spring GracefulShutdown 源码
springboot GracefulShutdown 代码
文件路径：/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/web/embedded/netty/GracefulShutdown.java
/*
* Copyright 2012-2020 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
*
* https://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.web.embedded.netty;
import java.time.Duration;
import java.util.function.Supplier;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import reactor.netty.DisposableServer;
import org.springframework.boot.web.server.GracefulShutdownCallback;
import org.springframework.boot.web.server.GracefulShutdownResult;
/**
* Handles Netty graceful shutdown.
*
* @author Andy Wilkinson
*/
final class GracefulShutdown {
private static final Log logger = LogFactory.getLog(GracefulShutdown.class);
private final Supplier<DisposableServer> disposableServer;
private volatile Thread shutdownThread;
private volatile boolean shuttingDown;
GracefulShutdown(Supplier<DisposableServer> disposableServer) {
this.disposableServer = disposableServer;
}
void shutDownGracefully(GracefulShutdownCallback callback) {
DisposableServer server = this.disposableServer.get();
if (server == null) {
return;
}
logger.info("Commencing graceful shutdown. Waiting for active requests to complete");
this.shutdownThread = new Thread(() -> doShutdown(callback, server), "netty-shutdown");
this.shutdownThread.start();
}
private void doShutdown(GracefulShutdownCallback callback, DisposableServer server) {
this.shuttingDown = true;
try {
server.disposeNow(Duration.ofNanos(Long.MAX_VALUE));
logger.info("Graceful shutdown complete");
callback.shutdownComplete(GracefulShutdownResult.IDLE);
}
catch (Exception ex) {
logger.info("Graceful shutdown aborted with one or more requests still active");
callback.shutdownComplete(GracefulShutdownResult.REQUESTS_ACTIVE);
}
finally {
this.shutdownThread = null;
this.shuttingDown = false;
}
}
void abort() {
Thread shutdownThread = this.shutdownThread;
if (shutdownThread != null) {
while (!this.shuttingDown) {
sleep(50);
}
this.shutdownThread.interrupt();
}
}
private void sleep(long millis) {
try {
Thread.sleep(millis);
}
catch (InterruptedException ex) {
Thread.currentThread().interrupt();
}
}
}
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- 本文标签： Spring Boot Java Spring
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