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hashutils.go
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/
hashutils.go
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// Copyright © 2022 Kaleido, Inc.
//
// SPDX-License-Identifier: Apache-2.0
//
// 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 fftypes
import (
"crypto/sha256"
)
func TypeNamespaceNameTopicHash(objType string, ns string, name string) string {
// Topic generation function for ordering anything with a type, namespace and name.
// Means all messages racing for this name will be consistently ordered by all parties.
h := sha256.New()
h.Write([]byte(objType))
h.Write([]byte(ns))
h.Write([]byte(name))
return HashResult(h).String()
}