|
| 1 | +/* |
| 2 | +Copyright 2017 The Kubernetes 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 v1 |
| 18 | + |
| 19 | +import ( |
| 20 | + "fmt" |
| 21 | + |
| 22 | + rbacv1 "k8s.io/api/rbac/v1" |
| 23 | + |
| 24 | + metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" |
| 25 | +) |
| 26 | + |
| 27 | +// +k8s:deepcopy-gen=false |
| 28 | +// PolicyRuleBuilder let's us attach methods. A no-no for API types. |
| 29 | +// We use it to construct rules in code. It's more compact than trying to write them |
| 30 | +// out in a literal and allows us to perform some basic checking during construction |
| 31 | +type PolicyRuleBuilder struct { |
| 32 | + PolicyRule rbacv1.PolicyRule `protobuf:"bytes,1,opt,name=policyRule"` |
| 33 | +} |
| 34 | + |
| 35 | +func NewRule(verbs ...string) *PolicyRuleBuilder { |
| 36 | + return &PolicyRuleBuilder{ |
| 37 | + PolicyRule: rbacv1.PolicyRule{Verbs: verbs}, |
| 38 | + } |
| 39 | +} |
| 40 | + |
| 41 | +func (r *PolicyRuleBuilder) Groups(groups ...string) *PolicyRuleBuilder { |
| 42 | + r.PolicyRule.APIGroups = append(r.PolicyRule.APIGroups, groups...) |
| 43 | + return r |
| 44 | +} |
| 45 | + |
| 46 | +func (r *PolicyRuleBuilder) Resources(resources ...string) *PolicyRuleBuilder { |
| 47 | + r.PolicyRule.Resources = append(r.PolicyRule.Resources, resources...) |
| 48 | + return r |
| 49 | +} |
| 50 | + |
| 51 | +func (r *PolicyRuleBuilder) Names(names ...string) *PolicyRuleBuilder { |
| 52 | + r.PolicyRule.ResourceNames = append(r.PolicyRule.ResourceNames, names...) |
| 53 | + return r |
| 54 | +} |
| 55 | + |
| 56 | +func (r *PolicyRuleBuilder) URLs(urls ...string) *PolicyRuleBuilder { |
| 57 | + r.PolicyRule.NonResourceURLs = append(r.PolicyRule.NonResourceURLs, urls...) |
| 58 | + return r |
| 59 | +} |
| 60 | + |
| 61 | +func (r *PolicyRuleBuilder) RuleOrDie() rbacv1.PolicyRule { |
| 62 | + ret, err := r.Rule() |
| 63 | + if err != nil { |
| 64 | + panic(err) |
| 65 | + } |
| 66 | + return ret |
| 67 | +} |
| 68 | + |
| 69 | +func (r *PolicyRuleBuilder) Rule() (rbacv1.PolicyRule, error) { |
| 70 | + if len(r.PolicyRule.Verbs) == 0 { |
| 71 | + return rbacv1.PolicyRule{}, fmt.Errorf("verbs are required: %#v", r.PolicyRule) |
| 72 | + } |
| 73 | + |
| 74 | + switch { |
| 75 | + case len(r.PolicyRule.NonResourceURLs) > 0: |
| 76 | + if len(r.PolicyRule.APIGroups) != 0 || len(r.PolicyRule.Resources) != 0 || len(r.PolicyRule.ResourceNames) != 0 { |
| 77 | + return rbacv1.PolicyRule{}, fmt.Errorf("non-resource rule may not have apiGroups, resources, or resourceNames: %#v", r.PolicyRule) |
| 78 | + } |
| 79 | + case len(r.PolicyRule.Resources) > 0: |
| 80 | + if len(r.PolicyRule.NonResourceURLs) != 0 { |
| 81 | + return rbacv1.PolicyRule{}, fmt.Errorf("resource rule may not have nonResourceURLs: %#v", r.PolicyRule) |
| 82 | + } |
| 83 | + if len(r.PolicyRule.APIGroups) == 0 { |
| 84 | + // this a common bug |
| 85 | + return rbacv1.PolicyRule{}, fmt.Errorf("resource rule must have apiGroups: %#v", r.PolicyRule) |
| 86 | + } |
| 87 | + default: |
| 88 | + return rbacv1.PolicyRule{}, fmt.Errorf("a rule must have either nonResourceURLs or resources: %#v", r.PolicyRule) |
| 89 | + } |
| 90 | + |
| 91 | + return r.PolicyRule, nil |
| 92 | +} |
| 93 | + |
| 94 | +// +k8s:deepcopy-gen=false |
| 95 | +// ClusterRoleBindingBuilder let's us attach methods. A no-no for API types. |
| 96 | +// We use it to construct bindings in code. It's more compact than trying to write them |
| 97 | +// out in a literal. |
| 98 | +type ClusterRoleBindingBuilder struct { |
| 99 | + ClusterRoleBinding rbacv1.ClusterRoleBinding `protobuf:"bytes,1,opt,name=clusterRoleBinding"` |
| 100 | +} |
| 101 | + |
| 102 | +func NewClusterBinding(clusterRoleName string) *ClusterRoleBindingBuilder { |
| 103 | + return &ClusterRoleBindingBuilder{ |
| 104 | + ClusterRoleBinding: rbacv1.ClusterRoleBinding{ |
| 105 | + ObjectMeta: metav1.ObjectMeta{Name: clusterRoleName}, |
| 106 | + RoleRef: rbacv1.RoleRef{ |
| 107 | + APIGroup: GroupName, |
| 108 | + Kind: "ClusterRole", |
| 109 | + Name: clusterRoleName, |
| 110 | + }, |
| 111 | + }, |
| 112 | + } |
| 113 | +} |
| 114 | + |
| 115 | +func (r *ClusterRoleBindingBuilder) Groups(groups ...string) *ClusterRoleBindingBuilder { |
| 116 | + for _, group := range groups { |
| 117 | + r.ClusterRoleBinding.Subjects = append(r.ClusterRoleBinding.Subjects, rbacv1.Subject{Kind: rbacv1.GroupKind, Name: group}) |
| 118 | + } |
| 119 | + return r |
| 120 | +} |
| 121 | + |
| 122 | +func (r *ClusterRoleBindingBuilder) Users(users ...string) *ClusterRoleBindingBuilder { |
| 123 | + for _, user := range users { |
| 124 | + r.ClusterRoleBinding.Subjects = append(r.ClusterRoleBinding.Subjects, rbacv1.Subject{Kind: rbacv1.UserKind, Name: user}) |
| 125 | + } |
| 126 | + return r |
| 127 | +} |
| 128 | + |
| 129 | +func (r *ClusterRoleBindingBuilder) SAs(namespace string, serviceAccountNames ...string) *ClusterRoleBindingBuilder { |
| 130 | + for _, saName := range serviceAccountNames { |
| 131 | + r.ClusterRoleBinding.Subjects = append(r.ClusterRoleBinding.Subjects, rbacv1.Subject{Kind: rbacv1.ServiceAccountKind, Namespace: namespace, Name: saName}) |
| 132 | + } |
| 133 | + return r |
| 134 | +} |
| 135 | + |
| 136 | +func (r *ClusterRoleBindingBuilder) BindingOrDie() rbacv1.ClusterRoleBinding { |
| 137 | + ret, err := r.Binding() |
| 138 | + if err != nil { |
| 139 | + panic(err) |
| 140 | + } |
| 141 | + return ret |
| 142 | +} |
| 143 | + |
| 144 | +func (r *ClusterRoleBindingBuilder) Binding() (rbacv1.ClusterRoleBinding, error) { |
| 145 | + if len(r.ClusterRoleBinding.Subjects) == 0 { |
| 146 | + return rbacv1.ClusterRoleBinding{}, fmt.Errorf("subjects are required: %#v", r.ClusterRoleBinding) |
| 147 | + } |
| 148 | + |
| 149 | + return r.ClusterRoleBinding, nil |
| 150 | +} |
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