| /** |
| * 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 backtype.storm.task; |
| |
| import backtype.storm.generated.StormTopology; |
| import backtype.storm.tuple.Fields; |
| import java.io.File; |
| import java.io.IOException; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.concurrent.ExecutorService; |
| |
| public class WorkerTopologyContext extends GeneralTopologyContext { |
| public static final String SHARED_EXECUTOR = "executor"; |
| |
| private Integer _workerPort; |
| private List<Integer> _workerTasks; |
| private String _codeDir; |
| private String _pidDir; |
| Map<String, Object> _userResources; |
| Map<String, Object> _defaultResources; |
| |
| public WorkerTopologyContext(StormTopology topology, Map stormConf, Map<Integer, String> taskToComponent, |
| Map<String, List<Integer>> componentToSortedTasks, Map<String, Map<String, Fields>> componentToStreamToFields, String stormId, String codeDir, |
| String pidDir, Integer workerPort, List<Integer> workerTasks, Map<String, Object> defaultResources, Map<String, Object> userResources) { |
| super(topology, stormConf, taskToComponent, componentToSortedTasks, componentToStreamToFields, stormId); |
| _codeDir = codeDir; |
| _defaultResources = defaultResources; |
| _userResources = userResources; |
| try { |
| if (pidDir != null) { |
| _pidDir = new File(pidDir).getCanonicalPath(); |
| } else { |
| _pidDir = null; |
| } |
| } catch (IOException e) { |
| throw new RuntimeException("Could not get canonical path for " + _pidDir, e); |
| } |
| _workerPort = workerPort; |
| _workerTasks = workerTasks; |
| } |
| |
| /** |
| * Gets all the task ids that are running in this worker process (including the task for this task). |
| */ |
| public List<Integer> getThisWorkerTasks() { |
| return _workerTasks; |
| } |
| |
| public Integer getThisWorkerPort() { |
| return _workerPort; |
| } |
| |
| public void setThisWorkerTasks(List<Integer> workerTasks) { |
| this._workerTasks = workerTasks; |
| } |
| |
| /** |
| * Gets the location of the external resources for this worker on the local filesystem. These external resources typically include bolts implemented in |
| * other languages, such as Ruby or Python. |
| */ |
| public String getCodeDir() { |
| return _codeDir; |
| } |
| |
| /** |
| * If this task spawns any subprocesses, those subprocesses must immediately write their PID to this directory on the local filesystem to ensure that Storm |
| * properly destroys that process when the worker is shutdown. |
| */ |
| public String getPIDDir() { |
| return _pidDir; |
| } |
| |
| public Object getResource(String name) { |
| return _userResources.get(name); |
| } |
| |
| public ExecutorService getSharedExecutor() { |
| return (ExecutorService) _defaultResources.get(SHARED_EXECUTOR); |
| } |
| } |