On Fri, Dec 11, 2009 at 12:13 PM, Matt Amos <[email protected]> wrote:
> On Fri, Dec 11, 2009 at 5:05 PM, Matthias Julius <[email protected]> > wrote: > > Richard Fairhurst <[email protected]> writes: > > > >> Tom Hughes wrote: > >>> Basically, even if sending a streaming response from rails was > >>> possible (which I'm not sure it is - it's certainly hard) > >> > >> You can do it using render :text=>proc, as amf_controller does. But I > >> suspect this would be non-trivial to work into the existing XML API. > > > > The API could also return an URL which the client can poll to get the > > status for an upload. > > > > This would also avoid issues with client timeouts. > > > > Currently, when the client hits a timeout and aborts the connection it > > has no way of knowing whether the upload succeeded or not. For new > > data this creates duplicates when the user tries to upload again. > > i have been thinking about something similar, which would work along > the following lines. the changeset is a container and POSTing a diff > to it returns a 202 Accepted result if diff processing takes more than > a few seconds. the result is a Location redirect to the individual > resource for the diff upload, which could be polled for status. > > unfortunately, that's where it gets complicated. because the diff > upload occurs in a transaction, none of its outputs are visible until > it commits. therefore any status would need to be posted on a > different connection, in a different transaction. this makes things > annoying a messy. if anyone's got any ideas then i'd be very > interested to talk. > > this is something that we can put into API 0.7 - which it might be a > good idea to start thinking about now, since the last API took about a > year to develop ;-) > > Actually, I was just now creating a stub page for API 0.7 brainstorming: http://wiki.openstreetmap.org/wiki/API_v0.7 Remember, it's a brainstorm: all ideas are good ideas at this point... ;-).
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