/*
* Copyright 2010-2013 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.data.gemfire.fork;
import java.io.File;
import java.io.IOException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.data.gemfire.process.support.ProcessUtils;
import org.springframework.data.gemfire.test.support.FileSystemUtils;
import org.springframework.util.Assert;
/**
* The ServerProcess class is a main Java class using Spring Data GemFire to configure and bootstrap
* a GemFire Cache Server process.
*
* @author John Blum
* @see org.springframework.context.ConfigurableApplicationContext
* @see org.springframework.context.support.ClassPathXmlApplicationContext
* @since 1.5.2
*/
public class ServerProcess {
private static final Logger logger = LoggerFactory.getLogger(ServerProcess.class);
public static void main(String[] args) throws Throwable {
ConfigurableApplicationContext applicationContext = null;
try {
applicationContext = newApplicationContext(args);
waitForShutdown();
}
catch (Throwable e) {
logger.debug("", e);
throw e;
}
finally {
close(applicationContext);
}
}
private static ConfigurableApplicationContext newApplicationContext(String[] configLocations) {
Assert.notEmpty(configLocations, String.format("Usage: >java -cp ... %1$s %2$s",
ServerProcess.class.getName(), "classpath:/to/applicationContext.xml"));
ConfigurableApplicationContext applicationContext = new ClassPathXmlApplicationContext(configLocations);
applicationContext.registerShutdownHook();
return applicationContext;
}
private static boolean close(ConfigurableApplicationContext applicationContext) {
if (applicationContext != null) {
applicationContext.close();
return !(applicationContext.isRunning() || applicationContext.isActive());
}
return true;
}
private static void waitForShutdown() throws IOException {
ProcessUtils.writePid(new File(FileSystemUtils.WORKING_DIRECTORY, getServerProcessControlFilename()),
ProcessUtils.currentPid());
ProcessUtils.waitForStopSignal();
}
public static String getServerProcessControlFilename() {
return ServerProcess.class.getSimpleName().toLowerCase().concat(".pid");
}
}