Zed A. Shaw wrote:
> On Mon, 12 Mar 2007 13:47:27 +0100
> Jeroen Houben <[EMAIL PROTECTED]> wrote:
>
>> Hi,
>>
>> I'm halfway developing a tiny plugin that allows people to scrub flash
>> video files. I've got my plugin setup to monitor a directory /movies.
>> Whenever a .flv file is requested within that directory, some stuff
>> should happen, if not, the request should be processed as usual. I don't
>> know how to do the latter..
>
> Handlers are put in a chain and you can load them in front or back
> (default is in back). In your case, you want your handler to either do
> the processing and then set the response to finished (see HttpResponse
> docs), or simply ignore the request and let it continue. Then, you'll
> just register the handler on "/" but give the :in_front => true option.
>
> Let me know if you need more than that.
>
Hi Zed, thanks for your reply.
Okay I understand the theory, but how do I continue? I thought simply
returning from my process() method would do the trick, but the code
below doesn't work, it gives a 404 for files that do exists, but are not
flv. I just want any file that is not .flv to be served normally.
def process(request, response)
# only stream flv files
if File.extname(request.params['REQUEST_PATH']).downcase == '.flv'
puts "not a flv, so returning to the next handler on the stack"
return
end
Here's my config:
uri "/movies",
:handler => plugin("/handlers/streamert"),
:in_front => true
I'll post the whole init.rb below, just in case.
require 'mongrel'
require 'gem_plugin'
class Streamert < GemPlugin::Plugin "/handlers"
include Mongrel::HttpHandlerPlugin
def initialize(options = {})
@docroot = options[:cwd] + "/" + options[:docroot]
end
def process(request, response)
# only stream flv files
if File.extname(request.params['REQUEST_PATH']).downcase == '.flv'
puts "not a flv, so returning to the next handler on the stack"
return
end
filename = @docroot + request.params['REQUEST_PATH']
# check if file exists
unless File.exists?(filename) && File.readable?(filename)
response.start(404, true) do |head,out|
out.write "Could not open file #{request.params['REQUEST_PATH']}\n"
end
end
# see if an offset was given
offset =
Mongrel::HttpRequest.query_parse(request.params['QUERY_STRING'])['offset'].to_i
# check for sane offset
offset = 0 unless (0...File.size(filename)).include? offset
begin
response.start(200, true) do |head,out|
head['Content-Type'] = 'video/x-flv'
# write flv marker bytes to response stream
if pos != 0
out.write "FLV"
out.write [1].pack("C")
out.write [1].pack("C")
out.write [9].pack("N")
out.write [9].pack("N")
end
# read and output flv file optionally starting at a given offset
File.open(filename, "rb") do |f|
f.seek(offset)
while (!f.eof) do
out.write f.read(8092)
end
end
end
rescue Exception => e
response.start(500, true) do |head,out|
out.write "error proceessing #{request.params['REQUEST_PATH']}\n"
end
end
end
end
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