m360-middleware 0.0.4

M360 middleware library for Python Django and Flask

m360.mw.python

The M360 Python Middleware is a dependency that gets consumed by a Python Web Server built using one of these frameworks Django and Flask.

The middleware is developed using native Python and includes interfaces that facilitate using it with the above mentioned frameworks.

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Installation

pip install m360-middleware

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Usage

Django

In your settings.py file, include the middleware and its configuration:

import os
# ...
MIDDLEWARE = [
   # ...
   # -------------------- M360 Middleware Setup --------------------
   'm360.frameworks.django.middleware.DjangoMiddleware',
   # ...
]
# ...
M360 = {
    "contract": os.path.join(os.path.dirname(__file__), "./contract.json"),
    "ip":  os.environ.get('APP_IP') or "127.0.0.1",
    "type": "django",
    "platform": "manual"
}

In your views, import and use the middleware:

from django.http import JsonResponse

# the sdk is initialized using the middleware when Django starts
from m360 import sdk
M360 = sdk.instance()

def get_settings(request):
    return JsonResponse(M360.registry.get(), status=200, safe=False)

Flask

In your settings.py file, include the middleware and its configuration:

import os
# ...
app = Flask(__name__)

from m360.frameworks.flask.middleware import FlaskMiddleware
app.wsgi_app = FlaskMiddleware(app.wsgi_app, {
    "contract": os.path.join(os.path.dirname(__file__), "./contract.json"),
    "ip": os.environ.get('APP_IP') or "127.0.0.1",
    "type": "flask",
    "platform": "manual"
})

In your views, import and use the middleware:

# the sdk is initialized using the middleware when Flask starts
import json
from m360 import sdk
M360 = sdk.instance()

@app.route('/m360/settings', methods=['GET', 'POST'])
def m360_settings():
    return json.dumps(M360.registry.get())

Containerized Deployment

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Deploying on Docker

When deploying on Docker, please provide the extra options below. Without these options, the handshake between the middleware and the gateway will fail, along with any maintenance operation that gets triggered from the console onto this microservice.

Replace the platform:manual with platform:docker and add the below.

Option	Data Type	Mandatory	Description
platform	String	YES	value equals 'docker'
network	String	YES	value equals the docker network attached to this docker service
service	String	YES	value equals the name of the docker service
containerIP	String	NO	value is the internal IP address of the docker container in the docker service

Example

'platform': 'docker',
'platformOptions': {
    'network': 'mike',
    'service': 'service-express',
    'containerIP': '127.0.0.1'
}

Deploying on Kubernetes

When deploying on Kubernetes, please provide the extra options below. Without these options, the handshake between the middleware and the gateway will fail, along with any maintenance operation that gets triggered from the console onto this microservice.

Replace the platform:manual with platform:kubernetes and add the below.

Option	Data Type	Mandatory	Description
platform	String	YES	value equals 'kubernetes'
namespace	String	YES	value equals the kubernetes namespace where your deployment will run
service	String	YES	value equals the name of the kubernetes service that is attached to the your deployment
exposedPort	String	YES	value equals the exposed port kubernetes service

'platform': 'kubernetes',
'platformOptions": {
    'namespace': 'mike',
    'service': 'service-express',
    'exposedPort': 30402
}

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Notes

The Middleware includes samples on how you can consume it with both Django and Flask.

These sample apps are located inside the examples folder in this repository.

Reference: M360 Middleware Official Documentation