grafana/public/app/plugins/datasource/postgres/module.ts

import { PostgresDatasource } from './datasource';
import { PostgresQueryCtrl } from './query_ctrl';

class PostgresConfigCtrl {
  static templateUrl = 'partials/config.html';

  current: any;

  /** @ngInject **/
  constructor($scope) {
    this.current.jsonData.sslmode = this.current.jsonData.sslmode || 'verify-full';
  }

  // the value portion is derived from postgres server_version_num/100
  postgresVersions = [
    { name: '9.3.x', value: 903 },
    { name: '9.4.x', value: 904 },
    { name: '9.5.x', value: 905 },
    { name: '9.6.x', value: 906 },
  ];
}

const defaultQuery = `SELECT
  extract(epoch from time_column) AS time,
  text_column as text,
  tags_column as tags
FROM
  metric_table
WHERE
  $__timeFilter(time_column)
`;

class PostgresAnnotationsQueryCtrl {
  static templateUrl = 'partials/annotations.editor.html';

  annotation: any;

  /** @ngInject **/
  constructor() {
    this.annotation.rawQuery = this.annotation.rawQuery || defaultQuery;
  }
}

export {
  PostgresDatasource,
  PostgresDatasource as Datasource,
  PostgresQueryCtrl as QueryCtrl,
  PostgresConfigCtrl as ConfigCtrl,
  PostgresAnnotationsQueryCtrl as AnnotationsQueryCtrl,
};