Merge branch 'master' into failhijackedsend

8 files changed, 69 insertions, 24 deletions

diff --git a/include/grpcpp/impl/codegen/call_op_set.h b/include/grpcpp/impl/codegen/call_op_set.h
index 1c0ccbab52..b52bc98b89 100644
--- a/include/grpcpp/impl/codegen/call_op_set.h
+++ b/include/grpcpp/impl/codegen/call_op_set.h
@@ -303,6 +303,18 @@ class CallOpSendMessage {
   template <class M>
   Status SendMessage(const M& message) GRPC_MUST_USE_RESULT;
 
+  /// Send \a message using \a options for the write. The \a options are cleared
+  /// after use. This form of SendMessage allows gRPC to reference \a message
+  /// beyond the lifetime of SendMessage.
+  template <class M>
+  Status SendMessagePtr(const M* message,
+                        WriteOptions options) GRPC_MUST_USE_RESULT;
+
+  /// This form of SendMessage allows gRPC to reference \a message beyond the
+  /// lifetime of SendMessage.
+  template <class M>
+  Status SendMessagePtr(const M* message) GRPC_MUST_USE_RESULT;
+
  protected:
   void AddOp(grpc_op* ops, size_t* nops) {
     if (!send_buf_.Valid() || hijacked_) return;
@@ -332,7 +344,7 @@ class CallOpSendMessage {
     if (!send_buf_.Valid()) return;
     interceptor_methods->AddInterceptionHookPoint(
         experimental::InterceptionHookPoints::PRE_SEND_MESSAGE);
-    interceptor_methods->SetSendMessage(&send_buf_, &failed_send_);
+    interceptor_methods->SetSendMessage(&send_buf_, msg_, &failed_send_);
   }
 
   void SetFinishInterceptionHookPoint(
@@ -344,7 +356,7 @@ class CallOpSendMessage {
     send_buf_.Clear();
     // The contents of the SendMessage value that was previously set
     // has had its references stolen by core's operations
-    interceptor_methods->SetSendMessage(nullptr, &failed_send_);
+    interceptor_methods->SetSendMessage(nullptr, nullptr, &failed_send_);
   }
 
   void SetHijackingState(InterceptorBatchMethodsImpl* interceptor_methods) {
@@ -352,6 +364,7 @@ class CallOpSendMessage {
   }
 
  private:
+  const void* msg_ = nullptr;  // The original non-serialized message
   bool hijacked_ = false;
   bool failed_send_ = false;
   ByteBuffer send_buf_;
@@ -379,6 +392,19 @@ Status CallOpSendMessage::SendMessage(const M& message) {
   return SendMessage(message, WriteOptions());
 }
 
+template <class M>
+Status CallOpSendMessage::SendMessagePtr(const M* message,
+                                         WriteOptions options) {
+  msg_ = message;
+  return SendMessage(*message, options);
+}
+
+template <class M>
+Status CallOpSendMessage::SendMessagePtr(const M* message) {
+  msg_ = message;
+  return SendMessage(*message, WriteOptions());
+}
+
 template <class R>
 class CallOpRecvMessage {
  public:
diff --git a/include/grpcpp/impl/codegen/client_callback.h b/include/grpcpp/impl/codegen/client_callback.h
index 66cf9b7754..c20e845810 100644
--- a/include/grpcpp/impl/codegen/client_callback.h
+++ b/include/grpcpp/impl/codegen/client_callback.h
@@ -73,7 +73,7 @@ class CallbackUnaryCallImpl {
         CallbackWithStatusTag(call.call(), on_completion, ops);
 
     // TODO(vjpai): Unify code with sync API as much as possible
-    Status s = ops->SendMessage(*request);
+    Status s = ops->SendMessagePtr(request);
     if (!s.ok()) {
       tag->force_run(s);
       return;
@@ -341,7 +341,7 @@ class ClientCallbackReaderWriterImpl
       start_corked_ = false;
     }
     // TODO(vjpai): don't assert
-    GPR_CODEGEN_ASSERT(write_ops_.SendMessage(*msg).ok());
+    GPR_CODEGEN_ASSERT(write_ops_.SendMessagePtr(msg).ok());
 
     if (options.is_last_message()) {
       options.set_buffer_hint();
@@ -524,7 +524,7 @@ class ClientCallbackReaderImpl
       : context_(context), call_(call), reactor_(reactor) {
     this->BindReactor(reactor);
     // TODO(vjpai): don't assert
-    GPR_CODEGEN_ASSERT(start_ops_.SendMessage(*request).ok());
+    GPR_CODEGEN_ASSERT(start_ops_.SendMessagePtr(request).ok());
     start_ops_.ClientSendClose();
   }
 
@@ -650,7 +650,7 @@ class ClientCallbackWriterImpl
       start_corked_ = false;
     }
     // TODO(vjpai): don't assert
-    GPR_CODEGEN_ASSERT(write_ops_.SendMessage(*msg).ok());
+    GPR_CODEGEN_ASSERT(write_ops_.SendMessagePtr(msg).ok());
 
     if (options.is_last_message()) {
       options.set_buffer_hint();
diff --git a/include/grpcpp/impl/codegen/client_unary_call.h b/include/grpcpp/impl/codegen/client_unary_call.h
index 5151839412..b9f8e1663f 100644
--- a/include/grpcpp/impl/codegen/client_unary_call.h
+++ b/include/grpcpp/impl/codegen/client_unary_call.h
@@ -57,7 +57,7 @@ class BlockingUnaryCallImpl {
               CallOpRecvInitialMetadata, CallOpRecvMessage<OutputMessage>,
               CallOpClientSendClose, CallOpClientRecvStatus>
         ops;
-    status_ = ops.SendMessage(request);
+    status_ = ops.SendMessagePtr(&request);
     if (!status_.ok()) {
       return;
     }
diff --git a/include/grpcpp/impl/codegen/interceptor.h b/include/grpcpp/impl/codegen/interceptor.h
index 58b4f36d95..0ad257bcd6 100644
--- a/include/grpcpp/impl/codegen/interceptor.h
+++ b/include/grpcpp/impl/codegen/interceptor.h
@@ -110,7 +110,13 @@ class InterceptorBatchMethods {
   /// Returns a modifable ByteBuffer holding the serialized form of the message
   /// that is going to be sent. Valid for PRE_SEND_MESSAGE interceptions.
   /// A return value of nullptr indicates that this ByteBuffer is not valid.
-  virtual ByteBuffer* GetSendMessage() = 0;
+  virtual ByteBuffer* GetSerializedSendMessage() = 0;
+
+  /// Returns a non-modifiable pointer to the original non-serialized form of
+  /// the message. Valid for PRE_SEND_MESSAGE interceptions. A return value of
+  /// nullptr indicates that this field is not valid. Also note that this is
+  /// only supported for sync and callback APIs at the present moment.
+  virtual const void* GetSendMessage() = 0;
 
   /// Checks whether the SEND MESSAGE op succeeded. Valid for POST_SEND_MESSAGE
   /// interceptions.
diff --git a/include/grpcpp/impl/codegen/interceptor_common.h b/include/grpcpp/impl/codegen/interceptor_common.h
index b01706af8d..734860615f 100644
--- a/include/grpcpp/impl/codegen/interceptor_common.h
+++ b/include/grpcpp/impl/codegen/interceptor_common.h
@@ -79,7 +79,9 @@ class InterceptorBatchMethodsImpl
     hooks_[static_cast<size_t>(type)] = true;
   }
 
-  ByteBuffer* GetSendMessage() override { return send_message_; }
+  ByteBuffer* GetSerializedSendMessage() override { return send_message_; }
+
+  const void* GetSendMessage() override { return orig_send_message_; }
 
   bool GetSendMessageStatus() override { return !*fail_send_message_; }
 
@@ -123,8 +125,10 @@ class InterceptorBatchMethodsImpl
     return recv_trailing_metadata_->map();
   }
 
-  void SetSendMessage(ByteBuffer* buf, bool* fail_send_message) {
+  void SetSendMessage(ByteBuffer* buf, const void* msg,
+                      bool* fail_send_message) {
     send_message_ = buf;
+    orig_send_message_ = msg;
     fail_send_message_ = fail_send_message;
   }
 
@@ -346,6 +350,7 @@ class InterceptorBatchMethodsImpl
 
   ByteBuffer* send_message_ = nullptr;
   bool* fail_send_message_ = nullptr;
+  const void* orig_send_message_ = nullptr;
 
   std::multimap<grpc::string, grpc::string>* send_initial_metadata_;
 
@@ -391,7 +396,7 @@ class CancelInterceptorBatchMethods
                        "Cancel notification");
   }
 
-  ByteBuffer* GetSendMessage() override {
+  ByteBuffer* GetSerializedSendMessage() override {
     GPR_CODEGEN_ASSERT(false &&
                        "It is illegal to call GetSendMessage on a method which "
                        "has a Cancel notification");
@@ -406,6 +411,14 @@ class CancelInterceptorBatchMethods
     return false;
   }
 
+  const void* GetSendMessage() override {
+    GPR_CODEGEN_ASSERT(
+        false &&
+        "It is illegal to call GetOriginalSendMessage on a method which "
+        "has a Cancel notification");
+    return nullptr;
+  }
+
   std::multimap<grpc::string, grpc::string>* GetSendInitialMetadata() override {
     GPR_CODEGEN_ASSERT(false &&
                        "It is illegal to call GetSendInitialMetadata on a "
diff --git a/include/grpcpp/impl/codegen/method_handler_impl.h b/include/grpcpp/impl/codegen/method_handler_impl.h
index dd53f975f6..094286294c 100644
--- a/include/grpcpp/impl/codegen/method_handler_impl.h
+++ b/include/grpcpp/impl/codegen/method_handler_impl.h
@@ -79,7 +79,7 @@ class RpcMethodHandler : public MethodHandler {
       ops.set_compression_level(param.server_context->compression_level());
     }
     if (status.ok()) {
-      status = ops.SendMessage(rsp);
+      status = ops.SendMessagePtr(&rsp);
     }
     ops.ServerSendStatus(&param.server_context->trailing_metadata_, status);
     param.call->PerformOps(&ops);
@@ -139,7 +139,7 @@ class ClientStreamingHandler : public MethodHandler {
       }
     }
     if (status.ok()) {
-      status = ops.SendMessage(rsp);
+      status = ops.SendMessagePtr(&rsp);
     }
     ops.ServerSendStatus(&param.server_context->trailing_metadata_, status);
     param.call->PerformOps(&ops);
diff --git a/include/grpcpp/impl/codegen/server_callback.h b/include/grpcpp/impl/codegen/server_callback.h
index 1854f6ef2f..a0e59215dd 100644
--- a/include/grpcpp/impl/codegen/server_callback.h
+++ b/include/grpcpp/impl/codegen/server_callback.h
@@ -320,7 +320,7 @@ class CallbackUnaryHandler : public MethodHandler {
       // The response is dropped if the status is not OK.
       if (s.ok()) {
         finish_ops_.ServerSendStatus(&ctx_->trailing_metadata_,
-                                     finish_ops_.SendMessage(resp_));
+                                     finish_ops_.SendMessagePtr(&resp_));
       } else {
         finish_ops_.ServerSendStatus(&ctx_->trailing_metadata_, s);
       }
@@ -449,7 +449,7 @@ class CallbackClientStreamingHandler : public MethodHandler {
       // The response is dropped if the status is not OK.
       if (s.ok()) {
         finish_ops_.ServerSendStatus(&ctx_->trailing_metadata_,
-                                     finish_ops_.SendMessage(resp_));
+                                     finish_ops_.SendMessagePtr(&resp_));
       } else {
         finish_ops_.ServerSendStatus(&ctx_->trailing_metadata_, s);
       }
@@ -642,7 +642,7 @@ class CallbackServerStreamingHandler : public MethodHandler {
         ctx_->sent_initial_metadata_ = true;
       }
       // TODO(vjpai): don't assert
-      GPR_CODEGEN_ASSERT(write_ops_.SendMessage(*resp, options).ok());
+      GPR_CODEGEN_ASSERT(write_ops_.SendMessagePtr(resp, options).ok());
       call_.PerformOps(&write_ops_);
     }
 
@@ -652,7 +652,7 @@ class CallbackServerStreamingHandler : public MethodHandler {
       // Don't send any message if the status is bad
       if (s.ok()) {
         // TODO(vjpai): don't assert
-        GPR_CODEGEN_ASSERT(finish_ops_.SendMessage(*resp, options).ok());
+        GPR_CODEGEN_ASSERT(finish_ops_.SendMessagePtr(resp, options).ok());
       }
       Finish(std::move(s));
     }
@@ -804,7 +804,7 @@ class CallbackBidiHandler : public MethodHandler {
         ctx_->sent_initial_metadata_ = true;
       }
       // TODO(vjpai): don't assert
-      GPR_CODEGEN_ASSERT(write_ops_.SendMessage(*resp, options).ok());
+      GPR_CODEGEN_ASSERT(write_ops_.SendMessagePtr(resp, options).ok());
       call_.PerformOps(&write_ops_);
     }
 
@@ -813,7 +813,7 @@ class CallbackBidiHandler : public MethodHandler {
       // Don't send any message if the status is bad
       if (s.ok()) {
         // TODO(vjpai): don't assert
-        GPR_CODEGEN_ASSERT(finish_ops_.SendMessage(*resp, options).ok());
+        GPR_CODEGEN_ASSERT(finish_ops_.SendMessagePtr(resp, options).ok());
       }
       Finish(std::move(s));
     }
diff --git a/include/grpcpp/impl/codegen/sync_stream.h b/include/grpcpp/impl/codegen/sync_stream.h
index 6981076f04..d9edad4215 100644
--- a/include/grpcpp/impl/codegen/sync_stream.h
+++ b/include/grpcpp/impl/codegen/sync_stream.h
@@ -253,7 +253,7 @@ class ClientReader final : public ClientReaderInterface<R> {
     ops.SendInitialMetadata(&context->send_initial_metadata_,
                             context->initial_metadata_flags());
     // TODO(ctiller): don't assert
-    GPR_CODEGEN_ASSERT(ops.SendMessage(request).ok());
+    GPR_CODEGEN_ASSERT(ops.SendMessagePtr(&request).ok());
     ops.ClientSendClose();
     call_.PerformOps(&ops);
     cq_.Pluck(&ops);
@@ -331,7 +331,7 @@ class ClientWriter : public ClientWriterInterface<W> {
                               context_->initial_metadata_flags());
       context_->set_initial_metadata_corked(false);
     }
-    if (!ops.SendMessage(msg, options).ok()) {
+    if (!ops.SendMessagePtr(&msg, options).ok()) {
       return false;
     }
 
@@ -502,7 +502,7 @@ class ClientReaderWriter final : public ClientReaderWriterInterface<W, R> {
                               context_->initial_metadata_flags());
       context_->set_initial_metadata_corked(false);
     }
-    if (!ops.SendMessage(msg, options).ok()) {
+    if (!ops.SendMessagePtr(&msg, options).ok()) {
       return false;
     }
 
@@ -656,7 +656,7 @@ class ServerWriter final : public ServerWriterInterface<W> {
       options.set_buffer_hint();
     }
 
-    if (!ctx_->pending_ops_.SendMessage(msg, options).ok()) {
+    if (!ctx_->pending_ops_.SendMessagePtr(&msg, options).ok()) {
       return false;
     }
     if (!ctx_->sent_initial_metadata_) {
@@ -734,7 +734,7 @@ class ServerReaderWriterBody final {
     if (options.is_last_message()) {
       options.set_buffer_hint();
     }
-    if (!ctx_->pending_ops_.SendMessage(msg, options).ok()) {
+    if (!ctx_->pending_ops_.SendMessagePtr(&msg, options).ok()) {
       return false;
     }
     if (!ctx_->sent_initial_metadata_) {