scheduler #19
3 changed files with 13 additions and 11 deletions
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@ -23,43 +23,44 @@ func SchedulerSample(c *core.Context) *core.Response {
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ctx := context.Background()
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ctx := context.Background()
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// ── Enqueue a "send_email" task ─────────────────────────────────────────
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// ── Enqueue a "send_email" task (runs once, sequential) ────────────────
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emailPayload, _ := json.Marshal(map[string]interface{}{
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emailPayload, _ := json.Marshal(map[string]interface{}{
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"to": "user@example.com",
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"to": "user@example.com",
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"subject": "Hello from the scheduler!",
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"subject": "Hello from the scheduler!",
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})
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})
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item1, err := store.Enqueue(ctx, "send_email", string(emailPayload), 0)
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item1, err := store.Enqueue(ctx, "send_email", string(emailPayload), 0, 1, 0)
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if err != nil {
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if err != nil {
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c.GetLogger().Error(fmt.Sprintf("failed to enqueue send_email: %v", err))
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c.GetLogger().Error(fmt.Sprintf("failed to enqueue send_email: %v", err))
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return c.Response.SetStatusCode(500).Json(`{"message": "failed to enqueue send_email"}`)
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return c.Response.SetStatusCode(500).Json(`{"message": "failed to enqueue send_email"}`)
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}
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}
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c.GetLogger().Info(fmt.Sprintf("[scheduler] enqueued send_email task id=%d", item1.ID))
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c.GetLogger().Info(fmt.Sprintf("[scheduler] enqueued send_email task id=%d (maxRuns=1, thread=0)", item1.ID))
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// ── Enqueue a "flaky_task" (demonstrates error recording) ───────────────
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// ── Enqueue a "flaky_task" (runs 3 times, concurrent) ──────────────────
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flakyPayload, _ := json.Marshal(map[string]interface{}{
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flakyPayload, _ := json.Marshal(map[string]interface{}{
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"description": "This task will fail and the error will be recorded",
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"description": "This task will fail and the error will be recorded",
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})
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})
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item2, err := store.Enqueue(ctx, "flaky_task", string(flakyPayload), 0)
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item2, err := store.Enqueue(ctx, "flaky_task", string(flakyPayload), 0, 3, 1)
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if err != nil {
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if err != nil {
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c.GetLogger().Error(fmt.Sprintf("failed to enqueue flaky_task: %v", err))
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c.GetLogger().Error(fmt.Sprintf("failed to enqueue flaky_task: %v", err))
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return c.Response.SetStatusCode(500).Json(`{"message": "failed to enqueue flaky_task"}`)
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return c.Response.SetStatusCode(500).Json(`{"message": "failed to enqueue flaky_task"}`)
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}
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}
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c.GetLogger().Info(fmt.Sprintf("[scheduler] enqueued flaky_task id=%d", item2.ID))
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c.GetLogger().Info(fmt.Sprintf("[scheduler] enqueued flaky_task id=%d (maxRuns=3, thread=1/concurrent)", item2.ID))
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// ── Enqueue a high-priority "send_email" task ───────────────────────────
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// ── Enqueue a high-priority "send_email" (repeats indefinitely, sequential) ──
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urgentPayload, _ := json.Marshal(map[string]interface{}{
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urgentPayload, _ := json.Marshal(map[string]interface{}{
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"to": "urgent@example.com",
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"to": "urgent@example.com",
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"subject": "URGENT: Priority message",
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"subject": "URGENT: Priority message",
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})
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})
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item3, err := store.Enqueue(ctx, "send_email", string(urgentPayload), 10)
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item3, err := store.Enqueue(ctx, "send_email", string(urgentPayload), 10, -1, 0)
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if err != nil {
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if err != nil {
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c.GetLogger().Error(fmt.Sprintf("failed to enqueue urgent send_email: %v", err))
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c.GetLogger().Error(fmt.Sprintf("failed to enqueue urgent send_email: %v", err))
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return c.Response.SetStatusCode(500).Json(`{"message": "failed to enqueue urgent send_email"}`)
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return c.Response.SetStatusCode(500).Json(`{"message": "failed to enqueue urgent send_email"}`)
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}
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}
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c.GetLogger().Info(fmt.Sprintf("[scheduler] enqueued high-priority send_email task id=%d", item3.ID))
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c.GetLogger().Info(fmt.Sprintf("[scheduler] enqueued high-priority send_email id=%d (maxRuns=-1/infinite, thread=0)", item3.ID))
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message := fmt.Sprintf(`{"message": "Enqueued 3 scheduler tasks (send_email x2, flaky_task x1)", "tasks": [%d, %d, %d]}`,
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message := fmt.Sprintf(`{"message": "Enqueued 3 scheduler tasks (send_email, flaky_task)", "tasks": [%d, %d, %d]}`,
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item1.ID, item2.ID, item3.ID)
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item1.ID, item2.ID, item3.ID)
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return c.Response.Json(message)
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return c.Response.Json(message)
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}
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}
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@ -28,7 +28,7 @@ func handleSendEmail(ctx context.Context, item *scheduler.QueueItem) error {
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return fmt.Errorf("invalid send_email payload: %w", err)
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return fmt.Errorf("invalid send_email payload: %w", err)
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}
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}
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log.Printf("[scheduler] [send_email] → to=%s subject=%q", payload.To, payload.Subject)
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log.Printf("[scheduler] [send_email] → to=%s subject=%q", payload.To, payload.Subject)
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time.Sleep(50 * time.Millisecond) // simulate I/O
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time.Sleep(2000 * time.Millisecond) // simulate I/O
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return nil
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return nil
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}
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}
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@ -30,6 +30,7 @@ func RunAutoMigrations() {
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// Simple scheduler (sche) tables — enabled when scheduler is active
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// Simple scheduler (sche) tables — enabled when scheduler is active
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db.AutoMigrate(&scheduler.QueueItem{})
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db.AutoMigrate(&scheduler.QueueItem{})
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db.AutoMigrate(&scheduler.ProcessedItem{})
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db.AutoMigrate(&scheduler.ProcessedItem{})
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db.AutoMigrate(&scheduler.SchedulerMeta{})
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// End your auto migrations
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// End your auto migrations
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