Examples with Response org.apache.dubbo.remoting.exchange.Response used on opensource projects

Example 36 with Response

use of org.apache.dubbo.remoting.exchange.Response in project dubbo by alibaba.

the class HeaderExchangeHandler method received.

@Override
public void received(Channel channel, Object message) throws RemotingException {
    final ExchangeChannel exchangeChannel = HeaderExchangeChannel.getOrAddChannel(channel);
    if (message instanceof Request) {
        // handle request.
        Request request = (Request) message;
        if (request.isEvent()) {
            handlerEvent(channel, request);
        } else {
            if (request.isTwoWay()) {
                handleRequest(exchangeChannel, request);
            } else {
                handler.received(exchangeChannel, request.getData());
            }
        }
    } else if (message instanceof Response) {
        handleResponse(channel, (Response) message);
    } else if (message instanceof String) {
        if (isClientSide(channel)) {
            Exception e = new Exception("Dubbo client can not supported string message: " + message + " in channel: " + channel + ", url: " + channel.getUrl());
            logger.error(e.getMessage(), e);
        } else {
            String echo = handler.telnet(channel, (String) message);
            if (echo != null && echo.length() > 0) {
                channel.send(echo);
            }
        }
    } else {
        handler.received(exchangeChannel, message);
    }
}

Example 37 with Response

use of org.apache.dubbo.remoting.exchange.Response in project dubbo by alibaba.

the class HeaderExchangeHandler method caught.

@Override
public void caught(Channel channel, Throwable exception) throws RemotingException {
    if (exception instanceof ExecutionException) {
        ExecutionException e = (ExecutionException) exception;
        Object msg = e.getRequest();
        if (msg instanceof Request) {
            Request req = (Request) msg;
            if (req.isTwoWay() && !req.isHeartbeat()) {
                Response res = new Response(req.getId(), req.getVersion());
                res.setStatus(Response.SERVER_ERROR);
                res.setErrorMessage(StringUtils.toString(e));
                channel.send(res);
                return;
            }
        }
    }
    ExchangeChannel exchangeChannel = HeaderExchangeChannel.getOrAddChannel(channel);
    try {
        handler.caught(exchangeChannel, exception);
    } finally {
        HeaderExchangeChannel.removeChannelIfDisconnected(channel);
    }
}

Example 38 with Response

use of org.apache.dubbo.remoting.exchange.Response in project dubbo by alibaba.

the class HeartbeatHandler method received.

@Override
public void received(Channel channel, Object message) throws RemotingException {
    setReadTimestamp(channel);
    if (isHeartbeatRequest(message)) {
        Request req = (Request) message;
        if (req.isTwoWay()) {
            Response res = new Response(req.getId(), req.getVersion());
            res.setEvent(HEARTBEAT_EVENT);
            channel.send(res);
            if (logger.isInfoEnabled()) {
                int heartbeat = channel.getUrl().getParameter(Constants.HEARTBEAT_KEY, 0);
                if (logger.isDebugEnabled()) {
                    logger.debug("Received heartbeat from remote channel " + channel.getRemoteAddress() + ", cause: The channel has no data-transmission exceeds a heartbeat period" + (heartbeat > 0 ? ": " + heartbeat + "ms" : ""));
                }
            }
        }
        return;
    }
    if (isHeartbeatResponse(message)) {
        if (logger.isDebugEnabled()) {
            logger.debug("Receive heartbeat response in thread " + Thread.currentThread().getName());
        }
        return;
    }
    handler.received(channel, message);
}

Example 39 with Response

use of org.apache.dubbo.remoting.exchange.Response in project dubbo by alibaba.

the class ExchangeCodec method decodeBody.

protected Object decodeBody(Channel channel, InputStream is, byte[] header) throws IOException {
    byte flag = header[2], proto = (byte) (flag & SERIALIZATION_MASK);
    // get request id.
    long id = Bytes.bytes2long(header, 4);
    if ((flag & FLAG_REQUEST) == 0) {
        // decode response.
        Response res = new Response(id);
        if ((flag & FLAG_EVENT) != 0) {
            res.setEvent(true);
        }
        // get status.
        byte status = header[3];
        res.setStatus(status);
        try {
            if (status == Response.OK) {
                Object data;
                if (res.isEvent()) {
                    byte[] eventPayload = CodecSupport.getPayload(is);
                    if (CodecSupport.isHeartBeat(eventPayload, proto)) {
                        // heart beat response data is always null;
                        data = null;
                    } else {
                        data = decodeEventData(channel, CodecSupport.deserialize(channel.getUrl(), new ByteArrayInputStream(eventPayload), proto), eventPayload);
                    }
                } else {
                    data = decodeResponseData(channel, CodecSupport.deserialize(channel.getUrl(), is, proto), getRequestData(id));
                }
                res.setResult(data);
            } else {
                res.setErrorMessage(CodecSupport.deserialize(channel.getUrl(), is, proto).readUTF());
            }
        } catch (Throwable t) {
            res.setStatus(Response.CLIENT_ERROR);
            res.setErrorMessage(StringUtils.toString(t));
        }
        return res;
    } else {
        // decode request.
        Request req = new Request(id);
        req.setVersion(Version.getProtocolVersion());
        req.setTwoWay((flag & FLAG_TWOWAY) != 0);
        if ((flag & FLAG_EVENT) != 0) {
            req.setEvent(true);
        }
        try {
            Object data;
            if (req.isEvent()) {
                byte[] eventPayload = CodecSupport.getPayload(is);
                if (CodecSupport.isHeartBeat(eventPayload, proto)) {
                    // heart beat response data is always null;
                    data = null;
                } else {
                    data = decodeEventData(channel, CodecSupport.deserialize(channel.getUrl(), new ByteArrayInputStream(eventPayload), proto), eventPayload);
                }
            } else {
                data = decodeRequestData(channel, CodecSupport.deserialize(channel.getUrl(), is, proto));
            }
            req.setData(data);
        } catch (Throwable t) {
            // bad request
            req.setBroken(true);
            req.setData(t);
        }
        return req;
    }
}