mirror of https://github.com/grpc/grpc.git
Merge branch 'master' of https://github.com/grpc/grpc into moiz-upb
Nicolas "Pixel" Noble
6 years ago
commit
d01633944c
70 changed files with 5930 additions and 4797 deletions
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/*
|
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* |
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* Copyright 2015 gRPC authors. |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0
|
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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* |
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*/ |
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|
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#ifndef GRPCPP_IMPL_CODEGEN_ASYNC_UNARY_CALL_IMPL_H |
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#define GRPCPP_IMPL_CODEGEN_ASYNC_UNARY_CALL_IMPL_H |
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|
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#include <assert.h> |
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#include <grpcpp/impl/codegen/call.h> |
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#include <grpcpp/impl/codegen/channel_interface.h> |
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#include <grpcpp/impl/codegen/client_context_impl.h> |
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#include <grpcpp/impl/codegen/server_context_impl.h> |
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#include <grpcpp/impl/codegen/service_type.h> |
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#include <grpcpp/impl/codegen/status.h> |
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|
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namespace grpc_impl { |
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|
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/// An interface relevant for async client side unary RPCs (which send
|
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/// one request message to a server and receive one response message).
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template <class R> |
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class ClientAsyncResponseReaderInterface { |
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public: |
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virtual ~ClientAsyncResponseReaderInterface() {} |
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|
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/// Start the call that was set up by the constructor, but only if the
|
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/// constructor was invoked through the "Prepare" API which doesn't actually
|
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/// start the call
|
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virtual void StartCall() = 0; |
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|
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/// Request notification of the reading of initial metadata. Completion
|
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/// will be notified by \a tag on the associated completion queue.
|
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/// This call is optional, but if it is used, it cannot be used concurrently
|
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/// with or after the \a Finish method.
|
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///
|
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/// \param[in] tag Tag identifying this request.
|
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virtual void ReadInitialMetadata(void* tag) = 0; |
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|
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/// Request to receive the server's response \a msg and final \a status for
|
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/// the call, and to notify \a tag on this call's completion queue when
|
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/// finished.
|
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///
|
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/// This function will return when either:
|
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/// - when the server's response message and status have been received.
|
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/// - when the server has returned a non-OK status (no message expected in
|
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/// this case).
|
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/// - when the call failed for some reason and the library generated a
|
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/// non-OK status.
|
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///
|
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/// \param[in] tag Tag identifying this request.
|
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/// \param[out] status To be updated with the operation status.
|
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/// \param[out] msg To be filled in with the server's response message.
|
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virtual void Finish(R* msg, ::grpc::Status* status, void* tag) = 0; |
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}; |
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|
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namespace internal { |
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template <class R> |
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class ClientAsyncResponseReaderFactory { |
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public: |
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/// Start a call and write the request out if \a start is set.
|
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/// \a tag will be notified on \a cq when the call has been started (i.e.
|
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/// intitial metadata sent) and \a request has been written out.
|
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/// If \a start is not set, the actual call must be initiated by StartCall
|
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/// Note that \a context will be used to fill in custom initial metadata
|
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/// used to send to the server when starting the call.
|
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template <class W> |
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static ClientAsyncResponseReader<R>* Create( |
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::grpc::ChannelInterface* channel, ::grpc_impl::CompletionQueue* cq, |
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const ::grpc::internal::RpcMethod& method, |
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::grpc_impl::ClientContext* context, const W& request, bool start) { |
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::grpc::internal::Call call = channel->CreateCall(method, context, cq); |
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return new (::grpc::g_core_codegen_interface->grpc_call_arena_alloc( |
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call.call(), sizeof(ClientAsyncResponseReader<R>))) |
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ClientAsyncResponseReader<R>(call, context, request, start); |
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} |
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}; |
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} // namespace internal
|
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|
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/// Async API for client-side unary RPCs, where the message response
|
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/// received from the server is of type \a R.
|
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template <class R> |
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class ClientAsyncResponseReader final |
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: public ClientAsyncResponseReaderInterface<R> { |
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public: |
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// always allocated against a call arena, no memory free required
|
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static void operator delete(void* ptr, std::size_t size) { |
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assert(size == sizeof(ClientAsyncResponseReader)); |
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} |
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|
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// This operator should never be called as the memory should be freed as part
|
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// of the arena destruction. It only exists to provide a matching operator
|
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// delete to the operator new so that some compilers will not complain (see
|
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// https://github.com/grpc/grpc/issues/11301) Note at the time of adding this
|
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// there are no tests catching the compiler warning.
|
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static void operator delete(void*, void*) { assert(0); } |
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|
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void StartCall() override { |
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assert(!started_); |
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started_ = true; |
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StartCallInternal(); |
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} |
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|
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/// See \a ClientAsyncResponseReaderInterface::ReadInitialMetadata for
|
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/// semantics.
|
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///
|
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/// Side effect:
|
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/// - the \a ClientContext associated with this call is updated with
|
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/// possible initial and trailing metadata sent from the server.
|
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void ReadInitialMetadata(void* tag) override { |
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assert(started_); |
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GPR_CODEGEN_ASSERT(!context_->initial_metadata_received_); |
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|
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single_buf.set_output_tag(tag); |
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single_buf.RecvInitialMetadata(context_); |
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call_.PerformOps(&single_buf); |
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initial_metadata_read_ = true; |
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} |
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|
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/// See \a ClientAysncResponseReaderInterface::Finish for semantics.
|
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///
|
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/// Side effect:
|
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/// - the \a ClientContext associated with this call is updated with
|
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/// possible initial and trailing metadata sent from the server.
|
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void Finish(R* msg, ::grpc::Status* status, void* tag) override { |
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assert(started_); |
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if (initial_metadata_read_) { |
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finish_buf.set_output_tag(tag); |
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finish_buf.RecvMessage(msg); |
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finish_buf.AllowNoMessage(); |
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finish_buf.ClientRecvStatus(context_, status); |
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call_.PerformOps(&finish_buf); |
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} else { |
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single_buf.set_output_tag(tag); |
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single_buf.RecvInitialMetadata(context_); |
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single_buf.RecvMessage(msg); |
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single_buf.AllowNoMessage(); |
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single_buf.ClientRecvStatus(context_, status); |
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call_.PerformOps(&single_buf); |
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} |
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} |
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|
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private: |
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friend class internal::ClientAsyncResponseReaderFactory<R>; |
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::grpc_impl::ClientContext* const context_; |
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::grpc::internal::Call call_; |
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bool started_; |
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bool initial_metadata_read_ = false; |
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|
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template <class W> |
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ClientAsyncResponseReader(::grpc::internal::Call call, |
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::grpc_impl::ClientContext* context, |
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const W& request, bool start) |
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: context_(context), call_(call), started_(start) { |
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// Bind the metadata at time of StartCallInternal but set up the rest here
|
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// TODO(ctiller): don't assert
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GPR_CODEGEN_ASSERT(single_buf.SendMessage(request).ok()); |
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single_buf.ClientSendClose(); |
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if (start) StartCallInternal(); |
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} |
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|
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void StartCallInternal() { |
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single_buf.SendInitialMetadata(&context_->send_initial_metadata_, |
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context_->initial_metadata_flags()); |
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} |
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|
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// disable operator new
|
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static void* operator new(std::size_t size); |
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static void* operator new(std::size_t size, void* p) { return p; } |
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|
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::grpc::internal::CallOpSet<::grpc::internal::CallOpSendInitialMetadata, |
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::grpc::internal::CallOpSendMessage, |
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::grpc::internal::CallOpClientSendClose, |
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::grpc::internal::CallOpRecvInitialMetadata, |
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::grpc::internal::CallOpRecvMessage<R>, |
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::grpc::internal::CallOpClientRecvStatus> |
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single_buf; |
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::grpc::internal::CallOpSet<::grpc::internal::CallOpRecvMessage<R>, |
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::grpc::internal::CallOpClientRecvStatus> |
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finish_buf; |
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}; |
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|
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/// Async server-side API for handling unary calls, where the single
|
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/// response message sent to the client is of type \a W.
|
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template <class W> |
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class ServerAsyncResponseWriter final |
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: public ::grpc::internal::ServerAsyncStreamingInterface { |
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public: |
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explicit ServerAsyncResponseWriter(::grpc_impl::ServerContext* ctx) |
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: call_(nullptr, nullptr, nullptr), ctx_(ctx) {} |
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|
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/// See \a ServerAsyncStreamingInterface::SendInitialMetadata for semantics.
|
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///
|
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/// Side effect:
|
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/// The initial metadata that will be sent to the client from this op will
|
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/// be taken from the \a ServerContext associated with the call.
|
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///
|
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/// \param[in] tag Tag identifying this request.
|
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void SendInitialMetadata(void* tag) override { |
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GPR_CODEGEN_ASSERT(!ctx_->sent_initial_metadata_); |
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|
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meta_buf_.set_output_tag(tag); |
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meta_buf_.SendInitialMetadata(&ctx_->initial_metadata_, |
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ctx_->initial_metadata_flags()); |
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if (ctx_->compression_level_set()) { |
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meta_buf_.set_compression_level(ctx_->compression_level()); |
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} |
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ctx_->sent_initial_metadata_ = true; |
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call_.PerformOps(&meta_buf_); |
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} |
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|
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/// Indicate that the stream is to be finished and request notification
|
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/// when the server has sent the appropriate signals to the client to
|
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/// end the call. Should not be used concurrently with other operations.
|
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///
|
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/// \param[in] tag Tag identifying this request.
|
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/// \param[in] status To be sent to the client as the result of the call.
|
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/// \param[in] msg Message to be sent to the client.
|
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///
|
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/// Side effect:
|
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/// - also sends initial metadata if not already sent (using the
|
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/// \a ServerContext associated with this call).
|
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///
|
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/// Note: if \a status has a non-OK code, then \a msg will not be sent,
|
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/// and the client will receive only the status with possible trailing
|
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/// metadata.
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void Finish(const W& msg, const ::grpc::Status& status, void* tag) { |
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finish_buf_.set_output_tag(tag); |
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finish_buf_.set_core_cq_tag(&finish_buf_); |
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if (!ctx_->sent_initial_metadata_) { |
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finish_buf_.SendInitialMetadata(&ctx_->initial_metadata_, |
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ctx_->initial_metadata_flags()); |
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if (ctx_->compression_level_set()) { |
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finish_buf_.set_compression_level(ctx_->compression_level()); |
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} |
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ctx_->sent_initial_metadata_ = true; |
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} |
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// The response is dropped if the status is not OK.
|
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if (status.ok()) { |
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finish_buf_.ServerSendStatus(&ctx_->trailing_metadata_, |
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finish_buf_.SendMessage(msg)); |
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} else { |
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finish_buf_.ServerSendStatus(&ctx_->trailing_metadata_, status); |
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} |
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call_.PerformOps(&finish_buf_); |
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} |
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|
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/// Indicate that the stream is to be finished with a non-OK status,
|
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/// and request notification for when the server has finished sending the
|
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/// appropriate signals to the client to end the call.
|
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/// Should not be used concurrently with other operations.
|
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///
|
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/// \param[in] tag Tag identifying this request.
|
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/// \param[in] status To be sent to the client as the result of the call.
|
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/// - Note: \a status must have a non-OK code.
|
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///
|
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/// Side effect:
|
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/// - also sends initial metadata if not already sent (using the
|
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/// \a ServerContext associated with this call).
|
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void FinishWithError(const ::grpc::Status& status, void* tag) { |
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GPR_CODEGEN_ASSERT(!status.ok()); |
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finish_buf_.set_output_tag(tag); |
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if (!ctx_->sent_initial_metadata_) { |
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finish_buf_.SendInitialMetadata(&ctx_->initial_metadata_, |
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ctx_->initial_metadata_flags()); |
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if (ctx_->compression_level_set()) { |
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finish_buf_.set_compression_level(ctx_->compression_level()); |
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} |
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ctx_->sent_initial_metadata_ = true; |
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} |
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finish_buf_.ServerSendStatus(&ctx_->trailing_metadata_, status); |
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call_.PerformOps(&finish_buf_); |
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} |
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|
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private: |
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void BindCall(::grpc::internal::Call* call) override { call_ = *call; } |
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|
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::grpc::internal::Call call_; |
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::grpc_impl::ServerContext* ctx_; |
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::grpc::internal::CallOpSet<::grpc::internal::CallOpSendInitialMetadata> |
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meta_buf_; |
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::grpc::internal::CallOpSet<::grpc::internal::CallOpSendInitialMetadata, |
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::grpc::internal::CallOpSendMessage, |
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::grpc::internal::CallOpServerSendStatus> |
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finish_buf_; |
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}; |
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|
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} // namespace grpc_impl
|
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|
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namespace std { |
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template <class R> |
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class default_delete<::grpc_impl::ClientAsyncResponseReader<R>> { |
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public: |
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void operator()(void* p) {} |
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}; |
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template <class R> |
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class default_delete<::grpc_impl::ClientAsyncResponseReaderInterface<R>> { |
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public: |
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void operator()(void* p) {} |
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}; |
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} // namespace std
|
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|
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#endif // GRPCPP_IMPL_CODEGEN_ASYNC_UNARY_CALL_IMPL_H
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@ -0,0 +1,944 @@ |
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/*
|
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* |
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* Copyright 2019 gRPC authors. |
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* |
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* 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. |
||||
*/ |
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|
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#ifndef GRPCPP_IMPL_CODEGEN_SYNC_STREAM_IMPL_H |
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#define GRPCPP_IMPL_CODEGEN_SYNC_STREAM_IMPL_H |
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|
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#include <grpcpp/impl/codegen/call.h> |
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#include <grpcpp/impl/codegen/channel_interface.h> |
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#include <grpcpp/impl/codegen/client_context_impl.h> |
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#include <grpcpp/impl/codegen/completion_queue_impl.h> |
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#include <grpcpp/impl/codegen/core_codegen_interface.h> |
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#include <grpcpp/impl/codegen/server_context_impl.h> |
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#include <grpcpp/impl/codegen/service_type.h> |
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#include <grpcpp/impl/codegen/status.h> |
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|
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namespace grpc_impl { |
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|
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namespace internal { |
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/// Common interface for all synchronous client side streaming.
|
||||
class ClientStreamingInterface { |
||||
public: |
||||
virtual ~ClientStreamingInterface() {} |
||||
|
||||
/// Block waiting until the stream finishes and a final status of the call is
|
||||
/// available.
|
||||
///
|
||||
/// It is appropriate to call this method when both:
|
||||
/// * the calling code (client-side) has no more message to send
|
||||
/// (this can be declared implicitly by calling this method, or
|
||||
/// explicitly through an earlier call to <i>WritesDone</i> method of the
|
||||
/// class in use, e.g. \a ClientWriterInterface::WritesDone or
|
||||
/// \a ClientReaderWriterInterface::WritesDone).
|
||||
/// * there are no more messages to be received from the server (which can
|
||||
/// be known implicitly, or explicitly from an earlier call to \a
|
||||
/// ReaderInterface::Read that returned "false").
|
||||
///
|
||||
/// This function will return either:
|
||||
/// - when all incoming messages have been read and the server has
|
||||
/// returned status.
|
||||
/// - when the server has returned a non-OK status.
|
||||
/// - OR when the call failed for some reason and the library generated a
|
||||
/// status.
|
||||
///
|
||||
/// Return values:
|
||||
/// - \a Status contains the status code, message and details for the call
|
||||
/// - the \a ClientContext associated with this call is updated with
|
||||
/// possible trailing metadata sent from the server.
|
||||
virtual ::grpc::Status Finish() = 0; |
||||
}; |
||||
|
||||
/// Common interface for all synchronous server side streaming.
|
||||
class ServerStreamingInterface { |
||||
public: |
||||
virtual ~ServerStreamingInterface() {} |
||||
|
||||
/// Block to send initial metadata to client.
|
||||
/// This call is optional, but if it is used, it cannot be used concurrently
|
||||
/// with or after the \a Finish method.
|
||||
///
|
||||
/// The initial metadata that will be sent to the client will be
|
||||
/// taken from the \a ServerContext associated with the call.
|
||||
virtual void SendInitialMetadata() = 0; |
||||
}; |
||||
|
||||
/// An interface that yields a sequence of messages of type \a R.
|
||||
template <class R> |
||||
class ReaderInterface { |
||||
public: |
||||
virtual ~ReaderInterface() {} |
||||
|
||||
/// Get an upper bound on the next message size available for reading on this
|
||||
/// stream.
|
||||
virtual bool NextMessageSize(uint32_t* sz) = 0; |
||||
|
||||
/// Block to read a message and parse to \a msg. Returns \a true on success.
|
||||
/// This is thread-safe with respect to \a Write or \WritesDone methods on
|
||||
/// the same stream. It should not be called concurrently with another \a
|
||||
/// Read on the same stream as the order of delivery will not be defined.
|
||||
///
|
||||
/// \param[out] msg The read message.
|
||||
///
|
||||
/// \return \a false when there will be no more incoming messages, either
|
||||
/// because the other side has called \a WritesDone() or the stream has failed
|
||||
/// (or been cancelled).
|
||||
virtual bool Read(R* msg) = 0; |
||||
}; |
||||
|
||||
/// An interface that can be fed a sequence of messages of type \a W.
|
||||
template <class W> |
||||
class WriterInterface { |
||||
public: |
||||
virtual ~WriterInterface() {} |
||||
|
||||
/// Block to write \a msg to the stream with WriteOptions \a options.
|
||||
/// This is thread-safe with respect to \a ReaderInterface::Read
|
||||
///
|
||||
/// \param msg The message to be written to the stream.
|
||||
/// \param options The WriteOptions affecting the write operation.
|
||||
///
|
||||
/// \return \a true on success, \a false when the stream has been closed.
|
||||
virtual bool Write(const W& msg, ::grpc::WriteOptions options) = 0; |
||||
|
||||
/// Block to write \a msg to the stream with default write options.
|
||||
/// This is thread-safe with respect to \a ReaderInterface::Read
|
||||
///
|
||||
/// \param msg The message to be written to the stream.
|
||||
///
|
||||
/// \return \a true on success, \a false when the stream has been closed.
|
||||
inline bool Write(const W& msg) { return Write(msg, ::grpc::WriteOptions()); } |
||||
|
||||
/// Write \a msg and coalesce it with the writing of trailing metadata, using
|
||||
/// WriteOptions \a options.
|
||||
///
|
||||
/// For client, WriteLast is equivalent of performing Write and WritesDone in
|
||||
/// a single step. \a msg and trailing metadata are coalesced and sent on wire
|
||||
/// by calling this function. For server, WriteLast buffers the \a msg.
|
||||
/// The writing of \a msg is held until the service handler returns,
|
||||
/// where \a msg and trailing metadata are coalesced and sent on wire.
|
||||
/// Note that WriteLast can only buffer \a msg up to the flow control window
|
||||
/// size. If \a msg size is larger than the window size, it will be sent on
|
||||
/// wire without buffering.
|
||||
///
|
||||
/// \param[in] msg The message to be written to the stream.
|
||||
/// \param[in] options The WriteOptions to be used to write this message.
|
||||
void WriteLast(const W& msg, ::grpc::WriteOptions options) { |
||||
Write(msg, options.set_last_message()); |
||||
} |
||||
}; |
||||
|
||||
} // namespace internal
|
||||
|
||||
/// Client-side interface for streaming reads of message of type \a R.
|
||||
template <class R> |
||||
class ClientReaderInterface : public internal::ClientStreamingInterface, |
||||
public internal::ReaderInterface<R> { |
||||
public: |
||||
/// Block to wait for initial metadata from server. The received metadata
|
||||
/// can only be accessed after this call returns. Should only be called before
|
||||
/// the first read. Calling this method is optional, and if it is not called
|
||||
/// the metadata will be available in ClientContext after the first read.
|
||||
virtual void WaitForInitialMetadata() = 0; |
||||
}; |
||||
|
||||
namespace internal { |
||||
template <class R> |
||||
class ClientReaderFactory { |
||||
public: |
||||
template <class W> |
||||
static ClientReader<R>* Create(::grpc::ChannelInterface* channel, |
||||
const ::grpc::internal::RpcMethod& method, |
||||
::grpc_impl::ClientContext* context, |
||||
const W& request) { |
||||
return new ClientReader<R>(channel, method, context, request); |
||||
} |
||||
}; |
||||
} // namespace internal
|
||||
|
||||
/// Synchronous (blocking) client-side API for doing server-streaming RPCs,
|
||||
/// where the stream of messages coming from the server has messages
|
||||
/// of type \a R.
|
||||
template <class R> |
||||
class ClientReader final : public ClientReaderInterface<R> { |
||||
public: |
||||
/// See the \a ClientStreamingInterface.WaitForInitialMetadata method for
|
||||
/// semantics.
|
||||
///
|
||||
// Side effect:
|
||||
/// Once complete, the initial metadata read from
|
||||
/// the server will be accessible through the \a ClientContext used to
|
||||
/// construct this object.
|
||||
void WaitForInitialMetadata() override { |
||||
GPR_CODEGEN_ASSERT(!context_->initial_metadata_received_); |
||||
|
||||
::grpc::internal::CallOpSet<::grpc::internal::CallOpRecvInitialMetadata> |
||||
ops; |
||||
ops.RecvInitialMetadata(context_); |
||||
call_.PerformOps(&ops); |
||||
cq_.Pluck(&ops); /// status ignored
|
||||
} |
||||
|
||||
bool NextMessageSize(uint32_t* sz) override { |
||||
*sz = call_.max_receive_message_size(); |
||||
return true; |
||||
} |
||||
|
||||
/// See the \a ReaderInterface.Read method for semantics.
|
||||
/// Side effect:
|
||||
/// This also receives initial metadata from the server, if not
|
||||
/// already received (if initial metadata is received, it can be then
|
||||
/// accessed through the \a ClientContext associated with this call).
|
||||
bool Read(R* msg) override { |
||||
::grpc::internal::CallOpSet<::grpc::internal::CallOpRecvInitialMetadata, |
||||
::grpc::internal::CallOpRecvMessage<R>> |
||||
ops; |
||||
if (!context_->initial_metadata_received_) { |
||||
ops.RecvInitialMetadata(context_); |
||||
} |
||||
ops.RecvMessage(msg); |
||||
call_.PerformOps(&ops); |
||||
return cq_.Pluck(&ops) && ops.got_message; |
||||
} |
||||
|
||||
/// See the \a ClientStreamingInterface.Finish method for semantics.
|
||||
///
|
||||
/// Side effect:
|
||||
/// The \a ClientContext associated with this call is updated with
|
||||
/// possible metadata received from the server.
|
||||
::grpc::Status Finish() override { |
||||
::grpc::internal::CallOpSet<::grpc::internal::CallOpClientRecvStatus> ops; |
||||
::grpc::Status status; |
||||
ops.ClientRecvStatus(context_, &status); |
||||
call_.PerformOps(&ops); |
||||
GPR_CODEGEN_ASSERT(cq_.Pluck(&ops)); |
||||
return status; |
||||
} |
||||
|
||||
private: |
||||
friend class internal::ClientReaderFactory<R>; |
||||
::grpc_impl::ClientContext* context_; |
||||
::grpc_impl::CompletionQueue cq_; |
||||
::grpc::internal::Call call_; |
||||
|
||||
/// Block to create a stream and write the initial metadata and \a request
|
||||
/// out. Note that \a context will be used to fill in custom initial
|
||||
/// metadata used to send to the server when starting the call.
|
||||
template <class W> |
||||
ClientReader(::grpc::ChannelInterface* channel, |
||||
const ::grpc::internal::RpcMethod& method, |
||||
::grpc_impl::ClientContext* context, const W& request) |
||||
: context_(context), |
||||
cq_(grpc_completion_queue_attributes{ |
||||
GRPC_CQ_CURRENT_VERSION, GRPC_CQ_PLUCK, GRPC_CQ_DEFAULT_POLLING, |
||||
nullptr}), // Pluckable cq
|
||||
call_(channel->CreateCall(method, context, &cq_)) { |
||||
::grpc::internal::CallOpSet<::grpc::internal::CallOpSendInitialMetadata, |
||||
::grpc::internal::CallOpSendMessage, |
||||
::grpc::internal::CallOpClientSendClose> |
||||
ops; |
||||
ops.SendInitialMetadata(&context->send_initial_metadata_, |
||||
context->initial_metadata_flags()); |
||||
// TODO(ctiller): don't assert
|
||||
GPR_CODEGEN_ASSERT(ops.SendMessagePtr(&request).ok()); |
||||
ops.ClientSendClose(); |
||||
call_.PerformOps(&ops); |
||||
cq_.Pluck(&ops); |
||||
} |
||||
}; |
||||
|
||||
/// Client-side interface for streaming writes of message type \a W.
|
||||
template <class W> |
||||
class ClientWriterInterface : public internal::ClientStreamingInterface, |
||||
public internal::WriterInterface<W> { |
||||
public: |
||||
/// Half close writing from the client. (signal that the stream of messages
|
||||
/// coming from the client is complete).
|
||||
/// Blocks until currently-pending writes are completed.
|
||||
/// Thread safe with respect to \a ReaderInterface::Read operations only
|
||||
///
|
||||
/// \return Whether the writes were successful.
|
||||
virtual bool WritesDone() = 0; |
||||
}; |
||||
|
||||
namespace internal { |
||||
template <class W> |
||||
class ClientWriterFactory { |
||||
public: |
||||
template <class R> |
||||
static ClientWriter<W>* Create(::grpc::ChannelInterface* channel, |
||||
const ::grpc::internal::RpcMethod& method, |
||||
::grpc_impl::ClientContext* context, |
||||
R* response) { |
||||
return new ClientWriter<W>(channel, method, context, response); |
||||
} |
||||
}; |
||||
} // namespace internal
|
||||
|
||||
/// Synchronous (blocking) client-side API for doing client-streaming RPCs,
|
||||
/// where the outgoing message stream coming from the client has messages of
|
||||
/// type \a W.
|
||||
template <class W> |
||||
class ClientWriter : public ClientWriterInterface<W> { |
||||
public: |
||||
/// See the \a ClientStreamingInterface.WaitForInitialMetadata method for
|
||||
/// semantics.
|
||||
///
|
||||
// Side effect:
|
||||
/// Once complete, the initial metadata read from the server will be
|
||||
/// accessible through the \a ClientContext used to construct this object.
|
||||
void WaitForInitialMetadata() { |
||||
GPR_CODEGEN_ASSERT(!context_->initial_metadata_received_); |
||||
|
||||
::grpc::internal::CallOpSet<::grpc::internal::CallOpRecvInitialMetadata> |
||||
ops; |
||||
ops.RecvInitialMetadata(context_); |
||||
call_.PerformOps(&ops); |
||||
cq_.Pluck(&ops); // status ignored
|
||||
} |
||||
|
||||
/// See the WriterInterface.Write(const W& msg, WriteOptions options) method
|
||||
/// for semantics.
|
||||
///
|
||||
/// Side effect:
|
||||
/// Also sends initial metadata if not already sent (using the
|
||||
/// \a ClientContext associated with this call).
|
||||
using internal::WriterInterface<W>::Write; |
||||
bool Write(const W& msg, ::grpc::WriteOptions options) override { |
||||
::grpc::internal::CallOpSet<::grpc::internal::CallOpSendInitialMetadata, |
||||
::grpc::internal::CallOpSendMessage, |
||||
::grpc::internal::CallOpClientSendClose> |
||||
ops; |
||||
|
||||
if (options.is_last_message()) { |
||||
options.set_buffer_hint(); |
||||
ops.ClientSendClose(); |
||||
} |
||||
if (context_->initial_metadata_corked_) { |
||||
ops.SendInitialMetadata(&context_->send_initial_metadata_, |
||||
context_->initial_metadata_flags()); |
||||
context_->set_initial_metadata_corked(false); |
||||
} |
||||
if (!ops.SendMessagePtr(&msg, options).ok()) { |
||||
return false; |
||||
} |
||||
|
||||
call_.PerformOps(&ops); |
||||
return cq_.Pluck(&ops); |
||||
} |
||||
|
||||
bool WritesDone() override { |
||||
::grpc::internal::CallOpSet<::grpc::internal::CallOpClientSendClose> ops; |
||||
ops.ClientSendClose(); |
||||
call_.PerformOps(&ops); |
||||
return cq_.Pluck(&ops); |
||||
} |
||||
|
||||
/// See the ClientStreamingInterface.Finish method for semantics.
|
||||
/// Side effects:
|
||||
/// - Also receives initial metadata if not already received.
|
||||
/// - Attempts to fill in the \a response parameter passed
|
||||
/// to the constructor of this instance with the response
|
||||
/// message from the server.
|
||||
::grpc::Status Finish() override { |
||||
::grpc::Status status; |
||||
if (!context_->initial_metadata_received_) { |
||||
finish_ops_.RecvInitialMetadata(context_); |
||||
} |
||||
finish_ops_.ClientRecvStatus(context_, &status); |
||||
call_.PerformOps(&finish_ops_); |
||||
GPR_CODEGEN_ASSERT(cq_.Pluck(&finish_ops_)); |
||||
return status; |
||||
} |
||||
|
||||
private: |
||||
friend class internal::ClientWriterFactory<W>; |
||||
|
||||
/// Block to create a stream (i.e. send request headers and other initial
|
||||
/// metadata to the server). Note that \a context will be used to fill
|
||||
/// in custom initial metadata. \a response will be filled in with the
|
||||
/// single expected response message from the server upon a successful
|
||||
/// call to the \a Finish method of this instance.
|
||||
template <class R> |
||||
ClientWriter(::grpc::ChannelInterface* channel, |
||||
const ::grpc::internal::RpcMethod& method, |
||||
::grpc_impl::ClientContext* context, R* response) |
||||
: context_(context), |
||||
cq_(grpc_completion_queue_attributes{ |
||||
GRPC_CQ_CURRENT_VERSION, GRPC_CQ_PLUCK, GRPC_CQ_DEFAULT_POLLING, |
||||
nullptr}), // Pluckable cq
|
||||
call_(channel->CreateCall(method, context, &cq_)) { |
||||
finish_ops_.RecvMessage(response); |
||||
finish_ops_.AllowNoMessage(); |
||||
|
||||
if (!context_->initial_metadata_corked_) { |
||||
::grpc::internal::CallOpSet<::grpc::internal::CallOpSendInitialMetadata> |
||||
ops; |
||||
ops.SendInitialMetadata(&context->send_initial_metadata_, |
||||
context->initial_metadata_flags()); |
||||
call_.PerformOps(&ops); |
||||
cq_.Pluck(&ops); |
||||
} |
||||
} |
||||
|
||||
::grpc_impl::ClientContext* context_; |
||||
::grpc::internal::CallOpSet<::grpc::internal::CallOpRecvInitialMetadata, |
||||
::grpc::internal::CallOpGenericRecvMessage, |
||||
::grpc::internal::CallOpClientRecvStatus> |
||||
finish_ops_; |
||||
::grpc_impl::CompletionQueue cq_; |
||||
::grpc::internal::Call call_; |
||||
}; |
||||
|
||||
/// Client-side interface for bi-directional streaming with
|
||||
/// client-to-server stream messages of type \a W and
|
||||
/// server-to-client stream messages of type \a R.
|
||||
template <class W, class R> |
||||
class ClientReaderWriterInterface : public internal::ClientStreamingInterface, |
||||
public internal::WriterInterface<W>, |
||||
public internal::ReaderInterface<R> { |
||||
public: |
||||
/// Block to wait for initial metadata from server. The received metadata
|
||||
/// can only be accessed after this call returns. Should only be called before
|
||||
/// the first read. Calling this method is optional, and if it is not called
|
||||
/// the metadata will be available in ClientContext after the first read.
|
||||
virtual void WaitForInitialMetadata() = 0; |
||||
|
||||
/// Half close writing from the client. (signal that the stream of messages
|
||||
/// coming from the clinet is complete).
|
||||
/// Blocks until currently-pending writes are completed.
|
||||
/// Thread-safe with respect to \a ReaderInterface::Read
|
||||
///
|
||||
/// \return Whether the writes were successful.
|
||||
virtual bool WritesDone() = 0; |
||||
}; |
||||
|
||||
namespace internal { |
||||
template <class W, class R> |
||||
class ClientReaderWriterFactory { |
||||
public: |
||||
static ClientReaderWriter<W, R>* Create( |
||||
::grpc::ChannelInterface* channel, |
||||
const ::grpc::internal::RpcMethod& method, |
||||
::grpc_impl::ClientContext* context) { |
||||
return new ClientReaderWriter<W, R>(channel, method, context); |
||||
} |
||||
}; |
||||
} // namespace internal
|
||||
|
||||
/// Synchronous (blocking) client-side API for bi-directional streaming RPCs,
|
||||
/// where the outgoing message stream coming from the client has messages of
|
||||
/// type \a W, and the incoming messages stream coming from the server has
|
||||
/// messages of type \a R.
|
||||
template <class W, class R> |
||||
class ClientReaderWriter final : public ClientReaderWriterInterface<W, R> { |
||||
public: |
||||
/// Block waiting to read initial metadata from the server.
|
||||
/// This call is optional, but if it is used, it cannot be used concurrently
|
||||
/// with or after the \a Finish method.
|
||||
///
|
||||
/// Once complete, the initial metadata read from the server will be
|
||||
/// accessible through the \a ClientContext used to construct this object.
|
||||
void WaitForInitialMetadata() override { |
||||
GPR_CODEGEN_ASSERT(!context_->initial_metadata_received_); |
||||
|
||||
::grpc::internal::CallOpSet<::grpc::internal::CallOpRecvInitialMetadata> |
||||
ops; |
||||
ops.RecvInitialMetadata(context_); |
||||
call_.PerformOps(&ops); |
||||
cq_.Pluck(&ops); // status ignored
|
||||
} |
||||
|
||||
bool NextMessageSize(uint32_t* sz) override { |
||||
*sz = call_.max_receive_message_size(); |
||||
return true; |
||||
} |
||||
|
||||
/// See the \a ReaderInterface.Read method for semantics.
|
||||
/// Side effect:
|
||||
/// Also receives initial metadata if not already received (updates the \a
|
||||
/// ClientContext associated with this call in that case).
|
||||
bool Read(R* msg) override { |
||||
::grpc::internal::CallOpSet<::grpc::internal::CallOpRecvInitialMetadata, |
||||
::grpc::internal::CallOpRecvMessage<R>> |
||||
ops; |
||||
if (!context_->initial_metadata_received_) { |
||||
ops.RecvInitialMetadata(context_); |
||||
} |
||||
ops.RecvMessage(msg); |
||||
call_.PerformOps(&ops); |
||||
return cq_.Pluck(&ops) && ops.got_message; |
||||
} |
||||
|
||||
/// See the \a WriterInterface.Write method for semantics.
|
||||
///
|
||||
/// Side effect:
|
||||
/// Also sends initial metadata if not already sent (using the
|
||||
/// \a ClientContext associated with this call to fill in values).
|
||||
using internal::WriterInterface<W>::Write; |
||||
bool Write(const W& msg, ::grpc::WriteOptions options) override { |
||||
::grpc::internal::CallOpSet<::grpc::internal::CallOpSendInitialMetadata, |
||||
::grpc::internal::CallOpSendMessage, |
||||
::grpc::internal::CallOpClientSendClose> |
||||
ops; |
||||
|
||||
if (options.is_last_message()) { |
||||
options.set_buffer_hint(); |
||||
ops.ClientSendClose(); |
||||
} |
||||
if (context_->initial_metadata_corked_) { |
||||
ops.SendInitialMetadata(&context_->send_initial_metadata_, |
||||
context_->initial_metadata_flags()); |
||||
context_->set_initial_metadata_corked(false); |
||||
} |
||||
if (!ops.SendMessagePtr(&msg, options).ok()) { |
||||
return false; |
||||
} |
||||
|
||||
call_.PerformOps(&ops); |
||||
return cq_.Pluck(&ops); |
||||
} |
||||
|
||||
bool WritesDone() override { |
||||
::grpc::internal::CallOpSet<::grpc::internal::CallOpClientSendClose> ops; |
||||
ops.ClientSendClose(); |
||||
call_.PerformOps(&ops); |
||||
return cq_.Pluck(&ops); |
||||
} |
||||
|
||||
/// See the ClientStreamingInterface.Finish method for semantics.
|
||||
///
|
||||
/// Side effect:
|
||||
/// - the \a ClientContext associated with this call is updated with
|
||||
/// possible trailing metadata sent from the server.
|
||||
::grpc::Status Finish() override { |
||||
::grpc::internal::CallOpSet<::grpc::internal::CallOpRecvInitialMetadata, |
||||
::grpc::internal::CallOpClientRecvStatus> |
||||
ops; |
||||
if (!context_->initial_metadata_received_) { |
||||
ops.RecvInitialMetadata(context_); |
||||
} |
||||
::grpc::Status status; |
||||
ops.ClientRecvStatus(context_, &status); |
||||
call_.PerformOps(&ops); |
||||
GPR_CODEGEN_ASSERT(cq_.Pluck(&ops)); |
||||
return status; |
||||
} |
||||
|
||||
private: |
||||
friend class internal::ClientReaderWriterFactory<W, R>; |
||||
|
||||
::grpc_impl::ClientContext* context_; |
||||
::grpc_impl::CompletionQueue cq_; |
||||
::grpc::internal::Call call_; |
||||
|
||||
/// Block to create a stream and write the initial metadata and \a request
|
||||
/// out. Note that \a context will be used to fill in custom initial metadata
|
||||
/// used to send to the server when starting the call.
|
||||
ClientReaderWriter(::grpc::ChannelInterface* channel, |
||||
const ::grpc::internal::RpcMethod& method, |
||||
::grpc_impl::ClientContext* context) |
||||
: context_(context), |
||||
cq_(grpc_completion_queue_attributes{ |
||||
GRPC_CQ_CURRENT_VERSION, GRPC_CQ_PLUCK, GRPC_CQ_DEFAULT_POLLING, |
||||
nullptr}), // Pluckable cq
|
||||
call_(channel->CreateCall(method, context, &cq_)) { |
||||
if (!context_->initial_metadata_corked_) { |
||||
::grpc::internal::CallOpSet<::grpc::internal::CallOpSendInitialMetadata> |
||||
ops; |
||||
ops.SendInitialMetadata(&context->send_initial_metadata_, |
||||
context->initial_metadata_flags()); |
||||
call_.PerformOps(&ops); |
||||
cq_.Pluck(&ops); |
||||
} |
||||
} |
||||
}; |
||||
|
||||
/// Server-side interface for streaming reads of message of type \a R.
|
||||
template <class R> |
||||
class ServerReaderInterface : public internal::ServerStreamingInterface, |
||||
public internal::ReaderInterface<R> {}; |
||||
|
||||
/// Synchronous (blocking) server-side API for doing client-streaming RPCs,
|
||||
/// where the incoming message stream coming from the client has messages of
|
||||
/// type \a R.
|
||||
template <class R> |
||||
class ServerReader final : public ServerReaderInterface<R> { |
||||
public: |
||||
/// See the \a ServerStreamingInterface.SendInitialMetadata method
|
||||
/// for semantics. Note that initial metadata will be affected by the
|
||||
/// \a ServerContext associated with this call.
|
||||
void SendInitialMetadata() override { |
||||
GPR_CODEGEN_ASSERT(!ctx_->sent_initial_metadata_); |
||||
|
||||
::grpc::internal::CallOpSet<::grpc::internal::CallOpSendInitialMetadata> |
||||
ops; |
||||
ops.SendInitialMetadata(&ctx_->initial_metadata_, |
||||
ctx_->initial_metadata_flags()); |
||||
if (ctx_->compression_level_set()) { |
||||
ops.set_compression_level(ctx_->compression_level()); |
||||
} |
||||
ctx_->sent_initial_metadata_ = true; |
||||
call_->PerformOps(&ops); |
||||
call_->cq()->Pluck(&ops); |
||||
} |
||||
|
||||
bool NextMessageSize(uint32_t* sz) override { |
||||
*sz = call_->max_receive_message_size(); |
||||
return true; |
||||
} |
||||
|
||||
bool Read(R* msg) override { |
||||
::grpc::internal::CallOpSet<::grpc::internal::CallOpRecvMessage<R>> ops; |
||||
ops.RecvMessage(msg); |
||||
call_->PerformOps(&ops); |
||||
return call_->cq()->Pluck(&ops) && ops.got_message; |
||||
} |
||||
|
||||
private: |
||||
::grpc::internal::Call* const call_; |
||||
ServerContext* const ctx_; |
||||
|
||||
template <class ServiceType, class RequestType, class ResponseType> |
||||
friend class ::grpc::internal::ClientStreamingHandler; |
||||
|
||||
ServerReader(::grpc::internal::Call* call, ::grpc_impl::ServerContext* ctx) |
||||
: call_(call), ctx_(ctx) {} |
||||
}; |
||||
|
||||
/// Server-side interface for streaming writes of message of type \a W.
|
||||
template <class W> |
||||
class ServerWriterInterface : public internal::ServerStreamingInterface, |
||||
public internal::WriterInterface<W> {}; |
||||
|
||||
/// Synchronous (blocking) server-side API for doing for doing a
|
||||
/// server-streaming RPCs, where the outgoing message stream coming from the
|
||||
/// server has messages of type \a W.
|
||||
template <class W> |
||||
class ServerWriter final : public ServerWriterInterface<W> { |
||||
public: |
||||
/// See the \a ServerStreamingInterface.SendInitialMetadata method
|
||||
/// for semantics.
|
||||
/// Note that initial metadata will be affected by the
|
||||
/// \a ServerContext associated with this call.
|
||||
void SendInitialMetadata() override { |
||||
GPR_CODEGEN_ASSERT(!ctx_->sent_initial_metadata_); |
||||
|
||||
::grpc::internal::CallOpSet<::grpc::internal::CallOpSendInitialMetadata> |
||||
ops; |
||||
ops.SendInitialMetadata(&ctx_->initial_metadata_, |
||||
ctx_->initial_metadata_flags()); |
||||
if (ctx_->compression_level_set()) { |
||||
ops.set_compression_level(ctx_->compression_level()); |
||||
} |
||||
ctx_->sent_initial_metadata_ = true; |
||||
call_->PerformOps(&ops); |
||||
call_->cq()->Pluck(&ops); |
||||
} |
||||
|
||||
/// See the \a WriterInterface.Write method for semantics.
|
||||
///
|
||||
/// Side effect:
|
||||
/// Also sends initial metadata if not already sent (using the
|
||||
/// \a ClientContext associated with this call to fill in values).
|
||||
using internal::WriterInterface<W>::Write; |
||||
bool Write(const W& msg, ::grpc::WriteOptions options) override { |
||||
if (options.is_last_message()) { |
||||
options.set_buffer_hint(); |
||||
} |
||||
|
||||
if (!ctx_->pending_ops_.SendMessagePtr(&msg, options).ok()) { |
||||
return false; |
||||
} |
||||
if (!ctx_->sent_initial_metadata_) { |
||||
ctx_->pending_ops_.SendInitialMetadata(&ctx_->initial_metadata_, |
||||
ctx_->initial_metadata_flags()); |
||||
if (ctx_->compression_level_set()) { |
||||
ctx_->pending_ops_.set_compression_level(ctx_->compression_level()); |
||||
} |
||||
ctx_->sent_initial_metadata_ = true; |
||||
} |
||||
call_->PerformOps(&ctx_->pending_ops_); |
||||
// if this is the last message we defer the pluck until AFTER we start
|
||||
// the trailing md op. This prevents hangs. See
|
||||
// https://github.com/grpc/grpc/issues/11546
|
||||
if (options.is_last_message()) { |
||||
ctx_->has_pending_ops_ = true; |
||||
return true; |
||||
} |
||||
ctx_->has_pending_ops_ = false; |
||||
return call_->cq()->Pluck(&ctx_->pending_ops_); |
||||
} |
||||
|
||||
private: |
||||
::grpc::internal::Call* const call_; |
||||
::grpc_impl::ServerContext* const ctx_; |
||||
|
||||
template <class ServiceType, class RequestType, class ResponseType> |
||||
friend class ::grpc::internal::ServerStreamingHandler; |
||||
|
||||
ServerWriter(::grpc::internal::Call* call, ::grpc_impl::ServerContext* ctx) |
||||
: call_(call), ctx_(ctx) {} |
||||
}; |
||||
|
||||
/// Server-side interface for bi-directional streaming.
|
||||
template <class W, class R> |
||||
class ServerReaderWriterInterface : public internal::ServerStreamingInterface, |
||||
public internal::WriterInterface<W>, |
||||
public internal::ReaderInterface<R> {}; |
||||
|
||||
/// Actual implementation of bi-directional streaming
|
||||
namespace internal { |
||||
template <class W, class R> |
||||
class ServerReaderWriterBody final { |
||||
public: |
||||
ServerReaderWriterBody(grpc::internal::Call* call, |
||||
::grpc_impl::ServerContext* ctx) |
||||
: call_(call), ctx_(ctx) {} |
||||
|
||||
void SendInitialMetadata() { |
||||
GPR_CODEGEN_ASSERT(!ctx_->sent_initial_metadata_); |
||||
|
||||
grpc::internal::CallOpSet<grpc::internal::CallOpSendInitialMetadata> ops; |
||||
ops.SendInitialMetadata(&ctx_->initial_metadata_, |
||||
ctx_->initial_metadata_flags()); |
||||
if (ctx_->compression_level_set()) { |
||||
ops.set_compression_level(ctx_->compression_level()); |
||||
} |
||||
ctx_->sent_initial_metadata_ = true; |
||||
call_->PerformOps(&ops); |
||||
call_->cq()->Pluck(&ops); |
||||
} |
||||
|
||||
bool NextMessageSize(uint32_t* sz) { |
||||
*sz = call_->max_receive_message_size(); |
||||
return true; |
||||
} |
||||
|
||||
bool Read(R* msg) { |
||||
::grpc::internal::CallOpSet<::grpc::internal::CallOpRecvMessage<R>> ops; |
||||
ops.RecvMessage(msg); |
||||
call_->PerformOps(&ops); |
||||
return call_->cq()->Pluck(&ops) && ops.got_message; |
||||
} |
||||
|
||||
bool Write(const W& msg, ::grpc::WriteOptions options) { |
||||
if (options.is_last_message()) { |
||||
options.set_buffer_hint(); |
||||
} |
||||
if (!ctx_->pending_ops_.SendMessagePtr(&msg, options).ok()) { |
||||
return false; |
||||
} |
||||
if (!ctx_->sent_initial_metadata_) { |
||||
ctx_->pending_ops_.SendInitialMetadata(&ctx_->initial_metadata_, |
||||
ctx_->initial_metadata_flags()); |
||||
if (ctx_->compression_level_set()) { |
||||
ctx_->pending_ops_.set_compression_level(ctx_->compression_level()); |
||||
} |
||||
ctx_->sent_initial_metadata_ = true; |
||||
} |
||||
call_->PerformOps(&ctx_->pending_ops_); |
||||
// if this is the last message we defer the pluck until AFTER we start
|
||||
// the trailing md op. This prevents hangs. See
|
||||
// https://github.com/grpc/grpc/issues/11546
|
||||
if (options.is_last_message()) { |
||||
ctx_->has_pending_ops_ = true; |
||||
return true; |
||||
} |
||||
ctx_->has_pending_ops_ = false; |
||||
return call_->cq()->Pluck(&ctx_->pending_ops_); |
||||
} |
||||
|
||||
private: |
||||
grpc::internal::Call* const call_; |
||||
::grpc_impl::ServerContext* const ctx_; |
||||
}; |
||||
|
||||
} // namespace internal
|
||||
|
||||
/// Synchronous (blocking) server-side API for a bidirectional
|
||||
/// streaming call, where the incoming message stream coming from the client has
|
||||
/// messages of type \a R, and the outgoing message streaming coming from
|
||||
/// the server has messages of type \a W.
|
||||
template <class W, class R> |
||||
class ServerReaderWriter final : public ServerReaderWriterInterface<W, R> { |
||||
public: |
||||
/// See the \a ServerStreamingInterface.SendInitialMetadata method
|
||||
/// for semantics. Note that initial metadata will be affected by the
|
||||
/// \a ServerContext associated with this call.
|
||||
void SendInitialMetadata() override { body_.SendInitialMetadata(); } |
||||
|
||||
bool NextMessageSize(uint32_t* sz) override { |
||||
return body_.NextMessageSize(sz); |
||||
} |
||||
|
||||
bool Read(R* msg) override { return body_.Read(msg); } |
||||
|
||||
/// See the \a WriterInterface.Write(const W& msg, WriteOptions options)
|
||||
/// method for semantics.
|
||||
/// Side effect:
|
||||
/// Also sends initial metadata if not already sent (using the \a
|
||||
/// ServerContext associated with this call).
|
||||
using internal::WriterInterface<W>::Write; |
||||
bool Write(const W& msg, ::grpc::WriteOptions options) override { |
||||
return body_.Write(msg, options); |
||||
} |
||||
|
||||
private: |
||||
internal::ServerReaderWriterBody<W, R> body_; |
||||
|
||||
friend class ::grpc::internal::TemplatedBidiStreamingHandler< |
||||
ServerReaderWriter<W, R>, false>; |
||||
ServerReaderWriter(::grpc::internal::Call* call, |
||||
::grpc_impl::ServerContext* ctx) |
||||
: body_(call, ctx) {} |
||||
}; |
||||
|
||||
/// A class to represent a flow-controlled unary call. This is something
|
||||
/// of a hybrid between conventional unary and streaming. This is invoked
|
||||
/// through a unary call on the client side, but the server responds to it
|
||||
/// as though it were a single-ping-pong streaming call. The server can use
|
||||
/// the \a NextMessageSize method to determine an upper-bound on the size of
|
||||
/// the message. A key difference relative to streaming: ServerUnaryStreamer
|
||||
/// must have exactly 1 Read and exactly 1 Write, in that order, to function
|
||||
/// correctly. Otherwise, the RPC is in error.
|
||||
template <class RequestType, class ResponseType> |
||||
class ServerUnaryStreamer final |
||||
: public ServerReaderWriterInterface<ResponseType, RequestType> { |
||||
public: |
||||
/// Block to send initial metadata to client.
|
||||
/// Implicit input parameter:
|
||||
/// - the \a ServerContext associated with this call will be used for
|
||||
/// sending initial metadata.
|
||||
void SendInitialMetadata() override { body_.SendInitialMetadata(); } |
||||
|
||||
/// Get an upper bound on the request message size from the client.
|
||||
bool NextMessageSize(uint32_t* sz) override { |
||||
return body_.NextMessageSize(sz); |
||||
} |
||||
|
||||
/// Read a message of type \a R into \a msg. Completion will be notified by \a
|
||||
/// tag on the associated completion queue.
|
||||
/// This is thread-safe with respect to \a Write or \a WritesDone methods. It
|
||||
/// should not be called concurrently with other streaming APIs
|
||||
/// on the same stream. It is not meaningful to call it concurrently
|
||||
/// with another \a ReaderInterface::Read on the same stream since reads on
|
||||
/// the same stream are delivered in order.
|
||||
///
|
||||
/// \param[out] msg Where to eventually store the read message.
|
||||
/// \param[in] tag The tag identifying the operation.
|
||||
bool Read(RequestType* request) override { |
||||
if (read_done_) { |
||||
return false; |
||||
} |
||||
read_done_ = true; |
||||
return body_.Read(request); |
||||
} |
||||
|
||||
/// Block to write \a msg to the stream with WriteOptions \a options.
|
||||
/// This is thread-safe with respect to \a ReaderInterface::Read
|
||||
///
|
||||
/// \param msg The message to be written to the stream.
|
||||
/// \param options The WriteOptions affecting the write operation.
|
||||
///
|
||||
/// \return \a true on success, \a false when the stream has been closed.
|
||||
using internal::WriterInterface<ResponseType>::Write; |
||||
bool Write(const ResponseType& response, |
||||
::grpc::WriteOptions options) override { |
||||
if (write_done_ || !read_done_) { |
||||
return false; |
||||
} |
||||
write_done_ = true; |
||||
return body_.Write(response, options); |
||||
} |
||||
|
||||
private: |
||||
internal::ServerReaderWriterBody<ResponseType, RequestType> body_; |
||||
bool read_done_; |
||||
bool write_done_; |
||||
|
||||
friend class ::grpc::internal::TemplatedBidiStreamingHandler< |
||||
ServerUnaryStreamer<RequestType, ResponseType>, true>; |
||||
ServerUnaryStreamer(::grpc::internal::Call* call, |
||||
::grpc_impl::ServerContext* ctx) |
||||
: body_(call, ctx), read_done_(false), write_done_(false) {} |
||||
}; |
||||
|
||||
/// A class to represent a flow-controlled server-side streaming call.
|
||||
/// This is something of a hybrid between server-side and bidi streaming.
|
||||
/// This is invoked through a server-side streaming call on the client side,
|
||||
/// but the server responds to it as though it were a bidi streaming call that
|
||||
/// must first have exactly 1 Read and then any number of Writes.
|
||||
template <class RequestType, class ResponseType> |
||||
class ServerSplitStreamer final |
||||
: public ServerReaderWriterInterface<ResponseType, RequestType> { |
||||
public: |
||||
/// Block to send initial metadata to client.
|
||||
/// Implicit input parameter:
|
||||
/// - the \a ServerContext associated with this call will be used for
|
||||
/// sending initial metadata.
|
||||
void SendInitialMetadata() override { body_.SendInitialMetadata(); } |
||||
|
||||
/// Get an upper bound on the request message size from the client.
|
||||
bool NextMessageSize(uint32_t* sz) override { |
||||
return body_.NextMessageSize(sz); |
||||
} |
||||
|
||||
/// Read a message of type \a R into \a msg. Completion will be notified by \a
|
||||
/// tag on the associated completion queue.
|
||||
/// This is thread-safe with respect to \a Write or \a WritesDone methods. It
|
||||
/// should not be called concurrently with other streaming APIs
|
||||
/// on the same stream. It is not meaningful to call it concurrently
|
||||
/// with another \a ReaderInterface::Read on the same stream since reads on
|
||||
/// the same stream are delivered in order.
|
||||
///
|
||||
/// \param[out] msg Where to eventually store the read message.
|
||||
/// \param[in] tag The tag identifying the operation.
|
||||
bool Read(RequestType* request) override { |
||||
if (read_done_) { |
||||
return false; |
||||
} |
||||
read_done_ = true; |
||||
return body_.Read(request); |
||||
} |
||||
|
||||
/// Block to write \a msg to the stream with WriteOptions \a options.
|
||||
/// This is thread-safe with respect to \a ReaderInterface::Read
|
||||
///
|
||||
/// \param msg The message to be written to the stream.
|
||||
/// \param options The WriteOptions affecting the write operation.
|
||||
///
|
||||
/// \return \a true on success, \a false when the stream has been closed.
|
||||
using internal::WriterInterface<ResponseType>::Write; |
||||
bool Write(const ResponseType& response, |
||||
::grpc::WriteOptions options) override { |
||||
return read_done_ && body_.Write(response, options); |
||||
} |
||||
|
||||
private: |
||||
internal::ServerReaderWriterBody<ResponseType, RequestType> body_; |
||||
bool read_done_; |
||||
|
||||
friend class ::grpc::internal::TemplatedBidiStreamingHandler< |
||||
ServerSplitStreamer<RequestType, ResponseType>, false>; |
||||
ServerSplitStreamer(::grpc::internal::Call* call, |
||||
::grpc_impl::ServerContext* ctx) |
||||
: body_(call, ctx), read_done_(false) {} |
||||
}; |
||||
|
||||
} // namespace grpc_impl
|
||||
|
||||
#endif // GRPCPP_IMPL_CODEGEN_SYNC_STREAM_IMPL_H
|
||||
@ -0,0 +1,24 @@ |
||||
/*
|
||||
* |
||||
* Copyright 2019 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 GRPCPP_SUPPORT_ASYNC_STREAM_IMPL_H |
||||
#define GRPCPP_SUPPORT_ASYNC_STREAM_IMPL_H |
||||
|
||||
#include <grpcpp/impl/codegen/async_stream_impl.h> |
||||
|
||||
#endif // GRPCPP_SUPPORT_ASYNC_STREAM_IMPL_H
|
||||
@ -0,0 +1,24 @@ |
||||
/*
|
||||
* |
||||
* Copyright 2019 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 GRPCPP_SUPPORT_ASYNC_UNARY_CALL_IMPL_H |
||||
#define GRPCPP_SUPPORT_ASYNC_UNARY_CALL_IMPL_H |
||||
|
||||
#include <grpcpp/impl/codegen/async_unary_call_impl.h> |
||||
|
||||
#endif // GRPCPP_SUPPORT_ASYNC_UNARY_CALL_IMPL_H
|
||||
@ -0,0 +1,24 @@ |
||||
/*
|
||||
* |
||||
* Copyright 2019 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 GRPCPP_SUPPORT_CLIENT_CALLBACK_IMPL_H |
||||
#define GRPCPP_SUPPORT_CLIENT_CALLBACK_IMPL_H |
||||
|
||||
#include <grpcpp/impl/codegen/client_callback_impl.h> |
||||
|
||||
#endif // GRPCPP_SUPPORT_CLIENT_CALLBACK_IMPL_H
|
||||
@ -0,0 +1,24 @@ |
||||
/*
|
||||
* |
||||
* Copyright 2019 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 GRPCPP_SUPPORT_SERVER_CALLBACK_IMPL_H |
||||
#define GRPCPP_SUPPORT_SERVER_CALLBACK_IMPL_H |
||||
|
||||
#include <grpcpp/impl/codegen/server_callback_impl.h> |
||||
|
||||
#endif // GRPCPP_SUPPORT_SERVER_CALLBACK_IMPL_H
|
||||
@ -0,0 +1,24 @@ |
||||
/*
|
||||
* |
||||
* Copyright 2019 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 GRPCPP_SUPPORT_SYNC_STREAM_IMPL_H |
||||
#define GRPCPP_SUPPORT_SYNC_STREAM_IMPL_H |
||||
|
||||
#include <grpcpp/impl/codegen/sync_stream_impl.h> |
||||
|
||||
#endif // GRPCPP_SUPPORT_SYNC_STREAM_IMPL_H
|
||||
@ -0,0 +1,54 @@ |
||||
#region Copyright notice and license |
||||
// Copyright 2019 The 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. |
||||
#endregion |
||||
|
||||
using System; |
||||
using System.Runtime.CompilerServices; |
||||
using System.Text; |
||||
|
||||
namespace Grpc.Core.Api.Utils |
||||
{ |
||||
|
||||
internal static class EncodingExtensions |
||||
{ |
||||
#if NET45 // back-fill over a method missing in NET45 |
||||
/// <summary> |
||||
/// Converts <c>byte*</c> pointing to an encoded byte array to a <c>string</c> using the provided <c>Encoding</c>. |
||||
/// </summary> |
||||
public static unsafe string GetString(this Encoding encoding, byte* source, int byteCount) |
||||
{ |
||||
if (byteCount == 0) return ""; // most callers will have already checked, but: make sure |
||||
|
||||
// allocate a right-sized string and decode into it |
||||
int charCount = encoding.GetCharCount(source, byteCount); |
||||
string s = new string('\0', charCount); |
||||
fixed (char* cPtr = s) |
||||
{ |
||||
encoding.GetChars(source, byteCount, cPtr, charCount); |
||||
} |
||||
return s; |
||||
} |
||||
#endif |
||||
/// <summary> |
||||
/// Converts <c>IntPtr</c> pointing to a encoded byte array to a <c>string</c> using the provided <c>Encoding</c>. |
||||
/// </summary> |
||||
[MethodImpl(MethodImplOptions.AggressiveInlining)] |
||||
public static unsafe string GetString(this Encoding encoding, IntPtr ptr, int len) |
||||
{ |
||||
return len == 0 ? "" : encoding.GetString((byte*)ptr.ToPointer(), len); |
||||
} |
||||
} |
||||
|
||||
} |
||||
@ -0,0 +1,62 @@ |
||||
#region Copyright notice and license |
||||
// Copyright 2019 The 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. |
||||
#endregion |
||||
|
||||
using System.Text; |
||||
using Grpc.Core.Internal; |
||||
using NUnit.Framework; |
||||
|
||||
namespace Grpc.Core.Internal.Tests |
||||
{ |
||||
public class WellKnownStringsTest |
||||
{ |
||||
[Test] |
||||
[TestCase("", true)] |
||||
[TestCase("u", false)] |
||||
[TestCase("us", false)] |
||||
[TestCase("use", false)] |
||||
[TestCase("user", false)] |
||||
[TestCase("user-", false)] |
||||
[TestCase("user-a", false)] |
||||
[TestCase("user-ag", false)] |
||||
[TestCase("user-age", false)] |
||||
[TestCase("user-agent", true)] |
||||
[TestCase("user-agent ", false)] |
||||
[TestCase("useragent ", false)] |
||||
[TestCase("User-Agent", false)] |
||||
[TestCase("sdlkfjlskjfdlkjs;lfdksflsdfkh skjdfh sdkfhskdhf skjfhk sdhjkjh", false)] |
||||
|
||||
// test for endianness snafus (reversed in segments) |
||||
[TestCase("ega-resutn", false)] |
||||
public unsafe void TestWellKnownStrings(string input, bool expected) |
||||
{ |
||||
// create a copy of the data; no cheating! |
||||
byte[] bytes = Encoding.ASCII.GetBytes(input); |
||||
fixed(byte* ptr = bytes) |
||||
{ |
||||
string result = WellKnownStrings.TryIdentify(ptr, bytes.Length); |
||||
if (expected) Assert.AreEqual(input, result); |
||||
else Assert.IsNull(result); |
||||
|
||||
if (expected) |
||||
{ |
||||
// try again, and check we get the same instance |
||||
string again = WellKnownStrings.TryIdentify(ptr, bytes.Length); |
||||
Assert.AreSame(result, again); |
||||
} |
||||
} |
||||
} |
||||
} |
||||
} |
||||
@ -0,0 +1,92 @@ |
||||
#region Copyright notice and license |
||||
// Copyright 2019 The 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. |
||||
#endregion |
||||
|
||||
using System; |
||||
using System.Runtime.CompilerServices; |
||||
|
||||
namespace Grpc.Core.Internal |
||||
{ |
||||
/// <summary> |
||||
/// Utility type for identifying "well-known" strings (i.e. headers/keys etc that |
||||
/// we expect to see frequently, and don't want to allocate lots of copies of) |
||||
/// </summary> |
||||
internal static class WellKnownStrings |
||||
{ |
||||
[MethodImpl(MethodImplOptions.AggressiveInlining)] |
||||
private static unsafe ulong Coerce64(byte* value) |
||||
{ |
||||
return *(ulong*)value; |
||||
} |
||||
[MethodImpl(MethodImplOptions.AggressiveInlining)] |
||||
private static unsafe uint Coerce32(byte* value) |
||||
{ |
||||
return *(uint*)value; |
||||
} |
||||
[MethodImpl(MethodImplOptions.AggressiveInlining)] |
||||
private static unsafe ushort Coerce16(byte* value) |
||||
{ |
||||
return *(ushort*)value; |
||||
} |
||||
|
||||
|
||||
/// <summary> |
||||
/// Test whether the provided byte sequence is recognized as a well-known string; if |
||||
/// so, return a shared instance of that string; otherwise, return null |
||||
/// </summary> |
||||
[MethodImpl(MethodImplOptions.AggressiveInlining)] |
||||
public static unsafe string TryIdentify(IntPtr source, int length) |
||||
{ |
||||
return TryIdentify((byte*)source.ToPointer(), length); |
||||
} |
||||
|
||||
/// <summary> |
||||
/// Test whether the provided byte sequence is recognized as a well-known string; if |
||||
/// so, return a shared instance of that string; otherwise, return null |
||||
/// </summary> |
||||
public static unsafe string TryIdentify(byte* source, int length) |
||||
{ |
||||
// note: the logic here is hard-coded to constants for optimal processing; |
||||
// refer to an ASCII/hex converter (and remember to reverse **segments** for little-endian) |
||||
if (BitConverter.IsLittleEndian) // this is a JIT intrinsic; branch removal happens on modern runtimes |
||||
{ |
||||
switch (length) |
||||
{ |
||||
case 0: return ""; |
||||
case 10: |
||||
switch(Coerce64(source)) |
||||
{ |
||||
case 0x6567612d72657375: return Coerce16(source + 8) == 0x746e ? "user-agent" : null; |
||||
} |
||||
break; |
||||
} |
||||
} |
||||
else |
||||
{ |
||||
switch (length) |
||||
{ |
||||
case 0: return ""; |
||||
case 10: |
||||
switch (Coerce64(source)) |
||||
{ |
||||
case 0x757365722d616765: return Coerce16(source + 8) == 0x6e74 ? "user-agent" : null; |
||||
} |
||||
break; |
||||
} |
||||
} |
||||
return null; |
||||
} |
||||
} |
||||
} |
||||
Loading…
Reference in new issue