Add support for execution_context_class in webob

Author: kiendang

graphql_server/webob/graphqlview.py

@@ -36,6 +36,7 @@ class GraphQLView:
     graphiql_html_title = None
     middleware = None
     validation_rules = None
+    execution_context_class = None
     batch = False
     enable_async = False
     subscriptions = None
@@ -81,6 +82,9 @@ def get_validation_rules(self):
             return specified_rules
         return self.validation_rules
 
+    def get_execution_context_class(self):
+        return self.execution_context_class
+
     def dispatch_request(self, request):
         try:
             request_method = request.method.lower()
@@ -107,6 +111,7 @@ def dispatch_request(self, request):
                 context_value=self.get_context(request),
                 middleware=self.get_middleware(),
                 validation_rules=self.get_validation_rules(),
+                execution_context_class=self.get_execution_context_class(),
             )
             result, status_code = encode_execution_results(
                 execution_results,

tests/webob/test_graphqlview.py

@@ -3,6 +3,7 @@
 
 import pytest
 
+from ..utils import RepeatExecutionContext
 from .app import Client, url_string
 
 
@@ -563,3 +564,17 @@ def test_batch_allows_post_with_operation_name(client, settings):
             "data": {"test": "Hello World", "shared": "Hello Everyone"}
         }
     ]
+
+
+@pytest.mark.parametrize(
+    "settings", [dict(execution_context_class=RepeatExecutionContext)]
+)
+def test_custom_execution_context_class(client):
+    response = client.post(
+        url_string(),
+        data=json_dump_kwarg(query="{test}"),
+        content_type="application/json",
+    )
+
+    assert response.status_code == 200
+    assert response_json(response) == {"data": {"test": "Hello WorldHello World"}}