Remote Code Execution

This API execute code in remote containerised machine securely.

• Distributed Architecure
  • High availability
  • Low latency
  • Asynchronous communication

• Resilient to mallicious program
  • Handle infinite loop
  • Handle recursive without exit condition
  • Fork Bomb
  • Manage CPU and memory heavy job

Behind the scene - request Flow

• Client sends a POST request with:
  • Source code
  • Programming language choice
  • Input (if required)
  • Time limit
• Server responds with a unique job ID.
• Server places the request in a task queue.
• Worker node processes the request in a secure environment.
• Worker node updates status in a cache (with expiry) after execution.
• Worker node sends acknowledgment to task queue:
  • Positive acknowledgment: Task is deleted.
  • Negative acknowledgment: Task remains.
• Client uses a GET request with the job ID to:
  • Retrieve results
  • Check status (queued, running)

How to use

After cloning run the following cmd.

docker compose up -d

This would spin up followig services:

1. Server - Basically publisher
2. RabbitMQ - Task Queue
3. Workers - Executers
4. RedisDB - Cache/store the result

Server would be up and listening on port 4000.

TODOS

• Error Handling - [in server]
• Handle File-system-tampering code - [in worker]
• Handle process alterating code - [in worker]
• Multiple queues with variable priority