Django-microservices helps you manage the development and interaction of microservices built in Django. This fork supports Django >=2.1 and Python >=3.7. The original can be found at https://github.com/lander2k2/django-microservices
You are using Django to build an application with a microservices architecture. You have serveral services that communicate to each over HTTP and each service is it's own Django project. You need to run ./manage.py runserver [port]
for each service to bring it up and have the application function when developing.
Django-microservices helps by:
- giving you a single
/.manage.py runcluster
command to fire up the development server for each project - providing a service discovery API that will allow your services to find one another
Django
Create a new virutual environment and django project alongside the django projects that make up your micoservices application:
$ mkvirutalenv myapp_service_manager
$ pip install django django-microservices psycopg2 # for postgres database
$ django-admin startproject service_manager
$ cd service_manager
Create your service manager database:
$ createdb myapp_service_manager # if using postgres
Edit the settings in your new service manager project. Add microservices
to the INSTALLED_APPS
add the database settings:
# service_manager/settings.py
INSTALLED_APPS = (
'django.contrib.admin',
'django.contrib.auth',
...
'microservices',
)
# for postgres database
DATABASES = {
'default': {
'ENGINE': 'django.db.backends.postgresql_psycopg2',
'NAME': 'myapp_service_manager',
'USER': 'db_user',
'PASSWORD': 'secret',
'HOST': 'localhost',
'PORT': '5432',
}
}
TODO: make package install do the migrate as well
Create database tables:
$ ./manage.py migrate
Create an admin user:
$ ./manage.py createsuperuser
Edit the root urls file to look like this:
# service_manager/urls.py
from django.conf.urls import include, url
from django.contrib import admin
from microservices.admin import services_admin_site
urlpatterns = [
url(r'^', include('microservices.urls')),
url(r'^admin/', include(services_admin_site.urls)),
]
TODO: make sure the template files actually get copied.
Copy the template directory from site-packages/django-microservices/microservices to your preferred template location.
In your service manager project, run ./manage.py runcluster
then navigate to http://127.0.0.1:8000
.
The first time you do this, you won't see any services registerd. Click on the "Admin" link, log in and register services by clicking on "Services" in the Microservices admin. Click "Add service" to add each new service in your app.
Now at the index page of the service manager project you will see a list of services with links to each.
For any application that needs to find services in the cluster, add this to the settings.py file:
import requests
SERVICES = requests.get('http://127.0.0.1:8000/services/').json()
Then use settings.SERVICES[service_name]
to get the correct IP for any service in your application.