Accessing Azure Synapse Analytics from Node.js Function - azure

Question

I am trying to access an Azure Synapse SQL Pool out of a Node.js Function. I took this article as a foundation and switch the authentication method to 'azure-active-directory-msi-app-service'.
If I run the function I can see the queryText context.log in the Function cmd but unfortunately nothing else happens. It runs without any kind of output.
I cant see any other context.log or get any response from the function.
const Request = require('tedious').Request;
const TYPES = require('tedious').TYPES;
const test = require('lodash')
module.exports = function (context, req) {
//get the Query Parameter
// Create connection to database
const config = {
authentication: {
type: "azure-active-directory-msi-app-service"
},
server: "database.sql.azuresynapse.net",
options: {
database: "database",
encrypt: true,
port: 1433
}
};
const connection = new Connection(config);
// Create array to store the query results
let result = [];
let rowData = {};
// req.query.color will be passed as a query variable in the URL
//const payload = [req.query.color];
// Create query to execute against the database
const queryText = "SELECT TOP (10) [id],[column1],[column2] FROM [dbo].[Table]";
context.log(queryText);
// Create Request object
request = new Request(queryText, function(err) {
context.log("Request")
if (err) {
// Error in executing query
context.log.error(err);
context.res.status = 500;
context.res.body = "Error executing the query";
} else {
context.res = {
status: 200,
isRaw: true,
body: result,
headers: {
'Content-Type': 'application/json'
}
}
}
context.done();
});
// Manipulate the results and create JSON
request.on('row', function(columns) {
rowData = {};
columns.forEach(function(column) {
// IMPORTANT: Change the conversion logic here to adjust JSON format
rowData[column.metadata.colName] = column.value;
});
result.push(rowData);
});
connection.on('connect', function(err) {
if (err) {
// Error in connecting
context.log.error(err);
context.res.status = 500;
context.res.body = "Error connecting to Azure Synapase";
context.done();
} else {
// Connection succeeded
connection.execSql(request);
}
});
}```

Answer 1

This should work...
const Connection = require('tedious').Connection;
const Request = require('tedious').Request;
const TYPES = require('tedious').TYPES;
const config = {
server: "SQL pool endpoint goes here",
authentication: {
type: "azure-active-directory-msi-app-service"
},
options: {
encrypt: true,
database: "pool name goes here",
port: 1433
}
}
var connection = new Connection(config);
This assumes that you appropriately assigned managed identities as external users in the SQL pool. I also have a PR for this change which you can track here