[Python] Add Flag to Allow Ignoring Operation Servers (#18981)

* [Python] Add Flag to Allow Ignoring Operation Servers

* generate samples

* add tests

samples/openapi3/client/petstore/python-aiohttp/petstore_api/api_client.py

@@ -230,7 +230,7 @@ class ApiClient:
             body = self.sanitize_for_serialization(body)
 
         # request url
-        if _host is None:
+        if _host is None or self.configuration.ignore_operation_servers:
             url = self.configuration.host + resource_path
         else:
             # use server/host defined in path or operation instead

samples/openapi3/client/petstore/python-aiohttp/petstore_api/configuration.py

@@ -31,6 +31,9 @@ class Configuration:
     """This class contains various settings of the API client.
 
     :param host: Base url.
+    :param ignore_operation_servers
+      Boolean to ignore operation servers for the API client.
+      Config will use `host` as the base url regardless of the operation servers.
     :param api_key: Dict to store API key(s).
       Each entry in the dict specifies an API key.
       The dict key is the name of the security scheme in the OAS specification.
@@ -143,6 +146,7 @@ conf = petstore_api.Configuration(
                  signing_info=None,
                  server_index=None, server_variables=None,
                  server_operation_index=None, server_operation_variables=None,
+                 ignore_operation_servers=False,
                  ssl_ca_cert=None,
                  retries=None,
                  *,
@@ -161,6 +165,9 @@ conf = petstore_api.Configuration(
         self.server_operation_variables = server_operation_variables or {}
         """Default server variables
         """
+        self.ignore_operation_servers = ignore_operation_servers
+        """Ignore operation servers
+        """
         self.temp_folder_path = None
         """Temp file folder for downloading files
         """

samples/openapi3/client/petstore/python-aiohttp/tests/test_api_client.py

@@ -8,6 +8,7 @@ import weakref
 from tests.util import async_test
 import petstore_api
 
+HOST = 'http://localhost/v2'
 
 class TestApiClient(unittest.TestCase):
 
@@ -20,3 +21,31 @@ class TestApiClient(unittest.TestCase):
             rest_pool_ref = client.rest_client.pool_manager
 
         self.assertTrue(rest_pool_ref.closed)
+
+    @async_test
+    async def test_ignore_operation_servers(self):
+        config = petstore_api.Configuration(host=HOST)
+        client = petstore_api.ApiClient(config)
+        user_api_instance = petstore_api.api.user_api.UserApi(client)
+
+        config_ignore = petstore_api.Configuration(host=HOST, ignore_operation_servers=True)
+        client_ignore = petstore_api.ApiClient(config_ignore)
+        user_api_instance_ignore = petstore_api.api.user_api.UserApi(client_ignore)
+
+        params_to_serialize = {
+            'user': petstore_api.User(id=1, username='test'),
+            '_request_auth': None,
+            '_content_type': 'application/json',
+            '_headers': None,
+            '_host_index': 0
+        }
+
+        # operation servers should be used
+        _, url, *_ = user_api_instance._create_user_serialize(**params_to_serialize)
+        self.assertEqual(client.configuration.host, HOST)
+        self.assertEqual(url, 'http://petstore.swagger.io/v2/user')
+
+        # operation servers should be ignored
+        _, url_ignore, *_ = user_api_instance_ignore._create_user_serialize(**params_to_serialize)
+        self.assertEqual(client.configuration.host, HOST)
+        self.assertEqual(url_ignore, HOST + '/user')