Some ramblings from playing with other servers, particularly varnish and
lighttpd. It would be interesting if we ditched the current configuration
system and just used lua. I know this has been said before, but I've been
doing a bit of playing with mod_lua and I think it it actually doable. We
just need to supply a bit more glue.
Some more suggestions based on this:
-dump the current idea of virtual servers. This can be done
programmatically in lua:
if r.hostname == "www.domain.com" then
r.document_root = "/some/directory/
end
We may could provide a lua library to somewhat simulate the "current"
virtuals:
require 'apache.httpd3.vhost'
v = apache.httpd3.vhost:new()
v.document_root = "/blah"
v.servername = "www.domain.com"
-We really only need three "handlers": request handler (everything from
post_read to handler), filter(s), and log. Once again some lua library
could simulate different phases, if desired.
-No need for rewrite, alias, etc. Can all be done in plain lua. I think
lua makes more sense that trying to do logic in mod_rewrite, anyway.
-"config" file is just a lua script:
require 'apache.httpd3.server'
require 'apache.httpd3.gzip'
require 'apache.httpd3.cache'
s = apache.httpd3.server:new()
s.procs = 4
s.threadpool_size = 256
s.request_timeout = 30
s.default_error_log = "/var/logs/error_log"
function output_filter( r )
apache.httpd3.gzip:do_gzip( r )
apache.httpd3.cache:do_cache_stuff( r )
end
function logger( r )
-- log stuff
end
function handler( r )
-- do handler stuff
set_output_handler(r, output_filter)
set_logger(r, logger)
end
s.default_logger = logger
s:add_handler(handler)
s:main()
This is possible with a very minimal httpd.conf and mod_lua today. You just
use the httpd.conf to "bootstrap" the lua handler and register "empty"
handlers for most everything.
--
Brian Akins
Chief Operations Engineer
Turner Digital Media Technologies
