added new endpoints, implemented db singleton, started on requests manager api

.gitlab-ci.yml

@@ -12,6 +12,6 @@ backend-pylint:
   - pip install -r requirements.txt --disable-pip-version-check -q
   - pip install pylint --disable-pip-version-check -q
   - python --version
-  - python -m pip list --format=columns
+  - python -m pip list --format=columns --disable-pip-version-check
   script:
   - pylint src/* --fail-under 9

backend/requirements.txt

@@ -1,4 +1,5 @@
 flask~=2.3.3
 flask-smorest~=0.42.1
 marshmallow~=3.20.1
-gevent~=23.9.1
+gevent~=23.9.1
+dictdatabase~=2.4.6

backend/src/config/config.ini

@@ -1,2 +0,0 @@
-[server]
-port=5000

backend/src/config/db_settings.py

@@ -0,0 +1,5 @@
+# pylint: disable=too-few-public-methods
+import os
+
+class DatabaseSettings:
+    DATABASE_DIRECTORY = f"{os.getcwd()}/database/storage"

backend/src/config/server_settings.py

@@ -0,0 +1,5 @@
+# pylint: disable=too-few-public-methods
+
+class ServerSettings:
+    HOSTNAME = "localhost"
+    PORT = 5000

backend/src/database/__init__.py

@@ -0,0 +1 @@
+from .database import Database

backend/src/database/database.py

@@ -0,0 +1,26 @@
+# pylint: disable=too-few-public-methods
+
+import dictdatabase as DDB
+from config.db_settings import DatabaseSettings
+
+class IsSingletonException(Exception):
+    pass
+
+class Database:
+    """
+    This is a singleton that can be accessed using get_instance()
+    """
+    __instance = None
+    db = DDB
+    db.config.storage_directory = DatabaseSettings.DATABASE_DIRECTORY
+
+    @staticmethod
+    def get_instance():
+        if Database.__instance is None:
+            Database()
+        return Database.__instance
+
+    def __init__(self):
+        if Database.__instance is not None:
+            raise IsSingletonException("This class is a singleton")
+        Database.__instance = self

backend/src/database/storage/.gitignore

@@ -0,0 +1,2 @@
+*
+!.gitignore

backend/src/routes/requests/__init__.py

@@ -0,0 +1,6 @@
+# pylint: disable=wrong-import-position,cyclic-import
+from flask_smorest import Blueprint
+
+routes_requests = Blueprint("requests", "requests", url_prefix="/requests", description="")
+
+from . import base, create, interact # avoids circular imports problem

backend/src/routes/requests/base.py

@@ -0,0 +1,18 @@
+from flask.views import MethodView
+import marshmallow as ma
+
+from app import Application
+from . import routes_requests as blp
+
+instance = Application.get_instance()
+
+class RequestsGetAll(ma.Schema):
+    pass
+
+@blp.route("/all")
+class AllRequests(MethodView):
+    @blp.doc(summary="Returns all requests")
+    @blp.response(200, RequestsGetAll, description="Successful operation")
+    def get(self):
+        response = {}
+        return response

backend/src/routes/requests/create.py

@@ -0,0 +1,18 @@
+from flask.views import MethodView
+import marshmallow as ma
+
+from app import Application
+from . import routes_requests as blp
+
+instance = Application.get_instance()
+
+class RequestsCreate(ma.Schema):
+    pass
+
+@blp.route("/create")
+class CreateRequest(MethodView):
+    @blp.doc(summary="Create a new request")
+    @blp.response(200, RequestsCreate, description="Successful operation")
+    def post(self):
+        response = {}
+        return response

backend/src/routes/requests/interact.py

@@ -0,0 +1,24 @@
+from flask.views import MethodView
+import marshmallow as ma
+
+from app import Application
+from . import routes_requests as blp
+
+instance = Application.get_instance()
+
+class RequestsInteraction(ma.Schema):
+    pass
+
+@blp.route("/<uuid>")
+class InteractRequest(MethodView):
+    @blp.doc(summary="Returns a specific request by its UID")
+    @blp.response(200, RequestsInteraction, description="Successful operation")
+    def get(self):
+        response = {}
+        return response
+
+    @blp.doc(summary="Deletes a specific request by its UID")
+    @blp.response(200, RequestsInteraction, description="Successful operation")
+    def delete(self):
+        response = {}
+        return response

backend/src/server.py

@@ -1,26 +1,26 @@
 # pylint: disable=multiple-statements,wrong-import-position,wrong-import-order
 from gevent.monkey import patch_all; patch_all()
 from gevent.pywsgi import WSGIServer
-import configparser
 
 from app import Application
 from routes import routes
+from routes.requests import routes_requests
+from config.server_settings import ServerSettings
 
 instance = Application.get_instance()
 app = instance.app
 api = instance.api
 api.register_blueprint(routes)
+api.register_blueprint(routes_requests)
 
-config = configparser.ConfigParser()
-config.read('config/config.ini')
-
-port = int(config['server']['port']) or 5000
+HOSTNAME = ServerSettings.HOSTNAME
+PORT = ServerSettings.PORT
 
 if __name__ == '__main__':
-    http_Server = WSGIServer(("127.0.0.1", port), app)
+    http_Server = WSGIServer((HOSTNAME, PORT), app)
     try:
-        print(f"Server available on http://127.0.0.1:{port}/")
-        print(f"View docs on http://127.0.0.1:{port}/swagger")
+        print(f"Server available on http://{HOSTNAME}:{PORT}/")
+        print(f"View docs on http://{HOSTNAME}:{PORT}/swagger")
         http_Server.serve_forever()
     except KeyboardInterrupt:
         print("Keyboard interrupt received, stopping...")