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manager.go
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manager.go
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/*
* Copyright contributors to the Hyperledger Fabric Operator project
*
* SPDX-License-Identifier: Apache-2.0
*
* 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 configmap
import (
"context"
"fmt"
k8sclient "github.com/IBM-Blockchain/fabric-operator/pkg/k8s/controllerclient"
"github.com/IBM-Blockchain/fabric-operator/pkg/manager/resources"
"github.com/IBM-Blockchain/fabric-operator/pkg/operatorerrors"
"github.com/IBM-Blockchain/fabric-operator/pkg/util"
corev1 "k8s.io/api/core/v1"
k8serrors "k8s.io/apimachinery/pkg/api/errors"
v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/apimachinery/pkg/types"
"sigs.k8s.io/controller-runtime/pkg/client"
logf "sigs.k8s.io/controller-runtime/pkg/log"
)
var log = logf.Log.WithName("configmap_manager")
type Manager struct {
Client k8sclient.Client
Scheme *runtime.Scheme
ConfigMapFile string
Name string
Options map[string]interface{}
LabelsFunc func(v1.Object) map[string]string
OverrideFunc func(v1.Object, *corev1.ConfigMap, resources.Action, map[string]interface{}) error
}
func (m *Manager) GetName(instance v1.Object) string {
if m.Name != "" {
return fmt.Sprintf("%s-%s", instance.GetName(), m.Name)
}
return fmt.Sprintf("%s", instance.GetName())
}
func (m *Manager) Reconcile(instance v1.Object, update bool) error {
name := m.GetName(instance)
configMap := &corev1.ConfigMap{}
err := m.Client.Get(context.TODO(), types.NamespacedName{Name: name, Namespace: instance.GetNamespace()}, configMap)
if err != nil {
if k8serrors.IsNotFound(err) {
log.Info(fmt.Sprintf("Creating configmap '%s'", name))
configMap, err := m.GetConfigMapBasedOnCRFromFile(instance)
if err != nil {
return err
}
err = m.Client.Create(context.TODO(), configMap, k8sclient.CreateOption{
Owner: instance,
Scheme: m.Scheme,
})
if err != nil {
return err
}
return nil
}
return err
}
if update {
if m.OverrideFunc != nil {
log.Info(fmt.Sprintf("Updating configmap '%s'", name))
err := m.OverrideFunc(instance, configMap, resources.Update, m.Options)
if err != nil {
return err
}
err = m.Client.Update(context.TODO(), configMap, k8sclient.UpdateOption{
Owner: instance,
Scheme: m.Scheme,
})
if err != nil {
return err
}
return nil
}
}
// TODO: If needed, update logic for servie goes here
return nil
}
func (m *Manager) GetConfigMapBasedOnCRFromFile(instance v1.Object) (*corev1.ConfigMap, error) {
configMap, err := util.GetConfigMapFromFile(m.ConfigMapFile)
if err != nil {
log.Error(err, fmt.Sprintf("Error reading configmap configuration file: %s", m.ConfigMapFile))
return nil, err
}
configMap.Name = m.GetName(instance)
configMap.Namespace = instance.GetNamespace()
configMap.Labels = m.LabelsFunc(instance)
return m.BasedOnCR(instance, configMap)
}
func (m *Manager) BasedOnCR(instance v1.Object, configMap *corev1.ConfigMap) (*corev1.ConfigMap, error) {
if m.OverrideFunc != nil {
err := m.OverrideFunc(instance, configMap, resources.Create, m.Options)
if err != nil {
return nil, operatorerrors.New(operatorerrors.InvalidConfigMapCreateRequest, err.Error())
}
}
return configMap, nil
}
func (m *Manager) Get(instance v1.Object) (client.Object, error) {
if instance == nil {
return nil, nil // Instance has not been reconciled yet
}
name := m.GetName(instance)
cm := &corev1.ConfigMap{}
err := m.Client.Get(context.TODO(), types.NamespacedName{Name: name, Namespace: instance.GetNamespace()}, cm)
if err != nil {
return nil, err
}
return cm, nil
}
func (m *Manager) Exists(instance v1.Object) bool {
_, err := m.Get(instance)
if err != nil {
return false
}
return true
}
func (m *Manager) Delete(instance v1.Object) error {
cm, err := m.Get(instance)
if err != nil {
if !k8serrors.IsNotFound(err) {
return err
}
}
if cm == nil {
return nil
}
err = m.Client.Delete(context.TODO(), cm)
if err != nil {
if !k8serrors.IsNotFound(err) {
return err
}
}
return nil
}
func (m *Manager) CheckState(instance v1.Object) error {
// NO-OP
return nil
}
func (m *Manager) RestoreState(instance v1.Object) error {
// NO-OP
return nil
}
func (m *Manager) SetCustomName(name string) {
// NO-OP
}