Merge pull request #4110 from jestabro/distinct-api

http-api: T6736: move REST API to a node distinct from GraphQL API

1 files changed, 77 insertions, 0 deletions

diff --git a/src/services/api/graphql/routers.py b/src/services/api/graphql/routers.py
new file mode 100644
index 000000000..ed3ee1e8c
--- /dev/null
+++ b/src/services/api/graphql/routers.py
@@ -0,0 +1,77 @@
+# Copyright 2024 VyOS maintainers and contributors <maintainers@vyos.io>
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with this library.  If not, see <http://www.gnu.org/licenses/>.
+
+# pylint: disable=import-outside-toplevel
+
+
+import typing
+
+from ariadne.asgi import GraphQL
+from starlette.middleware.cors import CORSMiddleware
+
+
+if typing.TYPE_CHECKING:
+    from fastapi import FastAPI
+
+
+def graphql_init(app: 'FastAPI'):
+    from ..session import SessionState
+    from .libs.token_auth import get_user_context
+
+    state = SessionState()
+
+    # import after initializaion of state
+    from .bindings import generate_schema
+
+    schema = generate_schema()
+
+    in_spec = state.introspection
+
+    # remove route and reinstall below, for any changes; alternatively, test
+    # for config_diff before proceeding
+    graphql_clear(app)
+
+    if state.origins:
+        origins = state.origins
+        app.add_route(
+            '/graphql',
+            CORSMiddleware(
+                GraphQL(
+                    schema,
+                    context_value=get_user_context,
+                    debug=True,
+                    introspection=in_spec,
+                ),
+                allow_origins=origins,
+                allow_methods=('GET', 'POST', 'OPTIONS'),
+                allow_headers=('Authorization',),
+            ),
+        )
+    else:
+        app.add_route(
+            '/graphql',
+            GraphQL(
+                schema,
+                context_value=get_user_context,
+                debug=True,
+                introspection=in_spec,
+            ),
+        )
+
+
+def graphql_clear(app: 'FastAPI'):
+    for r in app.routes:
+        if r.path == '/graphql':
+            app.routes.remove(r)