From dfdece542e4afcd0b8657d81b7e498ad76b26683 Mon Sep 17 00:00:00 2001
From: Eyal <eyal.bar-ilan@nokia.com>
Date: Sun, 22 Apr 2018 13:00:30 +0300
Subject: [PATCH] make sure graph starts after collector on reboot

add kill mode to graph and collector

Change-Id: I5c8ab90c1d2fccd4657bde4f68b07024886509f4
---
 devstack/plugin.sh | 20 +++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

diff --git a/devstack/plugin.sh b/devstack/plugin.sh
index c08753dfb..ec4c26fb4 100644
--- a/devstack/plugin.sh
+++ b/devstack/plugin.sh
@@ -308,8 +308,24 @@ function start_vitrage {
     run_process vitrage-persistor "$VITRAGE_BIN_DIR/vitrage-persistor --config-file $VITRAGE_CONF"
     run_process vitrage-snmp-parsing "$VITRAGE_BIN_DIR/vitrage-snmp-parsing --config-file $VITRAGE_CONF"
 
-    change_systemd_kill_mode vitrage-graph vitrage-collector
+    write_systemd_dependency vitrage-graph vitrage-collector
 
+    change_systemd_kill_mode vitrage-graph
+    change_systemd_kill_mode vitrage-collector
+}
+
+
+function write_systemd_dependency {
+  local service_after=$1
+  local service_before=$2
+  local systemd_service_after="devstack@$service_after.service"
+  local systemd_service_before="devstack@$service_before.service"
+
+  local unitfile_after="$SYSTEMD_DIR/$systemd_service_after"
+
+  iniset -sudo $unitfile_after "Unit" "After" "$systemd_service_before"
+
+  $SYSTEMCTL daemon-reload
 }
 
 function change_systemd_kill_mode {
@@ -318,6 +334,8 @@ function change_systemd_kill_mode {
    local unitfile="$SYSTEMD_DIR/$systemd_service"
 
    iniset -sudo $unitfile "Service" "KillMode" "control-group"
+
+   $SYSTEMCTL daemon-reload
 }
 
 # stop_vitrage() - Stop running processes