/**
*
* 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.airavata.sharing.registry.server;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.RandomAccessFile;
public class ServerMain {
private final static Logger logger = LoggerFactory.getLogger(ServerMain.class);
private static int serverPID = -1;
private static final String stopFileNamePrefix = "server_stop";
private static final String serverStartedFileNamePrefix = "server_start";
public static void main(String[] args) {
try {
setServerStarted();
new SharingRegistryServer().start();
} catch (Exception e) {
logger.error(e.getMessage(), e);
}
}
@SuppressWarnings({"resource"})
private static void setServerStarted() {
try {
serverPID = getPID();
deleteOldStopRequests();
File serverStartedFile = null;
serverStartedFile = new File(getServerStartedFileName());
serverStartedFile.createNewFile();
serverStartedFile.deleteOnExit();
new RandomAccessFile(serverStartedFile, "rw").getChannel().lock();
} catch (FileNotFoundException e) {
logger.warn(e.getMessage(), e);
} catch (IOException e) {
logger.warn(e.getMessage(), e);
}
}
private static String getServerStartedFileName() {
String SHARING_REGISTRY_HOME = System.getenv("" +"SHARING_REGISTRY_HOME");
if(SHARING_REGISTRY_HOME==null)
SHARING_REGISTRY_HOME = "/tmp";
else
SHARING_REGISTRY_HOME = SHARING_REGISTRY_HOME + "/bin";
return new File(SHARING_REGISTRY_HOME, serverStartedFileNamePrefix + "_" + Integer.toString(serverPID)).toString();
}
private static int getPID() {
try {
java.lang.management.RuntimeMXBean runtime = java.lang.management.ManagementFactory
.getRuntimeMXBean();
java.lang.reflect.Field jvm = runtime.getClass()
.getDeclaredField("jvm");
jvm.setAccessible(true);
sun.management.VMManagement mgmt = (sun.management.VMManagement) jvm
.get(runtime);
java.lang.reflect.Method pid_method = mgmt.getClass()
.getDeclaredMethod("getProcessId");
pid_method.setAccessible(true);
int pid = (Integer) pid_method.invoke(mgmt);
return pid;
} catch (Exception e) {
return -1;
}
}
private static void deleteOldStopRequests() {
File[] files = new File(".").listFiles();
for (File file : files) {
if (file.getName().contains(stopFileNamePrefix)) {
file.delete();
}
}
}
}