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https://github.com/oarkflow/mq.git
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109 lines
3.1 KiB
Go
109 lines
3.1 KiB
Go
package main
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import (
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"context"
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"fmt"
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"time"
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"github.com/oarkflow/mq"
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"github.com/oarkflow/mq/examples/tasks"
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)
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func main() {
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handler := tasks.SchedulerHandler
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callback := tasks.SchedulerCallback
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// Initialize the pool with various parameters.
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pool := mq.NewPool(3,
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mq.WithTaskQueueSize(5),
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mq.WithMaxMemoryLoad(1000),
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mq.WithHandler(handler),
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mq.WithPoolCallback(callback),
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mq.WithTaskStorage(mq.NewMemoryTaskStorage(10*time.Minute)),
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)
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scheduler := mq.NewScheduler(pool)
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scheduler.Start()
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ctx := context.Background()
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// -------------------------------
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// Special String Examples
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// -------------------------------
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// Task scheduled with @every for a duration of 30 seconds.
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scheduler.AddTask(ctx, &mq.Task{ID: "Every 30 Seconds Task"},
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mq.WithScheduleSpec("@every 30s"),
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mq.WithRecurring(),
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)
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// Task scheduled with @every using a 1-minute duration.
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scheduler.AddTask(ctx, &mq.Task{ID: "Every Minute Task"},
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mq.WithScheduleSpec("@every 1m"),
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mq.WithRecurring(),
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)
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// Task scheduled with @daily (runs at midnight by default).
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scheduler.AddTask(ctx, &mq.Task{ID: "Daily Task"},
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mq.WithScheduleSpec("@daily"),
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mq.WithRecurring(),
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)
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// Task scheduled with @weekly (runs at midnight on Sundays).
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scheduler.AddTask(ctx, &mq.Task{ID: "Weekly Task"},
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mq.WithScheduleSpec("@weekly"),
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mq.WithRecurring(),
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)
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// Task scheduled with @monthly (runs on the 1st of every month at midnight).
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scheduler.AddTask(ctx, &mq.Task{ID: "Monthly Task"},
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mq.WithScheduleSpec("@monthly"),
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mq.WithRecurring(),
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)
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// Task scheduled with @yearly (or @annually) – runs on January 1st at midnight.
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scheduler.AddTask(ctx, &mq.Task{ID: "Yearly Task"},
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mq.WithScheduleSpec("@yearly"),
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mq.WithRecurring(),
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)
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// -------------------------------
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// Cron Spec Examples
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// -------------------------------
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// Example using a standard 5-field cron expression:
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// "0 * * * *" means at minute 0 of every hour.
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scheduler.AddTask(ctx, &mq.Task{ID: "Cron 5-field Task"},
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mq.WithScheduleSpec("0 * * * *"),
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mq.WithRecurring(),
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)
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// Example using an extended 6-field cron expression:
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// "30 * * * * *" means at 30 seconds past every minute.
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scheduler.AddTask(ctx, &mq.Task{ID: "Cron 6-field Task"},
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mq.WithScheduleSpec("30 * * * * *"),
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mq.WithRecurring(),
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)
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// -------------------------------
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// Example Task Enqueuing (Immediate Tasks)
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// -------------------------------
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// These tasks are enqueued immediately into the pool queue.
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pool.EnqueueTask(context.Background(), &mq.Task{ID: "Immediate Task 1"}, 1)
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time.Sleep(1 * time.Second)
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pool.EnqueueTask(context.Background(), &mq.Task{ID: "Immediate Task 2"}, 5)
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time.Sleep(10 * time.Minute)
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// Remove scheduled tasks after demonstration.
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scheduler.RemoveTask("Every 30 Seconds Task")
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scheduler.RemoveTask("Every Minute Task")
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scheduler.RemoveTask("Daily Task")
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scheduler.RemoveTask("Weekly Task")
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scheduler.RemoveTask("Monthly Task")
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scheduler.RemoveTask("Yearly Task")
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scheduler.RemoveTask("Cron 5-field Task")
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scheduler.RemoveTask("Cron 6-field Task")
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scheduler.Close()
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// Retrieve metrics, then stop the pool.
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fmt.Println(pool.FormattedMetrics())
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}
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