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The C based gRPC (C++, Python, Ruby, Objective-C, PHP, C#)
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73 lines
2.2 KiB
73 lines
2.2 KiB
// |
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// Copyright 2022 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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#ifndef GRPCPP_EXT_ORCA_SERVICE_H |
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#define GRPCPP_EXT_ORCA_SERVICE_H |
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#include <map> |
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#include <string> |
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#include "absl/time/time.h" |
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#include "absl/types/optional.h" |
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#include <grpcpp/ext/server_metric_recorder.h> |
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#include <grpcpp/impl/service_type.h> |
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#include <grpcpp/impl/sync.h> |
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#include <grpcpp/server_builder.h> |
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#include <grpcpp/support/server_callback.h> |
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#include <grpcpp/support/slice.h> |
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namespace grpc { |
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namespace experimental { |
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// RPC service implementation for supplying out-of-band backend |
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// utilization metrics to clients. |
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class OrcaService : public Service { |
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public: |
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struct Options { |
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// Minimum report interval. If a client requests an interval lower |
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// than this value, this value will be used instead. |
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absl::Duration min_report_duration = absl::Seconds(30); |
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Options() = default; |
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Options& set_min_report_duration(absl::Duration duration) { |
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min_report_duration = duration; |
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return *this; |
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} |
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}; |
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// ServerMetricRecorder is required. |
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OrcaService(ServerMetricRecorder* const server_metric_recorder, |
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Options options); |
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private: |
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class Reactor; |
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Slice GetOrCreateSerializedResponse(); |
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const ServerMetricRecorder* const server_metric_recorder_; |
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const absl::Duration min_report_duration_; |
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grpc::internal::Mutex mu_; |
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// Contains the last serialized metrics from server_metric_recorder_. |
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absl::optional<Slice> response_slice_ ABSL_GUARDED_BY(mu_); |
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// The update sequence number of metrics serialized in response_slice_. |
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absl::optional<uint64_t> response_slice_seq_ ABSL_GUARDED_BY(mu_); |
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}; |
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} // namespace experimental |
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} // namespace grpc |
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#endif // GRPCPP_EXT_ORCA_SERVICE_H
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