XmppWriterImpl.java :  » EJB-Server » resin-4.0.7 » com » caucho » xmpp » Java Open Source

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resin 4.0.7 » com » caucho » xmpp » XmppWriterImpl.java
/*
 * Copyright (c) 1998-2010 Caucho Technology -- all rights reserved
 *
 * This file is part of Resin(R) Open Source
 *
 * Each copy or derived work must preserve the copyright notice and this
 * notice unmodified.
 *
 * Resin Open Source is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * Resin Open Source is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
 * of NON-INFRINGEMENT.  See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Resin Open Source; if not, write to the
 *
 *   Free Software Foundation, Inc.
 *   59 Temple Place, Suite 330
 *   Boston, MA 02111-1307  USA
 *
 * @author Scott Ferguson
 */

package com.caucho.xmpp;

import com.caucho.xmpp.im.Text;
import com.caucho.xmpp.im.ImPresence;
import com.caucho.xmpp.im.ImMessage;
import com.caucho.bam.*;
import com.caucho.vfs.*;
import com.caucho.xml.stream.*;
import java.io.Serializable;
import java.util.*;
import java.util.logging.*;
import javax.xml.stream.*;

/**
 * xmpp client to broker
 */
class XmppWriterImpl
{
  private static final Logger log
    = Logger.getLogger(XmppWriterImpl.class.getName());

  private static final String JABBERC_NS = "jabber:client";

  private XmppContext _xmppContext;
  private XmppStreamWriterImpl _out;

  XmppWriterImpl(XmppContext xmppContext, XmppStreamWriterImpl out)
  {
    _xmppContext = xmppContext;
    _out = out;
  }

  /**
   * Sends a message to the stream
   */
  public void message(String to,
                      String from,
                      Serializable value)
  {
    sendMessage(to, from, null, value, null);
  }

  /**
   * Sends a message to the stream
   */
  public void messageError(String to,
                           String from,
                           Serializable value,
                           ActorError error)
  {
    sendMessage(to, from, "error", value, error);
  }

  /**
   * Sends a message to the stream
   */
  private void sendMessage(String to,
                          String from,
                          String type,
                          Serializable value,
                          ActorError error)
  {
    try {
      XmppStreamWriterImpl out = _out;

      Text []subjects = null;
      Text []bodys = null;
      String thread = null;
      Serializable extra = null;
      Serializable []extras = null;
      
      if (value instanceof ImMessage) {
        ImMessage msg = (ImMessage) value;

        if (msg.getTo() != null)
          to = msg.getTo();

        if (msg.getFrom() != null)
          from = msg.getFrom();

        if (msg.getType() != null)
          type = msg.getType();

        subjects = msg.getSubjects();
        bodys = msg.getBodys();
        thread = msg.getThread();

        extras = msg.getExtra();
      }
      else if (value instanceof Serializable[]) {
        extras = (Serializable[]) value;
      }
      else {
        extra = value;
      }
      
      synchronized (out) {
  out.writeStartElement("", "message", JABBERC_NS);
  out.writeDefaultNamespace(JABBERC_NS);

  if (to != null)
    out.writeAttribute("to", to);

  if (from != null)
    out.writeAttribute("from", from);

  if (type != null)
    out.writeAttribute("type", type);

  if (subjects != null) {
    for (Text subject : subjects) {
      out.writeStartElement("subject");

      if (subject.getLang() != null)
        out.writeAttribute("xml", "http://xml.org", "lang", subject.getLang());
      
      out.writeCharacters(subject.getValue());
      out.writeEndElement(); // </subject>
    }
  }
  
  if (bodys != null) {
    for (Text body : bodys) {
      out.writeStartElement("body");

      if (body.getLang() != null)
        out.writeAttribute("xml", "http://xml.org", "lang",
         body.getLang());
      
      out.writeCharacters(body.getValue());
      out.writeEndElement(); // </body>
    }
  }

  if (thread != null) {
    out.writeStartElement("thread");
    out.writeCharacters(thread);
    out.writeEndElement(); // </thread>
  }

        if (extra != null) {
          out.writeValue(extra);
        }
        
  if (extras != null) {
    for (Serializable extraItem : extras) {
      out.writeValue(extraItem);
    }
  }

  out.writeEndElement(); // </message>

  out.flush();
      }

      if (log.isLoggable(Level.FINER)) {
  log.finer(this + " sendMessage to=" + to + " from=" + from
      + " msg=" + value);
      }
    } catch (Exception e) {
      throw new RuntimeException(e);
    }
  }

  /**
   * Sends a query get message to the stream
   */
  public void sendQuery(String id, String to, String from,
      Serializable value, String type,
                        ActorError error)
  {
    try {
      XmppStreamWriterImpl out = _out;

      synchronized (out) {
  out.writeStartElement("iq");
  out.writeDefaultNamespace(JABBERC_NS);

  out.writeAttribute("id", id);

  out.writeAttribute("type", type);

  if (to != null)
    out.writeAttribute("to", to);

  if (from != null)
    out.writeAttribute("from", from);

  out.writeValue(value);

  out.writeEndElement(); // </iq>

  out.flush();
      }

      if (log.isLoggable(Level.FINER)) {
  log.finer(this + " sendQuery type=" + type + " id=" + id
      + " to=" + to + " from=" + from
      + " query=" + value);
      }
    } catch (Exception e) {
      throw new RuntimeException(e);
    }
  }

  /**
   * Sends a presence message to the stream
   */
  void sendPresence(String to, String from,
        Serializable value,
        String type,
                    ActorError error)
  {
    try {
      XmppStreamWriterImpl out = _out;

      synchronized (out) {
  out.writeStartElement("presence");
  out.writeDefaultNamespace(JABBERC_NS);

  ImPresence imPresence = null;
        Text status = null;

        if (value instanceof ImPresence) {
          imPresence = (ImPresence) value;

          if (to == null)
            to = imPresence.getTo();

          if (from == null)
            from = imPresence.getFrom();

          status = imPresence.getStatus();
        }

  if (to != null)
    out.writeAttribute("to", to);

  if (from != null)
    out.writeAttribute("from", from);

  if (type != null)
    out.writeAttribute("type", type);

  if (status != null) {
    out.writeStartElement("status");

    if (status.getLang() != null)
      out.writeAttribute("xml", "http://xml.org", "lang",
             status.getLang());
      
    out.writeCharacters(status.getValue());
    out.writeEndElement(); // </status>
  }

        if (imPresence == null)
          out.writeValue(value);

  out.writeEndElement(); // </presence>

  out.flush();
      }

      if (log.isLoggable(Level.FINER)) {
  log.finer(this + " sendPresence type=" + type
      + " to=" + to + " from=" + from
      + " value=" + value);
      }
    } catch (Exception e) {
      throw new RuntimeException(e);
    }
  }

  @Override
  public String toString()
  {
    return getClass().getSimpleName() + "[" + "]";
  }
}
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