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Project Description

Django-microservices helps you manage the development and interaction of microservices built in Django.

Use Case

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:

  1. giving you a single /.manage.py runcluster command to fire up the development server for each project
  2. providing a service discovery API that will allow your services to find one another

Requirements

Django

Install

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',
    }
}

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)),
]

Usage

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.

Release History

Release History

0.1

This version

History Node

TODO: Figure out how to actually get changelog content.

Changelog content for this version goes here.

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Download Files

Download Files

TODO: Brief introduction on what you do with files - including link to relevant help section.

File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
django-microservices-0.1.tar.gz (3.8 kB) Copy SHA256 Checksum SHA256 Source May 5, 2015

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