188d012bc4
The now removed statement of sending an empty struct into the channel blocked the goroutine until the channel of Done got listened for. This led to a goroutine leak as one does not necessarily has to call the Done function of a context. We fix this issue by removing this value. It was unnecessary anyway as a closed channel always returns the null-value of the returned type.
Poseidon
Poseidon provides containerized execution of arbitrary user code inside a Docker container for learning purposes. It has two main purposes:
- Securing the executions so that they are isolated from each other and from the host system.
- Being scalable enough to provide hundreds of executions per minute.
Poseidon also offers a live I/O connection to the running program via WebSocket.
Poseidon is designed to be used with CodeOcean, a code-execution provider and auto-grader used in MOOC platforms.
Poseidon requires a Nomad cluster for scheduling its executions, which needs to be set up separately.
Documentation
For the OpenAPI 3.0 definition of the API Poseidon provides, see the swagger.yaml.
For the rest of the documentation see the docs folder. It describes...
- some aspects of the development workflow including setup guide. You should read this first when starting out with the project.
- configuration of the system.
- security configurations (how to active access control and TLS with Poseidon).
- how Poseidon integrates Nomad in its architecture.
Contributing
Bug reports and pull requests are welcome on GitHub at https://github.com/openHPI/poseidon. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the code of conduct.
License
Poseidon is available as open source under the terms of the MIT License.
Code of Conduct
Everyone interacting in this project's codebases, issue trackers, chat rooms and mailing lists is expected to follow the code of conduct.