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I_ia
Frequent Visitor

REST API Authorization

Hi!

I'm trying the REST API, I haven't done this before and the M and DAX languages ​​are weird to me. I tried this on a postman I got this to work well. I tried looking for instructions to do this in Power BI, but that key makes it difficult.
Here is a view of postman javascript, showing that key how to create. Is there any way to make this work in Power BI?

  pm.request.headers.add({key: 'X-Fivaldi-Partner', value: 'ws-XXXX'});

let bodyMD5 = '';
let contentType = '';

if (request.data.length > 0) {
bodyMD5 = CryptoJS.MD5(request.data);
contentType = request.headers['content-type'];
}
let time = Math.floor(new Date().getTime() / 1000).toString();
pm.request.headers.add({key: 'X-Fivaldi-Timestamp', value: time});

let stringToSign = request.method + LF +
bodyMD5 + LF +
contentType + LF;

let headers = pm.request.headers.all();

headers.sort(function (a, b) {
return a.key.toLowerCase().localeCompare(b.key.toLowerCase());
}).forEach(function(header) {
if (header.key.startsWith('X-Fivaldi')) {
let key = header.key.trim().toLowerCase();
let value = header.value;

if (typeof value === 'string') {
value = value.trim();
}

stringToSign += key + ':' + value + LF;
}
});

let url = request.url.replace('http://', '').replace('https://', '');
let path = '';
let queryStr = '';

if (url.includes('?')) {
path = url.substring(url.indexOf('/'), url.indexOf('?'));
queryStr = LF + encodeURI(url.substring(url.indexOf('?') +1));
} else {
path = url.substring(url.indexOf('/'));
}

stringToSign += path + queryStr;
console.log(stringToSign);

stringToSign = CryptoJS.enc.Utf8.parse(stringToSign);
//let key1 = CryptoJS.enc.Utf8.parse(pm.variables.get('partnerSecret'));
let key = CryptoJS.enc.Utf8.parse('xxxxxxxx');

console.log(key);
//console.log(key1);
let hash = CryptoJS.HmacSHA256(stringToSign, key);
let signature = 'Fivaldi ' + CryptoJS.enc.Base64.stringify(hash);
pm.request.headers.add({key: 'Authorization', value: signature});

 

 

 

 

 

 

1 ACCEPTED SOLUTION
lbendlin
Super User
Super User

You are not mentioning which way you want to authenticate. The preferred way seems to be OATH2 via custom connector

 

Handling authentication for Power Query connectors | Microsoft Docs

View solution in original post

3 REPLIES 3
I_ia
Frequent Visitor

Actually, I don’t know what is the best (or only) way to do authentication, in this case.
I like to do desktop (connection and reports) and publish in O365, adding a scheduled update, if is it possible?!

If I make a desktop, does that mean M ​​or DAX language? If so, are there instructions for this type authentication.

I haven't used OAuth2, so I need to learn more about it.

 

Has to be in M, the instructions and sample are in the link I posted.

lbendlin
Super User
Super User

You are not mentioning which way you want to authenticate. The preferred way seems to be OATH2 via custom connector

 

Handling authentication for Power Query connectors | Microsoft Docs

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