add "silent" flag to openwebrx-admin

owrx/users.py

@@ -151,15 +151,19 @@ class UserList(object):
         except Exception:
             logger.exception("error while writing users file %s", usersFile)
 
+    def _getUsername(self, user):
+        if isinstance(user, User):
+            return user.name
+        elif isinstance(user, str):
+            return user
+        else:
+            raise ValueError("invalid user type")
+
     def addUser(self, user: User):
         self[user.name] = user
 
     def deleteUser(self, user):
-        if isinstance(user, User):
-            username = user.name
-        else:
-            username = user
-        del self[username]
+        del self[self._getUsername(user)]
 
     def __delitem__(self, key):
         if key not in self.users:

owrxadmin/__main__.py

@@ -2,6 +2,7 @@ from owrx.version import openwebrx_version
 from owrxadmin.commands import NewUser, DeleteUser
 import argparse
 import sys
+import traceback
 
 
 def main():
@@ -10,13 +11,25 @@ def main():
     parser = argparse.ArgumentParser()
     parser.add_argument("command", help="One of the following commands: adduser, removeuser")
     parser.add_argument("--noninteractive", action="store_true", help="Don't ask for any user input (useful for automation)")
+    parser.add_argument("--silent", action="store_true", help="Ignore errors (useful for automation)")
     parser.add_argument("-u", "--user")
     args = parser.parse_args()
 
     if args.command == "adduser":
-        NewUser().run(args)
+        command = NewUser()
     elif args.command == "removeuser":
-        DeleteUser().run(args)
+        command = DeleteUser()
     else:
+        if not args.silent:
             print("Unknown command: {command}".format(command=args.command))
             sys.exit(1)
+        sys.exit(0)
+
+    try:
+        command.run(args)
+    except Exception:
+        if not args.silent:
+            print("Error running command:")
+            traceback.print_exc()
+            sys.exit(1)
+        sys.exit(0)

owrxadmin/commands.py

@@ -27,6 +27,10 @@ class UserCommand(Command, metaclass=ABCMeta):
 class NewUser(UserCommand):
     def run(self, args):
         username = self.getUser(args)
+        userList = UserList()
+        # early test to bypass the password stuff if the user already exists
+        if username in userList:
+            raise KeyError("User {username} already exists".format(username=username))
 
         if args.noninteractive:
             print("Generating password for user {username}...".format(username=username))
@@ -43,7 +47,6 @@ class NewUser(UserCommand):
                 sys.exit(1)
 
         print("Creating user {username}...".format(username=username))
-        userList = UserList()
         user = User(name=username, enabled=True, password=DefaultPasswordClass(password))
         userList.addUser(user)