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use a locking mechanism for the scheduler instead of the singleton model in the cron lib

This commit is contained in:
Andre Medeiros 2023-05-20 09:47:38 -04:00
parent c216161836
commit 0accbde48b
1 changed files with 15 additions and 5 deletions
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20
internal/cmd/scheduler.go
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@ -23,8 +23,14 @@ import (
"github.com/christianselig/apollo-backend/internal/repository"
)
const batchSize = 250
const accountEnqueueSeconds = 60
const (
batchSize = 250
accountEnqueueSeconds = 60
)
var (
enqueueAccountsMutex sync.Mutex
)
func SchedulerCmd(ctx context.Context) *cobra.Command {
cmd := &cobra.Command{
@ -103,9 +109,7 @@ func SchedulerCmd(ctx context.Context) *cobra.Command {
s := gocron.NewScheduler(time.UTC)
s.SetMaxConcurrentJobs(8, gocron.WaitMode)
eaj, _ := s.Every(5).Seconds().Do(func() { enqueueAccounts(ctx, logger, statsd, db, redis, luaSha, notifQueue) })
eaj.SingletonMode()
_, _ = s.Every(5).Seconds().Do(func() { enqueueAccounts(ctx, logger, statsd, db, redis, luaSha, notifQueue) })
_, _ = s.Every(5).Seconds().Do(func() { enqueueSubreddits(ctx, logger, statsd, db, []rmq.Queue{subredditQueue, trendingQueue}) })
_, _ = s.Every(5).Seconds().Do(func() { enqueueUsers(ctx, logger, statsd, db, userQueue) })
_, _ = s.Every(5).Seconds().Do(func() { enqueueLiveActivities(ctx, logger, db, redis, luaSha, liveActivitiesQueue) })
@ -456,6 +460,12 @@ func enqueueStuckAccounts(ctx context.Context, logger *zap.Logger, statsd *stats
}
func enqueueAccounts(ctx context.Context, logger *zap.Logger, statsd *statsd.Client, pool *pgxpool.Pool, redisConn *redis.Client, luaSha string, queue rmq.Queue) {
if enqueueAccountsMutex.TryLock() {
defer enqueueAccountsMutex.Unlock()
} else {
return
}
ctx, cancel := context.WithCancel(ctx)
defer cancel()