org.apache.activemq.artemis.core.server.cluster.ha.HAPolicy Maven / Gradle / Ivy
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* 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
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package org.apache.activemq.artemis.core.server.cluster.ha;
import java.util.Map;
import org.apache.activemq.artemis.api.config.ActiveMQDefaultConfiguration;
import org.apache.activemq.artemis.core.io.IOCriticalErrorListener;
import org.apache.activemq.artemis.core.server.impl.Activation;
import org.apache.activemq.artemis.core.server.impl.ActiveMQServerImpl;
/**
* Every live server will have an HAPolicy that configures the type of server that it should be either live, backup or
* colocated (both). It also configures how, if colocated, it should react to sending and receiving requests for backups.
*/
public interface HAPolicy {
/*
* created the Activation associated with this policy.
* */
T createActivation(ActiveMQServerImpl server,
boolean wasLive,
Map activationParams,
IOCriticalErrorListener shutdownOnCriticalIO) throws Exception;
boolean isSharedStore();
boolean isBackup();
default boolean isWaitForActivation() {
return ActiveMQDefaultConfiguration.isDefaultWaitForActivation();
}
boolean canScaleDown();
/*
* todo These 3 methods could probably be moved as they are specific to the activation however they are needed for certain packets.
* */
String getBackupGroupName();
String getScaleDownGroupName();
String getScaleDownClustername();
default boolean useQuorumManager() {
return true;
}
}