Built motion from commit 6a09e18b.|2.6.11

[motion2.git] / legacy-libs / grpc / ext / call.h

diff --git a/legacy-libs/grpc/ext/call.h b/legacy-libs/grpc/ext/call.h
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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);
+
+  grpc_call *GetWrappedCall();
+
+  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;
+  Nan::AsyncResource *async_resource;
+  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_