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Beego/logs/console.go
2015-09-11 23:08:24 +08:00

98 lines
2.3 KiB
Go

// Copyright 2014 beego Author. All Rights Reserved.
//
// 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 logs
import (
"encoding/json"
"log"
"os"
"runtime"
)
// brush is a color join function
type brush func(string) string
// newBrush return a fix color Brush
func newBrush(color string) brush {
pre := "\033["
reset := "\033[0m"
return func(text string) string {
return pre + color + "m" + text + reset
}
}
var colors = []brush{
newBrush("1;37"), // Emergency white
newBrush("1;36"), // Alert cyan
newBrush("1;35"), // Critical magenta
newBrush("1;31"), // Error red
newBrush("1;33"), // Warning yellow
newBrush("1;32"), // Notice green
newBrush("1;34"), // Informational blue
newBrush("1;34"), // Debug blue
}
// consoleWriter implements LoggerInterface and writes messages to terminal.
type consoleWriter struct {
lg *log.Logger
Level int `json:"level"`
}
// NewConsole create ConsoleWriter returning as LoggerInterface.
func NewConsole() Logger {
cw := &consoleWriter{
lg: log.New(os.Stdout, "", log.Ldate|log.Ltime),
Level: LevelDebug,
}
return cw
}
// Init init console logger.
// jsonconfig like '{"level":LevelTrace}'.
func (c *consoleWriter) Init(jsonconfig string) error {
if len(jsonconfig) == 0 {
return nil
}
return json.Unmarshal([]byte(jsonconfig), c)
}
// WriteMsg write message in console.
func (c *consoleWriter) WriteMsg(msg string, level int) error {
if level > c.Level {
return nil
}
if goos := runtime.GOOS; goos == "windows" {
c.lg.Println(msg)
return nil
}
c.lg.Println(colors[level](msg))
return nil
}
// Destroy implementing method. empty.
func (c *consoleWriter) Destroy() {
}
// Flush implementing method. empty.
func (c *consoleWriter) Flush() {
}
func init() {
Register("console", NewConsole)
}