tree b18c68bd47b99abd3e748a4820533a41396bc464
parent 11ac5d4a81bc72dadd842e247430077476d3c51d
author Congbin Guo <guocb@google.com> 1533231946 -0700
committer chrome-bot <chrome-bot@chromium.org> 1535055651 -0700

Gs Cache: nginx log metrics

In this change, we add a metric to monitor Nginx access log file for Gs
Cache service. It allow us to know what's the cache status, HIT/MISS
etc.

BUG=chromium:824580
TEST=Ran unit tests.

Change-Id: Ie4de6444f84700d053dd7a53a76955ce6d12d8b7
Reviewed-on: https://chromium-review.googlesource.com/1168399
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: Congbin Guo <guocb@chromium.org>
Reviewed-by: Prathmesh Prabhu <pprabhu@chromium.org>