Java Message類代碼示例

import com.google.protobuf.Message; //導入依賴的package包/類
@Override
protected void encode(ChannelHandlerContext ctx, MessageOrBuilder in, List<Object> out)
        throws Exception {
    Message msg = in instanceof Message ? (Message) in : ((Message.Builder) in).build();

    int typeId = register.getTypeId(msg.getClass());
    if (typeId == Integer.MIN_VALUE) {
        throw new IllegalArgumentException("Unrecognisable message type, maybe not registered! ");
    }
    byte[] messageData = msg.toByteArray();

    if (messageData.length <= 0) {
        out.add(ByteBufAllocator.DEFAULT.heapBuffer().writeInt(typeId)
                .writeInt(0));
        return;
    }

    ByteArrayOutputStream bos = new ByteArrayOutputStream();
    GZIPOutputStream def = new GZIPOutputStream(bos);
    def.write(messageData);
    def.flush();
    def.close();
    byte[] compressedData = bos.toByteArray();
    out.add(ByteBufAllocator.DEFAULT.heapBuffer().writeInt(typeId).writeInt(compressedData.length)
            .writeBytes(compressedData));
}
 

import com.google.protobuf.Message; //導入依賴的package包/類
public static WsPacket decodeJson(String stringResult) {
	try {

		JSONObject jsObj = JSONObject.fromObject(stringResult);
		String wsOpCode = jsObj.getString(WSOPCODE);
		if (wsOpCode == null) {
			if (WSManager.log != null) {
				WSManager.log.warn("數據為：" + stringResult + "，無wsOpCode");
			}
			return null;
		}
		if (!WSManager.wsOpCodeMap.containsKey(wsOpCode)) {
			if (WSManager.log != null) {
				WSManager.log.warn("wsOpCode為：" + wsOpCode + "無對應解析，請及時解決");
			}
			return null;
		}
		Class<?> className = WSManager.wsOpCodeMap.get(wsOpCode);

		Method buildM = className.getDeclaredMethod("newBuilder");
		AbstractMessage.Builder<?> builder = (Builder<?>) buildM.invoke(null);
		Message data = PacketUtils.jsonToProtoBuf(stringResult, builder);
		WsPacket wsPacket = new WsPacket(wsOpCode, data);
		return wsPacket;
	} catch (Exception e) {
		if (WSManager.log != null) {
			WSManager.log.error("json轉換成protobuf異常", e);
		}
		return null;
	}
}
 

import com.google.protobuf.Message; //導入依賴的package包/類
private void mergeMapField(FieldDescriptor field, JsonElement json, Message.Builder builder)
    throws InvalidProtocolBufferException {
  if (!(json instanceof JsonObject)) {
    throw new InvalidProtocolBufferException("Expect a map object but found: " + json);
  }
  Descriptor type = field.getMessageType();
  FieldDescriptor keyField = type.findFieldByName("key");
  FieldDescriptor valueField = type.findFieldByName("value");
  if (keyField == null || valueField == null) {
    throw new InvalidProtocolBufferException("Invalid map field: " + field.getFullName());
  }
  JsonObject object = (JsonObject) json;
  for (Map.Entry<String, JsonElement> entry : object.entrySet()) {
    Message.Builder entryBuilder = builder.newBuilderForField(field);
    Object key = parseFieldValue(keyField, new JsonPrimitive(entry.getKey()), entryBuilder);
    Object value = parseFieldValue(valueField, entry.getValue(), entryBuilder);
    if (value == null) {
      throw new InvalidProtocolBufferException("Map value cannot be null.");
    }
    entryBuilder.setField(keyField, key);
    entryBuilder.setField(valueField, value);
    builder.addRepeatedField(field, entryBuilder.build());
  }
}
 

import com.google.protobuf.Message; //導入依賴的package包/類
protected List<ByteBuffer> prepareResponse(Object value, Status status, String errorClass,
    String error) {
  ByteBufferOutputStream buf = new ByteBufferOutputStream();
  DataOutputStream out = new DataOutputStream(buf);
  try {
    RpcResponseHeader.Builder builder = RpcResponseHeader.newBuilder();
    builder.setStatus(status);
    builder.build().writeDelimitedTo(out);
    if (error != null) {
      RpcException.Builder b = RpcException.newBuilder();
      b.setExceptionName(errorClass);
      b.setStackTrace(error);
      b.build().writeDelimitedTo(out);
    } else {
      if (value != null) {
        ((Message) value).writeDelimitedTo(out);
      }
    }
  } catch (IOException e) {
    LOG.warn("Exception while creating response " + e);
  }
  return buf.getBufferList();
}
 

import com.google.protobuf.Message; //導入依賴的package包/類
@SuppressWarnings("unchecked")
private static Object buildValue(
    Message.Builder parentBuilder, FieldDescriptor field, Object value) {
  if (field.getType() == FieldDescriptor.Type.MESSAGE) {
    if (field.isRepeated()) {}
    Message.Builder fieldBuilder = parentBuilder.newBuilderForField(field);
    return buildMessage(fieldBuilder, (Map<String, Object>) value);
  } else if (field.getType() == FieldDescriptor.Type.ENUM) {
    return field.getEnumType().findValueByName((String) value);
  } else {
    switch (field.getType()) {
      case FLOAT: // float is a special case
        return Float.valueOf(value.toString());
      default:
        return value;
    }
  }
}
 

import com.google.protobuf.Message; //導入依賴的package包/類
@Override
public void run(Message response) {
    if (eventLoopCallback == null) {
        throw new IllegalStateException("response callback must only be called once");
    }

    RpcResponse.Builder responseMessage = RpcResponse.newBuilder();
    responseMessage.setSequenceNumber(sequence);
    assert controller.status != Protocol.Status.INVALID;
    responseMessage.setStatus(controller.status);
    if (response != null) {
        responseMessage.setResponse(response.toByteString());
    } else {
        // No message: we must have failed
        assert controller.status != Protocol.Status.OK;
    }
    if (controller.errorReason != null) {
        assert controller.status != Protocol.Status.OK;
        responseMessage.setErrorReason(controller.errorReason);
    }

    eventLoopCallback.writeResponse(responseMessage.build());
    eventLoopCallback = null;
}
 

import com.google.protobuf.Message; //導入依賴的package包/類
@SuppressWarnings("unchecked")
private JsonRpcResponse dispatchJsonRpcRequest(JsonRpcRequest rpcRequest, OrangeContext cxt) {
    ServiceMethodHandler handler = handlers.getMethodHandler(rpcRequest.getMethod());
    Message innerRequest = convertJsonToProtobuf(handler, rpcRequest);
    JsonRpcResponse jsonResponse = new JsonRpcResponse(rpcRequest.getId(), JsonNull.INSTANCE,
            JsonNull.INSTANCE, HttpServletResponse.SC_OK);
    JsonElement idElement = rpcRequest.getId();
    if (idElement == null) {
        jsonResponse.setId(new JsonPrimitive(-1));
    }
    try {
        Message innerResponse = invokeHandlerChain(rpcRequest.getMethod(), handler, innerRequest, cxt);
        jsonResponse.setResult(ProtobufUtil.protobufToJson(innerResponse));
    } catch (RpcCallException rpcEx) {
        logger.debug("Error processing request", rpcEx);
        jsonResponse.setError(rpcEx.toJson());
        jsonResponse.setStatusCode(rpcEx.getCategory().getHttpStatus());
    } catch (Exception ex) {
        logger.warn("Error processing request", ex);
        if (ex.getMessage() != null) {
            jsonResponse.setError(new JsonPrimitive(ex.getMessage()));
        }
        jsonResponse.setStatusCode(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
    }
    return jsonResponse;
}
 

import com.google.protobuf.Message; //導入依賴的package包/類
@Override
@InterfaceAudience.Private
public void callMethod(Descriptors.MethodDescriptor method,
                       RpcController controller,
                       Message request, Message responsePrototype,
                       RpcCallback<Message> callback) {
  Message response = null;
  try {
    response = callExecService(controller, method, request, responsePrototype);
  } catch (IOException ioe) {
    LOG.warn("Call failed on IOException", ioe);
    ResponseConverter.setControllerException(controller, ioe);
  }
  if (callback != null) {
    callback.run(response);
  }
}
 

import com.google.protobuf.Message; //導入依賴的package包/類
@edu.umd.cs.findbugs.annotations.SuppressWarnings(value="NP_NULL_ON_SOME_PATH",
    justification="Can't figure why this complaint is happening... see below")
Call(int id, final BlockingService service, final MethodDescriptor md, RequestHeader header,
     Message param, CellScanner cellScanner, Connection connection, Responder responder,
     long size, TraceInfo tinfo, final InetAddress remoteAddress) {
  this.id = id;
  this.service = service;
  this.md = md;
  this.header = header;
  this.param = param;
  this.cellScanner = cellScanner;
  this.connection = connection;
  this.timestamp = System.currentTimeMillis();
  this.response = null;
  this.responder = responder;
  this.isError = false;
  this.size = size;
  this.tinfo = tinfo;
  this.user = connection == null? null: connection.user; // FindBugs: NP_NULL_ON_SOME_PATH
  this.remoteAddress = remoteAddress;
  this.retryImmediatelySupported =
      connection == null? null: connection.retryImmediatelySupported;
}
 

import com.google.protobuf.Message; //導入依賴的package包/類
Message createProtoBuf(
    Descriptor descriptor, Message.Builder builder, Map<String, Object> input) {

  if (input == null) {
    return builder.build();
  }
  for (FieldDescriptor field : descriptor.getFields()) {
    String fieldName = field.getName();

    if (!input.containsKey(fieldName)) {
      // TODO: validate required fields
      continue;
    }

    if (field.isRepeated()) {
      List<Object> values = (List<Object>) input.get(fieldName);
      for (Object value : values) {
        builder.addRepeatedField(field, getValueForField(field, value, builder));
      }
    } else {
      builder.setField(field, getValueForField(field, input.get(fieldName), builder));
    }
  }

  return builder.build();
}
 

import com.google.protobuf.Message; //導入依賴的package包/類
public static io.grpc.MethodDescriptor<Message, Message> createMethodDescriptor(Class<?> clzz,
    Method method) {
  String clzzName = clzz.getName();
  String methodName = method.getName();
  GrpcMethodType grpcMethodType = method.getAnnotation(GrpcMethodType.class);
  Message argsReq = createDefaultInstance(grpcMethodType.requestType());
  Message argsRep = createDefaultInstance(grpcMethodType.responseType());
  return io.grpc.MethodDescriptor.<Message, Message>newBuilder()
      .setType(grpcMethodType.methodType())//
      .setFullMethodName(io.grpc.MethodDescriptor.generateFullMethodName(clzzName, methodName))//
      .setRequestMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(argsReq))//
      .setResponseMarshaller(io.grpc.protobuf.ProtoUtils.marshaller(argsRep))//
      .setSafe(false)//
      .setIdempotent(false)//
      .build();
}
 

import com.google.protobuf.Message; //導入依賴的package包/類
private void handleValue(Tokenizer tokenizer,
                                ExtensionRegistry extensionRegistry,
                                Message.Builder builder,
                                FieldDescriptor field,
                                ExtensionRegistry.ExtensionInfo extension,
                                boolean unknown) throws ParseException {

    Object value = null;
    if (field.getJavaType() == FieldDescriptor.JavaType.MESSAGE) {
        value = handleObject(tokenizer, extensionRegistry, builder, field, extension, unknown);
    } else {
        value = handlePrimitive(tokenizer, field);
    }
    if (value != null) {
        if (field.isRepeated()) {
            builder.addRepeatedField(field, value);
        } else {
            builder.setField(field, value);
        }
    }
}
 

import com.google.protobuf.Message; //導入依賴的package包/類
private void merge(JsonElement json, Message.Builder builder)
    throws InvalidProtocolBufferException {
    
    if (typeParsers.containsKey(builder.getDescriptorForType().getFullName()))
    {
        typeParsers.get(builder.getDescriptorForType().getFullName()).merge(json, builder);
        return;
    }
    
    WellKnownTypeParser specialParser =
            wellKnownTypeParsers.get(builder.getDescriptorForType().getFullName());
    if (specialParser != null) {
        specialParser.merge(this, json, builder);
        return;
    }
  
    mergeMessage(json, builder, false);
}
 

import com.google.protobuf.Message; //導入依賴的package包/類
@Override ExecuteResponse deserialize(Message genericMsg) {
  final Responses.ExecuteResponse msg = ProtobufService.castProtobufMessage(genericMsg,
      Responses.ExecuteResponse.class);

  List<Responses.ResultSetResponse> msgResults = msg.getResultsList();
  List<ResultSetResponse> copiedResults = new ArrayList<>(msgResults.size());

  for (Responses.ResultSetResponse msgResult : msgResults) {
    copiedResults.add(ResultSetResponse.fromProto(msgResult));
  }

  RpcMetadataResponse metadata = null;
  if (msg.hasField(METADATA_DESCRIPTOR)) {
    metadata = RpcMetadataResponse.fromProto(msg.getMetadata());
  }

  return new ExecuteResponse(copiedResults, msg.getMissingStatement(), metadata);
}
 

import com.google.protobuf.Message; //導入依賴的package包/類
/**
 * Make a call, passing <code>param</code>, to the IPC server running at <code>address</code>
 * which is servicing the <code>protocol</code> protocol, with the <code>ticket</code>
 * credentials, returning the value. Throws exceptions if there are network problems or if the
 * remote code threw an exception.
 */
public Message call(RpcRequestBody requestBody, Class<? extends VersionedProtocol> protocol,
                    int rpcTimeout, Callback<Message> callback) throws Exception {
  ConnectionHeader.Builder builder = ConnectionHeader.newBuilder();
  builder.setProtocol(protocol == null ? "" : protocol.getName());
  ConnectionHeader connectionHeader = builder.build();

  RpcRequestHeader.Builder headerBuilder = RPCProtos.RpcRequestHeader.newBuilder();

  RpcRequestHeader rpcHeader = headerBuilder.build();

  ByteBufferOutputStream bbo = new ByteBufferOutputStream();
  connectionHeader.writeDelimitedTo(bbo);
  rpcHeader.writeDelimitedTo(bbo);
  requestBody.writeDelimitedTo(bbo);
  CallFuture<Message> future = new CallFuture<Message>(callback);
  if (LOG.isDebugEnabled()) {
    LOG.debug("send message, " + requestBody.getMethodName() + " , channel: " + channel);
  }

  transceive(bbo.getBufferList(), new TransceiverCallback<Message>(requestBody, protocol, future));

  if (callback == null) {
    try {
      return future.get(conf.getLong(AngelConf.ANGEL_READ_TIMEOUT_SEC,
              AngelConf.DEFAULT_ANGEL_READ_TIMEOUT_SEC), TimeUnit.SECONDS);
    } catch (java.util.concurrent.TimeoutException e) {
      if (LOG.isDebugEnabled()) {
        LOG.debug("timeout for: send message, " + requestBody.getMethodName() + " , channel: "
                + channel);
      }
      disconnect(this.channel, true, true, e);
      throw e;
    }
  }
  return null;
}