simplelog/streamhandler.go

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package iotlog
import (
"io"
)
//StreamHandler writes logs to somewhere
type StreamHandler interface {
Write(p []byte) (n int, err error)
Close() error
}
//StreamHandle writes logs to a specified io Writer, maybe stdout, stderr, etc...
type StreamHandle struct {
w io.Writer
}
func NewStreamHandle(w io.Writer) (*StreamHandle, error) {
h := new(StreamHandle)
h.w = w
return h, nil
}
func (h *StreamHandle) Write(b []byte) (n int, err error) {
return h.w.Write(b)
}
func (h *StreamHandle) Close() error {
return nil
}
//NullHandler does nothing, it discards anything.
type NullHandler struct {
}
func NewNullHandler() (*NullHandler, error) {
return new(NullHandler), nil
}
func (h *NullHandler) Write(b []byte) (n int, err error) {
return len(b), nil
}
func (h *NullHandler) Close() {
}