moleculer-db-adapter-typeorm-mongo

MongoDB adapter for Moleculer DB service with typeorm. Still a work in progress but stable.

Essentially a clone and modification of the great work on adaptor for Sequelize by the author of the project and dkuida.

it covers only the basics - but when you need more than basics just use the exposed

1service.adapter.repository;

Features

• Standard and multi-tenancy database connecitons
• Create additional named typeorm connections in a service
• List databases from a connection

Install

1$ npm install moleculer-db-adapter-typeorm-mongo --save

Usage

1
2/**
3 * TypeORM db connection
4 */
5adapter: new TypeOrmDbAdapter({
6    database: serviceDB,
7    name: serviceName,
8    // eslint-disable-next-line @typescript-eslint/ban-ts-ignore
9    // @ts-ignore
10    type: 'mongodb',
11    host: 'localhost',
12    port: 27017,
13    entities: [serviceEntity],
14    synchronize: true,
15    useNewUrlParser: true,
16    useUnifiedTopology: true,
17}),
18
19/**
20 * TypeORM db model
21 */
22model: Entity,
23
24/**
25 * Service db connection mode
26 * Either 'mt' for multitenant or 'stanard' for standard connection
27 * string is case insensative.
28 */
29mode: 'standard',
30

Todo

• gridfs integration for file / image storage in MongoDB

Test

$ npm test

Settings

Property	Type	Default	Description
No settings.

Note: idField does not work with Sequelize adapter as you can freely set your own ID while creating the model.

Actions

Methods

find

Entity find

Parameters

Property	Type	Default	Description
filters	Object	required	Filters object to apply

Examples

1todo example

findOne

Entity fineone

Parameters

Property	Type	Default	Description
query	Object	required	Query object

Examples

1todo example

findById

Entity find by id

Parameters

Property	Type	Default	Description
id	String	required	id of document

Examples

1todo example

findByIds

Entity find by array of ids

Parameters

Property	Type	Default	Description
idList	`Array.<(Object	String)>`	required

Examples

1todo example

count

Entity count

Parameters

Property	Type	Default	Description
filters	Object	required	Object of filters to apply

Examples

1todo example

insert

Entity insert

Parameters

Property	Type	Default	Description
entity	Object	required	docuemnt to save

Examples

1todo example

create

Entity create

Parameters

Property	Type	Default	Description
entity	Object	required	document to create

Examples

1todo example

insertMany

Entity insert array of objects

Parameters

Property	Type	Default	Description
entities	Array.<Object>	required	Array of entities

Examples

1todo example

updateMany

Entity update many

Parameters

Property	Type	Default	Description
where	Promise	required	Promise Object filter
update	Promise	required	Promise Object update deep partial

Examples

1todo example

updateById

Entity update by id

Parameters

Property	Type	Default	Description
id	String	required	id of document
update	Object	required	update object using deep partial

Examples

1todo example

removeMany

Entity remove many

Parameters

Property	Type	Default	Description
where	Promise	required	promise object filter

Examples

1todo example

removeById

Entity remove by id

Parameters

Property	Type	Default	Description
id	String	required	id of document

Examples

1todo example

connect

Conect to database

Parameters

Property	Type	Default	Description
mode	String	required	mode of adapter, either mt or standard
options	Object	required	connection options
cb	Object	required	callback with connection in mt mode

Results

Type: Connection, Repository, ConnectionManager

returns Connection, repository and connection manager

Examples

1this.connect(); // connects to default db connection oof service
// new connection object
const newConnection = {
    database: 'products',
    type: String(process.env.DBENGINE),
    username: process.env.MONGOUSERNAME,
    password: process.env.MONGOPASSWORD,
    host: process.env.DBHOST,
    port: Number(process.env.DBPORT),
    authSource: process.env.AUTHSOURCE,
    appname: 'Cameo:service:testapiMT:Products',
    entities: [Products],
    synchronize: process.env.SYNCHRONIZE,
    useNewUrlParser: process.env.USENEWURLPARSER,
    useUnifiedTopology: process.env.USENEWURLPARSER,
};
const productsConnection = await new this.Promise(
  async (resolve, reject) => {
    // pass connection type, connection object and callback to retrieve the new connection object already connected
    await this.connect('mt', newConnection, (conn) => {
      if (!conn) {
        return reject("can't create connection");
      }
         // set new connection object to outside variable for use
         return resolve(conn);
    });
  }
);
// use new connection to query database
await productsConnection.connection.connect();
console.log(await productsConnection.connection.getMongoRepository(Products).find());
// close connection when done
await productsConnection.connection.close();
// use manager (Connection manager) to get all the available connections
console.log(productsConnection.manager);
// get connection you want to use
const connection = productsConnection.manager.get('products')
console.log(connection);
// opens connection
connection.connect();
{...}
// closes connection
connection.close();

disconnect

Disconnect from database

Parameters

Property	Type	Default	Description
No input parameters.

Examples

1this.disconnect(); // disconnects default service connection

createCursor

Create cursor

Parameters

Property	Type	Default	Description
params	Object	required
isCounting	Boolean	false

Examples

1todo example

addDBUser

Add user to database

Parameters

Property	Type	Default	Description
obj	any	required	Connection object
obj.url	String	required	Database url
obj.connectionOpts	Object	required	Database connection options
obj.[key:	any	required	string] - Additional Key pair paramaters
userOpts	any	required	User object
userOpts.username	String	required	User name of user to be added
userOpts.password	String	required	Password of user to be added
userOpts.options	Object	required	Additional options to be passed to add user

Examples

1todo example

command

Run database command

Parameters

Property	Type	Default	Description
url	String	required	Mongodb url
connectionOpts	Object	required	Mongodb connection options
command	Object	required	Command object to send
options	Object	required	Additional options to add

Examples

1todo example

createDB

Create Database

Parameters

Property	Type	Default	Description
obj	any	required	Connection object
obj.url	String	required	Mongo db url
obj.connectionOpts	Object	required	Mongo connection options
obj.databaseName	String	required	Mongo db name
userOpts	any	required	User object (optional)
userOpts.username	String	required	User name
userOpts.Password	String	required	User Password
userOpts.options	Object	required	User options

Examples

1await this.adapter.createDB(
    {
        url: `${process.env.URL}${tenantDB}?authSource=${process.env.AUTHSOURCE}`,
        connectionOpts: {
        useNewUrlParser: Boolean(process.env.USENEWURLPARSER),
        useUnifiedTopology: Boolean(process.env.USENEWURLPARSER),
    },
    databaseName: tenantDB,
    },
    {
        DBUser: ctx.params.db_username,
        DBPassword: ctx.params.db_password,
        options: { roles: ['dbOwner'] },
    },
);

listDataBases

List Databases on server

Parameters

Property	Type	Default	Description
url	any	required	Mongodb url wihtout database
opts	any	required	Mongodb connection options

Examples

1console.log(
   await this.adapter
     .listDataBases(
       `${process.env.URL}?authSource=${process.env.AUTHSOURCE}`,
       {
           useNewUrlParser: Boolean(process.env.USENEWURLPARSER),
           useUnifiedTopology: Boolean(process.env.USENEWURLPARSER),
       },
   )
);

removeUser

Remove user from db

Parameters

Property	Type	Default	Description
obj	any	required	Database connection object
userOpts	any	required	User object if user to be removed

Examples

1todo example

updateDBUser

Update DB User

Parameters

Property	Type	Default	Description
obj	any	required	Connection object
obj.url	String	required	Mongo db url
obj.connectionOpts	Object	required	Mongo connection options
userOpts	any	required	User object
userOpts.username	String	required	User name
userOpts.Password	String	required	User Password
userOpts.options	Object	required	User options (roles)

Examples

1todo example

License

The project is available under the MIT license.

Contact

Copyright (c) 2020 Karnith