hadoop ExternalSPSBeanMetrics 源码

haddop ExternalSPSBeanMetrics 代码

文件路径：/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/sps/metrics/ExternalSPSBeanMetrics.java

/**
 * 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.hdfs.server.sps.metrics;

import org.apache.hadoop.classification.VisibleForTesting;
import org.apache.hadoop.hdfs.protocol.Block;
import org.apache.hadoop.hdfs.server.namenode.sps.ItemInfo;
import org.apache.hadoop.hdfs.server.namenode.sps.StoragePolicySatisfier;
import org.apache.hadoop.metrics2.util.MBeans;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import javax.management.NotCompliantMBeanException;
import javax.management.ObjectName;
import javax.management.StandardMBean;
import java.util.HashSet;

/**
 * Expose the ExternalSPS metrics.
 */
public class ExternalSPSBeanMetrics implements ExternalSPSMXBean {

  private static final Logger LOG =
      LoggerFactory.getLogger(ExternalSPSBeanMetrics.class);

  /**
   * ExternalSPS bean.
   */
  private ObjectName externalSPSBeanName;
  private StoragePolicySatisfier storagePolicySatisfier;

  public ExternalSPSBeanMetrics(StoragePolicySatisfier sps) {
    try {
      this.storagePolicySatisfier = sps;
      StandardMBean bean = new StandardMBean(this, ExternalSPSMXBean.class);
      this.externalSPSBeanName = MBeans.register("ExternalSPS", "ExternalSPS", bean);
      LOG.info("Registered ExternalSPS MBean: {}", this.externalSPSBeanName);
    } catch (NotCompliantMBeanException e) {
      throw new RuntimeException("Bad externalSPS MBean setup", e);
    }
  }

  /**
   * Unregister the JMX interfaces.
   */
  public void close() {
    if (externalSPSBeanName != null) {
      MBeans.unregister(externalSPSBeanName);
      externalSPSBeanName = null;
    }
  }

  @Override
  public int getProcessingQueueSize() {
    return storagePolicySatisfier.processingQueueSize();
  }

  @VisibleForTesting
  public void updateProcessingQueueSize() {
    storagePolicySatisfier.getStorageMovementQueue()
        .add(new ItemInfo(0, 1, 1));
  }

  @Override
  public int getMovementFinishedBlocksCount() {
    return storagePolicySatisfier.getAttemptedItemsMonitor().getMovementFinishedBlocksCount();
  }

  @VisibleForTesting
  public void updateMovementFinishedBlocksCount() {
    storagePolicySatisfier.getAttemptedItemsMonitor().getMovementFinishedBlocks()
        .add(new Block(1));
  }

  @Override
  public int getAttemptedItemsCount() {
    return storagePolicySatisfier.getAttemptedItemsMonitor().getAttemptedItemsCount();
  }

  @VisibleForTesting
  public void updateAttemptedItemsCount() {
    storagePolicySatisfier.getAttemptedItemsMonitor().getStorageMovementAttemptedItems()
        .add(new StoragePolicySatisfier.AttemptedItemInfo(0, 1,
            1, new HashSet<>(), 1));
  }
}

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