generated from giantswarm/template-operator
/
reconciler.go
81 lines (66 loc) · 2.62 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
package promtailconfig
import (
"context"
"reflect"
"github.com/pkg/errors"
v1 "k8s.io/api/core/v1"
apimachineryerrors "k8s.io/apimachinery/pkg/api/errors"
"k8s.io/apimachinery/pkg/types"
loggedcluster "github.com/giantswarm/logging-operator/pkg/logged-cluster"
ctrl "sigs.k8s.io/controller-runtime"
"sigs.k8s.io/controller-runtime/pkg/client"
"sigs.k8s.io/controller-runtime/pkg/log"
)
// Reconciler implements a reconciler.Interface to handle
// Promtail config: extra promtail config defining what we want to retrieve.
type Reconciler struct {
client.Client
}
// ReconcileCreate ensures promtail config is created with the right credentials
func (r *Reconciler) ReconcileCreate(ctx context.Context, lc loggedcluster.Interface) (ctrl.Result, error) {
logger := log.FromContext(ctx)
logger.Info("promtailconfig create")
// Get desired config
desiredPromtailConfig, err := GeneratePromtailConfig(lc)
if err != nil {
logger.Info("promtailconfig - failed generating promtail config!", "error", err)
return ctrl.Result{}, errors.WithStack(err)
}
// Check if config already exists.
logger.Info("promtailconfig - getting", "namespace", desiredPromtailConfig.GetNamespace(), "name", desiredPromtailConfig.GetName())
var currentPromtailConfig v1.ConfigMap
err = r.Client.Get(ctx, types.NamespacedName{Name: desiredPromtailConfig.GetName(), Namespace: desiredPromtailConfig.GetNamespace()}, ¤tPromtailConfig)
if err != nil {
if apimachineryerrors.IsNotFound(err) {
logger.Info("promtailconfig not found, creating")
err = r.Client.Create(ctx, &desiredPromtailConfig)
if err != nil {
return ctrl.Result{}, errors.WithStack(err)
}
return ctrl.Result{}, nil
}
return ctrl.Result{}, errors.WithStack(err)
}
if !needUpdate(currentPromtailConfig, desiredPromtailConfig) {
logger.Info("promtailconfig up to date")
return ctrl.Result{}, nil
}
logger.Info("promtailconfig - updating")
err = r.Client.Update(ctx, &desiredPromtailConfig)
if err != nil {
return ctrl.Result{}, errors.WithStack(err)
}
logger.Info("promtailconfig - done")
return ctrl.Result{}, nil
}
// ReconcileDelete - Not much to do here when a cluster is deleted
func (r *Reconciler) ReconcileDelete(ctx context.Context, lc loggedcluster.Interface) (ctrl.Result, error) {
logger := log.FromContext(ctx)
logger.Info("promtailconfig delete")
// Don't do anything, we let observability-bundle do the cleanup when logging.enable=false
return ctrl.Result{}, nil
}
// needUpdate return true if current.Data and desired.Data do not match.
func needUpdate(current, desired v1.ConfigMap) bool {
return !reflect.DeepEqual(current.Data, desired.Data)
}