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checksums.go
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/
checksums.go
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// SPDX-FileCopyrightText: 2024 SAP SE or an SAP affiliate company and Gardener contributors
//
// SPDX-License-Identifier: Apache-2.0
package utils
import (
"encoding/json"
"slices"
)
func computeChecksum(data map[string][]byte) string {
keys := make([]string, 0, len(data))
for k := range data {
keys = append(keys, k)
}
slices.Sort(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 given data.
func ComputeChecksum(data interface{}) string {
jsonString, err := json.Marshal(data)
if err != nil {
return ""
}
return ComputeSHA256Hex(jsonString)
}