@events/server/build/query.js

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.query = undefined;

var _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };

var _slicedToArray = function () { function sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"]) _i["return"](); } finally { if (_d) throw _e; } } return _arr; } return function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return sliceIterator(arr, i); } else { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } }; }();

var _redisClient = require('./redis-client');

var _runLua = require('./runLua');

var _runLua2 = _interopRequireDefault(_runLua);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _asyncToGenerator(fn) { return function () { var gen = fn.apply(this, arguments); return new Promise(function (resolve, reject) { function step(key, arg) { try { var info = gen[key](arg); var value = info.value; } catch (error) { reject(error); return; } if (info.done) { resolve(value); } else { return Promise.resolve(value).then(function (value) { step("next", value); }, function (err) { step("throw", err); }); } } return step("next"); }); }; }

var queryLua = '\nlocal from = tonumber(ARGV[1]);\nlocal to = tonumber(ARGV[2]) or redis.call(\'HLEN\', KEYS[1]);\nlocal newArray = {};\n\nfor id=from,to do\n  table.insert(newArray, {id, redis.call(\'hget\', KEYS[1], id)});\nend\n\nreturn newArray\n';

var query = exports.query = function () {
  var _ref = _asyncToGenerator(function* (client, namespc) {
    for (var _len = arguments.length, argv = Array(_len > 2 ? _len - 2 : 0), _key = 2; _key < _len; _key++) {
      argv[_key - 2] = arguments[_key];
    }

    var array = yield (0, _runLua2.default)(client, queryLua, {
      keys: [namespc + '::events'],
      argv: argv.map(String)
    });

    return array.map(function (_ref2) {
      var _ref3 = _slicedToArray(_ref2, 2),
          id = _ref3[0],
          event = _ref3[1];

      return _extends({
        id: id
      }, JSON.parse(event));
    });
  });

  return function query(_x, _x2) {
    return _ref.apply(this, arguments);
  };
}();

exports.default = function (config) {
  var client = (0, _redisClient.createClient)(config.redis);

  return function () {
    var _ref4 = _asyncToGenerator(function* (req) {
      var lastEventId = Number(req.headers['Last-Event-ID'] || req.query.lastEventId);
      var events = yield query(client, config.namespc, lastEventId);

      // we trust the input from commit. otherwise we have to do a try-parse
      return events;
    });

    return function (_x3) {
      return _ref4.apply(this, arguments);
    };
  }();
};