content: /**
   * Copyright The Apache Software Foundation
   *
   * 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.wasp.master.metrics;
  
  
  /**
   * This class is for maintaining the various master statistics and publishing
   * them through the metrics interfaces.
   * <p>
   * This class has a number of metrics variables that are publicly accessible;
   * these variables (objects) have methods to update their values.
   */
  public class MetricsMaster {
    private MetricsMasterSource masterSource;
  
    public MetricsMaster(MetricsMasterWrapper masterWrapper) {
      masterSource = MetricsMasterSourceFactory.create(masterWrapper);
    }
  
    // for unit-test usage
    public MetricsMasterSource getMetricsSource() {
      return masterSource;
    }
  
    /**
     * @param inc How much to add to requests.
     */
    public void incrementRequests(final int inc) {
      masterSource.incRequests(inc);
  
    }
  
    /**
     * set new value for number of entity group in transition.
     * @param egitCount
     */
    public void updateEGITCount(int egitCount) {
      masterSource.setEGIT(egitCount);
    }
  
    /**
     * update EGIT count that are in this state for more than the threshold as
     * defined by the property egit.metrics.threshold.time.
     * @param egitCountOverThreshold
     */
    public void updateEGITCountOverThreshold(int egitCountOverThreshold) {
      masterSource.setEGITCountOverThreshold(egitCountOverThreshold);
    }
  
    /**
     * update the timestamp for oldest entity group in transition metrics.
     * @param timestamp
     */
    public void updateEGITOldestAge(long timestamp) {
      masterSource.setEGITOldestAge(timestamp);
    }
  }
  