From 979dfb6ee7675344fa6fed47d9f6b377f45a1121 Mon Sep 17 00:00:00 2001
From: Anirudh Goel <Anirudhgoel.delhi@gmail.com>
Date: Fri, 10 Mar 2023 17:06:08 +0530
Subject: [PATCH] Do not exit if pgpool is unreachable on startup

If pgpool is down on exporter startup, keep waiting for pgpool to be up
---
 pgpool2_exporter.go | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/pgpool2_exporter.go b/pgpool2_exporter.go
index 42aad06..ada8043 100644
--- a/pgpool2_exporter.go
+++ b/pgpool2_exporter.go
@@ -227,9 +227,13 @@ func NewExporter(dsn string, namespace string) *Exporter {
 
 	db, err := getDBConn(dsn)
 
-	if err != nil {
+	// If pgpool is down on exporter startup, keep waiting for pgpool to be up
+	for err != nil {
 		level.Error(Logger).Log("err", err)
-		os.Exit(1)
+		level.Info(Logger).Log("info", "Sleeping for 5 seconds before trying to connect again")
+		time.Sleep(5 * time.Second)
+
+		db, err = getDBConn(dsn)
 	}
 
 	return &Exporter{