78 lines
2.2 KiB
Go
78 lines
2.2 KiB
Go
/*
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Copyright 2016 The Kubernetes Authors All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package tiller
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import (
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"bytes"
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"strings"
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"k8s.io/helm/pkg/kube"
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"k8s.io/helm/pkg/tiller/environment"
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)
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// resourcePolicyAnno is the annotation name for a resource policy
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const resourcePolicyAnno = "helm.sh/resource-policy"
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// keepPolicy is the resource policy type for keep
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//
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// This resource policy type allows resources to skip being deleted
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// during an uninstallRelease action.
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const keepPolicy = "keep"
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func filterManifestsToKeep(manifests []Manifest) ([]Manifest, []Manifest) {
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remaining := []Manifest{}
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keep := []Manifest{}
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for _, m := range manifests {
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if m.Head.Metadata == nil || m.Head.Metadata.Annotations == nil || len(m.Head.Metadata.Annotations) == 0 {
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remaining = append(remaining, m)
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continue
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}
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resourcePolicyType, ok := m.Head.Metadata.Annotations[resourcePolicyAnno]
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if !ok {
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remaining = append(remaining, m)
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continue
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}
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resourcePolicyType = strings.ToLower(strings.TrimSpace(resourcePolicyType))
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if resourcePolicyType == keepPolicy {
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keep = append(keep, m)
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}
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}
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return keep, remaining
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}
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func summarizeKeptManifests(manifests []Manifest, kubeClient environment.KubeClient, namespace string) string {
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var message string
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for _, m := range manifests {
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// check if m is in fact present from k8s client's POV.
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output, err := kubeClient.Get(namespace, bytes.NewBufferString(m.Content))
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if err != nil || strings.Contains(output, kube.MissingGetHeader) {
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continue
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}
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details := "[" + m.Head.Kind + "] " + m.Head.Metadata.Name + "\n"
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if message == "" {
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message = "These resources were kept due to the resource policy:\n"
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}
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message = message + details
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}
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return message
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}
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