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 org.apache.cassandra.hints;
  
  import java.io.Serializable;
  import java.util.HashMap;
  
  import org.apache.cassandra.diag.DiagnosticEvent;
  
  /**
   * DiagnosticEvent implementation for HintService.
   */
  final class HintsServiceEvent extends DiagnosticEvent
  {
      enum HintsServiceEventType
      {
          DISPATCHING_STARTED,
          DISPATCHING_PAUSED,
          DISPATCHING_RESUMED,
          DISPATCHING_SHUTDOWN
      }
  
      private final HintsServiceEventType type;
      private final HintsService service;
      private final boolean isDispatchPaused;
      private final boolean isShutdown;
      private final boolean dispatchExecutorIsPaused;
      private final boolean dispatchExecutorHasScheduledDispatches;
  
      HintsServiceEvent(HintsServiceEventType type, HintsService service)
      {
          this.type = type;
          this.service = service;
          this.isDispatchPaused = service.isDispatchPaused.get();
          this.isShutdown = service.isShutDown();
          this.dispatchExecutorIsPaused = service.dispatchExecutor.isPaused();
          this.dispatchExecutorHasScheduledDispatches = service.dispatchExecutor.hasScheduledDispatches();
      }
  
      public Enum<HintsServiceEventType> getType()
      {
          return type;
      }
  
      public HashMap<String, Serializable> toMap()
      {
          // be extra defensive against nulls and bugs
          HashMap<String, Serializable> ret = new HashMap<>();
          ret.put("isDispatchPaused", isDispatchPaused);
          ret.put("isShutdown", isShutdown);
          ret.put("dispatchExecutorIsPaused", dispatchExecutorIsPaused);
          ret.put("dispatchExecutorHasScheduledDispatches", dispatchExecutorHasScheduledDispatches);
          return ret;
      }
  }
  