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a419e0b693
* debugging * generic retry functionality; some additions to stringz.go * fiddling with magefile_sakila * added test lock function testh.Lock * bunch of linting, goimports, what not
41 lines
1.0 KiB
Go
41 lines
1.0 KiB
Go
// Package retry provides a mechanism to execute a function
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// with retry logic.
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package retry
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import (
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"context"
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"strings"
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"time"
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goretry "github.com/sethvargo/go-retry"
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)
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// Do implements retry using fibonacci backoff, up to a total
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// execution time of maxDuration. The retry impl is mostly handled
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// by the sethvargo/go-retry package. The matched args are tested
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// against the error returned by fn; if the error message contains
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// any of matches, retry can be performed.
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//
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// err = retry.Do(ctx, time.Second*5, loadDataFn, "not found", "timeout")
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func Do(ctx context.Context, maxDuration time.Duration, fn func() error, matches ...string) error {
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b := goretry.NewFibonacci(time.Millisecond * 100)
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b = goretry.WithJitterPercent(10, b)
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b = goretry.WithMaxDuration(maxDuration, b)
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return goretry.Do(ctx, b, func(_ context.Context) error {
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err := fn()
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if err == nil {
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return nil
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}
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errStr := err.Error()
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for _, match := range matches {
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if strings.Contains(errStr, match) {
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return goretry.RetryableError(err)
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}
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}
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return err
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})
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}
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