Package com.tinkerpop.gremlin.driver.ser

Examples of com.tinkerpop.gremlin.driver.ser.MessageTextSerializer

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            if (webSocketFrame instanceof BinaryWebSocketFrame) {
                final BinaryWebSocketFrame tf = (BinaryWebSocketFrame) webSocketFrame;
                objects.add(serializer.deserializeResponse(tf.content()));
            } else {
                final TextWebSocketFrame tf = (TextWebSocketFrame) webSocketFrame;
                final MessageTextSerializer textSerializer = (MessageTextSerializer) serializer;
                objects.add(textSerializer.deserializeResponse(tf.text()));
            }
        } finally {
            ReferenceCountUtil.release(webSocketFrame);
        }
    }
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        final RequestMessage requestMessage = (RequestMessage) msg;
        try {
            if (binaryEncoding) {
                byteBuf.writeBytes(serializer.serializeRequestAsBinary(requestMessage, channelHandlerContext.alloc()));
            } else {
                final MessageTextSerializer textSerializer = (MessageTextSerializer) serializer;
                byteBuf.writeBytes(textSerializer.serializeRequestAsString(requestMessage).getBytes(CharsetUtil.UTF_8));
            }
        } catch (Exception ex) {
            logger.warn(String.format("An error occurred during serialization of this request [%s] - it could not be sent to the server.", requestMessage), ex);
        }
    }
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        try {
            if (binaryEncoding) {
                final ByteBuf encodedMessage = serializer.serializeRequestAsBinary(requestMessage, channelHandlerContext.alloc());
                objects.add(new BinaryWebSocketFrame(encodedMessage));
            } else {
                final MessageTextSerializer textSerializer = (MessageTextSerializer) serializer;
                objects.add(new TextWebSocketFrame(textSerializer.serializeRequestAsString(requestMessage)));
            }
        } catch (Exception ex) {
            logger.warn(String.format("An error occurred during serialization of this request [%s] - it could not be sent to the server.", requestMessage), ex);
        }
    }
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public class WsGremlinTextRequestDecoder extends MessageToMessageDecoder<TextWebSocketFrame> {

    @Override
    protected void decode(final ChannelHandlerContext channelHandlerContext, final TextWebSocketFrame frame, final List<Object> objects) throws Exception {
        // the default serializer must be a MessageTextSerializer instance to be compatible with this decoder
        final MessageTextSerializer serializer = (MessageTextSerializer) Serializers.DEFAULT_REQUEST_SERIALIZER;
        channelHandlerContext.channel().attr(StateKey.SERIALIZER).set(serializer);
        channelHandlerContext.channel().attr(StateKey.USE_BINARY).set(false);

        try {
            objects.add(serializer.deserializeRequest(frame.text()));
        } catch (SerializationException se) {
            objects.add(RequestMessage.INVALID);
        }
    }
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                    errorMeter.mark();
                }
            } else {
                // the expectation is that the GremlinTextRequestDecoder will have placed a MessageTextSerializer
                // instance on the channel.
                final MessageTextSerializer textSerializer = (MessageTextSerializer) serializer;
                if (responseMessage.getStatus().getCode().isSuccess())
                    byteBuf.writeBytes(textSerializer.serializeResponseAsString(responseMessage).getBytes(UTF8));
                else {
                    byteBuf.writeBytes(textSerializer.serializeResponseAsString(responseMessage).getBytes(UTF8));
                    final ResponseMessage terminator = ResponseMessage.build(responseMessage.getRequestId()).code(ResponseStatusCode.SUCCESS_TERMINATOR).create();
                    byteBuf.writeBytes(textSerializer.serializeResponseAsString(terminator).getBytes(UTF8));
                    errorMeter.mark();
                }
            }
        } catch (Exception ex) {
            errorMeter.mark();
            logger.warn("The result [{}] in the request {} could not be serialized and returned.", responseMessage.getResult(), responseMessage.getRequestId(), ex);
            final String errorMessage = String.format("Error during serialization: %s",
                    ex.getCause() != null ? ex.getCause().getMessage() : ex.getMessage());
            final ResponseMessage error = ResponseMessage.build(responseMessage.getRequestId())
                    .statusMessage(errorMessage)
                    .code(ResponseStatusCode.SERVER_ERROR_SERIALIZATION).create();
            if (useBinary) {
                channelHandlerContext.write(serializer.serializeResponseAsBinary(error, channelHandlerContext.alloc()));
                final ResponseMessage terminator = ResponseMessage.build(responseMessage.getRequestId()).code(ResponseStatusCode.SUCCESS_TERMINATOR).create();
                channelHandlerContext.writeAndFlush(serializer.serializeResponseAsBinary(terminator, channelHandlerContext.alloc()));
            } else {
                final MessageTextSerializer textSerializer = (MessageTextSerializer) serializer;
                channelHandlerContext.write(textSerializer.serializeResponseAsString(error));
                final ResponseMessage terminator = ResponseMessage.build(responseMessage.getRequestId()).code(ResponseStatusCode.SUCCESS_TERMINATOR).create();
                channelHandlerContext.writeAndFlush(textSerializer.serializeResponseAsString(terminator));
            }
        }
    }
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                return;
            }

            final String acceptString = Optional.ofNullable(req.headers().get("Accept")).orElse("application/json");
            final String accept = acceptString.equals("*/*") ? "application/json" : acceptString;
            final MessageTextSerializer serializer = (MessageTextSerializer) serializers.get(accept);
            if (null == serializer) {
                sendError(ctx, BAD_REQUEST, String.format("no serializer for requested Accept header: %s", accept));
                return;
            }

            try {
                logger.debug("Processing request containing script [{}] and bindings of [{}]", requestArguments.getValue0(), requestArguments.getValue1());
                final Timer.Context timerContext = evalOpTimer.time();
                final Object result = gremlinExecutor.eval(requestArguments.getValue0(), requestArguments.getValue2(), requestArguments.getValue1()).get();
                timerContext.stop();

                final ResponseMessage responseMessage = ResponseMessage.build(UUID.randomUUID())
                        .code(ResponseStatusCode.SUCCESS)
                        .result(IteratorUtil.convertToList(result)).create();

                final FullHttpResponse response = new DefaultFullHttpResponse(HTTP_1_1, OK, Unpooled.wrappedBuffer(
                        serializer.serializeResponseAsString(responseMessage).getBytes(UTF8)));
                response.headers().set(CONTENT_TYPE, accept);
                response.headers().set(CONTENT_LENGTH, response.content().readableBytes());

                // handle cors business
                final String origin = req.headers().get(ORIGIN);
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                    errorMeter.mark();
                }
            } else {
                // the expectation is that the GremlinTextRequestDecoder will have placed a MessageTextSerializer
                // instance on the channel.
                final MessageTextSerializer textSerializer = (MessageTextSerializer) serializer;

                final String serialized;

                // if the request came in on a session then the serialization must occur in that same thread.
                if (null == session)
                    serialized = textSerializer.serializeResponseAsString(o);
                else
                    serialized = session.getExecutor().submit(() -> textSerializer.serializeResponseAsString(o)).get();

                if (o.getStatus().getCode().isSuccess())
                    objects.add(new TextWebSocketFrame(true, 0, serialized));
                else {
                    objects.add(new TextWebSocketFrame(true, 0, serialized));
                    final ResponseMessage terminator = ResponseMessage.build(o.getRequestId()).code(ResponseStatusCode.SUCCESS_TERMINATOR).create();
                    objects.add(new TextWebSocketFrame(true, 0, textSerializer.serializeResponseAsString(terminator)));
                    errorMeter.mark();
                }
            }
        } catch (Exception ex) {
            errorMeter.mark();
            logger.warn("The result [{}] in the request {} could not be serialized and returned.", o.getResult(), o.getRequestId(), ex);
            final String errorMessage = String.format("Error during serialization: %s",
                    ex.getCause() != null ? ex.getCause().getMessage() : ex.getMessage());
            final ResponseMessage error = ResponseMessage.build(o.getRequestId())
                    .statusMessage(errorMessage)
                    .code(ResponseStatusCode.SERVER_ERROR_SERIALIZATION).create();
            if (useBinary) {
                channelHandlerContext.write(new BinaryWebSocketFrame(serializer.serializeResponseAsBinary(error, channelHandlerContext.alloc())));
                final ResponseMessage terminator = ResponseMessage.build(o.getRequestId()).code(ResponseStatusCode.SUCCESS_TERMINATOR).create();
                channelHandlerContext.writeAndFlush(new BinaryWebSocketFrame(serializer.serializeResponseAsBinary(terminator, channelHandlerContext.alloc())));
            } else {
                final MessageTextSerializer textSerializer = (MessageTextSerializer) serializer;
                channelHandlerContext.write(new TextWebSocketFrame(textSerializer.serializeResponseAsString(error)));
                final ResponseMessage terminator = ResponseMessage.build(o.getRequestId()).code(ResponseStatusCode.SUCCESS_TERMINATOR).create();
                channelHandlerContext.writeAndFlush(new TextWebSocketFrame(textSerializer.serializeResponseAsString(terminator)));
            }
        }
    }
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Related Classes of com.tinkerpop.gremlin.driver.ser.MessageTextSerializer

  • com.tinkerpop.gremlin.driver.handler.NioGremlinRequestEncoder
  • com.tinkerpop.gremlin.driver.handler.WebSocketGremlinRequestEncoder
  • com.tinkerpop.gremlin.driver.handler.WebSocketGremlinResponseDecoder
  • com.tinkerpop.gremlin.server.handler.HttpGremlinEndpointHandler
  • com.tinkerpop.gremlin.server.handler.NioGremlinResponseEncoder
  • com.tinkerpop.gremlin.server.handler.WsGremlinResponseEncoder
  • com.tinkerpop.gremlin.server.handler.WsGremlinTextRequestDecoder
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