To connect MongoDB Atlas to Azure Active Directory with privilege access levels using Functions, follow these steps:
-
Create an Azure Function App: Create a new Function App in Azure Portal and add the necessary dependencies in the
package.json
file, such asmongodb
,@azure/msal-node
andjsonwebtoken
. -
Configure Azure AD: Register your application in the Azure Active Directory and get the
client_id
,client_secret
,tenant_id
andaudience
values. -
Configure MongoDB Atlas: In the Atlas dashboard, create a new user with appropriate roles and permissions.
-
Implement the Azure Function: In the Azure Function, add the code to authenticate with Azure AD using the
@azure/msal-node
package, generate a JWT token using thejsonwebtoken
package, and connect to the MongoDB Atlas cluster using themongodb
package. -
Test the Function: Test the Azure Function by invoking it from a REST client or through the Function App console.
Here’s an example of how to implement an Azure Function to connect to MongoDB Atlas with privilege access levels using Functions:
const { MongoClient } = require('mongodb');
const jwt = require('jsonwebtoken');
const msal = require('@azure/msal-node');
const mongoUri = 'mongodb+srv://<username>:<password>@<cluster-url>/test?retryWrites=true&w=majority';
const authorityUrl = `https://login.microsoftonline.com/<tenant-id>/oauth2/v2.0/token`;
const config = {
auth: {
clientId: '<client-id>',
clientSecret: '<client-secret>',
authority: authorityUrl,
},
scopes: ['user.read'],
};
const getToken = async () => {
const cca = new msal.ConfidentialClientApplication(config);
const authResult = await cca.acquireTokenByClientCredential({
scopes: config.scopes,
});
const token = jwt.sign(
{ aud: '<audience>' },
authResult.accessToken,
{ expiresIn: '1h' },
);
return token;
};
const getDb = async () => {
const token = await getToken();
const client = await MongoClient.connect(mongoUri, {
useNewUrlParser: true,
useUnifiedTopology: true,
ssl: true,
sslValidate: true,
sslCA: new Buffer.from(process.env.MONGODB_CA_CERT),
auth: { source: '$external', mechanism: 'MONGODB-X509' },
authMechanismProperties: {
SERVICE_NAME: '<service-name>',
CANONICALIZE_HOST_NAME: '<canonicalize-host-name>',
},
});
return client.db('<database-name>');
};
module.exports = async function (context, req) {
const db = await getDb();
const collection = db.collection('<collection-name>');
const results = await collection.find({}).toArray();
context.res = {
body: results,
};
};
This code uses the @azure/msal-node
package to authenticate with Azure AD, generates a JWT token using the jsonwebtoken
package, and connects to the MongoDB Atlas cluster using the mongodb
package. It then retrieves data from a MongoDB Atlas collection and returns it in the HTTP response. You can modify the code to suit your specific use case.