/*
* Copyright 2015-2016 the original author or authors.
*
* 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 org.springframework.integration.zookeeper.config;
import java.util.UUID;
import org.apache.curator.framework.CuratorFramework;
import org.springframework.beans.factory.FactoryBean;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.context.ApplicationEventPublisher;
import org.springframework.context.ApplicationEventPublisherAware;
import org.springframework.context.SmartLifecycle;
import org.springframework.integration.leader.Candidate;
import org.springframework.integration.leader.DefaultCandidate;
import org.springframework.integration.leader.event.DefaultLeaderEventPublisher;
import org.springframework.integration.leader.event.LeaderEventPublisher;
import org.springframework.integration.zookeeper.leader.LeaderInitiator;
/**
* Creates a {@link LeaderInitiator}.
*
* @author Gary Russell
* @author Artem Bilan
* @since 4.2
*/
public class LeaderInitiatorFactoryBean
implements FactoryBean<LeaderInitiator>, SmartLifecycle, InitializingBean, ApplicationEventPublisherAware {
private CuratorFramework client;
private Candidate candidate;
private String path;
private LeaderInitiator leaderInitiator;
private boolean autoStartup = true;
private int phase;
private ApplicationEventPublisher applicationEventPublisher;
private LeaderEventPublisher leaderEventPublisher;
public LeaderInitiatorFactoryBean() {
}
public LeaderInitiatorFactoryBean setClient(CuratorFramework client) {
this.client = client;
return this;
}
public LeaderInitiatorFactoryBean setPath(String path) {
this.path = path;
return this;
}
public LeaderInitiatorFactoryBean setRole(String role) {
this.candidate = new DefaultCandidate(UUID.randomUUID().toString(), role);
return this;
}
/**
* A {@link LeaderEventPublisher} option for events from the {@link LeaderInitiator}.
* @param leaderEventPublisher the {@link LeaderEventPublisher} to use.
* @since 4.3.2
*/
public void setLeaderEventPublisher(LeaderEventPublisher leaderEventPublisher) {
this.leaderEventPublisher = leaderEventPublisher;
}
public void setPhase(int phase) {
this.phase = phase;
}
public void setAutoStartup(boolean autoStartup) {
this.autoStartup = autoStartup;
}
@Override
public void setApplicationEventPublisher(ApplicationEventPublisher applicationEventPublisher) {
this.applicationEventPublisher = applicationEventPublisher;
}
@Override
public boolean isAutoStartup() {
return this.leaderInitiator != null && this.leaderInitiator.isAutoStartup();
}
@Override
public void start() {
if (this.leaderInitiator != null) {
this.leaderInitiator.start();
}
}
@Override
public void stop() {
if (this.leaderInitiator != null) {
this.leaderInitiator.stop();
}
}
@Override
public void stop(Runnable callback) {
if (this.leaderInitiator != null) {
this.leaderInitiator.stop(callback);
}
else {
callback.run();
}
}
@Override
public boolean isRunning() {
return this.leaderInitiator != null && this.leaderInitiator.isRunning();
}
@Override
public int getPhase() {
if (this.leaderInitiator != null) {
return this.leaderInitiator.getPhase();
}
return 0;
}
@Override
public void afterPropertiesSet() throws Exception {
if (this.leaderInitiator == null) {
this.leaderInitiator = new LeaderInitiator(this.client, this.candidate, this.path);
this.leaderInitiator.setPhase(this.phase);
this.leaderInitiator.setAutoStartup(this.autoStartup);
if (this.leaderEventPublisher != null) {
this.leaderInitiator.setLeaderEventPublisher(this.leaderEventPublisher);
}
else if (this.applicationEventPublisher != null) {
this.leaderInitiator.setLeaderEventPublisher(
new DefaultLeaderEventPublisher(this.applicationEventPublisher));
}
}
}
@Override
public synchronized LeaderInitiator getObject() throws Exception {
return this.leaderInitiator;
}
@Override
public Class<?> getObjectType() {
return LeaderInitiator.class;
}
@Override
public boolean isSingleton() {
return true;
}
}