org.apache.dubbo.config.spring.context.DubboBootstrapApplicationListener Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of dubbo Show documentation
Show all versions of dubbo Show documentation
The all in one project of dubbo
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* 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
* 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.apache.dubbo.config.spring.context;
import org.apache.dubbo.common.logger.ErrorTypeAwareLogger;
import org.apache.dubbo.common.logger.LoggerFactory;
import org.apache.dubbo.config.bootstrap.BootstrapTakeoverMode;
import org.apache.dubbo.config.bootstrap.DubboBootstrap;
import org.apache.dubbo.config.spring.context.event.DubboConfigInitEvent;
import org.apache.dubbo.config.spring.util.DubboBeanUtils;
import org.apache.dubbo.rpc.model.ModuleModel;
import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.context.ApplicationEvent;
import org.springframework.context.ApplicationListener;
import org.springframework.context.event.ApplicationContextEvent;
import org.springframework.context.event.ContextClosedEvent;
import org.springframework.context.event.ContextRefreshedEvent;
import org.springframework.core.Ordered;
import static org.apache.dubbo.common.constants.LoggerCodeConstants.CONFIG_DUBBO_BEAN_INITIALIZER;
import static org.apache.dubbo.common.constants.LoggerCodeConstants.CONFIG_DUBBO_BEAN_NOT_FOUND;
import static org.springframework.util.ObjectUtils.nullSafeEquals;
/**
* The {@link ApplicationListener} for {@link DubboBootstrap}'s lifecycle when the {@link ContextRefreshedEvent}
* and {@link ContextClosedEvent} raised
*
* @since 2.7.5
*/
@Deprecated
public class DubboBootstrapApplicationListener implements ApplicationListener, ApplicationContextAware, Ordered {
/**
* The bean name of {@link DubboBootstrapApplicationListener}
*
* @since 2.7.6
*/
public static final String BEAN_NAME = "dubboBootstrapApplicationListener";
private final ErrorTypeAwareLogger logger = LoggerFactory.getErrorTypeAwareLogger(getClass());
private ApplicationContext applicationContext;
private DubboBootstrap bootstrap;
private boolean shouldInitConfigBeans;
private ModuleModel moduleModel;
public DubboBootstrapApplicationListener() {
}
public DubboBootstrapApplicationListener(boolean shouldInitConfigBeans) {
// maybe register DubboBootstrapApplicationListener manual during spring context starting
this.shouldInitConfigBeans = shouldInitConfigBeans;
}
private void setBootstrap(DubboBootstrap bootstrap) {
this.bootstrap = bootstrap;
if (bootstrap.getTakeoverMode() != BootstrapTakeoverMode.MANUAL) {
bootstrap.setTakeoverMode(BootstrapTakeoverMode.SPRING);
}
}
@Override
public void onApplicationEvent(ApplicationEvent event) {
if (isOriginalEventSource(event)) {
if (event instanceof DubboConfigInitEvent) {
// This event will be notified at AbstractApplicationContext.registerListeners(),
// init dubbo config beans before spring singleton beans
initDubboConfigBeans();
} else if (event instanceof ApplicationContextEvent) {
this.onApplicationContextEvent((ApplicationContextEvent) event);
}
}
}
private void initDubboConfigBeans() {
// load DubboConfigBeanInitializer to init config beans
if (applicationContext.containsBean(DubboConfigBeanInitializer.BEAN_NAME)) {
applicationContext.getBean(DubboConfigBeanInitializer.BEAN_NAME, DubboConfigBeanInitializer.class);
} else {
logger.warn(CONFIG_DUBBO_BEAN_NOT_FOUND, "", "", "Bean '" + DubboConfigBeanInitializer.BEAN_NAME + "' was not found");
}
// All infrastructure config beans are loaded, initialize dubbo here
moduleModel.getDeployer().initialize();
}
private void onApplicationContextEvent(ApplicationContextEvent event) {
if (DubboBootstrapStartStopListenerSpringAdapter.applicationContext == null) {
DubboBootstrapStartStopListenerSpringAdapter.applicationContext = event.getApplicationContext();
}
if (event instanceof ContextRefreshedEvent) {
onContextRefreshedEvent((ContextRefreshedEvent) event);
} else if (event instanceof ContextClosedEvent) {
onContextClosedEvent((ContextClosedEvent) event);
}
}
private void onContextRefreshedEvent(ContextRefreshedEvent event) {
if (bootstrap.getTakeoverMode() == BootstrapTakeoverMode.SPRING) {
moduleModel.getDeployer().start();
}
}
private void onContextClosedEvent(ContextClosedEvent event) {
if (bootstrap.getTakeoverMode() == BootstrapTakeoverMode.SPRING) {
// will call dubboBootstrap.stop() through shutdown callback.
//bootstrap.getApplicationModel().getBeanFactory().getBean(DubboShutdownHook.class).run();
moduleModel.getDeployer().stop();
}
}
/**
* Is original {@link ApplicationContext} as the event source
*
* @param event {@link ApplicationEvent}
* @return if original, return true
, or false
*/
private boolean isOriginalEventSource(ApplicationEvent event) {
boolean originalEventSource = nullSafeEquals(getApplicationContext(), event.getSource());
return originalEventSource;
}
@Override
public int getOrder() {
return LOWEST_PRECEDENCE;
}
@Override
public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
this.applicationContext = applicationContext;
moduleModel = DubboBeanUtils.getModuleModel(applicationContext);
this.setBootstrap(DubboBootstrap.getInstance(moduleModel.getApplicationModel()));
if (shouldInitConfigBeans) {
checkCallStackAndInit();
}
}
private void checkCallStackAndInit() {
// check call stack whether contains org.springframework.context.support.AbstractApplicationContext.registerListeners()
Exception exception = new Exception();
StackTraceElement[] stackTrace = exception.getStackTrace();
boolean found = false;
for (StackTraceElement frame : stackTrace) {
if (frame.getMethodName().equals("registerListeners") && frame.getClassName().endsWith("AbstractApplicationContext")) {
found = true;
break;
}
}
if (found) {
// init config beans here, compatible with spring 3.x/4.1.x
initDubboConfigBeans();
} else {
logger.warn(CONFIG_DUBBO_BEAN_INITIALIZER, "", "", "DubboBootstrapApplicationListener initialization is unexpected, " +
"it should be created in AbstractApplicationContext.registerListeners() method", exception);
}
}
public ApplicationContext getApplicationContext() {
return applicationContext;
}
}