53 lines
1.1 KiB
Smarty
53 lines
1.1 KiB
Smarty
var dbNameRand *rand.Rand
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func initDBNameRand(input string) {
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sum := md5.Sum([]byte(input))
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var sumInt string
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for _, v := range sum {
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sumInt = sumInt + strconv.Itoa(int(v))
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}
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// Cut integer to 18 digits to ensure no int64 overflow.
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sumInt = sumInt[:18]
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sumTmp := sumInt
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for i, v := range sumInt {
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if v == '0' {
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sumTmp = sumInt[i+1:]
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continue
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}
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break
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}
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sumInt = sumTmp
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randSeed, err := strconv.ParseInt(sumInt, 0, 64)
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if err != nil {
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fmt.Printf("Unable to parse sumInt: %s", err)
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os.Exit(-1)
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}
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dbNameRand = rand.New(rand.NewSource(randSeed))
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}
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var alphabetChars = "abcdefghijklmnopqrstuvwxyz"
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func randStr(length int) string {
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c := len(alphabetChars)
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output := make([]rune, length)
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for i := 0; i < length; i++ {
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output[i] = rune(alphabetChars[dbNameRand.Intn(c)])
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}
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return string(output)
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}
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// getDBNameHash takes a database name in, and generates
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// a random string using the database name as the rand Seed.
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// getDBNameHash is used to generate unique test database names.
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func getDBNameHash(input string) string {
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initDBNameRand(input)
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return randStr(40)
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}
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