/*
 * 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.cache.client.internal.locator;

import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import java.util.List;

import org.apache.geode.DataSerializer;
import org.apache.geode.distributed.internal.ServerLocation;
import org.apache.geode.internal.serialization.DataSerializableFixedID;
import org.apache.geode.internal.serialization.DeserializationContext;
import org.apache.geode.internal.serialization.SerializationContext;

/**
 * A response from locator to client indicating the servers to use to host the clients queue. The
 * servers already contain the queue if the durableQueueFound flag is true.
 *
 */
public class QueueConnectionResponse extends ServerLocationResponse {

  private boolean durableQueueFound;
  private List<ServerLocation> servers;
  private boolean serversFound = false;

  public QueueConnectionResponse() {}

  public QueueConnectionResponse(boolean durableQueueFound, List<ServerLocation> servers) {
    this.durableQueueFound = durableQueueFound;
    this.servers = servers;
    if (servers != null && !servers.isEmpty()) {
      this.serversFound = true;
    }
  }

  @Override
  public void fromData(DataInput in,
      DeserializationContext context) throws IOException, ClassNotFoundException {
    durableQueueFound = DataSerializer.readPrimitiveBoolean(in);
    servers = SerializationHelper.readServerLocationList(in);
    if (this.servers != null && !this.servers.isEmpty()) {
      this.serversFound = true;
    }
  }

  @Override
  public void toData(DataOutput out,
      SerializationContext context) throws IOException {
    DataSerializer.writePrimitiveBoolean(durableQueueFound, out);
    SerializationHelper.writeServerLocationList(servers, out);
  }

  public boolean isDurableQueueFound() {
    return durableQueueFound;
  }

  public List<ServerLocation> getServers() {
    return servers;
  }

  @Override
  public String toString() {
    return "QueueConnectionResponse{durableQueueFound=" + durableQueueFound + ", servers=" + servers
        + "}";
  }

  @Override
  public int getDSFID() {
    return DataSerializableFixedID.QUEUE_CONNECTION_RESPONSE;
  }

  @Override
  public boolean hasResult() {
    return this.serversFound;
  }

}