96 lines
3 KiB
Go
96 lines
3 KiB
Go
/*
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Copyright 2025 The Cozystack Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package cozylib
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import (
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"encoding/json"
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"fmt"
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"strings"
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corev1 "k8s.io/api/core/v1"
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apiextensionsv1 "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1"
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)
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const (
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// NamespaceAnnotationPrefix is the prefix for namespace annotations that should be copied to _namespace values
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NamespaceAnnotationPrefix = "namespace.cozystack.io/"
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)
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// ExtractNamespaceAnnotations extracts namespace.cozystack.io/* annotations from namespace
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// and returns them as a map with the prefix removed.
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// For example, "namespace.cozystack.io/host" becomes "host" in the returned map.
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func ExtractNamespaceAnnotations(ns *corev1.Namespace) map[string]string {
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result := make(map[string]string)
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prefix := NamespaceAnnotationPrefix
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if ns.Annotations == nil {
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return result
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}
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for key, value := range ns.Annotations {
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if strings.HasPrefix(key, prefix) {
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// Remove prefix and add to result
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namespaceKey := strings.TrimPrefix(key, prefix)
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result[namespaceKey] = value
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}
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}
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return result
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}
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// InjectNamespaceAnnotationsIntoValues injects namespace.cozystack.io/* annotations into _namespace (top-level) in values.
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// This function extracts annotations from the namespace and adds them to the _namespace field in the values JSON.
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// If namespace is nil or has no matching annotations, values are returned as-is.
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func InjectNamespaceAnnotationsIntoValues(values *apiextensionsv1.JSON, ns *corev1.Namespace) (*apiextensionsv1.JSON, error) {
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if ns == nil {
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return values, nil
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}
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// Extract namespace.cozystack.io/* annotations
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namespaceLabels := ExtractNamespaceAnnotations(ns)
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if len(namespaceLabels) == 0 {
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// No namespace annotations, return values as-is
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return values, nil
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}
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// Parse values
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var valuesMap map[string]interface{}
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if values != nil && len(values.Raw) > 0 {
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if err := json.Unmarshal(values.Raw, &valuesMap); err != nil {
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return nil, fmt.Errorf("failed to unmarshal values: %w", err)
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}
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} else {
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valuesMap = make(map[string]interface{})
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}
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// Convert namespaceLabels from map[string]string to map[string]interface{}
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namespaceLabelsMap := make(map[string]interface{})
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for k, v := range namespaceLabels {
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namespaceLabelsMap[k] = v
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}
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// Namespace annotations completely overwrite existing _namespace field (top-level)
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valuesMap["_namespace"] = namespaceLabelsMap
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// Marshal back to JSON
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mergedJSON, err := json.Marshal(valuesMap)
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if err != nil {
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return nil, fmt.Errorf("failed to marshal values with namespace annotations: %w", err)
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}
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return &apiextensionsv1.JSON{Raw: mergedJSON}, nil
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}
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