🚨 Fix linting issues

Author: jemrobinson

apricot/apricot_server.py

@@ -1,9 +1,9 @@
 import inspect
 import sys
-from typing import Any, cast, Optional
+from typing import Any, Optional, cast
 
 from twisted.internet import reactor, task
-from twisted.internet.endpoints import serverFromString, quoteStringArgument
+from twisted.internet.endpoints import quoteStringArgument, serverFromString
 from twisted.internet.interfaces import IReactorCore, IStreamServerEndpoint
 from twisted.python import log
 
@@ -71,12 +71,18 @@ def __init__(
         if self.debug:
             log.msg("Creating an LDAPServerFactory.")
         factory = OAuthLDAPServerFactory(
-            domain, oauth_client, background_refresh=background_refresh, enable_mirrored_groups=enable_mirrored_groups, refresh_interval=refresh_interval
+            domain,
+            oauth_client,
+            background_refresh=background_refresh,
+            enable_mirrored_groups=enable_mirrored_groups,
+            refresh_interval=refresh_interval,
         )
 
         if background_refresh:
             if self.debug:
-                log.msg(f"Starting background refresh (interval={factory.adaptor.refresh_interval})")
+                log.msg(
+                    f"Starting background refresh (interval={factory.adaptor.refresh_interval})"
+                )
             loop = task.LoopingCall(factory.adaptor.refresh)
             loop.start(factory.adaptor.refresh_interval)
 
@@ -88,11 +94,18 @@ def __init__(
 
         # Attach a listening endpoint
         if tls_port:
-            if not (tls_certificate or tls_private_key):
-                raise ValueError("No TLS certificate or private key provided. Make sure you provide these parameters or disable TLS by not providing the TLS port")
+            if not tls_certificate:
+                msg = "No TLS certificate provided. Please provide one with --tls-certificate or disable TLS by not providing the --tls-port argument."
+                raise ValueError(msg)
+            if not tls_private_key:
+                msg = "No TLS private key provided. Please provide one with --tls-private-key or disable TLS by not providing the --tls-port argument."
+                raise ValueError(msg)
             if self.debug:
                 log.msg("Attaching a listening endpoint (TLS).")
-            ssl_endpoint: IStreamServerEndpoint = serverFromString(reactor, f"ssl:{tls_port}:privateKey={quoteStringArgument(tls_private_key)}:certKey={quoteStringArgument(tls_certificate)}")
+            ssl_endpoint: IStreamServerEndpoint = serverFromString(
+                reactor,
+                f"ssl:{tls_port}:privateKey={quoteStringArgument(tls_private_key)}:certKey={quoteStringArgument(tls_certificate)}",
+            )
             ssl_endpoint.listen(factory)
 
         # Load the Twisted reactor

apricot/ldap/oauth_ldap_server_factory.py

@@ -9,7 +9,13 @@
 
 class OAuthLDAPServerFactory(ServerFactory):
     def __init__(
-        self, domain: str, oauth_client: OAuthClient, *, background_refresh: bool, enable_mirrored_groups: bool, refresh_interval: int,
+        self,
+        domain: str,
+        oauth_client: OAuthClient,
+        *,
+        background_refresh: bool,
+        enable_mirrored_groups: bool,
+        refresh_interval: int,
     ):
         """
         Initialise an OAuthLDAPServerFactory
@@ -22,7 +28,11 @@ def __init__(
         """
         # Create an LDAP lookup tree
         self.adaptor = OAuthLDAPTree(
-            domain, oauth_client, background_refresh=background_refresh, enable_mirrored_groups=enable_mirrored_groups, refresh_interval=refresh_interval
+            domain,
+            oauth_client,
+            background_refresh=background_refresh,
+            enable_mirrored_groups=enable_mirrored_groups,
+            refresh_interval=refresh_interval,
         )
 
     def __repr__(self) -> str:

apricot/ldap/oauth_ldap_tree.py

@@ -20,7 +20,7 @@ def __init__(
         *,
         background_refresh: bool,
         enable_mirrored_groups: bool,
-        refresh_interval,
+        refresh_interval: int,
     ) -> None:
         """
         Initialise an OAuthLDAPTree
@@ -50,15 +50,20 @@ def root(self) -> OAuthLDAPEntry:
         Lazy-load the LDAP tree on request
 
         @return: An OAuthLDAPEntry for the tree
+
+        @raises: ValueError.
         """
         if not self.background_refresh:
             self.refresh()
+        if not self.root_:
+            msg = "LDAP tree could not be loaded"
+            raise ValueError(msg)
         return self.root_
 
-    def refresh(self):
+    def refresh(self) -> None:
         if (
-                not self.root_
-                or (time.monotonic() - self.last_update) > self.refresh_interval
+            not self.root_
+            or (time.monotonic() - self.last_update) > self.refresh_interval
         ):
             # Update users and groups from the OAuth server
             log.msg("Retrieving OAuth data.")