django-cloud-provider-zones

https://pypi.org/project/django-cloud-provider-zones/

Django Cloud Provider Regions

Examples

For reference, and for use outside of Django, region_data/normalized_azs.json and region_data/normalized_regions.json contain all generated region and az names.

Why

This Django app provides a static list of region and availability zones for AWS (Amazon Web Services) and GCP (Google Cloud Platform) cloud providers.

The purpose of this app is to provide Cloud Provider Region/AZ lists easily available to Django apps. It provides stable, shortened, versions of names for provisioning naming conventions.

The Regions/AZ list is currrent as of March 2024.

Features

• Quick and easy access to cloud Region and AZs from other Django apps
• Provides shortened versions of Region and AZ names for use by provisioning tools
• DB primary key fields are stable, will not change as new Regions/AZs are added

Installation

pip install django-cloud-provider-zones

Add to project's settings.py INSTALLED_APPS:

'rest_framework',
'django_cloud_provider_zones',

Optionally, include the DRF REST urls in your project's urls.py:

from django.contrib import admin
from django.urls import path, include
import django_cloud_provider_zones

urlpatterns = [
    path('admin/', admin.site.urls),
    path('api/cloudzones/', include('django_cloud_provider_zones.urls')),
]

Import model data

./manage.py loaddata django_cloud_provider_zones-CloudProvider django_cloud_provider_zones-CloudRegion django_cloud_provider_zones-CloudAvailabilityZone

If exposed via the Django admin, it is recommended that these App's models are "read only" so grant only View permissions.

Models

model diagram

This app provides the following models:

• CloudProvider: Cloud provider names - currently AWS or GCP
• CloudRegion: Cloud regions
• CloudAvailabilityZone: Availability zones within a region

Each region and AZ provides, as properties, short name versions with dashes removed. For example, AWS us-east-1 has names

short_name: use1
short_name_with_provider: awsuse1

## CloudProvider ##
>>> CloudProvider.objects.values().first()
{'provider': 'aws'}

## CloudRegion ##
>>> CloudRegion.objects.values().first()
{'cardinality': 'northeast',
 'created': datetime.date(2024, 3, 27),
 'geographic_region': 'ap',
 'id': 11,
 'number': '1',
 'original_region_name': 'ap-northeast-1',
 'provider_id': 'aws'}

>>> CloudRegion.objects.first().short_name
'apne1'
>>> CloudRegion.objects.first().short_name_with_provider
'awsapne1'

## CloudAvailabilityZone ##
>>> CloudAvailabilityZone.objects.values().first()
{'az': 'a', 'created': datetime.date(2024, 3, 27), 'id': 27, 'region_id': 11}

>>> CloudAvailabilityZone.objects.first().short_name
'apne1a'
>>> CloudAvailabilityZone.objects.first().short_name_with_provider
'awsapne1a'

Regions and AZs use Django "natural keys" which allows filtering by the Provider's region name

## Region natural key ##
>>> CloudRegion.objects.first().natural_key()
('aws', 'ap-northeast-1')
>>> CloudRegion.objects.get_by_natural_key("aws", "us-east-1")
<CloudRegion: aws-us-east-1>

## AZ natural key ##
>>> CloudAvailabilityZone.objects.first().natural_key()
('a', ('aws', 'ap-northeast-1'))
>>> CloudAvailabilityZone.objects.get_by_natural_key('a', ('aws', 'ap-northeast-1'))
<CloudAvailabilityZone: aws-ap-northeast-1a>

Exported JSON files

All generated names are exported to these files for reference

tasks/django_management_commands.py django_serialize_azs > region_data/normalized_azs.json
tasks/django_management_commands.py django_serialize_regions  > region_data/normalized_regions.json

API Endpoints

Basic REST Get endpoints available see urls.py

Updating model data

To add a new provider, activate the poetry virtualenv with poetry shell && poetry install

Fetch raw json from the provider's API or cli tool, save it to region_data/PROVIDER_unprocessed.json see AWS and GCP examples. Create tasks/format_json_PROVIDER which creates properly formatted json files

region_data/PROVIDER_provider.json
region_data/PROVIDER_region.json
region_data/PROVIDER_az.json

see AWS and GCP examples.

Add new provider CLOUD_PROVIDERS in tasks/update_db_from_json.py then run

tasks/django_management_commands.py django_makemigrations
tasks/django_management_commands.py django_migrate
tasks/django_management_commands.py django_update_fixture_from_json

Once that looks good add a couple simple tests to src/django_cloud_provider_zones/tests.py then

tasks/django_management_commands.py django_test

Bump version, commit and push as needed.

poetry version patch && poetry publish

Contributing

Contributions are welcome! Please feel free to open issues or submit pull requests.

License

This project is licensed under the MIT License - see the LICENSE file for details.

Acknowledgments

• Thanks to the Django community and Django Software Foundation for Django
• Thanks to the maintainers of all dependencies on this project
• Thanks to Real Python for their Installable Django App article# django-cloud-provider-regions