PDFKit hangs rails server

[pdfkit]

PDFKit hangs rails server

[jdpace]

I'm not sure how wkhtmltopdf determines when a page is done rendering in order to convert it to a PDF but Datatable may be causing an issue there.

[mitfik]

Hi

I have figure out what is the problem...

The problem is that in middleware pdfkit wait for ending job by wkhtmltopdf but wkhtmltopdf try to connect to server to get some request ... I don't have idea what kind of request it is, because all css/images file are accessible for wkhtmltopdf. But any way server can't answer for this request because he wait for finish job and so on .. so we have loop here.
This is happen only on views with jquery DataTable so probaly there is some extra http link what wkhtmltopdf wants to check ... I tried to check which one but I didn't find anything.

Workaround:
You must run 2 or more instances of servers and tell wkhtmltopdf that can use only one (of course You can not use this server to run wkhtmltopdf)

If someone has idea how to solve this problem I will be really appreciate.

[cimm]

Are there any solutions for this or is the workaround @mitfik proposes still the best solution?

[vanboom]

I am having this same issue and having trouble debugging. Seems the server is stuck waiting for the wkhtmltopdf process to finish...but I cannot figure out why it is not finishing. Nothing but simple HTML views here...

I'm using the 0.10 rc2 of wkhtmltopdf, Ubuntu 10.04, Rails 2.3.8.

It looks like the server spawns off two wkhtmltopdf tasks - but hangs waiting. If I run wkhtmltopdf from the command line - it works fine.

Any help is greatly appreciated. PDFKit works beautifully on my development Ubuntu server, but I'm having trouble getting it up on my Internet box.

thanks

[vanboom]

See here - the problem is with pdfkit and thin...

https://thin.lighthouseapp.com/projects/7212/tickets/140-thin-and-pdfkit

Adding the --threaded option to thin solved the issue!