[google-appengine] More bulkloader headache :(

[Patrick Twohig]

I'm getting this when trying to do a nightly backup of my app from a cron
job...

No handlers could be found for logger "google.appengine.tools.appengine_rpc"
Please go to https://www.google.com/accounts/DisplayUnlockCaptcha.

Upon entering my account information with the correct password at CAPTCHA,
it tells me the username/account isn't correct.  Furthermore, I'm able to
log the same account into gmail just fine.  The Google account I'm using is
a Google Apps account.  Any suggestions?

Thanks,


-- 
Patrick H. Twohig.

Namazu Studios
P.O. Box 34161
San Diego, CA 92163-4161

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[google-appengine] Re: My own class getting: java.lang.NoClassDefFoundError: Could not initialize class ????

[Blake]

Answered my own question.  I was accidentally accessing a gwt.client
class on the server.  The class had JSNI in it, so of course the
server couldn't figure it out.

On Mar 17, 1:14 am, Blake  wrote:
> This is weird - the recent version of my app (but not active one)
> can't find one of my own classes that's in my project.  I'm getting
> the standard:
>
> java.lang.NoClassDefFoundError: Could not initialize class 
>
> Has anyone else seen this?  This is server-side, running in a task.
>
> There haven't been any changes to this class, and my project compiles
> and runs otherwise.
>
> Please help???

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[google-appengine] My own class getting: java.lang.NoClassDefFoundError: Could not initialize class ????

[Blake]

This is weird - the recent version of my app (but not active one)
can't find one of my own classes that's in my project.  I'm getting
the standard:

java.lang.NoClassDefFoundError: Could not initialize class 

Has anyone else seen this?  This is server-side, running in a task.

There haven't been any changes to this class, and my project compiles
and runs otherwise.

Please help???

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[google-appengine] Google App Engine Django

[Robert]

I installed the helper r100, typed python manage.py runserver, and
received.

/usr/local/google_appengine/google/appengine/api/
datastore_file_stub.py:40: DeprecationWarning: the md5 module is
deprecated; use hashlib instead
  import md5
/usr/local/google_appengine/google/appengine/api/memcache/__init__.py:
31: DeprecationWarning: the sha module is deprecated; use the hashlib
module instead
  import sha
Traceback (most recent call last):
  File "manage.py", line 21, in 
InstallAppengineHelperForDjango()
  File "/local/src/djangocode/myproject/appengine_django/__init__.py",
line 544, in InstallAppengineHelperForDjango
InstallDjangoModuleReplacements()
  File "/local/src/djangocode/myproject/appengine_django/__init__.py",
line 261, in InstallDjangoModuleReplacements
import django.db
  File "/usr/local/lib/python2.6/dist-packages/django/db/__init__.py",
line 57, in 
'TIME_ZONE': settings.TIME_ZONE,
  File "/local/src/djangocode/myproject/appengine_django/db/base.py",
line 117, in __init__
self._setup_stubs()
  File "/local/src/djangocode/myproject/appengine_django/db/base.py",
line 128, in _setup_stubs
from google.appengine.tools import dev_appserver_main
  File "/usr/local/google_appengine/google/appengine/tools/
dev_appserver_main.py", line 82, in 
from google.appengine.tools import appcfg
  File "/usr/local/google_appengine/google/appengine/tools/appcfg.py",
line 53, in 
from google.appengine.api import dosinfo
  File "/usr/local/google_appengine/google/appengine/api/dosinfo.py",
line 25, in 
import ipaddr
ImportError: No module named ipaddr

If I insert into manage.py:
import sys
sys.path.insert(0,'/usr/local/google_appengine/lib/ipaddr')

Now it appears to work.  Is this sufficient or is there a known gotcha?

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[google-appengine] Google App

[Robert]

python manage.py
/usr/local/google_appengine/google/appengine/api/
datastore_file_stub.py:40: DeprecationWarning: the md5 module is
deprecated; use hashlib instead
  import md5
/usr/local/google_appengine/google/appengine/api/memcache/__init__.py:
31: DeprecationWarning: the sha module is deprecated; use the hashlib
module instead
  import sha
Traceback (most recent call last):
  File "manage.py", line 21, in 
InstallAppengineHelperForDjango()
  File "/local/src/djangocode/myproject/appengine_django/__init__.py",
line 544, in InstallAppengineHelperForDjango
InstallDjangoModuleReplacements()
  File "/local/src/djangocode/myproject/appengine_django/__init__.py",
line 261, in InstallDjangoModuleReplacements
import django.db
  File "/usr/local/lib/python2.6/dist-packages/django/db/__init__.py",
line 57, in 
'TIME_ZONE': settings.TIME_ZONE,
  File "/local/src/djangocode/myproject/appengine_django/db/base.py",
line 117, in __init__
self._setup_stubs()
  File "/local/src/djangocode/myproject/appengine_django/db/base.py",
line 128, in _setup_stubs
from google.appengine.tools import dev_appserver_main
  File "/usr/local/google_appengine/google/appengine/tools/
dev_appserver_main.py", line 82, in 
from google.appengine.tools import appcfg
  File "/usr/local/google_appengine/google/appengine/tools/appcfg.py",
line 53, in 
from google.appengine.api import dosinfo
  File "/usr/local/google_appengine/google/appengine/api/dosinfo.py",
line 25, in 
import ipaddr
ImportError: No module named ipaddr

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[google-appengine] Re: Pre-release 1.3.2 SDKs available

[mb]

Wow, this is a substantial release!

App Engine Python SDK - Release Notes

Version 1.3.2
=
- New API to read the contents of uploaded Blobs (fetch_data)
http://code.google.com/p/googleappengine/issues/detail?id=2536
- URLFetch now supports accessing ports 80-90, 440-450, and 1024-65535
- Mail API now allows common document formats as attachments
http://code.google.com/p/googleappengine/issues/detail?id=494
- The Task Queue API now supports adding multiple tasks in a single
call to
  Queue.add()
- Fixed charset handling for inbound emails
http://code.google.com/p/googleappengine/issues/detail?id=2326
- Fixed issue with compositing background colors in dev_appserver
- New feature in the datastore to specify whether to use strong or
eventually
  consistent reads (the default is strong)
- New datastore feature allows setting deadlines for operations
- Increased the maximum Task Queue refill rate from 20/s to 50/s
- Support for IP blacklisting to prevent denial of service (DoS)
attacks
- Fix an issue with Mac Launcher in Mac OSX 10.5.5
http://code.google.com/p/googleappengine/issues/detail?id=778
- Fix issue with slow updates when there are many skipped files
http://code.google.com/p/googleappengine/issues/detail?id=2492
- Fix issue with cursor not updating when using a GqlQuery
http://code.google.com/p/googleappengine/issues/detail?id=2757



On Mar 16, 8:31 pm, "Jason (Google)"  wrote:
> Hi Everyone. Just a quick note that we just uploaded pre-release 1.3.2
> SDKs for Python and Java to our Google Code project page:
>
> http://code.google.com/p/googleappengine/downloads/list
>
> Both pre-release SDKs include RELEASE_NOTE files that indicate what's
> new, but the App Engine back-ends have not yet been updated, so please
> don't try to use these new features in production just yet. Please
> test your existing applications locally using the new SDK and report
> any bugs as soon as possible. Our next general release will likely
> follow in the next couple of weeks barring any unforeseen issues.
>
> Thanks,
> - Jason

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Re: [google-appengine] Pre-release 1.3.2 SDKs available

[Nickolas Daskalou]

>From the release notes:

"New feature in the datastore to specify whether to use strong or
eventually consistent reads (the default is strong)"

Didn't think this would be out for quite a while. Very, very cool. :)


On 17 March 2010 14:31, Jason (Google)  wrote:

> Hi Everyone. Just a quick note that we just uploaded pre-release 1.3.2
> SDKs for Python and Java to our Google Code project page:
>
> http://code.google.com/p/googleappengine/downloads/list
>
> Both pre-release SDKs include RELEASE_NOTE files that indicate what's
> new, but the App Engine back-ends have not yet been updated, so please
> don't try to use these new features in production just yet. Please
> test your existing applications locally using the new SDK and report
> any bugs as soon as possible. Our next general release will likely
> follow in the next couple of weeks barring any unforeseen issues.
>
> Thanks,
> - Jason
>
> --
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>

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[google-appengine] Pre-release 1.3.2 SDKs available

[Jason (Google)]

Hi Everyone. Just a quick note that we just uploaded pre-release 1.3.2
SDKs for Python and Java to our Google Code project page:

http://code.google.com/p/googleappengine/downloads/list

Both pre-release SDKs include RELEASE_NOTE files that indicate what's
new, but the App Engine back-ends have not yet been updated, so please
don't try to use these new features in production just yet. Please
test your existing applications locally using the new SDK and report
any bugs as soon as possible. Our next general release will likely
follow in the next couple of weeks barring any unforeseen issues.

Thanks,
- Jason

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[google-appengine] Re: GAE getting CAPTCHA-locked by Google Apps?

[Jay Lee]

I too am seeing this across multiple GAE apps deployed by separate
accounts. Clearing the Captcha does not seem to resolve the Captcha
lock but multiple attempts will eventually succeed. Running the same
code on my local machine does not *ever* produce a Captcha lock.
Password complexity is set high and the wrong password has not been
attempted for the accounts.

Jay

On Mar 15, 4:15 pm, Jan Z  wrote:
> gdata ClientLogin calls from GAE (and from GAE only) appear to get
> frequent spurious CAPTCHA locks.
>
> By "spurious" I mean that another ClientLogin attempt a couple of
> seconds later succeeds (with same credentials), so there is no need
> for users to actually go through the unlockcaptcha step.
>
> We can reproduce this on GAE reliably (as in a captcha occurring one
> or more times for every five attempts) using gdata (python) or
> straight protocol access with urlfetch.    Same code runs on local SDK
> without encountering a single captcha.
>
> So it looks like the API is captcha-locking the GAE.
>
> We have an existing support case #00618963 for this, would be great to
> get someone from the GAE team to have a look please?
>
> Jan

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[google-appengine] Few questions about commercial use

[Michal M]

Hi,

I would like to use GAE to set up web service for company I work for.
I am not sure if I understood everything well. Please help me to avoid
mistakes.
1. I have my private Google App Engine account, should I set up a new
one for this purpose? Can I?
2. Is it still free then unless I set up billing and exceed free
quota?
3. Can I attach domain i.e. www.mojafirma.pl to point to this app (I
am already owner of this domain)?
4. I have read that I must also sign in to Google Apps for it. Is it
free for company?

Best regards
Michał Mierzwa

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[google-appengine] Re: Users are not redirected back to app after creating a google account.

[Albert]

Hi Francois!

Thanks!

I hope people at Google can fix this soonest. It seems like a major
hindrance for me to use the AppEngine Users framework for
authentication. I think it's the most convenient for the developer to
use, however, it should also be convenient for the users.

Anyway, I hope they get to fix it soon! I have an app to release this
May, and I want to use the Users framework for performance reasons.

Thank you and enjoy!

On Mar 17, 4:37 am, François Masurel  wrote:
> You can star 
> issuehttp://code.google.com/p/googleappengine/issues/detail?id=1781
>
> On 16 mar, 16:26, Aurelian  wrote:
>
>
>
> > Totally agree.
> > I had to build a full authentication system for that reason, because
> > creating new Google Accounts was very confusing, moreover user was not
> > forwarded to application.
>
> > On Mar 16, 1:55 pm, Albert  wrote:
>
> > > Quoted from the 
> > > linkhttp://code.google.com/appengine/docs/python/users/overview.html#Sign...
>
> > > "Once the user has signed in or created a Google account, the user is
> > > redirected back to your application. The app provides the redirect URL
> > > to the method that generates the sign-in URL."
>
> > > I have tested this in my app, and the user is not redirected back to
> > > the app after creating a google account. After creation of the google
> > > account (after pressing the button marked, "I accept. Create my
> > > account."), the user is directed to a "a verification link has been
> > > sent to your email, please check your email" page.
>
> > > After opening the users email, and clicking the verification link, the
> > > user is also not redirected to the app.
>
> > > I believe that this behavior is not good to apps, since users have to
> > > manually go back to the app after creating a google account. For apps
> > > that target novice internet users that don't have existing google
> > > accounts, the "create account" process has to be very streamlined.
>
> > > By the way, an additional create_account_url() function to the Users
> > > service could also be handy.

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[google-appengine] Re: Datastore Viewer Constantly Failing

[Seth]

Thanks, but I have already deleted all my entities.  All my new
entities are being displayed correctly by the Datastore Viewer.

On Mar 16, 2:47 pm, "Ikai L (Google)"  wrote:
> Try this workaround: the property is stored as a String anyway, so you
> *should* be able to change the type to "String" and see if the
> datastore viewer begins working again. Not sure if this will work or
> not, but some developers have reported this working.
>
>
>
>
>
> On Tue, Mar 16, 2010 at 12:21 PM, Seth  wrote:
> > Aloha Ikai,
>
> >> Do you use any non-"primitive" properties to store data? LinkProperty,
> >> PhoneNumberProperty, etc? If these are set to null values or do not
> >> pass validation, this can cause the admin screen to error 
> >> out:http://code.google.com/p/googleappengine/issues/detail?id=384
>
> > I do use the Link property type.  However, I didn't think any were
> > null and I don't know what validation logic you are referring to.  But
> > I suppose it's possible that somehow these values aren't valid enough
> > for the datastore viewer.
>
> > I hope this bug gets fixed soon!
>
> > Thanks,
> > Seth
>
> > --
> > You received this message because you are subscribed to the Google Groups 
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>
> --
> Ikai Lan
> Developer Programs Engineer, Google App 
> Enginehttp://googleappengine.blogspot.com|http://twitter.com/app_engine

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Re: [google-appengine] Re: Datastore Viewer Constantly Failing

[Ikai L (Google)]

Try this workaround: the property is stored as a String anyway, so you
*should* be able to change the type to "String" and see if the
datastore viewer begins working again. Not sure if this will work or
not, but some developers have reported this working.

On Tue, Mar 16, 2010 at 12:21 PM, Seth  wrote:
> Aloha Ikai,
>
>
>> Do you use any non-"primitive" properties to store data? LinkProperty,
>> PhoneNumberProperty, etc? If these are set to null values or do not
>> pass validation, this can cause the admin screen to error 
>> out:http://code.google.com/p/googleappengine/issues/detail?id=384
>
> I do use the Link property type.  However, I didn't think any were
> null and I don't know what validation logic you are referring to.  But
> I suppose it's possible that somehow these values aren't valid enough
> for the datastore viewer.
>
> I hope this bug gets fixed soon!
>
> Thanks,
> Seth
>
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>



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Developer Programs Engineer, Google App Engine
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[google-appengine] Re: Help! Unintentionally triggered gdata api query limit..

[pythono]

Thanks, it's seems to have resolved itself.


On Mar 15, 5:58 pm, "Ikai L (Google)"  wrote:
> Have you asked the folks on the GData groups? They'll likely be able
> to look into this for 
> you:https://groups.google.com/group/google-help-dataapi?pli=1
>
>
>
>
>
> On Sun, Mar 14, 2010 at 3:54 PM, Anekdotz  wrote:
> > Hey there,
>
> > My application uses the javascript GData (google base) API.  There was
> > a bug that kept refreshing a search query every 5 seconds (the scheme
> > is to query once and then save the results on the client, but
> > mistakenly it was performing a fresh search each time).  This happened
> > for a total of around 5-10 minutes.
>
> > I have fixed the bug, but am now unable to continue testing since
> > Google thinks I'm sending automated queries.  Does anyone know how to
> > fix this situation?
>
> > I browsed through the GData documentation, but there isn't specific
> > information except to stop sending queries and wait.  Has this
> > happened to anyone, and if so how long is the waiting period usually..
>
> > Thanks
>
> > --
> > You received this message because you are subscribed to the Google Groups 
> > "Google App Engine" group.
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> > To unsubscribe from this group, send email to 
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> > athttp://groups.google.com/group/google-appengine?hl=en.
>
> --
> Ikai Lan
> Developer Programs Engineer, Google App 
> Enginehttp://googleappengine.blogspot.com|http://twitter.com/app_engine

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[google-appengine] Re: Publish-subscribe to dynamic recipient lists

[PEZ]

I'd say that relative to reads (and writes) of the news feed, updating
friends lists is uncommon. We've sort of settled for an "eventually
consistent" model now where we update the recipient lists of the
freshest messages immediately and queue the update of older messages
using the Tasks API. Really good to know that this path is tried and
proven before us. Thanks! And thanks for the jaikuengine link.
Strange, I actually knew it was open sourced, but didn't think about
exploring it. Yes, you really helped us in our design considerations!

/PEZ

On Mar 16, 8:00 pm, "Ikai L (Google)"  wrote:
> A couple of thoughts here:
>
> - is removing of friends a common event? similarly, is adding of
> friends a common event? (All relative, relative to "reads" of the news
> feed)
> - From what I remember, the only way to make heavy reads scale is to
> write the data multiple times in peoples' streams. Twitter does this,
> from what I remember, using a "eventually consistent" model. This is
> why your feed will not update for several minutes when they are under
> heavy load. The general consensus, though, is that a relational,
> normalized model simply will not work.
> - the Jaiku engine is open source for your 
> study:http://code.google.com/p/jaikuengine. This runs on App Engine
>
> Hope these help when you're considering a design.
>
>
>
>
>
> On Mon, Mar 15, 2010 at 5:32 AM, PEZ  wrote:
> > We first modeled publish-subscribe "fan out" using conventional RDBMS
> > thinking. It seemed to work at first, but then, since the IN operator
> > works the way it does, we quickly realized we couldn't continue on
> > that path. We found Brett Slatkin's presentation from last years
> > Google I/O and we have now watched it a few times and also played some
> > with thehttp://pubsub-test.appspot.com/example but it isn't clear to
> > us how to  do it with "dynamic" recipient lists.
>
> > We want to implement a "News feed" where a user can see messages
> > broadcasted by her friends, sorted with newest message first. But the
> > feed should reflect changes in her friends list. (If she adds new
> > friends, messages from those should be included in the feed, and if
> > she removes friends their messages should not be included.) If we use
> > the pubsub-test example and attach a recipient list to each message
> > this means a lot of manipulation of the recipient lists when users
> > connect and disconnect friends.
>
> > What we need are some hints on how to "think" when modeling this. Does
> > this description even make sense?
>
> > --
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> > athttp://groups.google.com/group/google-appengine?hl=en.
>
> --
> Ikai Lan
> Developer Programs Engineer, Google App 
> Enginehttp://googleappengine.blogspot.com|http://twitter.com/app_engine

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[google-appengine] Re: Examples of big demanding web apps running on google appengine

[nickmilon]

May be this link helps : 
http://googlecode.blogspot.com/2009/04/google-developer-products-help.html

Also I am sure I have seen more demanding applications than this one
but hard to remember now.
Hm .. one I discoverd my self some days ago  is panoramio.com  see my
comments in  techcrunch

http://techcrunch.com/2010/02/24/google-app-engine-outage/

Happy coding ;)

Nick


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[google-appengine] Re: Image.getHeight throws UnsupportedOperationException when Image instanced from Blobstore

[Josh Rehman]

Do you think I should file a bug?


On Sun, Mar 14, 2010 at 1:24 PM, JavaJosh  wrote:

> Hi there,
>
> I'm new to Google App Engine, and was wondering what I'm doing wrong.
> In my application, users upload (potentially large) images into the
> Blobstore. I also need to create a thumbnail image that is 300px wide
> (and high enough to maintain aspect ratio). Although
> ImagesServiceFactory.makeImageFromBlob(blobKey) returns an Image
> that's not null, when I try to access width and height properties of
> the returned image I get an UnsupportedOperationException "No image
> data is available.".
>
> Here is the simplest code I can think of to reproduce (this is based
> on blobstore example; to make it work setup that example, then add a
> web.xml entry for this servlet and then change the "upload" servlet
> mapping to point to it):
>
> import java.io.IOException;
> import java.util.Map;
> import java.util.logging.Logger;
>
> import javax.servlet.ServletException;
> import javax.servlet.http.HttpServlet;
> import javax.servlet.http.HttpServletRequest;
> import javax.servlet.http.HttpServletResponse;
>
> import com.google.appengine.api.blobstore.BlobKey;
> import com.google.appengine.api.blobstore.BlobstoreService;
> import com.google.appengine.api.blobstore.BlobstoreServiceFactory;
> import com.google.appengine.api.images.Image;
> import com.google.appengine.api.images.ImagesServiceFactory;
>
>
> public class ImageBlobBug extends HttpServlet {
>private static final long serialVersionUID = 1L;
>private BlobstoreService blobstoreService =
> BlobstoreServiceFactory.getBlobstoreService();
>private static final Logger log =
> Logger.getLogger(ImageBlobBug.class.getName());
>
>public void doPost(HttpServletRequest req, HttpServletResponse res)
> throws ServletException, IOException {
>Map blobs =
> blobstoreService.getUploadedBlobs(req);
>BlobKey blobKey = blobs.get("myFile");
>Image image =
> ImagesServiceFactory.makeImageFromBlob(blobKey);
>
>res.sendRedirect("#"+ (image == null ? "Image could not be
> made from
> blob":"Image successfully retrieved with height: " +
> image.getHeight()));
>}
>
> }
>
> Here is the stacktrace:
>
> java.lang.UnsupportedOperationException: No image data is available.
>at
> com.google.appengine.api.images.ImageImpl.updateDimensions(ImageImpl.java:
> 130)
>at
> com.google.appengine.api.images.ImageImpl.getHeight(ImageImpl.java:
> 63)
>at ImageBlobBug.doPost(ImageBlobBug.java:27)
>at javax.servlet.http.HttpServlet.service(HttpServlet.java:713)
>at javax.servlet.http.HttpServlet.service(HttpServlet.java:806)
>at
> org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:
> 487)
>at
> org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:
> 362)
>at
> org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:
> 216)
>at
> org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:
> 181)
>at
> org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:
> 712)
>at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:
> 405)
>at
>
> com.google.apphosting.utils.jetty.DevAppEngineWebAppContext.handle(DevAppEngineWebAppContext.java:
> 70)
>at org.mortbay.jetty.servlet.Dispatcher.forward(Dispatcher.java:268)
>at org.mortbay.jetty.servlet.Dispatcher.forward(Dispatcher.java:126)
>at
>
> com.google.appengine.api.blobstore.dev.UploadBlobServlet.handleUpload(UploadBlobServlet.java:
> 368)
>at com.google.appengine.api.blobstore.dev.UploadBlobServlet.access
> $000(UploadBlobServlet.java:72)
>at com.google.appengine.api.blobstore.dev.UploadBlobServlet
> $1.run(UploadBlobServlet.java:100)
>at java.security.AccessController.doPrivileged(Native Method)
>at
>
> com.google.appengine.api.blobstore.dev.UploadBlobServlet.doPost(UploadBlobServlet.java:
> 98)
>at javax.servlet.http.HttpServlet.service(HttpServlet.java:713)
>at javax.servlet.http.HttpServlet.service(HttpServlet.java:806)
>at
> org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:
> 487)
>at org.mortbay.jetty.servlet.ServletHandler
> $CachedChain.doFilter(ServletHandler.java:1093)
>at
>
> com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter(ServeBlobFilter.java:
> 51)
>at org.mortbay.jetty.servlet.ServletHandler
> $CachedChain.doFilter(ServletHandler.java:1084)
>at
>
> com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:
> 43)
>at org.mortbay.jetty.servlet.ServletHandler
> $CachedChain.doFilter(ServletHandler.java:1084)
>at
>
> com.google.appengine.tools.development.StaticFileFilter.doFilter(StaticFileFilter.java:
> 121)
>at org.mortbay.jetty.servlet.ServletHandler
> $CachedChain.do

[google-appengine] Re: Users are not redirected back to app after creating a google account.

[François Masurel]

You can star issue 
http://code.google.com/p/googleappengine/issues/detail?id=1781

On 16 mar, 16:26, Aurelian  wrote:
> Totally agree.
> I had to build a full authentication system for that reason, because
> creating new Google Accounts was very confusing, moreover user was not
> forwarded to application.
>
> On Mar 16, 1:55 pm, Albert  wrote:
>
>
>
> > Quoted from the 
> > linkhttp://code.google.com/appengine/docs/python/users/overview.html#Sign...
>
> > "Once the user has signed in or created a Google account, the user is
> > redirected back to your application. The app provides the redirect URL
> > to the method that generates the sign-in URL."
>
> > I have tested this in my app, and the user is not redirected back to
> > the app after creating a google account. After creation of the google
> > account (after pressing the button marked, "I accept. Create my
> > account."), the user is directed to a "a verification link has been
> > sent to your email, please check your email" page.
>
> > After opening the users email, and clicking the verification link, the
> > user is also not redirected to the app.
>
> > I believe that this behavior is not good to apps, since users have to
> > manually go back to the app after creating a google account. For apps
> > that target novice internet users that don't have existing google
> > accounts, the "create account" process has to be very streamlined.
>
> > By the way, an additional create_account_url() function to the Users
> > service could also be handy.

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Re: [google-appengine] Re: is there any max() function available in appengine datastore to find max of selected records

[Jeff Schnitzer]

On Tue, Mar 16, 2010 at 12:01 PM, Ulrich  wrote:
> Max wrote:
>>
>> Use a global variable to store max(salary)
>
> If you store this global variable in the datastore and have a high number of
> inserts, you have to update this global variable too often and it will not
> work without some kind of sharding.

Even if there are zillions of salaries and they are constantly
changing, it's still unlikely that max(salary) is going to change
often enough for this to be a problem.

Jeff

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[google-appengine] Re: If-Modified-Since HTTP conditional Get header supported in 1.3.1?

[JC]

One more info that could be relevant. The mime type is application/x-
silverlight-2; the file extension is xap.

On Mar 16, 12:04 pm, JC  wrote:
> I suspect that somehow GAE is not treating the resource as static file
> - specifically with its xap file extension.
>
> I tried setting a custom mime-mapping in web.xml for the xap
> extension, and also tried to declare it as static file using the
> static-files tag in appengine-web.xml. None worked.
> In summary, we have gone over the outside server possibility, the date
> format issue. The file is not located under WEB-INF directory. All of
> them don't seem to be the cuase of the issue.
>
> Please advise.
>
> Thanks,
>
> On Mar 16, 10:37 am, JC  wrote:
>
>
>
> > I see what you mean.
>
> > In my case, the resource (with .xap extension, don't know if that
> > matters) resides in GAE server as part of the deployed web app; there
> > is not URL Fetch to fetch the resource from outside server. The
> > resource is not located in the WEB-INF directory either; it is located
> > under a directory called ClientBin under root. It is a static file
> > that I thought should be treated like other static files; say, a jpg
> > file.
>
> > On Mar 16, 2:15 am, Alkis Evlogimenos ('Αλκης Ευλογημένος)
>
> >  wrote:
> > > Ermm ok lets try for a third time :-). Say you have a GAE app and you
> > > fetch pages from cnn.com. If cnn.com does not supportIf-Modified-Sincethen
> > > you are never getting 304's back, no matter what headers you put in your
> > > request. It has nothing to do with GAE.
>
> > > In the example above "server" is cnn.com.
>
> > > - alkis
>
> > > 2010/3/16 JC 
>
> > > > Are you saying that not all GAE servers running in the Google data
> > > > center supportIf-Modified-Since? Can you elaborate a bit more? The
> > > > Java app was deployed to GAE data center which I assume is running the
> > > > latest 1.3.1 which claims to support conditional Get.
>
> > > > On Mar 15, 6:15 pm, Alkis Evlogimenos ('Αλκης Ευλογημένος)
> > > >  wrote:
> > > > > With server I mean the server you are fetching pages from. That server
> > > > might
> > > > > not have support forIf-Modified-Since.
>
> > > > > - alkis
>
> > > > > 2010/3/16 JC 
>
> > > > > > Thanks for the prompt reply!
>
> > > > > > I don't quite understand what you meant by server not supporting it.
> > > > > > It is running against central GAE server, not my local development
> > > > > > server.
>
> > > > > > As for the date format, This is the dump of the HTTP header through 
> > > > > > a
> > > > > > network sniffer as follow.. It seems to be conforming to HTTP spec. 
> > > > > > Do
> > > > > > you see anything wrong?
>
> > > > > > GET /ClientBin/oob.xap HTTP/1.1
> > > > > >If-Modified-Since: Tue, 16 Mar 2010 00:28:17 GMT
> > > > > > User-Agent: Silverlight
>
> > > > > > Thanks,
>
> > > > > > On Mar 15, 2:22 pm, Alkis Evlogimenos ('Αλκης Ευλογημένος)
> > > > > >  wrote:
> > > > > > >If-Modified-Sinceworks in GAE. Either the server you are hitting
> > > > does
> > > > > > not
> > > > > > > support it, or you are sending it a timestamp it doesn't 
> > > > > > > understand.
>
> > > > > > > - alkis
>
> > > > > > > On Mon, Mar 15, 2010 at 6:28 PM, JC  wrote:
> > > > > > > > GAE 1.3.1 for Java includes a fix (issue 575) to support
> > > > conditional
> > > > > > > > get for static files. I have tried sendingIf-Modified-SinceGet
> > > > > > > > header to retrieve a static file from GAE, It always returns 200
> > > > (with
> > > > > > > > full payload) instead of 304 (unmodified) even though the static
> > > > file
> > > > > > > > hasn't been changed for a while. I have cleared my browser 
> > > > > > > > cache so
> > > > > > > > that the timestamp in theIf-Modified-Sinceis current timestamp.
> > > > It
> > > > > > > > doesn't seem to work. Has anyone usedIf-Modified-Sinceon 1.3.1
> > > > with
> > > > > > > > success?
>
> > > > > > > > --
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[google-appengine] Re: Datastore Viewer Constantly Failing

[Seth]

Aloha Ikai,


> Do you use any non-"primitive" properties to store data? LinkProperty,
> PhoneNumberProperty, etc? If these are set to null values or do not
> pass validation, this can cause the admin screen to error 
> out:http://code.google.com/p/googleappengine/issues/detail?id=384

I do use the Link property type.  However, I didn't think any were
null and I don't know what validation logic you are referring to.  But
I suppose it's possible that somehow these values aren't valid enough
for the datastore viewer.

I hope this bug gets fixed soon!

Thanks,
Seth

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Re: [google-appengine] Datastore Viewer Constantly Failing

[Ikai L (Google)]

Seth,

Do you use any non-"primitive" properties to store data? LinkProperty,
PhoneNumberProperty, etc? If these are set to null values or do not
pass validation, this can cause the admin screen to error out:
http://code.google.com/p/googleappengine/issues/detail?id=384

On Tue, Mar 16, 2010 at 10:45 AM, Seth  wrote:
> Aloha,
>
> I have been unable to use the Datastore Viewer in the admin pages for
> some time now (at least five days).  Every time I try to access it, I
> get:
>
> Server Error
> A server error has occurred.
> Return to Applications screen »
>
> Other pages in my admin screens seem to be functioning just fine.
>
> My add id is adorableurl
>
> Hope this helps!
>
> Thanks,
> Seth
>
> --
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>



-- 
Ikai Lan
Developer Programs Engineer, Google App Engine
http://googleappengine.blogspot.com | http://twitter.com/app_engine

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[google-appengine] Re: If-Modified-Since HTTP conditional Get header supported in 1.3.1?

[JC]

I suspect that somehow GAE is not treating the resource as static file
- specifically with its xap file extension.

I tried setting a custom mime-mapping in web.xml for the xap
extension, and also tried to declare it as static file using the
static-files tag in appengine-web.xml. None worked.
In summary, we have gone over the outside server possibility, the date
format issue. The file is not located under WEB-INF directory. All of
them don't seem to be the cuase of the issue.

Please advise.

Thanks,


On Mar 16, 10:37 am, JC  wrote:
> I see what you mean.
>
> In my case, the resource (with .xap extension, don't know if that
> matters) resides in GAE server as part of the deployed web app; there
> is not URL Fetch to fetch the resource from outside server. The
> resource is not located in the WEB-INF directory either; it is located
> under a directory called ClientBin under root. It is a static file
> that I thought should be treated like other static files; say, a jpg
> file.
>
> On Mar 16, 2:15 am, Alkis Evlogimenos ('Αλκης Ευλογημένος)
>
>
>
>  wrote:
> > Ermm ok lets try for a third time :-). Say you have a GAE app and you
> > fetch pages from cnn.com. If cnn.com does not supportIf-Modified-Sincethen
> > you are never getting 304's back, no matter what headers you put in your
> > request. It has nothing to do with GAE.
>
> > In the example above "server" is cnn.com.
>
> > - alkis
>
> > 2010/3/16 JC 
>
> > > Are you saying that not all GAE servers running in the Google data
> > > center supportIf-Modified-Since? Can you elaborate a bit more? The
> > > Java app was deployed to GAE data center which I assume is running the
> > > latest 1.3.1 which claims to support conditional Get.
>
> > > On Mar 15, 6:15 pm, Alkis Evlogimenos ('Αλκης Ευλογημένος)
> > >  wrote:
> > > > With server I mean the server you are fetching pages from. That server
> > > might
> > > > not have support forIf-Modified-Since.
>
> > > > - alkis
>
> > > > 2010/3/16 JC 
>
> > > > > Thanks for the prompt reply!
>
> > > > > I don't quite understand what you meant by server not supporting it.
> > > > > It is running against central GAE server, not my local development
> > > > > server.
>
> > > > > As for the date format, This is the dump of the HTTP header through a
> > > > > network sniffer as follow.. It seems to be conforming to HTTP spec. Do
> > > > > you see anything wrong?
>
> > > > > GET /ClientBin/oob.xap HTTP/1.1
> > > > >If-Modified-Since: Tue, 16 Mar 2010 00:28:17 GMT
> > > > > User-Agent: Silverlight
>
> > > > > Thanks,
>
> > > > > On Mar 15, 2:22 pm, Alkis Evlogimenos ('Αλκης Ευλογημένος)
> > > > >  wrote:
> > > > > >If-Modified-Sinceworks in GAE. Either the server you are hitting
> > > does
> > > > > not
> > > > > > support it, or you are sending it a timestamp it doesn't understand.
>
> > > > > > - alkis
>
> > > > > > On Mon, Mar 15, 2010 at 6:28 PM, JC  wrote:
> > > > > > > GAE 1.3.1 for Java includes a fix (issue 575) to support
> > > conditional
> > > > > > > get for static files. I have tried sendingIf-Modified-SinceGet
> > > > > > > header to retrieve a static file from GAE, It always returns 200
> > > (with
> > > > > > > full payload) instead of 304 (unmodified) even though the static
> > > file
> > > > > > > hasn't been changed for a while. I have cleared my browser cache 
> > > > > > > so
> > > > > > > that the timestamp in theIf-Modified-Sinceis current timestamp.
> > > It
> > > > > > > doesn't seem to work. Has anyone usedIf-Modified-Sinceon 1.3.1
> > > with
> > > > > > > success?
>
> > > > > > > --
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> > > > > Groups
> > > > > > > "Google App Engine" group.
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> > > google-appengine@googlegroups.com
> > > > > .
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> > > 
> > > > > 
> > > > > > > .
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> > > > > text -
>
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>
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Re: [google-appengine] Re: is there any max() function available in appengine datastore to find max of selected records

[Ulrich]

Max wrote:

Order by salary means an extra index will be built over this field,
which will affect your write speed.

Use a global variable to store max(salary)
  
If you store this global variable in the datastore and have a high 
number of inserts, you have to update this global variable too often and 
it will not work without some kind of sharding.


-Ulrich

On Mar 15, 10:12 am, Takashi Matsuo  wrote:
  

Hi,

Perhaps you can order by salary property descending, and just get the
first one, for getting max value.

max_salaried_employee = Employee.all().order("-salary").get()
max_salary = max_salaried_employee.salary

hope this helps

--
Takashi Matsuo
Kay's daddy

On Mon, Mar 15, 2010 at 11:00 AM, Greg  wrote:


On Mar 14, 3:48 am, pyrocks  wrote:
  

here shall we have any max() function available like in oracle to find
max salaried employee.


In a word, no. You need to store the maximum salary in the datastore,
and every time time a salary changes check to see if it exceeds the
maximum, and update it if so.
  
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Re: [google-appengine] Publish-subscribe to dynamic recipient lists

[Ikai L (Google)]

A couple of thoughts here:

- is removing of friends a common event? similarly, is adding of
friends a common event? (All relative, relative to "reads" of the news
feed)
- From what I remember, the only way to make heavy reads scale is to
write the data multiple times in peoples' streams. Twitter does this,
from what I remember, using a "eventually consistent" model. This is
why your feed will not update for several minutes when they are under
heavy load. The general consensus, though, is that a relational,
normalized model simply will not work.
- the Jaiku engine is open source for your study:
http://code.google.com/p/jaikuengine. This runs on App Engine

Hope these help when you're considering a design.

On Mon, Mar 15, 2010 at 5:32 AM, PEZ  wrote:
> We first modeled publish-subscribe "fan out" using conventional RDBMS
> thinking. It seemed to work at first, but then, since the IN operator
> works the way it does, we quickly realized we couldn't continue on
> that path. We found Brett Slatkin's presentation from last years
> Google I/O and we have now watched it a few times and also played some
> with the http://pubsub-test.appspot.com/ example but it isn't clear to
> us how to  do it with "dynamic" recipient lists.
>
> We want to implement a "News feed" where a user can see messages
> broadcasted by her friends, sorted with newest message first. But the
> feed should reflect changes in her friends list. (If she adds new
> friends, messages from those should be included in the feed, and if
> she removes friends their messages should not be included.) If we use
> the pubsub-test example and attach a recipient list to each message
> this means a lot of manipulation of the recipient lists when users
> connect and disconnect friends.
>
> What we need are some hints on how to "think" when modeling this. Does
> this description even make sense?
>
> --
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Re: [google-appengine] replicating PMF

[Ikai L (Google)]

Can you post some code? It sounds like you are instantiating a
PersistenceManagerFactory instead of doing it once and referencing the
singleton.

On Tue, Mar 16, 2010 at 9:54 AM, david jones  wrote:
> hey, i'm pretty new to the app engine, and basically i'm in the middle
> of creating something whereby i need multiple pages with seperate
> comment systems using PMF. if i try to use my PMF on more than 1 page,
> though, i get an error saying
>
> Caused by: javax.jdo.JDOFatalUserException: Application code attempted
> to create a PersistenceManagerFactory named transactions-optional, but
> one with this name already exists!  Instances of
> PersistenceManagerFactory are extremely slow to create and it is
> usually not necessary to create one with a given name more than once.
> Instead, create a singleton and share it throughout your code.  If you
> really do need to create a duplicate PersistenceManagerFactory (such
> as for a unittest suite), set the
> appengine.orm.disable.duplicate.pmf.exception system property to avoid
> this error.
>        at
> org.datanucleus.store.appengine.jdo.DatastoreJDOPersistenceManagerFactory.getPersistenceManagerFactory(DatastoreJDOPersistenceManagerFactory.java:
> 135)
>
> now i can create a PMF named something seperate and it all works fine
> except it uses the exact same comments that have been posted - not
> exactly what i'm after! so i was wondering if anyone knows how to get
> around this e.g. how to set the
> appengine.orm.disable.duplicate.pmf.exception or something else?
>
> thanks,
> david
>
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>
>



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[google-appengine] Examples of big demanding web apps running on google appengine

[David Barnholdt]

Hi!

I have a demo about appengine in 20 minutes..
Do anyone have some good examples of some Big sites running on google
appengine?

with my best regards,
David

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111 34 Stockholm

Phone: +46 70 200 52 90
www.crisp.se/david.barnholdt

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[google-appengine] Access group info?

[askvictor]

Hi folks,

Is it possible to access information about which (google apps) groups
a user is a member of via the API? I haven't been able to search for
this information as the term 'group' merely finds discussion groups
such as this (there's a tough problem for your algorithm to solve,
google ;)

Cheers,

Victor

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[google-appengine] Multiple Automatically Configured Domains

[Aubrey]

Greetings!

I am investigating the feasibility of creating something like
Weebly.com with App Engine.
Weebly allows anyone to create their own website, and handles hosting
for them as an integrated service.

Weebly provides a free subdomain for each site, but also allows people
to connect their own second level domain name (mydomanname.com) to
their Weebly site.

How would I go about achieving this in App Engine?
In a chat session yesterday on #appengine, I received suggestions for
cname redirects and several other ideas - but no one was sure that
they would work.

Is this supported by App Engine?
If not, why not?
If not, what other options do I have?

-Aubrey Falconer

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[google-appengine] Re: is there any max() function available in appengine datastore to find max of selected records

[Max]

Order by salary means an extra index will be built over this field,
which will affect your write speed.

Use a global variable to store max(salary)

On Mar 15, 10:12 am, Takashi Matsuo  wrote:
> Hi,
>
> Perhaps you can order by salary property descending, and just get the
> first one, for getting max value.
>
> max_salaried_employee = Employee.all().order("-salary").get()
> max_salary = max_salaried_employee.salary
>
> hope this helps
>
> --
> Takashi Matsuo
> Kay's daddy
>
> On Mon, Mar 15, 2010 at 11:00 AM, Greg  wrote:
> > On Mar 14, 3:48 am, pyrocks  wrote:
> >> here shall we have any max() function available like in oracle to find
> >> max salaried employee.
>
> > In a word, no. You need to store the maximum salary in the datastore,
> > and every time time a salary changes check to see if it exceeds the
> > maximum, and update it if so.
>
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[google-appengine] replicating PMF

[david jones]

hey, i'm pretty new to the app engine, and basically i'm in the middle
of creating something whereby i need multiple pages with seperate
comment systems using PMF. if i try to use my PMF on more than 1 page,
though, i get an error saying

Caused by: javax.jdo.JDOFatalUserException: Application code attempted
to create a PersistenceManagerFactory named transactions-optional, but
one with this name already exists!  Instances of
PersistenceManagerFactory are extremely slow to create and it is
usually not necessary to create one with a given name more than once.
Instead, create a singleton and share it throughout your code.  If you
really do need to create a duplicate PersistenceManagerFactory (such
as for a unittest suite), set the
appengine.orm.disable.duplicate.pmf.exception system property to avoid
this error.
at
org.datanucleus.store.appengine.jdo.DatastoreJDOPersistenceManagerFactory.getPersistenceManagerFactory(DatastoreJDOPersistenceManagerFactory.java:
135)

now i can create a PMF named something seperate and it all works fine
except it uses the exact same comments that have been posted - not
exactly what i'm after! so i was wondering if anyone knows how to get
around this e.g. how to set the
appengine.orm.disable.duplicate.pmf.exception or something else?

thanks,
david

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[google-appengine] Increasing Task Queue Quota Limit

[Janne Savukoski]

I managed to burn the whole taskqueue quota (1M) with some runaway
recursive tasks for one of our apps. My bad, but is there any chance
to get a temporary increase on the quota? Next reset is still 18h
away. :)

appid netcycler-qa

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[google-appengine] Question: How to use "login: admin" properly?

[Ennis]

Hi, I am trying to set a section of my application as limited to admin
access only.
When I goto the the protected URL, I get the google login page -
instead of the login page for my google apps account. If I try to
login with my google apps account (which is administrator for the app)
I am told it's the wrong email/password combo.

How can I access the admin-only areas of my app?

Here is my App.yaml file:

application: myapp
version: 1
runtime: python
api_version: 1

handlers:

- url: /DI2/(.*)
  static_files: DI2/\1
  upload: DI2/(.*)
  login: admin

- url: /
  static_files: static/welcome.html
  upload:  static/welcome.html

- url: /
  static_dir: static

- url: /(.*)
  static_files: static/\1
  upload: static/(.*)


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Re: [google-appengine] Re: Error: Server Error

[Alexander Kolesnikov]

Check your logs. I wonder if you will find in them something like "Too many
open files".

On Tue, Mar 16, 2010 at 1:08 PM, riq  wrote:

> Since yesterday I'm getting this error as well. But according to
> AppEngine status (http://code.google.com/status/appengine) everything
> is working fine.
>
> Any idea ? Thanks
>
> My application is: http://www.cocoslive.net
>
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[google-appengine] Re: If-Modified-Since HTTP conditional Get header supported in 1.3.1?

[JC]

I see what you mean.

In my case, the resource (with .xap extension, don't know if that
matters) resides in GAE server as part of the deployed web app; there
is not URL Fetch to fetch the resource from outside server. The
resource is not located in the WEB-INF directory either; it is located
under a directory called ClientBin under root. It is a static file
that I thought should be treated like other static files; say, a jpg
file.


On Mar 16, 2:15 am, Alkis Evlogimenos ('Αλκης Ευλογημένος)
 wrote:
> Ermm ok lets try for a third time :-). Say you have a GAE app and you
> fetch pages from cnn.com. If cnn.com does not support If-Modified-Since then
> you are never getting 304's back, no matter what headers you put in your
> request. It has nothing to do with GAE.
>
> In the example above "server" is cnn.com.
>
> - alkis
>
> 2010/3/16 JC 
>
>
>
> > Are you saying that not all GAE servers running in the Google data
> > center support If-Modified-Since? Can you elaborate a bit more? The
> > Java app was deployed to GAE data center which I assume is running the
> > latest 1.3.1 which claims to support conditional Get.
>
> > On Mar 15, 6:15 pm, Alkis Evlogimenos ('Αλκης Ευλογημένος)
> >  wrote:
> > > With server I mean the server you are fetching pages from. That server
> > might
> > > not have support for If-Modified-Since.
>
> > > - alkis
>
> > > 2010/3/16 JC 
>
> > > > Thanks for the prompt reply!
>
> > > > I don't quite understand what you meant by server not supporting it.
> > > > It is running against central GAE server, not my local development
> > > > server.
>
> > > > As for the date format, This is the dump of the HTTP header through a
> > > > network sniffer as follow.. It seems to be conforming to HTTP spec. Do
> > > > you see anything wrong?
>
> > > > GET /ClientBin/oob.xap HTTP/1.1
> > > > If-Modified-Since: Tue, 16 Mar 2010 00:28:17 GMT
> > > > User-Agent: Silverlight
>
> > > > Thanks,
>
> > > > On Mar 15, 2:22 pm, Alkis Evlogimenos ('Αλκης Ευλογημένος)
> > > >  wrote:
> > > > > If-Modified-Since works in GAE. Either the server you are hitting
> > does
> > > > not
> > > > > support it, or you are sending it a timestamp it doesn't understand.
>
> > > > > - alkis
>
> > > > > On Mon, Mar 15, 2010 at 6:28 PM, JC  wrote:
> > > > > > GAE 1.3.1 for Java includes a fix (issue 575) to support
> > conditional
> > > > > > get for static files. I have tried sending If-Modified-Since Get
> > > > > > header to retrieve a static file from GAE, It always returns 200
> > (with
> > > > > > full payload) instead of 304 (unmodified) even though the static
> > file
> > > > > > hasn't been changed for a while. I have cleared my browser cache so
> > > > > > that the timestamp in the If-Modified-Since is current timestamp.
> > It
> > > > > > doesn't seem to work. Has anyone used If-Modified-Since on 1.3.1
> > with
> > > > > > success?
>
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[google-appengine] Datastore Viewer Constantly Failing

[Seth]

Aloha,

I have been unable to use the Datastore Viewer in the admin pages for
some time now (at least five days).  Every time I try to access it, I
get:

Server Error
A server error has occurred.
Return to Applications screen »

Other pages in my admin screens seem to be functioning just fine.

My add id is adorableurl

Hope this helps!

Thanks,
Seth

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[google-appengine] Using String as primary key and loading large objects?

[Mark]

Hi,

Kind of new to this, two questions if anyone can help:

1) I want to make some class that is persistent on the data store. I
can use a primary key of either Long or String. It would be more
convenient for me to use String as the primary key. Is this going to
really hurt performance-wise when doing lookups for objects vs a Long?


2) I have some objects which are somewhat large, like:

  public class Story {
 private String mId;
 private String mTitle;
 private String mFullText; <-- large
  }

if I want to get a list of Story items, I don't want to spend time
loading the mFullText parameter on each one. I can hold off on loading
that until a user wants to see the full story. Is there a way to
implement two different load methods for Story to control this? Or do
we simply break a class like this up into two separate classes:

  public class StoryDescription {
 private String mId;
 private String mTitle;
  }

  public class StoryText {
 private String mId;
 private String mFullText;
  }

and load as needed?


Thanks

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[google-appengine] Re: Users are not redirected back to app after creating a google account.

[Aurelian]

Totally agree.
I had to build a full authentication system for that reason, because
creating new Google Accounts was very confusing, moreover user was not
forwarded to application.



On Mar 16, 1:55 pm, Albert  wrote:
> Quoted from the 
> linkhttp://code.google.com/appengine/docs/python/users/overview.html#Sign...
>
> "Once the user has signed in or created a Google account, the user is
> redirected back to your application. The app provides the redirect URL
> to the method that generates the sign-in URL."
>
> I have tested this in my app, and the user is not redirected back to
> the app after creating a google account. After creation of the google
> account (after pressing the button marked, "I accept. Create my
> account."), the user is directed to a "a verification link has been
> sent to your email, please check your email" page.
>
> After opening the users email, and clicking the verification link, the
> user is also not redirected to the app.
>
> I believe that this behavior is not good to apps, since users have to
> manually go back to the app after creating a google account. For apps
> that target novice internet users that don't have existing google
> accounts, the "create account" process has to be very streamlined.
>
> By the way, an additional create_account_url() function to the Users
> service could also be handy.

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Re: [google-appengine] Templates in subfolders

[djidjadji]

What is the value of 'path' after the os.path.join()?

2010/3/15 Kenchu :
> Displaying a template that resides in the main folder together with
> the script works just fine, but as soon as I try to display one in a
> subfolder, I get an error:
>
> TemplateDoesNotExist: index.htm
>
> It's weird that it doesn't display the full path.
>
> This is the code I use:
>
> path = os.path.join(os.path.dirname(__file__), 'flash/index.htm')
> self.response.out.write(template.render(path,{}))
>
> Are you not allowed to display templates in subfolders?
>
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[google-appengine] Re: Error: Server Error

[riq]

Since yesterday I'm getting this error as well. But according to
AppEngine status (http://code.google.com/status/appengine) everything
is working fine.

Any idea ? Thanks

My application is: http://www.cocoslive.net

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[google-appengine] Users are not redirected back to app after creating a google account.

[Albert]

Quoted from the link 
http://code.google.com/appengine/docs/python/users/overview.html#Signing_In_and_Out

"Once the user has signed in or created a Google account, the user is
redirected back to your application. The app provides the redirect URL
to the method that generates the sign-in URL."

I have tested this in my app, and the user is not redirected back to
the app after creating a google account. After creation of the google
account (after pressing the button marked, "I accept. Create my
account."), the user is directed to a "a verification link has been
sent to your email, please check your email" page.

After opening the users email, and clicking the verification link, the
user is also not redirected to the app.

I believe that this behavior is not good to apps, since users have to
manually go back to the app after creating a google account. For apps
that target novice internet users that don't have existing google
accounts, the "create account" process has to be very streamlined.

By the way, an additional create_account_url() function to the Users
service could also be handy.

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Re: [google-appengine] Re: If-Modified-Since HTTP conditional Get header supported in 1.3.1?

['Αλκης Ευλογημένος]

Ermm ok lets try for a third time :-). Say you have a GAE app and you
fetch pages from cnn.com. If cnn.com does not support If-Modified-Since then
you are never getting 304's back, no matter what headers you put in your
request. It has nothing to do with GAE.

In the example above "server" is cnn.com.

- alkis


2010/3/16 JC 

> Are you saying that not all GAE servers running in the Google data
> center support If-Modified-Since? Can you elaborate a bit more? The
> Java app was deployed to GAE data center which I assume is running the
> latest 1.3.1 which claims to support conditional Get.
>
> On Mar 15, 6:15 pm, Alkis Evlogimenos ('Αλκης Ευλογημένος)
>  wrote:
> > With server I mean the server you are fetching pages from. That server
> might
> > not have support for If-Modified-Since.
> >
> > - alkis
> >
> > 2010/3/16 JC 
> >
> >
> >
> > > Thanks for the prompt reply!
> >
> > > I don't quite understand what you meant by server not supporting it.
> > > It is running against central GAE server, not my local development
> > > server.
> >
> > > As for the date format, This is the dump of the HTTP header through a
> > > network sniffer as follow.. It seems to be conforming to HTTP spec. Do
> > > you see anything wrong?
> >
> > > GET /ClientBin/oob.xap HTTP/1.1
> > > If-Modified-Since: Tue, 16 Mar 2010 00:28:17 GMT
> > > User-Agent: Silverlight
> >
> > > Thanks,
> >
> > > On Mar 15, 2:22 pm, Alkis Evlogimenos ('Αλκης Ευλογημένος)
> > >  wrote:
> > > > If-Modified-Since works in GAE. Either the server you are hitting
> does
> > > not
> > > > support it, or you are sending it a timestamp it doesn't understand.
> >
> > > > - alkis
> >
> > > > On Mon, Mar 15, 2010 at 6:28 PM, JC  wrote:
> > > > > GAE 1.3.1 for Java includes a fix (issue 575) to support
> conditional
> > > > > get for static files. I have tried sending If-Modified-Since Get
> > > > > header to retrieve a static file from GAE, It always returns 200
> (with
> > > > > full payload) instead of 304 (unmodified) even though the static
> file
> > > > > hasn't been changed for a while. I have cleared my browser cache so
> > > > > that the timestamp in the If-Modified-Since is current timestamp.
> It
> > > > > doesn't seem to work. Has anyone used If-Modified-Since on 1.3.1
> with
> > > > > success?
> >
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Re: [google-appengine] Re: Please delete indexes that I cannot delete

[Shinichi Nakanishi]

Hi Ikai,

It looks like there is one index still remaining with status "Error"
and it's preventing other indexes to be built.

WorkshopDate
workshop ▲ , workshopDate ▲ 
Error

Can you please delete this and let other indexes be created?

Thank you,

Shinichi

On Mon, Mar 15, 2010 at 17:03, Shinichi Nakanishi  wrote:
> Thank you, Ikai.
>
> Shinichi
>
> On Mon, Mar 15, 2010 at 15:21, Ikai L (Google)  wrote:
>> These indexes have been placed into error state. Go ahead and run the
>> vacuum_indexes tool.
>>
>> On Mon, Mar 15, 2010 at 2:20 PM, Shinichi Nakanishi
>>  wrote:
>>> I really need to get rid of these zombie indexes that have been there
>>> for a few days that cannot be deleted by vacuum_indexes.
>>>
>>> Someone from Google, please delete these asap.  I cannot proceed my
>>> development because of these 88 zombie indexes.
>>>
>>> Thank you,
>>>
>>> Shinichi
>>>
>>> On Mon, Mar 15, 2010 at 00:20, Shinichi Nakanishi  
>>> wrote:
 Hi.  I have been trying to delete indexes, but I am not succeeding.

 There are 88 indexes that have never been built for a couple days.
 Their status has been "Building" and never been created or deleted.  I
 have tried appcfg vacuum_indexes for several times but no luck.

 I believe I have tried everything I could, and arrived at a conclusion
 that I have to ask someone from Google to do that.

 Please delete my indexes that I can never get rid of.  My app ID is
 921145.  I need to delete all of 88 indexes.

 Thank you,

 Shinichi

>>>
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>>
>>
>>
>> --
>> Ikai Lan
>> Developer Programs Engineer, Google App Engine
>> http://googleappengine.blogspot.com | http://twitter.com/app_engine
>>
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[google-appengine] Does datastore cache for ReferenceProperty?

[Shinichi Nakanishi]

Does datastore run query for Instructor each time?  Or does it some
sort of cache thing?

If I have these models:

class Instructor(db.Model)
firstName = db.StringProperty()
lastName = db.StringProperty()

class Participant(db.Model)
firstName = db.StringProperty()
lastName = db.StringProperty()
workshop = db.ReferenceProperty(Workshop, collection_name = "participants")

class Workshop(db.Model)
instructor = db.ReferenceProperty(Instructor)

Then if I do the following,

workshop = Workshop.all().get()
for participant in workshop.participants:
someMethod(workshop, participant)

def someMethod(self, workshop, participant)
if (workshop.instructor...  # does it run query every time or does it cache?

If datastore queries Instructor every time when I do
workshop.instructor, I thought I should pass instructor as an
argument.

Shinichi

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