// New creates new JSONFileLogger which writes to filename
func New(ctx logger.Context) (logger.Logger, error) {
log, err := os.OpenFile(ctx.LogPath, os.O_RDWR|os.O_APPEND|os.O_CREATE, 0600)
if err != nil {
return nil, err
}
var capval int64 = -1
if capacity, ok := ctx.Config["max-size"]; ok {
var err error
capval, err = units.FromHumanSize(capacity)
if err != nil {
return nil, err
}
}
var maxFiles int = 1
if maxFileString, ok := ctx.Config["max-file"]; ok {
maxFiles, err = strconv.Atoi(maxFileString)
if err != nil {
return nil, err
}
if maxFiles < 1 {
return nil, fmt.Errorf("max-files cannot be less than 1.")
}
}
return &JSONFileLogger{
f: log,
buf: bytes.NewBuffer(nil),
ctx: ctx,
capacity: capval,
n: maxFiles,
readers: make(map[*logger.LogWatcher]struct{}),
notifyRotate: pubsub.NewPublisher(0, 1),
}, nil
}
// New creates new JSONFileLogger which writes to filename passed in
// on given context.
func New(ctx logger.Context) (logger.Logger, error) {
var capval int64 = -1
if capacity, ok := ctx.Config["max-size"]; ok {
var err error
capval, err = units.FromHumanSize(capacity)
if err != nil {
return nil, err
}
}
var maxFiles = 1
if maxFileString, ok := ctx.Config["max-file"]; ok {
var err error
maxFiles, err = strconv.Atoi(maxFileString)
if err != nil {
return nil, err
}
if maxFiles < 1 {
return nil, fmt.Errorf("max-file cannot be less than 1")
}
}
writer, err := loggerutils.NewRotateFileWriter(ctx.LogPath, capval, maxFiles)
if err != nil {
return nil, err
}
var extra []byte
if attrs := ctx.ExtraAttributes(nil); len(attrs) > 0 {
var err error
extra, err = json.Marshal(attrs)
if err != nil {
return nil, err
}
}
return &JSONFileLogger{
buf: bytes.NewBuffer(nil),
writer: writer,
readers: make(map[*logger.LogWatcher]struct{}),
extra: extra,
}, nil
}