/**
* 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.yarn.server.resourcemanager.scheduler.common;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.yarn.api.records.ContainerId;
import org.apache.hadoop.yarn.api.records.Resource;
import org.apache.hadoop.yarn.server.resourcemanager.rmcontainer.RMContainer;
@InterfaceAudience.Private
@InterfaceStability.Unstable
public class AssignmentInformation {
public enum Operation {
ALLOCATION, RESERVATION
}
public static class AssignmentDetails {
public ContainerId containerId;
public String queue;
public AssignmentDetails(ContainerId containerId, String queue) {
this.containerId = containerId;
this.queue = queue;
}
}
private final Map<Operation, Integer> operationCounts;
private final Map<Operation, Resource> operationResources;
private final Map<Operation, List<AssignmentDetails>> operationDetails;
public AssignmentInformation() {
this.operationCounts = new HashMap<>();
this.operationResources = new HashMap<>();
this.operationDetails = new HashMap<>();
for (Operation op : Operation.values()) {
operationCounts.put(op, 0);
operationResources.put(op, Resource.newInstance(0, 0));
operationDetails.put(op, new ArrayList<AssignmentDetails>());
}
}
public int getNumAllocations() {
return operationCounts.get(Operation.ALLOCATION);
}
public void incrAllocations() {
increment(Operation.ALLOCATION, 1);
}
public void incrAllocations(int by) {
increment(Operation.ALLOCATION, by);
}
public int getNumReservations() {
return operationCounts.get(Operation.RESERVATION);
}
public void incrReservations() {
increment(Operation.RESERVATION, 1);
}
public void incrReservations(int by) {
increment(Operation.RESERVATION, by);
}
private void increment(Operation op, int by) {
operationCounts.put(op, operationCounts.get(op) + by);
}
public Resource getAllocated() {
return operationResources.get(Operation.ALLOCATION);
}
public Resource getReserved() {
return operationResources.get(Operation.RESERVATION);
}
private void addAssignmentDetails(Operation op, ContainerId containerId,
String queue) {
operationDetails.get(op).add(new AssignmentDetails(containerId, queue));
}
public void addAllocationDetails(ContainerId containerId, String queue) {
addAssignmentDetails(Operation.ALLOCATION, containerId, queue);
}
public void addReservationDetails(ContainerId containerId, String queue) {
addAssignmentDetails(Operation.RESERVATION, containerId, queue);
}
public List<AssignmentDetails> getAllocationDetails() {
return operationDetails.get(Operation.ALLOCATION);
}
public List<AssignmentDetails> getReservationDetails() {
return operationDetails.get(Operation.RESERVATION);
}
private ContainerId getFirstContainerIdFromOperation(Operation op) {
if (null != operationDetails.get(Operation.ALLOCATION)) {
List<AssignmentDetails> assignDetails =
operationDetails.get(Operation.ALLOCATION);
if (!assignDetails.isEmpty()) {
return assignDetails.get(0).containerId;
}
}
return null;
}
public ContainerId getFirstAllocatedOrReservedContainerId() {
ContainerId containerId = null;
containerId = getFirstContainerIdFromOperation(Operation.ALLOCATION);
if (null != containerId) {
return containerId;
}
return getFirstContainerIdFromOperation(Operation.RESERVATION);
}
}