-
Notifications
You must be signed in to change notification settings - Fork 672
/
role.go
87 lines (79 loc) · 2.98 KB
/
role.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
// Copyright Project Contour Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package role
import (
"context"
"fmt"
equality "github.com/projectcontour/contour/internal/provisioner/equality"
"github.com/projectcontour/contour/internal/provisioner/labels"
"github.com/projectcontour/contour/internal/provisioner/model"
"github.com/projectcontour/contour/internal/provisioner/objects"
coordinationv1 "k8s.io/api/coordination/v1"
corev1 "k8s.io/api/core/v1"
rbacv1 "k8s.io/api/rbac/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"sigs.k8s.io/controller-runtime/pkg/client"
)
// EnsureControllerRole ensures a Role resource exists with the for the Contour
// controller.
func EnsureControllerRole(ctx context.Context, cli client.Client, name string, contour *model.Contour) error {
desired := desiredControllerRole(name, contour)
updater := func(ctx context.Context, cli client.Client, current, desired *rbacv1.Role) error {
_, err := updateRoleIfNeeded(ctx, cli, contour, current, desired)
return err
}
return objects.EnsureObject(ctx, cli, desired, updater, &rbacv1.Role{})
}
// desiredControllerRole constructs an instance of the desired Role resource with the
// provided ns/name and contour namespace/name for the owning contour labels for
// the Contour controller.
func desiredControllerRole(name string, contour *model.Contour) *rbacv1.Role {
role := &rbacv1.Role{
TypeMeta: metav1.TypeMeta{
Kind: "Role",
},
ObjectMeta: metav1.ObjectMeta{
Namespace: contour.Namespace,
Name: name,
Labels: model.CommonLabels(contour),
},
}
verbCGU := []string{"create", "get", "update"}
role.Rules = []rbacv1.PolicyRule{
{
Verbs: verbCGU,
APIGroups: []string{corev1.GroupName},
Resources: []string{"events"},
},
{
Verbs: verbCGU,
APIGroups: []string{coordinationv1.GroupName},
Resources: []string{"leases"},
},
}
return role
}
// updateRoleIfNeeded updates a Role resource if current does not match desired,
// using contour to verify the existence of owner labels.
func updateRoleIfNeeded(ctx context.Context, cli client.Client, contour *model.Contour, current, desired *rbacv1.Role) (*rbacv1.Role, error) {
if labels.Exist(current, model.OwnerLabels(contour)) {
role, updated := equality.RoleConfigChanged(current, desired)
if updated {
if err := cli.Update(ctx, role); err != nil {
return nil, fmt.Errorf("failed to update cluster role %s/%s: %w", role.Namespace, role.Name, err)
}
return role, nil
}
}
return current, nil
}