Examples with Response com.alibaba.dubbo.remoting.exchange.Response used on opensource projects

Example 6 with Response

use of com.alibaba.dubbo.remoting.exchange.Response in project dubbo by alibaba.

the class HeaderExchangeHandlerTest method test_received_request_twoway.

@Test
public void test_received_request_twoway() throws RemotingException {
    final Person requestdata = new Person("charles");
    final Request request = new Request();
    request.setTwoWay(true);
    request.setData(requestdata);
    final AtomicInteger count = new AtomicInteger(0);
    final Channel mchannel = new MockedChannel() {

        @Override
        public void send(Object message) throws RemotingException {
            Response res = (Response) message;
            Assert.assertEquals(request.getId(), res.getId());
            Assert.assertEquals(request.getVersion(), res.getVersion());
            Assert.assertEquals(Response.OK, res.getStatus());
            Assert.assertEquals(requestdata, res.getResult());
            Assert.assertEquals(null, res.getErrorMessage());
            count.incrementAndGet();
        }
    };
    ExchangeHandler exhandler = new MockedExchangeHandler() {

        @Override
        public Object reply(ExchangeChannel channel, Object request) throws RemotingException {
            return request;
        }

        public void received(Channel channel, Object message) throws RemotingException {
            Assert.fail();
        }
    };
    HeaderExchangeHandler hexhandler = new HeaderExchangeHandler(exhandler);
    hexhandler.received(mchannel, request);
    Assert.assertEquals(1, count.get());
}

Example 7 with Response

use of com.alibaba.dubbo.remoting.exchange.Response in project dubbo by alibaba.

the class HeaderExchangeHandlerTest method test_received_request_twoway_error_reqeustBroken.

@Test
public void test_received_request_twoway_error_reqeustBroken() throws RemotingException {
    final Request request = new Request();
    request.setTwoWay(true);
    request.setData(new BizException());
    request.setBroken(true);
    final AtomicInteger count = new AtomicInteger(0);
    final Channel mchannel = new MockedChannel() {

        @Override
        public void send(Object message) throws RemotingException {
            Response res = (Response) message;
            Assert.assertEquals(request.getId(), res.getId());
            Assert.assertEquals(request.getVersion(), res.getVersion());
            Assert.assertEquals(Response.BAD_REQUEST, res.getStatus());
            Assert.assertNull(res.getResult());
            Assert.assertTrue(res.getErrorMessage().contains(BizException.class.getName()));
            count.incrementAndGet();
        }
    };
    HeaderExchangeHandler hexhandler = new HeaderExchangeHandler(new MockedExchangeHandler());
    hexhandler.received(mchannel, request);
    Assert.assertEquals(1, count.get());
}

Example 8 with Response

use of com.alibaba.dubbo.remoting.exchange.Response in project dubbo by alibaba.

the class DeprecatedExchangeCodec method decodeBody.

protected Object decodeBody(Channel channel, InputStream is, byte[] header) throws IOException {
    byte flag = header[2], proto = (byte) (flag & SERIALIZATION_MASK);
    Serialization s = CodecSupport.getSerialization(channel.getUrl(), proto);
    ObjectInput in = s.deserialize(channel.getUrl(), is);
    // 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(Response.HEARTBEAT_EVENT);
        }
        // get status.
        byte status = header[3];
        res.setStatus(status);
        if (status == Response.OK) {
            try {
                Object data;
                if (res.isHeartbeat()) {
                    data = decodeHeartbeatData(channel, in);
                } else if (res.isEvent()) {
                    data = decodeEventData(channel, in);
                } else {
                    data = decodeResponseData(channel, in, getRequestData(id));
                }
                res.setResult(data);
            } catch (Throwable t) {
                res.setStatus(Response.CLIENT_ERROR);
                res.setErrorMessage(StringUtils.toString(t));
            }
        } else {
            res.setErrorMessage(in.readUTF());
        }
        return res;
    } else {
        // decode request.
        Request req = new Request(id);
        req.setVersion("2.0.0");
        req.setTwoWay((flag & FLAG_TWOWAY) != 0);
        if ((flag & FLAG_EVENT) != 0) {
            req.setEvent(Request.HEARTBEAT_EVENT);
        }
        try {
            Object data;
            if (req.isHeartbeat()) {
                data = decodeHeartbeatData(channel, in);
            } else if (req.isEvent()) {
                data = decodeEventData(channel, in);
            } else {
                data = decodeRequestData(channel, in);
            }
            req.setData(data);
        } catch (Throwable t) {
            // bad request
            req.setBroken(true);
            req.setData(t);
        }
        return req;
    }
}

Example 9 with Response

use of com.alibaba.dubbo.remoting.exchange.Response in project dubbo by alibaba.

the class DeprecatedExchangeCodec method encodeResponse.

protected void encodeResponse(Channel channel, OutputStream os, Response res) throws IOException {
    try {
        Serialization serialization = CodecSupport.getSerialization(channel.getUrl());
        // header.
        byte[] header = new byte[HEADER_LENGTH];
        // set magic number.
        Bytes.short2bytes(MAGIC, header);
        // set request and serialization flag.
        header[2] = serialization.getContentTypeId();
        if (res.isHeartbeat())
            header[2] |= FLAG_EVENT;
        // set response status.
        byte status = res.getStatus();
        header[3] = status;
        // set request id.
        Bytes.long2bytes(res.getId(), header, 4);
        UnsafeByteArrayOutputStream bos = new UnsafeByteArrayOutputStream(1024);
        ObjectOutput out = serialization.serialize(channel.getUrl(), bos);
        // encode response data or error message.
        if (status == Response.OK) {
            if (res.isHeartbeat()) {
                encodeHeartbeatData(channel, out, res.getResult());
            } else {
                encodeResponseData(channel, out, res.getResult());
            }
        } else
            out.writeUTF(res.getErrorMessage());
        out.flushBuffer();
        bos.flush();
        bos.close();
        byte[] data = bos.toByteArray();
        checkPayload(channel, data.length);
        Bytes.int2bytes(data.length, header, 12);
        // write
        // write header.
        os.write(header);
        // write data.
        os.write(data);
    } catch (Throwable t) {
        // send error message to Consumer, otherwise, Consumer will wait until timeout.
        if (!res.isEvent() && res.getStatus() != Response.BAD_RESPONSE) {
            try {
                // FIXME log error info in Codec and put all error handle logic in IoHanndler?
                logger.warn("Fail to encode response: " + res + ", send bad_response info instead, cause: " + t.getMessage(), t);
                Response r = new Response(res.getId(), res.getVersion());
                r.setStatus(Response.BAD_RESPONSE);
                r.setErrorMessage("Failed to send response: " + res + ", cause: " + StringUtils.toString(t));
                channel.send(r);
                return;
            } catch (RemotingException e) {
                logger.warn("Failed to send bad_response info back: " + res + ", cause: " + e.getMessage(), e);
            }
        }
        // Rethrow exception
        if (t instanceof IOException) {
            throw (IOException) t;
        } else if (t instanceof RuntimeException) {
            throw (RuntimeException) t;
        } else if (t instanceof Error) {
            throw (Error) t;
        } else {
            throw new RuntimeException(t.getMessage(), t);
        }
    }
}

Example 10 with Response

use of com.alibaba.dubbo.remoting.exchange.Response in project dubbo by alibaba.

the class ExchangeCodec method encodeResponse.

protected void encodeResponse(Channel channel, ChannelBuffer buffer, Response res) throws IOException {
    int savedWriteIndex = buffer.writerIndex();
    try {
        Serialization serialization = getSerialization(channel);
        // header.
        byte[] header = new byte[HEADER_LENGTH];
        // set magic number.
        Bytes.short2bytes(MAGIC, header);
        // set request and serialization flag.
        header[2] = serialization.getContentTypeId();
        if (res.isHeartbeat())
            header[2] |= FLAG_EVENT;
        // set response status.
        byte status = res.getStatus();
        header[3] = status;
        // set request id.
        Bytes.long2bytes(res.getId(), header, 4);
        buffer.writerIndex(savedWriteIndex + HEADER_LENGTH);
        ChannelBufferOutputStream bos = new ChannelBufferOutputStream(buffer);
        ObjectOutput out = serialization.serialize(channel.getUrl(), bos);
        // encode response data or error message.
        if (status == Response.OK) {
            if (res.isHeartbeat()) {
                encodeHeartbeatData(channel, out, res.getResult());
            } else {
                encodeResponseData(channel, out, res.getResult());
            }
        } else
            out.writeUTF(res.getErrorMessage());
        out.flushBuffer();
        if (out instanceof Cleanable) {
            ((Cleanable) out).cleanup();
        }
        bos.flush();
        bos.close();
        int len = bos.writtenBytes();
        checkPayload(channel, len);
        Bytes.int2bytes(len, header, 12);
        // write
        buffer.writerIndex(savedWriteIndex);
        // write header.
        buffer.writeBytes(header);
        buffer.writerIndex(savedWriteIndex + HEADER_LENGTH + len);
    } catch (Throwable t) {
        // clear buffer
        buffer.writerIndex(savedWriteIndex);
        // send error message to Consumer, otherwise, Consumer will wait till timeout.
        if (!res.isEvent() && res.getStatus() != Response.BAD_RESPONSE) {
            Response r = new Response(res.getId(), res.getVersion());
            r.setStatus(Response.BAD_RESPONSE);
            if (t instanceof ExceedPayloadLimitException) {
                logger.warn(t.getMessage(), t);
                try {
                    r.setErrorMessage(t.getMessage());
                    channel.send(r);
                    return;
                } catch (RemotingException e) {
                    logger.warn("Failed to send bad_response info back: " + t.getMessage() + ", cause: " + e.getMessage(), e);
                }
            } else {
                // FIXME log error message in Codec and handle in caught() of IoHanndler?
                logger.warn("Fail to encode response: " + res + ", send bad_response info instead, cause: " + t.getMessage(), t);
                try {
                    r.setErrorMessage("Failed to send response: " + res + ", cause: " + StringUtils.toString(t));
                    channel.send(r);
                    return;
                } catch (RemotingException e) {
                    logger.warn("Failed to send bad_response info back: " + res + ", cause: " + e.getMessage(), e);
                }
            }
        }
        // Rethrow exception
        if (t instanceof IOException) {
            throw (IOException) t;
        } else if (t instanceof RuntimeException) {
            throw (RuntimeException) t;
        } else if (t instanceof Error) {
            throw (Error) t;
        } else {
            throw new RuntimeException(t.getMessage(), t);
        }
    }
}