/
log.go
88 lines (70 loc) · 1.68 KB
/
log.go
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package httpbridge
import (
"fmt"
"io"
"time"
)
type LogLevel int
const (
LogLevelDebug LogLevel = iota
LogLevelInfo
LogLevelWarn
LogLevelError
LogLevelFatal
)
// ISO 8601, with 6 digits of time precision
const timeFormat = "2006-01-02T15:04:05.000000Z0700"
const lineTerminator = "\n"
var logLevelString []string = []string{"[D]", "[I]", "[W]", "[E]", "[F]"}
type Logger struct {
Target io.Writer
Level LogLevel
}
func (g *Logger) Debug(m string) {
g.write(LogLevelDebug, m)
}
func (g *Logger) Debugf(m string, args ...interface{}) {
g.writef(LogLevelDebug, m, args...)
}
func (g *Logger) Info(m string) {
g.write(LogLevelInfo, m)
}
func (g *Logger) Infof(m string, args ...interface{}) {
g.writef(LogLevelInfo, m, args...)
}
func (g *Logger) Warn(m string) {
g.write(LogLevelWarn, m)
}
func (g *Logger) Warnf(m string, args ...interface{}) {
g.writef(LogLevelWarn, m, args...)
}
func (g *Logger) Error(m string) {
g.write(LogLevelError, m)
}
func (g *Logger) Errorf(m string, args ...interface{}) {
g.writef(LogLevelError, m, args...)
}
func (g *Logger) Fatal(m string) {
g.write(LogLevelFatal, m)
}
func (g *Logger) Fatalf(m string, args ...interface{}) {
g.writef(LogLevelFatal, m, args...)
}
func (g *Logger) write(level LogLevel, m string) {
if level >= g.Level {
terminator := ""
if len(m) == 0 || m[len(m)-1] != '\n' {
terminator = lineTerminator
}
msg := time.Now().Format(timeFormat) + " " + logLevelString[level] + " " + m + terminator
g.Target.Write([]byte(msg))
}
if level == LogLevelFatal {
panic(m)
}
}
func (g *Logger) writef(level LogLevel, m string, args ...interface{}) {
if level >= g.Level {
g.write(level, fmt.Sprintf(m, args...))
}
}