/
buffer.go
74 lines (70 loc) · 1.48 KB
/
buffer.go
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package log4go
import (
"bytes"
"errors"
"runtime"
"strconv"
"strings"
"text/template"
"time"
)
// 写入缓冲区
type logBuffer struct {
tmpl *template.Template
level level
store chan *message
opts int64
}
// 新建写入缓冲区
func newLogBuffer(format string, level level, store chan *message) *logBuffer {
var opts int64
for k, v := range options {
if -1 == strings.Index(format, k) {
continue
}
opts = opts | v
}
// 替换适配器
tmplText := adapter.Replace(format) + "\n"
// 生成适配器模版
tmpl, err := template.New("Log").Parse(tmplText)
if err != nil {
panic(err)
}
return &logBuffer{tmpl, level, store, opts}
}
// 写入数据
func (this *logBuffer) Write(p []byte) (n int, err error) {
defer func() {
if e := recover(); e != nil {
strErr, _ := e.(string)
n = 0
err = errors.New(strErr)
}
}()
util := make(map[string]interface{})
if this.opts&t == t || this.opts&d == d {
util["TIME"] = time.Now()
}
if this.opts&l == l {
util["LEVEL"] = levelStrings[this.level]
}
if this.opts&m == m {
util["MESSAGE"] = string(p[:len(p)-1])
}
if this.opts&s == s {
// 获取代码所在文件名及行数
if _, file, line, ok := runtime.Caller(3); ok {
util["SOURCE"] = file + ":" + strconv.Itoa(line)
}
}
// 数据写入缓存
buf := bytes.NewBufferString("")
err = this.tmpl.Execute(buf, util)
if err != nil {
panic(err)
}
// 写入数据中心队列
this.store <- &message{this.level, buf.Bytes()}
return len(p), nil
}