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fix bad logging performance of bulk create (#5520) (#5521)

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Xudong Zhang 2022-07-18 20:47:00 +08:00 committed by GitHub
parent 75720099b5
commit bab3cd1724
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 14 additions and 3 deletions
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15
logger/sql.go
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@ -30,6 +30,8 @@ func isPrintable(s string) bool {
var convertibleTypes = []reflect.Type{reflect.TypeOf(time.Time{}), reflect.TypeOf(false), reflect.TypeOf([]byte{})}
var numericPlaceholderRe = regexp.MustCompile(`\$\d+\$`)
// ExplainSQL generate SQL string with given parameters, the generated SQL is expected to be used in logger, execute it might introduce a SQL injection vulnerability
func ExplainSQL(sql string, numericPlaceholder *regexp.Regexp, escaper string, avars ...interface{}) string {
var (
@ -138,9 +140,18 @@ func ExplainSQL(sql string, numericPlaceholder *regexp.Regexp, escaper string, a
sql = newSQL.String()
} else {
sql = numericPlaceholder.ReplaceAllString(sql, "$$$1$$")
for idx, v := range vars {
sql = strings.Replace(sql, "$"+strconv.Itoa(idx+1)+"$", v, 1)
sql = numericPlaceholderRe.ReplaceAllStringFunc(sql, func(v string) string {
num := v[1 : len(v)-1]
n, _ := strconv.Atoi(num)
// position var start from 1 ($1, $2)
n -= 1
if n >= 0 && n <= len(vars)-1 {
return vars[n]
}
return v
})
}
return sql