add global log to file

lib/config.go

@@ -16,6 +16,7 @@ type NotifyConfig struct {
 		JID      string `toml:"jid"`
 		Password string `toml:"password"`
 	} `toml:"xmpp"`
+	File string `toml:"file"`
 }
 
 type ReceiveConfig struct {

notify/all/main.go

@@ -1,5 +1,6 @@
 package all
 
 import (
+	_ "dev.sum7.eu/genofire/logmania/notify/file"
 	_ "dev.sum7.eu/genofire/logmania/notify/xmpp"
 )

notify/file/main.go

@@ -0,0 +1,65 @@
+package xmpp
+
+import (
+	"os"
+
+	log "github.com/sirupsen/logrus"
+
+	"dev.sum7.eu/genofire/logmania/bot"
+	"dev.sum7.eu/genofire/logmania/database"
+	"dev.sum7.eu/genofire/logmania/lib"
+	"dev.sum7.eu/genofire/logmania/notify"
+)
+
+const (
+	proto = "file:"
+)
+
+var logger = log.WithField("notify", proto)
+
+type Notifier struct {
+	notify.Notifier
+	formatter log.Formatter
+	file      *os.File
+	path      string
+}
+
+func Init(config *lib.NotifyConfig, db *database.DB, bot *bot.Bot) notify.Notifier {
+	logger.Info("startup")
+	if config.File == "" {
+		return nil
+	}
+	file, err := os.OpenFile(config.File, os.O_APPEND|os.O_WRONLY|os.O_CREATE, 0600)
+	if err != nil {
+		logger.Errorf("could not open file: %s", err.Error())
+		return nil
+	}
+
+	return &Notifier{
+		formatter: &log.JSONFormatter{},
+		file:      file,
+		path:      config.File,
+	}
+}
+
+func (n *Notifier) Send(e *log.Entry) error {
+	text, err := n.formatter.Format(e)
+	if err != nil {
+		return err
+	}
+	_, err = n.file.Write(text)
+	if err != nil {
+		logger.Warnf("could not write to logfile: %s - try to reopen it", err.Error())
+		file, err := os.OpenFile(n.path, os.O_APPEND|os.O_WRONLY|os.O_CREATE, 0600)
+		if err != nil {
+			return err
+		}
+		n.file = file
+		_, err = n.file.Write(text)
+	}
+	return err
+}
+
+func init() {
+	notify.AddNotifier(Init)
+}

notify/xmpp/main.go

@@ -28,7 +28,7 @@ type Notifier struct {
 	client    *xmpp_client.Client
 	channels  map[string]bool
 	db        *database.DB
-	formatter *log.TextFormatter
+	formatter log.Formatter
 }
 
 func Init(config *lib.NotifyConfig, db *database.DB, bot *bot.Bot) notify.Notifier {