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- // 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"
- "os"
- "strings"
- "time"
-
- "github.com/shiena/ansicolor"
- )
-
- // 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;44"), // Debug Background blue
- }
-
- // consoleWriter implements LoggerInterface and writes messages to terminal.
- type consoleWriter struct {
- lg *logWriter
- Level int `json:"level"`
- Colorful bool `json:"color"` //this filed is useful only when system's terminal supports color
- }
-
- // NewConsole create ConsoleWriter returning as LoggerInterface.
- func NewConsole() Logger {
- cw := &consoleWriter{
- lg: newLogWriter(ansicolor.NewAnsiColorWriter(os.Stdout)),
- Level: LevelDebug,
- Colorful: true,
- }
- 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(when time.Time, msg string, level int, lable string, env string) error {
- if level > c.Level {
- return nil
- }
- if c.Colorful {
- msg = strings.Replace(msg, levelPrefix[level], colors[level](levelPrefix[level]), 1)
- }
- c.lg.writeln(when, msg)
- return nil
- }
-
- // Destroy implementing method. empty.
- func (c *consoleWriter) Destroy() {
-
- }
-
- // Flush implementing method. empty.
- func (c *consoleWriter) Flush() {
-
- }
-
- func init() {
- Register(AdapterConsole, NewConsole)
- }
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