Dmitry Sergeev
55 lines
909 B
Go
55 lines
909 B
Go
package playback
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import (
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"context"
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"time"
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)
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type attemptFunc func(context.Context) error
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type retryDecider func(error) bool
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type waitFunc func(context.Context, time.Duration) error
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func waitForRetry(ctx context.Context, delay time.Duration) error {
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timer := time.NewTimer(delay)
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defer timer.Stop()
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select {
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case <-timer.C:
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return nil
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case <-ctx.Done():
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return ctx.Err()
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}
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}
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func runWithRetry(
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ctx context.Context,
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policy RetryPolicy,
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attempt attemptFunc,
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shouldRetry retryDecider,
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wait waitFunc,
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) error {
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failedAttempts := 0
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for {
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err := attempt(ctx)
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if err == nil {
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return nil
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}
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if ctx.Err() != nil {
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return ctx.Err()
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}
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failedAttempts++
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if !shouldRetry(err) || !policy.canRetry(failedAttempts) {
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return err
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}
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if err := wait(ctx, policy.retryDelay(failedAttempts)); err != nil {
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if ctx.Err() != nil {
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return ctx.Err()
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}
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return err
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}
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}
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}
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