Whenever bootstrap files hosted in the http_directory are accessed, it should show in the logs

[marcosdiez]

Here is a simple suggestion to save us lots of time in debugging.

In images like virtualbox-iso, one can host files using the http_directory parameter.

These files are are, for example, "install settings" used in debian and ubuntu.

On a good day, everything works as expected.

On other days, it would be great if the internal HTTP server on packer showed some very basic access logs, so we could be sure our ISO image is hitting the HTTP server to download the files and this way narrow down whatever error we are having to "before" or "after" downloading the HTTP file.

[sylviamoss]

Thanks for reaching out. We’ll take a look when we get a chance.

[azr]

Moved this issue here; to do this, I would add an http handler wrapper here:

packer-plugin-sdk/multistep/commonsteps/step_http_server.go

Lines 47 to 53 in 5a7ab7f

	func (s *StepHTTPServer) Handler() http.Handler {
	if s.HTTPDir != "" {
	return http.FileServer(http.Dir(s.HTTPDir))
	}
	return MapServer(s.HTTPContent)
	}

That handler would log the URL of each request. Note that we might not have the immediate time to look at this so if you feel like taking a stab at it: we would love to review.

[azr]

func logreq(f func(w http.ResponseWriter, r *http.Request)) http.Handler {
	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		log.Printf("http_server: hit path=%q", r.URL.Path)

		f(w, r)
	})
}

Is a nice snippet for that.