/
worker.go
53 lines (46 loc) · 988 Bytes
/
worker.go
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package tasks
import (
"context"
"log"
"time"
"github.com/pkg/errors"
)
type Worker struct {
traceName string
callback Callback
storage Storage
getCurrentTime CurrentTimeResolver
logger *log.Logger
}
func NewWorker(
callback Callback,
storage Storage,
getCurrentTime CurrentTimeResolver,
logger *log.Logger,
) *Worker {
return &Worker{
callback: callback,
storage: storage,
getCurrentTime: getCurrentTime,
logger: logger,
}
}
func (rcv *Worker) Do(ctx context.Context, ch <-chan *Task) {
for task := range ch {
rcv.waitForExecutionWindow(task, 100*time.Millisecond)
err := rcv.callback(ctx, task)
if err == nil {
_ = rcv.storage.RemoveBackup(ctx, task.ID)
} else {
rcv.logger.Print(errors.Wrap(err, "evaluate task"))
}
}
}
func (rcv *Worker) waitForExecutionWindow(task *Task, delay time.Duration) {
for {
if task.Time.Sub(rcv.getCurrentTime()) <= 0 {
break
}
time.Sleep(delay)
}
}