com.hazelcast.internal.partition.PartitionMigrationEvent Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2020, Hazelcast, Inc. All Rights Reserved.
*
* Licensed 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 com.hazelcast.internal.partition;
/**
* An {@link java.util.EventObject} for a partition migration. Can be used by SPI services to get a callback
* to listen to partition migration. See {@link MigrationAwareService} for more info.
*/
public class PartitionMigrationEvent {
private final MigrationEndpoint migrationEndpoint;
private final int partitionId;
private final int currentReplicaIndex;
private final int newReplicaIndex;
public PartitionMigrationEvent(MigrationEndpoint migrationEndpoint, int partitionId,
int currentReplicaIndex, int newReplicaIndex) {
this.migrationEndpoint = migrationEndpoint;
this.partitionId = partitionId;
this.currentReplicaIndex = currentReplicaIndex;
this.newReplicaIndex = newReplicaIndex;
}
/**
* Gets the partition migration endpoint.
*
* @return the partition migration endpoint
*/
public MigrationEndpoint getMigrationEndpoint() {
return migrationEndpoint;
}
/**
* Gets the partition ID.
*
* @return the partition ID
*/
public int getPartitionId() {
return partitionId;
}
/**
* Gets the index of the partition replica that current member owns currently, before migration starts.
* This index will be in range of [0,6] if current member owns a replica of the partition. Otherwise it will be -1.
*
* @return index of the partition replica that current member owns currently
*/
public int getCurrentReplicaIndex() {
return currentReplicaIndex;
}
/**
* Gets the index of the partition replica that current member will own after migration is committed.
* This index will be -1 if partition replica will be moved from current member completely.
*
* @return index of the partition replica that current member will own after migration is committed
*/
public int getNewReplicaIndex() {
return newReplicaIndex;
}
@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
PartitionMigrationEvent that = (PartitionMigrationEvent) o;
if (partitionId != that.partitionId) {
return false;
}
if (currentReplicaIndex != that.currentReplicaIndex) {
return false;
}
if (newReplicaIndex != that.newReplicaIndex) {
return false;
}
return migrationEndpoint == that.migrationEndpoint;
}
@Override
public int hashCode() {
int result = migrationEndpoint.hashCode();
result = 31 * result + partitionId;
result = 31 * result + currentReplicaIndex;
result = 31 * result + newReplicaIndex;
return result;
}
@Override
public String toString() {
return "PartitionMigrationEvent{"
+ "migrationEndpoint=" + migrationEndpoint
+ ", partitionId=" + partitionId
+ ", currentReplicaIndex=" + currentReplicaIndex
+ ", newReplicaIndex=" + newReplicaIndex
+ '}';
}
}