We want to know how long it's actually taking to process asynchronous
contact/host deletions and DNS refreshes on host renames. This adds
instrumentation. Five metrics are recorded as follows:
* An incrementable metric for each async task processed (split out by
type of task and result).
* Two event metrics for processing time between when a task is enqueued
and when it is processed -- tracked separately for contact/host
deletion and DNS refresh on host rename.
* Two event metrics for batch size every time the two mapreduces are
run (this is usually 0). Tracked separately for contact/host deletion
and DNS refresh on host rename.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=157001310
We should be able to remove the dependency on the App Engine [] library from the frontend service, since no []s actually run there. In order to do this, we need to remove the various []-reliant classes from the frontend service build. This CL begins the process by moving the two async "flows" to a different package which is not included in the frontend service.
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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=142159568