@agreed/core/lib/check/extract.js

agreed is a mock server and test client, agreed will be helper for Consumer Driven Contract

"use strict";

const url = require("url");
const qs = require("querystring");
const { pathToRegexp } = require("path-to-regexp");
const format = require("../template/format");

module.exports.incomingRequest = (req) => {
  return new Promise((resolve, reject) => {
    const result = {};

    const urlObj = url.parse(req.url);
    result.method = req.method;
    result.path = urlObj.pathname;
    result.query = qs.parse(urlObj.query);
    result.url = req.url;
    result.headers = req.headers;

    if (req.body) {
      result.body = req.body;
      return resolve(result);
    }

    // has some body contents
    if (req.headers && req.headers["content-length"]) {
      var data = "";
      req.on("readable", () => {
        const chunk = req.read();
        if (chunk) {
          data += chunk;
        }
      });
      req.on("end", () => {
        result.body = JSON.parse(data);
        resolve(result);
      });
      req.on("error", reject);
    } else {
      return resolve(result);
    }
  });
};

module.exports.outgoingRequest = (req, opts) => {
  const result = {};
  result.path =
    req.path.indexOf(":") >= 0
      ? tryCompilePath(req.path, req.values)
      : req.path;
  const query = req.query && qs.stringify(format(req.query, req.values));
  if (query) {
    result.path += `?${query}`;
  }
  result.method = req.method;
  result.headers = (req.headers && format(req.headers, req.values)) || {};
  result.host = opts.host;
  result.port = opts.port;
  return result;
};

function tryCompilePath(path, values) {
  try {
    return pathToRegexp.compile(path)(values);
  } catch (e) {
    return path.replace(/:/g, "");
  }
}