/
configmap.go
120 lines (101 loc) · 2.71 KB
/
configmap.go
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// Copyright 2020 Nokia
// Licensed under the Apache License 2.0.
// SPDX-License-Identifier: Apache-2.0
package controllers
import (
"context"
"encoding/json"
"strings"
"github.com/nuagenetworks/nuage-network-operator/controllers/names"
corev1 "k8s.io/api/core/v1"
apierrors "k8s.io/apimachinery/pkg/api/errors"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/types"
)
var certConfig = types.NamespacedName{
Namespace: names.Namespace,
Name: names.NuageCertConfig,
}
var monitConfig = types.NamespacedName{
Namespace: names.Namespace,
Name: names.NuageMonitorConfig,
}
var releaseConfig = types.NamespacedName{
Namespace: names.Namespace,
Name: names.NuageReleaseConfig,
}
//CreateConfigMap creates a config map on api server
func (r *NuageCNIConfigReconciler) CreateConfigMap(nsn types.NamespacedName, data string) error {
cm := &corev1.ConfigMap{
TypeMeta: metav1.TypeMeta{
APIVersion: "v1",
Kind: "ConfigMap",
},
ObjectMeta: metav1.ObjectMeta{
Name: nsn.Name,
Namespace: nsn.Namespace,
},
Data: map[string]string{"applied": data},
}
obj := &corev1.ConfigMap{
TypeMeta: metav1.TypeMeta{
APIVersion: "v1",
Kind: "ConfigMap",
},
ObjectMeta: metav1.ObjectMeta{
Name: nsn.Name,
Namespace: nsn.Namespace,
},
}
err := r.Client.Get(context.TODO(), nsn, obj)
if err != nil && strings.Contains(err.Error(), "not found") {
err = r.Client.Create(context.TODO(), cm)
if err != nil {
return err
}
return nil
} else if err != nil && !strings.Contains(err.Error(), "already exists") {
return err
}
obj.Data = map[string]string{"applied": data}
err = r.Client.Update(context.TODO(), obj)
if err != nil {
return err
}
return nil
}
//GetConfigMap get a config map from api server
func (r *NuageCNIConfigReconciler) GetConfigMap(nsn types.NamespacedName) (*corev1.ConfigMap, error) {
cm := &corev1.ConfigMap{}
err := r.Client.Get(context.TODO(), nsn, cm)
if err != nil {
return nil, err
}
return cm, nil
}
//SaveConfigToServer stores the applied release config in api server
func (r *NuageCNIConfigReconciler) SaveConfigToServer(nsn types.NamespacedName, c interface{}) error {
app, err := json.Marshal(c)
if err != nil {
return err
}
err = r.CreateConfigMap(nsn, string(app))
if err != nil {
return err
}
return nil
}
//GetConfigFromServer fetches the stored config from server
func (r *NuageCNIConfigReconciler) GetConfigFromServer(nsn types.NamespacedName, c interface{}) error {
cm, err := r.GetConfigMap(nsn)
if err != nil && apierrors.IsNotFound(err) {
return nil
} else if err != nil {
return err
}
err = json.Unmarshal([]byte(cm.Data["applied"]), c)
if err != nil {
return err
}
return nil
}