edb9f00df7
This change is the complete Widevine metrics system. It will measure and record runtime information about what is happening in the CDM - such as errors and throughput. Bug: 33745339 Bug: 26027857 Change-Id: Ic9a82074f1e2b72c72d751b235f8ae361232787d
47 lines
1.7 KiB
C++
47 lines
1.7 KiB
C++
// Copyright 2017 Google Inc. All Rights Reserved.
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//
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// This file contains the declarations for the Metric class and related
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// types.
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#ifndef WVCDM_METRICS_METRIC_PUBLISHER_H_
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#define WVCDM_METRICS_METRIC_PUBLISHER_H_
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namespace wvcdm {
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namespace metrics {
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// The MetricNotification is implemented by the code that instantiates
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// MetricPublisher instances. The caller provides this MetricNotification
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// instance to MetricPublisher::Publish. In turn, Publish will make a call to
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// UpdateMetric for each value to be published. The Metric may contain zero or
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// more values to be updated.
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class MetricNotification {
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public:
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virtual ~MetricNotification() {};
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// The metric_id is the metric name, plus the metric part name, and the
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// metric field name/value string. E.g.
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// name: "drm/cdm/decrypt/duration"
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// part: "mean"
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// field name/value string: "{error_code:0&buffer_size:1024}"
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// becomes: "drm/cdm/decrypt/duration/mean/{error_code:0&buffer_size:1024}".
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virtual void UpdateString(const std::string& metric_id,
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const std::string& value) = 0;
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virtual void UpdateInt32(const std::string& metric_id, int32_t value) = 0;
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virtual void UpdateInt64(const std::string& metric_id, int64_t value) = 0;
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virtual void UpdateDouble(const std::string& metric_id, double value) = 0;
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};
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// This abstract class merely provides the definition for publishing the value
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// of the metric.
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class MetricPublisher {
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public:
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virtual ~MetricPublisher() { }
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// Publish metric values to the MetricNotification. |subscriber| must
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// not be null and is owned by the caller.
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virtual void Publish(MetricNotification* subscriber) = 0;
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};
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} // namespace metrics
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} // namespace wvcdm
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#endif // WVCDM_METRICS_METRIC_PUBLISHER_H_
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