Adding app/log/HookWriter.go

app/log/HookWriter.go

@@ -0,0 +1,48 @@
+package log
+
+import (
+	"io"
+
+	log "github.com/sirupsen/logrus"
+)
+
+type HookWriter struct {
+	Writer    io.Writer
+	LogLevels []log.Level
+}
+
+func (hook *HookWriter) Fire(entry *log.Entry) error {
+	line, err := entry.String()
+	if err != nil {
+		return err
+	}
+	_, err = hook.Writer.Write([]byte(line))
+	return err
+}
+
+func (hook *HookWriter) Levels() []log.Level {
+	return hook.LogLevels
+}
+
+func MakeStdHook(writer io.Writer) *HookWriter {
+	return &HookWriter{
+		Writer: writer,
+		LogLevels: []log.Level{
+			log.InfoLevel,
+			log.DebugLevel,
+		},
+	}
+}
+
+func MakeErrorHook(writer io.Writer) *HookWriter {
+	return &HookWriter{
+		Writer: writer,
+		LogLevels: []log.Level{
+			log.ErrorLevel,
+			log.WarnLevel,
+			log.FatalLevel,
+			log.PanicLevel,
+			log.TraceLevel,
+		},
+	}
+}