-
Notifications
You must be signed in to change notification settings - Fork 465
/
reconciler.go
123 lines (101 loc) · 4.27 KB
/
reconciler.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
// SPDX-FileCopyrightText: 2024 SAP SE or an SAP affiliate company and Gardener contributors
//
// SPDX-License-Identifier: Apache-2.0
package required
import (
"context"
"fmt"
"sync"
apierrors "k8s.io/apimachinery/pkg/api/errors"
"k8s.io/apimachinery/pkg/util/sets"
"k8s.io/utils/clock"
"k8s.io/utils/ptr"
"sigs.k8s.io/controller-runtime/pkg/client"
logf "sigs.k8s.io/controller-runtime/pkg/log"
"sigs.k8s.io/controller-runtime/pkg/reconcile"
gardencorev1beta1 "github.com/gardener/gardener/pkg/apis/core/v1beta1"
v1beta1helper "github.com/gardener/gardener/pkg/apis/core/v1beta1/helper"
"github.com/gardener/gardener/pkg/controllerutils"
"github.com/gardener/gardener/pkg/gardenlet/apis/config"
)
// Reconciler reconciles ControllerInstallations. It checks whether they are still required by using the
// <KindToRequiredTypes> map.
type Reconciler struct {
GardenClient client.Client
SeedClient client.Client
Config config.ControllerInstallationRequiredControllerConfiguration
Clock clock.Clock
SeedName string
Lock *sync.RWMutex
KindToRequiredTypes map[string]sets.Set[string]
}
// Reconcile performs the main reconciliation logic.
func (r *Reconciler) Reconcile(ctx context.Context, request reconcile.Request) (reconcile.Result, error) {
log := logf.FromContext(ctx)
ctx, cancel := controllerutils.GetMainReconciliationContext(ctx, controllerutils.DefaultReconciliationTimeout)
defer cancel()
controllerInstallation := &gardencorev1beta1.ControllerInstallation{}
if err := r.GardenClient.Get(ctx, request.NamespacedName, controllerInstallation); err != nil {
if apierrors.IsNotFound(err) {
log.V(1).Info("Object is gone, stop reconciling")
return reconcile.Result{}, nil
}
return reconcile.Result{}, fmt.Errorf("error retrieving object from store: %w", err)
}
controllerRegistration := &gardencorev1beta1.ControllerRegistration{}
if err := r.GardenClient.Get(ctx, client.ObjectKey{Name: controllerInstallation.Spec.RegistrationRef.Name}, controllerRegistration); err != nil {
return reconcile.Result{}, err
}
var (
allKindsCalculated = true
required *bool
requiredKindTypes = sets.New[string]()
message string
)
r.Lock.RLock()
for _, resource := range controllerRegistration.Spec.Resources {
requiredTypes, ok := r.KindToRequiredTypes[resource.Kind]
if !ok {
allKindsCalculated = false
continue
}
if requiredTypes.Has(resource.Type) {
required = ptr.To(true)
requiredKindTypes.Insert(fmt.Sprintf("%s/%s", resource.Kind, resource.Type))
}
}
r.Lock.RUnlock()
if required == nil {
if !allKindsCalculated {
// if required wasn't set yet then but not all kinds were calculated then the it's not possible to
// decide yet whether it's required or not
return reconcile.Result{}, nil
}
// if required wasn't set yet then but all kinds were calculated then the installation is no longer required
required = ptr.To(false)
message = "no extension objects exist in the seed having the kind/type combinations the controller is responsible for"
} else if *required {
message = fmt.Sprintf("extension objects still exist in the seed: %+v", requiredKindTypes.UnsortedList())
}
if err := updateControllerInstallationRequiredCondition(ctx, r.GardenClient, r.Clock, controllerInstallation, *required, message); err != nil {
return reconcile.Result{}, err
}
return reconcile.Result{}, nil
}
func updateControllerInstallationRequiredCondition(ctx context.Context, c client.StatusClient, clock clock.Clock, controllerInstallation *gardencorev1beta1.ControllerInstallation, required bool, message string) error {
var (
conditionRequired = v1beta1helper.GetOrInitConditionWithClock(clock, controllerInstallation.Status.Conditions, gardencorev1beta1.ControllerInstallationRequired)
status = gardencorev1beta1.ConditionTrue
reason = "ExtensionObjectsExist"
)
if !required {
status = gardencorev1beta1.ConditionFalse
reason = "NoExtensionObjects"
}
patch := client.StrategicMergeFrom(controllerInstallation.DeepCopy())
controllerInstallation.Status.Conditions = v1beta1helper.MergeConditions(
controllerInstallation.Status.Conditions,
v1beta1helper.UpdatedConditionWithClock(clock, conditionRequired, status, reason, message),
)
return c.Status().Patch(ctx, controllerInstallation, patch)
}