Rack::Handler::Xxx

Ruby
1

Hi,

I would like to run a Rack application, that can be buggy, and
sometimes throws an exception. I want to catch it, and force
my whole Rack app to continue running. This is the schema:

app = …a Rack app definition goes here…

require ‘rack’
begin
Rack::Handler::FastCGI.run app, :Port => 9811
rescue Exception => e
$stderr.puts “…print info about the exception #{e}…”
retry
end

This way I can catch the exception, but when the retry is reached the
Rack::Handler::FastCGI line again, it fails because of the port 9811
is already in use.

How can I close that port (stop Rack server thread?), and tell Rack
to reopen it?

u.

2

On Sat, Nov 5, 2011 at 3:30 PM, Nokan E. [email protected] wrote:

Rack::Handler::FastCGI.run app, :Port => 9811
to reopen it?
I don’ t know Rack but why not just wrap app in something which
delgates to app, catches exceptions and retries?

Kind regards

robert

3

Hi,
I would like to run a Rack application, that can be buggy, and
sometimes throws an exception.

Hey,

you can define a piece of middleware (something that gets run before
and/or after the request hits the main application easily in Rack, and
I’ve
attached a file that shows how that’s done to handle an error, output
the error message to the console and move on.

Hope it helps,

-Luke