server: add verbosity level

server: remove filename from log (fix #1)

logger/logger.go

@@ -0,0 +1,114 @@
+package logger
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"time"
+
+	lg "gorm.io/gorm/logger"
+)
+
+type LogLevel int
+
+const (
+	Silent LogLevel = iota + 1
+	Error
+	Warn
+	Info
+)
+
+type logger struct {
+	lg.Writer
+	lg.Config
+	lg.Interface
+	infoStr, warnStr, errStr            string
+	traceStr, traceErrStr, traceWarnStr string
+}
+
+func New(writer lg.Writer, config lg.Config) lg.Interface {
+	var (
+		infoStr      = "%s\n[info] "
+		warnStr      = "%s\n[warn] "
+		errStr       = "%s\n[error] "
+		traceStr     = "[%.3fms] [rows:%v] %s"
+		traceWarnStr = "%s\n[%.3fms] [rows:%v] %s"
+		traceErrStr  = "%s\n[%.3fms] [rows:%v] %s"
+	)
+
+	if config.Colorful {
+		infoStr = lg.Green + "%s\n" + lg.Reset + lg.Green + "[info] " + lg.Reset
+		warnStr = lg.BlueBold + "%s\n" + lg.Reset + lg.Magenta + "[warn] " + lg.Reset
+		errStr = lg.Magenta + "%s\n" + lg.Reset + lg.Red + "[error] " + lg.Reset
+		traceStr = lg.Yellow + "[%.3fms] " + lg.BlueBold + "[rows:%v]" + lg.Reset + " %s"
+		traceWarnStr = lg.Green + "%s " + lg.Reset + lg.RedBold + "[%.3fms] " + lg.Yellow + "[rows:%v]" + lg.Magenta + " %s" + lg.Reset
+		traceErrStr = lg.RedBold + "%s " + lg.Reset + lg.Yellow + "[%.3fms] " + lg.BlueBold + "[rows:%v]" + lg.Reset + " %s"
+	}
+
+	return &logger{
+		Writer:       writer,
+		Config:       config,
+		infoStr:      infoStr,
+		warnStr:      warnStr,
+		errStr:       errStr,
+		traceStr:     traceStr,
+		traceWarnStr: traceWarnStr,
+		traceErrStr:  traceErrStr,
+	}
+}
+
+func (l *logger) LogMode(level lg.LogLevel) lg.Interface {
+	newlogger := *l
+	newlogger.LogLevel = level
+	return &newlogger
+}
+
+func (l *logger) Info(ctx context.Context, msg string, data ...interface{}) {
+	if l.LogLevel >= lg.Info {
+		l.Printf(l.infoStr+msg, data...)
+	}
+}
+
+func (l *logger) Warn(ctx context.Context, msg string, data ...interface{}) {
+	if l.LogLevel >= lg.Warn {
+		l.Printf(l.warnStr+msg, data...)
+	}
+}
+
+func (l *logger) Error(ctx context.Context, msg string, data ...interface{}) {
+	if l.LogLevel >= lg.Error {
+		l.Printf(l.errStr+msg, data...)
+	}
+}
+
+func (l *logger) Trace(ctx context.Context, begin time.Time, fc func() (string, int64), err error) {
+	if l.LogLevel <= lg.Silent {
+		return
+	}
+
+	elapsed := time.Since(begin)
+	switch {
+	case err != nil && l.LogLevel >= lg.Error && (!errors.Is(err, lg.ErrRecordNotFound) || !l.IgnoreRecordNotFoundError):
+		sql, rows := fc()
+		if rows == -1 {
+			l.Printf(l.traceErrStr, err, float64(elapsed.Nanoseconds())/1e6, "-", sql)
+		} else {
+			l.Printf(l.traceErrStr, err, float64(elapsed.Nanoseconds())/1e6, rows, sql)
+		}
+	case elapsed > l.SlowThreshold && l.SlowThreshold != 0 && l.LogLevel >= lg.Warn:
+		sql, rows := fc()
+		slowLog := fmt.Sprintf("SLOW SQL >= %v", l.SlowThreshold)
+		if rows == -1 {
+			l.Printf(l.traceWarnStr, slowLog, float64(elapsed.Nanoseconds())/1e6, "-", sql)
+		} else {
+			l.Printf(l.traceWarnStr, slowLog, float64(elapsed.Nanoseconds())/1e6, rows, sql)
+		}
+	case l.LogLevel == lg.Info:
+		sql, rows := fc()
+		if rows == -1 {
+			l.Printf(l.traceStr, float64(elapsed.Nanoseconds())/1e6, "-", sql)
+		} else {
+			l.Printf(l.traceStr, float64(elapsed.Nanoseconds())/1e6, rows, sql)
+		}
+	}
+}