/
checksums.go
60 lines (50 loc) · 1.68 KB
/
checksums.go
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// Copyright (c) 2020 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 utils
import (
"encoding/json"
"sort"
)
func computeChecksum(data map[string][]byte) string {
var keys []string
for k := range data {
keys = append(keys, k)
}
sort.Strings(keys)
var hash string
for _, k := range keys {
hash += ComputeSHA256Hex(data[k])
}
return ComputeSHA256Hex([]byte(hash))
}
// ComputeSecretChecksum computes the sha256 checksum of secret data.
func ComputeSecretChecksum(data map[string][]byte) string {
return computeChecksum(data)
}
// ComputeConfigMapChecksum computes the sha256 checksum of configmap data.
func ComputeConfigMapChecksum(data map[string]string) string {
out := make(map[string][]byte, len(data))
for k, v := range data {
out[k] = []byte(v)
}
return computeChecksum(out)
}
// ComputeChecksum computes a SHA256 checksum for the give map.
func ComputeChecksum(data interface{}) string {
jsonString, err := json.Marshal(data)
if err != nil {
return ""
}
return ComputeSHA256Hex(jsonString)
}