added celery redis

backend/README.md

@@ -24,6 +24,10 @@ This project was bootstrapped with  [Geodjango Template](https://github.com/itsk
 
 #### Default database settings: 
     Create .env in root backend project , and add the credentials as provided on .env_sample , Export your secret key and database url to your env
+
+    Export your database url 
+
+    export DATABASE_URL=postgis://postgres:postgres@localhost:5432/ai
 #### Now change your username , password and db name in settings.py accordingly to your database
     python manage.py makemigrations
     python manage.py migrate
@@ -42,3 +46,17 @@ fAIr uses oauth2.0 Authentication using [osm-login-python](https://github.com/ks
 2. Check authentiation by getting back your data 
     Hit ```/api/v1/auth/me/```
     - URL requires access-token as header and in return you will see your osm username , id and image url 
+
+
+## Start celery workers 
+1. Install redis server in your pc 
+
+```
+sudo apt install redis
+```
+
+2. Start celery workers 
+
+```
+celery -A aiproject worker --loglevel=info
+```

backend/aiproject/__init__.py

@@ -0,0 +1,5 @@
+# This will make sure the app is always imported when
+# Django starts so that shared_task will use this app.
+from .celery import app as celery_app
+
+__all__ = ("celery_app",)

backend/aiproject/celery.py

@@ -0,0 +1,29 @@
+"""
+https://docs.celeryq.dev/en/stable/django/first-steps-with-django.html
+"""
+import os
+
+from celery import Celery
+from django.conf import settings
+
+# this code copied from manage.py
+# set the default Django settings module for the 'celery' app.
+os.environ.setdefault("DJANGO_SETTINGS_MODULE", "aiproject.settings")
+
+# app name
+app = Celery("aiproject")
+
+# read config from Django settings, the CELERY namespace would make celery
+# config keys has `CELERY` prefix
+app.config_from_object("django.conf:settings", namespace="CELERY")
+
+# discover and load tasks.py from from all registered Django apps
+app.autodiscover_tasks(lambda: settings.INSTALLED_APPS)
+
+
+@app.task
+def train_model(x, y):
+    import time
+
+    time.sleep(5)
+    return x / y

backend/aiproject/settings.py

@@ -34,7 +34,7 @@
     default="https://galaxy-api.hotosm.org/v1/raw-data/current-snapshot/",
 )
 
-ALLOWED_HOSTS = ['localhost',HOSTNAME]
+ALLOWED_HOSTS = ["localhost", HOSTNAME]
 
 if env("GDAL_LIBRARY_PATH", default=False):
     GDAL_LIBRARY_PATH = env("GDAL_LIBRARY_PATH")
@@ -164,3 +164,9 @@
 
 if DEBUG:
     os.environ["OAUTHLIB_INSECURE_TRANSPORT"] = "1"
+
+
+# celery configuration
+
+CELERY_BROKER_URL = env("CELERY_BROKER_URL", default="redis://127.0.0.1:6379/0")
+CELERY_RESULT_BACKEND = env("CELERY_RESULT_BACKEND", default="redis://127.0.0.1:6379/0")

backend/requirements.txt

@@ -10,4 +10,6 @@ Pillow
 django-environ==0.9.0 # used for environment
 django-filter==22.1
 django-cors-headers==3.13.0 # used for enabling cors when frontend is hosted on different server / origin
-osm-login-python==0.0.2
+osm-login-python==0.0.2
+celery==5.2.7
+redis==4.4.0