| /* |
| * |
| * Copyright 2015, Google Inc. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| */ |
| |
| #include <grpc/support/alloc.h> |
| #include <grpc++/impl/call.h> |
| #include <grpc++/client_context.h> |
| #include <grpc++/channel_interface.h> |
| |
| #include "src/cpp/proto/proto_utils.h" |
| |
| namespace grpc { |
| |
| CallOpBuffer::CallOpBuffer() |
| : return_tag_(this), |
| send_initial_metadata_(false), |
| initial_metadata_count_(0), |
| initial_metadata_(nullptr), |
| recv_initial_metadata_(nullptr), |
| recv_initial_metadata_arr_{0, 0, nullptr}, |
| send_message_(nullptr), |
| send_message_buf_(nullptr), |
| recv_message_(nullptr), |
| recv_message_buf_(nullptr), |
| client_send_close_(false), |
| recv_trailing_metadata_(nullptr), |
| recv_status_(nullptr), |
| recv_trailing_metadata_arr_{0, 0, nullptr}, |
| status_code_(GRPC_STATUS_OK), |
| status_details_(nullptr), |
| status_details_capacity_(0), |
| send_status_(nullptr), |
| trailing_metadata_count_(0), |
| trailing_metadata_(nullptr), |
| cancelled_buf_(0), |
| recv_closed_(nullptr) {} |
| |
| void CallOpBuffer::Reset(void* next_return_tag) { |
| return_tag_ = next_return_tag; |
| |
| send_initial_metadata_ = false; |
| initial_metadata_count_ = 0; |
| gpr_free(initial_metadata_); |
| |
| recv_initial_metadata_ = nullptr; |
| recv_initial_metadata_arr_.count = 0; |
| |
| send_message_ = nullptr; |
| if (send_message_buf_) { |
| grpc_byte_buffer_destroy(send_message_buf_); |
| send_message_buf_ = nullptr; |
| } |
| |
| recv_message_ = nullptr; |
| got_message = false; |
| if (recv_message_buf_) { |
| grpc_byte_buffer_destroy(recv_message_buf_); |
| recv_message_buf_ = nullptr; |
| } |
| |
| client_send_close_ = false; |
| |
| recv_trailing_metadata_ = nullptr; |
| recv_status_ = nullptr; |
| recv_trailing_metadata_arr_.count = 0; |
| |
| status_code_ = GRPC_STATUS_OK; |
| |
| send_status_ = nullptr; |
| trailing_metadata_count_ = 0; |
| trailing_metadata_ = nullptr; |
| |
| recv_closed_ = nullptr; |
| } |
| |
| CallOpBuffer::~CallOpBuffer() { |
| gpr_free(status_details_); |
| gpr_free(recv_initial_metadata_arr_.metadata); |
| gpr_free(recv_trailing_metadata_arr_.metadata); |
| if (recv_message_buf_) { |
| grpc_byte_buffer_destroy(recv_message_buf_); |
| } |
| if (send_message_buf_) { |
| grpc_byte_buffer_destroy(send_message_buf_); |
| } |
| } |
| |
| namespace { |
| // TODO(yangg) if the map is changed before we send, the pointers will be a |
| // mess. Make sure it does not happen. |
| grpc_metadata* FillMetadataArray( |
| std::multimap<grpc::string, grpc::string>* metadata) { |
| if (metadata->empty()) { |
| return nullptr; |
| } |
| grpc_metadata* metadata_array = |
| (grpc_metadata*)gpr_malloc(metadata->size() * sizeof(grpc_metadata)); |
| size_t i = 0; |
| for (auto iter = metadata->cbegin(); iter != metadata->cend(); ++iter, ++i) { |
| metadata_array[i].key = iter->first.c_str(); |
| metadata_array[i].value = iter->second.c_str(); |
| metadata_array[i].value_length = iter->second.size(); |
| } |
| return metadata_array; |
| } |
| |
| void FillMetadataMap(grpc_metadata_array* arr, |
| std::multimap<grpc::string, grpc::string>* metadata) { |
| for (size_t i = 0; i < arr->count; i++) { |
| // TODO(yangg) handle duplicates? |
| metadata->insert(std::pair<grpc::string, grpc::string>( |
| arr->metadata[i].key, |
| {arr->metadata[i].value, arr->metadata[i].value_length})); |
| } |
| grpc_metadata_array_destroy(arr); |
| grpc_metadata_array_init(arr); |
| } |
| } // namespace |
| |
| void CallOpBuffer::AddSendInitialMetadata( |
| std::multimap<grpc::string, grpc::string>* metadata) { |
| send_initial_metadata_ = true; |
| initial_metadata_count_ = metadata->size(); |
| initial_metadata_ = FillMetadataArray(metadata); |
| } |
| |
| void CallOpBuffer::AddRecvInitialMetadata(ClientContext* ctx) { |
| ctx->initial_metadata_received_ = true; |
| recv_initial_metadata_ = &ctx->recv_initial_metadata_; |
| } |
| |
| void CallOpBuffer::AddSendInitialMetadata(ClientContext* ctx) { |
| AddSendInitialMetadata(&ctx->send_initial_metadata_); |
| } |
| |
| void CallOpBuffer::AddSendMessage(const grpc::protobuf::Message& message) { |
| send_message_ = &message; |
| } |
| |
| void CallOpBuffer::AddRecvMessage(grpc::protobuf::Message* message) { |
| recv_message_ = message; |
| recv_message_->Clear(); |
| } |
| |
| void CallOpBuffer::AddClientSendClose() { client_send_close_ = true; } |
| |
| void CallOpBuffer::AddServerRecvClose(bool* cancelled) { |
| recv_closed_ = cancelled; |
| } |
| |
| void CallOpBuffer::AddClientRecvStatus(ClientContext* context, Status* status) { |
| recv_trailing_metadata_ = &context->trailing_metadata_; |
| recv_status_ = status; |
| } |
| |
| void CallOpBuffer::AddServerSendStatus( |
| std::multimap<grpc::string, grpc::string>* metadata, const Status& status) { |
| if (metadata != NULL) { |
| trailing_metadata_count_ = metadata->size(); |
| trailing_metadata_ = FillMetadataArray(metadata); |
| } else { |
| trailing_metadata_count_ = 0; |
| } |
| send_status_ = &status; |
| } |
| |
| void CallOpBuffer::FillOps(grpc_op* ops, size_t* nops) { |
| *nops = 0; |
| if (send_initial_metadata_) { |
| ops[*nops].op = GRPC_OP_SEND_INITIAL_METADATA; |
| ops[*nops].data.send_initial_metadata.count = initial_metadata_count_; |
| ops[*nops].data.send_initial_metadata.metadata = initial_metadata_; |
| (*nops)++; |
| } |
| if (recv_initial_metadata_) { |
| ops[*nops].op = GRPC_OP_RECV_INITIAL_METADATA; |
| ops[*nops].data.recv_initial_metadata = &recv_initial_metadata_arr_; |
| (*nops)++; |
| } |
| if (send_message_) { |
| bool success = SerializeProto(*send_message_, &send_message_buf_); |
| if (!success) { |
| abort(); |
| // TODO handle parse failure |
| } |
| ops[*nops].op = GRPC_OP_SEND_MESSAGE; |
| ops[*nops].data.send_message = send_message_buf_; |
| (*nops)++; |
| } |
| if (recv_message_) { |
| ops[*nops].op = GRPC_OP_RECV_MESSAGE; |
| ops[*nops].data.recv_message = &recv_message_buf_; |
| (*nops)++; |
| } |
| if (client_send_close_) { |
| ops[*nops].op = GRPC_OP_SEND_CLOSE_FROM_CLIENT; |
| (*nops)++; |
| } |
| if (recv_status_) { |
| ops[*nops].op = GRPC_OP_RECV_STATUS_ON_CLIENT; |
| ops[*nops].data.recv_status_on_client.trailing_metadata = |
| &recv_trailing_metadata_arr_; |
| ops[*nops].data.recv_status_on_client.status = &status_code_; |
| ops[*nops].data.recv_status_on_client.status_details = &status_details_; |
| ops[*nops].data.recv_status_on_client.status_details_capacity = |
| &status_details_capacity_; |
| (*nops)++; |
| } |
| if (send_status_) { |
| ops[*nops].op = GRPC_OP_SEND_STATUS_FROM_SERVER; |
| ops[*nops].data.send_status_from_server.trailing_metadata_count = |
| trailing_metadata_count_; |
| ops[*nops].data.send_status_from_server.trailing_metadata = |
| trailing_metadata_; |
| ops[*nops].data.send_status_from_server.status = |
| static_cast<grpc_status_code>(send_status_->code()); |
| ops[*nops].data.send_status_from_server.status_details = |
| send_status_->details().c_str(); |
| (*nops)++; |
| } |
| if (recv_closed_) { |
| ops[*nops].op = GRPC_OP_RECV_CLOSE_ON_SERVER; |
| ops[*nops].data.recv_close_on_server.cancelled = &cancelled_buf_; |
| (*nops)++; |
| } |
| } |
| |
| bool CallOpBuffer::FinalizeResult(void** tag, bool* status) { |
| // Release send buffers. |
| if (send_message_buf_) { |
| grpc_byte_buffer_destroy(send_message_buf_); |
| send_message_buf_ = nullptr; |
| } |
| if (initial_metadata_) { |
| gpr_free(initial_metadata_); |
| initial_metadata_ = nullptr; |
| } |
| if (trailing_metadata_count_) { |
| gpr_free(trailing_metadata_); |
| trailing_metadata_ = nullptr; |
| } |
| // Set user-facing tag. |
| *tag = return_tag_; |
| // Process received initial metadata |
| if (recv_initial_metadata_) { |
| FillMetadataMap(&recv_initial_metadata_arr_, recv_initial_metadata_); |
| } |
| // Parse received message if any. |
| if (recv_message_) { |
| if (recv_message_buf_) { |
| got_message = *status; |
| *status = *status && DeserializeProto(recv_message_buf_, recv_message_); |
| grpc_byte_buffer_destroy(recv_message_buf_); |
| recv_message_buf_ = nullptr; |
| } else { |
| // Read failed |
| got_message = false; |
| *status = false; |
| } |
| } |
| // Parse received status. |
| if (recv_status_) { |
| FillMetadataMap(&recv_trailing_metadata_arr_, recv_trailing_metadata_); |
| *recv_status_ = Status( |
| static_cast<StatusCode>(status_code_), |
| status_details_ ? grpc::string(status_details_) : grpc::string()); |
| } |
| if (recv_closed_) { |
| *recv_closed_ = cancelled_buf_ != 0; |
| } |
| return true; |
| } |
| |
| Call::Call(grpc_call* call, CallHook* call_hook, CompletionQueue* cq) |
| : call_hook_(call_hook), cq_(cq), call_(call) {} |
| |
| void Call::PerformOps(CallOpBuffer* buffer) { |
| call_hook_->PerformOpsOnCall(buffer, this); |
| } |
| |
| } // namespace grpc |