Plug middleware that injects chaos into API requests.

When API chaos is configured via PaperTiger.ChaosCoordinator, this plug may randomly:

• Timeout requests (sleep then return 504)
• Return rate limit errors (429)
• Return server errors (500/502/503)

Configuration

PaperTiger.ChaosCoordinator.configure(%{
  api: %{
    timeout_rate: 0.02,      # 2% of requests timeout
    timeout_ms: 5000,        # How long to sleep before 504
    rate_limit_rate: 0.01,   # 1% get 429
    error_rate: 0.01,        # 1% get 500/502/503
    endpoint_overrides: %{
      "/v1/subscriptions" => :rate_limit  # Always rate limit this endpoint
    }
  }
})