/
main.go
77 lines (69 loc) · 1.82 KB
/
main.go
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package main
import (
"context"
"gopkg.in/yaml.v3"
corev1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/client-go/tools/clientcmd"
"k8s.io/client-go/util/retry"
"sigs.k8s.io/controller-runtime/pkg/client"
ctrlutil "sigs.k8s.io/controller-runtime/pkg/controller/controllerutil"
cfginternal "github.com/kubeshop/botkube/internal/config"
"github.com/kubeshop/botkube/pkg/config"
)
const (
configMapName = "botkube-config-exporter"
configMapNamespace = "botkube"
)
func main() {
files, _, err := cfginternal.NewEnvProvider().Configs(context.Background())
if err != nil {
panic(err)
}
conf, _, err := config.LoadWithDefaults(files)
if err != nil {
panic(err)
}
yamlBytes, err := yaml.Marshal(conf)
if err != nil {
panic(err)
}
if err := createOrUpdateCM(context.Background(), yamlBytes); err != nil {
panic(err)
}
}
func createOrUpdateCM(ctx context.Context, config []byte) error {
k8sClient, err := newK8sClient()
if err != nil {
return err
}
cm := newCM()
return retry.RetryOnConflict(retry.DefaultRetry, func() error {
_, corErr := ctrlutil.CreateOrUpdate(ctx, k8sClient, cm, func() error {
cm.BinaryData = nil // remove data from previous approach, otherwise we may get error: 'Invalid value: "config.yaml": duplicate of key present in binaryData'
cm.Data = map[string]string{
"config.yaml": string(config),
}
return nil
})
return corErr
})
}
func newK8sClient() (client.Client, error) {
k8sConfig, err := clientcmd.BuildConfigFromFlags("", "")
if err != nil {
return nil, err
}
return client.New(k8sConfig, client.Options{})
}
func newCM() *corev1.ConfigMap {
return &corev1.ConfigMap{
ObjectMeta: metav1.ObjectMeta{
Name: configMapName,
Namespace: configMapNamespace,
Labels: map[string]string{
"app": configMapName,
},
},
}
}