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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

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/*
 * Copyright 2013 The Netty Project
 *
 * The Netty Project 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 io.netty.channel.rxtx;

import gnu.io.CommPort;
import gnu.io.CommPortIdentifier;
import gnu.io.SerialPort;
import io.netty.channel.ChannelPromise;
import io.netty.channel.oio.OioByteStreamChannel;

import java.net.SocketAddress;
import java.util.concurrent.TimeUnit;

import static io.netty.channel.rxtx.RxtxChannelOption.*;

/**
 * A channel to a serial device using the RXTX library.
 */
public class RxtxChannel extends OioByteStreamChannel {

    private static final RxtxDeviceAddress LOCAL_ADDRESS = new RxtxDeviceAddress("localhost");

    private final RxtxChannelConfig config;

    private boolean open = true;
    private RxtxDeviceAddress deviceAddress;
    private SerialPort serialPort;

    public RxtxChannel() {
        super(null);

        config = new DefaultRxtxChannelConfig(this);
    }

    @Override
    public RxtxChannelConfig config() {
        return config;
    }

    @Override
    public boolean isOpen() {
        return open;
    }

    @Override
    protected AbstractUnsafe newUnsafe() {
        return new RxtxUnsafe();
    }

    @Override
    protected void doConnect(SocketAddress remoteAddress, SocketAddress localAddress) throws Exception {
        RxtxDeviceAddress remote = (RxtxDeviceAddress) remoteAddress;
        final CommPortIdentifier cpi = CommPortIdentifier.getPortIdentifier(remote.value());
        final CommPort commPort = cpi.open(getClass().getName(), 1000);
        commPort.enableReceiveTimeout(config().getOption(READ_TIMEOUT));
        deviceAddress = remote;

        serialPort = (SerialPort) commPort;
    }

    protected void doInit() throws Exception {
        serialPort.setSerialPortParams(
            config().getOption(BAUD_RATE),
            config().getOption(DATA_BITS).value(),
            config().getOption(STOP_BITS).value(),
            config().getOption(PARITY_BIT).value()
        );
        serialPort.setDTR(config().getOption(DTR));
        serialPort.setRTS(config().getOption(RTS));

        activate(serialPort.getInputStream(), serialPort.getOutputStream());
    }

    @Override
    public RxtxDeviceAddress localAddress() {
        return (RxtxDeviceAddress) super.localAddress();
    }

    @Override
    public RxtxDeviceAddress remoteAddress() {
        return (RxtxDeviceAddress) super.remoteAddress();
    }

    @Override
    protected RxtxDeviceAddress localAddress0() {
        return LOCAL_ADDRESS;
    }

    @Override
    protected RxtxDeviceAddress remoteAddress0() {
        return deviceAddress;
    }

    @Override
    protected void doBind(SocketAddress localAddress) throws Exception {
        throw new UnsupportedOperationException();
    }

    @Override
    protected void doDisconnect() throws Exception {
        doClose();
    }

    @Override
    protected void doClose() throws Exception {
        open = false;
        try {
           super.doClose();
        } finally {
            if (serialPort != null) {
                serialPort.removeEventListener();
                serialPort.close();
                serialPort = null;
            }
        }
    }

    private final class RxtxUnsafe extends AbstractUnsafe {
        @Override
        public void connect(
                final SocketAddress remoteAddress,
                final SocketAddress localAddress, final ChannelPromise promise) {
            if (!promise.setUncancellable() || !ensureOpen(promise)) {
                return;
            }

            try {
                final boolean wasActive = isActive();
                doConnect(remoteAddress, localAddress);

                int waitTime = config().getOption(WAIT_TIME);
                if (waitTime > 0) {
                    eventLoop().schedule(new Runnable() {
                        @Override
                        public void run() {
                            try {
                                doInit();
                                safeSetSuccess(promise);
                                if (!wasActive && isActive()) {
                                    pipeline().fireChannelActive();
                                }
                            } catch (Throwable t) {
                                safeSetFailure(promise, t);
                                closeIfClosed();
                            }
                        }
                   }, waitTime, TimeUnit.MILLISECONDS);
                } else {
                    doInit();
                    safeSetSuccess(promise);
                    if (!wasActive && isActive()) {
                        pipeline().fireChannelActive();
                    }
                }
            } catch (Throwable t) {
                safeSetFailure(promise, t);
                closeIfClosed();
            }
        }
    }
}