/*
 * 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 java.io.NotSerializableException;
import java.util.HashSet;
import java.util.Set;

import org.apache.logging.log4j.Logger;

import org.apache.geode.distributed.DistributedSystemDisconnectedException;
import org.apache.geode.distributed.internal.membership.InternalDistributedMember;
import org.apache.geode.distributed.internal.membership.MembershipManager;
import org.apache.geode.internal.i18n.LocalizedStrings;
import org.apache.geode.internal.logging.LogService;
import org.apache.geode.internal.logging.log4j.LocalizedMessage;
import org.apache.geode.internal.logging.log4j.LogMarker;

/**
 * To change this generated comment edit the template variable "typecomment":
 * Window>Preferences>Java>Templates. To enable and disable the creation of type comments go to
 * Window>Preferences>Java>Code Generation.
 */
public class DistributionChannel {
  private static final Logger logger = LogService.getLogger();

  private MembershipManager membershipManager;

  /**
   * Constructor DistributionChannel for JGroups.
   * 
   * @param channel jgroups channel
   */
  public DistributionChannel(MembershipManager channel) {
    membershipManager = channel;
  }


  public InternalDistributedMember getLocalAddress() {
    return membershipManager.getLocalMember();
  }


  /**
   * @return the MembershipManager
   */
  public MembershipManager getMembershipManager() {
    return membershipManager;
  }



  /**
   * @return list of recipients who did not receive the message because they left the view (null if
   *         all received it or it was sent to {@link DistributionMessage#ALL_RECIPIENTS}).
   * @throws NotSerializableException If content cannot be serialized
   */
  public Set send(InternalDistributedMember[] destinations, DistributionMessage content,
      DistributionManager dm, DistributionStats stats) throws NotSerializableException {
    if (membershipManager == null) {
      logger.warn(LocalizedMessage.create(
          LocalizedStrings.DistributionChannel_ATTEMPTING_A_SEND_TO_A_DISCONNECTED_DISTRIBUTIONMANAGER));
      if (destinations.length == 1 && destinations[0] == DistributionMessage.ALL_RECIPIENTS)
        return null;
      HashSet result = new HashSet();
      for (int i = 0; i < destinations.length; i++)
        result.add(destinations[i]);
      return result;
    }
    return membershipManager.send(destinations, content, stats);
  }

  public void disconnect(boolean beforeJoined) {
    StringBuffer sb = new StringBuffer();
    sb.append("Disconnected from distribution channel ");

    long start = System.currentTimeMillis();

    logger.debug("DistributionChannel disconnecting with " + membershipManager + "; beforeJoined="
        + beforeJoined);

    if (membershipManager != null) {
      sb.append(membershipManager.getLocalMember());
      sb.append(" (took ");
      long begin = System.currentTimeMillis();
      if (beforeJoined) {
        membershipManager.uncleanShutdown("Failed to start distribution", null);
      } else {
        membershipManager.shutdown();
      }
      long delta = System.currentTimeMillis() - begin;
      sb.append(delta);
      sb.append("/");
    }
    membershipManager = null;

    if (logger.isTraceEnabled(LogMarker.DM)) {
      long delta = System.currentTimeMillis() - start;
      sb.append(delta);
      sb.append(" ms)");
      logger.trace(LogMarker.DM, sb);
    }
  }

  /**
   * Returns the id of this distribution channel. If this channel uses JavaGroups and the conduit to
   * communicate with others, then the port of the JavaGroups channel's
   * {@link InternalDistributedMember address} is returned.
   *
   * @since GemFire 3.0
   */
  public long getId() {
    MembershipManager mgr = this.membershipManager;
    if (mgr == null) {
      throw new DistributedSystemDisconnectedException(
          LocalizedStrings.DistributionChannel_I_NO_LONGER_HAVE_A_MEMBERSHIP_ID
              .toLocalizedString());
    }
    InternalDistributedMember moi = mgr.getLocalMember();
    if (moi == null) {
      throw new DistributedSystemDisconnectedException(
          LocalizedStrings.DistributionChannel_I_NO_LONGER_HAVE_A_MEMBERSHIP_ID.toLocalizedString(),
          membershipManager.getShutdownCause());
    }
    return moi.getPort();
  }

  public void setShutDown() {
    // this.shuttingDown = shuttingDown;
    if (membershipManager != null)
      membershipManager.setShutdown();
  }

  // private void sendViaJGroups(Serializable[] destinations,Address source,Serializable content,
  // boolean deliverToSender, int processorType,
  // DistributionManager dm)
  // throws ChannelNotConnectedException, ChannelClosedException {
  // Message msg = new Message(null, source, content);
  // msg.setDeliverToSender(deliverToSender);
  // msg.setProcessorType(processorType);
  // for (int i=0; i < destinations.length; i++) {
  // Address destination = (Address) destinations[i];
  // msg.setDest(destination);
  // jgroupsChannel.send(msg);
  // if (destination == null)
  // break;
  // }
  // }

}
