github.com/zsuzhengdu/helm@v3.0.0-beta.3+incompatible/pkg/action/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 action
    18  
    19  import (
    20  	"strings"
    21  
    22  	"helm.sh/helm/pkg/releaseutil"
    23  )
    24  
    25  // resourcePolicyAnno is the annotation name for a resource policy
    26  const resourcePolicyAnno = "helm.sh/resource-policy"
    27  
    28  // keepPolicy is the resource policy type for keep
    29  //
    30  // This resource policy type allows resources to skip being deleted
    31  //   during an uninstallRelease action.
    32  const keepPolicy = "keep"
    33  
    34  func filterManifestsToKeep(manifests []releaseutil.Manifest) (keep, remaining []releaseutil.Manifest) {
    35  	for _, m := range manifests {
    36  		if m.Head.Metadata == nil || m.Head.Metadata.Annotations == nil || len(m.Head.Metadata.Annotations) == 0 {
    37  			remaining = append(remaining, m)
    38  			continue
    39  		}
    40  
    41  		resourcePolicyType, ok := m.Head.Metadata.Annotations[resourcePolicyAnno]
    42  		if !ok {
    43  			remaining = append(remaining, m)
    44  			continue
    45  		}
    46  
    47  		resourcePolicyType = strings.ToLower(strings.TrimSpace(resourcePolicyType))
    48  		if resourcePolicyType == keepPolicy {
    49  			keep = append(keep, m)
    50  		}
    51  
    52  	}
    53  	return keep, remaining
    54  }