deep-package-manager/lib.compiled/Provisioning/UndeployDriver/CloudWatchEventsDriver.js

DEEP Package Manager

/**
 * Created by AlexanderC on 11/24/15.
 */

'use strict';

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

var _awsSdk = require('aws-sdk');

var _awsSdk2 = _interopRequireDefault(_awsSdk);

var _AbstractDriver = require('./AbstractDriver');

var _CloudWatchLogsDriver = require('../ListingDriver/CloudWatchLogsDriver');

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

class CloudWatchEventsDriver extends _AbstractDriver.AbstractDriver {
  /**
   * @param {*} args
   */
  constructor(...args) {
    super(...args);

    this._cloudWatchLogsService = null;
  }

  /**
   * @returns {String}
   */
  service() {
    return 'CloudWatchEvents';
  }

  /**
   * @returns {AWS.CloudWatchLogs}
   */
  get cloudWatchLogsService() {
    if (!this._cloudWatchLogsService) {
      this._cloudWatchLogsService = new _awsSdk2.default.CloudWatchLogs({
        region: this.awsService.config.region
      });
    }

    return this._cloudWatchLogsService;
  }

  /**
   * @param {String} resourceId
   * @param {Object} resourceData
   * @param {Function} cb
   * @private
   */
  _removeResource(resourceId, resourceData, cb) {
    this._removeTargets(resourceId, error => {
      if (error) {
        cb(error);
        return;
      }

      this._deleteRule(resourceId, cb);
    });
  }

  /**
   * @param {String} ruleName
   * @param {Function} cb
   * @param {Number} retries
   * @private
   */
  _deleteRule(ruleName, cb, retries = 0) {
    this._awsService.deleteRule({
      Name: ruleName
    }, error => {
      if (error) {
        if (retries >= CloudWatchEventsDriver.MAX_ON_CONFLICT_RETRIES) {
          cb(error);
        } else {
          // @todo: remove hook when fixed

          // Fix:
          //      OperationAbortedException: A conflicting operation is currently
          //      in progress against this resource. Please try again.
          setTimeout(() => {
            this._deleteRule(ruleName, cb, retries++);
          }, 300);
        }

        return;
      }

      // trying to remove associated scheduled lambdas log groups that were created while undeploying the app
      this._removeAssociatedLogGroup(ruleName, error => {
        cb(null);
      });
    });
  }

  /**
   * @param {String} ruleName
   * @param {Function} cb
   * @private
   */
  _removeTargets(ruleName, cb) {
    this._awsService.listTargetsByRule({
      Rule: ruleName
    }, (error, data) => {
      if (error) {
        cb(error);
        return;
      }

      let targets = data.Targets;

      if (targets.length <= 0) {
        cb();
        return;
      }

      let ids = [];

      targets.forEach(targetData => {
        ids.push(targetData.Id);
      });

      let payload = {
        Rule: ruleName,
        Ids: ids
      };

      this._awsService.removeTargets(payload, error => {
        cb(error);
      });
    });
  }

  /**
   * @param {String} ruleName
   * @param {Function} cb
   * @private
   */
  _removeAssociatedLogGroup(ruleName, cb) {
    let params = {
      logGroupName: `${_CloudWatchLogsDriver.CloudWatchLogsDriver.LAMBDA_LOG_GROUP_PREFIX}${ruleName}`
    };

    this.cloudWatchLogsService.deleteLogGroup(params, cb);
  }

  /**
   * @returns {Number}
   */
  static get MAX_ON_CONFLICT_RETRIES() {
    return 10;
  }
}
exports.CloudWatchEventsDriver = CloudWatchEventsDriver;