/
deployments.go
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/
deployments.go
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// Copyright (c) 2019 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
//
// 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 kubernetes
import (
"context"
"fmt"
"time"
"github.com/gardener/gardener/pkg/utils/retry"
appsv1 "k8s.io/api/apps/v1"
"sigs.k8s.io/controller-runtime/pkg/client"
)
// HasDeploymentRolloutCompleted checks for the number of updated &
// available replicas to be equal to the deployment's desired replicas count.
// Thus confirming a successful rollout of the deployment.
func HasDeploymentRolloutCompleted(ctx context.Context, c client.Client, namespace, name string) (bool, error) {
var (
deployment = &appsv1.Deployment{}
desiredReplicas = int32(0)
)
if err := c.Get(ctx, client.ObjectKey{Namespace: namespace, Name: name}, deployment); err != nil {
return retry.SevereError(err)
}
if deployment.Spec.Replicas != nil {
desiredReplicas = *deployment.Spec.Replicas
}
if deployment.Generation != deployment.Status.ObservedGeneration {
return retry.MinorError(fmt.Errorf("%q not observed at latest generation (%d/%d)", name,
deployment.Status.ObservedGeneration, deployment.Generation))
}
if deployment.Status.Replicas == desiredReplicas && deployment.Status.UpdatedReplicas == desiredReplicas && deployment.Status.AvailableReplicas == desiredReplicas {
return retry.Ok()
}
return retry.MinorError(fmt.Errorf("deployment %q currently has Updated/Available: %d/%d replicas. Desired: %d", name, deployment.Status.UpdatedReplicas, deployment.Status.AvailableReplicas, desiredReplicas))
}
// WaitUntilDeploymentRolloutIsComplete waits for the number of updated &
// available replicas to be equal to the deployment's desired replicas count.
// It keeps retrying until timeout
func WaitUntilDeploymentRolloutIsComplete(ctx context.Context, client client.Client, namespace string, name string, interval, timeout time.Duration) error {
return retry.UntilTimeout(ctx, interval, timeout, func(ctx context.Context) (done bool, err error) {
return HasDeploymentRolloutCompleted(ctx, client, namespace, name)
})
}