github.com/koderover/helm@v2.17.0+incompatible/pkg/tiller/resource_policy.go (about)

     1  /*
     2  Copyright The Helm Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8      http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package tiller
    18  
    19  import (
    20  	"bytes"
    21  	"strings"
    22  
    23  	"k8s.io/helm/pkg/kube"
    24  	"k8s.io/helm/pkg/tiller/environment"
    25  )
    26  
    27  func filterManifestsToKeep(manifests []Manifest) ([]Manifest, []Manifest) {
    28  	remaining := []Manifest{}
    29  	keep := []Manifest{}
    30  
    31  	for _, m := range manifests {
    32  		if m.Head.Metadata == nil || m.Head.Metadata.Annotations == nil || len(m.Head.Metadata.Annotations) == 0 {
    33  			remaining = append(remaining, m)
    34  			continue
    35  		}
    36  
    37  		if kube.ResourcePolicyIsKeep(m.Head.Metadata.Annotations) {
    38  			keep = append(keep, m)
    39  		} else {
    40  			remaining = append(remaining, m)
    41  		}
    42  	}
    43  	return keep, remaining
    44  }
    45  
    46  func summarizeKeptManifests(manifests []Manifest, kubeClient environment.KubeClient, namespace string) string {
    47  	var message string
    48  	for _, m := range manifests {
    49  		// check if m is in fact present from k8s client's POV.
    50  		output, err := kubeClient.Get(namespace, bytes.NewBufferString(m.Content))
    51  		if err != nil || strings.Contains(output, kube.MissingGetHeader) {
    52  			continue
    53  		}
    54  
    55  		details := "[" + m.Head.Kind + "] " + m.Head.Metadata.Name + "\n"
    56  		if message == "" {
    57  			message = "These resources were kept due to the resource policy:\n"
    58  		}
    59  		message = message + details
    60  	}
    61  	return message
    62  }