/
util.go
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/
util.go
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// Copyright (c) 2019 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file
//
// 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 util
import (
"context"
"encoding/json"
"github.com/gardener/gardener/pkg/utils"
"k8s.io/apimachinery/pkg/runtime"
"sigs.k8s.io/controller-runtime/pkg/client"
)
// ContextFromStopChannel creates a new context from a given stop channel.
func ContextFromStopChannel(stopCh <-chan struct{}) context.Context {
ctx, cancel := context.WithCancel(context.Background())
go func() {
defer cancel()
<-stopCh
}()
return ctx
}
// ComputeChecksum computes a SHA256 checksum for the give map.
func ComputeChecksum(data interface{}) string {
jsonString, err := json.Marshal(data)
if err != nil {
return ""
}
return utils.ComputeSHA256Hex(jsonString)
}
// ObjectName returns the name of the given object in the format <namespace>/<name>
func ObjectName(obj runtime.Object) string {
k, err := client.ObjectKeyFromObject(obj)
if err != nil {
return "/"
}
return k.String()
}
// Use can be used to mark go elements as used to temporaryly avoid compiler
// errors due to unused elements.
func Use(_ ...interface{}) {}