/
terminal_logger.go
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/
terminal_logger.go
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/*
Copyright 2021 Qiniu Cloud (qiniu.com)
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package log
import (
"fmt"
"io"
"os"
"sync"
goansi "github.com/k0kubun/go-ansi"
"github.com/mgutz/ansi"
"go.uber.org/zap/zapcore"
)
// goansi works nicer on Windows platform
var stdout = goansi.NewAnsiStdout()
var stderr = goansi.NewAnsiStderr()
type terminalLogger struct {
mutex sync.Mutex
level zapcore.Level
loadingText *loadingText
}
type levelFuncType int32
const (
fatalFn levelFuncType = iota
infoFn
errorFn
warnFn
debugFn
doneFn
)
type levelFuncInfo struct {
tag string
color string
level zapcore.Level
stream io.Writer
}
var levelFuncMap = map[levelFuncType]*levelFuncInfo{
doneFn: {
tag: "[done] √ ",
color: "green+b",
level: zapcore.InfoLevel,
stream: stdout,
},
debugFn: {
tag: "[debug] ",
color: "green+b",
level: zapcore.DebugLevel,
stream: stdout,
},
infoFn: {
tag: "[info] ",
color: "cyan+b",
level: zapcore.InfoLevel,
stream: stdout,
},
warnFn: {
tag: "[warn] ",
color: "magenta+b",
level: zapcore.WarnLevel,
stream: stdout,
},
errorFn: {
tag: "[error] ",
color: "yellow+b",
level: zapcore.ErrorLevel,
stream: stdout,
},
fatalFn: {
tag: "[fatal] ",
color: "red+b",
level: zapcore.FatalLevel,
stream: stdout,
},
}
func (t *terminalLogger) writeMessage(funcType levelFuncType, message string) {
funcInfo := levelFuncMap[funcType]
if t.level <= funcInfo.level {
// 如果当前有消息在加载,需先暂停
if t.loadingText != nil {
t.loadingText.stop()
}
funcInfo.stream.Write([]byte(ansi.Color(funcInfo.tag, funcInfo.color)))
funcInfo.stream.Write([]byte(message))
// 恢复加载
if t.loadingText != nil && funcType != fatalFn {
t.loadingText.start()
}
}
}
// StartWait prints a waiting message until StopWait is called
func (t *terminalLogger) StartWait(message string) {
t.mutex.Lock()
defer t.mutex.Unlock()
// 撤销之前的加载
if t.loadingText != nil {
t.loadingText.stop()
t.loadingText = nil
}
// 创建新的加载字符串
t.loadingText = &loadingText{
message: message,
stream: goansi.NewAnsiStdout(),
}
t.loadingText.start()
}
// StopWait stops waiting
func (t *terminalLogger) StopWait() {
t.mutex.Lock()
defer t.mutex.Unlock()
if t.loadingText != nil {
t.loadingText.stop()
t.loadingText = nil
}
}
func (t *terminalLogger) Sync() {
}
func (t *terminalLogger) Debugf(format string, args ...interface{}) {
t.mutex.Lock()
defer t.mutex.Unlock()
t.writeMessage(debugFn, fmt.Sprintf(format, args...)+"\n")
}
func (t *terminalLogger) Donef(format string, args ...interface{}) {
t.mutex.Lock()
defer t.mutex.Unlock()
t.writeMessage(doneFn, fmt.Sprintf(format, args...)+"\n")
}
func (t *terminalLogger) Infof(format string, args ...interface{}) {
t.mutex.Lock()
defer t.mutex.Unlock()
t.writeMessage(infoFn, fmt.Sprintf(format, args...)+"\n")
}
func (t *terminalLogger) Errorf(format string, args ...interface{}) {
t.mutex.Lock()
defer t.mutex.Unlock()
t.writeMessage(errorFn, fmt.Sprintf(format, args...)+"\n")
}
func (t *terminalLogger) Warnf(format string, args ...interface{}) {
t.mutex.Lock()
defer t.mutex.Unlock()
t.writeMessage(warnFn, fmt.Sprintf(format, args...)+"\n")
}
func (t *terminalLogger) Fatalf(format string, args ...interface{}) {
t.mutex.Lock()
defer t.mutex.Unlock()
t.writeMessage(fatalFn, fmt.Sprintf(format, args...)+"\n")
os.Exit(1)
}