| /* |
| * |
| * Copyright 2015, Google Inc. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| */ |
| |
| #ifndef NET_GRPC_NODE_CALL_H_ |
| #define NET_GRPC_NODE_CALL_H_ |
| |
| #include <memory> |
| #include <vector> |
| |
| #include <node.h> |
| #include <nan.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; |
| |
| /** |
| * Helper function for throwing errors with a grpc_call_error value. |
| * Modified from the answer by Gus Goose to |
| * http://stackoverflow.com/questions/31794200. |
| */ |
| inline v8::Local<v8::Value> nanErrorWithCode(const char *msg, |
| grpc_call_error code) { |
| NanEscapableScope(); |
| v8::Local<v8::Object> err = NanError(msg).As<v8::Object>(); |
| err->Set(NanNew("code"), NanNew<v8::Uint32>(code)); |
| return NanEscapeScope(err); |
| } |
| |
| v8::Handle<v8::Value> ParseMetadata(const grpc_metadata_array *metadata_array); |
| |
| class PersistentHolder { |
| public: |
| explicit PersistentHolder(v8::Persistent<v8::Value> *persist) : |
| persist(persist) { |
| } |
| |
| ~PersistentHolder() { |
| NanDisposePersistent(*persist); |
| delete persist; |
| } |
| |
| private: |
| v8::Persistent<v8::Value> *persist; |
| }; |
| |
| struct Resources { |
| std::vector<unique_ptr<NanUtf8String> > strings; |
| std::vector<unique_ptr<PersistentHolder> > handles; |
| }; |
| |
| class Op { |
| public: |
| virtual ~Op(); |
| virtual v8::Handle<v8::Value> GetNodeValue() const = 0; |
| virtual bool ParseOp(v8::Handle<v8::Value> value, grpc_op *out, |
| shared_ptr<Resources> resources) = 0; |
| v8::Handle<v8::Value> GetOpType() const; |
| |
| protected: |
| virtual std::string GetTypeString() const = 0; |
| }; |
| |
| typedef std::vector<unique_ptr<Op>> OpVec; |
| struct tag { |
| tag(NanCallback *callback, OpVec *ops, |
| shared_ptr<Resources> resources); |
| ~tag(); |
| NanCallback *callback; |
| OpVec *ops; |
| shared_ptr<Resources> resources; |
| }; |
| |
| v8::Handle<v8::Value> GetTagNodeValue(void *tag); |
| |
| NanCallback *GetTagCallback(void *tag); |
| |
| void DestroyTag(void *tag); |
| |
| /* Wrapper class for grpc_call structs. */ |
| class Call : public ::node::ObjectWrap { |
| public: |
| static void Init(v8::Handle<v8::Object> exports); |
| static bool HasInstance(v8::Handle<v8::Value> val); |
| /* Wrap a grpc_call struct in a javascript object */ |
| static v8::Handle<v8::Value> WrapStruct(grpc_call *call); |
| |
| private: |
| explicit Call(grpc_call *call); |
| ~Call(); |
| |
| // Prevent copying |
| Call(const Call &); |
| Call &operator=(const Call &); |
| |
| static NAN_METHOD(New); |
| static NAN_METHOD(StartBatch); |
| static NAN_METHOD(Cancel); |
| static NAN_METHOD(CancelWithStatus); |
| static NAN_METHOD(GetPeer); |
| static NanCallback *constructor; |
| // Used for typechecking instances of this javascript class |
| static v8::Persistent<v8::FunctionTemplate> fun_tpl; |
| |
| grpc_call *wrapped_call; |
| }; |
| |
| } // namespace node |
| } // namespace grpc |
| |
| #endif // NET_GRPC_NODE_CALL_H_ |