| /* |
| * 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.ozone.container.common.volume; |
| |
| import org.apache.hadoop.metrics2.MetricsSystem; |
| import org.apache.hadoop.metrics2.annotation.Metric; |
| import org.apache.hadoop.metrics2.annotation.Metrics; |
| import org.apache.hadoop.metrics2.lib.DefaultMetricsSystem; |
| import org.apache.hadoop.ozone.OzoneConsts; |
| |
| /** |
| * This class is used to track Volume Info stats for each HDDS Volume. |
| */ |
| @Metrics(about = "Ozone Volume Information Metrics", |
| context = OzoneConsts.OZONE) |
| public class VolumeInfoMetrics { |
| |
| private String metricsSourceName = VolumeInfoMetrics.class.getSimpleName(); |
| private String volumeRootStr; |
| private HddsVolume volume; |
| |
| /** |
| * @param identifier Typically, path to volume root. e.g. /data/hdds |
| */ |
| public VolumeInfoMetrics(String identifier, HddsVolume ref) { |
| this.metricsSourceName += '-' + identifier; |
| this.volumeRootStr = identifier; |
| this.volume = ref; |
| init(); |
| } |
| |
| public void init() { |
| MetricsSystem ms = DefaultMetricsSystem.instance(); |
| ms.register(metricsSourceName, "Volume Info Statistics", this); |
| } |
| |
| public void unregister() { |
| MetricsSystem ms = DefaultMetricsSystem.instance(); |
| ms.unregisterSource(metricsSourceName); |
| } |
| |
| @Metric("Metric to return the Storage Type") |
| public String getStorageType() { |
| return volume.getStorageType().toString(); |
| } |
| |
| @Metric("Returns the Directory name for the volume") |
| public String getStorageDirectory() { |
| return volume.getStorageDir().toString(); |
| } |
| |
| @Metric("Return the DataNode UID for the respective volume") |
| public String getDatanodeUuid() { |
| return volume.getDatanodeUuid(); |
| } |
| |
| @Metric("Return the Layout Version for the volume") |
| public int getLayoutVersion() { |
| return volume.getLayoutVersion(); |
| } |
| |
| @Metric("Returns the Volume State") |
| public String getVolumeState() { |
| return volume.getStorageState().name(); |
| } |
| |
| @Metric("Returns the Volume Type") |
| public String getVolumeType() { |
| return volume.getType().name(); |
| } |
| |
| public String getMetricsSourceName() { |
| return metricsSourceName; |
| } |
| |
| /** |
| * Test conservative avail space. |
| * |----used----| (avail) |++++++++reserved++++++++| |
| * |<------- capacity ------->| |
| * |<------------------- Total capacity -------------->| |
| * A) avail = capacity - used |
| * B) capacity = used + avail |
| * C) Total capacity = used + avail + reserved |
| */ |
| |
| /** |
| * Return the Storage type for the Volume. |
| */ |
| @Metric("Returns the Used space") |
| public long getUsed() { |
| return volume.getVolumeInfo().getScmUsed(); |
| } |
| |
| /** |
| * Return the Total Available capacity of the Volume. |
| */ |
| @Metric("Returns the Available space") |
| public long getAvailable() { |
| return volume.getVolumeInfo().getAvailable(); |
| } |
| |
| /** |
| * Return the Total Reserved of the Volume. |
| */ |
| @Metric("Fetches the Reserved Space") |
| public long getReserved() { |
| return volume.getVolumeInfo().getReservedInBytes(); |
| } |
| |
| /** |
| * Return the Total capacity of the Volume. |
| */ |
| @Metric("Returns the Capacity of the Volume") |
| public long getCapacity() { |
| return getUsed() + getAvailable(); |
| } |
| |
| /** |
| * Return the Total capacity of the Volume. |
| */ |
| @Metric("Returns the Total Capacity of the Volume") |
| public long getTotalCapacity() { |
| return (getUsed() + getAvailable() + getReserved()); |
| } |
| |
| } |