content: /*
   * Tencent is pleased to support the open source community by making Angel available.
   *
   * Copyright (C) 2017-2018 THL A29 Limited, a Tencent company. All rights reserved.
   *
   * Licensed 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
   *
   * https://opensource.org/licenses/Apache-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.tencent.angel.ps.server.data;
  
  import java.util.HashMap;
  import java.util.concurrent.locks.Lock;
  import java.util.concurrent.locks.ReentrantLock;
  
  /**
   * PS failed counters
   */
  public class PSFailedReport {
    private HashMap<PSLocation, Integer> psToFailedCounterMap;
    private final Lock lock;
  
    public PSFailedReport() {
      lock = new ReentrantLock();
      psToFailedCounterMap = new HashMap<>();
    }
  
    public void psFailed(PSLocation psLoc) {
      psFailed(psLoc, 1);
    }
  
    public void psFailed(PSLocation psLoc, int counter) {
      try {
        lock.lock();
        if (psToFailedCounterMap.containsKey(psLoc)) {
          psToFailedCounterMap.put(psLoc, psToFailedCounterMap.get(psLoc) + counter);
        } else {
          psToFailedCounterMap.put(psLoc, counter);
        }
      } finally {
        lock.unlock();
      }
    }
  
    public HashMap<PSLocation, Integer> getReports() {
      try {
        lock.lock();
        HashMap<PSLocation, Integer> ret = psToFailedCounterMap;
        psToFailedCounterMap = new HashMap<>();
        return ret;
      } finally {
        lock.unlock();
      }
    }
  }
  