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16 Commits
7f535a6b2b
...
7570d8b545
| Author | SHA1 | Date |
|---|---|---|
Mark D. Roth
|
7570d8b545 | 3 days ago |
Craig Tiller
|
394118d04d | 3 days ago |
Yash Tibrewal
|
c333d60fcd | 4 days ago |
|
Mark D. Roth
|
a5703a0693 | 4 days ago |
Tanvi Jagtap
|
67d82ecbb9 | 4 days ago |
Sourabh Singh
|
bef33bd26e | 4 days ago |
AJ Heller
|
9801f6dae2 | 4 days ago |
Vignesh Babu
|
bcc04e7dbd | 5 days ago |
Esun Kim
|
cb9375468b | 5 days ago |
|
Craig Tiller
|
4eb73bc81e | 5 days ago |
|
Craig Tiller
|
d61d88d130 | 5 days ago |
|
Craig Tiller
|
14e077f9bd | 6 days ago |
|
Esun Kim
|
a55c0665ea | 6 days ago |
Purnesh Dixit
|
45dacbe861 | 7 days ago |
|
Craig Tiller
|
3cc611c7df | 7 days ago |
|
Craig Tiller
|
6c37069951 | 7 days ago |
319 changed files with 3311 additions and 918 deletions
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@ -0,0 +1,68 @@ |
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// Copyright 2024 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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#include "src/core/ext/transport/chaotic_good/control_endpoint.h" |
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|
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#include "src/core/lib/event_engine/event_engine_context.h" |
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#include "src/core/lib/event_engine/tcp_socket_utils.h" |
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#include "src/core/lib/promise/loop.h" |
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#include "src/core/lib/promise/try_seq.h" |
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|
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namespace grpc_core { |
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namespace chaotic_good { |
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|
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auto ControlEndpoint::Buffer::Pull() { |
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return [this]() -> Poll<SliceBuffer> { |
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Waker waker; |
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auto cleanup = absl::MakeCleanup([&waker]() { waker.Wakeup(); }); |
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MutexLock lock(&mu_); |
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if (queued_output_.Length() == 0) { |
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flush_waker_ = GetContext<Activity>()->MakeNonOwningWaker(); |
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return Pending{}; |
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} |
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waker = std::move(write_waker_); |
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return std::move(queued_output_); |
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}; |
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} |
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|
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ControlEndpoint::ControlEndpoint( |
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PromiseEndpoint endpoint, |
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grpc_event_engine::experimental::EventEngine* event_engine) |
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: endpoint_(std::make_shared<PromiseEndpoint>(std::move(endpoint))) { |
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CHECK(event_engine != nullptr); |
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write_party_->arena()->SetContext(event_engine); |
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write_party_->Spawn( |
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"flush-control", |
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GRPC_LATENT_SEE_PROMISE( |
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"FlushLoop", Loop([endpoint = endpoint_, buffer = buffer_]() { |
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return TrySeq( |
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// Pull one set of buffered writes
|
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buffer->Pull(), |
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// And write them
|
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[endpoint, buffer = buffer.get()](SliceBuffer flushing) { |
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GRPC_TRACE_LOG(chaotic_good, INFO) |
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<< "CHAOTIC_GOOD: Flush " << flushing.Length() |
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<< " bytes from " << buffer << " to " |
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<< ResolvedAddressToString(endpoint->GetPeerAddress()) |
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.value_or("<<unknown peer address>>"); |
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return endpoint->Write(std::move(flushing)); |
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}, |
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// Then repeat
|
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[]() -> LoopCtl<absl::Status> { return Continue{}; }); |
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})), |
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[](absl::Status) {}); |
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} |
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|
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} // namespace chaotic_good
|
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} // namespace grpc_core
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@ -0,0 +1,99 @@ |
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// Copyright 2024 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
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
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//
|
||||
// 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
|
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// limitations under the License.
|
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|
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#ifndef GRPC_SRC_CORE_EXT_TRANSPORT_CHAOTIC_GOOD_CONTROL_ENDPOINT_H |
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#define GRPC_SRC_CORE_EXT_TRANSPORT_CHAOTIC_GOOD_CONTROL_ENDPOINT_H |
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|
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#include "absl/cleanup/cleanup.h" |
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#include "src/core/lib/promise/party.h" |
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#include "src/core/lib/transport/promise_endpoint.h" |
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#include "src/core/util/sync.h" |
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|
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namespace grpc_core { |
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namespace chaotic_good { |
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|
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// Wrapper around PromiseEndpoint.
|
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// Buffers all of the small writes that get enqueued to this endpoint, and then
|
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// uses a separate party to flush them to the wire.
|
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// In doing so we get to batch up effectively all the writes from the transport
|
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// (since party wakeups are sticky), and then flush all the writes in one go.
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class ControlEndpoint { |
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private: |
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class Buffer : public RefCounted<Buffer> { |
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public: |
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// Queue some buffer to be written.
|
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// We cap the queue size so that we don't infinitely buffer on one
|
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// connection - if the cap is hit, this queue operation will not resolve
|
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// until it empties.
|
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// Returns a promise that resolves to Empty{} when the data has been queued.
|
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auto Queue(SliceBuffer&& buffer) { |
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return [buffer = std::move(buffer), this]() mutable -> Poll<Empty> { |
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Waker waker; |
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auto cleanup = absl::MakeCleanup([&waker]() { waker.Wakeup(); }); |
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MutexLock lock(&mu_); |
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if (queued_output_.Length() != 0 && |
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queued_output_.Length() + buffer.Length() > MaxQueued()) { |
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GRPC_TRACE_LOG(chaotic_good, INFO) |
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<< "CHAOTIC_GOOD: Delay control write" |
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<< " write_length=" << buffer.Length() |
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<< " already_buffered=" << queued_output_.Length() |
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<< " queue=" << this; |
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write_waker_ = GetContext<Activity>()->MakeNonOwningWaker(); |
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return Pending{}; |
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} |
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GRPC_TRACE_LOG(chaotic_good, INFO) |
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<< "CHAOTIC_GOOD: Queue control write " << buffer.Length() |
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<< " bytes on " << this; |
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waker = std::move(flush_waker_); |
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queued_output_.Append(buffer); |
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return Empty{}; |
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}; |
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} |
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|
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auto Pull(); |
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|
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private: |
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size_t MaxQueued() const { return 1024 * 1024; } |
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|
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Mutex mu_; |
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Waker write_waker_ ABSL_GUARDED_BY(mu_); |
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Waker flush_waker_ ABSL_GUARDED_BY(mu_); |
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SliceBuffer queued_output_ ABSL_GUARDED_BY(mu_); |
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}; |
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|
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public: |
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ControlEndpoint(PromiseEndpoint endpoint, |
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grpc_event_engine::experimental::EventEngine* event_engine); |
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|
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// Write some data to the control endpoint; returns a promise that resolves
|
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// to Empty{} -- it's not possible to see errors from this api.
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auto Write(SliceBuffer&& bytes) { return buffer_->Queue(std::move(bytes)); } |
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|
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// Read operations are simply passthroughs to the underlying promise endpoint.
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auto ReadSlice(size_t length) { return endpoint_->ReadSlice(length); } |
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auto Read(size_t length) { return endpoint_->Read(length); } |
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auto GetPeerAddress() const { return endpoint_->GetPeerAddress(); } |
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auto GetLocalAddress() const { return endpoint_->GetLocalAddress(); } |
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|
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private: |
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std::shared_ptr<PromiseEndpoint> endpoint_; |
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RefCountedPtr<Party> write_party_ = |
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Party::Make(SimpleArenaAllocator(0)->MakeArena()); |
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RefCountedPtr<Buffer> buffer_ = MakeRefCounted<Buffer>(); |
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}; |
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|
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} // namespace chaotic_good
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} // namespace grpc_core
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|
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#endif // GRPC_SRC_CORE_EXT_TRANSPORT_CHAOTIC_GOOD_CONTROL_ENDPOINT_H
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@ -0,0 +1,236 @@ |
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// Copyright 2024 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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#include "src/core/ext/transport/chaotic_good/data_endpoints.h" |
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|
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#include <cstddef> |
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|
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#include "absl/cleanup/cleanup.h" |
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#include "absl/strings/escaping.h" |
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#include "src/core/lib/event_engine/event_engine_context.h" |
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#include "src/core/lib/promise/loop.h" |
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#include "src/core/lib/promise/seq.h" |
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#include "src/core/lib/promise/try_seq.h" |
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|
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namespace grpc_core { |
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namespace chaotic_good { |
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|
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namespace data_endpoints_detail { |
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|
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///////////////////////////////////////////////////////////////////////////////
|
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// OutputBuffer
|
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|
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bool OutputBuffer::Accept(SliceBuffer& buffer) { |
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if (pending_.Length() != 0 && |
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pending_.Length() + buffer.Length() > pending_max_) { |
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return false; |
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} |
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pending_.Append(buffer); |
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return true; |
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} |
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|
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///////////////////////////////////////////////////////////////////////////////
|
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// OutputBuffers
|
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|
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OutputBuffers::OutputBuffers(uint32_t num_connections) |
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: buffers_(num_connections) {} |
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|
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Poll<uint32_t> OutputBuffers::PollWrite(SliceBuffer& output_buffer) { |
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Waker waker; |
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auto cleanup = absl::MakeCleanup([&waker]() { waker.Wakeup(); }); |
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const auto length = output_buffer.Length(); |
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MutexLock lock(&mu_); |
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for (size_t i = 0; i < buffers_.size(); ++i) { |
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if (buffers_[i].Accept(output_buffer)) { |
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GRPC_TRACE_LOG(chaotic_good, INFO) |
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<< "CHAOTIC_GOOD: Queue " << length << " data onto endpoint " << i |
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<< " queue " << this; |
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waker = buffers_[i].TakeWaker(); |
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return i; |
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} |
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} |
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GRPC_TRACE_LOG(chaotic_good, INFO) |
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<< "CHAOTIC_GOOD: No data endpoint ready for " << length |
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<< " bytes on queue " << this; |
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write_waker_ = GetContext<Activity>()->MakeNonOwningWaker(); |
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return Pending{}; |
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} |
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|
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Poll<SliceBuffer> OutputBuffers::PollNext(uint32_t connection_id) { |
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Waker waker; |
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auto cleanup = absl::MakeCleanup([&waker]() { waker.Wakeup(); }); |
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MutexLock lock(&mu_); |
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auto& buffer = buffers_[connection_id]; |
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if (buffer.HavePending()) { |
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waker = std::move(write_waker_); |
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return buffer.TakePending(); |
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} |
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buffer.SetWaker(); |
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return Pending{}; |
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} |
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|
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///////////////////////////////////////////////////////////////////////////////
|
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// InputQueues
|
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|
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InputQueues::InputQueues(uint32_t num_connections) |
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: read_requests_(num_connections), read_request_waker_(num_connections) {} |
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|
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absl::StatusOr<uint64_t> InputQueues::CreateTicket(uint32_t connection_id, |
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size_t length) { |
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Waker waker; |
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auto cleanup = absl::MakeCleanup([&waker]() { waker.Wakeup(); }); |
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MutexLock lock(&mu_); |
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if (connection_id >= read_requests_.size()) { |
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return absl::UnavailableError( |
||||
absl::StrCat("Invalid connection id: ", connection_id)); |
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} |
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uint64_t ticket = next_ticket_id_; |
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++next_ticket_id_; |
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auto r = ReadRequest{length, ticket}; |
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GRPC_TRACE_LOG(chaotic_good, INFO) |
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<< "CHAOTIC_GOOD: New read ticket on #" << connection_id << " " << r; |
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read_requests_[connection_id].push_back(r); |
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outstanding_reads_.emplace(ticket, Waker{}); |
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waker = std::move(read_request_waker_[connection_id]); |
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return ticket; |
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} |
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|
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Poll<absl::StatusOr<SliceBuffer>> InputQueues::PollRead(uint64_t ticket) { |
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MutexLock lock(&mu_); |
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auto it = outstanding_reads_.find(ticket); |
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CHECK(it != outstanding_reads_.end()) << " ticket=" << ticket; |
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if (auto* waker = absl::get_if<Waker>(&it->second)) { |
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*waker = GetContext<Activity>()->MakeNonOwningWaker(); |
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return Pending{}; |
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} |
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auto result = std::move(absl::get<absl::StatusOr<SliceBuffer>>(it->second)); |
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outstanding_reads_.erase(it); |
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GRPC_TRACE_LOG(chaotic_good, INFO) |
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<< "CHAOTIC_GOOD: Poll for ticket #" << ticket |
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<< " completes: " << result.status(); |
||||
return result; |
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} |
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|
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Poll<std::vector<InputQueues::ReadRequest>> InputQueues::PollNext( |
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uint32_t connection_id) { |
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MutexLock lock(&mu_); |
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auto& q = read_requests_[connection_id]; |
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if (q.empty()) { |
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read_request_waker_[connection_id] = |
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GetContext<Activity>()->MakeNonOwningWaker(); |
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return Pending{}; |
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} |
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auto r = std::move(q); |
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q.clear(); |
||||
return r; |
||||
} |
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|
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void InputQueues::CompleteRead(uint64_t ticket, |
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absl::StatusOr<SliceBuffer> buffer) { |
||||
Waker waker; |
||||
auto cleanup = absl::MakeCleanup([&waker]() { waker.Wakeup(); }); |
||||
MutexLock lock(&mu_); |
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GRPC_TRACE_LOG(chaotic_good, INFO) |
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<< "CHAOTIC_GOOD: Complete ticket #" << ticket << ": " << buffer.status(); |
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auto it = outstanding_reads_.find(ticket); |
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if (it == outstanding_reads_.end()) return; // cancelled
|
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waker = std::move(absl::get<Waker>(it->second)); |
||||
it->second.emplace<absl::StatusOr<SliceBuffer>>(std::move(buffer)); |
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} |
||||
|
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void InputQueues::CancelTicket(uint64_t ticket) { |
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MutexLock lock(&mu_); |
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outstanding_reads_.erase(ticket); |
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} |
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|
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} // namespace data_endpoints_detail
|
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|
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///////////////////////////////////////////////////////////////////////////////
|
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// DataEndpoints
|
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|
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DataEndpoints::DataEndpoints( |
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std::vector<PromiseEndpoint> endpoints_vec, |
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grpc_event_engine::experimental::EventEngine* event_engine) |
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: output_buffers_(MakeRefCounted<data_endpoints_detail::OutputBuffers>( |
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endpoints_vec.size())), |
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input_queues_(MakeRefCounted<data_endpoints_detail::InputQueues>( |
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endpoints_vec.size())) { |
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CHECK(event_engine != nullptr); |
||||
for (auto& endpoint : endpoints_vec) { |
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// Enable RxMemoryAlignment and RPC receive coalescing after the transport
|
||||
// setup is complete. At this point all the settings frames should have
|
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// been read.
|
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endpoint.EnforceRxMemoryAlignmentAndCoalescing(); |
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} |
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auto endpoints = MakeRefCounted<data_endpoints_detail::Endpoints>(); |
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endpoints->endpoints = std::move(endpoints_vec); |
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parties_.reserve(2 * endpoints->endpoints.size()); |
||||
auto arena = SimpleArenaAllocator(0)->MakeArena(); |
||||
arena->SetContext(event_engine); |
||||
for (size_t i = 0; i < endpoints->endpoints.size(); ++i) { |
||||
auto write_party = Party::Make(arena); |
||||
auto read_party = Party::Make(arena); |
||||
write_party->Spawn( |
||||
"flush-data", |
||||
[i, endpoints, output_buffers = output_buffers_]() { |
||||
return Loop([i, endpoints, output_buffers]() { |
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return TrySeq( |
||||
output_buffers->Next(i), |
||||
[endpoints = endpoints.get(), i](SliceBuffer buffer) { |
||||
GRPC_TRACE_LOG(chaotic_good, INFO) |
||||
<< "CHAOTIC_GOOD: Write " << buffer.Length() |
||||
<< "b to data endpoint #" << i; |
||||
return endpoints->endpoints[i].Write(std::move(buffer)); |
||||
}, |
||||
[]() -> LoopCtl<absl::Status> { return Continue{}; }); |
||||
}); |
||||
}, |
||||
[](absl::Status) {}); |
||||
read_party->Spawn( |
||||
"read-data", |
||||
[i, endpoints, input_queues = input_queues_]() { |
||||
return Loop([i, endpoints, input_queues]() { |
||||
return TrySeq( |
||||
input_queues->Next(i), |
||||
[endpoints, i, input_queues]( |
||||
std::vector<data_endpoints_detail::InputQueues::ReadRequest> |
||||
requests) { |
||||
return TrySeqContainer( |
||||
std::move(requests), Empty{}, |
||||
[endpoints, i, input_queues]( |
||||
data_endpoints_detail::InputQueues::ReadRequest |
||||
read_request, |
||||
Empty) { |
||||
return Seq( |
||||
endpoints->endpoints[i].Read(read_request.length), |
||||
[ticket = read_request.ticket, |
||||
|
||||
input_queues](absl::StatusOr<SliceBuffer> buffer) { |
||||
input_queues->CompleteRead(ticket, |
||||
std::move(buffer)); |
||||
return Empty{}; |
||||
}); |
||||
}); |
||||
}, |
||||
[]() -> LoopCtl<absl::Status> { return Continue{}; }); |
||||
}); |
||||
}, |
||||
[](absl::Status) {}); |
||||
parties_.emplace_back(std::move(write_party)); |
||||
parties_.emplace_back(std::move(read_party)); |
||||
} |
||||
} |
||||
|
||||
} // namespace chaotic_good
|
||||
} // namespace grpc_core
|
||||
@ -0,0 +1,199 @@ |
||||
// Copyright 2024 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 GRPC_SRC_CORE_EXT_TRANSPORT_CHAOTIC_GOOD_DATA_ENDPOINTS_H |
||||
#define GRPC_SRC_CORE_EXT_TRANSPORT_CHAOTIC_GOOD_DATA_ENDPOINTS_H |
||||
|
||||
#include <cstdint> |
||||
|
||||
#include "src/core/lib/promise/party.h" |
||||
#include "src/core/lib/promise/promise.h" |
||||
#include "src/core/lib/slice/slice_buffer.h" |
||||
#include "src/core/lib/transport/promise_endpoint.h" |
||||
|
||||
namespace grpc_core { |
||||
namespace chaotic_good { |
||||
|
||||
namespace data_endpoints_detail { |
||||
struct Endpoints : public RefCounted<Endpoints> { |
||||
std::vector<PromiseEndpoint> endpoints; |
||||
}; |
||||
|
||||
// Buffered writes for one data endpoint
|
||||
class OutputBuffer { |
||||
public: |
||||
bool Accept(SliceBuffer& buffer); |
||||
Waker TakeWaker() { return std::move(flush_waker_); } |
||||
void SetWaker() { |
||||
flush_waker_ = GetContext<Activity>()->MakeNonOwningWaker(); |
||||
} |
||||
bool HavePending() const { return pending_.Length() > 0; } |
||||
SliceBuffer TakePending() { return std::move(pending_); } |
||||
|
||||
private: |
||||
Waker flush_waker_; |
||||
size_t pending_max_ = 1024 * 1024; |
||||
SliceBuffer pending_; |
||||
}; |
||||
|
||||
// The set of output buffers for all connected data endpoints
|
||||
class OutputBuffers : public RefCounted<OutputBuffers> { |
||||
public: |
||||
explicit OutputBuffers(uint32_t num_connections); |
||||
|
||||
auto Write(SliceBuffer output_buffer) { |
||||
return [output_buffer = std::move(output_buffer), this]() mutable { |
||||
return PollWrite(output_buffer); |
||||
}; |
||||
} |
||||
|
||||
auto Next(uint32_t connection_id) { |
||||
return [this, connection_id]() { return PollNext(connection_id); }; |
||||
} |
||||
|
||||
private: |
||||
Poll<uint32_t> PollWrite(SliceBuffer& output_buffer); |
||||
Poll<SliceBuffer> PollNext(uint32_t connection_id); |
||||
|
||||
Mutex mu_; |
||||
std::vector<OutputBuffer> buffers_ ABSL_GUARDED_BY(mu_); |
||||
Waker write_waker_ ABSL_GUARDED_BY(mu_); |
||||
}; |
||||
|
||||
class InputQueues : public RefCounted<InputQueues> { |
||||
public: |
||||
// One outstanding read.
|
||||
// ReadTickets get filed by read requests, and all tickets are fullfilled
|
||||
// by an endpoint.
|
||||
// A call may Await a ticket to get the bytes back later (or it may skip that
|
||||
// step - in which case the bytes are thrown away after reading).
|
||||
// This decoupling is necessary to ensure that cancelled reads by calls do not
|
||||
// cause data corruption for other calls.
|
||||
class ReadTicket { |
||||
public: |
||||
ReadTicket(absl::StatusOr<uint64_t> ticket, |
||||
RefCountedPtr<InputQueues> input_queues) |
||||
: ticket_(std::move(ticket)), input_queues_(std::move(input_queues)) {} |
||||
|
||||
ReadTicket(const ReadTicket&) = delete; |
||||
ReadTicket& operator=(const ReadTicket&) = delete; |
||||
ReadTicket(ReadTicket&& other) noexcept |
||||
: ticket_(std::move(other.ticket_)), |
||||
input_queues_(std::move(other.input_queues_)) {} |
||||
ReadTicket& operator=(ReadTicket&& other) noexcept { |
||||
ticket_ = std::move(other.ticket_); |
||||
input_queues_ = std::move(other.input_queues_); |
||||
return *this; |
||||
} |
||||
|
||||
~ReadTicket() { |
||||
if (input_queues_ != nullptr && ticket_.ok()) { |
||||
input_queues_->CancelTicket(*ticket_); |
||||
} |
||||
} |
||||
|
||||
auto Await() { |
||||
return If( |
||||
ticket_.ok(), |
||||
[&]() { |
||||
return |
||||
[ticket = *ticket_, input_queues = std::move(input_queues_)]() { |
||||
return input_queues->PollRead(ticket); |
||||
}; |
||||
}, |
||||
[&]() { |
||||
return Immediate(absl::StatusOr<SliceBuffer>(ticket_.status())); |
||||
}); |
||||
} |
||||
|
||||
private: |
||||
absl::StatusOr<uint64_t> ticket_; |
||||
RefCountedPtr<InputQueues> input_queues_; |
||||
}; |
||||
|
||||
struct ReadRequest { |
||||
size_t length; |
||||
uint64_t ticket; |
||||
|
||||
template <typename Sink> |
||||
friend void AbslStringify(Sink& sink, const ReadRequest& req) { |
||||
sink.Append(absl::StrCat("read#", req.ticket, ":", req.length, "b")); |
||||
} |
||||
}; |
||||
|
||||
explicit InputQueues(uint32_t num_connections); |
||||
|
||||
ReadTicket Read(uint32_t connection_id, size_t length) { |
||||
return ReadTicket(CreateTicket(connection_id, length), Ref()); |
||||
} |
||||
|
||||
auto Next(uint32_t connection_id) { |
||||
return [this, connection_id]() { return PollNext(connection_id); }; |
||||
} |
||||
|
||||
void CompleteRead(uint64_t ticket, absl::StatusOr<SliceBuffer> buffer); |
||||
|
||||
void CancelTicket(uint64_t ticket); |
||||
|
||||
private: |
||||
using ReadState = absl::variant<absl::StatusOr<SliceBuffer>, Waker>; |
||||
|
||||
absl::StatusOr<uint64_t> CreateTicket(uint32_t connection_id, size_t length); |
||||
Poll<absl::StatusOr<SliceBuffer>> PollRead(uint64_t ticket); |
||||
Poll<std::vector<ReadRequest>> PollNext(uint32_t connection_id); |
||||
|
||||
Mutex mu_; |
||||
uint64_t next_ticket_id_ ABSL_GUARDED_BY(mu_) = 0; |
||||
std::vector<std::vector<ReadRequest>> read_requests_ ABSL_GUARDED_BY(mu_); |
||||
std::vector<Waker> read_request_waker_; |
||||
absl::flat_hash_map<uint64_t, ReadState> outstanding_reads_ |
||||
ABSL_GUARDED_BY(mu_); |
||||
}; |
||||
} // namespace data_endpoints_detail
|
||||
|
||||
// Collection of data connections.
|
||||
class DataEndpoints { |
||||
public: |
||||
using ReadTicket = data_endpoints_detail::InputQueues::ReadTicket; |
||||
|
||||
explicit DataEndpoints( |
||||
std::vector<PromiseEndpoint> endpoints, |
||||
grpc_event_engine::experimental::EventEngine* event_engine); |
||||
|
||||
// Try to queue output_buffer against a data endpoint.
|
||||
// Returns a promise that resolves to the data endpoint connection id
|
||||
// selected.
|
||||
// Connection ids returned by this class are 0 based (which is different
|
||||
// to how chaotic good communicates them on the wire - those are 1 based
|
||||
// to allow for the control channel identification)
|
||||
auto Write(SliceBuffer output_buffer) { |
||||
return output_buffers_->Write(std::move(output_buffer)); |
||||
} |
||||
|
||||
ReadTicket Read(uint32_t connection_id, uint32_t length) { |
||||
return input_queues_->Read(connection_id, length); |
||||
} |
||||
|
||||
bool empty() const { return parties_.empty(); } |
||||
|
||||
private: |
||||
RefCountedPtr<data_endpoints_detail::OutputBuffers> output_buffers_; |
||||
RefCountedPtr<data_endpoints_detail::InputQueues> input_queues_; |
||||
std::vector<RefCountedPtr<Party>> parties_; |
||||
}; |
||||
|
||||
} // namespace chaotic_good
|
||||
} // namespace grpc_core
|
||||
|
||||
#endif // GRPC_SRC_CORE_EXT_TRANSPORT_CHAOTIC_GOOD_DATA_ENDPOINTS_H
|
||||
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