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package maintenance
import (
"context"
"time"
"gitlab.com/gitlab-org/gitaly/v16/internal/dontpanic"
"gitlab.com/gitlab-org/gitaly/v16/internal/gitaly/config"
"gitlab.com/gitlab-org/gitaly/v16/internal/log"
)
// StoragesJob runs a job on storages. The string slice param indicates which
// storages are currently enabled for the feature.
type StoragesJob func(context.Context, log.Logger, []string) error
// DailyWorker allows for a storage job to be executed on a daily schedule
type DailyWorker struct {
// clock allows the time telling to be overridden deterministically in unit tests
clock func() time.Time
// timer allows the timing of tasks to be overridden deterministically in unit tests
timer func(time.Duration) <-chan time.Time
}
// NewDailyWorker returns an initialized daily worker
func NewDailyWorker() DailyWorker {
return DailyWorker{
clock: time.Now,
timer: time.After,
}
}
func (dw DailyWorker) nextTime(hour, minute int) time.Time {
n := dw.clock()
next := time.Date(n.Year(), n.Month(), n.Day(), hour, minute, 0, 0, n.Location())
if next.Equal(n) || next.Before(n) {
next = next.AddDate(0, 0, 1)
}
return next
}
// StartDaily will run the provided job every day at the specified time for the
// specified duration. Only the specified storages wil be worked on.
func (dw DailyWorker) StartDaily(ctx context.Context, l log.Logger, schedule config.DailyJob, job StoragesJob) error {
if schedule.Duration == 0 || len(schedule.Storages) == 0 || schedule.Disabled {
return nil
}
for {
nt := dw.nextTime(int(schedule.Hour), int(schedule.Minute))
l.WithField("scheduled", nt).Info("maintenance: daily scheduled")
var start time.Time
select {
case <-ctx.Done():
return ctx.Err()
case start = <-dw.timer(nt.Sub(dw.clock())):
l.WithField("max_duration", schedule.Duration).
Info("maintenance: daily starting")
}
var jobErr error
dontpanic.Try(l, func() {
ctx, cancel := context.WithTimeout(ctx, schedule.Duration.Duration())
defer cancel()
jobErr = job(ctx, l, schedule.Storages)
})
l.WithError(jobErr).
WithField("max_duration", schedule.Duration).
WithField("actual_duration", time.Since(start)).
Info("maintenance: daily completed")
}
}
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