70 lines
1.7 KiB
Go
70 lines
1.7 KiB
Go
package logrus
|
|
|
|
import (
|
|
"bufio"
|
|
"io"
|
|
"runtime"
|
|
)
|
|
|
|
// Writer at INFO level. See WriterLevel for details.
|
|
func (logger *Logger) Writer() *io.PipeWriter {
|
|
return logger.WriterLevel(InfoLevel)
|
|
}
|
|
|
|
// WriterLevel returns an io.Writer that can be used to write arbitrary text to
|
|
// the logger at the given log level. Each line written to the writer will be
|
|
// printed in the usual way using formatters and hooks. The writer is part of an
|
|
// io.Pipe and it is the callers responsibility to close the writer when done.
|
|
// This can be used to override the standard library logger easily.
|
|
func (logger *Logger) WriterLevel(level Level) *io.PipeWriter {
|
|
return NewEntry(logger).WriterLevel(level)
|
|
}
|
|
|
|
func (entry *Entry) Writer() *io.PipeWriter {
|
|
return entry.WriterLevel(InfoLevel)
|
|
}
|
|
|
|
func (entry *Entry) WriterLevel(level Level) *io.PipeWriter {
|
|
reader, writer := io.Pipe()
|
|
|
|
var printFunc func(args ...interface{})
|
|
|
|
switch level {
|
|
case TraceLevel:
|
|
printFunc = entry.Trace
|
|
case DebugLevel:
|
|
printFunc = entry.Debug
|
|
case InfoLevel:
|
|
printFunc = entry.Info
|
|
case WarnLevel:
|
|
printFunc = entry.Warn
|
|
case ErrorLevel:
|
|
printFunc = entry.Error
|
|
case FatalLevel:
|
|
printFunc = entry.Fatal
|
|
case PanicLevel:
|
|
printFunc = entry.Panic
|
|
default:
|
|
printFunc = entry.Print
|
|
}
|
|
|
|
go entry.writerScanner(reader, printFunc)
|
|
runtime.SetFinalizer(writer, writerFinalizer)
|
|
|
|
return writer
|
|
}
|
|
|
|
func (entry *Entry) writerScanner(reader *io.PipeReader, printFunc func(args ...interface{})) {
|
|
scanner := bufio.NewScanner(reader)
|
|
for scanner.Scan() {
|
|
printFunc(scanner.Text())
|
|
}
|
|
if err := scanner.Err(); err != nil {
|
|
entry.Errorf("Error while reading from Writer: %s", err)
|
|
}
|
|
reader.Close()
|
|
}
|
|
|
|
func writerFinalizer(writer *io.PipeWriter) {
|
|
writer.Close()
|
|
}
|