Add option '--need-lock' to 'yunohost service add' (#530)

* [enh] Add option '--need-lock'

* corection typo

* correction merge

data/actionsmap/yunohost.yml

@@ -1136,6 +1136,10 @@ service:
                     full: --runlevel
                     help: Runlevel priority of the service
                     type: int
+                -n:
+                    full: --need_lock
+                    help: Use this option to prevent deadlocks if the service does invoke yunohost commands.
+                    action: store_true
                 -d:
                     full: --description
                     help: Description of the service

src/yunohost/service.py

@@ -50,7 +50,7 @@ MOULINETTE_LOCK = "/var/run/moulinette_yunohost.lock"
 logger = log.getActionLogger('yunohost.service')
 
 
-def service_add(name, status=None, log=None, runlevel=None, description=None):
+def service_add(name, status=None, log=None, runlevel=None, need_lock=False, description=None):
     """
     Add a custom service
 
@@ -59,8 +59,8 @@ def service_add(name, status=None, log=None, runlevel=None, description=None):
         status -- Custom status command
         log -- Absolute path to log file to display
         runlevel -- Runlevel priority of the service
+        need_lock -- Use this option to prevent deadlocks if the service does invoke yunohost commands.
         description -- description of the service
-
     """
     services = _get_services()
 
@@ -75,6 +75,9 @@ def service_add(name, status=None, log=None, runlevel=None, description=None):
     if runlevel is not None:
         services[name]['runlevel'] = runlevel
 
+    if need_lock:
+        services[name]['need_lock'] = True
+
     if description is not None:
         services[name]['description'] = description