/
add.go
141 lines (127 loc) · 4.86 KB
/
add.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
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
// Copyright 2022 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 health
import (
"context"
"fmt"
"sync"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/apimachinery/pkg/types"
"k8s.io/client-go/util/workqueue"
"k8s.io/utils/clock"
"k8s.io/utils/ptr"
"sigs.k8s.io/controller-runtime/pkg/builder"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/cluster"
"sigs.k8s.io/controller-runtime/pkg/controller"
"sigs.k8s.io/controller-runtime/pkg/event"
"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/reconcile"
"sigs.k8s.io/controller-runtime/pkg/source"
resourcesv1alpha1 "github.com/gardener/gardener/pkg/apis/resources/v1alpha1"
"github.com/gardener/gardener/pkg/controllerutils/mapper"
"github.com/gardener/gardener/pkg/resourcemanager/controller/health/utils"
resourcemanagerpredicate "github.com/gardener/gardener/pkg/resourcemanager/predicate"
)
// ControllerName is the name of the controller.
const ControllerName = "health"
// AddToManager adds Reconciler to the given manager.
func (r *Reconciler) AddToManager(ctx context.Context, mgr manager.Manager, sourceCluster, targetCluster cluster.Cluster, clusterID string) error {
if r.SourceClient == nil {
r.SourceClient = sourceCluster.GetClient()
}
if r.TargetClient == nil {
r.TargetClient = targetCluster.GetClient()
}
if r.TargetScheme == nil {
r.TargetScheme = targetCluster.GetScheme()
}
if r.Clock == nil {
r.Clock = clock.RealClock{}
}
c, err := builder.
ControllerManagedBy(mgr).
Named(ControllerName).
WithOptions(controller.Options{
MaxConcurrentReconciles: ptr.Deref(r.Config.ConcurrentSyncs, 0),
}).
Watches(
&resourcesv1alpha1.ManagedResource{},
r.EnqueueCreateAndUpdate(),
builder.WithPredicates(
predicate.Or(
resourcemanagerpredicate.ClassChangedPredicate(),
// start health checks immediately after MR has been reconciled
resourcemanagerpredicate.ConditionStatusChanged(resourcesv1alpha1.ResourcesApplied, resourcemanagerpredicate.DefaultConditionChange),
resourcemanagerpredicate.NoLongerIgnored(),
),
resourcemanagerpredicate.NotIgnored(),
r.ClassFilter,
),
).
Build(r)
if err != nil {
return err
}
lock := sync.RWMutex{}
watchedObjectGVKs := make(map[schema.GroupVersionKind]struct{})
r.ensureWatchForGVK = func(gvk schema.GroupVersionKind, obj client.Object) error {
// fast-check: have we already added watch for this GVK?
lock.RLock()
if _, ok := watchedObjectGVKs[gvk]; ok {
lock.RUnlock()
return nil
}
lock.RUnlock()
// slow-check: two goroutines might concurrently call this func. If neither exited early, the first one added
// the watch and the second one should return now.
lock.Lock()
defer lock.Unlock()
if _, ok := watchedObjectGVKs[gvk]; ok {
return nil
}
_, metadataOnly := obj.(*metav1.PartialObjectMetadata)
c.GetLogger().Info("Adding new watch for GroupVersionKind", "groupVersionKind", gvk, "metadataOnly", metadataOnly)
if err := c.Watch(
source.Kind(targetCluster.GetCache(), obj),
mapper.EnqueueRequestsFrom(ctx, mgr.GetCache(), utils.MapToOriginManagedResource(clusterID), mapper.UpdateWithNew, c.GetLogger()),
utils.HealthStatusChanged(c.GetLogger()),
); err != nil {
return fmt.Errorf("error starting watch for GVK %s: %w", gvk.String(), err)
}
watchedObjectGVKs[gvk] = struct{}{}
return nil
}
return nil
}
// EnqueueCreateAndUpdate returns an event handler which only enqueues create and update events.
func (r *Reconciler) EnqueueCreateAndUpdate() handler.EventHandler {
return &handler.Funcs{
CreateFunc: func(_ context.Context, e event.CreateEvent, q workqueue.RateLimitingInterface) {
q.Add(reconcile.Request{NamespacedName: types.NamespacedName{
Name: e.Object.GetName(),
Namespace: e.Object.GetNamespace(),
}})
},
UpdateFunc: func(_ context.Context, e event.UpdateEvent, q workqueue.RateLimitingInterface) {
q.Add(reconcile.Request{NamespacedName: types.NamespacedName{
Name: e.ObjectNew.GetName(),
Namespace: e.ObjectNew.GetNamespace(),
}})
},
}
}