org.springframework.boot.devtools.restart.RestartApplicationListener Maven / Gradle / Ivy
/*
* Copyright 2012-2015 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.boot.devtools.restart;
import java.util.List;
import org.springframework.boot.context.event.ApplicationFailedEvent;
import org.springframework.boot.context.event.ApplicationReadyEvent;
import org.springframework.boot.context.event.ApplicationStartedEvent;
import org.springframework.context.ApplicationEvent;
import org.springframework.context.ApplicationListener;
import org.springframework.core.Ordered;
import org.springframework.core.io.support.SpringFactoriesLoader;
/**
* {@link ApplicationListener} to initialize the {@link Restarter}.
*
* @author Phillip Webb
* @since 1.3.0
* @see Restarter
*/
public class RestartApplicationListener
implements ApplicationListener, Ordered {
private int order = HIGHEST_PRECEDENCE;
private static final String ENABLED_PROPERTY = "spring.devtools.restart.enabled";
@Override
public void onApplicationEvent(ApplicationEvent event) {
if (event instanceof ApplicationStartedEvent) {
onApplicationStartedEvent((ApplicationStartedEvent) event);
}
if (event instanceof ApplicationReadyEvent
|| event instanceof ApplicationFailedEvent) {
Restarter.getInstance().finish();
}
}
private void onApplicationStartedEvent(ApplicationStartedEvent event) {
// It's too early to use the Spring environment but we should still allow
// users to disable restart using a System property.
String enabled = System.getProperty(ENABLED_PROPERTY);
if (enabled == null || Boolean.parseBoolean(enabled)) {
String[] args = event.getArgs();
DefaultRestartInitializer initializer = new DefaultRestartInitializer();
boolean restartOnInitialize = !AgentReloader.isActive();
List restartListeners = SpringFactoriesLoader
.loadFactories(RestartListener.class, getClass().getClassLoader());
Restarter.initialize(args, false, initializer, restartOnInitialize,
restartListeners
.toArray(new RestartListener[restartListeners.size()]));
}
else {
Restarter.disable();
}
}
@Override
public int getOrder() {
return this.order;
}
/**
* Set the order of the listener.
* @param order the order of the listener
*/
public void setOrder(int order) {
this.order = order;
}
}