It seems that you ran into an issue that we haven't found a good solution for yet: Our photo storage servers maintain a version number for every photo. This version gets updated every time the meta data or the binary data is updated either externally or internally. It is the case that for a metadata update, that version number gets incremented twice: the first time when you make your first edit call, the second time when some asynchronous process that gets triggered has finished and touches the photo again. For GData calls that unfortunately currently has the effect, that the updated entry being returned from your first edit call has the version number incremented by 1. This new version number is then used by your second request to edit the binary data. Unfortunately, in the meantime, the photo version has been increased a second time and so the version you are sending up in you second edit call does not match the current version anymore and you get a 409 error.There are two possible workarounds in your case: A. Update meta data and binary data in a single request after you are done processing the image: 1. query current photo entry 2. apply your meta data edits to the entry (e.g. caption, title aka filename) 3. make your UpdatePhoto call
B. the other option is to build in a retry mechanism based on receiving a 409: 1. when an update fails with a version conflict, just retry it using the most recent photo entry that is being returned with the failure. You'll have to apply your metadata changes again though. On Aug 8, 8:28 am, Josep Valls <[email protected]> wrote: > My code is as follows: > import gdata.photos.service > import gdata.media > import gdata.geo > import atom > > username = 'vallsdotname' > email = 'XXX' > password = 'XXX > source = 'vallsdotname-albumlist-1' > filename = 'C:/Users/Valls/Downloads/Desktops/ > 00660_splash_2560x1600.jpg' > > pws = gdata.photos.service.PhotosService() > pws.ClientLogin(username, password) > albums = pws.GetUserFeed().entry > photos = pws.GetFeed(albums[0].GetPhotosUri()).entry > album = albums[0] > photo = pws.InsertPhotoSimple(album_url, 'New Photo', 'Uploaded using > the API', filename, content_type='image/jpeg') > photo = photos[8] > photo.rotation = gdata.photos.Rotation(text='90') > photo = pws.UpdatePhotoMetadata(photo) > # so far so good > ph = pws.UpdatePhotoBlob(photo, filename) > # errors > fh = open(filename, 'rb') > ph = pws.UpdatePhotoBlob(photo, fh) > # errors > > And this is what I captured. Hopefully will be enough. Any advice on > http monitors? > > Send: Return Code: 0x00000000 > PUThttp://picasaweb.google.com/data/media/api/user/vallsdotname/albumid/... > HTTP/1.1 > Accept-Encoding: identity > Host: picasaweb.google.com > Content-Length: 176489 > Content-Type: image/jpeg > Authorization: GoogleLogin > auth=DQAAAIwAAAAMe34fRcNb3L_9GuxNfNbdk2cfgk886rkmn1PZ9tGBcy1gPTuROvNgbgQi8eqfP_XY5K5WPmSbtw5SmOPm8huMK- > WQ4oAaRboug_bmtjzHz7JgqkyerDQSdpteFrsWK0CXJZpfpdBghMRT0gLkGMEMVaiSx9lsSMT7DADG8H3HyT7ehSJeW4oIdGiRxA- > Fcx4 > User-Agent: None GData-Python/1.3.3 > > Send: Return Code: 0x00000000 > 00000000 FF D8 FF E0 00 10 4A 46 49 46 00 01 01 01 00 > 48 ......JFIF.....H > [...] > > Receive: Return Code: 0x00000000 > <?xml version='1.0' encoding='UTF-8'?><entry xmlns='http://www.w3.org/ > 2005/Atom' xmlns:exif='http://schemas.google.com/photos/exif/2007' > xmlns:gphoto='http://schemas.google.com/photos/2007' > xmlns:media='http://search.yahoo.com/mrss/'><id>http:// > picasaweb.google.com/data/entry/api/user/vallsdotname/albumid/ > 5365689932489135537/photoid/5367284203201802034</ > id><published>2009-08-07T18:03:55.000Z</ > published><updated>2009-08-08T15:17:16.503Z</updated><category > scheme='http://schemas.google.com/g/2005#kind'term='http:// > schemas.google.com/photos/2007#photo'/><title type='text'>New Photo</ > title><summary type='text'>Uploaded using the API</summary><content > type='image/jpeg' src='http://lh4.ggpht.com/_vgXOso7OdEA/Snxsi7RorzI/ > AAAAAAAAB6k/j-KVLIK75LQ/New%20Photo.jpg'/><link rel='http:// > schemas.google.com/g/2005#feed' type='application/atom+xml' > href='http://picasaweb.google.com/data/feed/api/user/vallsdotname/ > albumid/5365689932489135537/photoid/5367284203201802034? > authkey=Gv1sRgCLDEx9OSxMyCzgE'/><link rel='alternate' type='text/html' > href='http://picasaweb.google.com/vallsdotname/2009_07_29? > authkey=Gv1sRgCLDEx9OSxMyCzgE#5367284203201802034'/><link rel='http:// > schemas.google.com/photos/2007#canonical' type='text/html' > href='http://picasaweb.google.com/lh/photo/BdP8LrkztXzpxc4vYnpPmg? > authkey=Gv1sRgCLDEx9OSxMyCzgE'/><link rel='self' type='application/atom > +xml' href='http://picasaweb.google.com/data/entry/api/u > Receive: Return Code: 0x00000000 > ser/vallsdotname/albumid/5365689932489135537/photoid/ > 5367284203201802034?authkey=Gv1sRgCLDEx9OSxMyCzgE'/><link rel='edit' > type='application/atom+xml' href='http://picasaweb.google.com/data/ > entry/api/user/vallsdotname/albumid/5365689932489135537/photoid/ > 5367284203201802034/32?authkey=Gv1sRgCLDEx9OSxMyCzgE'/><link rel='edit- > media' type='image/jpeg' href='http://picasaweb.google.com/data/media/ > api/user/vallsdotname/albumid/5365689932489135537/photoid/ > 5367284203201802034/32?authkey=Gv1sRgCLDEx9OSxMyCzgE'/><link > rel='media-edit' type='image/jpeg' href='http://picasaweb.google.com/ > data/media/api/user/vallsdotname/albumid/5365689932489135537/photoid/ > 5367284203201802034/32?authkey=Gv1sRgCLDEx9OSxMyCzgE'/><link > rel='http://schemas.google.com/photos/2007#report'type='text/html' > href='http://picasaweb.google.com/lh/reportAbuse? > uname=vallsdotname&aid=5365689932489135537&iid=5367284203201802034'/><gphoto:id>5367284203201802034</gphoto:id><gphoto:version>32</ > > gphoto:version><gphoto:albumid>5365689932489135537</ > gphoto:albumid><gphoto:access>private</ > gphoto:access><gphoto:width>1200</gphoto:width><gphoto:height>1600</ > gphoto:height><gphoto:size>117066</gphoto:size><gphoto:client/><gphoto:checksum/><gphoto:timestamp>1249668235000</ > > gphoto:timestamp><gphoto:imageVersion>1961</ > gphoto:imageVersion><gphoto:commentingEnabled>true</ > gphoto:commentingEnabled><gphoto:commentCount>1</ > gphoto:commentCount><exif:tags><exif:imageUniqueID>5e2680042d568e46fdcf7b2ee89f2a7b</ > exif:imageUniqueID></exif:tags><media:group><media:content url='http:// > lh4.ggpht.com/_vgXOso7OdEA/Snxsi7RorzI/AAAAAAAAB6k/j-KVLIK75LQ/New > %20Photo.jpg' height='1600' width='1200' type='image/jpeg' > medium='image'/><media:credit>josep.vallsva</ > media:credit><media:description type='plain'>Uploaded using the API</ > media:description><media:keywords/><media:thumbnail url='http:// > lh4.ggpht.com/_vgXOso7OdEA/Snxsi7RorzI/AAAAAAAAB6k/j-KVLIK75LQ/s72/New > %20Photo.jpg' height='72' width='54'/><media:thumbnail url='http:// > lh4.ggpht.com/_vgXOso7OdEA/Snxsi7RorzI/AAAAAAAAB6k/j-KVLIK75LQ/s144/New > %20Photo.jpg' height='144' width='108'/><media:thumbnail url='http:// > lh4.ggpht.com/_vgXOso7OdEA/Snxsi7RorzI/AAAAAAAAB6k/j-KVLIK75LQ/s288/New > %20Photo.jpg' height='288' width='216'/><media:title type='plain'>New > Photo</media:title></media:group></entry> > > Is there a bug somewhere that should be reported? > I guess I could work around it by generating my own request, in that > case, it'd be very helpful if you could direct me to some good > tutorials to start with this. > > Thanks! > > On Aug 8, 1:31 am, Detlev <[email protected]> wrote: > > > This sounds like a version conflict issue. In GData v1, you had to > > specifiy the current versionid with the edit link. Requesting a photo > > entry would conveniently add it to the edit link element. In Gdata v2, > > we no longer support this type of optimistic concurrency. Instead > > you'll need to take the ETag from the last photo entry response and > > use it in the If-Match header for your next update request. You can > > also use a * for the If-Match header to effectively disable any > > version checking. > > I am not familiar at all with the Python client library, and am not > > sure if it even supports v2 already for the Picasa Web API. > > Can you log the entire HTTP requests and responses (with headers)? > > This should tell you if you're really sending a v2 GData request or > > not, and if the library is setting the headers correctly. > > > On Aug 7, 4:16 pm, Josep Valls <[email protected]> wrote: > > > > Hi, > > > > I'd like to do some processing on the images I have posted on Picasa. > > > I will download them, process them and update the image data. I want > > > to keep all my albums and all the metadata the pictures already had > > > when I first uploaded them. > > > When I try to call UpdatePhotoBlob I get the following exception: > > > Traceback (most recent call last): > > > File "..\7.py", line 31, in <module> > > > ph = pws.UpdatePhotoBlob(photo, filename) > > > File "c:\python25\Lib\site-packages\gdata\photos\service.py", line > > > 581, in Upd > > > atePhotoBlob > > > raise GooglePhotosException(e.args[0]) > > > gdata.photos.service.GooglePhotosException: (409, 'Conflict', "<?xml > > > version='1. > > > 0' encoding='UTF-8'?><entry xmlns='http://www.w3.org/2005/Atom' > > > xmlns:exif='http > > > ://schemas.google.com/photos/exif/2007' xmlns:gphoto='http:// > > > schemas.google.com/ > > > photos/2007' xmlns:media='http://search.yahoo.com/mrss/'><id>http:// > > > picasaweb.go... > > > > This trace is from gdata 2.0.0. Same exception with 2.0.1. > > > > What am I doing wrong? > > > > Thanks! --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google Picasa Web Albums API" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/Google-Picasa-Data-API?hl=en -~----------~----~----~----~------~----~------~--~---
