Previously, using every=1m would run every minute from when the task was
created. This change restores the original intent, which is that "every
1m" happens on the minute, "every 1h" on the hour, etc.
- Brought over enterprise's QueryLogReader, with small adjustments
- Time filters are for the run's ScheduledFor field, per spec
- Adjusted run log timestamps for consistent formatting:
- ScheduledFor is RFC3339 because it's a whole-second timestamp
- StartedAt, FinishedAt use RFC3339Nano for high precision
- Several test adjustments to use relative time, for easier integration
with storage retention
This also changes the backend.Store API to remove the EnableTask and
DisableTask methods, merging their functionality into ModifyTask, which
has been named to UpdateTask to keep closer to the CRUD acronym.
This renames TaskEnabled and TaskDisabled to TaskActive and
TaskInactive, to keep in line with the swagger and other parts of the
system. But I left the EnableTask and DisableTask methods on the Store
interface for now. I could see eliminating those methods if we adjust
the signature of the UpdateTask method.
Introduce a RunLogBase type that encapsulates the base information
shared across multiple logs for the same run. This has the information
previously part of the API (Task and RunID), and includes the addition
of a RunScheduledFor timestamp.
Also remove the RunScheduled value for RunStatus, as it was never used
in the scheduler.
Also fix a handful of segfaults caused by improperly retained byte slices
from bolt, and combine two view transactions into one to avoid data
race when a delete happened between them.
CreateNextRun centralizes StoreTaskMeta modification and therefore
simplifies Store functions a bit.
Store.CreateNextRun isn't called anywhere yet. The next step here is to
use CreateNextRun from the scheduler and remove Store.CreateRun.
More specifically, introduce a `scheduleAfter` argument to
Store.CreateTask. The previous behavior was leaving a new task's meta
LatestComplete value set to zero, which meant that the first run of a
schedule would start from 1970. Now, it's set to time.Now unless
otherwise specified.
Updates #595.