113 lines
2.3 KiB
Go
113 lines
2.3 KiB
Go
// Copyright 2017 Unknwon
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//
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// Licensed under the Apache License, Version 2.0 (the "License"): you may
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// not use this file except in compliance with the License. You may obtain
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// a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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// License for the specific language governing permissions and limitations
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// under the License.
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package clog
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import (
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"log"
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"github.com/fatih/color"
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)
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const CONSOLE MODE = "console"
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// Console color set for different levels.
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var consoleColors = []func(a ...interface{}) string{
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color.New(color.FgBlue).SprintFunc(), // Trace
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color.New(color.FgGreen).SprintFunc(), // Info
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color.New(color.FgYellow).SprintFunc(), // Warn
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color.New(color.FgRed).SprintFunc(), // Error
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color.New(color.FgHiRed).SprintFunc(), // Fatal
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}
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type ConsoleConfig struct {
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// Minimum level of messages to be processed.
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Level LEVEL
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// Buffer size defines how many messages can be queued before hangs.
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BufferSize int64
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}
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type console struct {
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*log.Logger
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Adapter
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}
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func newConsole() Logger {
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return &console{
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Logger: log.New(color.Output, "", log.Ldate|log.Ltime),
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Adapter: Adapter{
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quitChan: make(chan struct{}),
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},
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}
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}
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func (c *console) Level() LEVEL { return c.level }
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func (c *console) Init(v interface{}) error {
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cfg, ok := v.(ConsoleConfig)
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if !ok {
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return ErrConfigObject{"ConsoleConfig", v}
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}
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if !isValidLevel(cfg.Level) {
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return ErrInvalidLevel{}
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}
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c.level = cfg.Level
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c.msgChan = make(chan *Message, cfg.BufferSize)
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return nil
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}
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func (c *console) ExchangeChans(errorChan chan<- error) chan *Message {
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c.errorChan = errorChan
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return c.msgChan
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}
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func (c *console) write(msg *Message) {
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c.Logger.Print(consoleColors[msg.Level](msg.Body))
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}
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func (c *console) Start() {
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LOOP:
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for {
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select {
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case msg := <-c.msgChan:
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c.write(msg)
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case <-c.quitChan:
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break LOOP
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}
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}
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for {
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if len(c.msgChan) == 0 {
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break
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}
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c.write(<-c.msgChan)
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}
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c.quitChan <- struct{}{} // Notify the cleanup is done.
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}
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func (c *console) Destroy() {
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c.quitChan <- struct{}{}
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<-c.quitChan
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close(c.msgChan)
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close(c.quitChan)
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}
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func init() {
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Register(CONSOLE, newConsole)
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}
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