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.daemon.nimbus.metric.assignment;
  
  import com.alibaba.jstorm.daemon.nimbus.metric.ClusterMetricsRunnable;
  import com.alibaba.jstorm.daemon.nimbus.metric.MetricEvent;
  import com.alibaba.jstorm.metric.TopologyMetricContext;
  
  public class StartTopologyEvent extends MetricEvent {
      private double sampleRate;
      
      @Override
      public void run() {
          context.getMetricCache().putSampleRate(topologyId, sampleRate);
          context.getMetricUploaderDelegate().sendEvent(context.getClusterName(), this);
          
          if (!context.getTopologyMetricContexts().containsKey(topologyId)) {
              TopologyMetricContext metricContext = new TopologyMetricContext();
              // note that workerNum is not set here.
              context.getTopologyMetricContexts().put(topologyId, metricContext);
          }
      }
      
      public double getSampleRate() {
          return sampleRate;
      }
      
      public void setSampleRate(double sampleRate) {
          this.sampleRate = sampleRate;
      }
      
      public static void pushEvent(String topologyId, double sampleRate) {
          StartTopologyEvent startEvent = new StartTopologyEvent();
          startEvent.topologyId = topologyId;
          startEvent.sampleRate = sampleRate;
          ClusterMetricsRunnable.pushEvent(startEvent);
      }
      
  }
  