/* * 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.vysper.mina.codec; import java.nio.charset.CharsetEncoder; import org.apache.mina.core.buffer.IoBuffer; import org.apache.mina.core.service.IoHandler; import org.apache.mina.core.session.IoSession; import org.apache.mina.filter.codec.ProtocolEncoder; import org.apache.mina.filter.codec.ProtocolEncoderOutput; import org.apache.vysper.charset.CharsetUtil; import org.apache.vysper.mina.XmppIoHandlerAdapter; import org.apache.vysper.xml.fragment.Renderer; import org.apache.vysper.xmpp.stanza.Stanza; import org.apache.vysper.xmpp.writer.StanzaWriter; import org.slf4j.Logger; import org.slf4j.LoggerFactory; /** * connects MINA low level protocol and session stanza writer * * @author The Apache MINA Project (dev@mina.apache.org) */ public class StanzaWriterProtocolEncoder implements ProtocolEncoder { private final Logger logger = LoggerFactory.getLogger(StanzaWriterProtocolEncoder.class); public void encode(IoSession ioSession, Object o, ProtocolEncoderOutput protocolEncoderOutput) throws Exception { if (!(o instanceof StanzaWriteInfo)) { throw new IllegalArgumentException("StanzaWriterProtocolEncoder only handles StanzaWriteInfo objects"); } StanzaWriteInfo stanzaWriteInfo = (StanzaWriteInfo) o; Stanza element = stanzaWriteInfo.getStanza(); Renderer renderer = new Renderer(element); IoBuffer byteBuffer = IoBuffer.allocate(16).setAutoExpand(true); if (stanzaWriteInfo.isWriteProlog()) byteBuffer.putString(StanzaWriter.XML_PROLOG, getSessionEncoder()); if (stanzaWriteInfo.isWriteOpeningElement()) byteBuffer.putString(renderer.getOpeningElement(), getSessionEncoder()); if (stanzaWriteInfo.isWriteContent()) byteBuffer.putString(renderer.getElementContent(), getSessionEncoder()); if (stanzaWriteInfo.isWriteClosingElement()) byteBuffer.putString(renderer.getClosingElement(), getSessionEncoder()); byteBuffer.flip(); protocolEncoderOutput.write(byteBuffer); } public void dispose(IoSession ioSession) throws Exception { final IoHandler handler = ioSession.getHandler(); if (handler instanceof XmppIoHandlerAdapter) { XmppIoHandlerAdapter xmppIoHandlerAdapter = (XmppIoHandlerAdapter)handler; xmppIoHandlerAdapter.sessionClosed(ioSession); logger.debug("terminated and disposed session id = " + ioSession.getId()); } else { logger.warn("unhandled StanzaWriterProtocolEncoder.dispose()"); } } public CharsetEncoder getSessionEncoder() { return CharsetUtil.UTF8_ENCODER; } }