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package log
import (
"fmt"
"log"
"os"
"path"
"github.com/jwijenbergh/eduvpn-common/internal/types"
"github.com/jwijenbergh/eduvpn-common/internal/util"
)
type FileLogger struct {
Level LogLevel
File *os.File
}
type LogLevel int8
const (
LOG_NOTSET LogLevel = iota
LOG_INFO
LOG_WARNING
LOG_ERROR
)
func (e LogLevel) String() string {
switch e {
case LOG_NOTSET:
return "NOTSET"
case LOG_INFO:
return "INFO"
case LOG_WARNING:
return "WARNING"
case LOG_ERROR:
return "ERROR"
default:
return "UNKNOWN"
}
}
func (logger *FileLogger) Init(level LogLevel, name string, directory string) error {
errorMessage := "failed creating log"
configDirErr := util.EnsureDirectory(directory)
if configDirErr != nil {
return &types.WrappedErrorMessage{Message: errorMessage, Err: configDirErr}
}
logFile, logOpenErr := os.OpenFile(
logger.getFilename(directory, name),
os.O_RDWR|os.O_CREATE|os.O_APPEND,
0o666,
)
if logOpenErr != nil {
return &types.WrappedErrorMessage{Message: errorMessage, Err: logOpenErr}
}
log.SetOutput(logFile)
logger.File = logFile
logger.Level = level
return nil
}
func (logger *FileLogger) getFilename(directory string, name string) string {
pathString := path.Join(directory, name)
return fmt.Sprintf("%s.log", pathString)
}
func (logger *FileLogger) Log(level LogLevel, str string) {
if level >= logger.Level && logger.Level != LOG_NOTSET {
log.Printf("[%s]: %s", level.String(), str)
}
}
func (logger *FileLogger) Close() {
logger.File.Close()
}
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