com.hazelcast.cp.CPMember Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2021, 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.cp;
import com.hazelcast.config.cp.CPSubsystemConfig;
import com.hazelcast.cluster.Cluster;
import com.hazelcast.cluster.Address;
import java.util.UUID;
/**
* A CP member is a Hazelcast member that is internally elected to be part of
* the {@link CPSubsystem}, hence maintain CP data structures. If
* {@link CPSubsystemConfig#getCPMemberCount()} is configured to be N,
* first N members of the cluster are assigned as CP members during startup.
* After CP Subsystem is initialized, other Hazelcast members can be promoted
* to be a CP member via
* {@link CPSubsystemManagementService#promoteToCPMember()}.
*
* @see CPSubsystem
* @see CPSubsystemConfig
* @see CPSubsystemManagementService
*/
public interface CPMember {
/**
* Returns the UUID of this CP member. The CP member UUID does not have to
* be same with the UUID of the local member that is accessed via
* {@link Cluster#getLocalMember()}.
*
* @return the UUID of this CP Member
*/
UUID getUuid();
/**
* Returns the address of this CP member.
* It is same with the address of {@link Cluster#getLocalMember()}
*
* @return the address of this CP member
*/
Address getAddress();
}