chore(helm): Waiting for postgres to be up

Signed-off-by: rjshrjndrn <rjshrjndrn@gmail.com>

scripts/helmcharts/openreplay/templates/job.yaml

@@ -63,6 +63,27 @@ spec:
             git checkout {{ default .Chart.AppVersion .Values.dbMigrationUpstreamBranch }} || exit 10
             {{ .Values.global.dbMigrationPreCommand | default "" }}
 
+            exit_count=0
+            error_connection=1
+
+            while [ $exit_count -le 20 ];do
+              nc -zv {{.Values.global.postgresql.postgresqlHost}} {{.Values.global.postgresql.postgresqlPort}} -w 1
+              if [ $? -ne 0 ]; then
+                echo "[info] postgresql is not up; retrying in 5 seconds"
+                sleep 4
+                exit_count=$(($exit_count+1))
+                echo $exit_count
+              else
+                error_connection=0
+                break
+              fi
+            done
+
+            if [ $error_connection -eq 1 ]; then
+              echo "[error] clickhouse is not running. Check kubectl get po -n db; exiting"
+              exit 100
+            fi
+
             # Checking variable is empty. Shell independant method.
             if [ "x$ENTERPRISE_EDITION_LICENSE" != "x" ]; then
               exit_count=0