Remove FastAPI upper constraint

airflow-core/pyproject.toml

@@ -75,15 +75,15 @@ dependencies = [
     "argcomplete>=1.10",
     "asgiref>=2.3.0",
     "attrs>=22.1.0, !=25.2.0",
-    "cadwyn>=5.2.1",
+    "cadwyn>=5.6.1",
     "colorlog>=6.8.2",
     "cron-descriptor>=1.2.24",
     "croniter>=2.0.2",
     # TODO(potiuk): We should bump cryptography to >=46.0.0 when sqlalchemy>=2.0 is required
     "cryptography>=41.0.0,<46.0.0",
     "deprecated>=1.2.13",
     "dill>=0.2.2",
-    "fastapi[standard-no-fastapi-cloud-cli]>=0.116.0,<0.118.0",
+    "fastapi[standard-no-fastapi-cloud-cli]>=0.121.0",
     "uvicorn>=0.37.0",
     "starlette>=0.45.0",
     "httpx>=0.25.0",

airflow-core/src/airflow/api_fastapi/common/db/common.py

@@ -43,7 +43,7 @@ def _get_session() -> Generator[Session, None, None]:
         yield session
 
 
-SessionDep = Annotated[Session, Depends(_get_session)]
+SessionDep = Annotated[Session, Depends(_get_session, scope="function")]
 
 
 def apply_filters_to_select(

airflow-core/src/airflow/api_fastapi/logging/decorators.py

@@ -167,5 +167,8 @@ async def log_action(
             else:
                 logger.warning("Logical date is missing or empty")
         session.add(log)
+        # Explicit commit to persist the access log independently if the path operation fails or not.
+        # Also it cannot be deferred to a 'function' scoped dependency because of the `request` parameter.
+        session.commit()
 
     return log_action

chart/newsfragments/58524.significant.rst

@@ -0,0 +1,7 @@
+FastAPI dependency is updated and lower bound set to ``0.121.0``
+
+Airflow now requires FastAPI ``>=0.121.0`` and removes the previous upper
+constraint. This aligns with FastAPI's new dependency lifecycle scopes
+(e.g. request/function) that change how dependencies with ``yield`` are
+exited.
+See `FastAPI PR #14262 <https://github.com/fastapi/fastapi/pull/14262>`_.

task-sdk/dev/generate_task_sdk_models.py

@@ -20,6 +20,7 @@
 import os
 import sys
 from pathlib import Path
+from unittest import mock
 
 import httpx
 from datamodel_code_generator import (
@@ -75,6 +76,7 @@ def load_config():
     return cfg
 
 
+@mock.patch("fastapi._compat.v2.get_long_model_name", lambda model: model.__name__)
 def generate_file():
     from airflow.api_fastapi.execution_api.app import InProcessExecutionAPI