From cf5ccfb00d9715f051dd001cdef5ab2ba9b89086 Mon Sep 17 00:00:00 2001
From: Nikhil Malik <nikhil.malik@netlox.io>
Date: Tue, 27 Feb 2024 10:48:50 +0900
Subject: [PATCH] BFD config auto-apply on restart

---
 api/loxinlp/nlp.go | 21 +++++++++++++++++++++
 loxinet/loxinet.go |  9 ++++++++-
 2 files changed, 29 insertions(+), 1 deletion(-)

diff --git a/api/loxinlp/nlp.go b/api/loxinlp/nlp.go
index dd8296c87..a84c1b381 100644
--- a/api/loxinlp/nlp.go
+++ b/api/loxinlp/nlp.go
@@ -217,6 +217,27 @@ func applyEPConfig() bool {
 	return true
 }
 
+func ApplyBFDConfig() bool {
+	var resp struct {
+		Attr []cmn.BFDMod `json:"Attr"`
+	}
+	byteBuf, err := os.ReadFile("/etc/loxilb/BFDconfig.txt")
+	if err != nil {
+		fmt.Println(err.Error())
+		return false
+	}
+
+	// Unmashal to Json
+	if err := json.Unmarshal(byteBuf, &resp); err != nil {
+		fmt.Printf("Error: Failed to unmarshal File: (%s)\n", err.Error())
+		return false
+	}
+	for _, bfd := range resp.Attr {
+		hooks.NetBFDAdd(&bfd)
+	}
+	return true
+}
+
 func applyRoutes(name string) {
 	tk.LogIt(tk.LogDebug, "[NLP] Applying Route Config for %s \n", name)
 	command := "loxicmd apply --per-intf " + name + " -r -c /etc/loxilb/ipconfig/"
diff --git a/loxinet/loxinet.go b/loxinet/loxinet.go
index 014eb634c..90868079c 100644
--- a/loxinet/loxinet.go
+++ b/loxinet/loxinet.go
@@ -301,9 +301,16 @@ func loxiNetInit() {
 		prometheus.Init()
 	}
 
-	if !opts.Opts.BgpPeerMode {
+	if !opts.Opts.BgpPeerMode && clusterMode {
 		// Spawn CI maintenance application
 		mh.has.CISpawn()
+		if _, err := os.Stat("/etc/loxilb/BFDconfig.txt"); errors.Is(err, os.ErrNotExist) {
+			if err != nil {
+				tk.LogIt(tk.LogInfo, "[Init] No BFD config file : %s \n", err.Error())
+			}
+		} else {
+			nlp.ApplyBFDConfig()
+		}
 	}
 	// Initialize the loxinet global ticker(s)
 	mh.tDone = make(chan bool)