Catalyst AppSail

Catalyst AppSail is a fully-managed, independent, Platform-as-a-service (PaaS) component of Catalyst Serverless that enables you to develop and deploy services in the cloud with ease. AppSail applications can be built independently of Catalyst-specific coding structures, and Catalyst provides you with a powerful and highly-scalable platform for this purpose. AppSail supports all frameworks of Python such as Flask, Django, Bottle, or CherryPy.

Implement Python SDK in AppSail

You can implement the Catalyst Python SDK in the codebase of your AppSail service with ease. The SDK will need to be initialized with the request object before each request.

Given below is an example of importing and initializing the Python SDK in a Flask web app.

from flask import Flask, request, g
import os
import zcatalyst_sdk
from zcatalyst_sdk.catalyst_app import CatalystApp
app = Flask(__name__)
@app.before_request
def before_request():
    if request.path.startswith('/admin'):
        return 'Unauthorized', 401
    # if authorized user
    g.zc_app = zcatalyst_sdk.initialize(req=request)
@app.route('/')
def index():
    return 'Web App with Python Flask!'
@app.route('/cache')
def cache():
    app: CatalystApp = g.zc_app
    resp = app.cache().segment().put('key', 'value')
    return resp, 200
listen_port = os.getenv('X_ZOHO_CATALYST_LISTEN_PORT', 9000)
app.run(host='0.0.0.0', port = listen_port)