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rep0st

rep0st, the reverse image search for pr0gramm. Available at rep0st.rene8888.at.

Documentation

Architecture

The application unnecessarily contains a home brew framework using Injector. It builds upon SQLAlchemy as an ORM Mapper with PostgreSQL as a backing database, Cheroot as a WSGI server and some custom DI stuff to glue it all together. On top of that OpenCV is used for image processing, pgvector for indexing the features. Metrics are exported in the Prometheus format on the /metricz endpoints.

There is no technical reason for there being a custom framework. The author was just very bored and wanted to build one.

Running the application

Please run all commands from in the project root directory.

Required software

Setup PostgreSQL

Start PostgreSQL with the correct versions locally.

docker-compose -p rep0st -f deployment/docker-compose.base.yml build
docker-compose -p rep0st -f deployment/docker-compose.base.yml up -d

See deployment/README.md for more info on how to run the application only using docker and to see the settings that are used.

Setup the Python development environment

Download dependencies

pipenv install --dev
Run parts of the application

The following steps should be done at least once to get the minimal state into the database to be able to only run parts of it for development.

Post update job

Run the update job once and fill the database with the first 500 posts.
Note: The application won't close after the oneshot job finished. It can be terminated by sending a SIGINT.

pipenv run python -m rep0st.job.update_posts_job \
  --environment=DEVELOPMENT \
  --rep0st_database_uri="postgresql+psycopg2://rep0st:pw@127.0.0.1:5432/rep0st" \
  --pr0gramm_api_user=${PR0GRAMM_API_USER?} \
  --pr0gramm_api_password=${PR0GRAMM_API_PASSWORD?} \
  --rep0st_media_path=./data/ \
  --rep0st_update_posts_end_id=500 \
  --rep0st_update_posts_job_schedule=oneshot
Post features job

Run the update job once and calculate features and fill the index to be able to perform lookups. Note: The application won't close after the oneshot job finished. It can be terminated by sending a SIGINT.

pipenv run python -m rep0st.job.update_features_job \
  --environment=DEVELOPMENT \
  --rep0st_database_uri="postgresql+psycopg2://rep0st:pw@127.0.0.1:5432/rep0st" \
  --rep0st_media_path=./data/ \
  --rep0st_update_features_job_schedule=oneshot
Web

This runs the user facing web application serving the page, API and processing lookups.

pipenv run python -m rep0st.web \
  --environment=DEVELOPMENT \
  --webserver_bind_hostname=127.0.0.1 \
  --webserver_bind_port=5000 \
  --rep0st_database_uri="postgresql+psycopg2://rep0st:pw@127.0.0.1:5432/rep0st"

Pull Requests

Run the autoformatter before sending a Pull Request to ensure all files are nicely formatted:

pipenv run yapf -ir rep0st

Authors

License

The MIT License (MIT)

Copyright (c) 2015-2024 Rene Hollander, Patrick Malik, mopsalarm and contributors

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.