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Merge pull request #81279 from feiskyer/fix-precondition-cancel

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Fix Azure client requests stuck issues on http.StatusTooManyRequests
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Kubernetes Prow Robot 2019-08-13 12:30:21 -07:00 committed by GitHub
commit 54b28ab60c
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1 changed files with 15 additions and 0 deletions
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15
staging/src/k8s.io/legacy-cloud-providers/azure/azure.go
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@ -20,6 +20,7 @@ import (
"fmt"
"io"
"io/ioutil"
"net/http"
"strings"
"sync"
"time"
@ -238,6 +239,20 @@ type Cloud struct {
}
func init() {
// In go-autorest SDK https://github.com/Azure/go-autorest/blob/master/autorest/sender.go#L258-L287,
// if ARM returns http.StatusTooManyRequests, the sender doesn't increase the retry attempt count,
// hence the Azure clients will keep retrying forever until it get a status code other than 429.
// So we explicitly removes http.StatusTooManyRequests from autorest.StatusCodesForRetry.
// Refer https://github.com/Azure/go-autorest/issues/398.
// TODO(feiskyer): Use autorest.SendDecorator to customize the retry policy when new Azure SDK is available.
statusCodesForRetry := make([]int, 0)
for _, code := range autorest.StatusCodesForRetry {
if code != http.StatusTooManyRequests {
statusCodesForRetry = append(statusCodesForRetry, code)
}
}
autorest.StatusCodesForRetry = statusCodesForRetry
cloudprovider.RegisterCloudProvider(CloudProviderName, NewCloud)
}