/**
* 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.blockmanagement;
import java.beans.ConstructorProperties;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
/**
* Statistics per StorageType.
*
*/
@InterfaceAudience.Private
@InterfaceStability.Evolving
public class StorageTypeStats {
private long capacityTotal = 0L;
private long capacityUsed = 0L;
private long capacityRemaining = 0L;
private long blockPoolUsed = 0L;
private int nodesInService = 0;
@ConstructorProperties({"capacityTotal",
"capacityUsed", "capacityRemaining", "blockPoolUsed", "nodesInService"})
public StorageTypeStats(long capacityTotal, long capacityUsed,
long capacityRemaining, long blockPoolUsed, int nodesInService) {
this.capacityTotal = capacityTotal;
this.capacityUsed = capacityUsed;
this.capacityRemaining = capacityRemaining;
this.blockPoolUsed = blockPoolUsed;
this.nodesInService = nodesInService;
}
public long getCapacityTotal() {
return capacityTotal;
}
public long getCapacityUsed() {
return capacityUsed;
}
public long getCapacityRemaining() {
return capacityRemaining;
}
public long getBlockPoolUsed() {
return blockPoolUsed;
}
public int getNodesInService() {
return nodesInService;
}
StorageTypeStats() {}
StorageTypeStats(StorageTypeStats other) {
capacityTotal = other.capacityTotal;
capacityUsed = other.capacityUsed;
capacityRemaining = other.capacityRemaining;
blockPoolUsed = other.blockPoolUsed;
nodesInService = other.nodesInService;
}
void addStorage(final DatanodeStorageInfo info,
final DatanodeDescriptor node) {
capacityUsed += info.getDfsUsed();
blockPoolUsed += info.getBlockPoolUsed();
if (!(node.isDecommissionInProgress() || node.isDecommissioned())) {
capacityTotal += info.getCapacity();
capacityRemaining += info.getRemaining();
} else {
capacityTotal += info.getDfsUsed();
}
}
void addNode(final DatanodeDescriptor node) {
if (!(node.isDecommissionInProgress() || node.isDecommissioned())) {
nodesInService++;
}
}
void subtractStorage(final DatanodeStorageInfo info,
final DatanodeDescriptor node) {
capacityUsed -= info.getDfsUsed();
blockPoolUsed -= info.getBlockPoolUsed();
if (!(node.isDecommissionInProgress() || node.isDecommissioned())) {
capacityTotal -= info.getCapacity();
capacityRemaining -= info.getRemaining();
} else {
capacityTotal -= info.getDfsUsed();
}
}
void subtractNode(final DatanodeDescriptor node) {
if (!(node.isDecommissionInProgress() || node.isDecommissioned())) {
nodesInService--;
}
}
}