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Ant Media Server supports RTMP, RTSP, MP4, HLS, WebRTC, Adaptive Streaming, etc.
/*
* RED5 Open Source Media Server - https://github.com/Red5/
*
* Copyright 2006-2016 by respective authors (see below). All rights reserved.
*
* 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.red5.server.service;
import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.io.RandomAccessFile;
import java.net.BindException;
import java.net.ServerSocket;
import java.net.Socket;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.UUID;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicBoolean;
import org.red5.logging.Red5LoggerFactory;
import org.red5.server.ContextLoader;
import org.red5.server.LoaderBase;
import org.red5.server.plugin.PluginRegistry;
import org.slf4j.Logger;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.DisposableBean;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.context.ConfigurableApplicationContext;
/**
* Server/service to perform orderly and controlled shutdown and clean up of Red5.
*
* @author Paul Gregoire ([email protected])
*/
public class ShutdownServer implements ApplicationContextAware, InitializingBean, DisposableBean {
private Logger log = Red5LoggerFactory.getLogger(ShutdownServer.class);
/**
* Port to which the server listens for shutdown requests. Default is 9999.
*/
private int port = 9999;
/**
* Delay or wait time in seconds before exiting.
*/
private int shutdownDelay = 30;
/**
* Name for the file containing the shutdown token
*/
private String shutdownTokenFileName = "shutdown.token";
/**
* Spring Application context
*/
private ApplicationContext applicationContext;
/**
* Red5 core context
*/
private ApplicationContext coreContext;
/**
* Red5 core context
*/
private ApplicationContext commonContext;
/**
* Red5 context loader
*/
private ContextLoader contextLoader;
// random token to verify shutdown request is genuine
private final String token = UUID.randomUUID().toString();
// whether the server is shutdown
private AtomicBoolean shutdown = new AtomicBoolean(false);
// single thread executor for the internal startup / server
private ExecutorService executor = Executors.newSingleThreadExecutor();
// reference to the runnable
private Future future;
// reference to the jee server
private LoaderBase jeeServer;
@Override
public void afterPropertiesSet() throws Exception {
try {
// check for an embedded jee server
jeeServer = applicationContext.getBean(LoaderBase.class);
// lookup the jee container
if (jeeServer == null) {
log.info("JEE server was not found");
} else {
log.info("JEE server was found: {}", jeeServer.toString());
}
} catch (Exception e) {
}
// start blocks, so it must be on its own thread
future = executor.submit(new Runnable(){
public void run() {
start();
}
});
}
@Override
public void destroy() throws Exception {
shutdownOrderly();
future.cancel(true);
}
/**
* Starts internal server listening for shutdown requests.
*/
public void start() {
// dump to stdout
System.out.printf("Token: %s%n", token);
// write out the token to a file so that red5 may be shutdown external to this VM instance.
try {
// delete existing file
Files.deleteIfExists(Paths.get(shutdownTokenFileName));
// write to file
Path path = Files.createFile(Paths.get(shutdownTokenFileName));
File tokenFile = path.toFile();
RandomAccessFile raf = new RandomAccessFile(tokenFile, "rws");
raf.write(token.getBytes());
raf.close();
} catch (Exception e) {
log.warn("Exception handling token file", e);
}
while (!shutdown.get()) {
try (
ServerSocket serverSocket = new ServerSocket(port);
Socket clientSocket = serverSocket.accept();
PrintWriter out = new PrintWriter(clientSocket.getOutputStream(), true);
BufferedReader in = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
) {
log.info("Connected - local: {} remote: {}", clientSocket.getLocalSocketAddress(), clientSocket.getRemoteSocketAddress());
String inputLine = in.readLine();
if (inputLine != null && token.equals(inputLine)) {
log.info("Shutdown request validated using token");
out.println("Ok");
shutdownOrderly();
} else {
out.println("Bye");
}
} catch (BindException be) {
log.error("Cannot bind to port: {}, ensure no other instances are bound or choose another port", port, be);
shutdownOrderly();
} catch (IOException e) {
log.warn("Exception caught when trying to listen on port {} or listening for a connection", port, e);
}
}
}
private void shutdownOrderly() {
// shutdown internal listener
shutdown.compareAndSet(false, true);
// shutdown the plug-in launcher
try {
log.debug("Attempting to shutdown plugin registry");
PluginRegistry.shutdown();
} catch (Exception e) {
log.warn("Exception shutting down plugin registry", e);
}
// shutdown the context loader
if (contextLoader != null) {
log.debug("Attempting to shutdown context loader");
contextLoader.shutdown();
contextLoader = null;
}
// shutdown the jee server
if (jeeServer != null) {
// destroy is a DisposibleBean method not LoaderBase
// jeeServer.destroy();
jeeServer = null;
}
// attempt to kill the contexts
final CountDownLatch latch = new CountDownLatch(3);
new Thread(new Runnable() {
public void run() {
try {
log.debug("Attempting to close core context");
((ConfigurableApplicationContext) coreContext).close();
latch.countDown();
} catch (Exception e) {
e.printStackTrace();
}
}
}).start();
new Thread(new Runnable() {
public void run() {
try {
log.debug("Attempting to close common context");
((ConfigurableApplicationContext) commonContext).close();
latch.countDown();
} catch (Exception e) {
e.printStackTrace();
}
}
}).start();
new Thread(new Runnable() {
public void run() {
try {
log.debug("Attempting to close app context");
((ConfigurableApplicationContext) applicationContext).close();
latch.countDown();
} catch (Exception e) {
e.printStackTrace();
}
}
}).start();
try {
if (latch.await(shutdownDelay, TimeUnit.SECONDS)) {
log.info("Application contexts are closed");
} else {
log.info("One or more contexts didn't close in the allotted time");
}
} catch (InterruptedException e) {
log.error("Exception attempting to close app contexts", e);
e.printStackTrace();
Thread.currentThread().interrupt();
}
// exit
System.exit(0);
}
public void setPort(int port) {
this.port = port;
}
public void setShutdownDelay(int shutdownDelay) {
this.shutdownDelay = shutdownDelay;
}
public void setShutdownTokenFileName(String shutdownTokenFileName) {
this.shutdownTokenFileName = shutdownTokenFileName;
}
@Override
public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
this.applicationContext = applicationContext;
}
public void setCoreContext(ApplicationContext coreContext) {
this.coreContext = coreContext;
}
public void setCommonContext(ApplicationContext commonContext) {
this.commonContext = commonContext;
}
public void setContextLoader(ContextLoader contextLoader) {
this.contextLoader = contextLoader;
}
}