/**
    * 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.hadoop.hbase.replication.regionserver;
  
  import org.apache.hadoop.metrics2.lib.MutableFastCounter;
  import org.apache.hadoop.metrics2.lib.MutableGaugeLong;
  import org.apache.hadoop.metrics2.lib.MutableHistogram;
  
  public class MetricsReplicationSinkSourceImpl implements MetricsReplicationSinkSource {
  
    private final MutableHistogram ageHist;
    private final MutableFastCounter batchesCounter;
    private final MutableFastCounter opsCounter;
    private final MutableFastCounter hfilesCounter;
  
    public MetricsReplicationSinkSourceImpl(MetricsReplicationSourceImpl rms) {
      ageHist = rms.getMetricsRegistry().newTimeHistogram(SINK_AGE_OF_LAST_APPLIED_OP);
      batchesCounter = rms.getMetricsRegistry().getCounter(SINK_APPLIED_BATCHES, 0L);
      opsCounter = rms.getMetricsRegistry().getCounter(SINK_APPLIED_OPS, 0L);
      hfilesCounter = rms.getMetricsRegistry().getCounter(SINK_APPLIED_HFILES, 0L);
    }
  
    @Override public void setLastAppliedOpAge(long age) {
      ageHist.add(age);
    }
  
    @Override public void incrAppliedBatches(long batches) {
      batchesCounter.incr(batches);
    }
  
    @Override public void incrAppliedOps(long batchsize) {
      opsCounter.incr(batchsize);
    }
  
    @Override
    public long getLastAppliedOpAge() {
      return ageHist.getMax();
    }
  
    @Override
    public void incrAppliedHFiles(long hfiles) {
      hfilesCounter.incr(hfiles);
    }
  }