smartdata/ts/smartdata.classes.db.ts
2018-07-10 00:02:04 +02:00

96 lines
2.6 KiB
TypeScript

import * as plugins from './smartdata.plugins';
import { Objectmap } from 'lik';
import { SmartdataCollection } from './smartdata.classes.collection';
import * as mongoHelpers from './smartdata.mongohelpers';
/**
* interface - indicates the connection status of the db
*/
export type TConnectionStatus = 'initial' | 'disconnected' | 'connected' | 'failed';
export interface ISmartdataOptions {
/**
* the URL to connect to
*/
mongoDbUrl: string;
/**
* the db to use for the project
*/
mongoDbName: string;
/**
* an optional password that will be replace <PASSWORD> in the connection string
*/
mongoDbPass?: string;
}
export class SmartdataDb {
smartdataOptions: ISmartdataOptions;
mongoDbClient: plugins.mongodb.MongoClient;
mongoDb: plugins.mongodb.Db;
status: TConnectionStatus;
smartdataCollectionMap = new Objectmap<SmartdataCollection<any>>();
constructor(smartdataOptions: ISmartdataOptions) {
this.smartdataOptions = smartdataOptions;
this.status = 'initial';
}
// basic connection stuff ----------------------------------------------
/**
* connects to the database that was specified during instance creation
*/
async connect(): Promise<any> {
let finalConnectionUrl = this.smartdataOptions.mongoDbUrl;
if (this.smartdataOptions.mongoDbPass) {
finalConnectionUrl = mongoHelpers.addPassword(
this.smartdataOptions.mongoDbUrl,
this.smartdataOptions.mongoDbPass
);
}
console.log(finalConnectionUrl);
this.mongoDbClient = await plugins.mongodb.MongoClient.connect(
finalConnectionUrl,
{
useNewUrlParser: true
}
);
this.mongoDb = this.mongoDbClient.db(this.smartdataOptions.mongoDbName);
this.status = 'connected';
console.log(`Connected to database ${this.smartdataOptions.mongoDbName}`);
}
/**
* closes the connection to the databse
*/
async close(): Promise<any> {
await this.mongoDbClient.close();
this.status = 'disconnected';
plugins.smartlog
.getDefaultLogger()
.info(`disconnected from database ${this.smartdataOptions.mongoDbName}`);
}
// handle table to class distribution
addTable(SmartdataCollectionArg: SmartdataCollection<any>) {
this.smartdataCollectionMap.add(SmartdataCollectionArg);
}
/**
* Gets a collection's name and returns a SmartdataCollection instance
* @param nameArg
* @returns DbTable
*/
async getSmartdataCollectionByName<T>(nameArg: string): Promise<SmartdataCollection<T>> {
let resultCollection = this.smartdataCollectionMap.find(dbTableArg => {
return dbTableArg.collectionName === nameArg;
});
return resultCollection;
}
}