| /* |
| * |
| * 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 GRPCXX_IMPL_CODEGEN_CALL_H |
| #define GRPCXX_IMPL_CODEGEN_CALL_H |
| |
| #include <assert.h> |
| #include <cstring> |
| #include <functional> |
| #include <map> |
| #include <memory> |
| |
| #include <grpc++/impl/codegen/byte_buffer.h> |
| #include <grpc++/impl/codegen/call_hook.h> |
| #include <grpc++/impl/codegen/client_context.h> |
| #include <grpc++/impl/codegen/completion_queue_tag.h> |
| #include <grpc++/impl/codegen/config.h> |
| #include <grpc++/impl/codegen/core_codegen_interface.h> |
| #include <grpc++/impl/codegen/serialization_traits.h> |
| #include <grpc++/impl/codegen/slice.h> |
| #include <grpc++/impl/codegen/status.h> |
| #include <grpc++/impl/codegen/string_ref.h> |
| |
| #include <grpc/impl/codegen/atm.h> |
| #include <grpc/impl/codegen/compression_types.h> |
| #include <grpc/impl/codegen/grpc_types.h> |
| |
| namespace grpc { |
| |
| class ByteBuffer; |
| class Call; |
| class CallHook; |
| class CompletionQueue; |
| extern CoreCodegenInterface* g_core_codegen_interface; |
| |
| const char kBinaryErrorDetailsKey[] = "grpc-status-details-bin"; |
| |
| // TODO(yangg) if the map is changed before we send, the pointers will be a |
| // mess. Make sure it does not happen. |
| inline grpc_metadata* FillMetadataArray( |
| const std::multimap<grpc::string, grpc::string>& metadata, |
| size_t* metadata_count, const grpc::string& optional_error_details) { |
| *metadata_count = metadata.size() + (optional_error_details.empty() ? 0 : 1); |
| if (*metadata_count == 0) { |
| return nullptr; |
| } |
| grpc_metadata* metadata_array = |
| (grpc_metadata*)(g_core_codegen_interface->gpr_malloc( |
| (*metadata_count) * sizeof(grpc_metadata))); |
| size_t i = 0; |
| for (auto iter = metadata.cbegin(); iter != metadata.cend(); ++iter, ++i) { |
| metadata_array[i].key = SliceReferencingString(iter->first); |
| metadata_array[i].value = SliceReferencingString(iter->second); |
| } |
| if (!optional_error_details.empty()) { |
| metadata_array[i].key = |
| g_core_codegen_interface->grpc_slice_from_static_buffer( |
| kBinaryErrorDetailsKey, sizeof(kBinaryErrorDetailsKey) - 1); |
| metadata_array[i].value = SliceReferencingString(optional_error_details); |
| } |
| return metadata_array; |
| } |
| |
| /// Per-message write options. |
| class WriteOptions { |
| public: |
| WriteOptions() : flags_(0), last_message_(false) {} |
| WriteOptions(const WriteOptions& other) |
| : flags_(other.flags_), last_message_(other.last_message_) {} |
| |
| /// Clear all flags. |
| inline void Clear() { flags_ = 0; } |
| |
| /// Returns raw flags bitset. |
| inline uint32_t flags() const { return flags_; } |
| |
| /// Sets flag for the disabling of compression for the next message write. |
| /// |
| /// \sa GRPC_WRITE_NO_COMPRESS |
| inline WriteOptions& set_no_compression() { |
| SetBit(GRPC_WRITE_NO_COMPRESS); |
| return *this; |
| } |
| |
| /// Clears flag for the disabling of compression for the next message write. |
| /// |
| /// \sa GRPC_WRITE_NO_COMPRESS |
| inline WriteOptions& clear_no_compression() { |
| ClearBit(GRPC_WRITE_NO_COMPRESS); |
| return *this; |
| } |
| |
| /// Get value for the flag indicating whether compression for the next |
| /// message write is forcefully disabled. |
| /// |
| /// \sa GRPC_WRITE_NO_COMPRESS |
| inline bool get_no_compression() const { |
| return GetBit(GRPC_WRITE_NO_COMPRESS); |
| } |
| |
| /// Sets flag indicating that the write may be buffered and need not go out on |
| /// the wire immediately. |
| /// |
| /// \sa GRPC_WRITE_BUFFER_HINT |
| inline WriteOptions& set_buffer_hint() { |
| SetBit(GRPC_WRITE_BUFFER_HINT); |
| return *this; |
| } |
| |
| /// Clears flag indicating that the write may be buffered and need not go out |
| /// on the wire immediately. |
| /// |
| /// \sa GRPC_WRITE_BUFFER_HINT |
| inline WriteOptions& clear_buffer_hint() { |
| ClearBit(GRPC_WRITE_BUFFER_HINT); |
| return *this; |
| } |
| |
| /// Get value for the flag indicating that the write may be buffered and need |
| /// not go out on the wire immediately. |
| /// |
| /// \sa GRPC_WRITE_BUFFER_HINT |
| inline bool get_buffer_hint() const { return GetBit(GRPC_WRITE_BUFFER_HINT); } |
| |
| /// corked bit: aliases set_buffer_hint currently, with the intent that |
| /// set_buffer_hint will be removed in the future |
| inline WriteOptions& set_corked() { |
| SetBit(GRPC_WRITE_BUFFER_HINT); |
| return *this; |
| } |
| |
| inline WriteOptions& clear_corked() { |
| ClearBit(GRPC_WRITE_BUFFER_HINT); |
| return *this; |
| } |
| |
| inline bool is_corked() const { return GetBit(GRPC_WRITE_BUFFER_HINT); } |
| |
| /// last-message bit: indicates this is the last message in a stream |
| /// client-side: makes Write the equivalent of performing Write, WritesDone |
| /// in a single step |
| /// server-side: hold the Write until the service handler returns (sync api) |
| /// or until Finish is called (async api) |
| inline WriteOptions& set_last_message() { |
| last_message_ = true; |
| return *this; |
| } |
| |
| /// Clears flag indicating that this is the last message in a stream, |
| /// disabling coalescing. |
| inline WriteOptions& clear_last_messsage() { |
| last_message_ = false; |
| return *this; |
| } |
| |
| /// Guarantee that all bytes have been written to the wire before completing |
| /// this write (usually writes are completed when they pass flow control) |
| inline WriteOptions& set_write_through() { |
| SetBit(GRPC_WRITE_THROUGH); |
| return *this; |
| } |
| |
| inline bool is_write_through() const { return GetBit(GRPC_WRITE_THROUGH); } |
| |
| /// Get value for the flag indicating that this is the last message, and |
| /// should be coalesced with trailing metadata. |
| /// |
| /// \sa GRPC_WRITE_LAST_MESSAGE |
| bool is_last_message() const { return last_message_; } |
| |
| WriteOptions& operator=(const WriteOptions& rhs) { |
| flags_ = rhs.flags_; |
| return *this; |
| } |
| |
| private: |
| void SetBit(const uint32_t mask) { flags_ |= mask; } |
| |
| void ClearBit(const uint32_t mask) { flags_ &= ~mask; } |
| |
| bool GetBit(const uint32_t mask) const { return (flags_ & mask) != 0; } |
| |
| uint32_t flags_; |
| bool last_message_; |
| }; |
| |
| /// Default argument for CallOpSet. I is unused by the class, but can be |
| /// used for generating multiple names for the same thing. |
| template <int I> |
| class CallNoOp { |
| protected: |
| void AddOp(grpc_op* ops, size_t* nops) {} |
| void FinishOp(bool* status) {} |
| }; |
| |
| class CallOpSendInitialMetadata { |
| public: |
| CallOpSendInitialMetadata() : send_(false) { |
| maybe_compression_level_.is_set = false; |
| maybe_stream_compression_level_.is_set = false; |
| } |
| |
| void SendInitialMetadata( |
| const std::multimap<grpc::string, grpc::string>& metadata, |
| uint32_t flags) { |
| maybe_compression_level_.is_set = false; |
| maybe_stream_compression_level_.is_set = false; |
| send_ = true; |
| flags_ = flags; |
| initial_metadata_ = |
| FillMetadataArray(metadata, &initial_metadata_count_, ""); |
| } |
| |
| void set_compression_level(grpc_compression_level level) { |
| maybe_compression_level_.is_set = true; |
| maybe_compression_level_.level = level; |
| } |
| |
| void set_stream_compression_level(grpc_stream_compression_level level) { |
| maybe_stream_compression_level_.is_set = true; |
| maybe_stream_compression_level_.level = level; |
| } |
| |
| protected: |
| void AddOp(grpc_op* ops, size_t* nops) { |
| if (!send_) return; |
| grpc_op* op = &ops[(*nops)++]; |
| op->op = GRPC_OP_SEND_INITIAL_METADATA; |
| op->flags = flags_; |
| op->reserved = NULL; |
| op->data.send_initial_metadata.count = initial_metadata_count_; |
| op->data.send_initial_metadata.metadata = initial_metadata_; |
| op->data.send_initial_metadata.maybe_compression_level.is_set = |
| maybe_compression_level_.is_set; |
| if (maybe_compression_level_.is_set) { |
| op->data.send_initial_metadata.maybe_compression_level.level = |
| maybe_compression_level_.level; |
| } |
| op->data.send_initial_metadata.maybe_stream_compression_level.is_set = |
| maybe_stream_compression_level_.is_set; |
| if (maybe_stream_compression_level_.is_set) { |
| op->data.send_initial_metadata.maybe_stream_compression_level.level = |
| maybe_stream_compression_level_.level; |
| } |
| } |
| void FinishOp(bool* status) { |
| if (!send_) return; |
| g_core_codegen_interface->gpr_free(initial_metadata_); |
| send_ = false; |
| } |
| |
| bool send_; |
| uint32_t flags_; |
| size_t initial_metadata_count_; |
| grpc_metadata* initial_metadata_; |
| struct { |
| bool is_set; |
| grpc_compression_level level; |
| } maybe_compression_level_; |
| struct { |
| bool is_set; |
| grpc_stream_compression_level level; |
| } maybe_stream_compression_level_; |
| }; |
| |
| class CallOpSendMessage { |
| public: |
| CallOpSendMessage() : send_buf_() {} |
| |
| /// Send \a message using \a options for the write. The \a options are cleared |
| /// after use. |
| template <class M> |
| Status SendMessage(const M& message, |
| WriteOptions options) GRPC_MUST_USE_RESULT; |
| |
| template <class M> |
| Status SendMessage(const M& message) GRPC_MUST_USE_RESULT; |
| |
| protected: |
| void AddOp(grpc_op* ops, size_t* nops) { |
| if (!send_buf_.Valid()) return; |
| grpc_op* op = &ops[(*nops)++]; |
| op->op = GRPC_OP_SEND_MESSAGE; |
| op->flags = write_options_.flags(); |
| op->reserved = NULL; |
| op->data.send_message.send_message = send_buf_.c_buffer(); |
| // Flags are per-message: clear them after use. |
| write_options_.Clear(); |
| } |
| void FinishOp(bool* status) { send_buf_.Clear(); } |
| |
| private: |
| ByteBuffer send_buf_; |
| WriteOptions write_options_; |
| }; |
| |
| namespace internal { |
| template <class T> |
| T Example(); |
| } // namespace internal |
| |
| template <class M> |
| Status CallOpSendMessage::SendMessage(const M& message, WriteOptions options) { |
| write_options_ = options; |
| bool own_buf; |
| Status result = SerializationTraits<M>::Serialize( |
| message, send_buf_.bbuf_ptr(), &own_buf); |
| if (!own_buf) { |
| send_buf_.Duplicate(); |
| } |
| return result; |
| } |
| |
| template <class M> |
| Status CallOpSendMessage::SendMessage(const M& message) { |
| return SendMessage(message, WriteOptions()); |
| } |
| |
| template <class R> |
| class CallOpRecvMessage { |
| public: |
| CallOpRecvMessage() |
| : got_message(false), |
| message_(nullptr), |
| allow_not_getting_message_(false) {} |
| |
| void RecvMessage(R* message) { message_ = message; } |
| |
| // Do not change status if no message is received. |
| void AllowNoMessage() { allow_not_getting_message_ = true; } |
| |
| bool got_message; |
| |
| protected: |
| void AddOp(grpc_op* ops, size_t* nops) { |
| if (message_ == nullptr) return; |
| grpc_op* op = &ops[(*nops)++]; |
| op->op = GRPC_OP_RECV_MESSAGE; |
| op->flags = 0; |
| op->reserved = NULL; |
| op->data.recv_message.recv_message = recv_buf_.c_buffer_ptr(); |
| } |
| |
| void FinishOp(bool* status) { |
| if (message_ == nullptr) return; |
| if (recv_buf_.Valid()) { |
| if (*status) { |
| got_message = *status = |
| SerializationTraits<R>::Deserialize(recv_buf_.bbuf_ptr(), message_) |
| .ok(); |
| recv_buf_.Release(); |
| } else { |
| got_message = false; |
| recv_buf_.Clear(); |
| } |
| } else { |
| got_message = false; |
| if (!allow_not_getting_message_) { |
| *status = false; |
| } |
| } |
| message_ = nullptr; |
| } |
| |
| private: |
| R* message_; |
| ByteBuffer recv_buf_; |
| bool allow_not_getting_message_; |
| }; |
| |
| namespace CallOpGenericRecvMessageHelper { |
| class DeserializeFunc { |
| public: |
| virtual Status Deserialize(ByteBuffer* buf) = 0; |
| virtual ~DeserializeFunc() {} |
| }; |
| |
| template <class R> |
| class DeserializeFuncType final : public DeserializeFunc { |
| public: |
| DeserializeFuncType(R* message) : message_(message) {} |
| Status Deserialize(ByteBuffer* buf) override { |
| return SerializationTraits<R>::Deserialize(buf->bbuf_ptr(), message_); |
| } |
| |
| ~DeserializeFuncType() override {} |
| |
| private: |
| R* message_; // Not a managed pointer because management is external to this |
| }; |
| } // namespace CallOpGenericRecvMessageHelper |
| |
| class CallOpGenericRecvMessage { |
| public: |
| CallOpGenericRecvMessage() |
| : got_message(false), allow_not_getting_message_(false) {} |
| |
| template <class R> |
| void RecvMessage(R* message) { |
| // Use an explicit base class pointer to avoid resolution error in the |
| // following unique_ptr::reset for some old implementations. |
| CallOpGenericRecvMessageHelper::DeserializeFunc* func = |
| new CallOpGenericRecvMessageHelper::DeserializeFuncType<R>(message); |
| deserialize_.reset(func); |
| } |
| |
| // Do not change status if no message is received. |
| void AllowNoMessage() { allow_not_getting_message_ = true; } |
| |
| bool got_message; |
| |
| protected: |
| void AddOp(grpc_op* ops, size_t* nops) { |
| if (!deserialize_) return; |
| grpc_op* op = &ops[(*nops)++]; |
| op->op = GRPC_OP_RECV_MESSAGE; |
| op->flags = 0; |
| op->reserved = NULL; |
| op->data.recv_message.recv_message = recv_buf_.c_buffer_ptr(); |
| } |
| |
| void FinishOp(bool* status) { |
| if (!deserialize_) return; |
| if (recv_buf_.Valid()) { |
| if (*status) { |
| got_message = true; |
| *status = deserialize_->Deserialize(&recv_buf_).ok(); |
| recv_buf_.Release(); |
| } else { |
| got_message = false; |
| recv_buf_.Clear(); |
| } |
| } else { |
| got_message = false; |
| if (!allow_not_getting_message_) { |
| *status = false; |
| } |
| } |
| deserialize_.reset(); |
| } |
| |
| private: |
| std::unique_ptr<CallOpGenericRecvMessageHelper::DeserializeFunc> deserialize_; |
| ByteBuffer recv_buf_; |
| bool allow_not_getting_message_; |
| }; |
| |
| class CallOpClientSendClose { |
| public: |
| CallOpClientSendClose() : send_(false) {} |
| |
| void ClientSendClose() { send_ = true; } |
| |
| protected: |
| void AddOp(grpc_op* ops, size_t* nops) { |
| if (!send_) return; |
| grpc_op* op = &ops[(*nops)++]; |
| op->op = GRPC_OP_SEND_CLOSE_FROM_CLIENT; |
| op->flags = 0; |
| op->reserved = NULL; |
| } |
| void FinishOp(bool* status) { send_ = false; } |
| |
| private: |
| bool send_; |
| }; |
| |
| class CallOpServerSendStatus { |
| public: |
| CallOpServerSendStatus() : send_status_available_(false) {} |
| |
| void ServerSendStatus( |
| const std::multimap<grpc::string, grpc::string>& trailing_metadata, |
| const Status& status) { |
| send_error_details_ = status.error_details(); |
| trailing_metadata_ = FillMetadataArray( |
| trailing_metadata, &trailing_metadata_count_, send_error_details_); |
| send_status_available_ = true; |
| send_status_code_ = static_cast<grpc_status_code>(status.error_code()); |
| send_error_message_ = status.error_message(); |
| } |
| |
| protected: |
| void AddOp(grpc_op* ops, size_t* nops) { |
| if (!send_status_available_) return; |
| grpc_op* op = &ops[(*nops)++]; |
| op->op = GRPC_OP_SEND_STATUS_FROM_SERVER; |
| op->data.send_status_from_server.trailing_metadata_count = |
| trailing_metadata_count_; |
| op->data.send_status_from_server.trailing_metadata = trailing_metadata_; |
| op->data.send_status_from_server.status = send_status_code_; |
| error_message_slice_ = SliceReferencingString(send_error_message_); |
| op->data.send_status_from_server.status_details = |
| send_error_message_.empty() ? nullptr : &error_message_slice_; |
| op->flags = 0; |
| op->reserved = NULL; |
| } |
| |
| void FinishOp(bool* status) { |
| if (!send_status_available_) return; |
| g_core_codegen_interface->gpr_free(trailing_metadata_); |
| send_status_available_ = false; |
| } |
| |
| private: |
| bool send_status_available_; |
| grpc_status_code send_status_code_; |
| grpc::string send_error_details_; |
| grpc::string send_error_message_; |
| size_t trailing_metadata_count_; |
| grpc_metadata* trailing_metadata_; |
| grpc_slice error_message_slice_; |
| }; |
| |
| class CallOpRecvInitialMetadata { |
| public: |
| CallOpRecvInitialMetadata() : metadata_map_(nullptr) {} |
| |
| void RecvInitialMetadata(ClientContext* context) { |
| context->initial_metadata_received_ = true; |
| metadata_map_ = &context->recv_initial_metadata_; |
| } |
| |
| protected: |
| void AddOp(grpc_op* ops, size_t* nops) { |
| if (metadata_map_ == nullptr) return; |
| grpc_op* op = &ops[(*nops)++]; |
| op->op = GRPC_OP_RECV_INITIAL_METADATA; |
| op->data.recv_initial_metadata.recv_initial_metadata = metadata_map_->arr(); |
| op->flags = 0; |
| op->reserved = NULL; |
| } |
| |
| void FinishOp(bool* status) { |
| if (metadata_map_ == nullptr) return; |
| metadata_map_->FillMap(); |
| metadata_map_ = nullptr; |
| } |
| |
| private: |
| MetadataMap* metadata_map_; |
| }; |
| |
| class CallOpClientRecvStatus { |
| public: |
| CallOpClientRecvStatus() : recv_status_(nullptr) {} |
| |
| void ClientRecvStatus(ClientContext* context, Status* status) { |
| metadata_map_ = &context->trailing_metadata_; |
| recv_status_ = status; |
| error_message_ = g_core_codegen_interface->grpc_empty_slice(); |
| } |
| |
| protected: |
| void AddOp(grpc_op* ops, size_t* nops) { |
| if (recv_status_ == nullptr) return; |
| grpc_op* op = &ops[(*nops)++]; |
| op->op = GRPC_OP_RECV_STATUS_ON_CLIENT; |
| op->data.recv_status_on_client.trailing_metadata = metadata_map_->arr(); |
| op->data.recv_status_on_client.status = &status_code_; |
| op->data.recv_status_on_client.status_details = &error_message_; |
| op->flags = 0; |
| op->reserved = NULL; |
| } |
| |
| void FinishOp(bool* status) { |
| if (recv_status_ == nullptr) return; |
| metadata_map_->FillMap(); |
| grpc::string binary_error_details; |
| auto iter = metadata_map_->map()->find(kBinaryErrorDetailsKey); |
| if (iter != metadata_map_->map()->end()) { |
| binary_error_details = |
| grpc::string(iter->second.begin(), iter->second.length()); |
| } |
| *recv_status_ = Status(static_cast<StatusCode>(status_code_), |
| grpc::string(GRPC_SLICE_START_PTR(error_message_), |
| GRPC_SLICE_END_PTR(error_message_)), |
| binary_error_details); |
| g_core_codegen_interface->grpc_slice_unref(error_message_); |
| recv_status_ = nullptr; |
| } |
| |
| private: |
| MetadataMap* metadata_map_; |
| Status* recv_status_; |
| grpc_status_code status_code_; |
| grpc_slice error_message_; |
| }; |
| |
| /// An abstract collection of call ops, used to generate the |
| /// grpc_call_op structure to pass down to the lower layers, |
| /// and as it is-a CompletionQueueTag, also massages the final |
| /// completion into the correct form for consumption in the C++ |
| /// API. |
| class CallOpSetInterface : public CompletionQueueTag { |
| public: |
| /// Fills in grpc_op, starting from ops[*nops] and moving |
| /// upwards. |
| virtual void FillOps(grpc_call* call, grpc_op* ops, size_t* nops) = 0; |
| }; |
| |
| /// Primary implementaiton of CallOpSetInterface. |
| /// Since we cannot use variadic templates, we declare slots up to |
| /// the maximum count of ops we'll need in a set. We leverage the |
| /// empty base class optimization to slim this class (especially |
| /// when there are many unused slots used). To avoid duplicate base classes, |
| /// the template parmeter for CallNoOp is varied by argument position. |
| template <class Op1 = CallNoOp<1>, class Op2 = CallNoOp<2>, |
| class Op3 = CallNoOp<3>, class Op4 = CallNoOp<4>, |
| class Op5 = CallNoOp<5>, class Op6 = CallNoOp<6>> |
| class CallOpSet : public CallOpSetInterface, |
| public Op1, |
| public Op2, |
| public Op3, |
| public Op4, |
| public Op5, |
| public Op6 { |
| public: |
| CallOpSet() : return_tag_(this) {} |
| void FillOps(grpc_call* call, grpc_op* ops, size_t* nops) override { |
| this->Op1::AddOp(ops, nops); |
| this->Op2::AddOp(ops, nops); |
| this->Op3::AddOp(ops, nops); |
| this->Op4::AddOp(ops, nops); |
| this->Op5::AddOp(ops, nops); |
| this->Op6::AddOp(ops, nops); |
| g_core_codegen_interface->grpc_call_ref(call); |
| call_ = call; |
| } |
| |
| bool FinalizeResult(void** tag, bool* status) override { |
| this->Op1::FinishOp(status); |
| this->Op2::FinishOp(status); |
| this->Op3::FinishOp(status); |
| this->Op4::FinishOp(status); |
| this->Op5::FinishOp(status); |
| this->Op6::FinishOp(status); |
| *tag = return_tag_; |
| |
| g_core_codegen_interface->grpc_call_unref(call_); |
| return true; |
| } |
| |
| void set_output_tag(void* return_tag) { return_tag_ = return_tag; } |
| |
| private: |
| void* return_tag_; |
| grpc_call* call_; |
| }; |
| |
| /// A CallOpSet that does not post completions to the completion queue. |
| /// |
| /// Allows hiding some completions that the C core must generate from |
| /// C++ users. |
| template <class Op1 = CallNoOp<1>, class Op2 = CallNoOp<2>, |
| class Op3 = CallNoOp<3>, class Op4 = CallNoOp<4>, |
| class Op5 = CallNoOp<5>, class Op6 = CallNoOp<6>> |
| class SneakyCallOpSet : public CallOpSet<Op1, Op2, Op3, Op4, Op5, Op6> { |
| public: |
| bool FinalizeResult(void** tag, bool* status) override { |
| typedef CallOpSet<Op1, Op2, Op3, Op4, Op5, Op6> Base; |
| return Base::FinalizeResult(tag, status) && false; |
| } |
| }; |
| |
| /// Straightforward wrapping of the C call object |
| class Call final { |
| public: |
| /** call is owned by the caller */ |
| Call(grpc_call* call, CallHook* call_hook, CompletionQueue* cq) |
| : call_hook_(call_hook), |
| cq_(cq), |
| call_(call), |
| max_receive_message_size_(-1) {} |
| |
| Call(grpc_call* call, CallHook* call_hook, CompletionQueue* cq, |
| int max_receive_message_size) |
| : call_hook_(call_hook), |
| cq_(cq), |
| call_(call), |
| max_receive_message_size_(max_receive_message_size) {} |
| |
| void PerformOps(CallOpSetInterface* ops) { |
| call_hook_->PerformOpsOnCall(ops, this); |
| } |
| |
| grpc_call* call() const { return call_; } |
| CompletionQueue* cq() const { return cq_; } |
| |
| int max_receive_message_size() const { return max_receive_message_size_; } |
| |
| private: |
| CallHook* call_hook_; |
| CompletionQueue* cq_; |
| grpc_call* call_; |
| int max_receive_message_size_; |
| }; |
| |
| } // namespace grpc |
| |
| #endif // GRPCXX_IMPL_CODEGEN_CALL_H |