github.com/greenpau/go-identity@v1.1.6/uuid.go (about)

     1  // Copyright 2020 Paul Greenberg greenpau@outlook.com
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package identity
    16  
    17  import (
    18  	"github.com/satori/go.uuid"
    19  	"math/rand"
    20  	"strings"
    21  )
    22  
    23  // NewID returns a random ID to be used for user identification.
    24  func NewID() string {
    25  	return uuid.NewV4().String()
    26  }
    27  
    28  // NewRandomString returns a random string.
    29  func NewRandomString(length int) string {
    30  	chars := []rune("abcdefghijklmnopqrstuvwxyz0123456789")
    31  	if length == 0 {
    32  		length = 32
    33  	}
    34  	var b strings.Builder
    35  	for i := 0; i < length; i++ {
    36  		b.WriteRune(chars[rand.Intn(len(chars))])
    37  	}
    38  	return b.String()
    39  }