forked from XiaoMi/soar
/
logger.go
143 lines (121 loc) · 3.26 KB
/
logger.go
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/*
* Copyright 2018 Xiaomi, Inc.
*
* 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 common
import (
"fmt"
"regexp"
"runtime"
"strings"
)
type Logger interface {
Info(...interface{})
Print(...interface{})
Debug(...interface{})
Warn(...interface{})
Warning(...interface{})
Error(...interface{})
}
type LocalLogger struct {
}
func (*LocalLogger) Info(v ...interface{}) {
fmt.Print(v)
}
func (*LocalLogger) Print(v ...interface{}) {
fmt.Print(v)
}
func (*LocalLogger) Debug(v ...interface{}) {
fmt.Print(v)
}
func (*LocalLogger) Warn(v ...interface{}) {
fmt.Print(v)
}
func (*LocalLogger) Warning(v ...interface{}) {
fmt.Print(v)
}
func (*LocalLogger) Error(v ...interface{}) {
fmt.Print(v)
}
// Log 使用 beego 的 log 库
var Log Logger
// BaseDir 日志打印在binary的根路径
var BaseDir string
func init() {
Log = &LocalLogger{}
}
func SetLogger(l Logger) {
Log = l
}
func Caller() string {
// we get the callers as uintptrs - but we just need 1
fpcs := make([]uintptr, 1)
// skip 3 levels to get to the caller of whoever called Caller()
n := runtime.Callers(3, fpcs)
if n == 0 {
return "n/a" // proper error her would be better
}
// get the info of the actual function that's in the pointer
fun := runtime.FuncForPC(fpcs[0] - 1)
if fun == nil {
return "n/a"
}
// return its name
return fun.Name()
}
// GetFunctionName 获取调当前函数名
func GetFunctionName() string {
// Skip this function, and fetch the PC and file for its parent
pc, _, _, _ := runtime.Caller(1)
// Retrieve a Function object this functions parent
functionObject := runtime.FuncForPC(pc)
// Regex to extract just the function name (and not the module path)
extractFnName := regexp.MustCompile(`^.*\.(.*)$`)
fnName := extractFnName.ReplaceAllString(functionObject.Name(), "$1")
return fnName
}
// fileName get filename from path
func fileName(original string) string {
i := strings.LastIndex(original, "/")
if i == -1 {
return original
}
return original[i+1:]
}
// LogIfError 简化if err != nil 打 Error 日志代码长度
func LogIfError(err error, format string, v ...interface{}) {
if err != nil {
_, fn, line, _ := runtime.Caller(1)
if format == "" {
format = "[%s:%d] %s"
Log.Print(format, fileName(fn), line, err.Error())
} else {
format = "[%s:%d] " + format + " Error: %s"
Log.Print(format, fileName(fn), line, v, err.Error())
}
}
}
// LogIfWarn 简化if err != nil 打 Warn 日志代码长度
func LogIfWarn(err error, format string, v ...interface{}) {
if err != nil {
_, fn, line, _ := runtime.Caller(1)
if format == "" {
format = "[%s:%d] %s"
Log.Print(format, fileName(fn), line, err.Error())
} else {
format = "[%s:%d] " + format + " Error: %s"
Log.Print(format, fileName(fn), line, v, err.Error())
}
}
}