[tahoe-dev] [tahoe-lafs] #677: WebAPI: GET /uri/$FILECAP?t=json doesn't return size for mutable files, but the HTML version does

[tahoe-lafs]

#677: WebAPI: GET /uri/$FILECAP?t=json doesn't return size for mutable files, but
the HTML version does
-------------------------------+--------------------------------------------
 Reporter:  soult              |           Owner:           
     Type:  defect             |          Status:  new      
 Priority:  trivial            |       Milestone:  undecided
Component:  code-frontend-web  |         Version:  1.3.0    
 Keywords:                     |   Launchpad_bug:           
-------------------------------+--------------------------------------------

Comment(by swillden):

 This one is causing me some trouble, so I did some investigation.

 The immediate culprit is them implementation of
 MutableFileNode.get_size(), in mutable/filenode.py, line 195.  The
 implementation is supremely simple, and not very useful:

 {{{return "?"}}}

 I'm assuming this is because finding out the size of a mutable node isn't
 easy.  The implementation of the HTML "More Info" page, makes a deferred
 call to get_size_of_best_version(), so I presume that's what's needed for
 the JSON as well.

 I've attached a patch that seems to fix the problem, by doing a deferred
 call to get_size_of_best_version(), but I'm not very familiar with this
 code so I don't know it's the best way to handle the issue.  I'll create a
 test case, too.

-- 
Ticket URL: <http://allmydata.org/trac/tahoe/ticket/677#comment:1>
tahoe-lafs <http://allmydata.org>
secure decentralized file storage grid