com.hazelcast.jet.server.StartServer Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2018, Hazelcast, Inc. 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 com.hazelcast.jet.server;
import com.hazelcast.core.HazelcastInstance;
import com.hazelcast.jet.Jet;
import com.hazelcast.jet.JetInstance;
import java.io.File;
import java.io.PrintWriter;
import static com.hazelcast.nio.IOUtil.closeResource;
/**
* Main class that starts a Hazelcast Jet instance.
*/
public final class StartServer {
private StartServer() {
}
/**
* Creates a server instance of Hazelcast Jet. If the system property
* {@code print.port} is set, the server writes the port number of the
* Hazelcast instance to a file named by the property.
*/
public static void main(String[] args) throws Exception {
JetInstance jet = Jet.newJetInstance();
printMemberPort(jet.getHazelcastInstance());
}
private static void printMemberPort(HazelcastInstance hz) throws Exception {
String printPort = System.getProperty("print.port");
if (printPort != null) {
PrintWriter printWriter = null;
try {
printWriter = new PrintWriter("ports" + File.separator + printPort, "UTF-8");
printWriter.println(hz.getCluster().getLocalMember().getAddress().getPort());
} finally {
closeResource(printWriter);
}
}
}
}