github.com/cloudposse/helm@v2.2.3+incompatible/cmd/helm/installer/uninstall.go (about)

     1  /*
     2  Copyright 2016 The Kubernetes Authors All rights reserved.
     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  	"strings"
    21  
    22  	"github.com/ghodss/yaml"
    23  
    24  	"k8s.io/kubernetes/pkg/api"
    25  	kerrors "k8s.io/kubernetes/pkg/api/errors"
    26  	"k8s.io/kubernetes/pkg/apis/extensions"
    27  	"k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset"
    28  	"k8s.io/kubernetes/pkg/client/clientset_generated/internalclientset/typed/core/internalversion"
    29  
    30  	"k8s.io/helm/pkg/kube"
    31  )
    32  
    33  // Uninstall uses kubernetes client to uninstall tiller
    34  func Uninstall(kubeClient internalclientset.Interface, kubeCmd *kube.Client, namespace string, verbose bool) error {
    35  	if _, err := kubeClient.Core().Services(namespace).Get("tiller-deploy"); err != nil {
    36  		if !kerrors.IsNotFound(err) {
    37  			return err
    38  		}
    39  	} else if err := deleteService(kubeClient.Core(), namespace); err != nil {
    40  		return err
    41  	}
    42  	if obj, err := kubeClient.Extensions().Deployments(namespace).Get("tiller-deploy"); err != nil {
    43  		if !kerrors.IsNotFound(err) {
    44  			return err
    45  		}
    46  	} else if err := deleteDeployment(kubeCmd, namespace, obj); err != nil {
    47  		return err
    48  	}
    49  	return nil
    50  }
    51  
    52  // deleteService deletes the Tiller Service resource
    53  func deleteService(client internalversion.ServicesGetter, namespace string) error {
    54  	return client.Services(namespace).Delete("tiller-deploy", &api.DeleteOptions{})
    55  }
    56  
    57  // deleteDeployment deletes the Tiller Deployment resource
    58  // We need to use the kubeCmd reaper instead of the kube API because GC for deployment dependents
    59  // is not yet supported at the k8s server level (<= 1.5)
    60  func deleteDeployment(kubeCmd *kube.Client, namespace string, obj *extensions.Deployment) error {
    61  	obj.Kind = "Deployment"
    62  	obj.APIVersion = "extensions/v1beta1"
    63  	buf, err := yaml.Marshal(obj)
    64  	if err != nil {
    65  		return err
    66  	}
    67  	reader := strings.NewReader(string(buf))
    68  	infos, err := kubeCmd.Build(namespace, reader)
    69  	if err != nil {
    70  		return err
    71  	}
    72  	for _, info := range infos {
    73  		reaper, err := kubeCmd.Reaper(info.Mapping)
    74  		if err != nil {
    75  			return err
    76  		}
    77  		err = reaper.Stop(info.Namespace, info.Name, 0, nil)
    78  		if err != nil {
    79  			return err
    80  		}
    81  	}
    82  	return nil
    83  }