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 com.alibaba.jstorm.task.master;
  
  import backtype.storm.task.OutputCollector;
  import backtype.storm.task.TopologyContext;
  import com.alibaba.jstorm.cluster.StormClusterState;
  import com.alibaba.jstorm.metric.TopologyMetricContext;
  import com.alibaba.jstorm.schedule.Assignment;
  import com.alibaba.jstorm.schedule.default_assign.ResourceWorkerSlot;
  import java.util.Map;
  import java.util.Set;
  import java.util.concurrent.atomic.AtomicReference;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  public class TopologyMasterContext {
      private static final Logger LOG = LoggerFactory.getLogger(TopologyMasterContext.class);
  
      private final Map conf;
      private final TopologyContext context;
      private final StormClusterState zkCluster;
      private final OutputCollector collector;
  
      private final int taskId;
      private final String topologyId;
      private final AtomicReference<Set<ResourceWorkerSlot>> workerSet;
      private final TopologyMetricContext topologyMetricContext;
  
      public TopologyMasterContext(Map stormConf, TopologyContext context,
                                   final OutputCollector collector) {
          this.conf = context.getStormConf();
          this.context = context;
          this.collector = collector;
          this.taskId = context.getThisTaskId();
          this.topologyId = context.getTopologyId();
          this.zkCluster = context.getZkCluster();
  
          workerSet = new AtomicReference<>();
          try {
              Assignment assignment = zkCluster.assignment_info(topologyId, null);
              this.workerSet.set(assignment.getWorkers());
          } catch (Exception e) {
              LOG.error("Failed to get assignment for " + topologyId);
              throw new RuntimeException(e);
          }
  
          this.topologyMetricContext = new TopologyMetricContext(topologyId, workerSet.get(), conf);
      }
  
      public Map getConf() {
          return conf;
      }
  
      public TopologyContext getContext() {
          return context;
      }
  
      public StormClusterState getZkCluster() {
          return zkCluster;
      }
  
      public OutputCollector getCollector() {
          return collector;
      }
  
      public int getTaskId() {
          return taskId;
      }
  
      public String getTopologyId() {
          return topologyId;
      }
  
      public AtomicReference<Set<ResourceWorkerSlot>> getWorkerSet() {
          return workerSet;
      }
  
      public TopologyMetricContext getTopologyMetricContext() {
          return topologyMetricContext;
      }
  
  
  }
  