37 lines
1.1 KiB
Go
37 lines
1.1 KiB
Go
/*
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Copyright 2021 The cert-manager Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package util
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import (
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"fmt"
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"k8s.io/apimachinery/pkg/util/rand"
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)
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// RandomSubdomain returns a new subdomain domain of the domain suffix.
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// e.g., abcd.example.com.
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func RandomSubdomain(domain string) string {
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return RandomSubdomainLength(domain, 5)
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}
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// RandomSubdomainLength returns a new subdomain domain of the domain suffix, where the
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// subdomain has `length` number of characters.
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// e.g., abcdefghij.example.com.
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func RandomSubdomainLength(domain string, length int) string {
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return fmt.Sprintf("%s.%s", rand.String(length), domain)
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}
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