request-received/lib/index.js

Route middleware for Koa and Express that adds a request received high-resolution timer and Date to the request object using easily accessible Symbols to prevent request object pollution. Made for Cabin.

"use strict";

const startAtSymbol = Symbol.for('request-received.startAt');
const startTimeSymbol = Symbol.for('request-received.startTime');
const pinoHttpStartAtSymbol = Symbol.for('pino-http.startAt');
const pinoHttpStartTimeSymbol = Symbol.for('pino-http.startTime');

module.exports = function (...args) {
  // start the timers
  let startAt = process.hrtime();
  let startTime = Date.now(); // support both express and koa route middleware

  const isExpress = typeof args[2] !== 'undefined' && typeof args[2] === 'function'; //
  // detect pino-http Symbols
  //
  // express - req[Symbol]
  // koa - ctx[Symbol], ctx.req[Symbol], ctx.request[Symbol]

  if (args[0][pinoHttpStartAtSymbol]) {
    startAt = args[0][pinoHttpStartAtSymbol];
  } else if (!isExpress) {
    if (args[0].req[pinoHttpStartAtSymbol]) startAt = args[0].req[pinoHttpStartAtSymbol];else if (args[0].request[pinoHttpStartAtSymbol]) startAt = args[0].request[pinoHttpStartAtSymbol];
  }

  if (args[0][pinoHttpStartTimeSymbol]) {
    startTime = args[0][pinoHttpStartTimeSymbol];
  } else if (!isExpress) {
    if (args[0].req[pinoHttpStartTimeSymbol]) startTime = args[0].req[pinoHttpStartTimeSymbol];else if (args[0].request[pinoHttpStartTimeSymbol]) startTime = args[0].request[pinoHttpStartTimeSymbol];
  }

  if (isExpress) {
    args[0][startAtSymbol] = startAt;
    args[0][startTimeSymbol] = startTime; // pino-http support

    args[0][pinoHttpStartAtSymbol] = startAt;
    args[0][pinoHttpStartTimeSymbol] = startTime;
  } else {
    args[0][startAtSymbol] = startAt;
    args[0].req[startAtSymbol] = startAt;
    args[0].request[startAtSymbol] = startAt;
    args[0][startTimeSymbol] = startTime;
    args[0].req[startTimeSymbol] = startTime;
    args[0].request[startTimeSymbol] = startTime; // pino-http support

    args[0][pinoHttpStartAtSymbol] = startAt;
    args[0].req[pinoHttpStartAtSymbol] = startAt;
    args[0].request[pinoHttpStartAtSymbol] = startAt;
    args[0][pinoHttpStartTimeSymbol] = startTime;
    args[0].req[pinoHttpStartTimeSymbol] = startTime;
    args[0].request[pinoHttpStartTimeSymbol] = startTime;
  }

  return isExpress ? args[2]() : args[1]();
};
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