This patch will add more granularity to metrics of account_info or
container_info cache and related backend lookups.
Before this patch, related metrics are:
1.account.info.cache.[hit|miss|skip]
2.container.info.cache.[hit|miss|skip]
With this patch, they are going to become:
1.account/container.info.infocache.hit
cache hits with infocache.
2.account/container.info.cache.hit
cache hits with memcache.
3.account/container.info.cache.[miss|skip|disabled]
.<status_int>
Those are operations made to backend due to below reasons.
miss: cache misses.
skip: the selective skips per skip percentage config.
disabled: memcache is disabled.
For each kind of operation metrics, suffix <status_int> will
count operations with different status. Then a sum of all
status sub-metrics will the total metrics of that operation.
UpgradeImpact
=============
Metrics dashboard will need updates to display those changed metrics
correctly, also some infocache metrics are newly added, please see
above message for all changes needed.
Change-Id: I60a9f1c349b4bc78ecb850fb26ae56eb20fa39c6
bc300a516b