Matt, even if that's the case, it'd be nice if the delay of dozens of get_serving_url() API calls could be parallelised and not added up sequentially (which is what I was trying to find out in my long-winded question to Ikai).
Nick On 29 August 2010 06:19, Matt H <matt2...@gmail.com> wrote: > I don't think so. AFAIK the URL is intended to be persisted - not > regenerated repeatedly. > > On Aug 27, 8:36 am, Nickolas Daskalou <n...@daskalou.com> wrote: > > Ikai, is there any way of doing this asynchronously (like URLFetch > fetch() > > calls)? > > > > Eg: (copied mostly fromhttp:// > code.google.com/appengine/docs/python/urlfetch/asynchronousreq... > > ) > > > > from google.appengine.api import images > > > > # ... > > > > blob_keys = [..., ..., ......] > > blob_key_serving_urls = [] > > size = ... > > crop = ... > > > > def handle_result(rpc): > > url = rpc.get_result() > > blob_key_serving_urls.append(url) > > > > # Use a helper function to define the scope of the callback. > > def create_callback(rpc): > > return lambda: handle_result(rpc) > > > > rpcs = [] > > for blob_key in blob_keys: > > images.create_rpc() > > rpc.callback = create_callback(rpc) > > images.make_get_serving_url_call(rpc, blob_key, size, crop) > > rpcs.append(rpc) > > > > # ... > > > > for rpc in rpcs: > > rpc.wait() > > > > # blob_key_serving_urls should now contain the serving URLs. > > > > Or should we add this as a feature request? > > > > Nick > > > > On 27 August 2010 10:56, Ikai L (Google) <ika...@google.com> wrote: > > > > > > > > > Yes, you can cache the result. In practice, subsequent calls of > > > get_serving_url on the same blob should be faster, but if you have more > new > > > blobs than old ones on a page it can be slow. The resulting URL only > becomes > > > invalid if the blob is deleted. > > > > > On Tue, Aug 24, 2010 at 1:53 PM, Flips <p...@script-network.com> > wrote: > > > > >> Hi, > > > > >> how do I use get_serving_url correctly if I'd like to host a gallery > > >> of 28 pictures? I currently fetch all blob_keys and call 28 times the > > >> get_serving_url method to get my image urls. But this attempt is > > >> really slow (about 12 seconds). Would it be smarter to call > > >> get_serving_url if the blob has been created and store the image url > > >> in datastore? > > > > >> Best Regards > > >> Philip > > > > >> -- > > >> You received this message because you are subscribed to the Google > Groups > > >> "Google App Engine" group. > > >> To post to this group, send email to > google-appeng...@googlegroups.com. > > >> To unsubscribe from this group, send email to > > >> google-appengine+unsubscr...@googlegroups.com<google-appengine%2bunsubscr...@googlegroups.com><google-appengine%2Bunsubscrib > e...@googlegroups.com> > > >> . > > >> For more options, visit this group at > > >>http://groups.google.com/group/google-appengine?hl=en. > > > > > -- > > > Ikai Lan > > > Developer Programs Engineer, Google App Engine > > > Blog:http://googleappengine.blogspot.com > > > Twitter:http://twitter.com/app_engine > > > Reddit:http://www.reddit.com/r/appengine > > > > > -- > > > You received this message because you are subscribed to the Google > Groups > > > "Google App Engine" group. > > > To post to this group, send email to google-appengine@googlegroups.com > . > > > To unsubscribe from this group, send email to > > > google-appengine+unsubscr...@googlegroups.com<google-appengine%2bunsubscr...@googlegroups.com><google-appengine%2Bunsubscrib > e...@googlegroups.com> > > > . > > > For more options, visit this group at > > >http://groups.google.com/group/google-appengine?hl=en. > > -- > You received this message because you are subscribed to the Google Groups > "Google App Engine" group. > To post to this group, send email to google-appeng...@googlegroups.com. > To unsubscribe from this group, send email to > google-appengine+unsubscr...@googlegroups.com<google-appengine%2bunsubscr...@googlegroups.com> > . > For more options, visit this group at > http://groups.google.com/group/google-appengine?hl=en. > > -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to google-appeng...@googlegroups.com. To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
