/
controller.go
90 lines (78 loc) · 3.54 KB
/
controller.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
88
89
90
// Copyright (c) 2019 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
//
// 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 extension
import (
"time"
extensionspredicate "github.com/gardener/gardener/extensions/pkg/predicate"
extensionsv1alpha1 "github.com/gardener/gardener/pkg/apis/extensions/v1alpha1"
"github.com/gardener/gardener/pkg/controllerutils/mapper"
"sigs.k8s.io/controller-runtime/pkg/controller"
"sigs.k8s.io/controller-runtime/pkg/handler"
"sigs.k8s.io/controller-runtime/pkg/manager"
"sigs.k8s.io/controller-runtime/pkg/predicate"
"sigs.k8s.io/controller-runtime/pkg/source"
)
const (
// FinalizerPrefix is the prefix name of the finalizer written by this controller.
FinalizerPrefix = "extensions.gardener.cloud"
)
// AddArgs are arguments for adding an Extension resources controller to a manager.
type AddArgs struct {
// Actuator is an Extension resource actuator.
Actuator Actuator
// Name is the name of the controller.
Name string
// FinalizerSuffix is the suffix for the finalizer name.
FinalizerSuffix string
// ControllerOptions are the controller options used for creating a controller.
// The options.Reconciler is always overridden with a reconciler created from the
// given actuator.
ControllerOptions controller.Options
// Predicates are the predicates to use.
Predicates []predicate.Predicate
// Resync determines the requeue interval.
Resync time.Duration
// Type is the type of the resource considered for reconciliation.
Type string
// IgnoreOperationAnnotation specifies whether to ignore the operation annotation or not.
// If the annotation is not ignored, the extension controller will only reconcile
// with a present operation annotation typically set during a reconcile (e.g in the maintenance time) by the Gardenlet
IgnoreOperationAnnotation bool
}
// Add adds an Extension controller to the given manager using the given AddArgs.
func Add(mgr manager.Manager, args AddArgs) error {
args.ControllerOptions.Reconciler = NewReconciler(args)
args.ControllerOptions.RecoverPanic = true
return add(mgr, args)
}
// DefaultPredicates returns the default predicates for an extension reconciler.
func DefaultPredicates(ignoreOperationAnnotation bool) []predicate.Predicate {
return extensionspredicate.DefaultControllerPredicates(ignoreOperationAnnotation, extensionspredicate.ShootNotFailedPredicate())
}
func add(mgr manager.Manager, args AddArgs) error {
ctrl, err := controller.New(args.Name, mgr, args.ControllerOptions)
if err != nil {
return err
}
predicates := extensionspredicate.AddTypePredicate(args.Predicates, args.Type)
if args.IgnoreOperationAnnotation {
if err := ctrl.Watch(
&source.Kind{Type: &extensionsv1alpha1.Cluster{}},
mapper.EnqueueRequestsFrom(ClusterToExtensionMapper(predicates...), mapper.UpdateWithNew),
); err != nil {
return err
}
}
return ctrl.Watch(&source.Kind{Type: &extensionsv1alpha1.Extension{}}, &handler.EnqueueRequestForObject{}, predicates...)
}