Mongo Singleton

---

Simplifying MongoDB

Install

$ npm i -S @tadashi/mongo-singleton

API

Environment variables available

• MONGO_CONN
• MONGO_DB
• MONGO_USER
• MONGO_PASS
• MONGO_AUTHSOURCE
• MONGO_POOL_SIZE = 10

Mongo.conn( [args]):MongoClient

Name	Type	Default	Description
args	object	{}	See bellow

args

Name	Type	Default	Description
url	string	MONGO_CONN	See the manual
username	string	MONGO_USER	Database user
password	string	MONGO_PASS	Database password
authSource	string	MONGO_AUTHSOURCE	Authentication Database
options	object	{maxPoolSize: MONGO_POOL_SIZE}	See the manual

Mongo.collection(collectionName [, options ]):Collection

Name	Type	Default	Description
collectionName	string	-	Collection name
options	object	{}	See bellow

options

Name	Type	Default	Description
dbName	string	MONGO_DB	Database name
dbOptions	object	{}	See the manual
collectionOptions	object	See bellow	See the manual

collectionOptions

Name	Type	Default	Description
writeConcern	object	{w: 1}	-

Usage

Example A:

import Mongo from '@tadashi/mongo-singleton'

const client = await Mongo.conn({
  url: 'mongodb://mongodb.example.com:27017',
  username: 'username',
  password: 'password'
})
const db = client.db('my_DB')
await db.dropDatabase()
// more code...

Example B:

// Set the environment variables before start the application
// - MONGO_CONN
// - MONGO_DB
// - MONGO_USER
// - ...
import Mongo from '@tadashi/mongo-singleton'

// will return the collection if exists or create new one
const collection = await Mongo.collection('users')
const users = await collection.find({name: 'Tadashi'}).toArray()
// more code...

License

MIT © Thiago Lagden