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extract.go
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extract.go
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// Copyright 2021 Flant JSC
//
// 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 filter
import (
"fmt"
"github.com/flant/addon-operator/pkg/module_manager/go_hook"
"github.com/flant/addon-operator/sdk"
v1core "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
)
func KeyFromConfigMap(key string) func(obj *unstructured.Unstructured) (go_hook.FilterResult, error) {
return func(obj *unstructured.Unstructured) (go_hook.FilterResult, error) {
var cm v1core.ConfigMap
err := sdk.FromUnstructured(obj, &cm)
if err != nil {
return "", err
}
val, ok := cm.Data[key]
if !ok {
return "", fmt.Errorf("no key %q in configmap %s", key, obj.GetName())
}
return val, nil
}
}