unistack-org/cloudinit
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Adds sleep cap to exponential backoff so it does not go too high

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This commit is contained in:
Camilo Aguilar 2014-05-15 13:04:37 -04:00
parent 31f61d7531
commit ff70a60fbc
1 changed files with 6 additions and 0 deletions
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6
datasource/datasource.go
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@ -8,6 +8,8 @@ import (
"time" "time"
) )
const maxTimeout = time.Second * 5
type Datasource interface { type Datasource interface {
Fetch() ([]byte, error) Fetch() ([]byte, error)
Type() string Type() string
@ -40,6 +42,10 @@ func getWithExponentialBackoff(url string) (*http.Response, error) {
return resp, nil return resp, nil
} }
duration := time.Millisecond * time.Duration((math.Pow(float64(2), float64(i)) * 100)) duration := time.Millisecond * time.Duration((math.Pow(float64(2), float64(i)) * 100))
if duration > maxTimeout {
duration = maxTimeout
}
log.Printf("unable to fetch user-data from %s, try again in %s", url, duration) log.Printf("unable to fetch user-data from %s, try again in %s", url, duration)
time.Sleep(duration) time.Sleep(duration)
} }