heroku-to-clf.js

import { readLines } from "https://deno.land/std@0.161.0/io/buffer.ts";

async function main() {
  for await (const line of readLines(Deno.stdin)) {
    let parts = line.split(" ");

    if (parts.length == 14) {
      let timestamp = new Date(parts[0]).getTime() / 1000;
      let ip = parts[7].replace("fwd=", "").replace(/"/g, "");
      let request = parts[4].replace("path=", "").replace(/"/g, "");
      let host = parts[5].replace("host=", "").replace(/"/g, "");
      let dyno = parts[8].replace("dyno=", "").replace(/"/g, "");
      let status = parts[11].replace("status=", "");
      let size = parts[12].replace("bytes=", "");

      console.log(
        `${timestamp}|${ip}|${request}|${status}|${size}|||||${host}|${dyno}`,
      );
    }
  }
}

console.log("reading lines from stdin");
main();

// heroku logs --tail --ps router -a api2-hackclub | deno run ./heroku-to-clf.js | logstalgia - --sync