From bc0c0bbf52a13855481e82a958cba833de45d310 Mon Sep 17 00:00:00 2001
From: Daniil Baturin <daniil@vyos.io>
Date: Tue, 13 Jul 2021 08:07:58 -0500
Subject: T3663: use inotify-based watching for the IPsec process restart.

---
 src/conf_mode/ipsec-settings.py | 23 +++++++++++------------
 1 file changed, 11 insertions(+), 12 deletions(-)

(limited to 'src')

diff --git a/src/conf_mode/ipsec-settings.py b/src/conf_mode/ipsec-settings.py
index a65e8b567..b59063fcd 100755
--- a/src/conf_mode/ipsec-settings.py
+++ b/src/conf_mode/ipsec-settings.py
@@ -22,7 +22,7 @@ from sys import exit
 
 from vyos.config import Config
 from vyos import ConfigError
-from vyos.util import call
+from vyos.util import call, wait_for_file_write_complete
 from vyos.template import render
 
 from vyos import airbag
@@ -203,17 +203,16 @@ def generate(data):
         remove_confs(delim_ipsec_l2tp_begin, delim_ipsec_l2tp_end, ipsec_conf_file)
 
 def restart_ipsec():
-    call('ipsec restart >&/dev/null')
-    # counter for apply swanctl config
-    counter = 10
-    while counter <= 10:
-        if os.path.exists(charon_pidfile):
-            call('swanctl -q >&/dev/null')
-            break
-        counter -=1
-        sleep(1)
-        if counter == 0:
-            raise ConfigError('VPN configuration error: IPSec is not running.')
+    try:
+        wait_for_file_write_complete(charon_pidfile,
+          pre_hook=(lambda: call('ipsec restart >&/dev/null')),
+          timeout=10)
+
+        # Force configuration load
+        call('swanctl -q >&/dev/null')
+
+    except OSError:
+        raise ConfigError('VPN configuration error: IPSec process did not start.')
 
 def apply(data):
     # Restart IPSec daemon
-- 
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