github.com/amtisyAts/helm@v2.17.0+incompatible/cmd/helm/installer/uninstall.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 installer // import "k8s.io/helm/cmd/helm/installer"
    18  
    19  import (
    20  	apierrors "k8s.io/apimachinery/pkg/api/errors"
    21  	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
    22  	"k8s.io/client-go/kubernetes"
    23  	corev1 "k8s.io/client-go/kubernetes/typed/core/v1"
    24  )
    25  
    26  const (
    27  	deploymentName = "tiller-deploy"
    28  	serviceName    = "tiller-deploy"
    29  	secretName     = "tiller-secret"
    30  )
    31  
    32  // Uninstall uses Kubernetes client to uninstall Tiller.
    33  func Uninstall(client kubernetes.Interface, opts *Options) error {
    34  	if err := deleteService(client.CoreV1(), opts.Namespace); err != nil {
    35  		return err
    36  	}
    37  	if err := deleteDeployment(client, opts.Namespace); err != nil {
    38  		return err
    39  	}
    40  	return deleteSecret(client.CoreV1(), opts.Namespace)
    41  }
    42  
    43  // deleteService deletes the Tiller Service resource
    44  func deleteService(client corev1.ServicesGetter, namespace string) error {
    45  	err := client.Services(namespace).Delete(serviceName, &metav1.DeleteOptions{})
    46  	return ingoreNotFound(err)
    47  }
    48  
    49  // deleteDeployment deletes the Tiller Deployment resource
    50  func deleteDeployment(client kubernetes.Interface, namespace string) error {
    51  	policy := metav1.DeletePropagationBackground
    52  	err := client.AppsV1().Deployments(namespace).Delete(deploymentName, &metav1.DeleteOptions{
    53  		PropagationPolicy: &policy,
    54  	})
    55  	return ingoreNotFound(err)
    56  }
    57  
    58  // deleteSecret deletes the Tiller Secret resource
    59  func deleteSecret(client corev1.SecretsGetter, namespace string) error {
    60  	err := client.Secrets(namespace).Delete(secretName, &metav1.DeleteOptions{})
    61  	return ingoreNotFound(err)
    62  }
    63  
    64  func ingoreNotFound(err error) error {
    65  	if apierrors.IsNotFound(err) {
    66  		return nil
    67  	}
    68  	return err
    69  }