abv/app.py

from flask import Flask, request, redirect, url_for, make_response, render_template, Markup, send_from_directory, send_file
from flask_redis import FlaskRedis
import json, abp

app = Flask(__name__)
redis = FlaskRedis(app)

@app.route("/")
def index():
    return render_template("index.html")

@app.route("/graph", methods=["GET", "POST"])
def graph(page):
    if request.method == 'POST':
        # Convert the data to a graph state
        g = abp.GraphState()
        g.from_json(json.loads(data))

        # Convert it back to JSON
        data = json.dumps(g.to_json(stringify=True))

        # Insert into the database
        redis.execute_command("SET", "graph", data)

        # Return success
        return "OK"

    else:
        # Get from the database
        return redis.get("graph")