mirror of https://github.com/go-gorm/gorm.git
120 lines
3.2 KiB
Go
120 lines
3.2 KiB
Go
package gorm
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import (
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"database/sql/driver"
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"fmt"
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"log"
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"os"
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"reflect"
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"regexp"
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"strconv"
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"time"
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"unicode"
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)
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var (
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defaultLogger = Logger{log.New(os.Stdout, "\r\n", 0)}
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sqlRegexp = regexp.MustCompile(`\?`)
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numericPlaceHolderRegexp = regexp.MustCompile(`\$\d+`)
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)
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func isPrintable(s string) bool {
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for _, r := range s {
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if !unicode.IsPrint(r) {
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return false
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}
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}
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return true
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}
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var LogFormatter = func(values ...interface{}) (messages []interface{}) {
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if len(values) > 1 {
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var (
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sql string
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formattedValues []string
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level = values[0]
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currentTime = "\n\033[33m[" + NowFunc().Format("2006-01-02 15:04:05") + "]\033[0m"
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source = fmt.Sprintf("\033[35m(%v)\033[0m", values[1])
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)
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messages = []interface{}{source, currentTime}
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if level == "sql" {
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// duration
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messages = append(messages, fmt.Sprintf(" \033[36;1m[%.2fms]\033[0m ", float64(values[2].(time.Duration).Nanoseconds()/1e4)/100.0))
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// sql
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for _, value := range values[4].([]interface{}) {
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indirectValue := reflect.Indirect(reflect.ValueOf(value))
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if indirectValue.IsValid() {
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value = indirectValue.Interface()
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if t, ok := value.(time.Time); ok {
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formattedValues = append(formattedValues, fmt.Sprintf("'%v'", t.Format("2006-01-02 15:04:05")))
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} else if b, ok := value.([]byte); ok {
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if str := string(b); isPrintable(str) {
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formattedValues = append(formattedValues, fmt.Sprintf("'%v'", str))
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} else {
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formattedValues = append(formattedValues, "'<binary>'")
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}
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} else if r, ok := value.(driver.Valuer); ok {
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if value, err := r.Value(); err == nil && value != nil {
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formattedValues = append(formattedValues, fmt.Sprintf("'%v'", value))
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} else {
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formattedValues = append(formattedValues, "NULL")
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}
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} else {
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formattedValues = append(formattedValues, fmt.Sprintf("'%v'", value))
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}
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} else {
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formattedValues = append(formattedValues, "NULL")
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}
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}
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// differentiate between $n placeholders or else treat like ?
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if numericPlaceHolderRegexp.MatchString(values[3].(string)) {
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sql = values[3].(string)
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for index, value := range formattedValues {
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placeholder := fmt.Sprintf(`\$%d([^\d]|$)`, index+1)
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sql = regexp.MustCompile(placeholder).ReplaceAllString(sql, value+"$1")
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}
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} else {
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formattedValuesLength := len(formattedValues)
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for index, value := range sqlRegexp.Split(values[3].(string), -1) {
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sql += value
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if index < formattedValuesLength {
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sql += formattedValues[index]
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}
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}
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}
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messages = append(messages, sql)
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messages = append(messages, fmt.Sprintf(" \n\033[36;31m[%v]\033[0m ", strconv.FormatInt(values[5].(int64), 10)+" rows affected or returned "))
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} else {
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messages = append(messages, "\033[31;1m")
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messages = append(messages, values[2:]...)
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messages = append(messages, "\033[0m")
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}
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}
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return
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}
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type logger interface {
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Print(v ...interface{})
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}
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// LogWriter log writer interface
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type LogWriter interface {
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Println(v ...interface{})
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}
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// Logger default logger
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type Logger struct {
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LogWriter
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}
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// Print format & print log
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func (logger Logger) Print(values ...interface{}) {
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logger.Println(LogFormatter(values...)...)
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}
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