cc-zos/lib/models/status/EventsFilter.js

Command-line interface for the ZeppelinOS smart contract platform

'use strict';

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

var _ccZosLib = require('cc-zos-lib');

const log = new _ccZosLib.Logger('EventsFilter');
const TIMEOUT_ERROR = 'Event filter promise timed out';

class EventsFilter {
  constructor(timeout) {
    this.timeout = timeout || (process.env.NODE_ENV === 'test' ? 2000 : 60000);
  }

  async call(contract, eventName = 'allEvents') {
    log.info(`Looking for all the '${eventName}' events for contract ${contract.address}`);
    const promise = new Promise((resolve, reject) => {
      const event = contract[eventName]({}, { fromBlock: 0, toBlock: 'latest' });
      event.get((error, result) => error ? reject(error) : resolve(result));
    });
    return this._promiseTimeout(promise);
  }

  async _promiseTimeout(promise) {
    return new Promise((resolve, reject) => {
      const timer = setTimeout(() => {
        clearTimeout(timer);
        reject(TIMEOUT_ERROR);
      }, this.timeout);

      promise.then(res => {
        clearTimeout(timer);
        resolve(res);
      }).catch(err => {
        clearTimeout(timer);
        reject(err);
      });
    });
  }
}
exports.default = EventsFilter;