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package target
import (
"io"
"io/ioutil"
"github.com/mattermost/logr"
)
// Writer outputs log records to any `io.Writer`.
type Writer struct {
logr.Basic
out io.Writer
}
// NewWriterTarget creates a target capable of outputting log records to an io.Writer.
func NewWriterTarget(filter logr.Filter, formatter logr.Formatter, out io.Writer, maxQueue int) *Writer {
if out == nil {
out = ioutil.Discard
}
w := &Writer{out: out}
w.Basic.Start(w, w, filter, formatter, maxQueue)
return w
}
// Write converts the log record to bytes, via the Formatter,
// and outputs to the io.Writer.
func (w *Writer) Write(rec *logr.LogRec) error {
_, stacktrace := w.IsLevelEnabled(rec.Level())
buf := rec.Logger().Logr().BorrowBuffer()
defer rec.Logger().Logr().ReleaseBuffer(buf)
buf, err := w.Formatter().Format(rec, stacktrace, buf)
if err != nil {
return err
}
_, err = w.out.Write(buf.Bytes())
return err
}
|
