Re: REST request to Vertex Cloud -- RPG400-L

If you can do it in Postman...you can do it in HTTP API...

Don't quite understand the "not going to be compatible with the RAW JSON"

But looking at the example JS, it doesn't appear that the data in the body
of the HTTP request is encoded as JSON...

Which would be why your RPG program doesn't work...and why they are asking
for 'application/x-www-form-urlencoded'

Take a look at what's in the "Code" window of the working Postman call,
that will tell you what your RPG program needs to send...

You can you the HTTP API debug log to compare exactly what the RPG is
sending vs Postman.

Web forms are supported by HTTP API...look at "url_encoder" functions...I
think you're going to want to have

http_url_encoder_addvar_s('client_id':'1c2fxxxx-xxxx-xxxx-xxxx-xxxx9
a5b2474');

(note these functions used to be named WEBFORM_xxxxx, if you look at the
include file you'll see the alternate names)

Charles

On Thu, Apr 4, 2019 at 12:22 PM Hudson, Ron <RonHudson@xxxxxxxxx> wrote:

Hi Scott,

After getting in touch with the Vertex Cloud technical team, they provided
the following explanation and Javascript solution. Does your tool have a
solution for this?

The Authentication server is not going to be compatible with the RAW JSON
at this moment because this is throwing a security flag from our auth
server. The authentication process that will have to be implemented into
your client in order to get the accessToken should look something like the
following Javascript:

public OAuthResponse getAccessToken() {
HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.APPLICATION_FORM_URLENCODED);
MultiValueMap<String,String> map = new LinkedMultiValueMap<>();
map.add("client_id", "1c2fxxxx-xxxx-xxxx-xxxx-xxxx9a5b2474");
map.add("client_secret", "e645xxxx-xxxx-xxxx-xxxx-xxxxaf9a317c");
map.add("grant_type", "password");
map.add("username", "c7ddxxxx-xxxx-xxxx-xxxx-xxxx6a8a32b1");
map.add("password", "a6adxxxx-xxxx-xxxx-xxxx-xxxx22c0b8d7");
map.add("scope", "calc-rest-api");

HttpEntity<MultiValueMap<String,String>> entity = new
HttpEntity<>(map, headers);
ResponseEntity<OAuthResponse> response;
OAuthResponse oAuthResponse = null;
try {
response = restTemplate.postForEntity(oauthUrl, entity,
OAuthResponse.class);
oAuthResponse = response.getBody();
} catch (HttpClientErrorException e) {
if (e.getStatusCode().value() >= 400) {
return
refreshAccessToken("350630f9-4b6e-47cf-86e3-c1682fcb4ed5");
} else {
String msg = String.format("error while communicating with
auth server: %s", e.getMessage());
throw new GeneralAuthServerException(msg);
}
} catch (Exception e) {
String msg = String.format("error while communicating with
auth server: %s", e.getMessage());
throw new GeneralAuthServerException(msg);
}

if (oAuthResponse == null) {
throw new GeneralAuthServerException("OAuth server returned
invalid response");
} else {
return oAuthResponse;
}
}

Ron Hudson | Programmer / Analyst
+1.704.752.6513 x1324
www.invue.com
-----Original Message-----
From: RPG400-L <rpg400-l-bounces@xxxxxxxxxxxxxxxxxx> On Behalf Of Scott
Klement
Sent: Wednesday, April 3, 2019 11:45 AM
To: RPG programming on IBM i <rpg400-l@xxxxxxxxxxxxxxxxxx>
Subject: Re: REST request to Vertex Cloud

Ron,

I am not familiar with 'Vertex Cloud' and hadn't heard of it prior to your
post.

The data you're sending is a JSON document, so the correct content-type
would be 'application/json'. You say that gives you a 415 response, which
makes me think I'm missing something in how this is supposed to work.

You say you tried 'x-www-form-urlencoded' but that is not a valid media
type at all. You probably meant 'application/x-www-form-urlencoded',
which is the default media type for HTML form data. (However, your JSON
document is not HTML form data, at least not the way you've coded it.)

If you can tell me how you're supposed to send it, I could tell you how to
do it in HTTPAPI. But, I can't figure it out from the info you've supplied.

-SK

On 4/3/19 10:28 AM, Hudson, Ron wrote:

Has anyone had success using a REST request to the Vertex Cloud for

sales tax calculations? If so, any advice? Vertex has been of little
help, all their IBM i connections are SOAP.

I'm attempting to use Scott's HTTPAPI version 1.39, O/S version V7R3M0.

The debug log shows I am making the connection, but I am receiving

either 400 Bad Request or 415 Unsupported Media Type , depending on what
"Content-Type" is sent.

Testing the connection with Postman is successful.

Entire test program below:

http_debug(*on: '/tmp/debug.txt');

JSONsecurity = '+
{"client_id":"Rest-API-xxxxxxxxxxxxxxxxx",+
"client_secret":"xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx",+
"username":"xxxxxxxxxxxxxx",+
"password":"xxxxxxxxxx",+
"scope":"calc-rest-api",+
"grant_type":"password"}';

URL = 'https://auth.vertexsmb.com/identity/connect/token';

monitor;
resp= http_string('POST': url : JSONsecurity :
'x-www-form-urlencoded'); on-error;
httpcode = http_error();
endmon;
*inlr = *on;

Results from different "Content-Type" below
// 'x-www-form-urlencoded' 400 Bad Request

(this was successful in Postman)

// 'application/json' 415 Unsupported Media Type
// 'accept: text/json' 400 Bad Request
// 'text/json' 415 Unsupported Media

Type

// 'text/plain' 415 Unsupported Media Type
// 'accept: text/plain' 400 Bad Request

Thanks
Ron

--
Scott Klement
http://www.scottklement.com

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