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Ampritude-proxy

A reverse proxy in front of Amplitude and Umami. It redacts some data and annotates requests with other data.

Implementation Notes

There are several green threads by Tokio running different bits of the program. They should fail at the same time. Experimentation with `panic!` in one service confirms that they do. The above also holds true when tested with `loop { … }`.

Development

Configured development environment requires:

  1. Nix (flake supported)
  2. Rust configured IDE of choice

How to Run Locally

TODO: Fix/specify how to change ports, currently hardcoded.

  1. Start an echo server: 
    socat -v -d -d tcp-l:1234,crlf,reuseaddr,fork system:"
echo HTTP/1.1 200 OK;
echo Content-Type\: text/plain;
echo;
echo \"Server: \$SOCAT_SOCKADDR:\$SOCAT_SOCKPORT\";
echo \"Client: \$SOCAT_PEERADDR:\$SOCAT_PEERPORT\";
"
socat -v tcp-l:1234,fork exec:"'$(realpath cat)'"
  2. Start the program: 
    cargo watch -qx 'run'  ;; or just `cargo run`
  3. Perform HTTP request towards it:
    • Liveness probe: 
      curl -v localhost:6969/is_alive
    • Proxied HTTP request: 
      curl -v -H'user-agent: nav-developer' 'localhost:6191/nav123456/abcdef123456/test654321/a1b2c3d4e5?regularstring=123456&anotherString=12345'

      This should print the following string in the `socat` terminal:

      • `GET /nav123456/[redacted]/test654321/[redacted]?regularstring=[redacted]&anotherString=12345 HTTP/1.1\r`