/*
 * 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.fs.aliyun.oss.statistics.impl;

import org.apache.hadoop.fs.aliyun.oss.statistics.BlockOutputStreamStatistics;

import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.atomic.AtomicLong;

/**
 * Implementation of {@link BlockOutputStreamStatistics}.
 */
public class OutputStreamStatistics implements BlockOutputStreamStatistics {
  private final AtomicInteger blocksAllocated = new AtomicInteger(0);
  private final AtomicInteger blocksReleased = new AtomicInteger(0);

  private final AtomicInteger diskBlocksAllocated = new AtomicInteger(0);
  private final AtomicInteger diskBlocksReleased = new AtomicInteger(0);

  private final AtomicLong bytesAllocated = new AtomicLong(0);
  private final AtomicLong bytesReleased = new AtomicLong(0);

  @Override
  public void blockAllocated() {
    blocksAllocated.incrementAndGet();
  }

  @Override
  public void blockReleased() {
    blocksReleased.incrementAndGet();
  }

  @Override
  public void diskBlockAllocated() {
    diskBlocksAllocated.incrementAndGet();
  }

  @Override
  public void diskBlockReleased() {
    diskBlocksReleased.incrementAndGet();
  }

  @Override
  public int getBlocksAllocated() {
    return blocksAllocated.get();
  }

  @Override
  public int getBlocksReleased() {
    return blocksReleased.get();
  }

  @Override
  public int getDiskBlocksAllocated() {
    return diskBlocksAllocated.get();
  }

  @Override
  public int getDiskBlocksReleased() {
    return diskBlocksReleased.get();
  }

  @Override
  public void bytesAllocated(long size) {
    bytesAllocated.getAndAdd(size);
  }

  @Override
  public void bytesReleased(long size) {
    bytesReleased.getAndAdd(size);
  }

  @Override
  public long getBytesAllocated() {
    return bytesAllocated.get();
  }

  @Override
  public long getBytesReleased() {
    return bytesReleased.get();
  }
}
