| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF 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 org.apache.tinkerpop.gremlin.driver.ser.binary; |
| |
| import io.netty.buffer.ByteBuf; |
| import org.apache.tinkerpop.gremlin.driver.ser.NettyBufferFactory; |
| import org.apache.tinkerpop.gremlin.driver.message.RequestMessage; |
| import org.apache.tinkerpop.gremlin.driver.ser.SerializationException; |
| import org.apache.tinkerpop.gremlin.structure.io.Buffer; |
| import org.apache.tinkerpop.gremlin.structure.io.binary.GraphBinaryReader; |
| import org.apache.tinkerpop.gremlin.structure.io.binary.GraphBinaryWriter; |
| |
| import java.io.IOException; |
| import java.util.Map; |
| import java.util.UUID; |
| |
| public class RequestMessageSerializer { |
| private static NettyBufferFactory bufferFactory = new NettyBufferFactory(); |
| |
| public RequestMessage readValue(final ByteBuf byteBuf, final GraphBinaryReader context) throws SerializationException { |
| // Wrap netty's buffer |
| final Buffer buffer = bufferFactory.create(byteBuf); |
| |
| final int version = buffer.readByte() & 0xff; |
| |
| if (version >>> 7 != 1) { |
| // This is an indication that the request buffer was incorrectly built |
| // Or the buffer offsets are wrong |
| throw new SerializationException("The most significant bit should be set according to the format"); |
| } |
| |
| try { |
| final UUID id = context.readValue(buffer, UUID.class, false); |
| final String op = context.readValue(buffer, String.class, false); |
| final String processor = context.readValue(buffer, String.class, false); |
| |
| final RequestMessage.Builder builder = RequestMessage.build(op).overrideRequestId(id).processor(processor); |
| |
| final Map<String, Object> args = context.readValue(buffer, Map.class, false); |
| args.forEach(builder::addArg); |
| |
| return builder.create(); |
| } catch (IOException ex) { |
| throw new SerializationException(ex); |
| } |
| } |
| |
| public void writeValue(final RequestMessage value, final ByteBuf byteBuf, final GraphBinaryWriter context) throws SerializationException { |
| // Wrap netty's buffer |
| final Buffer buffer = bufferFactory.create(byteBuf); |
| |
| try { |
| // Version |
| buffer.writeByte(GraphBinaryWriter.VERSION_BYTE); |
| // RequestId |
| context.writeValue(value.getRequestId(), buffer, false); |
| // Op |
| context.writeValue(value.getOp(), buffer, false); |
| // Processor |
| context.writeValue(value.getProcessor(), buffer, false); |
| // Args |
| context.writeValue(value.getArgs(), buffer, false); |
| } catch (IOException ex) { |
| throw new SerializationException(ex); |
| } |
| } |
| } |