| /* |
| * |
| * Copyright 2015 gRPC authors. |
| * |
| * Licensed 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. |
| * |
| */ |
| |
| #ifndef NET_GRPC_NODE_CALL_H_ |
| #define NET_GRPC_NODE_CALL_H_ |
| |
| #include <memory> |
| #include <vector> |
| |
| #include <nan.h> |
| #include <node.h> |
| #include "grpc/grpc.h" |
| #include "grpc/support/log.h" |
| |
| #include "channel.h" |
| |
| namespace grpc { |
| namespace node { |
| |
| using std::unique_ptr; |
| using std::shared_ptr; |
| |
| v8::Local<v8::Value> nanErrorWithCode(const char *msg, grpc_call_error code); |
| |
| v8::Local<v8::Value> ParseMetadata(const grpc_metadata_array *metadata_array); |
| |
| bool CreateMetadataArray(v8::Local<v8::Object> metadata, |
| grpc_metadata_array *array); |
| |
| void DestroyMetadataArray(grpc_metadata_array *array); |
| |
| /* Wrapper class for grpc_call structs. */ |
| class Call : public Nan::ObjectWrap { |
| public: |
| static void Init(v8::Local<v8::Object> exports); |
| static bool HasInstance(v8::Local<v8::Value> val); |
| /* Wrap a grpc_call struct in a javascript object */ |
| static v8::Local<v8::Value> WrapStruct(grpc_call *call); |
| |
| void CompleteBatch(bool is_final_op); |
| |
| private: |
| explicit Call(grpc_call *call); |
| ~Call(); |
| |
| // Prevent copying |
| Call(const Call &); |
| Call &operator=(const Call &); |
| |
| void DestroyCall(); |
| |
| static NAN_METHOD(New); |
| static NAN_METHOD(StartBatch); |
| static NAN_METHOD(Cancel); |
| static NAN_METHOD(CancelWithStatus); |
| static NAN_METHOD(GetPeer); |
| static NAN_METHOD(SetCredentials); |
| static Nan::Callback *constructor; |
| // Used for typechecking instances of this javascript class |
| static Nan::Persistent<v8::FunctionTemplate> fun_tpl; |
| |
| grpc_call *wrapped_call; |
| // The number of ops that were started but not completed on this call |
| int pending_batches; |
| /* Indicates whether the "final" op on a call has completed. For a client |
| call, this is GRPC_OP_RECV_STATUS_ON_CLIENT and for a server call, this |
| is GRPC_OP_SEND_STATUS_FROM_SERVER */ |
| bool has_final_op_completed; |
| char *peer; |
| }; |
| |
| class Op { |
| public: |
| virtual v8::Local<v8::Value> GetNodeValue() const = 0; |
| virtual bool ParseOp(v8::Local<v8::Value> value, grpc_op *out) = 0; |
| virtual ~Op(); |
| v8::Local<v8::Value> GetOpType() const; |
| virtual bool IsFinalOp() = 0; |
| virtual void OnComplete(bool success) = 0; |
| |
| protected: |
| virtual std::string GetTypeString() const = 0; |
| }; |
| |
| typedef std::vector<unique_ptr<Op>> OpVec; |
| struct tag { |
| tag(Nan::Callback *callback, OpVec *ops, Call *call, |
| v8::Local<v8::Value> call_value); |
| ~tag(); |
| Nan::Callback *callback; |
| OpVec *ops; |
| Call *call; |
| Nan::Persistent<v8::Value, Nan::CopyablePersistentTraits<v8::Value>> |
| call_persist; |
| }; |
| |
| void DestroyTag(void *tag); |
| |
| void CompleteTag(void *tag, const char *error_message); |
| |
| } // namespace node |
| } // namespace grpc |
| |
| #endif // NET_GRPC_NODE_CALL_H_ |