FS-4560:

- All dependencies upgraded
- Because of connexion version 3: Order of routes configs changed in api.yml, response returns content instead of data, content type to be configured using headers in the request

.env.development

@@ -1,4 +1,4 @@
-FLASK_APP=app.py
+FLASK_APP=app:application
 FLASK_ENV=development
 FLASK_RUN_PORT=5000
 FLASK_RUN_HOST=localhost

.flaskenv

@@ -1,4 +1,4 @@
-FLASK_APP=app.py
+FLASK_APP=app:application
 FLASK_ENV=development
 FLASK_RUN_PORT=5000
 FLASK_RUN_HOST=localhost

Dockerfile

@@ -13,4 +13,4 @@ COPY . .
 EXPOSE 8080
 ENV FLASK_ENV=development
 
-CMD ["flask", "run", "--host", "0.0.0.0", "--port", "8080"]
+CMD ["gunicorn", "--worker-class", "uvicorn.workers.UvicornWorker", "wsgi:app", "-b", "0.0.0.0:8080"]

Procfile

@@ -1 +1 @@
-web: flask run --host 0.0.0.0 --port 8080
+web: gunicorn --worker-class uvicorn.workers.UvicornWorker -c run/gunicorn/devtest.py wsgi:app

api/routes/application/routes.py

@@ -39,6 +39,7 @@
 from external_services.exceptions import SubmitError
 from external_services.models.notification import Notification
 from flask import current_app
+from flask import jsonify
 from flask import request
 from flask import send_file
 from flask.views import MethodView
@@ -116,7 +117,9 @@ def get_applications_statuses_report(
             return {"code": 404, "message": str(e)}, 404
 
         if format.lower() == "json":
-            return {"metrics": report_data}
+            response = jsonify({"metrics": report_data})
+            response.headers["Content-Type"] = "application/json"
+            return response
         else:
             return send_file(
                 export_application_statuses_to_csv(report_data),

app.py

@@ -1,9 +1,12 @@
 from os import getenv
 
 import connexion
+from api.routes.application.routes import ApplicationsView  # noqa
 from config import Config
-from connexion.resolver import MethodViewResolver
-from flask import Flask
+from connexion import FlaskApp
+from connexion.resolver import MethodResolver
+from db.exceptions.application import ApplicationError
+from flask import jsonify
 from fsd_utils import init_sentry
 from fsd_utils.healthchecks.checkers import DbChecker
 from fsd_utils.healthchecks.checkers import FlaskRunningChecker
@@ -13,19 +16,23 @@
 from openapi.utils import get_bundled_specs
 
 
-def create_app() -> Flask:
+def create_app() -> FlaskApp:
     init_sentry()
 
-    connexion_options = {
-        "swagger_url": "/",
-    }
-    connexion_app = connexion.FlaskApp(__name__, specification_dir="openapi/", options=connexion_options)
+    connexion_app = connexion.App(
+        __name__,
+    )
+
+    # connexion_app.add_error_handler(ApplicationError, application_error_handler)
+
     connexion_app.add_api(
         get_bundled_specs("/openapi/api.yml"),
         validate_responses=True,
-        resolver=MethodViewResolver("api"),
+        resolver_error=501,
+        resolver=MethodResolver("api"),
     )
 
+    # Configure Flask App
     flask_app = connexion_app.app
     flask_app.config.from_object("config.Config")
 
@@ -42,11 +49,18 @@ def create_app() -> Flask:
     # Bind Flask-Migrate db utilities to Flask app
     migrate.init_app(flask_app, db, directory="db/migrations", render_as_batch=True)
 
+    # Add healthchecks to flask_app
     health = Healthcheck(flask_app)
     health.add_check(FlaskRunningChecker())
     health.add_check(DbChecker(db))
 
-    return flask_app
+    @flask_app.errorhandler(ApplicationError)
+    def handle_application_error(error):
+        response = jsonify({"detail": str(error)})
+        response.status_code = 500
+        return response
+
+    return connexion_app
 
 
 def create_sqs_extended_client(flask_app):
@@ -76,3 +90,4 @@ def create_sqs_extended_client(flask_app):
 
 
 app = create_app()
+application = app.app