commit 1282f3805b1b6f50761f3e136d569e85dbda7090
author Calin Juravle <calin@google.com> Mon Jun 21 20:22:12 2021 -0700
committer Treehugger Robot <treehugger-gerrit@google.com> Wed Jun 23 19:22:50 2021 +0000
tree eaf74fab46eb96d51e327676e734a139afbe5fef
parent 7f0473851d9a8d5644fde8c483390a985c238433

Add sampling support in the metrics reporter

The sample rate percentage can be configured via 2 runtime
flags (MetricsReportingMods and MetricsReportingNumMods).

A runtime session will report metrics if and only if its
session id % MetricsReportingNumMods < MetricsReportingMods.

A value of 0 on the mods will effectively disable reporting,
while configuring MetricsReportingMods to be equal to the
MetricsReportingNumMods will enable reporting in all cases.

Test: gtest
Bug: 170149255
Change-Id: Ie1353e4fc0ff695fc627696145d95e9ccd3c6a94