com.hazelcast.internal.partition.PartitionStateGenerator 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;
import com.hazelcast.partition.membergroup.MemberGroup;
import java.util.Collection;
public interface PartitionStateGenerator {
/**
* Arranges the partition layout.
*
* This method does not actually change the partitions, but send back the updated layout.
*
* A two-dimensional array of addresses is returned where the first index is the partition ID, and
* the second index is the replica index.
*
* @param groups member groups
* @param currentState current partition state.
* @return proposed partition table
*/
PartitionReplica[][] arrange(Collection groups, InternalPartition[] currentState);
/**
* Arranges the partition layout.
*
* This method does not actually change the partitions, but send back the updated layout.
*
* A two-dimensional array of addresses is returned where the first index is the partition ID, and
* the second index is the replica index.
*
* When null partitions is given, all partitions will be arranged,
* similar to {@link #arrange(Collection, InternalPartition[])}.
*
* @param groups member groups
* @param currentState current partition state.
* @param partitions Partitions to be arranged only.
* @return proposed partition table
*/
PartitionReplica[][] arrange(Collection groups, InternalPartition[] currentState,
Collection partitions);
}