meteor external mongo db

external / remote mongo db connector for meteor apps

meteor add crul:meteor-external-mongo-db

quick start

1import { ExternalDbPublisher } from 'meteor/crul:meteor-external-mongo-db';
2
3if (Meteor.isServer) {
4    var externalDbPublisher = new ExternalDbPublisher();
5    externalDbPublisher.connect('mongodb://127.0.0.1:27017/dbName');
6    // externalDbPublisher.disconnect('mongodb://127.0.0.1:27017/dbName'); // not working :(
7}

dependencies

ecmascript
underscore
random

api

this packages exports:

ExternalDbPublisher class (server side) which has 2 methods:
- connect(dbUrl): it publish:
  - a collection named 'dbName-collections' with the collections of the remote DB
  - all the server collections with plain names, find function signature: find(where, options)
- disconnect(dbUrl): disabled, disconnect works but you cannot re-connect again so I've disabled the disconnect feature
ExternalDb class, use: new ExternalDb(dbUrl);
externalDbFactory instance, use: externalDbFactory.create(dbUrl);

! because collections are published with plain names, remote DB should have no collection with same name than collections in local DB

roadmap

add count support (tmeasday:publish-counts?)
add configuration/settings (optional prefix for collections)
disconnect / reconnect

example project instructions

meteor configuration

meteor create meteorTestApp
cd meteorTestApp
meteor add crul:meteor-external-mongo-db

add main.js code to server:

1import { Meteor } from 'meteor/meteor';
2import ExternalDbPublisher from 'meteor/crul:meteor-external-mongo-db';
3
4Meteor.startup(() => {
5    var externalDbPublisher = new ExternalDbPublisher();
6    externalDbPublisher.connect('mongodb://127.0.0.1:27017/dbName');
7});

add main.js code to client:

1import { Meteor } from 'meteor/meteor';
2import './main.html';
3
4Meteor.subscribe('dbName-collections');
5let Collections = new Meteor.Collection('dbName-collections');
6let Collection;
7let collections = {};
8
9Template.body.helpers({
10    collections() {
11        return Collections.find({});
12    },
13    collection() {
14        return Collection.find({}, { limit: 10 });
15    },
16    collectionLoaded() {
17        return Session.get('collectionLoaded');
18    }
19});
20
21Template.body.events({
22    'click .collection'(event, instance) {
23        let collectionName = $(arguments[0].currentTarget).html();
24
25        Meteor.subscribe(collectionName);
26        collections[collectionName] = collections[collectionName] || new Meteor.Collection(collectionName) 
27        Collection = collections[collectionName];
28        Session.set('collectionLoaded', true);
29    }
30});

add main.html code to client:

1<body>        
2    <div style="border: solid 1px #000">
3    {{#each item in collections}}
4        <button class="collection">{{item.name}}</button>
5    {{/each}}
6    </div>
7
8    {{#if collectionLoaded}}
9        <div style="border: solid 1px #666">
10        {{#each item in collection}}
11            <div class="feed">{{item._id}}</div>
12        {{/each}}
13        </div>
14    {{/if}}
15</body>