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Commit 43bee505 authored by Bertrand SIMONNET's avatar Bertrand SIMONNET Committed by chrome-internal-fetch
Browse files

metrics: Document uploader functionality 

Metrics uploader can be activated with the metrics_uploader use flag, update
README to reflect that.
Also fix the section about activating metrics.

BUG=None
TEST=None

Change-Id: I2c6d0abe6536eb419c5b49f149b6d3f097670325
Reviewed-on: https://chromium-review.googlesource.com/216631


Reviewed-by: default avatarMike Frysinger <vapier@chromium.org>
Tested-by: default avatarBertrand Simonnet <bsimonnet@chromium.org>
Commit-Queue: Bertrand Simonnet <bsimonnet@chromium.org>
parent 4bcffd3d

metrics/README

+7 −4
Original line number Diff line number Diff line
@@ -3,8 +3,11 @@ Use of this source code is governed by a BSD-style license that can be 
found in the LICENSE file.



The Chrome OS "metrics" package contains utilities for client-side user metric

collection. The collected data is sent to Chrome for transport to the UMA

server.

collection.

When Chrome is installed, Chrome will take care of aggregating and uploading the

metrics to the UMA server.

When Chrome is not installed (embedded build) and the metrics_uploader USE flag

is set, metrics_daemon will aggregate and upload the metrics itself.





================================================================================
@@ -36,8 +39,8 @@ UMA. In order to use the library in a module, you need to do the following: 
  For more information on the C API see c_metrics_library.h.



- Samples are sent to Chrome only if the "/home/chronos/Consent To Send Stats"

  file exists (see the AreMetricsEnabled API method). Normally, this file is

  created when the user opts into metrics collection.

  file exists or the metrics are declared enabled in the policy file (see the

  AreMetricsEnabled API method).



- On the target platform, shortly after the sample is sent, it should be visible

  in Chrome through "about:histograms".