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-rw-r--r--include/grpc++/support/async_stream.h426
1 files changed, 1 insertions, 425 deletions
diff --git a/include/grpc++/support/async_stream.h b/include/grpc++/support/async_stream.h
index 0c96352ccd..88147ea9d6 100644
--- a/include/grpc++/support/async_stream.h
+++ b/include/grpc++/support/async_stream.h
@@ -34,430 +34,6 @@
#ifndef GRPCXX_SUPPORT_ASYNC_STREAM_H
#define GRPCXX_SUPPORT_ASYNC_STREAM_H
-#include <grpc/support/log.h>
-#include <grpc++/channel.h>
-#include <grpc++/client_context.h>
-#include <grpc++/completion_queue.h>
-#include <grpc++/impl/call.h>
-#include <grpc++/impl/service_type.h>
-#include <grpc++/server_context.h>
-#include <grpc++/support/status.h>
-
-namespace grpc {
-
-/// Common interface for all client side asynchronous streaming.
-class ClientAsyncStreamingInterface {
- public:
- virtual ~ClientAsyncStreamingInterface() {}
-
- /// Request notification of the reading of the initial metadata. Completion
- /// will be notified by \a tag on the associated completion queue.
- ///
- /// \param[in] tag Tag identifying this request.
- virtual void ReadInitialMetadata(void* tag) = 0;
-
- /// Request notification completion.
- ///
- /// \param[out] status To be updated with the operation status.
- /// \param[in] tag Tag identifying this request.
- virtual void Finish(Status* status, void* tag) = 0;
-};
-
-/// An interface that yields a sequence of messages of type \a R.
-template <class R>
-class AsyncReaderInterface {
- public:
- virtual ~AsyncReaderInterface() {}
-
- /// Read a message of type \a R into \a msg. Completion will be notified by \a
- /// tag on the associated completion queue.
- ///
- /// \param[out] msg Where to eventually store the read message.
- /// \param[in] tag The tag identifying the operation.
- virtual void Read(R* msg, void* tag) = 0;
-};
-
-/// An interface that can be fed a sequence of messages of type \a W.
-template <class W>
-class AsyncWriterInterface {
- public:
- virtual ~AsyncWriterInterface() {}
-
- /// Request the writing of \a msg with identifying tag \a tag.
- ///
- /// Only one write may be outstanding at any given time. This means that
- /// after calling Write, one must wait to receive \a tag from the completion
- /// queue BEFORE calling Write again.
- ///
- /// \param[in] msg The message to be written.
- /// \param[in] tag The tag identifying the operation.
- virtual void Write(const W& msg, void* tag) = 0;
-};
-
-template <class R>
-class ClientAsyncReaderInterface : public ClientAsyncStreamingInterface,
- public AsyncReaderInterface<R> {};
-
-template <class R>
-class ClientAsyncReader GRPC_FINAL : public ClientAsyncReaderInterface<R> {
- public:
- /// Create a stream and write the first request out.
- template <class W>
- ClientAsyncReader(Channel* channel, CompletionQueue* cq,
- const RpcMethod& method, ClientContext* context,
- const W& request, void* tag)
- : context_(context), call_(channel->CreateCall(method, context, cq)) {
- init_ops_.set_output_tag(tag);
- init_ops_.SendInitialMetadata(context->send_initial_metadata_);
- // TODO(ctiller): don't assert
- GPR_ASSERT(init_ops_.SendMessage(request).ok());
- init_ops_.ClientSendClose();
- call_.PerformOps(&init_ops_);
- }
-
- void ReadInitialMetadata(void* tag) GRPC_OVERRIDE {
- GPR_ASSERT(!context_->initial_metadata_received_);
-
- meta_ops_.set_output_tag(tag);
- meta_ops_.RecvInitialMetadata(context_);
- call_.PerformOps(&meta_ops_);
- }
-
- void Read(R* msg, void* tag) GRPC_OVERRIDE {
- read_ops_.set_output_tag(tag);
- if (!context_->initial_metadata_received_) {
- read_ops_.RecvInitialMetadata(context_);
- }
- read_ops_.RecvMessage(msg);
- call_.PerformOps(&read_ops_);
- }
-
- void Finish(Status* status, void* tag) GRPC_OVERRIDE {
- finish_ops_.set_output_tag(tag);
- if (!context_->initial_metadata_received_) {
- finish_ops_.RecvInitialMetadata(context_);
- }
- finish_ops_.ClientRecvStatus(context_, status);
- call_.PerformOps(&finish_ops_);
- }
-
- private:
- ClientContext* context_;
- Call call_;
- CallOpSet<CallOpSendInitialMetadata, CallOpSendMessage, CallOpClientSendClose>
- init_ops_;
- CallOpSet<CallOpRecvInitialMetadata> meta_ops_;
- CallOpSet<CallOpRecvInitialMetadata, CallOpRecvMessage<R>> read_ops_;
- CallOpSet<CallOpRecvInitialMetadata, CallOpClientRecvStatus> finish_ops_;
-};
-
-/// Common interface for client side asynchronous writing.
-template <class W>
-class ClientAsyncWriterInterface : public ClientAsyncStreamingInterface,
- public AsyncWriterInterface<W> {
- public:
- /// Signal the client is done with the writes.
- ///
- /// \param[in] tag The tag identifying the operation.
- virtual void WritesDone(void* tag) = 0;
-};
-
-template <class W>
-class ClientAsyncWriter GRPC_FINAL : public ClientAsyncWriterInterface<W> {
- public:
- template <class R>
- ClientAsyncWriter(Channel* channel, CompletionQueue* cq,
- const RpcMethod& method, ClientContext* context,
- R* response, void* tag)
- : context_(context), call_(channel->CreateCall(method, context, cq)) {
- finish_ops_.RecvMessage(response);
-
- init_ops_.set_output_tag(tag);
- init_ops_.SendInitialMetadata(context->send_initial_metadata_);
- call_.PerformOps(&init_ops_);
- }
-
- void ReadInitialMetadata(void* tag) GRPC_OVERRIDE {
- GPR_ASSERT(!context_->initial_metadata_received_);
-
- meta_ops_.set_output_tag(tag);
- meta_ops_.RecvInitialMetadata(context_);
- call_.PerformOps(&meta_ops_);
- }
-
- void Write(const W& msg, void* tag) GRPC_OVERRIDE {
- write_ops_.set_output_tag(tag);
- // TODO(ctiller): don't assert
- GPR_ASSERT(write_ops_.SendMessage(msg).ok());
- call_.PerformOps(&write_ops_);
- }
-
- void WritesDone(void* tag) GRPC_OVERRIDE {
- writes_done_ops_.set_output_tag(tag);
- writes_done_ops_.ClientSendClose();
- call_.PerformOps(&writes_done_ops_);
- }
-
- void Finish(Status* status, void* tag) GRPC_OVERRIDE {
- finish_ops_.set_output_tag(tag);
- if (!context_->initial_metadata_received_) {
- finish_ops_.RecvInitialMetadata(context_);
- }
- finish_ops_.ClientRecvStatus(context_, status);
- call_.PerformOps(&finish_ops_);
- }
-
- private:
- ClientContext* context_;
- Call call_;
- CallOpSet<CallOpSendInitialMetadata> init_ops_;
- CallOpSet<CallOpRecvInitialMetadata> meta_ops_;
- CallOpSet<CallOpSendMessage> write_ops_;
- CallOpSet<CallOpClientSendClose> writes_done_ops_;
- CallOpSet<CallOpRecvInitialMetadata, CallOpGenericRecvMessage,
- CallOpClientRecvStatus> finish_ops_;
-};
-
-/// Client-side interface for asynchronous bi-directional streaming.
-template <class W, class R>
-class ClientAsyncReaderWriterInterface : public ClientAsyncStreamingInterface,
- public AsyncWriterInterface<W>,
- public AsyncReaderInterface<R> {
- public:
- /// Signal the client is done with the writes.
- ///
- /// \param[in] tag The tag identifying the operation.
- virtual void WritesDone(void* tag) = 0;
-};
-
-template <class W, class R>
-class ClientAsyncReaderWriter GRPC_FINAL
- : public ClientAsyncReaderWriterInterface<W, R> {
- public:
- ClientAsyncReaderWriter(Channel* channel, CompletionQueue* cq,
- const RpcMethod& method, ClientContext* context,
- void* tag)
- : context_(context), call_(channel->CreateCall(method, context, cq)) {
- init_ops_.set_output_tag(tag);
- init_ops_.SendInitialMetadata(context->send_initial_metadata_);
- call_.PerformOps(&init_ops_);
- }
-
- void ReadInitialMetadata(void* tag) GRPC_OVERRIDE {
- GPR_ASSERT(!context_->initial_metadata_received_);
-
- meta_ops_.set_output_tag(tag);
- meta_ops_.RecvInitialMetadata(context_);
- call_.PerformOps(&meta_ops_);
- }
-
- void Read(R* msg, void* tag) GRPC_OVERRIDE {
- read_ops_.set_output_tag(tag);
- if (!context_->initial_metadata_received_) {
- read_ops_.RecvInitialMetadata(context_);
- }
- read_ops_.RecvMessage(msg);
- call_.PerformOps(&read_ops_);
- }
-
- void Write(const W& msg, void* tag) GRPC_OVERRIDE {
- write_ops_.set_output_tag(tag);
- // TODO(ctiller): don't assert
- GPR_ASSERT(write_ops_.SendMessage(msg).ok());
- call_.PerformOps(&write_ops_);
- }
-
- void WritesDone(void* tag) GRPC_OVERRIDE {
- writes_done_ops_.set_output_tag(tag);
- writes_done_ops_.ClientSendClose();
- call_.PerformOps(&writes_done_ops_);
- }
-
- void Finish(Status* status, void* tag) GRPC_OVERRIDE {
- finish_ops_.set_output_tag(tag);
- if (!context_->initial_metadata_received_) {
- finish_ops_.RecvInitialMetadata(context_);
- }
- finish_ops_.ClientRecvStatus(context_, status);
- call_.PerformOps(&finish_ops_);
- }
-
- private:
- ClientContext* context_;
- Call call_;
- CallOpSet<CallOpSendInitialMetadata> init_ops_;
- CallOpSet<CallOpRecvInitialMetadata> meta_ops_;
- CallOpSet<CallOpRecvInitialMetadata, CallOpRecvMessage<R>> read_ops_;
- CallOpSet<CallOpSendMessage> write_ops_;
- CallOpSet<CallOpClientSendClose> writes_done_ops_;
- CallOpSet<CallOpRecvInitialMetadata, CallOpClientRecvStatus> finish_ops_;
-};
-
-template <class W, class R>
-class ServerAsyncReader GRPC_FINAL : public ServerAsyncStreamingInterface,
- public AsyncReaderInterface<R> {
- public:
- explicit ServerAsyncReader(ServerContext* ctx)
- : call_(nullptr, nullptr, nullptr), ctx_(ctx) {}
-
- void SendInitialMetadata(void* tag) GRPC_OVERRIDE {
- GPR_ASSERT(!ctx_->sent_initial_metadata_);
-
- meta_ops_.set_output_tag(tag);
- meta_ops_.SendInitialMetadata(ctx_->initial_metadata_);
- ctx_->sent_initial_metadata_ = true;
- call_.PerformOps(&meta_ops_);
- }
-
- void Read(R* msg, void* tag) GRPC_OVERRIDE {
- read_ops_.set_output_tag(tag);
- read_ops_.RecvMessage(msg);
- call_.PerformOps(&read_ops_);
- }
-
- void Finish(const W& msg, const Status& status, void* tag) {
- finish_ops_.set_output_tag(tag);
- if (!ctx_->sent_initial_metadata_) {
- finish_ops_.SendInitialMetadata(ctx_->initial_metadata_);
- ctx_->sent_initial_metadata_ = true;
- }
- // The response is dropped if the status is not OK.
- if (status.ok()) {
- finish_ops_.ServerSendStatus(ctx_->trailing_metadata_,
- finish_ops_.SendMessage(msg));
- } else {
- finish_ops_.ServerSendStatus(ctx_->trailing_metadata_, status);
- }
- call_.PerformOps(&finish_ops_);
- }
-
- void FinishWithError(const Status& status, void* tag) {
- GPR_ASSERT(!status.ok());
- finish_ops_.set_output_tag(tag);
- if (!ctx_->sent_initial_metadata_) {
- finish_ops_.SendInitialMetadata(ctx_->initial_metadata_);
- ctx_->sent_initial_metadata_ = true;
- }
- finish_ops_.ServerSendStatus(ctx_->trailing_metadata_, status);
- call_.PerformOps(&finish_ops_);
- }
-
- private:
- void BindCall(Call* call) GRPC_OVERRIDE { call_ = *call; }
-
- Call call_;
- ServerContext* ctx_;
- CallOpSet<CallOpSendInitialMetadata> meta_ops_;
- CallOpSet<CallOpRecvMessage<R>> read_ops_;
- CallOpSet<CallOpSendInitialMetadata, CallOpSendMessage,
- CallOpServerSendStatus> finish_ops_;
-};
-
-template <class W>
-class ServerAsyncWriter GRPC_FINAL : public ServerAsyncStreamingInterface,
- public AsyncWriterInterface<W> {
- public:
- explicit ServerAsyncWriter(ServerContext* ctx)
- : call_(nullptr, nullptr, nullptr), ctx_(ctx) {}
-
- void SendInitialMetadata(void* tag) GRPC_OVERRIDE {
- GPR_ASSERT(!ctx_->sent_initial_metadata_);
-
- meta_ops_.set_output_tag(tag);
- meta_ops_.SendInitialMetadata(ctx_->initial_metadata_);
- ctx_->sent_initial_metadata_ = true;
- call_.PerformOps(&meta_ops_);
- }
-
- void Write(const W& msg, void* tag) GRPC_OVERRIDE {
- write_ops_.set_output_tag(tag);
- if (!ctx_->sent_initial_metadata_) {
- write_ops_.SendInitialMetadata(ctx_->initial_metadata_);
- ctx_->sent_initial_metadata_ = true;
- }
- // TODO(ctiller): don't assert
- GPR_ASSERT(write_ops_.SendMessage(msg).ok());
- call_.PerformOps(&write_ops_);
- }
-
- void Finish(const Status& status, void* tag) {
- finish_ops_.set_output_tag(tag);
- if (!ctx_->sent_initial_metadata_) {
- finish_ops_.SendInitialMetadata(ctx_->initial_metadata_);
- ctx_->sent_initial_metadata_ = true;
- }
- finish_ops_.ServerSendStatus(ctx_->trailing_metadata_, status);
- call_.PerformOps(&finish_ops_);
- }
-
- private:
- void BindCall(Call* call) GRPC_OVERRIDE { call_ = *call; }
-
- Call call_;
- ServerContext* ctx_;
- CallOpSet<CallOpSendInitialMetadata> meta_ops_;
- CallOpSet<CallOpSendInitialMetadata, CallOpSendMessage> write_ops_;
- CallOpSet<CallOpSendInitialMetadata, CallOpServerSendStatus> finish_ops_;
-};
-
-/// Server-side interface for asynchronous bi-directional streaming.
-template <class W, class R>
-class ServerAsyncReaderWriter GRPC_FINAL : public ServerAsyncStreamingInterface,
- public AsyncWriterInterface<W>,
- public AsyncReaderInterface<R> {
- public:
- explicit ServerAsyncReaderWriter(ServerContext* ctx)
- : call_(nullptr, nullptr, nullptr), ctx_(ctx) {}
-
- void SendInitialMetadata(void* tag) GRPC_OVERRIDE {
- GPR_ASSERT(!ctx_->sent_initial_metadata_);
-
- meta_ops_.set_output_tag(tag);
- meta_ops_.SendInitialMetadata(ctx_->initial_metadata_);
- ctx_->sent_initial_metadata_ = true;
- call_.PerformOps(&meta_ops_);
- }
-
- void Read(R* msg, void* tag) GRPC_OVERRIDE {
- read_ops_.set_output_tag(tag);
- read_ops_.RecvMessage(msg);
- call_.PerformOps(&read_ops_);
- }
-
- void Write(const W& msg, void* tag) GRPC_OVERRIDE {
- write_ops_.set_output_tag(tag);
- if (!ctx_->sent_initial_metadata_) {
- write_ops_.SendInitialMetadata(ctx_->initial_metadata_);
- ctx_->sent_initial_metadata_ = true;
- }
- // TODO(ctiller): don't assert
- GPR_ASSERT(write_ops_.SendMessage(msg).ok());
- call_.PerformOps(&write_ops_);
- }
-
- void Finish(const Status& status, void* tag) {
- finish_ops_.set_output_tag(tag);
- if (!ctx_->sent_initial_metadata_) {
- finish_ops_.SendInitialMetadata(ctx_->initial_metadata_);
- ctx_->sent_initial_metadata_ = true;
- }
- finish_ops_.ServerSendStatus(ctx_->trailing_metadata_, status);
- call_.PerformOps(&finish_ops_);
- }
-
- private:
- friend class ::grpc::Server;
-
- void BindCall(Call* call) GRPC_OVERRIDE { call_ = *call; }
-
- Call call_;
- ServerContext* ctx_;
- CallOpSet<CallOpSendInitialMetadata> meta_ops_;
- CallOpSet<CallOpRecvMessage<R>> read_ops_;
- CallOpSet<CallOpSendInitialMetadata, CallOpSendMessage> write_ops_;
- CallOpSet<CallOpSendInitialMetadata, CallOpServerSendStatus> finish_ops_;
-};
-
-} // namespace grpc
+#include <grpc++/impl/codegen/async_stream.h>
#endif // GRPCXX_SUPPORT_ASYNC_STREAM_H