Hi, On IRC someone suggested (sorry I forgot your name!) to start looking at the gzip plugin as it stores the full data and perform the compression/transformation on the fly. I removed everything and modified so that I now have a null-transform that also works on cached content. I have a good starting point now. The key seems to be to add the transformation on TS_EVENT_HTTP_CACHE_LOOKUP_COMPLETE, too.
Best Regards, Sebastian -----Ursprüngliche Nachricht----- Von: James Peach [mailto:jpe...@apache.org] Gesendet: Dienstag, 6. August 2013 10:33 An: dev@trafficserver.apache.org Cc: bri...@apache.org Betreff: Re: Plugin transforming between cache and end-user On Aug 3, 2013, at 12:16 PM, Sebastian Annies <sebastian.ann...@castlabs.com> wrote: > Hi, > > > > we have huge files that will be slightly different for most users - > they are 1 to 8GB and only 1k differs - so we want to change them with > a transformation. Unfortunately the null-transform plugin is of no > help since it transforms the content coming from the origin server and > NOT the content that is going to the browser of the final user. Is > there anywhere any example on doing transforms at this place? > > > > Basically it’s like this: > > > > http://ats/huge_video_a?userspecific=abc > > http://ats/huge_video_a?userspecific=xyz > > > > and of course we only want to store the untransformed ‘huge_video_a’ > once and perform the transformation (inserting the user specific info) > on every delivery. Where to start? Any hints? I'm not very familiar with transform, but AFAICS you get to do TS_HTTP_REQUEST_TRANSFORM_HOOK or TS_HTTP_RESPONSE_TRANSFORM_HOOK, and the cache always stores the transformed response. Maybe Brian (CC'ed) has some other ideas ... J
