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example_job_snooze_test.go
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example_job_snooze_test.go
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package river_test
import (
"context"
"fmt"
"log/slog"
"time"
"github.com/jackc/pgx/v5/pgxpool"
"github.com/riverqueue/river"
"github.com/riverqueue/river/internal/riverinternaltest"
"github.com/riverqueue/river/riverdriver/riverpgxv5"
"github.com/riverqueue/river/rivershared/util/slogutil"
)
type SnoozingArgs struct {
ShouldSnooze bool
}
func (args SnoozingArgs) Kind() string { return "Snoozing" }
type SnoozingWorker struct {
river.WorkerDefaults[SnoozingArgs]
}
func (w *SnoozingWorker) Work(ctx context.Context, job *river.Job[SnoozingArgs]) error {
if job.Args.ShouldSnooze {
fmt.Println("snoozing job for 5 minutes")
return river.JobSnooze(5 * time.Minute)
}
return nil
}
// Example_jobSnooze demonstrates how to snooze a job from within Work using
// JobSnooze. The job will be run again after 5 minutes and the snooze attempt
// will increment the job's max attempts, ensuring that one can snooze as many
// times as desired.
func Example_jobSnooze() { //nolint:dupl
ctx := context.Background()
dbPool, err := pgxpool.NewWithConfig(ctx, riverinternaltest.DatabaseConfig("river_test_example"))
if err != nil {
panic(err)
}
defer dbPool.Close()
// Required for the purpose of this test, but not necessary in real usage.
if err := riverinternaltest.TruncateRiverTables(ctx, dbPool); err != nil {
panic(err)
}
workers := river.NewWorkers()
river.AddWorker(workers, &SnoozingWorker{})
riverClient, err := river.NewClient(riverpgxv5.New(dbPool), &river.Config{
Logger: slog.New(&slogutil.SlogMessageOnlyHandler{Level: slog.LevelWarn}),
Queues: map[string]river.QueueConfig{
river.QueueDefault: {MaxWorkers: 10},
},
TestOnly: true, // suitable only for use in tests; remove for live environments
Workers: workers,
})
if err != nil {
panic(err)
}
// The subscription bits are not needed in real usage, but are used to make
// sure the test waits until the job is worked.
subscribeChan, subscribeCancel := riverClient.Subscribe(river.EventKindJobSnoozed)
defer subscribeCancel()
if err := riverClient.Start(ctx); err != nil {
panic(err)
}
if _, err = riverClient.Insert(ctx, SnoozingArgs{ShouldSnooze: true}, nil); err != nil {
panic(err)
}
waitForNJobs(subscribeChan, 1)
if err := riverClient.Stop(ctx); err != nil {
panic(err)
}
// Output:
// snoozing job for 5 minutes
}