[python-experimental] Enhance octet-stream deserialize

Created by: EltonChou

@spacether

• Add a method to extract filename when the headers of octet-stream resopnse didn't provide the filename.
• Add test for the method.

PR checklist

• Read the contribution guidelines.
• Pull Request title clearly describes the work in the pull request and Pull Request description provides details about how to validate the work. Missing information here may result in delayed response from the community.
• Run the following to build the project and update samples:

  ./mvnw clean package 
  ./bin/generate-samples.sh
  ./bin/utils/export_docs_generators.sh

  Commit all changed files. This is important, as CI jobs will verify all generator outputs of your HEAD commit as it would merge with master. These must match the expectations made by your contribution. You may regenerate an individual generator by passing the relevant config(s) as an argument to the script, for example ./bin/generate-samples.sh bin/configs/java*. For Windows users, please run the script in Git BASH.
• File the PR against the correct branch: master (6.1.0) (minor release - breaking changes with fallbacks), 7.0.x (breaking changes without fallbacks)
• If your PR is targeting a particular programming language, @mention the technical committee members, so they are more likely to review the pull request.

modules/openapi-generator/src/main/resources/python-experimental/api_client.handlebars

@@ -15,7 +15,7 @@ import tempfile
 import typing
 import urllib3
 from urllib3._collections import HTTPHeaderDict
-from urllib.parse import quote
+from urllib.parse import urlparse, quote
 from urllib3.fields import RequestField as RequestFieldBase
 
 {{#if tornado}}
@@ -832,6 +832,19 @@ class OpenApiResponse(JSONDetector):
         # python must be >= 3.9 so we can pass in bytes into json.loads
         return json.loads(response.data)
 
+    @staticmethod
+    def __file_name_from_response_url(response_url: typing.Optional[str]) -> typing.Optional[str]:
+        if response_url is None:
+            return None
+        url_path = urlparse(response_url).path
+        if url_path:
+            path_basename = os.path.basename(url_path)
+            if path_basename:
+                _filename, ext = os.path.splitext(path_basename)
+                if ext:
+                    return path_basename
+        return None
+
     @classmethod
     def __file_name_from_content_disposition(cls, content_disposition: typing.Optional[str]) -> typing.Optional[str]:
         if content_disposition is None:
@@ -851,13 +864,16 @@ class OpenApiResponse(JSONDetector):
             a file will be written and returned
         """
         if response.supports_chunked_reads():
-            file_name = self.__file_name_from_content_disposition(response.headers.get('content-disposition'))
+            file_name = (
+                self.__file_name_from_content_disposition(response.headers.get('content-disposition'))
+                or self.__file_name_from_response_url(response.geturl())
+            )
 
             if file_name is None:
                 _fd, path = tempfile.mkstemp()
             else:
                 path = os.path.join(tempfile.gettempdir(), file_name)
-            # TODO get file_name from the filename at the end of the url if it exists
+
             with open(path, 'wb') as new_file:
                 chunk_size = 1024
                 while True:

modules/openapi-generator/src/main/resources/python-experimental/api_client.handlebars

@@ -15,7 +15,7 @@ import tempfile
 import typing
 import urllib3
 from urllib3._collections import HTTPHeaderDict
-from urllib.parse import quote
+from urllib.parse import urlparse, quote
 from urllib3.fields import RequestField as RequestFieldBase
 
 {{#if tornado}}
@@ -832,6 +832,19 @@ class OpenApiResponse(JSONDetector):
         # python must be >= 3.9 so we can pass in bytes into json.loads
         return json.loads(response.data)
 
+    @staticmethod
+    def __file_name_from_response_url(response_url: typing.Optional[str]) -> typing.Optional[str]:
+        if response_url is None:
+            return None
+        url_path = urlparse(response_url).path
+        if url_path:
+            path_basename = os.path.basename(url_path)
+            if path_basename:
+                _filename, ext = os.path.splitext(path_basename)
+                if ext:
+                    return path_basename
+        return None
+
     @classmethod
     def __file_name_from_content_disposition(cls, content_disposition: typing.Optional[str]) -> typing.Optional[str]:
         if content_disposition is None:
@@ -851,13 +864,16 @@ class OpenApiResponse(JSONDetector):
             a file will be written and returned
         """
         if response.supports_chunked_reads():
-            file_name = self.__file_name_from_content_disposition(response.headers.get('content-disposition'))
+            file_name = (
+                self.__file_name_from_content_disposition(response.headers.get('content-disposition'))
+                or self.__file_name_from_response_url(response.geturl())
+            )
 
             if file_name is None:
                 _fd, path = tempfile.mkstemp()
             else:
                 path = os.path.join(tempfile.gettempdir(), file_name)
-            # TODO get file_name from the filename at the end of the url if it exists
+
             with open(path, 'wb') as new_file:
                 chunk_size = 1024
                 while True:

samples/client/petstore/elixir/lib/openapi_petstore/api/another_fake.ex

-# NOTE: This file is auto generated by OpenAPI Generator 6.1.0-SNAPSHOT (https://openapi-generator.tech).
+# NOTE: This file is auto generated by OpenAPI Generator 6.1.1-SNAPSHOT (https://openapi-generator.tech).
 # Do not edit this file manually.
 
 defmodule OpenapiPetstore.Api.AnotherFake do

samples/client/petstore/elixir/lib/openapi_petstore/api/default.ex

-# NOTE: This file is auto generated by OpenAPI Generator 6.1.0-SNAPSHOT (https://openapi-generator.tech).
+# NOTE: This file is auto generated by OpenAPI Generator 6.1.1-SNAPSHOT (https://openapi-generator.tech).
 # Do not edit this file manually.
 
 defmodule OpenapiPetstore.Api.Default do

samples/client/petstore/elixir/lib/openapi_petstore/api/fake.ex

-# NOTE: This file is auto generated by OpenAPI Generator 6.1.0-SNAPSHOT (https://openapi-generator.tech).
+# NOTE: This file is auto generated by OpenAPI Generator 6.1.1-SNAPSHOT (https://openapi-generator.tech).
 # Do not edit this file manually.
 
 defmodule OpenapiPetstore.Api.Fake do

samples/client/petstore/elixir/lib/openapi_petstore/api/fake_classname_tags123.ex

-# NOTE: This file is auto generated by OpenAPI Generator 6.1.0-SNAPSHOT (https://openapi-generator.tech).
+# NOTE: This file is auto generated by OpenAPI Generator 6.1.1-SNAPSHOT (https://openapi-generator.tech).
 # Do not edit this file manually.
 
 defmodule OpenapiPetstore.Api.FakeClassnameTags123 do

samples/client/petstore/elixir/lib/openapi_petstore/api/pet.ex

-# NOTE: This file is auto generated by OpenAPI Generator 6.1.0-SNAPSHOT (https://openapi-generator.tech).
+# NOTE: This file is auto generated by OpenAPI Generator 6.1.1-SNAPSHOT (https://openapi-generator.tech).
 # Do not edit this file manually.
 
 defmodule OpenapiPetstore.Api.Pet do

samples/client/petstore/elixir/lib/openapi_petstore/api/store.ex

-# NOTE: This file is auto generated by OpenAPI Generator 6.1.0-SNAPSHOT (https://openapi-generator.tech).
+# NOTE: This file is auto generated by OpenAPI Generator 6.1.1-SNAPSHOT (https://openapi-generator.tech).
 # Do not edit this file manually.
 
 defmodule OpenapiPetstore.Api.Store do

samples/client/petstore/elixir/lib/openapi_petstore/api/user.ex

-# NOTE: This file is auto generated by OpenAPI Generator 6.1.0-SNAPSHOT (https://openapi-generator.tech).
+# NOTE: This file is auto generated by OpenAPI Generator 6.1.1-SNAPSHOT (https://openapi-generator.tech).
 # Do not edit this file manually.
 
 defmodule OpenapiPetstore.Api.User do

samples/client/petstore/elixir/lib/openapi_petstore/model/_foo_get_default_response.ex

-# NOTE: This file is auto generated by OpenAPI Generator 6.1.0-SNAPSHOT (https://openapi-generator.tech).
+# NOTE: This file is auto generated by OpenAPI Generator 6.1.1-SNAPSHOT (https://openapi-generator.tech).
 # Do not edit this file manually.
 
 defmodule OpenapiPetstore.Model.FooGetDefaultResponse do

samples/client/petstore/elixir/lib/openapi_petstore/model/_special_model_name_.ex

-# NOTE: This file is auto generated by OpenAPI Generator 6.1.0-SNAPSHOT (https://openapi-generator.tech).
+# NOTE: This file is auto generated by OpenAPI Generator 6.1.1-SNAPSHOT (https://openapi-generator.tech).
 # Do not edit this file manually.
 
 defmodule OpenapiPetstore.Model.SpecialModelName do

samples/client/petstore/elixir/lib/openapi_petstore/model/additional_properties_class.ex

-# NOTE: This file is auto generated by OpenAPI Generator 6.1.0-SNAPSHOT (https://openapi-generator.tech).
+# NOTE: This file is auto generated by OpenAPI Generator 6.1.1-SNAPSHOT (https://openapi-generator.tech).
 # Do not edit this file manually.
 
 defmodule OpenapiPetstore.Model.AdditionalPropertiesClass do

samples/client/petstore/elixir/lib/openapi_petstore/model/all_of_with_single_ref.ex

-# NOTE: This file is auto generated by OpenAPI Generator 6.1.0-SNAPSHOT (https://openapi-generator.tech).
+# NOTE: This file is auto generated by OpenAPI Generator 6.1.1-SNAPSHOT (https://openapi-generator.tech).
 # Do not edit this file manually.
 
 defmodule OpenapiPetstore.Model.AllOfWithSingleRef do