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