Inquiry about the use of the `xcresulttool-file.herokuapp.com` app

[jozefizso]

I have noticed the xcresulttool is sending some attachments to the https://xcresulttool-file.herokuapp.com/file service as bas64 encoded data if the GitHub Token value is set.

What is this service used for and what kind of data is sent there?

xcresulttool/src/attachment.ts

Lines 59 to 74 in e73cbd4

	if (image && core.getInput('token')) {
	await exec.exec(
	'curl',
	[
	'-X',
	'POST',
	'https://xcresulttool-file.herokuapp.com/file',
	'-d',
	image.toString('base64')
	],
	options
	)
	const response = JSON.parse(output)
	if (response) {
	attachment.link = response.link
	}

[kishikawakatsumi]

This is to display images on the report page. Local URLs cannot be used for report pages. Also, GitHub does not have an API for uploading images. In other words, to display an image on the report page, the image must be publicly available on the web. Interestingly, however, the report page automatically hosts the image on GitHub once it is retrieved. As a result, report page images are hosted at githubusercontent.com. In other words, we need a web server to host the images only while the GitHub Actions are running, so this is the server for that role.

[jozefizso]

Thanks for a quick response and the explanation.