From eb2360418396b10179d2f4f9bc12752289627c77 Mon Sep 17 00:00:00 2001
From: Soohyun Kim <hyunysmile@gmail.com>
Date: Tue, 9 Jun 2020 15:02:51 +0200
Subject: [PATCH] METAL-1890 trigger pod restart on proxysql config changes

---
 pkg/utils/proxy/proxysql.go | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/pkg/utils/proxy/proxysql.go b/pkg/utils/proxy/proxysql.go
index 59ea5eb0..0dd2406c 100644
--- a/pkg/utils/proxy/proxysql.go
+++ b/pkg/utils/proxy/proxysql.go
@@ -6,6 +6,7 @@ import (
 	"strconv"
 	"text/template"
 
+	"github.com/kloeckner-i/db-operator/pkg/utils/kci"
 	proxysql "github.com/kloeckner-i/db-operator/pkg/utils/proxy/proxysql"
 
 	v1apps "k8s.io/api/apps/v1"
@@ -23,6 +24,7 @@ type ProxySQL struct {
 	MonitorUserSecretName string
 	Engine                string
 	Labels                map[string]string
+	configCheckSum        string
 }
 
 const sqlPort = 6033
@@ -140,6 +142,9 @@ func (ps *ProxySQL) deploymentSpec() (v1apps.DeploymentSpec, error) {
 		},
 	}
 
+	annotations := make(map[string]string)
+	annotations["checksum/config"] = ps.configCheckSum
+
 	return v1apps.DeploymentSpec{
 		Replicas: &replicas,
 		Selector: &metav1.LabelSelector{
@@ -147,7 +152,8 @@ func (ps *ProxySQL) deploymentSpec() (v1apps.DeploymentSpec, error) {
 		},
 		Template: v1.PodTemplateSpec{
 			ObjectMeta: metav1.ObjectMeta{
-				Labels: ps.Labels,
+				Labels:      ps.Labels,
+				Annotations: annotations,
 			},
 			Spec: v1.PodSpec{
 				InitContainers: []v1.Container{configGenContainer},
@@ -265,6 +271,8 @@ func (ps *ProxySQL) buildConfigMap() (*v1.ConfigMap, error) {
 		"proxysql.cnf.tmpl": outputBuf.String(),
 	}
 
+	ps.configCheckSum = kci.GenerateChecksum(data)
+
 	return &v1.ConfigMap{
 		TypeMeta: metav1.TypeMeta{
 			Kind:       "ConfigMap",