feat: add backend_v1 migration

backend_v1/app/jobs/demo_job.go

@@ -0,0 +1,53 @@
+package jobs
+
+import (
+	"context"
+	"sort"
+	"time"
+
+	. "github.com/riverqueue/river"
+	log "github.com/sirupsen/logrus"
+	_ "go.ipao.vip/atom"
+	"go.ipao.vip/atom/contracts"
+	_ "go.ipao.vip/atom/contracts"
+)
+
+var _ contracts.JobArgs = DemoJob{}
+
+type DemoJob struct {
+	Strings []string `json:"strings"`
+}
+
+func (s DemoJob) InsertOpts() InsertOpts {
+	return InsertOpts{
+		Queue:    QueueDefault,
+		Priority: PriorityDefault,
+	}
+}
+
+func (DemoJob) Kind() string       { return "demo_job" }
+func (a DemoJob) UniqueID() string { return a.Kind() }
+
+var _ Worker[DemoJob] = (*DemoJobWorker)(nil)
+
+// @provider(job)
+type DemoJobWorker struct {
+	WorkerDefaults[DemoJob]
+}
+
+func (w *DemoJobWorker) NextRetry(job *Job[DemoJob]) time.Time {
+	return time.Now().Add(30 * time.Second)
+}
+
+func (w *DemoJobWorker) Work(ctx context.Context, job *Job[DemoJob]) error {
+	logger := log.WithField("job", job.Args.Kind())
+
+	logger.Infof("[START] %s args: %v", job.Args.Kind(), job.Args.Strings)
+	defer logger.Infof("[END] %s", job.Args.Kind())
+
+	// modify below
+	sort.Strings(job.Args.Strings)
+	logger.Infof("[%s] Sorted strings: %v\n", time.Now().Format(time.TimeOnly), job.Args.Strings)
+
+	return nil
+}