mirror of
https://github.com/optim-enterprises-bv/kubernetes.git
synced 2025-10-30 17:58:14 +00:00
9d816f1587
* Replace PollImmediate with PollUntilContextTimeout Signed-off-by: Omer Aplatony <omerap12@gmail.com> * Add context to RetryErrorCondition function Signed-off-by: Omer Aplatony <omerap12@gmail.com> * lint: fix error comparison in scale package Signed-off-by: Omer Aplatony <omerap12@gmail.com> * Fix RetryErrorCondition function signature Signed-off-by: Omer Aplatony <omerap12@gmail.com> * revert to if err statement Signed-off-by: Omer Aplatony <omerap12@gmail.com> --------- Signed-off-by: Omer Aplatony <omerap12@gmail.com>
63 lines
2.1 KiB
Go
63 lines
2.1 KiB
Go
/*
|
|
Copyright 2018 The Kubernetes Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package utils
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
"time"
|
|
|
|
"k8s.io/apimachinery/pkg/runtime/schema"
|
|
"k8s.io/apimachinery/pkg/util/wait"
|
|
scaleclient "k8s.io/client-go/scale"
|
|
"k8s.io/kubectl/pkg/scale"
|
|
)
|
|
|
|
const (
|
|
// Parameters for retrying updates/waits with linear backoff.
|
|
// TODO: Try to move this to exponential backoff by modifying scale.Scale().
|
|
updateRetryInterval = 5 * time.Second
|
|
updateRetryTimeout = 1 * time.Minute
|
|
waitRetryInterval = 5 * time.Second
|
|
waitRetryTimeout = 5 * time.Minute
|
|
)
|
|
|
|
func RetryErrorCondition(condition wait.ConditionWithContextFunc) wait.ConditionWithContextFunc {
|
|
return func(ctx context.Context) (bool, error) {
|
|
done, err := condition(ctx)
|
|
return done, err
|
|
}
|
|
}
|
|
|
|
func ScaleResourceWithRetries(scalesGetter scaleclient.ScalesGetter, namespace, name string, size uint, gvr schema.GroupVersionResource) error {
|
|
scaler := scale.NewScaler(scalesGetter)
|
|
preconditions := &scale.ScalePrecondition{
|
|
Size: -1,
|
|
ResourceVersion: "",
|
|
}
|
|
waitForReplicas := scale.NewRetryParams(waitRetryInterval, waitRetryTimeout)
|
|
cond := RetryErrorCondition(scale.ScaleCondition(scaler, preconditions, namespace, name, size, nil, gvr, false))
|
|
err := wait.PollUntilContextTimeout(context.Background(), updateRetryInterval, updateRetryTimeout, true, cond)
|
|
if err == nil {
|
|
err = scale.WaitForScaleHasDesiredReplicas(scalesGetter, gvr.GroupResource(), name, namespace, size, waitForReplicas)
|
|
}
|
|
if err != nil {
|
|
return fmt.Errorf("error while scaling %s to %d replicas: %v", name, size, err)
|
|
}
|
|
return nil
|
|
}
|