Added patch to delete old or user-less sessions

patches/delete-old-sessions/delete-old-sessions.go

@@ -0,0 +1,48 @@
+package main
+
+import (
+	"fmt"
+
+	"github.com/aerogo/nano"
+	"github.com/animenotifier/arn"
+	"github.com/fatih/color"
+)
+
+func main() {
+	color.Yellow("Deleting old sessions")
+
+	defer color.Green("Finished.")
+	defer arn.Node.Close()
+
+	// threshold := time.Now().Add(-6 * 30 * 24 * time.Hour).Format(time.RFC3339)
+	count := 0
+	total := 0
+
+	for session := range streamSessions() {
+		data := *session
+		// created := data["created"].(string)
+
+		if data["userId"] == nil { // created < threshold
+			arn.DB.Delete("Session", data["sid"].(string))
+			count++
+		}
+
+		total++
+	}
+
+	fmt.Printf("Deleted %d / %d sessions.\n", count, total)
+}
+
+func streamSessions() chan *arn.Session {
+	channel := make(chan *arn.Session, nano.ChannelBufferSize)
+
+	go func() {
+		for obj := range arn.DB.All("Session") {
+			channel <- obj.(*arn.Session)
+		}
+
+		close(channel)
+	}()
+
+	return channel
+}