ShutdownMessage.java example

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/*
 * 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 org.apache.geode.*;
import org.apache.geode.internal.*;
import org.apache.geode.internal.i18n.LocalizedStrings;

import java.io.*;
import org.apache.geode.distributed.internal.membership.*;

/**
 * A message that is sent to all other distribution manager when a distribution manager shuts down.
 * 
 * N.B. -- this is a SerialDistributionMessage due to bug32980
 */
public final class ShutdownMessage extends HighPriorityDistributionMessage
    implements AdminMessageType, MessageWithReply {
  /** The is of the distribution manager that is shutting down */
  protected InternalDistributedMember id;
  private int processorId;

  /**
   * Sets the id of the distribution manager that is shutting down
   */
  void setDistributionManagerId(InternalDistributedMember id) {
    this.id = id;
  }

  @Override
  public boolean sendViaUDP() {
    return true;
  }

  /** set the reply processor id that's used to wait for acknowledgements */
  public void setProcessorId(int pid) {
    processorId = pid;
  }

  /** return the reply processor id that's used to wait for acknowledgements */
  @Override
  public int getProcessorId() {
    return processorId;
  }

  @Override
  public boolean getInlineProcess() {
    return false;
  }

  /**
   * Removes the distribution manager that is started up from the current DM's list of members.
   *
   * This method is invoked on the receiver side
   */
  @Override
  protected void process(final DistributionManager dm) {
    Assert.assertTrue(this.id != null);
    // The peer goes deaf after sending us this message, so do not
    // attempt a reply.

    // final ReplyMessage reply = new ReplyMessage();
    // reply.setProcessorId(processorId);
    // reply.setRecipient(getSender());
    // can't send a response in a UDP receiver thread or we might miss
    // the other side going away due to blocking receipt of views
    // if (DistributionMessage.isPreciousThread()) {
    // dm.getWaitingThreadPool().execute(new Runnable() {
    // public void run() {
    // dm.putOutgoing(reply);
    // dm.handleManagerDeparture(ShutdownMessage.this.id, false, "shutdown message received");
    // }
    // });
    // }
    // else {
    // dm.putOutgoing(reply);
    dm.shutdownMessageReceived(id,
        LocalizedStrings.ShutdownMessage_SHUTDOWN_MESSAGE_RECEIVED.toLocalizedString());
    // }
  }

  public int getDSFID() {
    return SHUTDOWN_MESSAGE;
  }

  @Override
  public void toData(DataOutput out) throws IOException {
    super.toData(out);
    out.writeInt(processorId);
    DataSerializer.writeObject(this.id, out);
  }

  @Override
  public void fromData(DataInput in) throws IOException, ClassNotFoundException {

    super.fromData(in);
    processorId = in.readInt();
    this.id = (InternalDistributedMember) DataSerializer.readObject(in);
  }

  @Override
  public String toString() {
    return LocalizedStrings.ShutdownMessage_SHUTDOWNMESSAGE_DM_0_HAS_SHUTDOWN
        .toLocalizedString(this.id);
  }

}