add file appender

.vscode/launch.json

@@ -9,7 +9,8 @@
       "type": "go",
       "request": "launch",
       "mode": "auto",
-      "program": "${fileDirname}"
+      "program": "${fileDirname}",
+      "cwd": "${workspaceFolder}",
     }
   ]
 }

console.go

@@ -6,14 +6,15 @@ import (
 )
 
 const (
-	ErrorTemplate = "\033[1;31;40m%s\033[0m\n"
-	WarnTemplate  = "\033[1;33;40m%s\033[0m\n"
-	InfoTemplate  = "\033[1;32;40m%s\033[0m\n"
-	DebugTemplate = "\033[1;34;40m%s\033[0m\n"
-	TraceTemplate = "\033[1;35;40m%s\033[0m\n"
+	ErrorTemplate = "\033[1;31m%s\033[0m\n"
+	WarnTemplate  = "\033[1;33m%s\033[0m\n"
+	InfoTemplate  = "\033[1;32m%s\033[0m\n"
+	DebugTemplate = "\033[1;34m%s\033[0m\n"
+	TraceTemplate = "\033[1;35m%s\033[0m\n"
 )
 
-type ConsoleAppender struct{}
+type ConsoleAppender struct {
+}
 
 func (c *ConsoleAppender) GetName() string {
 	return "console"
@@ -28,6 +29,8 @@ func (c *ConsoleAppender) Append(logEvent LogEvent) {
 	dmsg := fmt.Sprint(logEvent.Data)
 	dmsg = strings.TrimLeft(dmsg, "[")
 	dmsg = strings.TrimRight(dmsg, "]")
+	data = append(data, "["+logEvent.Category+"] ")
+
 	data = append(data, dmsg)
 	logMsg := fmt.Sprint(data...)
 	switch logEvent.Level {
@@ -43,3 +46,10 @@ func (c *ConsoleAppender) Append(logEvent LogEvent) {
 		fmt.Printf(TraceTemplate, logMsg)
 	}
 }
+func makeConsoleAppender(appenderConfig LogAppenderConfig) LoggerAppender {
+	var appender LoggerAppender = &ConsoleAppender{}
+	return appender
+}
+func init() {
+	RegistAppender("console", makeConsoleAppender)
+}

file.go

@@ -0,0 +1,55 @@
+package gologger
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+)
+
+type FileAppender struct {
+	filePath string
+	file     *os.File
+}
+
+func (f *FileAppender) GetName() string {
+	return "FileAppender:" + f.filePath
+}
+
+func (f *FileAppender) Append(logEvent LogEvent) {
+	if f.file == nil || int(f.file.Fd()) == -1 {
+		dirName := filepath.Dir(f.filePath)
+		_, err := os.Stat(dirName)
+		if err != nil && os.IsNotExist(err) {
+			os.MkdirAll(dirName, 0755)
+		}
+		f.file, _ = os.OpenFile(f.filePath, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
+	}
+
+	data := []interface{}{
+		logEvent.Ts.Format("2006-01-02 15:04:05"),
+		" ",
+	}
+	data = append(data, "["+logEvent.Category+"] ")
+	dmsg := fmt.Sprint(logEvent.Data...)
+	data = append(data, dmsg)
+	logMsg := fmt.Sprint(data...)
+	f.file.WriteString(logMsg + "\n")
+
+}
+
+func makeFileAppender(appenderConfig LogAppenderConfig) LoggerAppender {
+	var logfile interface{}
+	var ok bool
+	logfile, ok = appenderConfig.Options["file"]
+	if !ok {
+		logfile = "default.log"
+	}
+	var ret LoggerAppender = &FileAppender{
+		filePath: logfile.(string),
+	}
+	return ret
+}
+
+func init() {
+	RegistAppender("file", makeFileAppender)
+}

main.go

@@ -1,6 +1,7 @@
 package gologger
 
 import (
+	"strings"
 	"time"
 )
 
@@ -13,22 +14,43 @@ const (
 	Trace
 )
 
+var logLevelMap map[string]int = map[string]int{
+	"off":   NoLog,
+	"error": Error,
+	"warn":  Warn,
+	"info":  Info,
+	"debug": Debug,
+	"trace": Trace,
+}
 var loggerMap map[string]Logger = map[string]Logger{}
+var appenderFactoryMap map[string]func(LogAppenderConfig) LoggerAppender = map[string]func(LogAppenderConfig) LoggerAppender{}
+var appenders map[string]LoggerAppender = map[string]LoggerAppender{}
+var loggerConfig LoggersConfig
 
+type LogAppenderConfig struct {
+	Type    string                 `json:"type"`
+	Options map[string]interface{} `json:"options"`
+}
 type LogConfig struct {
-	Name     string
-	Level    int
-	Appender LoggerAppender
+	Level     string   `json:"level"`
+	Appenders []string `json:"appenders"`
+}
+
+type LoggersConfig struct {
+	Appenders  map[string]LogAppenderConfig `json:"appenders"`
+	Categories map[string]LogConfig         `json:"categories"`
 }
 type Logger struct {
-	LogConfig
+	category  string
+	level     int
+	appenders []LoggerAppender
 }
 
 type LogEvent struct {
+	Category string
 	Ts       time.Time
 	Level    int
 	Data     []interface{}
-	ELogger *Logger
 }
 
 type LoggerAppender interface {
@@ -37,17 +59,21 @@ type LoggerAppender interface {
 }
 
 var consoleAppender LoggerAppender = &ConsoleAppender{}
-var defaultLogger = &LogConfig{
-	Level:    Error,
-	Appender: consoleAppender,
+var defaultLogger = &Logger{
+
+	level:     Error,
+	appenders: []LoggerAppender{consoleAppender},
 }
 
 func (l *Logger) log(Level int, msg []interface{}) {
 
-	if Level <= l.Level {
+	if Level <= l.level {
 		now := time.Now()
-		logEvent := LogEvent{now, Level, msg, l}
-		l.Appender.Append(logEvent)
+		logEvent := LogEvent{l.category, now, Level, msg}
+		for _, appender := range l.appenders {
+			appender.Append(logEvent)
+		}
+		// l.Appender.Append(logEvent)
 		// fmt.Println(now.Format("2006-01-02 15:04:05"), " ", l.Name, ": ", msg)
 	}
 }
@@ -71,16 +97,54 @@ func (l *Logger) Debug(msg ...interface{}) {
 func (l *Logger) Trace(msg ...interface{}) {
 	l.log(Trace, msg)
 }
-func GetLogger(logConfig LogConfig) Logger {
-	if logger, ok := loggerMap[logConfig.Name]; ok {
+func GetLogger(name string) Logger {
+	if logger, ok := loggerMap[name]; ok {
 		return logger
 	} else {
-		logger := &Logger{logConfig}
-		if logger.Appender == nil {
-			logger.Appender = defaultLogger.Appender
+		logConfig, ok := loggerConfig.Categories[name]
+		if ok {
+			return makeLogger(name, logConfig)
 		}
-		loggerMap[logConfig.Name] = *logger
-		return *logger
+		if name == "default" {
+			return *defaultLogger
+		}
+		ret := GetLogger("default")
+		ret.category = name
+		return ret
 	}
-
+}
+
+func makeLogger(name string, config LogConfig) Logger {
+	logger := &Logger{category: name}
+	levelstr := strings.ToLower(config.Level)
+	logger.level = logLevelMap[levelstr]
+	if config.Appenders == nil || len(config.Appenders) == 0 {
+		logger.appenders = []LoggerAppender{consoleAppender}
+	} else {
+		logger.appenders = make([]LoggerAppender, len(config.Appenders))
+		for i, appenderName := range config.Appenders {
+			logger.appenders[i] = appenders[appenderName]
+		}
+	}
+	loggerMap[name] = *logger
+	return *logger
+}
+func Configure(config LoggersConfig) {
+	loggerConfig = config
+	for name, appenderConfig := range loggerConfig.Appenders {
+		appenderFactory, ok := appenderFactoryMap[appenderConfig.Type]
+		if ok {
+			appenders[name] = appenderFactory(appenderConfig)
+		} else {
+			appenders[name] = &ConsoleAppender{}
+		}
+	}
+	for name, _ := range loggerConfig.Categories {
+		GetLogger(name)
+	}
+}
+
+func RegistAppender(typeName string, appenderCreatCb func(LogAppenderConfig) LoggerAppender) {
+
+	appenderFactoryMap[typeName] = appenderCreatCb
 }

test/main.go

@@ -0,0 +1,43 @@
+package main
+
+import (
+	logger "git.pyer.club/kingecg/gologger"
+)
+
+func main() {
+	logger.Configure(logger.LoggersConfig{
+		Categories: map[string]logger.LogConfig{
+			"default": {
+				Level: "debug",
+				Appenders: []string{
+					"console",
+				},
+			},
+			"fat": {
+				Level: "debug",
+				Appenders: []string{
+					"console",
+					"file",
+				},
+			},
+		},
+		Appenders: map[string]logger.LogAppenderConfig{
+			"console": {
+				Type: "console",
+			},
+			"file": {
+				Type: "file",
+				Options: map[string]interface{}{
+					"file": "./log/fat.log",
+				},
+			},
+		},
+	})
+	defaultLogger := logger.GetLogger("default")
+	defaultLogger.Debug("debug")
+	fatLogger := logger.GetLogger("fat")
+	fatLogger.Debug("debug")
+	defaultLogger.Debug("debug again")
+	fatLogger.Debug("debug again")
+	fatLogger.Error("This is error")
+}