org.eclipse.paho.client.mqttv3.internal.wire.MqttOutputStream.java Source code

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Here is the source code for org.eclipse.paho.client.mqttv3.internal.wire.MqttOutputStream.java

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/*******************************************************************************
 * Copyright (c) 2009, 2014 IBM Corp.
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * and Eclipse Distribution License v1.0 which accompany this distribution. 
 *
 * The Eclipse Public License is available at 
 *    http://www.eclipse.org/legal/epl-v10.html
 * and the Eclipse Distribution License is available at 
 *   http://www.eclipse.org/org/documents/edl-v10.php.
 *
 * Contributors:
 *    Dave Locke - initial API and implementation and/or initial documentation
 */
package org.eclipse.paho.client.mqttv3.internal.wire;

import java.io.BufferedOutputStream;
import java.io.IOException;
import java.io.OutputStream;

import org.apache.commons.io.output.CountingOutputStream;
import org.eclipse.paho.client.mqttv3.MqttException;
import org.eclipse.paho.client.mqttv3.internal.ClientComms;
import org.eclipse.paho.client.mqttv3.internal.ClientState;
import org.eclipse.paho.client.mqttv3.logging.Logger;
import org.eclipse.paho.client.mqttv3.logging.LoggerFactory;

import android.util.Log;

/**
 * An <code>MqttOutputStream</code> lets applications write instances of
 * <code>MqttWireMessage</code>. 
 */
public class MqttOutputStream extends OutputStream {
    private static final String CLASS_NAME = MqttOutputStream.class.getName();
    private static final Logger log = LoggerFactory.getLogger(LoggerFactory.MQTT_CLIENT_MSG_CAT, CLASS_NAME);

    private ClientState clientState = null;
    //private BufferedOutputStream out;
    private CountingOutputStream out;

    public MqttOutputStream(ClientState clientState, OutputStream out) {
        this.clientState = clientState;
        this.out = new CountingOutputStream(new BufferedOutputStream(out));
    }

    public void close() throws IOException {
        out.close();
    }

    public void flush() throws IOException {
        out.flush();
    }

    public void write(byte[] b) throws IOException {
        out.write(b);
        clientState.notifySentBytes(b.length);
    }

    public void write(byte[] b, int off, int len) throws IOException {
        out.write(b, off, len);
        clientState.notifySentBytes(len);
    }

    public void write(int b) throws IOException {
        out.write(b);
    }

    /**
     * Writes an <code>MqttWireMessage</code> to the stream.
     */
    public void write(MqttWireMessage message) throws IOException, MqttException {
        final String methodName = "write";
        byte[] bytes = message.getHeader();
        byte[] pl = message.getPayload();
        //      out.write(message.getHeader());
        //      out.write(message.getPayload());
        out.write(bytes, 0, bytes.length);
        clientState.notifySentBytes(bytes.length);

        int offset = 0;
        int chunckSize = 1024;
        while (offset < pl.length) {
            int length = Math.min(chunckSize, pl.length - offset);
            out.write(pl, offset, length);
            offset += chunckSize;
            clientState.notifySentBytes(length);
        }
        Log.i(ClientComms.LOG_COLLECTOR_TAG, "MQTT ==> :" + out.getByteCount());
        // @TRACE 500= sent {0}
        log.fine(CLASS_NAME, methodName, "500", new Object[] { message });
    }
}