rules:
  - id: http-request-go-context
    patterns:
    - pattern-either: 
      - pattern: |
          $CTX := ($R : *http.Request).Context()
          ...
          go $F($CTX, ...)
      - pattern: |
          go $F(($R : *http.Request).Context(), ...)
    message: "passing an http-request scoped Context to a goroutine"
    languages: [go]
    severity: ERROR