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;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  public class DiagnosisEvent extends MetricEvent {
      private final Logger LOG = LoggerFactory.getLogger(getClass());
  
      @Override
      public void run() {
          if (!context.getNimbusData().isLeader()) {
              return;
          }
  
          // if metricUploader is not fully initialized, return directly
          if (!context.isReadyToUpload()) {
              LOG.info("Context Metric Uploader isn't ready");
              return;
          }
  
          context.printDiagnosticStats();
      }
  }
  