com.predic8.membrane.core.interceptor.shutdown.ShutdownInterceptor Maven / Gradle / Ivy
/* Copyright 2009, 2012 predic8 GmbH, www.predic8.com
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 com.predic8.membrane.core.interceptor.shutdown;
import com.predic8.membrane.annot.MCElement;
import com.predic8.membrane.core.exchange.Exchange;
import com.predic8.membrane.core.http.Response;
import com.predic8.membrane.core.interceptor.AbstractInterceptor;
import com.predic8.membrane.core.interceptor.Outcome;
/**
* @description Shutdown interceptor.
* @explanation
* Adds the ability to shutdown main router thread via an HTTP request.
* Don't forget to setup security for this interceptor.
*
*
* Has undefined behavior when Membrane is not started from command line
* (=via the RouterCLI class, which service-proxy.bat/service-proxy.sh
* do use).
*
*
* Only actually terminates the running JVM, when used in the first
* <router> bean (which implicitly stands for
* <router id="router">) called "router".
*
* @topic 4. Interceptors/Features
*/
@MCElement(name="shutdown")
public class ShutdownInterceptor extends AbstractInterceptor {
@Override
public Outcome handleRequest(Exchange exc) throws Exception {
if (getRouter().isRunning()) {
exc.setResponse(Response.ok("Router shutdown procedure was started.").build());
new Thread(new Runnable() {
@Override
public void run() {
try {
Thread.sleep(100); // Wait a moment to finish this request.
} catch (InterruptedException e) {
// DONOTHING
}
getRouter().stop(); // stop the router
}
}).start();
} else {
exc.setResponse(Response.serverUnavailable("Router is not started.").build());
}
return Outcome.RETURN;
}
}