geode-core/src/distributedTest/java/org/apache/geode/distributed/internal/LDM.java

/*
 * 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.geode.distributed.internal;

import static org.apache.geode.distributed.ConfigurationProperties.LOCATORS;

import java.util.Properties;

import org.apache.logging.log4j.Logger;

import org.apache.geode.distributed.DistributedSystem;
import org.apache.geode.internal.logging.LogService;

/**
 * A little class for testing the local DistributionManager
 */
public class LDM {

  private static final Logger logger = LogService.getLogger();

  public static void main(String[] args) throws Exception {
    Properties props = new Properties();
    props.setProperty(LOCATORS, "localhost[31576]");
    props.setProperty("mcastPort", "0");
    props.setProperty("logLevel", "config");
    InternalDistributedSystem system = (InternalDistributedSystem) DistributedSystem.connect(props);
    DistributionManager dm = system.getDistributionManager();

    DistributionMessage message = new HelloMessage();
    dm.putOutgoing(message);

    system.getLogWriter().info("Waiting 5 seconds for message");

    try {
      Thread.sleep(5 * 1000);

    } catch (InterruptedException ex) {
      throw new AssertionError("interrupted");
    }

    system.disconnect();
  }

  static class HelloMessage extends SerialDistributionMessage {

    public HelloMessage() {} // for Externalizable

    @Override
    public void process(ClusterDistributionManager dm) {
      logger.fatal("Hello World");
    }

    @Override
    public int getDSFID() {
      return NO_FIXED_ID;
    }
  }

}