Feature #4122
closed
[Keep] Keepstore respects HTTP HEAD method semantics
Description
Currently keepstore violates HTTP specification by returning a non-empty response body.
It should behave exactly the same as GET (including checksum verification) but return an empty response body.
Updated by Tim Pierce over 10 years ago
- Target version changed from Bug Triage to Arvados Future Sprints
Currently, Keepstore responds to both HEAD and GET requests the same way, with a full data block.
If the server responded to HEAD requests properly, with just a report of success or failure, it would permit writing applications to check whether a block exists at the destination. That would be a significant performance improvement to tools like arv-copy, which cannot efficiently resume copying a collection if interrupted.
Updated by Ward Vandewege over 10 years ago
- Subject changed from Keepstore supports proper HEAD requests to [Keep] Keepstore supports proper HEAD requests
Updated by Ward Vandewege over 10 years ago
- Target version changed from Arvados Future Sprints to 2014-10-29 sprint
Updated by Tom Clegg over 10 years ago
- Subject changed from [Keep] Keepstore supports proper HEAD requests to [Keep] Keepstore respects HTTP HEAD method semantics
- Description updated (diff)
- Category set to Keep
- Target version changed from 2014-10-29 sprint to Arvados Future Sprints
Tim Pierce wrote:
Currently, Keepstore responds to both HEAD and GET requests the same way, with a full data block.
If the server responded to HEAD requests properly, with just a report of success or failure, it would permit writing applications to check whether a block exists at the destination. That would be a significant performance improvement to tools like arv-copy, which cannot efficiently resume copying a collection if interrupted.
I don't think HEAD could enable this functionality unless the permission system is disabled. (But obeying the HTTP specification is a good idea anyway.)
Updated by Tom Clegg almost 9 years ago
- Target version deleted (
Arvados Future Sprints) - Status changed from New to Resolved
tomclegg@shell:~$ time curl --head -H "Authorization: OAuth2 $ARVADOS_API_TOKEN" "http://keep6.c97qk.arvadosapi.com:25107/a59f44608b780c968af43da75cc9d6e8+67108864+Ad9785dc3247c083f49c7524690e140659bfef7b3@56fdbbaa" HTTP/1.1 200 OK Content-Length: 67108864 Content-Type: application/octet-stream Date: Fri, 18 Mar 2016 00:11:29 GMT real 0m2.036s user 0m0.000s sys 0m0.014s