Update MS binaries using node-red

Forum
1

Hello, I’m not sure this is the right place to ask, but I’m struggling uploading a microservice file throught node-red. I’m doing a POST request to /application/applications/someId, but I get error 500 :
{"error":"general/internalError","message":"Provider not found","info":"https://www.cumulocity.com/guides/reference-guide"}"

It is probably due to my struggle do send a multipart form, but it is not verbose enough to understand what I did wrong…

I’m doing the multipart split that way :

// The file contents (Buffer) from previous node
var fileBuffer = msg.payload;

msg.method = "POST";
msg.headers = {
 "content-type" : 'multipart/form-data'
};
msg.payload = {
 "KEY": {
    "value": fileBuffer,
    "options": {
        "filename": "archive.zip"
    }
 }
}

return msg;

Best regards,

Paul

2

Hi @paul.de-la-porte-des,

it seems you are using the wrong API in case you are trying to update the binary of an application. For that case you POST request should go to /application/applications/{id}/binaries (see: Cumulocity - OpenAPI).

Regards,
Tristan

2 Likes
3

Oh it is a mistake, I’m using /application/applications/{id}/binaries

4

Three things to try:

  • Use application/zip as the content-type
  • Include an Accept: application/json header
  • For the filename use the name of the microservice

Otherwise opening a support ticket can help to get somebody to look at the logs.

5

Have you configured your file reading node to actually output a buffer?

image
image527×368 16.5 KB

Having that set in combination with:

const fileBuffer = msg.payload;
const filename = msg.filename;
msg.method = "POST";
msg.headers = {
 "content-type" : 'multipart/form-data',
 "accept": "application/json"
};

msg.payload = {
    "file": {
        "value": fileBuffer,
        "options": {
            "filename": filename
        }
    },
    "fileName": {
        "value": filename
    }
}
return msg;

Works just fine on my end..

1 Like
6

I found the issue, the code works great, it is my file node that returned an error code for some unrelated reason, and I did not check for errors, so the binary was in fact my error code… Thanks a lot for confirming that the code snippet worked great, It helped me a lot. Have a nice day

1 Like