Line data    Source code

       1             : /*
       2             :  *
       3             :  * Copyright 2015, Google Inc.
       4             :  * All rights reserved.
       5             :  *
       6             :  * Redistribution and use in source and binary forms, with or without
       7             :  * modification, are permitted provided that the following conditions are
       8             :  * met:
       9             :  *
      10             :  *     * Redistributions of source code must retain the above copyright
      11             :  * notice, this list of conditions and the following disclaimer.
      12             :  *     * Redistributions in binary form must reproduce the above
      13             :  * copyright notice, this list of conditions and the following disclaimer
      14             :  * in the documentation and/or other materials provided with the
      15             :  * distribution.
      16             :  *     * Neither the name of Google Inc. nor the names of its
      17             :  * contributors may be used to endorse or promote products derived from
      18             :  * this software without specific prior written permission.
      19             :  *
      20             :  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
      21             :  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
      22             :  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
      23             :  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
      24             :  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
      25             :  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
      26             :  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
      27             :  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
      28             :  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
      29             :  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
      30             :  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
      31             :  *
      32             :  */
      33             : 
      34             : #ifndef NET_GRPC_NODE_CALL_H_
      35             : #define NET_GRPC_NODE_CALL_H_
      36             : 
      37             : #include <memory>
      38             : #include <vector>
      39             : 
      40             : #include <node.h>
      41             : #include <nan.h>
      42             : #include "grpc/grpc.h"
      43             : #include "grpc/support/log.h"
      44             : 
      45             : #include "channel.h"
      46             : 
      47             : 
      48             : namespace grpc {
      49             : namespace node {
      50             : 
      51             : using std::unique_ptr;
      52             : using std::shared_ptr;
      53             : 
      54             : typedef Nan::Persistent<v8::Value, Nan::CopyablePersistentTraits<v8::Value>> PersistentValue;
      55             : 
      56             : v8::Local<v8::Value> nanErrorWithCode(const char *msg, grpc_call_error code);
      57             : 
      58             : v8::Local<v8::Value> ParseMetadata(const grpc_metadata_array *metadata_array);
      59             : 
      60        2019 : struct Resources {
      61             :   std::vector<unique_ptr<Nan::Utf8String> > strings;
      62             :   std::vector<unique_ptr<PersistentValue> > handles;
      63             : };
      64             : 
      65             : bool CreateMetadataArray(v8::Local<v8::Object> metadata,
      66             :                          grpc_metadata_array *array,
      67             :                          shared_ptr<Resources> resources);
      68             : 
      69        1166 : class Op {
      70             :  public:
      71             :   virtual v8::Local<v8::Value> GetNodeValue() const = 0;
      72             :   virtual bool ParseOp(v8::Local<v8::Value> value, grpc_op *out,
      73             :                        shared_ptr<Resources> resources) = 0;
      74             :   virtual ~Op();
      75             :   v8::Local<v8::Value> GetOpType() const;
      76             : 
      77             :  protected:
      78             :   virtual std::string GetTypeString() const = 0;
      79             : };
      80             : 
      81             : typedef std::vector<unique_ptr<Op>> OpVec;
      82             : struct tag {
      83             :   tag(Nan::Callback *callback, OpVec *ops,
      84             :       shared_ptr<Resources> resources);
      85             :   ~tag();
      86             :   Nan::Callback *callback;
      87             :   OpVec *ops;
      88             :   shared_ptr<Resources> resources;
      89             : };
      90             : 
      91             : v8::Local<v8::Value> GetTagNodeValue(void *tag);
      92             : 
      93             : Nan::Callback *GetTagCallback(void *tag);
      94             : 
      95             : void DestroyTag(void *tag);
      96             : 
      97             : /* Wrapper class for grpc_call structs. */
      98             : class Call : public Nan::ObjectWrap {
      99             :  public:
     100             :   static void Init(v8::Local<v8::Object> exports);
     101             :   static bool HasInstance(v8::Local<v8::Value> val);
     102             :   /* Wrap a grpc_call struct in a javascript object */
     103             :   static v8::Local<v8::Value> WrapStruct(grpc_call *call);
     104             : 
     105             :  private:
     106             :   explicit Call(grpc_call *call);
     107             :   ~Call();
     108             : 
     109             :   // Prevent copying
     110             :   Call(const Call &);
     111             :   Call &operator=(const Call &);
     112             : 
     113             :   static NAN_METHOD(New);
     114             :   static NAN_METHOD(StartBatch);
     115             :   static NAN_METHOD(Cancel);
     116             :   static NAN_METHOD(CancelWithStatus);
     117             :   static NAN_METHOD(GetPeer);
     118             :   static NAN_METHOD(SetCredentials);
     119             :   static Nan::Callback *constructor;
     120             :   // Used for typechecking instances of this javascript class
     121             :   static Nan::Persistent<v8::FunctionTemplate> fun_tpl;
     122             : 
     123             :   grpc_call *wrapped_call;
     124             : };
     125             : 
     126             : }  // namespace node
     127             : }  // namespace grpc
     128             : 
     129             : #endif  // NET_GRPC_NODE_CALL_H_