Fix AiidaComputerSetup widget. (#305)

The widget wasn't working correctly as during the computer configuration
the value for the ssh port was of type "str". The issue is fixed by converting
the value type to "int".

Additionally, the `_configure_computer` function got slightly simplified by using
the `Computer.configure()` method provided by AiiDA.

aiidalab_widgets_base/computational_resources.py

@@ -697,22 +697,26 @@ def __init__(self, **kwargs):
 
         super().__init__(children, **kwargs)
 
-    def _configure_computer(self):
-        """Create AuthInfo."""
+    def _configure_computer(self, computer):
+        """Configure the computer"""
         sshcfg = parse_sshconfig(self.hostname.value)
         authparams = {
-            "compress": True,
+            "port": int(sshcfg.get("port", 22)),
+            "look_for_keys": True,
             "key_filename": os.path.expanduser(
                 sshcfg.get("identityfile", ["~/.ssh/id_rsa"])[0]
             ),
+            "timeout": 60,
+            "allow_agent": True,
+            "proxy_jump": "",
+            "proxy_command": "",
+            "compress": True,
             "gss_auth": False,
+            "gss_kex": False,
             "gss_deleg_creds": False,
             "gss_host": self.hostname.value,
-            "gss_kex": False,
-            "key_policy": "WarningPolicy",
             "load_system_host_keys": True,
-            "port": sshcfg.get("port", 22),
-            "timeout": 60,
+            "key_policy": "WarningPolicy",
             "use_login_shell": self.use_login_shell.value,
             "safe_interval": self.safe_interval.value,
         }
@@ -728,13 +732,8 @@ def _configure_computer(self):
             authparams["proxy_command"] = sshcfg["proxycommand"]
         elif "proxyjump" in sshcfg:
             authparams["proxy_jump"] = sshcfg["proxyjump"]
-        aiidauser = orm.User.objects.get_default()
 
-        authinfo = orm.AuthInfo(
-            computer=orm.Computer.objects.get(label=self.label.value), user=aiidauser
-        )
-        authinfo.set_auth_params(authparams)
-        authinfo.store()
+        computer.configure(**authparams)
         return True
 
     def on_setup_computer(self, _=None, on_success=None):
@@ -785,7 +784,7 @@ def on_setup_computer(self, _=None, on_success=None):
                 print(f"Unable to store the computer: {err}.")
                 return
 
-            if self._configure_computer():
+            if self._configure_computer(computer):
                 if on_success:
                     on_success()
                 print(f"Computer<{computer.pk}> {computer.label} created")