public final int dest; |
| |
| public AddressedTuple(int dest, Tuple tuple) { |
| this.dest = dest; |
| this.tuple = tuple; |
| } |
| |
| public static AddressedTuple createFlushTuple(GeneralTopologyContext workerTopologyContext) { |
| TupleImpl tuple = new TupleImpl(workerTopologyContext, new Values(), Constants.SYSTEM_COMPONENT_ID, |
| (int) Constants.SYSTEM_TASK_ID, Constants.SYSTEM_FLUSH_STREAM_ID); |
| return new AddressedTuple(AddressedTuple.BROADCAST_DEST, tuple); // one instance per executor avoids false sharing of CPU cache |
| } |
| |
| public Tuple getTuple() { |
| return tuple; |
| } |
| |
| public int getDest() { |
| return dest; |
| } |
| |
| @Override |
| public String toString() { |
| return "[dest: " + dest + " tuple: " + tuple + "]"; |
| } |
| } |