Updated client::set() function to use grpc.

Parse response for PutRequest is still stubbed.

etcd/Client.hpp

@@ -10,6 +10,12 @@
 #include "proto/rpc.grpc.pb.h"
 
 using grpc::Channel;
+using grpc::ClientAsyncResponseReader;
+using grpc::ClientContext;
+using grpc::CompletionQueue;
+using grpc::Status;
+using etcdserverpb::PutRequest;
+using etcdserverpb::PutResponse;
 using etcdserverpb::KV;
 
 namespace etcd
@@ -140,6 +146,18 @@ namespace etcd
     web::http::client::http_client client;
 
     std::unique_ptr<KV::Stub> stub_;
+    pplx::task<etcd::Response> send_put(const std::string& key, const std::string& value);
+  };
+
+  class AsyncPutResponse
+  {
+    public:
+        PutResponse reply;
+        Status status;
+        ClientContext context;
+        CompletionQueue cq_;
+        std::unique_ptr<ClientAsyncResponseReader<PutResponse>> response_reader;
+        Response ParseResponse();
   };
 }
 

src/Client.cpp

@@ -39,8 +39,7 @@ pplx::task<etcd::Response> etcd::Client::get(std::string const & key)
 
 pplx::task<etcd::Response> etcd::Client::set(std::string const & key, std::string const & value)
 {
-  web::http::uri_builder uri("/v2/keys" + key);
-  return send_put_request(uri, "value", value);
+  return send_put(key,value);
 }
 
 pplx::task<etcd::Response> etcd::Client::add(std::string const & key, std::string const & value)
@@ -134,3 +133,45 @@ pplx::task<etcd::Response> etcd::Client::watch(std::string const & key, int from
     uri.append_query("recursive=true");
   return send_get_request(uri);
 }
+
+
+etcd::Response etcd::AsyncPutResponse::ParseResponse()
+{
+  return etcd::Response();
+}
+
+
+pplx::task<etcd::Response> etcd::Client::send_put(std::string const & key, std::string const & value)
+{
+  PutRequest request;
+  request.set_key(key);
+  request.set_value(value);
+    
+  etcd::AsyncPutResponse* call= new etcd::AsyncPutResponse();  
+
+  call->response_reader = stub_->AsyncPut(&call->context,request,&call->cq_);
+
+  call->response_reader->Finish(&call->reply, &call->status, (void*)call);
+        
+
+  return pplx::task<etcd::Response>([call]()
+  {
+    void* got_tag;
+    bool ok = false;
+    etcd::Response resp;
+
+    //blocking
+    call->cq_.Next(&got_tag, &ok);
+    GPR_ASSERT(got_tag == (void*)call);
+    GPR_ASSERT(ok);
+
+    etcd::AsyncPutResponse* call = static_cast<etcd::AsyncPutResponse*>(got_tag);
+    
+    if(call->status.ok())
+    {
+      resp = call->ParseResponse();
+    }
+    delete call;
+    return resp;
+  });
+}