From 1a1842f7e2f80569ff909dd20664b8a4f1244f52 Mon Sep 17 00:00:00 2001
From: Shayan Patel <shayan.patel@canonical.com>
Date: Fri, 5 Jul 2024 12:36:46 +0000
Subject: [PATCH] Add ability to customize router exporter listen port

---
 snap/local/start-mysql-router-exporter.sh | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/snap/local/start-mysql-router-exporter.sh b/snap/local/start-mysql-router-exporter.sh
index d4533b7..3abd78c 100755
--- a/snap/local/start-mysql-router-exporter.sh
+++ b/snap/local/start-mysql-router-exporter.sh
@@ -14,6 +14,7 @@ EXPORTER_OPTS=(
 EXPORTER_PATH="/usr/bin/mysqlrouter_exporter"
 
 if [ -n "$SNAP" ]; then
+    MYSQLROUTER_EXPORTER_LISTEN_PORT="$(snapctl get mysqlrouter-exporter.listen-port)"
     MYSQLROUTER_EXPORTER_USER="$(snapctl get mysqlrouter-exporter.user)"
     MYSQLROUTER_EXPORTER_PASS="$(snapctl get mysqlrouter-exporter.password)"
     MYSQLROUTER_EXPORTER_URL="$(snapctl get mysqlrouter-exporter.url)"
@@ -60,6 +61,11 @@ if [ -z "${MYSQLROUTER_EXPORTER_SERVICE_NAME}" ]; then
     exit 1
 fi
 
+# Modify the listen-port if supplied
+if [ -n "${MYSQLROUTER_EXPORTER_LISTEN_PORT}" ]; then
+    EXPORTER_OPTS+=("--listen-port=${MYSQLROUTER_EXPORTER_LISTEN_PORT}")
+fi
+
 # Execute the mysqlrouter_exporter command 
 if [ -n "${SNAP}" ]; then
     SETPRIV_OPTIONS=(