czhao / bot-the-little-fool

A Bot powered by Facebook messenger and Flask

System Design

This is an attempt to build a bot backend with Flask stack. Currently it supports Facebook messenger only.

• receive the message via webhook
• use supervisor to perform asynchrous processing to comply with guideline from Facebook
• use celery for task dispatch

Features

• bill management

Setup

use virtual environment

virtualenv venv
source venv/bin/activate

Installation

pip install flask
pip install hashlib
pip install requests
pip install raven
pip install blinker
pip install python-memcached
pip install redis
pip install supervisor
pip install -U spacy
pip install wit
pip install python-dateutil
pip install httplib2

Run the bot

cd bot
pip install --editable .
export FLASK_APP=bot
export BOT_APPLICATION_SETTINGS='ABOSOLUTE_PATH/bot_config.cfg'
flask run

sample configuration

DEBUG = True
FB_ACCESS_TOKEN = '' 
FB_VERIFY_TOKEN = '1234567'
FB_APP_SECRET_KEY = ''
SENTRY_DSN = ''

start memcached locally

memcached

start redis locally

redis-server --port 12094

start the celery

celery -A app.celery worker -l info

load the database schema

sqlite3 bot.db < schema.sql