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/*
*
* 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_
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