from:"Nickolas Daskalou"

My guess is that zero is not being printed because the internals of
self.response.out.write probably look something like this:

def write(output):
  if output:
# Spit it out
  else:
# Do not spit out anything

Since your zero effectively returns false in the above if condition,
nothing is printed out.

Conclusion: Always convert the final output to a string before sending
it to self.response.out.write (since it's sent to the browser as a
string anyway).


On Dec 22, 9:44 pm, Phoenix peece...@gmail.com wrote:
 Thanks for your concern Wesley..

 Yes.. by screen I meant browser

 As I had said in my first message, printing the 0 on browser isn't my
 objective. I am actually write services in which I just get the input,
 process it and send the processed output in JSON format. So, in this I
 do not need to write anything on the browser using server side
 script.

 But the thing is, the code I wrote didn't work and I needed it debug
 it by writing each and every relevant thing on the browser. And
 printing that zero comes here..

 I tried something like self.response.out.write(str(0)) and 0 is there
 on the screen.. but I generally do not need to do this with any other
 value.. let it be a python list or dictionary.. so I'm just not able
 to know the reason or logic behind this..

 By the way, a good news.. ! That service for which I was writing that
 code is done. It's working.. :)  But that cofusion of mine is still
 intact.. :(

 why that zero is not coming?

 Thanks,
 Chirag S Pithadiya.

 On Dec 22, 2:47 pm, Wesley Chun wesc+...@google.com wrote:

  greetings! i've read your messages and would like to find out more
  about what you are trying to do. i will try to help anyway, based on
  what you have written so far.

  if you are explicitly writing out a response as text/plain, you still
  need to write out a string, regardless of the value. you mention using
  print vs. write. when you're developing a web application, you
  cannot simply use print because that is intended for a user and *is*
  output to the screen.

  with Google App Engine, you're writing a *web application*, and in
  such cases, there is no screen output. rather than a terminal
  window, the end consumer of the data you write out is to a web
  browser. now if by screen, you mean web browser, then please
  disregard what i just said above, because it wasn't clear what you
  meant by screen.

  for web applications, you must output either plain text (MIME file
  type text/plain) or standard HTML (MIME type text/html). regardless of
  whether you use 0, 1, 100, or 1000, as integer literals, or as a value
  of a variable 'new_index', you need to convert it to a string first,
  i.e., str(0), str(100), str(new_index).

  also, if you write this out directly, then the output will be
  text/plain. if you want it to look nice in a web browser, you need to
  enclose the value in valid HTML:
  self.response.out.write('HTMLBODY%d/BODY/HTML' % new_index) or
  something similar.

  if this doesn't answer your question, hopefully it will help you get
  started. or if your problem is completely different, please give us
  more information so we can help you better.

  thanks!
  -wesley
  - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  Core Python Programming, Prentice Hall, (c)2007,2001
  Python Fundamentals, Prentice Hall, (c)2009
     http://corepython.com

  wesley.j.chun :: wesc+...@google.com
  developer relations :: google app engine

  On Mon, Dec 21, 2009 at 11:47 PM, Phoenix peece...@gmail.com wrote:
   It works.. but it's of no use to me.. I need to use a variable which
   can have 0 as a value and while debugging I need to be sure whether
   the value of this variable is coming correctly or not..
   It works with print but not working with write..
   print the 0 isn't my objective.. but I'm just confused why I can't
   print 0...)
   Any other integer is being printed.. then why this issue with 0?

   thanks for your reply..

   On Dec 22, 12:43 pm, Nickolas Daskalou n...@daskalou.com wrote:
   Have you tried:

   self.response.out.write(str(0))

   ?

   On Dec 22, 5:11 pm, Phoenix peece...@gmail.com wrote:

Hi.. this is the code I'm using..

self.response.out.write(0) and 0 is not being on screen.. even if
this 0 an Integer is in some variable.. like this..
new_index = 0
self.response.out.write(new_index)

and nothing comes on screen..

can anyone have any idea?

thanks in advance..



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[google-appengine] Re: Images API questions

*BUMP*


On Dec 21, 3:57 pm, Nickolas Daskalou n...@daskalou.com wrote:
 In Python, if we're using the composite() function from theImagesAPI, is the 
 size of each image layer allowed to be = 1MB, or does
 the combined size of all the image layers have to be = 1MB (eg. 10 x
 100KB layers is allowed, but 11 x 100KB is not)?

 Can we use Blobstores when using composite()?

 Exactly when is the LargeImageError exception thrown? Eg. the answers
 to 1. and 2. below are Yes, but what about 3. and 4.?
 1. If  1MB of data is passed as the image_data before any transforms/
 composites are done?
 2. If the final output data is  1MB?
 3. Can the exception be thrown during the processing of the transforms/
 composites, even if the final output data is = 1MB? If Yes, what are
 the conditions that cause this?
 4. If Yes to 3. = When using a Blobstore for image transforms, is the
 upper limit for a LargeImageError exception higher than if the image
 data is passed via the Image constructor?

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[google-appengine] Re: Sessions

How are you setting the sessions? If you're using cookies, are you
adding an expires value (that's set in the future)? Without an
expires value, cookies will be cleared when the web browser is closed.


On Dec 22, 6:44 am, hemodroid hemodr...@gmail.com wrote:
 It seems like sessions do not last after you close your browser.
 Is it their normal behaviour?

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[google-appengine] Re: Zero (0) is not being printed on screen with self.response.out.write

Happy Christmas!! :)


On Dec 22, 11:41 pm, Phoenix peece...@gmail.com wrote:
 yeah.. Nickolas.. You'r right.. :)
 I tried self.response.out.write(False) and nothing printed on
 browser..
 and tried this as well:
 class test(webapp.RequestHandler):
     def testDef(self):
         v = 2
         if v == 1:
             return 1
         else:
             return 0

     def get(self):
         p = self.testDef()
         self.response.out.write(p)
 Again, the browser window is blank..
 So this is something which I haven't read in any book or tutorial that
 a False value without explicitly converted to a String does not get
 printed on browser.. :)

 Thanks for your reply.. Happy Christmas.. :)

 On Dec 22, 4:46 pm, Nickolas Daskalou n...@daskalou.com wrote:

  My guess is that zero is not being printed because the internals of
  self.response.out.write probably look something like this:

  def write(output):
    if output:
      # Spit it out
    else:
      # Do not spit out anything

  Since your zero effectively returns false in the above if condition,
  nothing is printed out.

  Conclusion: Always convert the final output to a string before sending
  it to self.response.out.write (since it's sent to the browser as a
  string anyway).

  On Dec 22, 9:44 pm, Phoenix peece...@gmail.com wrote:

   Thanks for your concern Wesley..

   Yes.. by screen I meant browser

   As I had said in my first message, printing the 0 on browser isn't my
   objective. I am actually write services in which I just get the input,
   process it and send the processed output in JSON format. So, in this I
   do not need to write anything on the browser using server side
   script.

   But the thing is, the code I wrote didn't work and I needed it debug
   it by writing each and every relevant thing on the browser. And
   printing that zero comes here..

   I tried something like self.response.out.write(str(0)) and 0 is there
   on the screen.. but I generally do not need to do this with any other
   value.. let it be a python list or dictionary.. so I'm just not able
   to know the reason or logic behind this..

   By the way, a good news.. ! That service for which I was writing that
   code is done. It's working.. :)  But that cofusion of mine is still
   intact.. :(

   why that zero is not coming?

   Thanks,
   Chirag S Pithadiya.

   On Dec 22, 2:47 pm, Wesley Chun wesc+...@google.com wrote:

greetings! i've read your messages and would like to find out more
about what you are trying to do. i will try to help anyway, based on
what you have written so far.

if you are explicitly writing out a response as text/plain, you still
need to write out a string, regardless of the value. you mention using
print vs. write. when you're developing a web application, you
cannot simply use print because that is intended for a user and *is*
output to the screen.

with Google App Engine, you're writing a *web application*, and in
such cases, there is no screen output. rather than a terminal
window, the end consumer of the data you write out is to a web
browser. now if by screen, you mean web browser, then please
disregard what i just said above, because it wasn't clear what you
meant by screen.

for web applications, you must output either plain text (MIME file
type text/plain) or standard HTML (MIME type text/html). regardless of
whether you use 0, 1, 100, or 1000, as integer literals, or as a value
of a variable 'new_index', you need to convert it to a string first,
i.e., str(0), str(100), str(new_index).

also, if you write this out directly, then the output will be
text/plain. if you want it to look nice in a web browser, you need to
enclose the value in valid HTML:
self.response.out.write('HTMLBODY%d/BODY/HTML' % new_index) or
something similar.

if this doesn't answer your question, hopefully it will help you get
started. or if your problem is completely different, please give us
more information so we can help you better.

thanks!
-wesley
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Core Python Programming, Prentice Hall, (c)2007,2001
Python Fundamentals, Prentice Hall, (c)2009
   http://corepython.com

wesley.j.chun :: wesc+...@google.com
developer relations :: google app engine

On Mon, Dec 21, 2009 at 11:47 PM, Phoenix peece...@gmail.com wrote:
 It works.. but it's of no use to me.. I need to use a variable which
 can have 0 as a value and while debugging I need to be sure whether
 the value of this variable is coming correctly or not..
 It works with print but not working with write..
 print the 0 isn't my objective.. but I'm just confused why I can't
 print 0...)
 Any other integer is being printed.. then why this issue with 0?

 thanks for your reply..

 On Dec 22, 12:43 pm, Nickolas Daskalou n...@daskalou.com wrote:
 Have you

[google-appengine] Re: Images API questions

2009-12-24 Thread Nickolas Daskalou

Thanks Jason, I'll play with it and see how I go :)

On Dec 24, 12:19 pm, Jason (Google) apija...@google.com wrote:
I just threw together a small test application and it looks like the
combined size of all image inputs has to be less than 1 MB. So in other
words, you can composite 10 100 KB images but not 11 or higher.

I haven't explicitly tested composite with the Blobstore service, but I'll
make an educated guess that this will work, yes. Composite operates on image
objects, and you can create an image object from a Blobstore key using
images.Image(blob_key=blob_key). Since other transformations work with
Blobstore keys, I don't see why composite should be any different -- let me
know if it is, and I'll file a bug. Keep in mind that the final output size
still has to be under 1 MB regardless.

As long as the image inputs to the transformations are within the data size
limits (when using Blobstore keys, this limit is the same as the maximum
allowed Blob size) AND the output is smaller than 1 MB, you shouldn't see
any exceptions thrown during the actual processing, at least not from the
call itself. Of course, the other quotas (e.g. requests have to complete in
30 seconds, etc.) still apply.

http://code.google.com/appengine/docs/python/images/overview.html#Tra...

Cheers!
- Jason

On Sun, Dec 20, 2009 at 8:57 PM, Nickolas Daskalou n...@daskalou.comwrote:

In Python, if we're using the composite() function from the Images
API, is the size of each image layer allowed to be = 1MB, or does
the combined size of all the image layers have to be = 1MB (eg. 10 x
100KB layers is allowed, but 11 x 100KB is not)?

Can we use Blobstores when using composite()?

Exactly when is the LargeImageError exception thrown? Eg. the answers
to 1. and 2. below are Yes, but what about 3. and 4.?
1. If 1MB of data is passed as the image_data before any transforms/
composites are done?
2. If the final output data is 1MB?
3. Can the exception be thrown during the processing of the transforms/
composites, even if the final output data is = 1MB? If Yes, what are
the conditions that cause this?
4. If Yes to 3. = When using a Blobstore for image transforms, is the
upper limit for a LargeImageError exception higher than if the image
data is passed via the Image constructor?

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[google-appengine] Re: How to test my application with local database

2010-01-03 Thread Nickolas Daskalou

You can't use MySQL or any other traditional RDBMS with App Engine,
you'll need to use Google's Datastore:

http://code.google.com/appengine/docs/java/datastore/


On Jan 2, 7:04 pm, mobject mobj...@gmail.com wrote:
 Hello,

 I would like to test my app with local db before deploying to
 APPEngine but I could not config my jdo to connect to my local Mysql
 database.

 Could anyone help me on this ?

 Thank you in advance,

 mobject

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[google-appengine] Using different frameworks depending on the hostname?

2010-01-04 Thread Nickolas Daskalou

This is probably a pure Python question.

Is it possible to use a different framework depending on what hostname the
request was made to? For example:

api.mydomain.com (API service) - webapp
admin.mydomain.com (Backend administration) - app-engine-patch (AEP)

The data model needs to be the same for each framework (worst case would
require a duplicated models.py file, which is ok).

We want AEP for its admin capabilities for admin.mydomain.com, but we want
responses from api.mydomain.com to be as fast as possible so we'd prefer to
use webapp, which responds faster than AEP on cold requests (requests
where there is no app caching yet).

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Re: [google-appengine] exception in min() of python

2010-01-04 Thread Nickolas Daskalou

I'm guessing you assigned min to an integer value beforehand, eg:

min = 123

if x1  min( x2, x3 ):



2010/1/5 saintthor saintt...@gmail.com

 code:

 if x1  min( x2, x3 ):

 gets an exception: TypeError: 'int' object is not callable

 x1,x2,x3 are floats.

 change the code to:

 if x1  x2 and x1  x3:

 everything is OK.

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Re: [google-appengine] Re: Using different frameworks depending on the hostname?

2010-01-06 Thread Nickolas Daskalou

Thanks johnwlockwood. I ended up doing this:

app.yaml:

- url: /.*
  script: main.py


main.py:
import os
import re

regex_api_site = re.compile('^api\.(localhost|mydomain\.com)$')
regex_admin_site = re.compile('^admin\.(localhost|mydomain\.com)$')

handlers_map = [
{'regex':regex_api_site,
 'handler':'WEBAPP'},
{'regex':regex_admin_site,
 'handler':'APP_ENGINE_PATCH'},
]

def main():
  http_host = os.environ['SERVER_NAME']
  handler = None
  for handler_info in handlers_map:
if handler_info['regex'].match(http_host):
  if handler_info['handler'] == 'WEBAPP':
# main_webapp.py is in the root application directory
from main_webapp import main as handler
  elif handler_info['handler'] == 'APP_ENGINE_PATCH':
from common.appenginepatch.main import main as handler
  break
  if not handler:
import logging
logging.critical('No handler found for HTTP host %s',http_host)
return 1 # Not sure if this is the correct way to return failure
  return handler()

if __name__ == '__main__':
  main()


This seems to work well, although I haven't tried sharing models yet.


2010/1/7 johnwlockwood johnwlockw...@gmail.com

 you setup the app.yaml to send urls starting with /admin/ to a python
 file that loads app-engine-patch and everything else to a main.py that
 loads webapp.
 something like:

 - url: /admin/.*
  script: app_engine_patch_loader.py
  login: admin

 - url: /.*
  script: main.py
  secure: never


 Then in your django urls.py handle /admin



 On Jan 4, 9:15 pm, Nickolas Daskalou n...@daskalou.com wrote:
  This is probably a pure Python question.
 
  Is it possible to use a different framework depending on what hostname
 the
  request was made to? For example:
 
  api.mydomain.com (API service) - webapp
  admin.mydomain.com (Backend administration) - app-engine-patch (AEP)
 
  The data model needs to be the same for each framework (worst case would
  require a duplicated models.py file, which is ok).
 
  We want AEP for its admin capabilities for admin.mydomain.com, but we
 want
  responses from api.mydomain.com to be as fast as possible so we'd prefer
 to
  use webapp, which responds faster than AEP on cold requests (requests
  where there is no app caching yet).

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Re: [google-appengine] Re: api to determine if application is running on a development server?

2010-01-06 Thread Nickolas Daskalou

What about:

import os

if 'Development' == os.environ['SERVER_SOFTWARE][:11]:
  # On dev server
else:
  # On production server

Does that work for you johnwlockwood?


2010/1/7 johnwlockwood johnwlockw...@gmail.com

 OK, that doesn't seem to work.

 I personally do this, and I know it works:

 import os
 PROJECT_ROOT = os.path.abspath(os.path.dirname(__file__))

 if not PROJECT_ROOT.startswith(/base/data/home/apps/MYAPPNAME):
DEVELOPMENT = True
DEBUG = True
GOOGLE_MAPS_API_KEY = VSE...
 else:
DEVELOPMENT = False
DEBUG = False
GOOGLE_MAPS_API_KEY = GER...



 On Jan 6, 5:40 pm, johnwlockwood johnwlockw...@gmail.com wrote:
  You can use:
 
  if os.environ['SERVER_SOFTWARE'].contains('Development')
 
  -John
 
  On Jan 2, 10:26 pm, Jeremy Faller jeremy.fal...@gmail.com wrote:
 
 
 
   Hello all:
 
   I've been fooling with AppEngine and the Google Maps APIs, and I'm
   running into a bit of a snag.  The Google Maps APIs require a 'key'
   url parameter.  The key parameter is hashed to your domain name, so if
   I've got a img tag from localhost, the key differs than from when
   I'm running on the Google servers.
 
   I'd like to programmatically switch the key depending on whether I'm
   running in the development server on my localhost, or on Google's
   infrastructure.  Does anyone know an API that I can call that will
   tell me if I'm running in debug mode or not?  Specifically, I'm
   looking for (in python):
 
   _LOCALHOST_KEY= 'ABQInfs7bKE82qgb3Zc2YyS-
   oBT2yXp_ZAY8_ufC3CFXhHIE1NvwkxSySz_REpPq-4WZA27OwgbtyR3VcA'
   _MY_DOMAIN_KEY = 'xyzpdq'
 
   def GoogleMapsKey():
 if IsRunningLocalHost():  # What's this API?
   return _LOCALHOST_KEY
 return _MY_DOMAIN_KEY
 
   Thanks in advance.
 
   Regards,
   Jeremy Faller

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Re: [google-appengine] Re: Quota on number of entity types / kinds?

2010-01-08 Thread Nickolas Daskalou

You could get the dev server to update index.yaml with the dynamic indexes
by running a query on the dev Datastore that would require the desired index
on your dynamic entity kind. However if it's not possible to know all the
dynamic entity kinds you'll need on the live server, then this wouldn't
work.

What about creating a base PolyModel class, and have all your dynamic entity
kinds inherit from that?

2010/1/9 RyanD r...@dewell.org

Hmm, nevermind, I see the issue in the issue tracker related to an
Index Management API. I guess I'm not the only one. Starring it.

On Jan 8, 1:46 pm, RyanD r...@dewell.org wrote:
One followup question to the case described above:

If I want entity types that are application controlled, and
dynamically created through the low level API (as described above),
then there is no way to create indexes unless there is also some kind
of low level API for index creation. As it stands the index files
appear to be a static part of the uploaded application files, which
wouldn't work with dynamically create entity types. Am I
understanding this index limitation correctly? If so, are there any
long term plans for a low level index API?

Ryan

On Nov 19 2009, 11:53 am, Ikai L (Google) ika...@google.com wrote:

Ryan,

The answer to both of your questions is no with a gotcha. Unlike an
RDBMS
in which tables can enforce some degree of the concept of Type,
BigTable
has no concept of type or tables. Entities are mapped by an Entity
index,
which in turn is also stored in BigTable. Searchable/filterable fields
on an
entity also generate indexes, and composite indexes are also generated
depending on what queries are being done. There is no limit to the
amount of
entities you can store, but you will only be able to retrieve 1000 with
any
given query until we release cursor support in an upcoming release.

We'll be publishing an article that describes how the data store works
underneath the hood soon. I'll post it when it goes live.

On Sat, Nov 14, 2009 at 5:55 PM, RyanD r...@dewell.org wrote:
A couple of quota questions:

1) Mainly: I'm looking to develop an application that has an
*unbounded* number of entity types / kinds (by using the low level
Java API). Is this possible, or is there some limit to the number of
entity types / kinds that an application may have?

2) Any limit on the number of entries for a single entity type /
kind?

Thanks,

Ryan

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Re: [google-appengine] Server locations of Google App Engine

2010-01-12 Thread Nickolas Daskalou

This is not available right now. I think there were talks of looking into
this in the future. Google guys feel free to chime in.


2010/1/12 rbginge rhbol...@codecircle.com

 Is it possible to configure your app so that it is served from Europe?

 I am trying to access a web service that only accepts requests from
 certain countries.

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Re: [google-appengine] Re: This App Engine is a JOKE

Wow, reading the comments on that issue scares me. Does Google really block
App Engine access in those countries, or are those countries blocking GAE
IPs?

2010/1/14 WallyDD shaneb...@gmail.com

http://code.google.com/p/googleappengine/issues/detail?id=1072

On Jan 14, 4:19 pm, Nick Johnson (Google) nick.john...@google.com
wrote:
On Thu, Jan 14, 2010 at 5:38 AM, WallyDD shaneb...@gmail.com wrote:
It would be nice if people could use some actual examples as to why
app engine is a joke. One problem with emails doesn't cut it. The time
limit has been discussed until we are all sick of it.

I am not convinced that Google has a lot of money making websites on
it (whether they make money through the hosting fees or the adsense
revenue).

Next up I will go and figure out why I keep getting all these timeouts
in my logfile. I hope this isn't a case of a hosting provider
overloading their server.

For my two cents (slightly off topic);
No big company is using it exclusively for their website needs.
Bestbuy uses it for some very small part. The whitehouse? I wonder
what that is about.
Google also blocks GAE to quite a few countries yet points fingers at
the Chinese Govt. Why doesn't Google give Hillary the finger?

This is not correct. We do not block any App Engine site for any country
or
region. Any blocking is entirely due to third parties between the user
and
our servers.

-Nick Johnson

On Jan 12, 8:41 am, mateusz mateusz.r...@gmail.com wrote:
Standard servlet, sometimes work sometimes not throwing: Request was
aborted after waiting too long to attempt to service your request. -
I think it's when application is waken up from sleeping, but no
pattern - strange;
Another joke, when I am sending emails from appliacation, it's
sometimes send sometimes NOT, without exceptions; if I send to google
account - it's delivered in a second; when I send to other account
(not gmail), I have to wait long time to be delivered;

It's wasting time to think that you can use google app engine as
production environment event for the smallest form based application.

Do sth with it or close that business;

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[google-appengine] Running some code immediately before a Datastore put()?

I have a property of a Model that is a hash of another property of the same
Model, eg:

class MyModel(db.Model):
  something = db.StringProperty()
  something_hash = db.StringProperty()
  def generate_hash(self):
self.something_hash = sha1(self.something)

I want generate_hash() to be automatically called just before the entity is
put() into the Datastore, without the developer having to explicitly call
entity.generate_hash().

I know I can create a put() method that makes such a call and then calls
put() on the superclass, but (a) is that the best way to do it, and (b) if
the put() is part of a batch put (eg. via db.put(entities)), will the put()
method of each model instance still be called?

Nick
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Re: [google-appengine] Re: Running some code immediately before a Datastore put()?

Thanks guys, both great suggestions.

I'll try and get PreCallHook working because that would allow me to add a
pre_put() method to my Models, and then using these PreCallHooks I can
call pre_put() for each of the entities being put into the Datastore.

Failing that, I'll create a new derived property for my Model and do as
Devel63 said.

2010/1/15 Devel63 danstic...@gmail.com

Nick,

I've been faced with your exact situation. I have to say I don't
understand PreCallHook, and maybe that would be the best approach, but
here's what I do know.

Overriding put is a bad idea, and as you point out, the override
will not be called in a batch put.

I found that the most elegant solution was to derive a new type of
db.Property, and override its get_value_for_datastore. Then GAE will
automatically do what you want regardless of how the entity is being
put.

On Jan 14, 1:51 am, Eric Ka Ka Ng ngk...@gmail.com wrote:
would a PreCallHook works for your case?

http://code.google.com/appengine/articles/hooks.html

- eric

2010/1/14 Nickolas Daskalou n...@daskalou.com:

I have a property of a Model that is a hash of another property of the
same
Model, eg:

class MyModel(db.Model):
something = db.StringProperty()
something_hash = db.StringProperty()
def generate_hash(self):
self.something_hash = sha1(self.something)

I want generate_hash() to be automatically called just before the
entity is
put() into the Datastore, without the developer having to explicitly
call
entity.generate_hash().

I know I can create a put() method that makes such a call and then
calls
put() on the superclass, but (a) is that the best way to do it, and (b)
if
the put() is part of a batch put (eg. via db.put(entities)), will the
put()
method of each model instance still be called?

Nick

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Re: [google-appengine] Re: Running some code immediately before a Datastore put()?

I'm pretty sure the code on the GAE Hooks article (
http://code.google.com/appengine/articles/hooks.html) is wrong.

4th code snippet, shouldn't the very first line:

def path_appengine():

be moved to the bottom, just above this line:

apiproxy_stub_map.apiproxy.GetPreCallHooks().Append()

2010/1/15 Nickolas Daskalou n...@daskalou.com

Thanks guys, both great suggestions.

Failing that, I'll create a new derived property for my Model and do as
Devel63 said.

2010/1/15 Devel63 danstic...@gmail.com

Nick,

I've been faced with your exact situation. I have to say I don't
understand PreCallHook, and maybe that would be the best approach, but
here's what I do know.

Overriding put is a bad idea, and as you point out, the override
will not be called in a batch put.

On Jan 14, 1:51 am, Eric Ka Ka Ng ngk...@gmail.com wrote:
would a PreCallHook works for your case?

http://code.google.com/appengine/articles/hooks.html

- eric

2010/1/14 Nickolas Daskalou n...@daskalou.com:

I have a property of a Model that is a hash of another property of the
same
Model, eg:

class MyModel(db.Model):
something = db.StringProperty()
something_hash = db.StringProperty()
def generate_hash(self):
self.something_hash = sha1(self.something)

I want generate_hash() to be automatically called just before the
entity is
put() into the Datastore, without the developer having to explicitly
call
entity.generate_hash().

I know I can create a put() method that makes such a call and then
calls
put() on the superclass, but (a) is that the best way to do it, and
(b) if
the put() is part of a batch put (eg. via db.put(entities)), will the
put()
method of each model instance still be called?

Nick

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Re: [google-appengine] Re: This App Engine is a JOKE

In the future if Google allows us to choose which country our apps are
hosted in and we choose to host outside the US, would that lift this
restriction?

2010/1/15 Wesley Chun (Google) wesc+...@google.com wesc%2b...@google.com

Cuba, Iran, Iraq, North Korea, Syria, and Sudan are a magical group of
countries known as the T-6 or Country Group E:1. (it used to be
T-7 and included Libya.). Businesses based in the US are not allowed
to export products that fall under the ENC license exception to such
countries. ENC includes encryption items (includes source code,
technology and open cryptographic interface) and encryption
commodities (software and components, network infrastructure
encryption products, commercial source code and general purpose
toolkits):

More on E:1 and ENC
http://www.bis.doc.gov/encryption/lechart1_sec508.htm (scroll down to
bottom for definition of E:1 and the license exception type ENC)
http://www.ecustoms.com/ecustoms-glossary.cfm (look up an easier to
read definition of the ENC license exception)
https://bxa.ntis.gov/whatsnewcgi.html?filename=countrygrpe1.asc (see
SUMMARY section)

Info about US-based technology companies and this restriction:

http://www.cisco.com/web/about/doing_business/legal/global_export_trade/faqs.html
http://www.goarticles.com/cgi-bin/showa.cgi?C=1655904

The bottom line is that this is not a corporate decision... it's
federal law.

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Core Python Programming, Prentice Hall, (c)2007,2001
Python Fundamentals, Prentice Hall, (c)2009
http://corepython.com

wesley.j.chun :: wesc+...@google.com wesc%2b...@google.com
developer relations :: google app engine

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[google-appengine] EntityProto instance to Model instance?

How can I convert an EntityProto to a Model instance?

I have a Model method, pre_put(), that I want to call on each Model instance
before it's Put into the Datastore, using hooks (eg:
http://code.google.com/appengine/articles/hooks.html).

My hook code looks like this:

def hook(service, call, request, response):
assert service == 'datastore_v3'
if call == 'Put':
for entity in request.entity_list():
entity.pre_put()

When the hook is called and runs, I get this error:

AttributeError: EntityProto instance has no attribute 'pre_put'

Is there any way to convert the entities in request.entity_list() to their
original Models, manipulate them, and then convert them back to an
EntityProto instance? Or even better, if the EntityProto instances have
references to the actual Model instances which we can access and manipulate?
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Re: [google-appengine] EntityProto instance to Model instance?

2010-01-16 Thread Nickolas Daskalou

Does anyone have an answer for this? Google guys?

2010/1/15 Kapil Kaisare kksm19820...@gmail.com

As an aside: what is an EntityProto, and is there a link in the GAE
documentation for it?

Regards,
Kaisare, Kapil Sadashiv

On Fri, Jan 15, 2010 at 09:37, Nickolas Daskalou n...@daskalou.comwrote:

How can I convert an EntityProto to a Model instance?

I have a Model method, pre_put(), that I want to call on each Model
instance before it's Put into the Datastore, using hooks (eg:
http://code.google.com/appengine/articles/hooks.html).

My hook code looks like this:

def hook(service, call, request, response):
assert service == 'datastore_v3'
if call == 'Put':
for entity in request.entity_list():
entity.pre_put()

When the hook is called and runs, I get this error:

AttributeError: EntityProto instance has no attribute 'pre_put'

Is there any way to convert the entities in request.entity_list() to their
original Models, manipulate them, and then convert them back to an
EntityProto instance? Or even better, if the EntityProto instances have
references to the actual Model instances which we can access and manipulate?

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Re: [google-appengine] how to download my own project hosted on Google app engine

2010-01-17 Thread Nickolas Daskalou

No, you can't currently do that.

There's an entry for it in the issue tracker, star it if you like:
http://code.google.com/p/googleappengine/issues/detail?id=1047


2010/1/18 jaljal jallouli.mo...@gmail.com

 Hi,

 I want to download my own project hosted on Google app engine because
 I had losted it.

 Can I do that  ?

 Thanks

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Re: [google-appengine] Re: EntityProto instance to Model instance?

2010-01-17 Thread Nickolas Daskalou

Since these are not documented online anywhere, is it possible these
functions may change in the future (and hence break my code)?

2010/1/18 Andy Freeman ana...@earthlink.net

Search in google/appengine/ext/db/__init__.py for protobuf functions.

On Jan 16, 9:21 pm, Nickolas Daskalou n...@daskalou.com wrote:
Does anyone have an answer for this? Google guys?

2010/1/15 Kapil Kaisare kksm19820...@gmail.com

As an aside: what is an EntityProto, and is there a link in the GAE
documentation for it?

Regards,
Kaisare, Kapil Sadashiv

On Fri, Jan 15, 2010 at 09:37, Nickolas Daskalou n...@daskalou.com
wrote:

How can I convert an EntityProto to a Model instance?

I have a Model method, pre_put(), that I want to call on each Model
instance before it's Put into the Datastore, using hooks (eg:
http://code.google.com/appengine/articles/hooks.html).

My hook code looks like this:

def hook(service, call, request, response):
assert service == 'datastore_v3'
if call == 'Put':
for entity in request.entity_list():
entity.pre_put()

When the hook is called and runs, I get this error:

AttributeError: EntityProto instance has no attribute 'pre_put'

Is there any way to convert the entities in request.entity_list() to
their
original Models, manipulate them, and then convert them back to an
EntityProto instance? Or even better, if the EntityProto instances
have
references to the actual Model instances which we can access and
manipulate?

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Re: [google-appengine] Re: EntityProto instance to Model instance?

2010-01-17 Thread Nickolas Daskalou

Will do, thanks Andy.

2010/1/18 Andy Freeman ana...@earthlink.net

I asked that question wrt db.class_for_kind and was told that it was
safe to assume that it would always be there.

I'd guess that model_from_protobuf should be safe as well.

File a bug requesting that it be added to the documented function
list.

On Jan 17, 6:26 pm, Nickolas Daskalou n...@daskalou.com wrote:
Since these are not documented online anywhere, is it possible these
functions may change in the future (and hence break my code)?

2010/1/18 Andy Freeman ana...@earthlink.net

Search in google/appengine/ext/db/__init__.py for protobuf functions.

On Jan 16, 9:21 pm, Nickolas Daskalou n...@daskalou.com wrote:
Does anyone have an answer for this? Google guys?

2010/1/15 Kapil Kaisare kksm19820...@gmail.com

As an aside: what is an EntityProto, and is there a link in the GAE
documentation for it?

Regards,
Kaisare, Kapil Sadashiv

On Fri, Jan 15, 2010 at 09:37, Nickolas Daskalou
n...@daskalou.com
wrote:

How can I convert an EntityProto to a Model instance?

I have a Model method, pre_put(), that I want to call on each
Model
instance before it's Put into the Datastore, using hooks (eg:
http://code.google.com/appengine/articles/hooks.html).

My hook code looks like this:

def hook(service, call, request, response):
assert service == 'datastore_v3'
if call == 'Put':
for entity in request.entity_list():
entity.pre_put()

When the hook is called and runs, I get this error:

AttributeError: EntityProto instance has no attribute 'pre_put'

Is there any way to convert the entities in request.entity_list()
to
their
original Models, manipulate them, and then convert them back to an
EntityProto instance? Or even better, if the EntityProto instances
have
references to the actual Model instances which we can access and
manipulate?

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Re: [google-appengine] Re: EntityProto instance to Model instance?

2010-01-18 Thread Nickolas Daskalou

I've managed to get this going, with the help of the comments in this thread
and Nick Johnson's blog post (
http://blog.notdot.net/2009/11/API-call-hooks-for-fun-and-profit).

My hook code now looks like this:

def hook(service, call, request, response):
assert service == 'datastore_v3'
if call == 'Put':
for i in range(request.entity_size()):
entity_pb = request.mutable_entity(i)
entity = db.model_from_protobuf(entity_pb)
try:
entity.pre_put()
entity_pb.CopyFrom(db.model_to_protobuf(entity))
except:
pass

This seems highly inefficient though, because before an entity is put into
the Datastore, it's converted from a Model instance to an EntityProto
instance, then back to a Model instance and finally back to an EntityProto
instance (Model-EntityProto-Model-EntityProto).

Google guys, is there a more efficient way to do this?


2010/1/18 Nickolas Daskalou n...@daskalou.com

 Will do, thanks Andy.


 2010/1/18 Andy Freeman ana...@earthlink.net

  I asked that question wrt db.class_for_kind and was told that it was
 safe to assume that it would always be there.

 I'd guess that model_from_protobuf should be safe as well.

 File a bug requesting that it be added to the documented function
 list.

 On Jan 17, 6:26 pm, Nickolas Daskalou n...@daskalou.com wrote:
  Since these are not documented online anywhere, is it possible these
  functions may change in the future (and hence break my code)?
 
  2010/1/18 Andy Freeman ana...@earthlink.net
 
 
 
   Search in google/appengine/ext/db/__init__.py for protobuf functions.
 
   On Jan 16, 9:21 pm, Nickolas Daskalou n...@daskalou.com wrote:
Does anyone have an answer for this? Google guys?
 
2010/1/15 Kapil Kaisare kksm19820...@gmail.com
 
 As an aside: what is an EntityProto, and is there a link in the
 GAE
 documentation for it?
 
 Regards,
 Kaisare, Kapil Sadashiv
 
 On Fri, Jan 15, 2010 at 09:37, Nickolas Daskalou 
 n...@daskalou.com
   wrote:
 
 How can I convert an EntityProto to a Model instance?
 
 I have a Model method, pre_put(), that I want to call on each
 Model
 instance before it's Put into the Datastore, using hooks (eg:
http://code.google.com/appengine/articles/hooks.html).
 
 My hook code looks like this:
 
 def hook(service, call, request, response):
 assert service == 'datastore_v3'
 if call == 'Put':
 for entity in request.entity_list():
 entity.pre_put()
 
 When the hook is called and runs, I get this error:
 
 AttributeError: EntityProto instance has no attribute 'pre_put'
 
 Is there any way to convert the entities in request.entity_list()
 to
   their
 original Models, manipulate them, and then convert them back to
 an
 EntityProto instance? Or even better, if the EntityProto
 instances
   have
 references to the actual Model instances which we can access and
   manipulate?
 
 --
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Re: [google-appengine] Re: EntityProto instance to Model instance?

2010-01-19 Thread Nickolas Daskalou

Ok, cheers Nick.


2010/1/20 Nick Johnson (Google) nick.john...@google.com

 Hi Nickolas,

 On Tue, Jan 19, 2010 at 1:09 AM, Nickolas Daskalou n...@daskalou.comwrote:

 I've managed to get this going, with the help of the comments in this
 thread and Nick Johnson's blog post (
 http://blog.notdot.net/2009/11/API-call-hooks-for-fun-and-profit).

 My hook code now looks like this:


 def hook(service, call, request, response):
 assert service == 'datastore_v3'
 if call == 'Put':
 for i in range(request.entity_size()):
 entity_pb = request.mutable_entity(i)
 entity = db.model_from_protobuf(entity_pb)
 try:
 entity.pre_put()
 entity_pb.CopyFrom(db.model_to_protobuf(entity))
 except:
 pass

 This seems highly inefficient though, because before an entity is put into
 the Datastore, it's converted from a Model instance to an EntityProto
 instance, then back to a Model instance and finally back to an EntityProto
 instance (Model-EntityProto-Model-EntityProto).

 Google guys, is there a more efficient way to do this?


 Monkeypatching the db module to call pre_put in the appropriate place would
 be a better way to do this, though it's subject to breakage as the API
 changes.

 -Nick Johnson



 2010/1/18 Nickolas Daskalou n...@daskalou.com

 Will do, thanks Andy.


 2010/1/18 Andy Freeman ana...@earthlink.net

  I asked that question wrt db.class_for_kind and was told that it was
 safe to assume that it would always be there.

 I'd guess that model_from_protobuf should be safe as well.

 File a bug requesting that it be added to the documented function
 list.

 On Jan 17, 6:26 pm, Nickolas Daskalou n...@daskalou.com wrote:
  Since these are not documented online anywhere, is it possible these
  functions may change in the future (and hence break my code)?
 
  2010/1/18 Andy Freeman ana...@earthlink.net
 
 
 
   Search in google/appengine/ext/db/__init__.py for protobuf
 functions.
 
   On Jan 16, 9:21 pm, Nickolas Daskalou n...@daskalou.com wrote:
Does anyone have an answer for this? Google guys?
 
2010/1/15 Kapil Kaisare kksm19820...@gmail.com
 
 As an aside: what is an EntityProto, and is there a link in the
 GAE
 documentation for it?
 
 Regards,
 Kaisare, Kapil Sadashiv
 
 On Fri, Jan 15, 2010 at 09:37, Nickolas Daskalou 
 n...@daskalou.com
   wrote:
 
 How can I convert an EntityProto to a Model instance?
 
 I have a Model method, pre_put(), that I want to call on each
 Model
 instance before it's Put into the Datastore, using hooks (eg:
http://code.google.com/appengine/articles/hooks.html).
 
 My hook code looks like this:
 
 def hook(service, call, request, response):
 assert service == 'datastore_v3'
 if call == 'Put':
 for entity in request.entity_list():
 entity.pre_put()
 
 When the hook is called and runs, I get this error:
 
 AttributeError: EntityProto instance has no attribute 'pre_put'
 
 Is there any way to convert the entities in
 request.entity_list() to
   their
 original Models, manipulate them, and then convert them back to
 an
 EntityProto instance? Or even better, if the EntityProto
 instances
   have
 references to the actual Model instances which we can access
 and
   manipulate?
 
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Re: [google-appengine] Re: Scalability problem in GAE

2010-01-20 Thread Nickolas Daskalou

Hi mani,

I have a question. How did you get appstats to not require an admin login in
production?

Nick

2010/1/20 mani doraisamy mdorais...@orangescape.com

Same request, but another query has degraded from 45ms to 846ms:
http://247-test.appspot.com/stats/details?time=1263968821144
http://247-test.appspot.com/stats/details?time=1263908256446

thanks,
mani

On Jan 20, 4:00 pm, mani doraisamy mdorais...@orangescape.com wrote:
Sorry. I got the degradation wrong. Datastore degrades from 40ms to
1283ms.

thanks,
mani

On Jan 20, 3:48 pm, mani doraisamy mdorais...@orangescape.com wrote:

Here are the stats for the same request at 05:37 Vs 10:49 on
2010-01-19:
http://247-test.appspot.com/stats/details?time=1263908256446http://24...

It just returns 2 entities. But the datastore query degrades from
256ms to 1760ms (6.8x degradation). Memcache also seems to degrade,
but not as much as datastore. Any suggestions?

thanks,
mani

On Jan 19, 4:18 pm, mani doraisamy mdorais...@orangescape.com wrote:

Thanks for the link, Danny. This is the best profiling tool i have
used. Well done, Guido!

Will get back with the performance data for off-peak Vs peak hours.

thanks,
mani

On Jan 17, 9:37 pm, Danny Tuppeny da...@tuppeny.com wrote:

Have you identified what part of your page is taking additional
time?

Guido van Rossum wrote a library called Appstats to help profile
time
spent on API calls. I'd recommend setting it up (it works in
production) to see if you can identify where this time is being
spent.

I wrote a short article about Appstats on my blog with some
screenshots showing the sort of data you can get out of it:

http://blog.dantup.com/2010/01/profiling-google-app-engine-with-appstats

Hope this helps.

Danny

On Jan 16, 8:24 pm, mani doraisamy mdorais...@orangescape.com
wrote:

Recently, we have been running into frequent performance
problems,
especially between 7-10pm IST. Requests that used to take 600ms
are
taking almost 4 secs.

- Has anyone faced similar problems recently?
- What is the limit for memcache per account? How do we find the
cache
expiry pattern? (actual expiry Vs specified expiry)

thanks,
mani

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Re: [google-appengine] Re: Scalability problem in GAE

2010-01-20 Thread Nickolas Daskalou

Technical. I tried editing the appstats code to turn off this admin user
requirement, but I kept getting a 500 error.

2010/1/21 mani doraisamy mdorais...@orangescape.com

Is that a technical question or process question?

On Jan 20, 4:35 pm, Nickolas Daskalou n...@daskalou.com wrote:
Hi mani,

I have a question. How did you get appstats to not require an admin login
in
production?

Nick

2010/1/20 mani doraisamy mdorais...@orangescape.com

Same request, but another query has degraded from 45ms to 846ms:
http://247-test.appspot.com/stats/details?time=1263968821144
http://247-test.appspot.com/stats/details?time=1263908256446

thanks,
mani

On Jan 20, 4:00 pm, mani doraisamy mdorais...@orangescape.com wrote:
Sorry. I got the degradation wrong. Datastore degrades from 40ms to
1283ms.

thanks,
mani

On Jan 20, 3:48 pm, mani doraisamy mdorais...@orangescape.com
wrote:

Here are the stats for the same request at 05:37 Vs 10:49 on
2010-01-19:
http://247-test.appspot.com/stats/details?time=1263908256446http://24.
..

It just returns 2 entities. But the datastore query degrades from
256ms to 1760ms (6.8x degradation). Memcache also seems to degrade,
but not as much as datastore. Any suggestions?

thanks,
mani

On Jan 19, 4:18 pm, mani doraisamy mdorais...@orangescape.com
wrote:

Thanks for the link, Danny. This is the best profiling tool i
have
used. Well done, Guido!

Will get back with the performance data for off-peak Vs peak
hours.

thanks,
mani

On Jan 17, 9:37 pm, Danny Tuppeny da...@tuppeny.com wrote:

Have you identified what part of your page is taking additional
time?

Guido van Rossum wrote a library called Appstats to help
profile
time
spent on API calls. I'd recommend setting it up (it works in
production) to see if you can identify where this time is being
spent.

I wrote a short article about Appstats on my blog with some
screenshots showing the sort of data you can get out of it:

http://blog.dantup.com/2010/01/profiling-google-app-engine-with-appstats

Hope this helps.

Danny

On Jan 16, 8:24 pm, mani doraisamy mdorais...@orangescape.com

wrote:

Recently, we have been running into frequent performance
problems,
especially between 7-10pm IST. Requests that used to take
600ms
are
taking almost 4 secs.

- Has anyone faced similar problems recently?
- What is the limit for memcache per account? How do we find
the
cache
expiry pattern? (actual expiry Vs specified expiry)

thanks,
mani

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Re: [google-appengine] Problem using 'www' as subdomain for app url

2010-01-24 Thread Nickolas Daskalou

It might be a problem with Google Sites in Google Apps. Search this group
for similar problems and see the answers related to Google Sites. Not 100%
sure on this but give it a go.

Nick

2010/1/24 Alex alexle...@googlemail.com

Hi,
I have a google appengine app which I want to access via
mydomain.com.
I have succesfully set up the CNAME record and subdomain for access
as mysubdomain.mydomain.com.
However if the subdomain is 'www' it does not work. Have you any idea
what the problem is? When I enter 'www' into 'Add new URL' for my GAE
app it does not appear in the access list of url, nor is there an
error message. Any other subdomain name works fine. I am sure I have
seen documentation somewhere which says 'www' should work.

Any help appreciated
Alex

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Re: [google-appengine] unable to add app to domain

2010-01-30 Thread Nickolas Daskalou

There could be a number of reasons why this isn't working. Eg:

1. When you first created your app did you choose to restrict it to a Google
Apps domain? If so, I think you can only add that Google Apps domain as a
domain for your app. AFAIK, this cannot be changed once an App Engine app
has been created.
2. Is the user you've logged into your Google Apps account with an
administrator for your App Engine app? If not, add them and try again.
3. Is the Google Apps user different to the App Engine user, and you're
accessing from the same browser? If so, try logging into each account from a
separate browser and try again. (this one's from my experience)
4. Are you trying to add a naked domain (a domain with no sub-domain, not
even a www)? This is not possible right now. Although I'm guessing App
Engine would already tell you this if you tried adding it in the Admin
Console.
5. It could have something to do with Google Sites already serving that
domain in your Google Apps. Search this forum for some of the Google Sites
problems and solutions.

Nick

2010/1/31 brian br...@iheardata.com

I am trying to add my own app (created by logging in to appengine with
my
apps-for-domains account) to my own domain. I have tried doing this
by
entering my app-id from the Google Apps Dashboard add more services
page,
as well as from the app's own Versions page with the Add Domain...
button.

In both cases, I am eventually brought to the You have requested
that...
terms and conditions page. I check the box next to I accept and
click the
Activate this service button... and am redirected back to the terms
and
conditions page. I can do this over and over, and am unable to get
past the
terms and conditions page.

help?

/brian

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Re: [google-appengine] Re: unable to add app to domain

2010-01-30 Thread Nickolas Daskalou

Hmmm well I'm out of ideas, sorry. Wait for one of the Googlers to
reply.

Nick

On 31/01/2010, at 2:54 PM, brian br...@iheardata.com wrote:

On Jan 30, 10:22 pm, Nickolas Daskalou n...@daskalou.com wrote:

There could be a number of reasons why this isn't working. Eg:

has been created.

The app is setup to use authentication from regular google accounts.

2. Is the user you've logged into your Google Apps account with an
administrator for your App Engine app? If not, add them and try
again.

Yes. It's the same user.

3. Is the Google Apps user different to the App Engine user, and
you're
accessing from the same browser? If so, try logging into each
account from a

separate browser and try again. (this one's from my experience)

Again, the appengine user and the apps-for-domains user are the same.

4. Are you trying to add a naked domain (a domain with no sub-
domain, not
even a www)? This is not possible right now. Although I'm
guessing App
Engine would already tell you this if you tried adding it in the
Admin

Console.
5. It could have something to do with Google Sites already serving
that
domain in your Google Apps. Search this forum for some of the
Google Sites

problems and solutions.

Read my original message again. I'm not even getting up to the step
where I pick the subdomain.

/brian

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[google-appengine] Memcache: Should we save Model instance or protocol buffer?

Is it better/safer to store a Model instance into Memcache directly (Method
1 below), or should we convert it to a protocol buffer first, then store it
(Method 2 below)?

Method 1:

memcache.set(cache_key, entity)
...
entity = memcache.get(cache_key)


Method 2:

memcache.set(cache_key, db.model_to_protobuf(entity))
...
entity = db.protobuf_to_model(memcache.get(cache_key))


I'm assuming Method 2 results in a smaller Memcache footprint, yes?

Nick

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Re: [google-appengine] Re: Memcache: Should we save Model instance or protocol buffer?

Perfect, thanks Sylvain. :)

Nick

On 5 February 2010 03:11, Sylvain sylvain.viv...@gmail.com wrote:

I think the answer (and more) is here :
http://blog.notdot.net/2009/9/Efficient-model-memcaching

On Feb 4, 10:43 am, Nickolas Daskalou n...@daskalou.com wrote:
Is it better/safer to store a Model instance into Memcache directly
(Method
1 below), or should we convert it to a protocol buffer first, then store
it
(Method 2 below)?

Method 1:

memcache.set(cache_key, entity)
...
entity = memcache.get(cache_key)

Method 2:

memcache.set(cache_key, db.model_to_protobuf(entity))
...
entity = db.protobuf_to_model(memcache.get(cache_key))

I'm assuming Method 2 results in a smaller Memcache footprint, yes?

Nick

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Re: [google-appengine] Re: Memcache: Should we save Model instance or protocol buffer?

Thanks Andy. Do you know what happens to a RefenceProperty that has already
had the referenced entity loaded on the Model instance? Does the
referenced entity also get saved in the ProtocolBuffer, or is only its key
saved?

On 5 February 2010 16:54, Andy Freeman ana...@earthlink.net wrote:

Note that memcaching a protocol buffer has interesting consequences.
One is that the auto-now datetime properties are updated when the
protocol buffer is created. This update is just on the protocol
buffer - it doesn't affect the datastore copy.

http://code.google.com/p/googleappengine/issues/detail?id=2402

On Feb 4, 8:11 am, Sylvain sylvain.viv...@gmail.com wrote:
I think the answer (and more) is here :
http://blog.notdot.net/2009/9/Efficient-model-memcaching

On Feb 4, 10:43 am, Nickolas Daskalou n...@daskalou.com wrote:

Is it better/safer to store a Model instance into Memcache directly
(Method
1 below), or should we convert it to a protocol buffer first, then
store it
(Method 2 below)?

Method 1:

memcache.set(cache_key, entity)
...
entity = memcache.get(cache_key)

Method 2:

memcache.set(cache_key, db.model_to_protobuf(entity))
...
entity = db.protobuf_to_model(memcache.get(cache_key))

I'm assuming Method 2 results in a smaller Memcache footprint, yes?

Nick- Hide quoted text -

- Show quoted text -

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[google-appengine] Re: Watermarking with Image Composite

Hey Google, has this been fixed in the new SDK?


On Jul 31 2009, 1:40 pm, Rodrigo Moraes rodrigo.mor...@gmail.com
wrote:
 On Jun 3, 8:08 pm, Mick wrote:

  Just tested and it worked on appspot. awesome! but is there a
  workaround to get it work correctly on dev?

 Hi Mick.
 I had this same problem today (no transparency in png's when using
 composite()), and got a quick fix. If you want to pach the SDK until
 it is fixed, here's how.

 in google.appengine.api.images.images_stub.py, on lines 114-116,
 you'll find:

       alpha = options.opacity() * 255
       mask = Image.new(L, source.size, alpha)
       canvas.paste(source, (x_offset, y_offset), mask)

 replace it with...

       if source.mode == 'RGBA':
           canvas.paste(source, (x_offset, y_offset), source)
       else:
           alpha = options.opacity() * 255
           mask = Image.new(L, source.size, alpha)
           canvas.paste(source, (x_offset, y_offset), mask)

 that's it.
 -- rodrigo

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Re: [google-appengine] 1.3.1 SDK Prerelease - help us verify

2010-02-07 Thread Nickolas Daskalou

Where did you find the documentation for how to use these two new  
features?



On 08/02/2010, at 12:45 PM, Ross M Karchner rosskarch...@gmail.com  
wrote:


I'm loving cursors and transactional tasks (which may be the  
geekiest sentence I've ever written)-- I hope send_mail is next to  
get transactional treatment.


On Wed, Feb 3, 2010 at 5:03 PM, Ikai Lan i...@google.com wrote:
Hello App Engine Developers,

As part of our ongoing efforts to improve release quality and
transparency, we will start prereleasing SDKs for early testing. We
hope this gives developers a chance to participate in our release
process by trying out new changes and sending feedback. As of this
morning, the prerelease SDK for our next release, 1.3.1, is available
in the familiar download location (note that the filename ends in
'prerelease.zip'):

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

If you're interested, please download and give it a try locally with
your favorite App Engine code. Please note that, as a prerelease, this
SDK is not yet supported and still subject to change. Thus, please
don't take critical dependencies or make substantial changes to
production apps based on this SDK.

Importantly, this prerelease is purely for the SDK and is intended for
local testing and development in dev_appserver. The server-side of App
Engine (our production environment) is not at 1.3.1, so deploying with
this SDK is not yet supported. In the future, we might enable a
complete SDK and server test environment for prereleases.

Please try 1.3.1 for local development and send us your feedback!

Thanks,

App Engine Team


Python
=
- New support for Datastore Query Cursors
- New support for Transactional Task Creation
- Additional file extensions permitted when sending mail  
including .doc and .xls

  http://code.google.com/p/googleappengine/issues/detail?id=494
- New Grab Tail added to Memcache API
- Support for Custom Admin Console pages
- New month and synchronized syntax for Cron configuration
- Application Stats library now included in with SDK
- Bulk Loader supports bulk downloading all kinds simultaneously
- appcfg.py validates SSL certificates for HTTPS connections
- Support for ETags, If-matches, If-not-matches HTTP Headers, as  
well as 304 error codes now available on static files (not available  
on the dev_appserver or Blobstore blobs) http://code.google.com/p/googleappengine/issues/detail?id=575


Java
=
- Datastore Query Cursors
- Transactional Tasks
- Additional file extensions permitted when sending mail  
including .doc and .xsl

  http://code.google.com/p/googleappengine/issues/detail?id=494
- Grab Tail added to Memcache API
- Support for Custom Admin Console pages
- Java Precompilation is now on by default.
- Developers can opt-out of precompilation by setting the flag in  
appengine-web.xml

  precompilation-enabledfalse/precompilation-enabled
- New built-in support for unit testing (see appengine-testing.jar)
  http://code.google.com/p/googleappengine/issues/detail?id=326
- net.sf.jsr107 package included as an alternative to the low-level  
Memcache API

- javax.annotation.Resource/Resources added to the package whitelist
- New month and synchronized syntax for Cron configuration
- URLFetch supports asynchronous requests
- http://code.google.com/p/googleappengine/issues/detail?id=1899
- appcfg.sh uses HTTPS for application deployment
- appcfg.sh adds request_logs --append
- Changes to the order queries without a specified sort order are  
returned. Only queries that use IN will see different results.

- Added support for multiple != filters on the same property
- Improved support for keys-only queries when using IN and != filters
- Support for ETags, If-matches, If-not-matches HTTP Headers, as  
well as 304 error codes now available on static files (not available  
on the dev_appserver or Blobstore blobs)

  http://code.google.com/p/googleappengine/issues/detail?id=575
- Fixed issue where the maximum transform count was enforced for  
composite operations

  http://code.google.com/p/googleappengine/issues/detail?id=1656
- Fixed issue with whitespace on the end of strings in web.xml
  http://code.google.com/p/googleappengine/issues/detail?id=2242
- Fixed Not Found issue when defining error-page in web.xml
  http://code.google.com/p/googleappengine/issues/detail?id=1477
- Fixed issue when defining welcome-file-list in web.xml
  http://code.google.com/p/googleappengine/issues/detail?id=1249
- Fixed issue where cancelling a deployment in progress would  
unintentionally delete packages

  http://code.google.com/p/googleappengine/issues/detail?id=2255
- Fixed issue with QuotaService.getCpuTimeInMegaCycles() returning 0
  http://code.google.com/p/googleappengine/issues/detail?id=2639
- Fixed issue where JSP exceptions will be incorrectly cast causing  
a ClassCastException

  http://code.google.com/p/googleappengine/issues/detail?id=1438

--
Ikai Lan
Developer Programs Engineer, Google App

Re: [google-appengine] 1.3.1 SDK Prerelease - help us verify

2010-02-07 Thread Nickolas Daskalou

Thanks Ross, this is very helpful. :)

Nick


On 8 February 2010 13:13, Ross M Karchner rosskarch...@gmail.com wrote:

 Poking around the code, and trial an error.

 For transactional tasks, just add transactional=True to any tasks you
 create in a transaction-- if the transaction fails, the task won't be
 created.

 For cursors, after doing a fetch() on a Query, .cursor() (on the Query
 itself , not the results) will return a big ugly string that acts as the
 cursor.

 Later (probably in a separate handler), use .with_cursor(the_cursor) to
 modify the query. When you fetch, it will pick up where the previous fetch
 left off.


 Excerpted from my code:

 subscriber_q=Query(subscriptions.models.Subscription,
 keys_only=True).filter('site =', edition.site).filter('newsletter =',
 edition.newsletter).filter('active =', True)
 if request.form.has_key('cursor'):
 subscriber_q=subscriber_q.with_cursor(request.form['cursor'])
 subscribers=subscriber_q.fetch(BATCH_SIZE)

 (it might look a little funny since I'm using YARO for my request object
 http://lukearno.com/projects/yaro/)

 On Sun, Feb 7, 2010 at 8:51 PM, Nickolas Daskalou n...@daskalou.comwrote:

 Where did you find the documentation for how to use these two new
 features?


 On 08/02/2010, at 12:45 PM, Ross M Karchner rosskarch...@gmail.com
 wrote:

 I'm loving cursors and transactional tasks (which may be the geekiest
 sentence I've ever written)-- I hope send_mail is next to get transactional
 treatment.

 On Wed, Feb 3, 2010 at 5:03 PM, Ikai Lan  i...@google.com
 i...@google.com wrote:

 Hello App Engine Developers,

 As part of our ongoing efforts to improve release quality and
 transparency, we will start prereleasing SDKs for early testing. We
 hope this gives developers a chance to participate in our release
 process by trying out new changes and sending feedback. As of this
 morning, the prerelease SDK for our next release, 1.3.1, is available
 in the familiar download location (note that the filename ends in
 'prerelease.zip'):

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

 If you're interested, please download and give it a try locally with
 your favorite App Engine code. Please note that, as a prerelease, this
 SDK is not yet supported and still subject to change. Thus, please
 don't take critical dependencies or make substantial changes to
 production apps based on this SDK.

 Importantly, this prerelease is purely for the SDK and is intended for
 local testing and development in dev_appserver. The server-side of App
 Engine (our production environment) is not at 1.3.1, so deploying with
 this SDK is not yet supported. In the future, we might enable a
 complete SDK and server test environment for prereleases.

 Please try 1.3.1 for local development and send us your feedback!

 Thanks,

 App Engine Team


 Python
 =
 - New support for Datastore Query Cursors
 - New support for Transactional Task Creation
 - Additional file extensions permitted when sending mail including .doc
 and .xls
http://code.google.com/p/googleappengine/issues/detail?id=494
 http://code.google.com/p/googleappengine/issues/detail?id=494
 - New Grab Tail added to Memcache API
 - Support for Custom Admin Console pages
 - New month and synchronized syntax for Cron configuration
 - Application Stats library now included in with SDK
 - Bulk Loader supports bulk downloading all kinds simultaneously
 - appcfg.py validates SSL certificates for HTTPS connections
 - Support for ETags, If-matches, If-not-matches HTTP Headers, as well as
 304 error codes now available on static files (not available on the
 dev_appserver or Blobstore blobs)
 http://code.google.com/p/googleappengine/issues/detail?id=575
 http://code.google.com/p/googleappengine/issues/detail?id=575

 Java
 =
 - Datastore Query Cursors
 - Transactional Tasks
 - Additional file extensions permitted when sending mail including .doc
 and .xsl
http://code.google.com/p/googleappengine/issues/detail?id=494
 http://code.google.com/p/googleappengine/issues/detail?id=494
 - Grab Tail added to Memcache API
 - Support for Custom Admin Console pages
 - Java Precompilation is now on by default.
 - Developers can opt-out of precompilation by setting the flag in
 appengine-web.xml
   precompilation-enabledfalse/precompilation-enabled
 - New built-in support for unit testing (see appengine-testing.jar)
http://code.google.com/p/googleappengine/issues/detail?id=326
 http://code.google.com/p/googleappengine/issues/detail?id=326
 - net.sf.jsr107 package included as an alternative to the low-level
 Memcache API
 - javax.annotation.Resource/Resources added to the package whitelist
 - New month and synchronized syntax for Cron configuration
 - URLFetch supports asynchronous requests
 - http://code.google.com/p/googleappengine/issues/detail?id=1899
 http://code.google.com/p/googleappengine/issues/detail?id=1899

[google-appengine] Application versions code - completely separate or diff'd?

2010-02-07 Thread Nickolas Daskalou

I know we're able to access different versions of our apps using a URL like:

http://VERSION.latest.APPID.appspot.com

My question is: Is the code for each version totally separate from other
versions, or are only the files that have been changed between versions
separated (in which case files that have NOT changed between versions are
served from the same file/cached file for all versions of the app)?

To make it more clear, suppose I have two files in my app (settings.py and
main.py), and two versions, 1 and 2:

settings.py (which is identical for both versions):
...
last_version = None
...

main.py (for app version 1):
...
import settings
if settings.last_version is None:
  settings.last_version = 1
 assert settings.last_version == 1
...

main.py (for app version 2):
...
import settings
if settings.last_version is None:
  settings.last_version = 2
assert settings.last_version == 2
...

If I visit 1.latest.myappid.appspot.com first and then
2.latest.myappid.appspot.com (while the app version 1 is still in the App
Engine cache), will the assert fail because version 1 and 2 are
accessing the same settings.py?

Nick

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Re: [google-appengine] Application versions code - completely separate or diff'd?

2010-02-08 Thread Nickolas Daskalou

Ah, runtime was the word I was looking for. Thanks Nick. :)

Nick (not you, me)

On 8 February 2010 22:38, Nick Johnson (Google) nick.john...@google.comwrote:

Hi Nickolas,

Different versions of your app get completely different runtimes. Changing
a global variable as in your example does not change the file, only the
value in the loaded module.

-Nick Johnson

On Mon, Feb 8, 2010 at 7:34 AM, Nickolas Daskalou n...@daskalou.comwrote:

I know we're able to access different versions of our apps using a URL
like:

http://VERSION.latest.APPID.appspot.com

My question is: Is the code for each version totally separate from other
versions, or are only the files that have been changed between versions
separated (in which case files that have NOT changed between versions are
served from the same file/cached file for all versions of the app)?

To make it more clear, suppose I have two files in my app (settings.py and
main.py), and two versions, 1 and 2:

settings.py (which is identical for both versions):
...
last_version = None
...

main.py (for app version 1):
...
import settings
if settings.last_version is None:
settings.last_version = 1
assert settings.last_version == 1
...

main.py (for app version 2):
...
import settings
if settings.last_version is None:
settings.last_version = 2
assert settings.last_version == 2
...

If I visit 1.latest.myappid.appspot.com first and then
2.latest.myappid.appspot.com (while the app version 1 is still in the
App Engine cache), will the assert fail because version 1 and 2 are
accessing the same settings.py?

Nick

--
Nick Johnson, Developer Programs Engineer, App Engine
Google Ireland Ltd. :: Registered in Dublin, Ireland, Registration Number:
368047

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Re: [google-appengine] Re: 1.3.1 SDK Prerelease - help us verify

2010-02-09 Thread Nickolas Daskalou

Will we be able to construct our own cursors much the same way that we are
able to construct our own Datastore keys (Key.from_path())?

Also along the same lines, will we be able to deconstruct a cursor to get
its components (offset, start_inclusive etc.), as we can now do with keys (
key.name(), key.id(), key.kind() etc.)?

2010/2/9 Nick Johnson (Google) nick.john...@google.com

2010/2/9 Stephen sdea...@gmail.com

I'm asking if it's wise to store it as a query parameter embedded in a
web page.

You're right that it's unwise. Depending on how you construct your query, a
user could potentially modify the cursor they send to you to return results
from any query your datastore is capable of performing, which could result
in you revealing information to the user that they shouldn't know. You
should either store the cursor on the server-side, or encrypt it before
sending it to the client.

I was going to mention something about this in my post, but it slipped my
mind.

-Nick Johnson

On Feb 9, 12:26 am, Ikai L (Google) ika...@google.com wrote:
A cursor serializes to a Base64 encoded String, so you can store it
anywhere
you want to store strings: Memcached, Datastore, etc. You can even pass
it
as an URL parameter to task queues.

2010/2/8 Stephen sdea...@gmail.com

Ah right, Nick's blog does say start_key and not offset. My bad.

Maybe there will be warnings in the upcoming documentation, but my
first instinct was to embed the serialised cursor in the HTML as the
'next' link. But that doesn't look like a good idea as Nick's decoded
query shows what's embedded:

PrimaryScan {
start_key: shell\000TestModel\000foo\000\232bar\000\200
start_inclusive: true
}
keys_only: false

First, you may or may not want to leak this info. Second, could this
be altered on the client to change the query in any way that's
undesirable?

Once you have a cursor, where do you store it so you can use it again?

On Feb 8, 10:17 pm, Ikai L (Google) ika...@google.com wrote:
I got beaten to this answer. No, there is no traversal to get to the
offset.

BigTable has an underlying mechanism for range queries on keys.
Indexes
are
essentially a key comprised of a concatenation of application ID,
entity
type, column, value. When a filter operation is performed, the
datastore
looks for a range matching this criteria, returning the set of keys.
A
cursor also adds the datastore key of the entity so it is possible
to
serialize where to begin the query. This is actually a bit awkward
to
explain without visuals. You can watch Ryan Barrett's talk here:

http://www.youtube.com/watch?v=tx5gdoNpcZM

Hopefully, we'll be able to post an article at some point in the
future
explaining how cursors work.

2010/2/8 Alkis Evlogimenos ('Αλκης Ευλογημένος)
evlogime...@gmail.com

There is no offset. The protocol buffer stores a start_key and a
boolean
denoting if this start key is inclusive or not. The performance of
continuing the fetch from a cursor should be the same as the
performance of
the first entities you got from a query.

On Mon, Feb 8, 2010 at 4:33 PM, Stephen sdea...@gmail.com
wrote:

On Feb 8, 7:06 pm, Ikai L (Google) ika...@google.com wrote:
The official docs are pending, but here's Nick Johnson to the
rescue:

http://blog.notdot.net/2010/02/New-features-in-1-3-1-prerelease-Cursors

What are the performance characteristics of cursors?

The serialised cursor shows that it stores an offset. Does that
mean
that if the offset is one million, one million rows will have to
be
skipped before the next 10 are returned? This will be faster than
doing it in your app, but not as quick as the existing bookmark
techniques which use the primary key index.

Or is the server-side stateful, like a typical SQL implementation
of
cursors? In which case, are there any limits to the number of
active
cursors? Or what if a cursor is resumed some time in the future;
will
it work at all, or work slower?

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Re: [google-appengine] Re: 1.3.1 SDK Prerelease - help us verify

2010-02-09 Thread Nickolas Daskalou

I'd want to do this so that I could include parts of the cursor (such as the
offset) into a URL without including other parts (eg. the model kind and
filters). I could then reconstruct the cursor on the server side based on
what was passed into the URL.

For example, if I was searching for blog comments that contained the word
the (with the default order being the creation time, descending), the URL
might look like this:

myblog.com/comments/?q=the

With model:

class Comment(db.Model):
  
  created_at = db.DateTimeProperty(auto_now_add=True)
  words = db.StringListProperty() # A list of all the words in a comment
(forget about exploding indexes for now)
  ...

The query object for this URL might look something like:


q = Comment.all().filter('words',self.request.get('q')).order('-created_at')


To get to the 1001st comment, it'd be good if the URL looked something like
this:

myblog.com/comments/?q=theskip=1000

instead of:

myblog.com/comments/?q=thecursor=[something ugly]

so that when the request comes in, I can do this:


q = Comment.all().filter('words',self.request.get('q')).order('-created_at')
cursor_template = q.cursor_template()
cursor =
db.Cursor.from_template(cursor_template,offset=int(self.request.get('skip')))

(or something along these lines)

Does that make sense?


On 10 February 2010 01:03, Nick Johnson (Google) nick.john...@google.comwrote:

 Hi Nickolas,

 2010/2/9 Nickolas Daskalou n...@daskalou.com

 Will we be able to construct our own cursors much the same way that we are
 able to construct our own Datastore keys (Key.from_path())?


 No, not practically speaking.



 Also along the same lines, will we be able to deconstruct a cursor to
 get its components (offset, start_inclusive etc.), as we can now do with
 keys (key.name(), key.id(), key.kind() etc.)?


 While you could do this, there's no guarantees that it'll work (or continue
 to work), as you'd be digging into internal implementation details. Why do
 you want to do this?

 -Nick Johnson



 2010/2/9 Nick Johnson (Google) nick.john...@google.com

  2010/2/9 Stephen sdea...@gmail.com


 I'm asking if it's wise to store it as a query parameter embedded in a
 web page.


 You're right that it's unwise. Depending on how you construct your query,
 a user could potentially modify the cursor they send to you to return
 results from any query your datastore is capable of performing, which could
 result in you revealing information to the user that they shouldn't know.
 You should either store the cursor on the server-side, or encrypt it before
 sending it to the client.

 I was going to mention something about this in my post, but it slipped my
 mind.

 -Nick Johnson



 On Feb 9, 12:26 am, Ikai L (Google) ika...@google.com wrote:
  A cursor serializes to a Base64 encoded String, so you can store it
 anywhere
  you want to store strings: Memcached, Datastore, etc. You can even
 pass it
  as an URL parameter to task queues.
 
  2010/2/8 Stephen sdea...@gmail.com
 
 
 
 
 
   Ah right, Nick's blog does say start_key and not offset. My bad.
 
   Maybe there will be warnings in the upcoming documentation, but my
   first instinct was to embed the serialised cursor in the HTML as the
   'next' link. But that doesn't look like a good idea as Nick's
 decoded
   query shows what's embedded:
 
   PrimaryScan {
start_key: shell\000TestModel\000foo\000\232bar\000\200
start_inclusive: true
   }
   keys_only: false
 
   First, you may or may not want to leak this info. Second, could this
   be altered on the client to change the query in any way that's
   undesirable?
 
   Once you have a cursor, where do you store it so you can use it
 again?
 
   On Feb 8, 10:17 pm, Ikai L (Google) ika...@google.com wrote:
I got beaten to this answer. No, there is no traversal to get to
 the
   offset.
 
BigTable has an underlying mechanism for range queries on keys.
 Indexes
   are
essentially a key comprised of a concatenation of application ID,
 entity
type, column, value. When a filter operation is performed, the
 datastore
looks for a range matching this criteria, returning the set of
 keys. A
cursor also adds the datastore key of the entity so it is possible
 to
serialize where to begin the query. This is actually a bit awkward
 to
explain without visuals. You can watch Ryan Barrett's talk here:
 
   http://www.youtube.com/watch?v=tx5gdoNpcZM
 
Hopefully, we'll be able to post an article at some point in the
 future
explaining how cursors work.
 
2010/2/8 Alkis Evlogimenos ('Αλκης Ευλογημένος) 
 evlogime...@gmail.com
 
 There is no offset. The protocol buffer stores a start_key and a
   boolean
 denoting if this start key is inclusive or not. The performance
 of
 continuing the fetch from a cursor should be the same as the
   performance of
 the first entities you got from a query.
 
 On Mon, Feb 8, 2010 at 4:33 PM, Stephen sdea...@gmail.com
 wrote

Re: [google-appengine] Re: 1.3.1 SDK Prerelease - help us verify

2010-02-09 Thread Nickolas Daskalou

Does the production cursor string contain information about the app id,
kind, any filter()s or order()s, and (more importantly) some sort of
numerical value that indicates how many records the next query should
skip? If so, and if we could extract this information (and then use it
again to the reconstruct the cursor), that would make for much cleaner,
safer and intuitive URLs than including the entire cursor string (or some
sort of encrypted/encoded cursor string replacement).


2010/2/10 Nick Johnson (Google) nick.john...@google.com

 Hi Nickolas,

 2010/2/9 Nickolas Daskalou n...@daskalou.com

 I'd want to do this so that I could include parts of the cursor (such as
 the offset) into a URL without including other parts (eg. the model kind and
 filters). I could then reconstruct the cursor on the server side based on
 what was passed into the URL.


 The offset argument you're talking about is specific to the dev_appserver's
 implementation of cursors. In production, offsets are not used, so this
 won't work.

  -Nick Johnson



 For example, if I was searching for blog comments that contained the word
 the (with the default order being the creation time, descending), the URL
 might look like this:

 myblog.com/comments/?q=the

 With model:

 class Comment(db.Model):
   
   created_at = db.DateTimeProperty(auto_now_add=True)
   words = db.StringListProperty() # A list of all the words in a comment
 (forget about exploding indexes for now)
   ...

 The query object for this URL might look something like:

 
 q =
 Comment.all().filter('words',self.request.get('q')).order('-created_at')
 

 To get to the 1001st comment, it'd be good if the URL looked something
 like this:

 myblog.com/comments/?q=theskip=1000

 instead of:

 myblog.com/comments/?q=thecursor=[something ugly]

 so that when the request comes in, I can do this:

 
 q =
 Comment.all().filter('words',self.request.get('q')).order('-created_at')
 cursor_template = q.cursor_template()
 cursor =
 db.Cursor.from_template(cursor_template,offset=int(self.request.get('skip')))
 
 (or something along these lines)

 Does that make sense?



 On 10 February 2010 01:03, Nick Johnson (Google) nick.john...@google.com
  wrote:

 Hi Nickolas,

 2010/2/9 Nickolas Daskalou n...@daskalou.com

 Will we be able to construct our own cursors much the same way that we
 are able to construct our own Datastore keys (Key.from_path())?


 No, not practically speaking.



 Also along the same lines, will we be able to deconstruct a cursor to
 get its components (offset, start_inclusive etc.), as we can now do with
 keys (key.name(), key.id(), key.kind() etc.)?


 While you could do this, there's no guarantees that it'll work (or
 continue to work), as you'd be digging into internal implementation details.
 Why do you want to do this?

 -Nick Johnson



 2010/2/9 Nick Johnson (Google) nick.john...@google.com

  2010/2/9 Stephen sdea...@gmail.com


 I'm asking if it's wise to store it as a query parameter embedded in a
 web page.


 You're right that it's unwise. Depending on how you construct your
 query, a user could potentially modify the cursor they send to you to 
 return
 results from any query your datastore is capable of performing, which 
 could
 result in you revealing information to the user that they shouldn't know.
 You should either store the cursor on the server-side, or encrypt it 
 before
 sending it to the client.

 I was going to mention something about this in my post, but it slipped
 my mind.

 -Nick Johnson



 On Feb 9, 12:26 am, Ikai L (Google) ika...@google.com wrote:
  A cursor serializes to a Base64 encoded String, so you can store it
 anywhere
  you want to store strings: Memcached, Datastore, etc. You can even
 pass it
  as an URL parameter to task queues.
 
  2010/2/8 Stephen sdea...@gmail.com
 
 
 
 
 
   Ah right, Nick's blog does say start_key and not offset. My bad.
 
   Maybe there will be warnings in the upcoming documentation, but my
   first instinct was to embed the serialised cursor in the HTML as
 the
   'next' link. But that doesn't look like a good idea as Nick's
 decoded
   query shows what's embedded:
 
   PrimaryScan {
start_key: shell\000TestModel\000foo\000\232bar\000\200
start_inclusive: true
   }
   keys_only: false
 
   First, you may or may not want to leak this info. Second, could
 this
   be altered on the client to change the query in any way that's
   undesirable?
 
   Once you have a cursor, where do you store it so you can use it
 again?
 
   On Feb 8, 10:17 pm, Ikai L (Google) ika...@google.com wrote:
I got beaten to this answer. No, there is no traversal to get to
 the
   offset.
 
BigTable has an underlying mechanism for range queries on keys.
 Indexes
   are
essentially a key comprised of a concatenation of application
 ID, entity
type, column, value. When a filter operation is performed, the
 datastore
looks for a range matching this criteria, returning the set

[google-appengine] Remote API login problem - keep getting HTTP Error 302 Found

After some Googling, I came across this article from SO:

http://stackoverflow.com/questions/1555469/appengine-remote-api-unable-to-login

It appears as though I fall into the group of users as described by
Nick Johnson in the answer that he gave.

Is the workaround in Nick's answer still the best way around this
issue?

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[google-appengine] Admins Emailed quota not working?

I'm sending emails to email addresses that are admins (aka. Admin
Console Developers) and those emails are using Recipients Emailed
quota instread of Admins Emailed quota. Is this a bug or is my
understanding of the Admins Emailed quota wrong?

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[google-appengine] Re: Admins Emailed quota not working?

My bad, I think I have to use mail.send_mail_to_admins() instead of
mail.send_mail().

Nick


On Feb 11, 4:30 am, Nickolas Daskalou n...@daskalou.com wrote:
 I'm sending emails to email addresses that are admins (aka. Admin
 Console Developers) and those emails are using Recipients Emailed
 quota instread of Admins Emailed quota. Is this a bug or is my
 understanding of the Admins Emailed quota wrong?

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Re: [google-appengine] Re: App Engine SDK 1.3.1 is out!

Yeah, this is a great release. Well done Google dudes and dudettes!


On 11 February 2010 15:32, gops patelgo...@gmail.com wrote:

 Wow!!! with wildcard and cursor , all thing i need is available, yay!!
 ( of course map reduce remains,,,but i sense it coming soon.. )

 On Feb 11, 5:38 am, appengine-s...@google.com appengine-
 s...@google.com wrote:
  For more information on wildcard domain mappings see:
 http://code.google.com/appengine/docs/domain.html
 
  For more information on custom admin console pages see:
  Java:
 http://code.google.com/appengine/docs/java/config/appconfig.html#Admi...
  Python:
 http://code.google.com/appengine/docs/python/config/appconfig.html#Ad...
 
  On Feb 10, 4:30 pm, David W. d...@botanicus.net wrote:
 
 
 
   On Feb 10, 11:45 pm, Koen Bok k...@madebysofa.com wrote:
 
Great update!
 
Where can we find more info about:
 
-CustomAdminConsole pages
 
   Picking through the diffs for 1.3.1, the syntax is:
 
   admin_console:
 pages:
   - url: /some/protected/url/in/your/app
 name: My Stats Page
 
   - url: /some/protected/url/in/your/app2
 name: My Stats Page 2
 
   etc.
 
   The extra pages then appear in the column on the left-hand side of the
   admin panel, under the billing section.
 
- Support for wildcard domain mappings
 
On Feb 11, 12:15 am, Ikai L (Google) ika...@google.com wrote:
 
 Check it out!
 

 http://googleappengine.blogspot.com/2010/02/app-engine-sdk-131-includ...
 
 
 http://googleappengine.blogspot.com/2010/02/app-engine-sdk-131-includ..
 .Here's
 the post:
 
 App Engine SDK 1.3.1, Including Major Improvements to
 Datastore!
 http://googleappengine.blogspot.com/2010/02/app-engine-sdk-131-includ...
 We are excited to announce the release of version 1.3.1 of the App
 Engine
 SDK for both Python and Java. While this release contains plenty of
 new
 features and fixes, we've concentrated on using our very first SDK
 release
 of 2010 to improve the heart of many App Engine applications: the
 Datastore.
 
 Here are the three major improvements that 1.3.1 has in store for
 datastore
 users:
 
- *Datastore Query Cursors* - Cursors allow applications to save
 and
'bookmark' their progress through a query, so that it can be
 resumed later.
This works great in combination with paging URLs, as well as
 processing in
the Task Queue API, but there are many other uses. Watch for an
 upcoming
blog post that explores Cursors in the near future. They're also
 really
handy in the context of the next change...
- *No more 1000 result limit* - That's right: with addition of
 Cursors
and the culmination of many smaller Datastore stability and
 performance
improvements over the last few months, we're now confident
 enough to remove
the maximum result limit altogether. Whether you're doing a
 fetch,
iterating, or using a Cursor, there's no limits on the number of
 results.
- *Reduced error rate with Automatic Datastore Retries* - We've
 heard a
lot of feedback that you don't want to deal with the Datastore's
 sporadic
errors. In response, App Engine now automatically retries all
 datastore
calls (with the exception of transaction commits) when your
 applications
encounters a datastore error caused by being unable to reach
 Bigtable.
Datastore retries automatically builds in what many of you have
 been doing
in your code already, and our tests have shown it drastically
 reduces the
number of errors your application experiences (by up to *3-4x
 error
reduction for puts, 10-30x for gets*).
 
 But even with our focus on the Datastore, we were able to sneak in
 a quite a
 number of other new goodies into 1.3.1 as well:
 
 For Python, we've included the *AppStats* RPC instrumentation
 library.
 AppStats lets users easily profile the performance of calls from
 their app
 to the App Engine backend services to identify and isolate issues
 such as
 ineffective caching, bottlenecks, and redundant RPC calls in their
 app. (A
 Java version is in beta testing now.)
 
 And for Java, we've included a comprehensive new *unit-testing
 framework* for
 your App Engine apps. The unit-testing framework enables you to
 test your
 application code in a natural, fully supported manner, and also
 allows you
 to integrate your App Engine apps into other existing testing and
 automation
 frameworks.
 
 The list of changes in 1.3.1 goes on and on (CustomAdminConsole
 pages!
 Support for wildcard domain mappings! Java precompilation on by
 default for
 all applications!), so make sure to
 downloadhttp://code.google.com/appengine/downloads.html the
 new version and read our release notes for the complete list
 (Python
 http://code.google.com/p/googleappengine/wiki/SdkReleaseNotes
 ,

Re: [google-appengine] App Engine not listing my apps

If you're logged in using a Google Apps account, visit:

https://appengine.google.com/a/your Google Apps domain

Nick


On 11 February 2010 16:02, Hendy Irawan he...@soluvas.com wrote:

 When I go to https://appengine.google.com/ I always get redirected to
 https://appengine.google.com/start and prompted to create a new
 application.

 I can create new applications and deploy to an app ID I already
 created (from my own memory). However I cannot list/manage existing
 apps.

 Thank you.

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Re: [google-appengine] Re: App Engine SDK 1.3.1 is out!

Wow, that's huge. Was that a batch get/put (and if so, how many entities?),
or just for one single entity?


On 11 February 2010 21:19, Brandon Thomson gra...@gmail.com wrote:


  though I am curious if we can predict how long .get()
  and .fetch() will potentially block for? Seems like this used to be
  around 4 seconds in the event of Timeout but I assume it may be longer
  now.

 In case anyone is curious, I have logged a .get() that blocked for 21
 seconds and a .put() that blocked for 20.5 seconds. So the latency can
 be much higher now.

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Re: [google-appengine] Remote API login problem - keep getting HTTP Error 302 Found

Thanks Nick.

On 12 February 2010 02:43, Nick Johnson (Google) nick.john...@google.comwrote:

Hi Nickolas,

Yes, that workaround is still accurate.

-Nick Johnson

On Wed, Feb 10, 2010 at 5:02 PM, Nickolas Daskalou n...@daskalou.comwrote:

After some Googling, I came across this article from SO:

http://stackoverflow.com/questions/1555469/appengine-remote-api-unable-to-login

It appears as though I fall into the group of users as described by
Nick Johnson in the answer that he gave.

Is the workaround in Nick's answer still the best way around this
issue?

--
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Google Ireland Ltd. :: Registered in Dublin, Ireland, Registration Number:
368047

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Re: [google-appengine] Re: Why i don't use Google App Engine... and don't recomend it to you

Yeah that's one bad thing about developing on App Engine - at times, waiting
days for support.

On 12 February 2010 15:15, Dennis Peterson dennisbpeter...@gmail.comwrote:

It's not google's fault, but on the other hand, deploy at Rackspace and you
can call them on the phone and sort things out.

On Thu, Feb 11, 2010 at 10:19 PM, Tim Hoffman zutes...@gmail.com wrote:

I access appengine from multiple systems' (access to app engineis not
tied to a O/S install)
Looks like you haven't kept track of you gmail accounts.

Hardly googles or appengines fault.

On Feb 12, 3:22 am, ai_...@live.ru ai_...@live.ru wrote:
Well it's a short story. I register an account on App Engine. I made a
2-3 sites. Everithing was fine and i was happy :)

But one time i reinstall my operating system (you know what system
nead to be reainstalled :) ) i get strange error. I coldn't loggin to
my account. I search for reasons, make post in tech support but i get
nothing. NO ONE from tech support have contact with me. NO ONE!!!

But one day i read some smart artice and i finally loged in. But then
i faced with other bug. When i try to create new site, i get this
message You have no right to work wot this site. After that i didn't
see site in my sites list and lose it. So i couldn control him and
even edit...

I spend 6 months at Google App Engine to get nothing.

So... GOOGLE APP ENGINE IS VERRY BAD SERVISE... DON'T USE IT... SAVE
YOUR TIME..

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Re: [google-appengine] downloading a swf

2010-02-13 Thread Nickolas Daskalou

Read Nick Johnson's comments in this thread for an official answer:

http://groups.google.com/group/google-appengine/browse_thread/thread/c35f347308e76943

Spoiler: Upload and download time does not count towards the 30 second
limit.

Nick

On 14 February 2010 10:00, Robert Kluin robert.kl...@gmail.com wrote:

I think the consensus is that time to download the response, or static
files, does not count against your 30 second limit.

Robert

On Sat, Feb 13, 2010 at 12:35 PM, Olga Pomez dam...@gmail.com wrote:
Hello if i have an swf that last in download more than 30 seconds on my
server, GAE is not going to be usefull for me , is not it?
Thanks very much

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[google-appengine] Memcache: key_prefix vs namespace?

2010-02-15 Thread Nickolas Daskalou

What's the difference between key_prefix and namespace when using the
Memcache.*_multi() functions?

Maybe my understanding of namespace is wrong, but I thought namespace was
basically a (string) prefix on the cache key.

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Re: [google-appengine] Memcache: key_prefix vs namespace?

On 17 February 2010 14:14, Ikai L (Google) ika...@google.com wrote:

 The implementation isn't going to change if it works


Is there a list of what's currently working (and hence won't change), and
what's not working (and hence may change in the future)?

Also, is the namespace simply a string (without restrictions)?

Nick



 - it's just that certain methods involving namespaces return unexpected
 results. For instance, grab_tail seems to be working incorrectly, pulling
 from the global LRU rather than the nested namespace LRU.


 On Tue, Feb 16, 2010 at 7:01 PM, Nickolas Daskalou n...@daskalou.comwrote:

 Thanks for that explanation Ikai.

 Since the details are still being worked out, should we not use the
 namespace argument, in case its implementation suddenly changes?

 If it is indeed safe to use now (and the namespace argument actually does
 work and is not just there as a placeholder), what is the data type? A
 string?



 On 17 February 2010 08:57, Ikai L (Google) ika...@google.com wrote:

 Nickolas, I thought the same thing when I first read about namespaces. As
 it turns out, namespaces with App Engine's memcache instance are not the
 same thing as prefixes. They are actual namespaces with their own LRU in
 addition to the global LRU. The details are still being worked out, though,
 but the idea is that you'll have features like constant time flushing of a
 namespace and nested namespaces, something you can't do with the
 distribution of Memcached that is available on the internet. This version of
 Memcache was necessary to ensure that users could not stomp on other users'
 memcache data.

 On Mon, Feb 15, 2010 at 8:11 PM, Nickolas Daskalou n...@daskalou.comwrote:

  What's the difference between key_prefix and namespace when using the
 Memcache.*_multi() functions?

 Maybe my understanding of namespace is wrong, but I thought namespace
 was basically a (string) prefix on the cache key.

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 http://googleappengine.blogspot.com | http://twitter.com/app_engine

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[google-appengine] Re: Watermarking with Image Composite

*BUMP*


On Feb 5, 6:04 pm, Nickolas Daskalou n...@daskalou.com wrote:
 Hey Google, has this been fixed in the new SDK?

 On Jul 31 2009, 1:40 pm, Rodrigo Moraes rodrigo.mor...@gmail.com
 wrote:

  On Jun 3, 8:08 pm, Mick wrote:

   Just tested and it worked on appspot. awesome! but is there a
   workaround to get it work correctly on dev?

  Hi Mick.
  I had this same problem today (no transparency in png's when using
  composite()), and got a quick fix. If you want to pach the SDK until
  it is fixed, here's how.

  in google.appengine.api.images.images_stub.py, on lines 114-116,
  you'll find:

       alpha= options.opacity() * 255
        mask = Image.new(L, source.size,alpha)
        canvas.paste(source, (x_offset, y_offset), mask)

  replace it with...

        if source.mode == 'RGBA':
            canvas.paste(source, (x_offset, y_offset), source)
        else:
           alpha= options.opacity() * 255
            mask = Image.new(L, source.size,alpha)
            canvas.paste(source, (x_offset, y_offset), mask)

  that's it.
  -- rodrigo



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Re: [google-appengine] Re: Watermarking with Image Composite

Answer: No. However, Rodrigo's fix still works with SDK 1.3.1.


On 17 February 2010 14:27, Nickolas Daskalou n...@daskalou.com wrote:

 *BUMP*


 On Feb 5, 6:04 pm, Nickolas Daskalou n...@daskalou.com wrote:
  Hey Google, has this been fixed in the new SDK?
 
  On Jul 31 2009, 1:40 pm, Rodrigo Moraes rodrigo.mor...@gmail.com
  wrote:
 
   On Jun 3, 8:08 pm, Mick wrote:
 
Just tested and it worked on appspot. awesome! but is there a
workaround to get it work correctly on dev?
 
   Hi Mick.
   I had this same problem today (no transparency in png's when using
   composite()), and got a quick fix. If you want to pach the SDK until
   it is fixed, here's how.
 
   in google.appengine.api.images.images_stub.py, on lines 114-116,
   you'll find:
 
alpha= options.opacity() * 255
 mask = Image.new(L, source.size,alpha)
 canvas.paste(source, (x_offset, y_offset), mask)
 
   replace it with...
 
 if source.mode == 'RGBA':
 canvas.paste(source, (x_offset, y_offset), source)
 else:
alpha= options.opacity() * 255
 mask = Image.new(L, source.size,alpha)
 canvas.paste(source, (x_offset, y_offset), mask)
 
   that's it.
   -- rodrigo
 
 

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Re: [google-appengine] Memcache: key_prefix vs namespace?

I think I'll follow suit and also stick with prefixing memcache keys with my
own namespaces until there's more info on the real namespaces.


On 17 February 2010 14:53, Eli Jones eli.jo...@gmail.com wrote:

 Nickolas,

 If you poke around in the google/appengine/api/memcache folder and look at
 the __init__.py file, you see in the comments that namespace is just a
 string.

 Sometimes poking around in the .py files can clarify some things.. though,
 it won't tell you if something will change of course.

 Since I'm not clear on what namespace ultimately does, I just stick to
 setting memcache keynames = Model.kind() + Model.key().name() since that
 should be unique for each application.


 On Tue, Feb 16, 2010 at 10:22 PM, Nickolas Daskalou n...@daskalou.comwrote:


 On 17 February 2010 14:14, Ikai L (Google) ika...@google.com wrote:

 The implementation isn't going to change if it works


 Is there a list of what's currently working (and hence won't change), and
 what's not working (and hence may change in the future)?

 Also, is the namespace simply a string (without restrictions)?

 Nick



 - it's just that certain methods involving namespaces return unexpected
 results. For instance, grab_tail seems to be working incorrectly, pulling
 from the global LRU rather than the nested namespace LRU.


 On Tue, Feb 16, 2010 at 7:01 PM, Nickolas Daskalou n...@daskalou.comwrote:

 Thanks for that explanation Ikai.

 Since the details are still being worked out, should we not use the
 namespace argument, in case its implementation suddenly changes?

 If it is indeed safe to use now (and the namespace argument actually
 does work and is not just there as a placeholder), what is the data type?
 A string?



 On 17 February 2010 08:57, Ikai L (Google) ika...@google.com wrote:

 Nickolas, I thought the same thing when I first read about namespaces.
 As it turns out, namespaces with App Engine's memcache instance are not 
 the
 same thing as prefixes. They are actual namespaces with their own LRU in
 addition to the global LRU. The details are still being worked out, 
 though,
 but the idea is that you'll have features like constant time flushing of a
 namespace and nested namespaces, something you can't do with the
 distribution of Memcached that is available on the internet. This version 
 of
 Memcache was necessary to ensure that users could not stomp on other 
 users'
 memcache data.

 On Mon, Feb 15, 2010 at 8:11 PM, Nickolas Daskalou 
 n...@daskalou.comwrote:

  What's the difference between key_prefix and namespace when using the
 Memcache.*_multi() functions?

 Maybe my understanding of namespace is wrong, but I thought namespace
 was basically a (string) prefix on the cache key.

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Re: [google-appengine] Re: Why i don't use Google App Engine... and don't recomend it to you

Maybe Google did it on purpose because you're using IE + Bing instead of
Chrome + Google? :P

No seriously, hopefully this screenshot will make it easier for the Googlers
that frequent this group to help you.

I have a question for you though (not sure if it's been asked in this thread
yet (yes, can't be bothered reading it all)).

What email address did you use when you visited
https://appengine.google.com/ and it asked you to sign in? Or rather, does
the email address you used to access that appengine.google.com page end in
@gmail.com or @anotherdomain.com? If it's the latter, have you tried
visiting https://appengine.google.com/a/anotherdomain.com?

On 18 February 2010 03:14, ai_...@live.ru ai_...@live.ru wrote:

I think i have Google acc, but i don't know for shure.

When i go to https://appengine.google.com/ and Sign in, then i see a
list of ONE site (all other disapear!) and i can create only 2 more
sites!!!

Here is the proof link
http://oleksii.icr-corp.com/gae.png

When i try to create new site. I'm sucsessfully create it. But in the
very end i get error message You have no right to edit site (or
something like that). And then created site become invivible!! And i
can't edit it and modify. I even dont see it in sites list

When i was tring to modify sites that was created long ago i have same
error message and then site become invisible! And after that i don't
see site in site list.

On 16 фев, 21:56, johnwlockwood johnwlockw...@gmail.com wrote:
On Feb 15, 9:36 pm, ai_...@live.ru ai_...@live.ru wrote:

Well i like GAE, but this situation is pissing me off. And you even
want someone to pay money for THAT? o_O

I just want to use servise. I don't want you to suggest somethin. I
want you to help me.

Is it really hard for Google to help people to use they servises?

And please READ THIS ONE MORE TIME.. i think i make it clear that i
don't forget passowrd. And i clearly say what error i have.

But one day i read some smart artice and i finally loged in. But
then
i faced with other bug. When i try to create new site, i get this
message You have no right to work with this site. After that i

You must be leaving out some steps here.
let's start from the top:
What kind of account do you have? a Google Account or a Google App
Account?

for a Google Account:
You would go tohttps://appengine.google.com/and Sign in.
This would bring you to My Applications, which has a list of any
applications that belong to this account.
Are there any listed there? is so when you click on one. what happens?
if not, click 'Create an Application'
this should bring you to the 'Create an Application' page.
Here you find an available Application Identifier and enter the
Application Title.
Do that, then click the 'Save' button.
What response do you get?

didn't
see site in my sites list and lose it. So i couldn control him and
even edit...

On 14 ÆÅ×, 15:57, Danny Tuppeny da...@tuppeny.com wrote:

We understand you. We don't understand why you don't respond to
people
trying to help you.

Eg. you posted here:

http://groups.google.com/group/google-appengine/browse_thread/thread/...

And Wooble made a suggestion (assuming your account was an Apps
account), but you never replied.

We can't help you if you just complain and then disappear.

If you have a problem, try explaining it in more detail. Why can't
you
login? Do you get an error? Did you forget your password? Have you
lost your source code?

2010/2/13 ai_...@live.ru ai_...@live.ru:

Well i think NOBODY anderstend me...

I WASTE 6 MONTHS for Google App Engine and right now i get nothing.
I
could not use my sites. I could no edit them. And technical support
DOSENT WORK AT ALL I don't care how Google App Engine is good.
I
CAN'T USE IT!!!

So... imagine for a second that you create something huge like
Facebook. And one day. You lost control for your apps. Lost your
time
and money!!

Right now i talking that EVERIONE can face with my situation.

So... save your time. Use other stable cloud services.- óËÒÙÔØ
ÃÉÔÉÒÕÅÍÙÊ ÔÅËÓÔ -

- ðÏËÁÚÁÔØ ÃÉÔÉÒÕÅÍÙÊ ÔÅËÓÔ -- Скрыть цитируемый текст -

- Показать цитируемый текст -

Re: [google-appengine] Re: Scheduled Maintenance?

My crons aren't running yet.

On 18 February 2010 13:56, naan kaz...@gmail.com wrote:

cron job starts working now.

On Feb 17, 6:49 pm, naan kaz...@gmail.com wrote:
It seems cron job isn't working after the maintenance. Is this known
issue?

On Feb 17, 6:41 pm, Greg g.fawc...@gmail.com wrote:

On Feb 18, 3:22 pm, jay kyburz@gmail.com wrote:

Is there somewhere other than this list we should be subscribed to to
be informed about these ahead of time? This one caught me by
surprise.

Yes - you can subscribe tohttp://
groups.google.com/group/google-appengine-downtime-notify.
This sends you several emails leading up to the maintenance period.

On another note, is Google hoping to phase out these maintenance
outages eventually? I manage my customer's expectations, but I'm
getting increasing kick-back as my application gains in popularity.

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Re: [google-appengine] Re: Scheduled Maintenance?

Refreshing my Logs page in the Admin Console just gave me:

 Server Error

A server error has occurred.

Return to Applications screen » https://appengine.google.com/


On 18 February 2010 14:22, mb doit...@gmail.com wrote:

 Also, XMPP isn't working for my app.  It's worked fine the last 3
 weeks, now after maintenance it's broken.  No changes made to the app
 in 3 weeks.

 On Feb 17, 7:14 pm, vivpuri v...@vivekpuri.com wrote:
  My crons are not running either

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Re: [google-appengine] Re: Scheduled Maintenance?

On next refresh, the Logs page is now working. Crons are still not, however.


On 18 February 2010 14:24, Nickolas Daskalou n...@daskalou.com wrote:

 Refreshing my Logs page in the Admin Console just gave me:

  Server Error

 A server error has occurred.

 Return to Applications screen » https://appengine.google.com/


 On 18 February 2010 14:22, mb doit...@gmail.com wrote:

 Also, XMPP isn't working for my app.  It's worked fine the last 3
 weeks, now after maintenance it's broken.  No changes made to the app
 in 3 weeks.

 On Feb 17, 7:14 pm, vivpuri v...@vivekpuri.com wrote:
  My crons are not running either

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Re: [google-appengine] Re: Scheduled Maintenance?

My crons have now been MIA for a full two hours.

Will this cron backlog problem occur each time there is maintenance? If so,
how long can we expect the Cron executer to take catch up?

On 18 February 2010 14:34, App Engine Team appengine.nore...@gmail.comwrote:

The Deploy problem is a known issue resulting from today's schedule
maintenance. We're currently working on a fix, but there is a work
around that should work for most developers:

1. Deploy your application as a new version. Please do not constantly
attempt to redeploy your app. Your app is already in the queue even if
the deploy script times out.
2. Validate that the new version is active using the version.latest
URL
3. Use the Admin Console to switch the active or default application
to this version

As for Cron jobs, the Cron executor is catching up from a backlog
during the outage. Your jobs are not getting dropped, just slow.

On Feb 17, 7:28 pm, Eli Jones eli.jo...@gmail.com wrote:
I'm hesitant to try a redeploy of my app right now to see if that works..
but I will not that I am getting the Error: Server Error The server
encountered an error and could not complete your request when trying to
go
to Datastore Statistics page.

I try refresh and same error.

Also, I noticed that this morning.. and as far as I know up to now.. my
stats have not updated. So, it has been about 40 hours since the last
Statistics update for my app.

On Wed, Feb 17, 2010 at 10:22 PM, mb doit...@gmail.com wrote:
Also, XMPP isn't working for my app. It's worked fine the last 3
weeks, now after maintenance it's broken. No changes made to the app
in 3 weeks.

On Feb 17, 7:14 pm, vivpuri v...@vivekpuri.com wrote:
My crons are not running either

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Re: [google-appengine] Re: Scheduled Maintenance?

After 3 hours and 55 minutes, my crons started running again.

On 18 February 2010 16:17, Nickolas Daskalou n...@daskalou.com wrote:

Update: 3.5 hours on and still no crons executed.

On 18 February 2010 14:46, Nickolas Daskalou n...@daskalou.com wrote:

My crons have now been MIA for a full two hours.

Will this cron backlog problem occur each time there is maintenance? If
so, how long can we expect the Cron executer to take catch up?

On 18 February 2010 14:34, App Engine Team
appengine.nore...@gmail.comwrote:

The Deploy problem is a known issue resulting from today's schedule
maintenance. We're currently working on a fix, but there is a work
around that should work for most developers:

As for Cron jobs, the Cron executor is catching up from a backlog
during the outage. Your jobs are not getting dropped, just slow.

On Feb 17, 7:28 pm, Eli Jones eli.jo...@gmail.com wrote:
I'm hesitant to try a redeploy of my app right now to see if that
works..
but I will not that I am getting the Error: Server Error The server
encountered an error and could not complete your request when trying
to go
to Datastore Statistics page.

I try refresh and same error.

Also, I noticed that this morning.. and as far as I know up to now.. my
stats have not updated. So, it has been about 40 hours since the last
Statistics update for my app.

On Feb 17, 7:14 pm, vivpuri v...@vivekpuri.com wrote:
My crons are not running either

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[google-appengine] My app is much faster now

The maintenance on the servers has sped up my app's execution times (and CPU
times) by about 5x-10x.

Is this because:

1. My app's runtime is kept in memory longer now but it will soon go back to
normal?
2. My app's runtime is kept in memory longer now and this will be typical
from now on?
3. The servers were upgraded during the maintenance to make them faster/more
efficient, and the performance I'm now seeing will be typical from now on?
4. [insert reason]?

I really hope it's 2 or 3!

Nick

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Re: [google-appengine] Re: My app is much faster now

I'm getting these times from the Logs page.

Can someone from Google comment on why this could be happening?

On 19 February 2010 08:10, jay kyburz@gmail.com wrote:

Are you using the dashboard to see this improvement in speed. I wonder
it its reporting CPU usage incorrectly as well.

On Feb 18, 7:50 pm, Nickolas Daskalou n...@daskalou.com wrote:
The maintenance on the servers has sped up my app's execution times (and
CPU
times) by about 5x-10x.

Is this because:

1. My app's runtime is kept in memory longer now but it will soon go back
to
normal?
2. My app's runtime is kept in memory longer now and this will be typical
from now on?
3. The servers were upgraded during the maintenance to make them
faster/more
efficient, and the performance I'm now seeing will be typical from now
on?
4. [insert reason]?

I really hope it's 2 or 3!

Nick

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[google-appengine] How to get a Model's collection_names?

Say I have these Models:

class Model1(db.Model):
  

class Model2(db.Model):
  model1 = db.ReferenceProperty(Model1, collection_name = 'model2s')
  

class Model3(db.Model):
  model1 = db.ReferenceProperty(Model1, collection_name = 'model3s')
  

Would this be the best way to get all of Model1's collection_names?

collection_names = [name for name in dir(Model1) if
isinstance(getattr(Model1,name), db.Query)]

Is there a better way?

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[google-appengine] Admin Console: Logs and Requests not showing up