From c509106aeca09405ea0aed22e4566270c1280e6c Mon Sep 17 00:00:00 2001
From: mykola2312 <49044616+mykola2312@users.noreply.github.com>
Date: Fri, 24 Jan 2025 22:44:30 +0200
Subject: [PATCH] configure logging to file

---
 main.go | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)

diff --git a/main.go b/main.go
index 9d430d6..238bca1 100644
--- a/main.go
+++ b/main.go
@@ -12,6 +12,8 @@ import (
 	"os/signal"
 	"strings"
 	"syscall"
+
+	"github.com/op/go-logging"
 )
 
 var isNode bool
@@ -23,6 +25,12 @@ var justNodeId bool
 var daemonize bool
 var pidPath string
 
+type LogConfig struct {
+	XMLName xml.Name `xml:"log"`
+	Level   string   `xml:"level,attr"`
+	LogPath string   `xml:",innerxml"`
+}
+
 type NodeConfig struct {
 	XMLName   xml.Name `xml:"node"`
 	KeyStore  string   `xml:"keystore"`
@@ -36,6 +44,42 @@ type NodeConfig struct {
 	} `xml:"neighbor"`
 
 	RPCEndpoints []string `xml:"rpc"`
+
+	Log LogConfig `xml:"log"`
+}
+
+func setupLogging(log LogConfig) {
+	var level logging.Level
+	switch log.Level {
+	case "critical":
+		level = logging.CRITICAL
+	case "error":
+		level = logging.ERROR
+	case "warning":
+		level = logging.WARNING
+	case "notice":
+		level = logging.NOTICE
+	case "info":
+		level = logging.INFO
+	case "debug":
+		level = logging.DEBUG
+	default:
+		level = logging.INFO
+	}
+
+	logging.SetLevel(level, "")
+
+	// if log tag has file path, then it open file in append mode,
+	// otherwise it will use default stdout logger
+	if log.LogPath != "" {
+		logFile, err := os.OpenFile(log.LogPath, os.O_WRONLY|os.O_CREATE|os.O_APPEND, os.FileMode(0600))
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "failed to open log file: %v\n", err)
+			os.Exit(1)
+		}
+
+		logging.SetBackend(logging.NewLogBackend(logFile, "", 0))
+	}
 }
 
 func bootstrapNode() {
@@ -84,6 +128,9 @@ func nodeMain() {
 		os.Exit(1)
 	}
 
+	// setup logging
+	setupLogging(config.Log)
+
 	// check presense of keystore and id in config
 	if config.KeyStore == "" {
 		fmt.Fprintln(os.Stderr, "no keystore path specified!")
@@ -170,6 +217,9 @@ func nodeMain() {
 		}
 	}
 
+	// start node
+	node.Start()
+
 	// TODO: daemonize
 
 	// register go channel to receive unix signals,