mirror of
https://gitee.com/milvus-io/milvus.git
synced 2024-12-05 05:18:52 +08:00
46 lines
1.2 KiB
Go
46 lines
1.2 KiB
Go
// Copyright (C) 2019-2020 Zilliz. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software distributed under the License
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// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
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// or implied. See the License for the specific language governing permissions and limitations under the License.
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package funcutil
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import (
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"fmt"
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"math/rand"
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"time"
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)
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var r *rand.Rand = nil
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func init() {
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r = rand.New(rand.NewSource(time.Now().UnixNano()))
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}
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var letterRunes = []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ")
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// RandomString returns a batch of random string
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func RandomString(n int) string {
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b := make([]rune, n)
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for i := range b {
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b[i] = letterRunes[r.Intn(len(letterRunes))]
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}
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return string(b)
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}
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// GenRandomStr generates a random string.
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func GenRandomStr() string {
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l := rand.Uint64()%10 + 1
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b := make([]byte, l)
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if _, err := rand.Read(b); err != nil {
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return ""
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}
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return fmt.Sprintf("%X", b)
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}
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