| // Copyright 2016 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef COMPONENTS_METRICS_SAMPLING_METRICS_PROVIDER_H_ |
| #define COMPONENTS_METRICS_SAMPLING_METRICS_PROVIDER_H_ |
| |
| #include "components/metrics/metrics_provider.h" |
| |
| namespace metrics { |
| |
| // Provides metrics related to sampling of metrics reporting clients. In |
| // particular, the rate at which clients are sampled. |
| class SamplingMetricsProvider : public MetricsProvider { |
| public: |
| // |sampling_rate_per_mille| is the number of clients per 1000 that are in the |
| // sample. |
| explicit SamplingMetricsProvider(int sampling_rate_per_mille); |
| ~SamplingMetricsProvider() override = default; |
| SamplingMetricsProvider(const SamplingMetricsProvider&) = delete; |
| SamplingMetricsProvider operator=(const SamplingMetricsProvider&) = delete; |
| |
| private: |
| // MetricsProvider: |
| void ProvideStabilityMetrics( |
| SystemProfileProto* system_profile_proto) override; |
| |
| int sampling_rate_per_mille_; |
| }; |
| |
| } // namespace metrics |
| |
| #endif // COMPONENTS_METRICS_SAMPLING_METRICS_PROVIDER_H_ |