gologger/console.go

package gologger

import (
	"fmt"
)

// ConsoleAppender implements the LoggerAppender interface for console output.
// It uses color-coded templates for different log levels.
// Example:
//  appender := &ConsoleAppender{
//    formatter: NewSimpleFormatter(),
//  }
//  appender.Append(event)
//  appender.Close()
type ConsoleAppender struct {
	formatter LogFormatter
}

const (
	ErrorTemplate = "\033[1;31m%s\033[0m"
	WarnTemplate  = "\033[1;33m%s\033[0m"
	InfoTemplate  = "\033[1;32m%s\033[0m"
	DebugTemplate = "\033[1;34m%s\033[0m"
	TraceTemplate = "\033[1;35m%s\033[0m"
)

// Close implements LoggerAppender.
func (c *ConsoleAppender) Close() {

}

func (c *ConsoleAppender) GetName() string {
	return "console"
}

func (c *ConsoleAppender) Append(logEvent LogEvent) {

	logMsg := c.formatter(logEvent)
	switch logEvent.Level {
	case Error:
		fmt.Printf(ErrorTemplate, logMsg)
	case Warn:
		fmt.Printf(WarnTemplate, logMsg)
	case Info:
		fmt.Printf(InfoTemplate, logMsg)
	case Debug:
		fmt.Printf(DebugTemplate, logMsg)
	case Trace:
		fmt.Printf(TraceTemplate, logMsg)
	}
}
func makeConsoleAppender(appenderConfig LogAppenderConfig) *LoggerAppender {
	consoleAppender := &ConsoleAppender{}
	consoleAppender.formatter = SelectFormatter(appenderConfig.Formatter)
	var appender LoggerAppender = consoleAppender
	return &appender
}
func init() {
	RegistAppender("console", makeConsoleAppender)
}