Examples with DefaultFullHttpResponse io.netty.handler.codec.http.DefaultFullHttpResponse used on opensource projects

Example 61 with DefaultFullHttpResponse

use of io.netty.handler.codec.http.DefaultFullHttpResponse in project hadoop by apache.

the class ExceptionHandler method exceptionCaught.

static DefaultFullHttpResponse exceptionCaught(Throwable cause) {
    Exception e = cause instanceof Exception ? (Exception) cause : new Exception(cause);
    if (LOG.isTraceEnabled()) {
        LOG.trace("GOT EXCEPTION", e);
    }
    //Convert exception
    if (e instanceof ParamException) {
        final ParamException paramexception = (ParamException) e;
        e = new IllegalArgumentException("Invalid value for webhdfs parameter \"" + paramexception.getParameterName() + "\": " + e.getCause().getMessage(), e);
    } else if (e instanceof ContainerException || e instanceof SecurityException) {
        e = toCause(e);
    } else if (e instanceof RemoteException) {
        e = ((RemoteException) e).unwrapRemoteException();
    }
    //Map response status
    final HttpResponseStatus s;
    if (e instanceof SecurityException) {
        s = FORBIDDEN;
    } else if (e instanceof AuthorizationException) {
        s = FORBIDDEN;
    } else if (e instanceof FileNotFoundException) {
        s = NOT_FOUND;
    } else if (e instanceof IOException) {
        s = FORBIDDEN;
    } else if (e instanceof UnsupportedOperationException) {
        s = BAD_REQUEST;
    } else if (e instanceof IllegalArgumentException) {
        s = BAD_REQUEST;
    } else {
        LOG.warn("INTERNAL_SERVER_ERROR", e);
        s = INTERNAL_SERVER_ERROR;
    }
    final byte[] js = JsonUtil.toJsonString(e).getBytes(Charsets.UTF_8);
    DefaultFullHttpResponse resp = new DefaultFullHttpResponse(HTTP_1_1, s, Unpooled.wrappedBuffer(js));
    resp.headers().set(CONTENT_TYPE, APPLICATION_JSON_UTF8);
    resp.headers().set(CONTENT_LENGTH, js.length);
    return resp;
}

Example 62 with DefaultFullHttpResponse

use of io.netty.handler.codec.http.DefaultFullHttpResponse in project hadoop by apache.

the class WebHdfsHandler method writeContinueHeader.

private static void writeContinueHeader(ChannelHandlerContext ctx) {
    DefaultHttpResponse r = new DefaultFullHttpResponse(HTTP_1_1, CONTINUE, Unpooled.EMPTY_BUFFER);
    ctx.writeAndFlush(r);
}

Example 63 with DefaultFullHttpResponse

use of io.netty.handler.codec.http.DefaultFullHttpResponse in project hadoop by apache.

the class FSImageHandler method exceptionCaught.

@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
    Exception e = cause instanceof Exception ? (Exception) cause : new Exception(cause);
    final String output = JsonUtil.toJsonString(e);
    ByteBuf content = Unpooled.wrappedBuffer(output.getBytes(Charsets.UTF_8));
    final DefaultFullHttpResponse resp = new DefaultFullHttpResponse(HTTP_1_1, INTERNAL_SERVER_ERROR, content);
    resp.headers().set(CONTENT_TYPE, APPLICATION_JSON_UTF8);
    if (e instanceof IllegalArgumentException) {
        resp.setStatus(BAD_REQUEST);
    } else if (e instanceof FileNotFoundException) {
        resp.setStatus(NOT_FOUND);
    } else if (e instanceof IOException) {
        resp.setStatus(FORBIDDEN);
    }
    resp.headers().set(CONTENT_LENGTH, resp.content().readableBytes());
    resp.headers().set(CONNECTION, CLOSE);
    ctx.write(resp).addListener(ChannelFutureListener.CLOSE);
}

Example 64 with DefaultFullHttpResponse

use of io.netty.handler.codec.http.DefaultFullHttpResponse in project hadoop by apache.

the class FSImageHandler method channelRead0.

@Override
public void channelRead0(ChannelHandlerContext ctx, HttpRequest request) throws Exception {
    if (request.getMethod() != HttpMethod.GET) {
        DefaultHttpResponse resp = new DefaultHttpResponse(HTTP_1_1, METHOD_NOT_ALLOWED);
        resp.headers().set(CONNECTION, CLOSE);
        ctx.write(resp).addListener(ChannelFutureListener.CLOSE);
        return;
    }
    QueryStringDecoder decoder = new QueryStringDecoder(request.getUri());
    final String op = getOp(decoder);
    final String content;
    String path = getPath(decoder);
    switch(op) {
        case "GETFILESTATUS":
            content = image.getFileStatus(path);
            break;
        case "LISTSTATUS":
            content = image.listStatus(path);
            break;
        case "GETACLSTATUS":
            content = image.getAclStatus(path);
            break;
        case "GETXATTRS":
            List<String> names = getXattrNames(decoder);
            String encoder = getEncoder(decoder);
            content = image.getXAttrs(path, names, encoder);
            break;
        case "LISTXATTRS":
            content = image.listXAttrs(path);
            break;
        case "GETCONTENTSUMMARY":
            content = image.getContentSummary(path);
            break;
        default:
            throw new IllegalArgumentException("Invalid value for webhdfs parameter" + " \"op\"");
    }
    LOG.info("op=" + op + " target=" + path);
    DefaultFullHttpResponse resp = new DefaultFullHttpResponse(HTTP_1_1, HttpResponseStatus.OK, Unpooled.wrappedBuffer(content.getBytes(Charsets.UTF_8)));
    resp.headers().set(CONTENT_TYPE, APPLICATION_JSON_UTF8);
    resp.headers().set(CONTENT_LENGTH, resp.content().readableBytes());
    resp.headers().set(CONNECTION, CLOSE);
    ctx.write(resp).addListener(ChannelFutureListener.CLOSE);
}

Example 65 with DefaultFullHttpResponse

use of io.netty.handler.codec.http.DefaultFullHttpResponse in project camel by apache.

the class DefaultNettyHttpBinding method toNettyResponse.

@Override
public HttpResponse toNettyResponse(Message message, NettyHttpConfiguration configuration) throws Exception {
    LOG.trace("toNettyResponse: {}", message);
    // the message body may already be a Netty HTTP response
    if (message.getBody() instanceof HttpResponse) {
        return (HttpResponse) message.getBody();
    }
    Object body = message.getBody();
    Exception cause = message.getExchange().getException();
    // support bodies as native Netty
    ByteBuf buffer;
    // the response code is 200 for OK and 500 for failed
    boolean failed = message.getExchange().isFailed();
    int defaultCode = failed ? 500 : 200;
    int code = message.getHeader(Exchange.HTTP_RESPONSE_CODE, defaultCode, int.class);
    LOG.trace("HTTP Status Code: {}", code);
    // if there was an exception then use that as body
    if (cause != null) {
        if (configuration.isTransferException()) {
            // we failed due an exception, and transfer it as java serialized object
            ByteArrayOutputStream bos = new ByteArrayOutputStream();
            ObjectOutputStream oos = new ObjectOutputStream(bos);
            oos.writeObject(cause);
            oos.flush();
            IOHelper.close(oos, bos);
            // the body should be the serialized java object of the exception
            body = NettyConverter.toByteBuffer(bos.toByteArray());
            // force content type to be serialized java object
            message.setHeader(Exchange.CONTENT_TYPE, NettyHttpConstants.CONTENT_TYPE_JAVA_SERIALIZED_OBJECT);
        } else {
            // we failed due an exception so print it as plain text
            StringWriter sw = new StringWriter();
            PrintWriter pw = new PrintWriter(sw);
            cause.printStackTrace(pw);
            // the body should then be the stacktrace
            body = NettyConverter.toByteBuffer(sw.toString().getBytes());
            // force content type to be text/plain as that is what the stacktrace is
            message.setHeader(Exchange.CONTENT_TYPE, "text/plain");
        }
        // and mark the exception as failure handled, as we handled it by returning it as the response
        ExchangeHelper.setFailureHandled(message.getExchange());
    }
    if (body instanceof ByteBuf) {
        buffer = (ByteBuf) body;
    } else {
        // try to convert to buffer first
        buffer = message.getBody(ByteBuf.class);
        if (buffer == null) {
            // fallback to byte array as last resort
            byte[] data = message.getBody(byte[].class);
            if (data != null) {
                buffer = NettyConverter.toByteBuffer(data);
            } else {
                // and if byte array fails then try String
                String str;
                if (body != null) {
                    str = message.getMandatoryBody(String.class);
                } else {
                    str = "";
                }
                buffer = NettyConverter.toByteBuffer(str.getBytes());
            }
        }
    }
    HttpResponse response = null;
    if (buffer != null) {
        response = new DefaultFullHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.valueOf(code), buffer);
        // We just need to reset the readerIndex this time
        if (buffer.readerIndex() == buffer.writerIndex()) {
            buffer.setIndex(0, buffer.writerIndex());
        }
        // TODO How to enable the chunk transport 
        int len = buffer.readableBytes();
        // set content-length
        response.headers().set(HttpHeaderNames.CONTENT_LENGTH.toString(), len);
        LOG.trace("Content-Length: {}", len);
    } else {
        response = new DefaultFullHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.valueOf(code));
    }
    TypeConverter tc = message.getExchange().getContext().getTypeConverter();
    // must use entrySet to ensure case of keys is preserved
    for (Map.Entry<String, Object> entry : message.getHeaders().entrySet()) {
        String key = entry.getKey();
        Object value = entry.getValue();
        // use an iterator as there can be multiple values. (must not use a delimiter)
        final Iterator<?> it = ObjectHelper.createIterator(value, null);
        while (it.hasNext()) {
            String headerValue = tc.convertTo(String.class, it.next());
            if (headerValue != null && headerFilterStrategy != null && !headerFilterStrategy.applyFilterToCamelHeaders(key, headerValue, message.getExchange())) {
                LOG.trace("HTTP-Header: {}={}", key, headerValue);
                response.headers().add(key, headerValue);
            }
        }
    }
    // set the content type in the response.
    String contentType = MessageHelper.getContentType(message);
    if (contentType != null) {
        // set content-type
        response.headers().set(HttpHeaderNames.CONTENT_TYPE.toString(), contentType);
        LOG.trace("Content-Type: {}", contentType);
    }
    // configure connection to accordingly to keep alive configuration
    // favor using the header from the message
    String connection = message.getHeader(HttpHeaderNames.CONNECTION.toString(), String.class);
    // Read the connection header from the exchange property
    if (connection == null) {
        connection = message.getExchange().getProperty(HttpHeaderNames.CONNECTION.toString(), String.class);
    }
    if (connection == null) {
        // fallback and use the keep alive from the configuration
        if (configuration.isKeepAlive()) {
            connection = HttpHeaderValues.KEEP_ALIVE.toString();
        } else {
            connection = HttpHeaderValues.CLOSE.toString();
        }
    }
    response.headers().set(HttpHeaderNames.CONNECTION.toString(), connection);
    // Just make sure we close the channel when the connection value is close
    if (connection.equalsIgnoreCase(HttpHeaderValues.CLOSE.toString())) {
        message.setHeader(NettyConstants.NETTY_CLOSE_CHANNEL_WHEN_COMPLETE, true);
    }
    LOG.trace("Connection: {}", connection);
    return response;
}