[telemetry] Add telemetry to SbDrmCreateSystem (#4058)

Adding additional Media Telemetry to cover SbPlayer DRM functions. The rough range of each function: 1. SbDrmCreateSystem(): 26.307ms to 94.221ms b/303328238 (cherry picked from commit 26975cf)
youtube · Aug 30, 2024 · 6bfd473 · 6bfd473
1 parent 212be13
commit 6bfd473
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Showing 6 changed files with 47 additions and 4 deletions.
diff --git a/cobalt/media/base/drm_system.cc b/cobalt/media/base/drm_system.cc
@@ -25,6 +25,23 @@
 namespace cobalt {
 namespace media {
 
+SbDrmSystem CreateSbDrmSystemWithHistogram(
+    const char* key_system, void* context,
+    SbDrmSessionUpdateRequestFunc update_request_callback,
+    SbDrmSessionUpdatedFunc session_updated_callback,
+    SbDrmSessionKeyStatusesChangedFunc key_statuses_changed_callback,
+    SbDrmServerCertificateUpdatedFunc server_certificate_updated_callback,
+    SbDrmSessionClosedFunc session_closed_callback,
+    MediaMetricsProvider& media_metrics_provider) {
+  media_metrics_provider.StartTrackingAction(MediaAction::SBDRM_CREATE);
+  auto drm_system = SbDrmCreateSystem(
+      key_system, context, update_request_callback, session_updated_callback,
+      key_statuses_changed_callback, server_certificate_updated_callback,
+      session_closed_callback);
+  media_metrics_provider.EndTrackingAction(MediaAction::SBDRM_CREATE);
+  return drm_system;
+}
+
 DECLARE_INSTANCE_COUNTER(DrmSystem);
 
 DrmSystem::Session::Session(
@@ -80,10 +97,11 @@ void DrmSystem::Session::Close() {
 }
 
 DrmSystem::DrmSystem(const char* key_system)
-    : wrapped_drm_system_(SbDrmCreateSystem(
+    : wrapped_drm_system_(CreateSbDrmSystemWithHistogram(
           key_system, this, OnSessionUpdateRequestGeneratedFunc,
           OnSessionUpdatedFunc, OnSessionKeyStatusesChangedFunc,
-          OnServerCertificateUpdatedFunc, OnSessionClosedFunc)),
+          OnServerCertificateUpdatedFunc, OnSessionClosedFunc,
+          media_metrics_provider_)),
       task_runner_(base::SequencedTaskRunner::GetCurrentDefault()),
       ALLOW_THIS_IN_INITIALIZER_LIST(weak_ptr_factory_(this)),
       weak_this_(weak_ptr_factory_.GetWeakPtr()) {

diff --git a/cobalt/media/base/drm_system.h b/cobalt/media/base/drm_system.h
@@ -232,6 +232,7 @@ class DrmSystem : public base::RefCounted<DrmSystem> {
                                              SbDrmStatus status,
                                              const char* error_message);
 
+  MediaMetricsProvider media_metrics_provider_;
   const SbDrmSystem wrapped_drm_system_;
   scoped_refptr<base::SequencedTaskRunner> const task_runner_;
 
@@ -253,8 +254,6 @@ class DrmSystem : public base::RefCounted<DrmSystem> {
   // Supports concurrent calls to |Session::Update|.
   TicketToSessionUpdateMap ticket_to_session_update_map_;
 
-  MediaMetricsProvider media_metrics_provider_;
-
   DISALLOW_COPY_AND_ASSIGN(DrmSystem);
 };
 

diff --git a/cobalt/media/base/metrics_provider.cc b/cobalt/media/base/metrics_provider.cc
@@ -151,6 +151,12 @@ void MediaMetricsProvider::ReportActionLatencyUMA(
       UMA_HISTOGRAM_TIMES("Cobalt.Media.SbPlayer.Destroy.LatencyTiming",
                           action_duration);
       break;
+    case MediaAction::SBDRM_CREATE:
+      UMA_HISTOGRAM_CUSTOM_MICROSECONDS_TIMES(
+          "Cobalt.Media.SbDrm.Create.LatencyTiming", action_duration,
+          base::TimeDelta::FromMicroseconds(500),
+          base::TimeDelta::FromMilliseconds(250), 50);
+      break;
     case MediaAction::SBDRM_DESTROY:
       UMA_HISTOGRAM_CUSTOM_MICROSECONDS_TIMES(
           "Cobalt.Media.SbDrm.Destroy.LatencyTiming", action_duration,

diff --git a/cobalt/media/base/metrics_provider.h b/cobalt/media/base/metrics_provider.h
@@ -44,6 +44,7 @@ enum class MediaAction : uint8_t {
   SBPLAYER_CREATE,
   SBPLAYER_CREATE_URL_PLAYER,
   SBPLAYER_DESTROY,
+  SBDRM_CREATE,
   SBDRM_DESTROY,
   SBDRM_GENERATE_SESSION_UPDATE_REQUEST,
   SBDRM_UPDATE_SESSION,

diff --git a/cobalt/media/base/metrics_provider_test.cc b/cobalt/media/base/metrics_provider_test.cc
@@ -104,6 +104,16 @@ TEST_F(MediaMetricsProviderTest, SbDrmCloseSession) {
       std::string(kUmaPrefix) + "SbDrm.CloseSession.LatencyTiming", 570, 1);
 }
 
+TEST_F(MediaMetricsProviderTest, SbDrmCreate) {
+  metrics_.StartTrackingAction(MediaAction::SBDRM_CREATE);
+
+  clock_.Advance(base::TimeDelta::FromMicroseconds(570));
+  metrics_.EndTrackingAction(MediaAction::SBDRM_CREATE);
+
+  histogram_tester_.ExpectUniqueSample(
+      std::string(kUmaPrefix) + "SbDrm.Create.LatencyTiming", 570, 1);
+}
+
 TEST_F(MediaMetricsProviderTest, SbDrmDestroy) {
   metrics_.StartTrackingAction(MediaAction::SBDRM_DESTROY);
 

diff --git a/tools/metrics/histograms/metadata/cobalt/histograms.xml b/tools/metrics/histograms/metadata/cobalt/histograms.xml
@@ -284,6 +284,15 @@ Always run the pretty print utility on this file after editing:
   <summary>Timing data for closing session of SbDrm.</summary>
 </histogram>
 
+<histogram name="Cobalt.Media.SbDrm.Create.LatencyTiming" units="microseconds"
+    expires_after="never">
+<!-- expires-never: Needed for long-term tracking of SbPlayer latencies. -->
+
+  <owner>[email protected]</owner>
+  <owner>[email protected]</owner>
+  <summary>Timing data for the creation of SbDrm.</summary>
+</histogram>
+
 <histogram name="Cobalt.Media.SbDrm.Destroy.LatencyTiming" units="microseconds"
     expires_after="never">
 <!-- expires-never: Needed for long-term tracking of SbPlayer latencies. -->