[enh] Allow to ignore backup hooks execution at creation

data/actionsmap/yunohost.yml

@@ -594,6 +594,9 @@ backup:
                 --hooks:
                     help: List of backup hooks names to execute
                     nargs: "*"
+                --ignore-hooks:
+                    help: Do not execute backup hooks
+                    action: store_true
                 --apps:
                     help: List of application names to backup
                     nargs: "*"

lib/yunohost/backup.py

@@ -43,7 +43,8 @@ logger = getActionLogger('yunohost.backup')
 
 
 def backup_create(name=None, description=None, output_directory=None,
-                  no_compress=False, hooks=[], apps=[], ignore_apps=False):
+                  no_compress=False, ignore_hooks=False, hooks=[],
+                  ignore_apps=False, apps=[]):
     """
     Create a backup local archive
 
@@ -53,6 +54,7 @@ def backup_create(name=None, description=None, output_directory=None,
         output_directory -- Output directory for the backup
         no_compress -- Do not create an archive file
         hooks -- List of backup hooks names to execute
+        ignore_hooks -- Do not execute backup hooks
         apps -- List of application names to backup
         ignore_apps -- Do not backup apps
 
@@ -62,6 +64,11 @@ def backup_create(name=None, description=None, output_directory=None,
 
     tmp_dir = None
 
+    # Validate what to backup
+    if ignore_hooks and ignore_apps:
+        raise MoulinetteError(errno.EINVAL,
+                              m18n.n('backup_action_required'))
+
     # Validate and define backup name
     timestamp = int(time.time())
     if not name:
@@ -126,10 +133,9 @@ def backup_create(name=None, description=None, output_directory=None,
     }
 
     # Run system hooks
+    if not ignore_hooks:
         msignals.display(m18n.n('backup_running_hooks'))
         hooks_ret = hook_callback('backup', hooks, args=[tmp_dir])
-
-    # Add hooks results to the info
         info['hooks'] = hooks_ret['succeed']
 
     # Backup apps

locales/en.json

@@ -139,6 +139,7 @@
     "packages_upgrade_failed" : "Unable to upgrade all packages",
     "system_upgraded" : "System successfully upgraded",
 
+    "backup_action_required" : "You must specify something to backup",
     "backup_output_directory_required" : "You must provide an output directory for the backup",
     "backup_output_directory_forbidden" : "Forbidden output directory",
     "backup_output_directory_not_empty" : "Output directory is not empty",