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Handle app-configs and config for dynamic plugins in Custom Resource (#…
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,139 @@ | ||
| // | ||
| // Copyright (c) 2023 Red Hat, Inc. | ||
| // 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 controller | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
|
|
||
| bs "backstage.io/backstage-operator/api/v1alpha1" | ||
| appsv1 "k8s.io/api/apps/v1" | ||
| v1 "k8s.io/api/core/v1" | ||
| "k8s.io/apimachinery/pkg/types" | ||
| "k8s.io/utils/pointer" | ||
| ) | ||
|
|
||
| type appConfigData struct { | ||
| ref string | ||
| files []string | ||
| } | ||
|
|
||
| func (r *BackstageReconciler) appConfigsToVolumes(backstage bs.Backstage) (result []v1.Volume) { | ||
| for _, appConfig := range backstage.Spec.AppConfigs { | ||
| var volumeSource v1.VolumeSource | ||
| switch appConfig.Kind { | ||
| case "ConfigMap": | ||
| volumeSource.ConfigMap = &v1.ConfigMapVolumeSource{ | ||
| DefaultMode: pointer.Int32(420), | ||
| LocalObjectReference: v1.LocalObjectReference{Name: appConfig.Name}, | ||
| } | ||
| case "Secret": | ||
| volumeSource.Secret = &v1.SecretVolumeSource{ | ||
| DefaultMode: pointer.Int32(420), | ||
| SecretName: appConfig.Name, | ||
| } | ||
| } | ||
| result = append(result, | ||
| v1.Volume{ | ||
| Name: appConfig.Name, | ||
| VolumeSource: volumeSource, | ||
| }, | ||
| ) | ||
| } | ||
|
|
||
| return result | ||
| } | ||
|
|
||
| func (r *BackstageReconciler) addAppConfigsVolumeMounts(ctx context.Context, backstage bs.Backstage, ns string, deployment *appsv1.Deployment) error { | ||
| appConfigFilenamesList, err := r.extractAppConfigFileNames(ctx, backstage, ns) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| for i, c := range deployment.Spec.Template.Spec.Containers { | ||
| if c.Name == _defaultBackstageMainContainerName { | ||
| for _, appConfigFilenames := range appConfigFilenamesList { | ||
| deployment.Spec.Template.Spec.Containers[i].VolumeMounts = append(deployment.Spec.Template.Spec.Containers[i].VolumeMounts, | ||
| v1.VolumeMount{ | ||
| Name: appConfigFilenames.ref, | ||
| MountPath: fmt.Sprintf("%s/%s", _containersWorkingDir, appConfigFilenames.ref), | ||
| }) | ||
| } | ||
| break | ||
| } | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| func (r *BackstageReconciler) addAppConfigsContainerArgs(ctx context.Context, backstage bs.Backstage, ns string, deployment *appsv1.Deployment) error { | ||
| appConfigFilenamesList, err := r.extractAppConfigFileNames(ctx, backstage, ns) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| for i, c := range deployment.Spec.Template.Spec.Containers { | ||
| if c.Name == _defaultBackstageMainContainerName { | ||
| for _, appConfigFilenames := range appConfigFilenamesList { | ||
| // Args | ||
| for _, fileName := range appConfigFilenames.files { | ||
| deployment.Spec.Template.Spec.Containers[i].Args = | ||
| append(deployment.Spec.Template.Spec.Containers[i].Args, "--config", | ||
| fmt.Sprintf("%s/%s/%s", _containersWorkingDir, appConfigFilenames.ref, fileName)) | ||
| } | ||
| } | ||
| break | ||
| } | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| // extractAppConfigFileNames returns a mapping of app-config object name and the list of files in it. | ||
| // We intentionally do not return a Map, to preserve the iteration order of the AppConfigs in the Custom Resource, | ||
| // even though we can't guarantee the iteration order of the files listed inside each ConfigMap or Secret. | ||
| func (r *BackstageReconciler) extractAppConfigFileNames(ctx context.Context, backstage bs.Backstage, ns string) ([]appConfigData, error) { | ||
| var result []appConfigData | ||
| for _, appConfig := range backstage.Spec.AppConfigs { | ||
| var files []string | ||
| switch appConfig.Kind { | ||
| case "ConfigMap": | ||
| cm := v1.ConfigMap{} | ||
| if err := r.Get(ctx, types.NamespacedName{Name: appConfig.Name, Namespace: ns}, &cm); err != nil { | ||
| return nil, err | ||
| } | ||
| for filename := range cm.Data { | ||
| // Bear in mind that iteration order over this map is not guaranteed by Go | ||
| files = append(files, filename) | ||
| } | ||
| for filename := range cm.BinaryData { | ||
| // Bear in mind that iteration order over this map is not guaranteed by Go | ||
| files = append(files, filename) | ||
| } | ||
| case "Secret": | ||
| sec := v1.Secret{} | ||
| if err := r.Get(ctx, types.NamespacedName{Name: appConfig.Name, Namespace: ns}, &sec); err != nil { | ||
| return nil, err | ||
| } | ||
| for filename := range sec.Data { | ||
| // Bear in mind that iteration order over this map is not guaranteed by Go | ||
| files = append(files, filename) | ||
| } | ||
| } | ||
| result = append(result, appConfigData{ | ||
| ref: appConfig.Name, | ||
| files: files, | ||
| }) | ||
| } | ||
| return result, nil | ||
| } |
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