edfh-data
Python library for the E:D Faction Hub application backend data services:
- EDDN listener service, receives messages from the EDDN stream and publishes them to a RabbitMQ exchange.
- EDDN handler service, polls message from a RabbitMQ queue, parses them and stores the relevant info in a relational database.
Requirements
- Python 3.13 available in the sytem path.
- Running RabbitMQ and Postgres instances (the included
docker-compose.yamlfile can set them up for development).
Configuration
The following configuration variables are defined are defined as environment variables, or, for local development, specified in a .env configuration file:
DB_HOST=localhost
DB_PORT=5432 # Default postgres port. Change if different DB than postgres is used.
DB_NAME=edfh
DB_ROOT_PASSWD=<db_root_password>
DB_SA_DIALECT=postgresql+psycopg # SQLAlchemy dialect. Change if different DB than postgres is used.
DB_USER=dbuser
DB_PASSWD=<db_password>
RMQ_USER=rmquser
RMQ_PASSWD=<rabbitmq_password>
RMQ_HOST=localhost
RMQ_HANDLER_PREFETCH=10
EDFH_EDDN_MESSAGE_MAX_AGE_DAYS=365
Usage
Install the package with the eddn extra:
python -m pip install edfh-data[eddn]
Launch the EDDN message handler service with:
eddn-handle
Launch the EDDN listener service with:
eddn-listen
Development
Python environment
Create a virtual environment using Python 3.13:
python3.13 -m venv .venv --prompt edfh-data --upgrade-deps
source .venv/bin/activate
Install the package in development mode along with the development dependencies:
python -m pip install -e .[dev]
Install pre-commit hooks:
pre-commit install
Database service
Migrate the database with:
alembic upgrade head
Generate a new revision:
alembic revision --autogenerate -m "Revision message"
1 maintainer
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