lumibit/festzelt-service

Get your table at Octoberfest in Munich

OKTOBERFEST FESTZELT SERVICE 🍻

Ever wanted to visit the famous Munich oktoberfest and get your very own table for you/friends/company?
Well, most of those tables never go public and Oktoberfest is looking "sold out" all the time. With this service, you can get instant notifications when the tent staff releases new availabilities.
This happens normally between 11-15 CET on working days.
Delivered directly to telegram.

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Setup • Deployment • Customization • Debugging

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SETUP

1. Create a Telegram Bot
   You need to create a Telegram Bot, so your first step would be to talk to Botfather. A detailed manual can be found here:
   Create a telegram bot
   The token created by Botfather is a string like 123456789:ABCDEFGHIJKLMNOPQRSTUVWXYZ that is required to authorize the bot and send requests to the Bot API.

2. Start a chat with your Bot
   You also need a chat_id, where vacancies should be delivered by the bot. The commands below can help you find the id:

BOT_TOKEN=123456789:ABCDEFGHIJKLMNOPQRSTUVWXYZ

# Start a Chat with Bot for private communication
# Launch the following command after that:
curl -s https://api.telegram.org/bot$BOT_TOKEN/getUpdates \
| python3 -c "import sys, json; print(str(json.load(sys.stdin)['result'][0]['message']['from']['id']))"

# As an alternative, you can also add the bot to a group channel
# Launch the following command after that:
curl -s https://api.telegram.org/bot$BOT_TOKEN/getUpdates \
| python3 -c "import sys, json; print(str(json.load(sys.stdin)['result'][0]['message']['chat']['id']))"

The response is a chat_id, group chats start with a -. You are ready to go!

DEPLOYMENT

terraform apply will deploy this bot to your AWS Cloudroom.

Setup your AWS Provider and the necessary variables before.

provider "aws" {
  region  = "eu-central-1"
  profile = "YOUR_AWS_PROFILE"
}

Docker must be up and running as well while deploying

CUSTOMIZATION

By default, the Bot will look for Mittag and Nachmittag vacancies on all days of the week.
This can be changed using the terraform variables desired_times and desired_days.

desired_days     = "Montag, Dienstag, Mittwoch, Donnerstag, Freitag, Samstag, Sonntag"
desired_times    = "Nachmittag"

Currently the following Tents are supported:
Schützenzelt
Schottenhamel Festhalle
Hacker Zelt

Always use the official reservations sites for booking!

DEBUGGING

SOURCE CODE

Setup the necessary environment variables in an .env file

PYTHON_LOGLEVEL=DEBUG
TELEGRAM_TOKEN=123456789:ABCDEFGHIJKLMNOPQRSTUVWXYZ
TELEGRAM_CHANNEL=-123456789
SESSION_STORAGE=data/vacancies.json
BUCKET_NAME=wiesn-zelt-crawler
DESIRED_TIMES=Mittag, Nachmittag
DESIRED_DAYS=Montag, Dienstag
DEBUG=true

AWS

Build the lambda-layer locally.

docker build -f Dockerfile -t lambdalayer . 

If you are using aws sso login remember to call aws sts get-caller-identity after login for credential population.

Happy 🍺