date:20081107

Hi,

Does this work if you add the mime_type argument explicitly to the handle?

- url: /silverlight
  static_dir: silverlight
  mime_type: *applicaition/x-silverlight-app

-Marzia
*
On Fri, Nov 7, 2008 at 4:41 AM, Neo42 [EMAIL PROTECTED] wrote:


 How do I use the upload tool (appcfg.py) and my app.yaml file to
 upload .XAML (silverlight) files?


 Here are the handlers in my yaml:
 handlers:
 - url: /stylesheets
  static_dir: stylesheets

 - url: /silverlight
  static_dir: silverlight

 - url: /.*
  script: helloworld.py



 My xaml and such is in the silverlight directory.  My appcfg.py
 command is:
 appcfg.py  update  C:\GoogleAppsProjects\HelloWorld


 When I try to do it I get this:
 Could not guess mimetype for silverlight/scene.xaml.  Using
 application/octet-stream.



 And the uploaded xaml file doesn't work.  By the way, the localhost
 version of the app runs fine.  It's the upload tool that is screwing
 something up.


 I can't figure out how to do it from this page:

 http://code.google.com/appengine/docs/configuringanapp.html#Static_File_Handlers



 I'm new to python.  Please help.  I suppose I could try to put my xaml
 code in the html code, but I'd prefer not to.

 Thanks.

 


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[google-appengine] Re: Google Developers Day - Java App Engine. Time line? Hype?

2008-11-07 Thread Raffaele Castagno




On 22 Ott, 16:47, Andrew Badera [EMAIL PROTECTED] wrote:
 Probably right after Microsoft makes a major cloud announcement.

So you mean _right now_?

http://www.microsoft.com/azure/windowsazure.mspx

^_^

Raffaele
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[google-appengine] Re: Web Service authentication in App engine

2008-11-07 Thread Dado


Take a look at 
http://code.google.com/apis/accounts/docs/AuthForInstalledApps.html#ClientLogin

I believe that the service code for appengine is ah.

Dado

On Nov 6, 9:23 am, OI2engine [EMAIL PROTECTED] wrote:
 Hi,

  I am developing an iphone app which is supposed to talk to a web
 service hosted on app engine.How can i expose a web service which uses
 google authentication.

 thanks
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[google-appengine] Re: indexes for and queries

2008-11-07 Thread Jeff S


Hi bernd,

You are correct, matching on two members of a list (which is how
Searchable works) requires the list property to be listed twice in the
index. One thing to watch out for, is that there is currently a limit
of 5000 index rows per entity (index row counts are described here:
http://code.google.com/appengine/docs/datastore/queriesandindexes.html#Big_Entities_and_Exploding_Indexes
) so if you have the same list property mutiple times in your index
your indexes may begin to explode.

Happy coding,

Jeff

On Nov 6, 2:30 am, dobee [EMAIL PROTECTED] wrote:
 if i do this to find any entities that match house and dog i do

 Searchable.all().filter('content_type =', 'something').filter('words
 =', 'house').filter('words =', 'dog'). order('c_time')

 is it right that i need an index for every number of words? so if i
 want to support searches for cats dogs pets i need an additional
 index?

 get_data failed no matching index found.
 This query needs this index:
 - kind: Searchable
   properties:
   - name: content_type
   - name: words
   - name: words
   - name: c_time
     direction: desc

 thx, in advance, bernd
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[google-appengine] Re: No such file or directory

2008-11-07 Thread Jeff S


Hi Chris,

Thank you for tracking that down. Would you mind filing a Review
request in our SDK issue tracker with your patch:
http://code.google.com/p/googleappengine/issues/list Before we can
accept your patch, you'll need to sign a Contributor License Agreement
(CLA).

Individual CLA: http://code.google.com/legal/individual-cla-v1.0.html
Corporate CLA: http://code.google.com/legal/corporate-cla-v1.0.html

Thanks again,

Jeff

On Nov 6, 10:23 pm, Chris [EMAIL PROTECTED] wrote:
 This seems to be a bug in app engine, with the way datastore_path is
 interpreted. Specifically, some code treats datastore_path as relative
 while other code treats it as absolute.

 I think this can be fixed by changing line 207 in /google/appengine/
 tools/dev_appserver_main.py from:

       option_dict[ARG_DATASTORE_PATH] = value

 to:
       option_dict[ARG_DATASTORE_PATH] = os.path.abspath(value)

 Chris

 On Nov 7, 12:45 am, Chris [EMAIL PROTECTED] wrote:



  I'm saving my local datastore to the same folder as my application
  code (instead of the default /tmp since this is periodically deleted).
  When I try to use the .put() method on a model object, I keep getting
  this error:

  Traceback (most recent call last):
    File /home/chris/google_appengine/google/appengine/ext/webapp/
  __init__.py, line 501, in __call__
      handler.post(*groups)
    File /home/chris/myapp/views.py, line 102, in post
      entity.put()
    File /home/chris/google_appengine/google/appengine/ext/db/
  __init__.py, line 618, in put
      return datastore.Put(self._entity)
    File /home/chris/google_appengine/google/appengine/api/
  datastore.py, line 160, in Put
      apiproxy_stub_map.MakeSyncCall('datastore_v3', 'Put', req, resp)
    File /home/chris/google_appengine/google/appengine/api/
  apiproxy_stub_map.py, line 46, in MakeSyncCall
      stub.MakeSyncCall(service, call, request, response)
    File /home/chris/google_appengine/google/appengine/api/
  datastore_file_stub.py, line 305, in MakeSyncCall
      (getattr(self, _Dynamic_ + call))(request, response)
    File /home/chris/google_appengine/google/appengine/api/
  datastore_file_stub.py, line 353, in _Dynamic_Put
      self.__WriteDatastore()
    File /home/chris/google_appengine/google/appengine/api/
  datastore_file_stub.py, line 239, in __WriteDatastore
      self.__WritePickled(encoded, self.__datastore_file)
    File /home/chris/google_appengine/google/appengine/api/
  datastore_file_stub.py, line 291, in __WritePickled
      os.rename(tmpfile.name, filename)
  OSError: [Errno 2] No such file or directory

  Why is this happening and how do I fix it? This doesn't happen when I
  keep the datastore in /tmp, but then the datastore periodically gets
  deleted...since it's in /tmp.
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[google-appengine] Re: Google Developers Day - Java App Engine. Time line? Hype?

2008-11-07 Thread Raffaele Castagno


On 7 Nov, 14:14, Andrew Badera [EMAIL PROTECTED] wrote:
 No, I think I mean last week, when Azure was announced at PDC, when it was
 still October.

Let's hope this one week ago will came soon :)

Raffaele
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[google-appengine] Google App Engine setup sequence...

2008-11-07 Thread Jesse Grosjean


I have an app hosted on google app engine at
hogbaysoftware.appspot.com. I also have my domain hogbaysoftware.com
setup with google apps. I'd like to connect the two so that I can
access my app engine application at www.hogbaysoftware.com. A few
months ago I set the same system up for another domain of mine
(taskpaper.com), and it's working great.

But it doesn't seem to be working, or at least I'm not getting any
feedback when I try to set it up for my hogbaysoftware.com domain.
I've tried setting things up from both ends (the app engine console)
and also from the google apps dashboard. But in both cases nothing
seems to happen after I go through the setup process. For example from
the google apps dashboard I:

1. Click add more services
2. Enter my app id hogbaysoftware for the Google App Engine service.
3. Click the Add it now button.
4. Accept the agreement, type www for the web address.
5. Click Continue to setup url
6. Add a CNAME pair of www  ghs.google.com in my DNS records
7. Click the i've completed these steps button.

I don't get any errors, but after pressing that button I'm just sent
back to the google apps dashboard without any confirmation message.
The google app engine service isn't listed in my dashboard of
services. And if I go to my google app engine console, and look at the
versions view there's also no indication that any domains are being
setup.

What should I do next. I've just changed all my DNS records, and I'm
worried that my site will go dead when people find my DNS pointing to
ghs.google.com, but with nothing setup on the google side.

Thanks for any ideas on what to do next.

Jesse
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[google-appengine] Re: appcfg.py .xaml files (silverlight) mimtype issue

2008-11-07 Thread Neo42


I got it to work by:

1) Modifying my appcfg.py code.  Added a mimetype.  Details below.
2) check my html and file names for case (the online google app engine
is case sensitive)

File: C:\google_appengine\google\appengine\tools\appcfg.py
Towards the bottom in function main needs to run this line (i made
it the first line):
mimetypes.add_type(application/xaml, .xaml)

Thanks!



On Nov 7, 7:41 am, Neo42 [EMAIL PROTECTED] wrote:
 How do I use the upload tool (appcfg.py) and my app.yaml file to
 upload .XAML (silverlight) files?

 Here are the handlers in my yaml:
 handlers:
 - url: /stylesheets
   static_dir: stylesheets

 - url: /silverlight
   static_dir: silverlight

 - url: /.*
   script: helloworld.py

 My xaml and such is in the silverlight directory.  My appcfg.py
 command is:
 appcfg.py  update  C:\GoogleAppsProjects\HelloWorld

 When I try to do it I get this:
 Could not guess mimetype for silverlight/scene.xaml.  Using
 application/octet-stream.

 And the uploaded xaml file doesn't work.  By the way, the localhost
 version of the app runs fine.  It's the upload tool that is screwing
 something up.

 I can't figure out how to do it from this 
 page:http://code.google.com/appengine/docs/configuringanapp.html#Static_Fi...

 I'm new to python.  Please help.  I suppose I could try to put my xaml
 code in the html code, but I'd prefer not to.

 Thanks.
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[google-appengine] Re: Google App Engine setup sequence...

Hi Jesse,

Hitting the www address, it seems as though the 'www' mapping is still
assigned to sites, even though this isn't obvious in the App's cPanel.

I wrote up a quick page on how to disable the 'www' mapping in sites so you
can enable it with App Engine:
http://groups.google.com/group/google-appengine/web/deleting-existing-www-mapping-from-google-apps

-Marzia

On Fri, Nov 7, 2008 at 10:51 AM, Jesse Grosjean [EMAIL PROTECTED]wrote:

I have an app hosted on google app engine at
hogbaysoftware.appspot.com. I also have my domain hogbaysoftware.com
setup with google apps. I'd like to connect the two so that I can
access my app engine application at www.hogbaysoftware.com. A few
months ago I set the same system up for another domain of mine
(taskpaper.com), and it's working great.

But it doesn't seem to be working, or at least I'm not getting any
feedback when I try to set it up for my hogbaysoftware.com domain.
I've tried setting things up from both ends (the app engine console)
and also from the google apps dashboard. But in both cases nothing
seems to happen after I go through the setup process. For example from
the google apps dashboard I:

1. Click add more services
2. Enter my app id hogbaysoftware for the Google App Engine service.
3. Click the Add it now button.
4. Accept the agreement, type www for the web address.
5. Click Continue to setup url
6. Add a CNAME pair of www ghs.google.com in my DNS records
7. Click the i've completed these steps button.

I don't get any errors, but after pressing that button I'm just sent
back to the google apps dashboard without any confirmation message.
The google app engine service isn't listed in my dashboard of
services. And if I go to my google app engine console, and look at the
versions view there's also no indication that any domains are being
setup.

What should I do next. I've just changed all my DNS records, and I'm
worried that my site will go dead when people find my DNS pointing to
ghs.google.com, but with nothing setup on the google side.

Thanks for any ideas on what to do next.

Jesse

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[google-appengine] Re: Production env different from development?

2008-11-07 Thread Hans


Thats it, I don't get a clear error.

The Django encoder wouldn't encode my custom business objects - that's
why I thought I had to roll my own.

Hans

On Nov 7, 6:43 pm, Anthony [EMAIL PROTECTED] wrote:
 Hard to tell without knowing what sort of errors are you getting..

 But, have you tried the included Django JSON encoder:

 from django.utils import simplejson

 object = simplejson.loads({JSON})
 string = simplejson.dumps(object)

 On Nov 7, 3:22 pm, Hans [EMAIL PROTECTED] wrote:

  I have the following code to convert common objects to JSON. On my dev
  box it works fine, but on production is simply does not and I can't
  really debug. Any suggestions?

  import types
  class TestObject():
      def __init__(self):
          self.dict = {'test class':'jaja'}
          self.name = 'testobject'
          self.lijst = ['ss','s','jaj']
          self.bool = True

  class JsonEncoder():
      ATTRIBUTES_TO_SKIP = ['__doc__','__module__']

      @staticmethod
      def encode(obj):
          return JsonEncoder._encode(obj, type(obj))

      @staticmethod
      def _encode(obj,type,baseNr = 0):
          typeCaseSwitch= {
                            types.DictType: JsonEncoder.encodeDict
                            ,types.InstanceType:
  JsonEncoder.encodeInstance
                            ,types.NoneType: JsonEncoder.encodeNone
                            ,types.StringType: JsonEncoder.encodeStr
                            ,types.UnicodeType: JsonEncoder.encodeStr
                            ,types.ListType: JsonEncoder.encodeList
                            ,types.BooleanType: JsonEncoder.encodeBool
                            ,types.IntType: JsonEncoder.encodeInt
                            ,types.TupleType: JsonEncoder.encodeList
                            }
          try:
              return typeCaseSwitch[type](obj)
          except Exception, inst:
              if len(obj.__class__.__bases__)  0:
                  baseType = obj.__class__.__bases__[++baseNr]
                  return JsonEncoder._encode(obj, baseType)

      @staticmethod
      def encodeDict(obj):
          result = []
          for key in obj:
              result.append(JsonEncoder.encode(key) + ':' +
  JsonEncoder.encode(obj[key]))
          return '{' + ','.join(result) + '}'

      @staticmethod
      def encodeList(obj):
          result = []
          for item in obj:
              result.append(JsonEncoder.encode(item))
          return '[' + ','.join(result) + ']' if len(result)  0 else
  '[]'

      @staticmethod
      def encodeBool(obj):
          return str(obj).lower()

      @staticmethod
      def encodeInt(obj):
          return str(obj)

      @staticmethod
      def encodeStr(obj):
          #obj = obj.replace('/', r'\/')
          obj = obj.replace('', r'\')
          obj = obj.replace('\b', r'\b')
          obj = obj.replace('\f', r'\f')
          obj = obj.replace('\n', r'')
          obj = obj.replace('\r', r'')
          obj = obj.replace('\t', r'')
          return '' + str(obj).replace('\\','').replace('\','\\
  \') + ''

      @staticmethod
      def encodeNone(obj):
          return 'null'

      @staticmethod
      def encodeInstance(obj):
          callableAttribs = []
          for attrib in dir(obj):
              if not callable(getattr(obj, attrib)) and attrib not in
  JsonEncoder.ATTRIBUTES_TO_SKIP:
                  callableAttribs.append('' + attrib + ':' +
  JsonEncoder.encode(getattr(obj, attrib)))
          if len(callableAttribs)  0:
              return '{' + ','.join(callableAttribs) + '}'
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[google-appengine] Re: Permanent Unique User Identifier

2008-11-07 Thread Ryan Lamansky


Alexander Kojevnikov: Although your plan would function, it offers no
protection from email address changes.  If the user changes their
email address, they would no longer match their original UserProfile
(because UserProperty is just a fancy name for string, as it stores
only the email address), thus cutting them off from all referenced
data.

-Ryan
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[google-appengine] Re: Google App Engine setup sequence...

2008-11-07 Thread Jesse Grosjean


Thank you very much for your quick reply. Your suggestion seems to
have fixed the problem. I now see the app engine service in my google
apps dashboard.
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[google-appengine] Re: Production env different from development?

2008-11-07 Thread Peter Recore


In order for us to help debug, you need to give us a few more
details.  If we don't know what's broken, we can't help you fix
it :-)  Remember, we know a little bit about App Engine, but nothing
about your application or how it works. You'll get the best results if
you include at least these two details:

1.  what you expect to see when it works.
2.  what you are seeing instead.

Good luck!

On Nov 7, 1:56 pm, Hans [EMAIL PROTECTED] wrote:
 Thats it, I don't get a clear error.

 The Django encoder wouldn't encode my custom business objects - that's
 why I thought I had to roll my own.

 Hans

 On Nov 7, 6:43 pm, Anthony [EMAIL PROTECTED] wrote:

  Hard to tell without knowing what sort of errors are you getting..

  But, have you tried the included Django JSON encoder:

  from django.utils import simplejson

  object = simplejson.loads({JSON})
  string = simplejson.dumps(object)

  On Nov 7, 3:22 pm, Hans [EMAIL PROTECTED] wrote:

   I have the following code to convert common objects to JSON. On my dev
   box it works fine, but on production is simply does not and I can't
   really debug. Any suggestions?

   import types
   class TestObject():
       def __init__(self):
           self.dict = {'test class':'jaja'}
           self.name = 'testobject'
           self.lijst = ['ss','s','jaj']
           self.bool = True

   class JsonEncoder():
       ATTRIBUTES_TO_SKIP = ['__doc__','__module__']

       @staticmethod
       def encode(obj):
           return JsonEncoder._encode(obj, type(obj))

       @staticmethod
       def _encode(obj,type,baseNr = 0):
           typeCaseSwitch= {
                             types.DictType: JsonEncoder.encodeDict
                             ,types.InstanceType:
   JsonEncoder.encodeInstance
                             ,types.NoneType: JsonEncoder.encodeNone
                             ,types.StringType: JsonEncoder.encodeStr
                             ,types.UnicodeType: JsonEncoder.encodeStr
                             ,types.ListType: JsonEncoder.encodeList
                             ,types.BooleanType: JsonEncoder.encodeBool
                             ,types.IntType: JsonEncoder.encodeInt
                             ,types.TupleType: JsonEncoder.encodeList
                             }
           try:
               return typeCaseSwitch[type](obj)
           except Exception, inst:
               if len(obj.__class__.__bases__)  0:
                   baseType = obj.__class__.__bases__[++baseNr]
                   return JsonEncoder._encode(obj, baseType)

       @staticmethod
       def encodeDict(obj):
           result = []
           for key in obj:
               result.append(JsonEncoder.encode(key) + ':' +
   JsonEncoder.encode(obj[key]))
           return '{' + ','.join(result) + '}'

       @staticmethod
       def encodeList(obj):
           result = []
           for item in obj:
               result.append(JsonEncoder.encode(item))
           return '[' + ','.join(result) + ']' if len(result)  0 else
   '[]'

       @staticmethod
       def encodeBool(obj):
           return str(obj).lower()

       @staticmethod
       def encodeInt(obj):
           return str(obj)

       @staticmethod
       def encodeStr(obj):
           #obj = obj.replace('/', r'\/')
           obj = obj.replace('', r'\')
           obj = obj.replace('\b', r'\b')
           obj = obj.replace('\f', r'\f')
           obj = obj.replace('\n', r'')
           obj = obj.replace('\r', r'')
           obj = obj.replace('\t', r'')
           return '' + str(obj).replace('\\','').replace('\','\\
   \') + ''

       @staticmethod
       def encodeNone(obj):
           return 'null'

       @staticmethod
       def encodeInstance(obj):
           callableAttribs = []
           for attrib in dir(obj):
               if not callable(getattr(obj, attrib)) and attrib not in
   JsonEncoder.ATTRIBUTES_TO_SKIP:
                   callableAttribs.append('' + attrib + ':' +
   JsonEncoder.encode(getattr(obj, attrib)))
           if len(callableAttribs)  0:
               return '{' + ','.join(callableAttribs) + '}'
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[google-appengine] How to pass the password to appcfg.py update in a python script?

2008-11-07 Thread Alexander Orlov


The --passin parameter makes it possible to pass the password via
stdin to appcfg.py. I have wrote a corresponding Ant target which use
this parameter to read the password from a file. Here you can see the
core part of this Ant target:

##
exec executable=${python} input=${pwd_dir}/
loxal.key
arg value=${gae.home}/appcfg.py /
arg value=--email=${gae.email} /
!--
passin is necessary to supply the
password via the inputfile
--
arg value=--passin /
arg value=update /
arg value=${build} /
/exec
##

If I execute this target the application is automatically uploaded to
Google without any password prompt. Now I have wrote a Python method
which is trying to do the same:

##
def gaeUpdate(self):

update the GAE application


#password = open('%s/loxal.key' % PWD_DIR).read()

args = (
'',
'--verbose',
'--email=%s' % USER_NAME,
#passin is necessary to supply the password via the
input file
'--passin',
'update',
PATH_PRJ_BUILD,
)

os.execv('%s/appcfg.py' % PATH_GAE, args)
##

But how can I pass the password variable to os.execv? When I call
this Python method a password prompt appears.
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[google-appengine] Observing GAE Scalability (or trying to ...)

2008-11-07 Thread David Underhill


I have read all about GAE, watched the interesting Google I/O videos,
and written some simple (toy) applications.  Now, I would really like
to be able to demonstrate to myself, with a simple toy application,
that GAE can out-scale what a single dedicated host can do.

When I set off on this experiment, I was expecting it to be easy to
demonstrate that GAE can handle some request pattern which my PC
(temporarily running as a LAMP [with mod_python] box) would grind to a
halt on.

Perhaps my results are just an artifact of the current quotas, but
more likely my test applications are stressing scalability in the
directions GAE scales.  I'll describe my current approach and let
people here help point in the right direction (hopefully).  I use a
program like htttperf to spawn requests from a cluster of (~20)
machines.  I specify a page to request, the target request per second
rate, and the duration of the test.  I also specify a time period over
which the requests per second rate grows linearly from 0 to the
target.  I'm currently trying parameters in the range of 10-20 reqs/
sec for a duration of a few minutes after a ramp-up of a few minutes.

I have tried this with three separate toy applications:
   1) A python script which sleeps, say for 0.1sec, then returns a
trivial page.  This was a silly idea b/c the PC simply spawns tons of
processes which are doing nothing and easily keeps up with even quite
high reqs per sec.  GAE dies much sooner since sleeping seems to count
against your CPU time.

   2) A python script which generates a random number through an
process which is intentionally slow -- so that it takes about 0.1sec
on both my PC and GAE for an individual request.  At 20 reqs/sec, it
seems like the (dual-corE) PC should die as requests come in faster
than it can handle them while GAE should be able to scale -- but GAE
ends up going over quota.  Maybe I need to revisit the ramping up
process and make sure it is really working like I think?

   3) Use a DB with string-integer pairs.  The strings are an average
of 50B.  Have a python script which queries for the first N records
greater than some random string.  Then return the sum of some of the
integers from these N records (randomly chosen).  The PC is running
MySQL and does the same select, and does the summation by iterating
over the N records like the GAE app to be fair (SQL could probably
be even faster by doing the aggregation in the query rather than in
python).  With N=20 and the DB having about 300k records, GAE
unfortunately times out while the PC version is almost instantaneous
(for individual requests).


What ideas do you have for demonstrating that GAE can scale better
than PC, at least under certain conditions?  I have no doubt that I'm
missing something.  For now, I'm going to focus on the ramp-up portion
and make sure that's working correctly, though I imagine there are
probably better approaches than the above three for trying to
demonstrate this and I'd love to hear your thoughts.

:)  Thanks.

~ David
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[google-appengine] Re: How to pass the password to appcfg.py update in a python script?

2008-11-07 Thread David Symonds


On Fri, Nov 7, 2008 at 11:29 AM, Alexander Orlov
[EMAIL PROTECTED] wrote:

os.execv('%s/appcfg.py' % PATH_GAE, args)

Check the Python documentation, because you've misunderstood os.execv.
You'll want to use os.popen instead.


Dave.

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[google-appengine] Re: No such file or directory

Hi Chris,

If you are interested in having this change be considered for implementation
in to the SDK, you should sign a CLA and submit the patch in the issue
tracker.

Details can be found here:
http://groups.google.com/group/google-appengine/web/how-to-submit-a-patch-to-the-sdk

-Marzia

On Thu, Nov 6, 2008 at 10:23 PM, Chris [EMAIL PROTECTED] wrote:


 This seems to be a bug in app engine, with the way datastore_path is
 interpreted. Specifically, some code treats datastore_path as relative
 while other code treats it as absolute.

 I think this can be fixed by changing line 207 in /google/appengine/
 tools/dev_appserver_main.py from:

  option_dict[ARG_DATASTORE_PATH] = value

 to:
  option_dict[ARG_DATASTORE_PATH] = os.path.abspath(value)

 Chris

 On Nov 7, 12:45 am, Chris [EMAIL PROTECTED] wrote:
  I'm saving my local datastore to the same folder as my application
  code (instead of the default /tmp since this is periodically deleted).
  When I try to use the .put() method on a model object, I keep getting
  this error:
 
  Traceback (most recent call last):
File /home/chris/google_appengine/google/appengine/ext/webapp/
  __init__.py, line 501, in __call__
  handler.post(*groups)
File /home/chris/myapp/views.py, line 102, in post
  entity.put()
File /home/chris/google_appengine/google/appengine/ext/db/
  __init__.py, line 618, in put
  return datastore.Put(self._entity)
File /home/chris/google_appengine/google/appengine/api/
  datastore.py, line 160, in Put
  apiproxy_stub_map.MakeSyncCall('datastore_v3', 'Put', req, resp)
File /home/chris/google_appengine/google/appengine/api/
  apiproxy_stub_map.py, line 46, in MakeSyncCall
  stub.MakeSyncCall(service, call, request, response)
File /home/chris/google_appengine/google/appengine/api/
  datastore_file_stub.py, line 305, in MakeSyncCall
  (getattr(self, _Dynamic_ + call))(request, response)
File /home/chris/google_appengine/google/appengine/api/
  datastore_file_stub.py, line 353, in _Dynamic_Put
  self.__WriteDatastore()
File /home/chris/google_appengine/google/appengine/api/
  datastore_file_stub.py, line 239, in __WriteDatastore
  self.__WritePickled(encoded, self.__datastore_file)
File /home/chris/google_appengine/google/appengine/api/
  datastore_file_stub.py, line 291, in __WritePickled
  os.rename(tmpfile.name, filename)
  OSError: [Errno 2] No such file or directory
 
  Why is this happening and how do I fix it? This doesn't happen when I
  keep the datastore in /tmp, but then the datastore periodically gets
  deleted...since it's in /tmp.
 


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[google-appengine] Re: “bad request error 400” w hen i bind my domain name to the application

Hi,

Are you able to access this page at all directly?
https://appengine.google.com/deployment/newdomain?app_id=[YOUR_APP_ID]

If not, can you add the domain through your cPanel?  In the dashboard, what
happens when you click 'Add more services' and try to add your App Engine
app through the Apps interface?

If none of these work, can you please provide your App Id so that I can
further investigate what might be causing the issue?

-Marzia

On Fri, Nov 7, 2008 at 6:45 AM, papa [EMAIL PROTECTED] wrote:


 nobody care about this?

 On 11月7日, 下午10时14分, papa [EMAIL PROTECTED] wrote:
  hi, I hava a domain name and the google app service, now I want to
  bind a application of the app engine to the domain, but when I click
  the Add Domain... button on the Version page, it show me a new page
  with Bad Request Error 400 on it!!!
 
  ps: I have change the google app to next generation and make it
  default language to en-us
 


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[google-appengine] Need help displaying images

2008-11-07 Thread webappnoob


I need help displaying images upload from the web that is store in a
db.model..does anyone have any example other then the one from
google???

thank you!!

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[google-appengine] Re: How to pass the password to appcfg.py update in a python script?

2008-11-07 Thread Calvin Spealman



I suggest the subprocess module for consistant process invocation in all 
circumstances.

On Nov 7, 2008 3:07 PM, David Symonds [EMAIL PROTECTED] wrote:

On Fri, Nov 7, 2008 at 11:29 AM, Alexander Orlov [EMAIL PROTECTED] 
wrote:  os.ex...
Check the Python documentation, because you've misunderstood os.execv.
You'll want to use os.popen instead.


Dave.

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[google-appengine] validation of GET/POST data in URL handlers

2008-11-07 Thread adrian



Every URL an app-engine app handles is public since it appears in the
URL bar in the browser.   So even if it begins with _ or is strangely
spelled a user could use the back button or history and directly edit
a URL, then submit it and likely cause an error unless everything is
validated.

Is it good practice to validate every piece of data coming in to a URL
handler by GET or POST and not assume anything?   Or accept a small
number of errors when people do stupid things.I can certainly
validate everything but it obscures the code.

Thanks

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[google-appengine] Re: Observing GAE Scalability (or trying to ...)

2008-11-07 Thread Ross Ridge


David Underhill wrote:
 What ideas do you have for demonstrating that GAE can scale better
 than PC, at least under certain conditions?

The problem with your first two tests is that they scale easily in any
environment.  Just add more servers as necessary.

The problem with the third test is that it tests how complex of a
query can be handled in a single request.  Google App Engine allows
your app  scale to handle millions of requests.  It doesn't help your
app handle bigger and bigger queries.

Ross Ridge

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[google-appengine] Re: Need help displaying images

2008-11-07 Thread Sylvain


http://simpleviewer4gae.appspot.com/

Code source (manage part)

Regards

On 7 nov, 21:03, webappnoob [EMAIL PROTECTED] wrote:
 I need help displaying images upload from the web that is store in a
 db.model..does anyone have any example other then the one from
 google???

 thank you!!
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[google-appengine] Re: Observing GAE Scalability (or trying to ...)

2008-11-07 Thread David Underhill


On Nov 7, 1:21 pm, Ross Ridge [EMAIL PROTECTED] wrote:
 The problem with your first two tests is that they scale easily in any
 environment.  Just add more servers as necessary.

True, but adding extra servers starts to get complicated -- something
GAE gives you for free.  The test seems (superficially at least) to be
reasonable when GAE is pitted against a single server.

 The problem with the third test is that it tests how complex of a
 query can be handled in a single request.  Google App Engine allows
 your app  scale to handle millions of requests.  It doesn't help your
 app handle bigger and bigger queries.

Fair enough -- so would a better test mean a database with many fewer
rows?   Then the reqs/sec would have to be pretty high to stress out
the PC doing simple queries ... but still seems like it should be
possible in principle.

~ David
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[google-appengine] Re: Permanent Unique User Identifier


Ryan,

I see now. It looks like Google is going to fix this in the future,
see the last paragraph on this page:
http://code.google.com/appengine/docs/users/userobjects.html

I couldn't find an issue for this, adding one would speed this up...

Alex

On Nov 8, 6:09 am, Ryan Lamansky [EMAIL PROTECTED] wrote:
 Alexander Kojevnikov: Although your plan would function, it offers no
 protection from email address changes.  If the user changes their
 email address, they would no longer match their original UserProfile
 (because UserProperty is just a fancy name for string, as it stores
 only the email address), thus cutting them off from all referenced
 data.

 -Ryan
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[google-appengine] Re: Observing GAE Scalability (or trying to ...)


 Fair enough -- so would a better test mean a database with many fewer
 rows?   Then the reqs/sec would have to be pretty high to stress out
 the PC doing simple queries ... but still seems like it should be
 possible in principle.

I would set up a Kind with a lot of entities (100K+) and ran a query
that just returns a few of them (~20) using a composite index (2-4
fields). This should look like an average datastore hit by an average
web app.

Nevertheless, I like what you are doing. Please keep us updated!
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[google-appengine] Re: Permanent Unique User Identifier


Google openid already supports persistent id independent of user name
or email address.

http://code.google.com/apis/accounts/docs/OpenID.html

On Nov 7, 5:56 pm, Alexander Kojevnikov [EMAIL PROTECTED]
wrote:
 Ryan,

 I see now. It looks like Google is going to fix this in the future,
 see the last paragraph on this 
 page:http://code.google.com/appengine/docs/users/userobjects.html

 I couldn't find an issue for this, adding one would speed this up...

 Alex

 On Nov 8, 6:09 am, Ryan Lamansky [EMAIL PROTECTED] wrote:

  Alexander Kojevnikov: Although your plan would function, it offers no
  protection from email address changes.  If the user changes their
  email address, they would no longer match their original UserProfile
  (because UserProperty is just a fancy name for string, as it stores
  only the email address), thus cutting them off from all referenced
  data.

  -Ryan
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[google-appengine] Purchased domain via Google Apps. How to host my appengine app on this domain?


I'd like to map my app to http://myurl.com (also known as a naked
domain).

I purchased a domain via Google Apps. As far as I can tell I only
found the option to host my AppEngine app on a subdomain of the
purchased domain!

Please please please tell me I can also host it directly on the naked
domain, i.e. something like http://myurl.com

thx...jago
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[google-appengine] Re: Purchased domain via Google Apps. How to host my appengine app on this domain?

Hi,

This is currently not possible:
http://code.google.com/appengine/kb/commontasks.html#naked_domain

-Marzia

On Fri, Nov 7, 2008 at 4:59 PM, jago [EMAIL PROTECTED] wrote:


 I'd like to map my app to http://myurl.com (also known as a naked
 domain).

 I purchased a domain via Google Apps. As far as I can tell I only
 found the option to host my AppEngine app on a subdomain of the
 purchased domain!

 Please please please tell me I can also host it directly on the naked
 domain, i.e. something like http://myurl.com

 thx...jago
 


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[google-appengine] Re: Purchased domain via Google Apps. How to host my appengine app on this domain?


Why did I register this domain if I then can't host my app there? Has
Google gone insane?

I was possible for a long time! I cannot believe they did this :(((

Any idea if it will ever be possible to host the app directly on a
naked domain?

On Nov 8, 2:02 am, Marzia Niccolai [EMAIL PROTECTED] wrote:
 Hi,

 This is currently not 
 possible:http://code.google.com/appengine/kb/commontasks.html#naked_domain

 -Marzia

 On Fri, Nov 7, 2008 at 4:59 PM, jago [EMAIL PROTECTED] wrote:

  I'd like to map my app tohttp://myurl.com(also known as a naked
  domain).

  I purchased a domain via Google Apps. As far as I can tell I only
  found the option to host my AppEngine app on a subdomain of the
  purchased domain!

  Please please please tell me I can also host it directly on the naked
  domain, i.e. something likehttp://myurl.com

  thx...jago
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[google-appengine] Re: Observing GAE Scalability (or trying to ...)

2008-11-07 Thread Ross Ridge


David Underhill wrote:
 Fair enough -- so would a better test mean a database with many fewer
 rows?

No.

 Then the reqs/sec would have to be pretty high to stress out
 the PC doing simple queries ... but still seems like it should be
 possible in principle.

I don't see why you think testing the scalability of a single PC is
useful.  It will hit some limit or another and then start dropping
requests.  That means any solution limited to using just one PC has
*no* scalability.

If you're really asking if it would be better to host your application
on a PC in your basement or on Google App Engine, then it depends on
what your application does.  If your application needs to scale to
handle an unbounded number of requests then GAE is likely to be the
better choice.  If your application is compute heavy or needs to
perform a complex series of queries and updates then GAE may not be
able to handle a single request.

Ross Ridge

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[google-appengine] Re: Purchased domain via Google Apps. How to host my appengine app on this domain?


I guess part of the reason is dns does not support domain name cname.
Even google.com itself is just a redirect to www.google.com


On Nov 7, 8:33 pm, jago [EMAIL PROTECTED] wrote:
 Why did I register this domain if I then can't host my app there? Has
 Google gone insane?

 I was possible for a long time! I cannot believe they did this :(((

 Any idea if it will ever be possible to host the app directly on a
 naked domain?

 On Nov 8, 2:02 am, Marzia Niccolai [EMAIL PROTECTED] wrote:

  Hi,

  This is currently not 
  possible:http://code.google.com/appengine/kb/commontasks.html#naked_domain

  -Marzia

  On Fri, Nov 7, 2008 at 4:59 PM, jago [EMAIL PROTECTED] wrote:

   I'd like to map my app tohttp://myurl.com(alsoknown as a naked
   domain).

   I purchased a domain via Google Apps. As far as I can tell I only
   found the option to host my AppEngine app on a subdomain of the
   purchased domain!

   Please please please tell me I can also host it directly on the naked
   domain, i.e. something likehttp://myurl.com

   thx...jago
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[google-appengine] Re: Purchased domain via Google Apps. How to host my appengine app on this domain?

2008-11-07 Thread Roberto Saccon


just to help you a bit with the anger management:

While it was possible, it was never recommended (by those I would
consider experts), because only with subdomains you had geolocation
distributed / optimized service (with naked domain it was statically
wired to the servers)

regards
Roberto

On Nov 7, 11:33 pm, jago [EMAIL PROTECTED] wrote:
 Why did I register this domain if I then can't host my app there? Has
 Google gone insane?

 I was possible for a long time! I cannot believe they did this :(((

 Any idea if it will ever be possible to host the app directly on a
 naked domain?

 On Nov 8, 2:02 am, Marzia Niccolai [EMAIL PROTECTED] wrote:

  Hi,

  This is currently not 
  possible:http://code.google.com/appengine/kb/commontasks.html#naked_domain

  -Marzia

  On Fri, Nov 7, 2008 at 4:59 PM, jago [EMAIL PROTECTED] wrote:

   I'd like to map my app tohttp://myurl.com(alsoknown as a naked
   domain).

   I purchased a domain via Google Apps. As far as I can tell I only
   found the option to host my AppEngine app on a subdomain of the
   purchased domain!

   Please please please tell me I can also host it directly on the naked
   domain, i.e. something likehttp://myurl.com

   thx...jago
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[google-appengine] Re: Purchased domain via Google Apps. How to host my appengine app on this domain?

2008-11-07 Thread Rodrigo Moraes


On Sat, Nov 8, 2008 at 12:02 AM, jago wrote:
 At least from my tests so far Google Apps does not allow me to host
 the AppEngine app directly on www.example.com but enforces me to
 define a subdomain. Am I wrong?

yes. there are many app engine apps out there using a www subdomain.
this is perfectly possible.

and since we are on this, anybody knows the technical reasons why it
is not possible to have a *.domain.com pointing to a app in app
engine? i tried a silly workaround, pointing www.domain.com to google,
and then pointing *.domain.com to www.domain.com, but it didn't work.
silly because afaik it is not possible to point wildcard subdomains to
cnames. :-P

do you think this will be possible anytime in the future? i wanted to
setup an app using user1.domain.com, user2.domain.com etc, like others
here (see issue #113:
http://code.google.com/p/googleappengine/issues/detail?id=113)

-- rodrigo

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[google-appengine] Re: Purchased domain via Google Apps. How to host my appengine app on this domain?


okok...I know. Google calls them 'access URLs' but a common although
wrong term is subdomain.

let me rephrase my question: Is it possible if I purchased www.example.com
from Google to directly make my AppEngine app accessible if people
type in there URL field: www.example.com ? However they should not be
re-directed to www.myapp.example.com but directly stay at www.example.com
where the AppEngine app is.

Is this possible? How?

So far Google Apps only allows me to make my AppEngine app accessible
at: www.myapp.example.com

Thanks...jago

On Nov 8, 3:06 am, Roberto Saccon [EMAIL PROTECTED] wrote:
 I think you don't know what a subdomain is:

 www.example.comis a subdomain

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[google-appengine] Re: Observing GAE Scalability (or trying to ...)

2008-11-07 Thread Peter Recore


Here's my take on what David is really asking:

Is there any black box test we as users can design, right now, to
prove app engine can handle higher loads than a commodity PC.

While it may not be super useful, it is an interesting thought
experiment.

For all we know, each of our apps is running on a PC in marzia's
basement :)

Does the app engine team share any stories they can share about
internal load tests they've done, and how many millions of
simultaneous requests their app was serving?

On Nov 7, 8:49 pm, Ross Ridge [EMAIL PROTECTED] wrote:
 David Underhill wrote:
  Fair enough -- so would a better test mean a database with many fewer
  rows?

 No.

  Then the reqs/sec would have to be pretty high to stress out
  the PC doing simple queries ... but still seems like it should be
  possible in principle.

 I don't see why you think testing the scalability of a single PC is
 useful.  It will hit some limit or another and then start dropping
 requests.  That means any solution limited to using just one PC has
 *no* scalability.

 If you're really asking if it would be better to host your application
 on a PC in your basement or on Google App Engine, then it depends on
 what your application does.  If your application needs to scale to
 handle an unbounded number of requests then GAE is likely to be the
 better choice.  If your application is compute heavy or needs to
 perform a complex series of queries and updates then GAE may not be
 able to handle a single request.

                     Ross Ridge
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[google-appengine] Re: Purchased domain via Google Apps. How to host my appengine app on this domain?

2008-11-07 Thread Rodrigo Moraes


On Sat, Nov 8, 2008 at 12:20 AM, jago wrote:
 let me rephrase my question: Is it possible if I purchased www.example.com
 from Google to directly make my AppEngine app accessible if people
 type in there URL field: www.example.com ? However they should not be
 re-directed to www.myapp.example.com but directly stay at www.example.com
 where the AppEngine app is.

 Is this possible? How?

set the domain you want to point in the service settings for the the
app, as described here:

http://www.google.com/support/a/bin/answer.py?hl=enanswer=91080

-- rodrigo

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[google-appengine] Re: Purchased domain via Google Apps. How to host my appengine app on this domain?


Just set url to www in your app setting.

On Nov 7, 9:20 pm, jago [EMAIL PROTECTED] wrote:
 okok...I know. Google calls them 'access URLs' but a common although
 wrong term is subdomain.

 let me rephrase my question: Is it possible if I purchasedwww.example.com
 from Google to directly make my AppEngine app accessible if people
 type in there URL field:www.example.com? However they should not be
 re-directed towww.myapp.example.combut directly stay atwww.example.com
 where the AppEngine app is.

 Is this possible? How?

 So far Google Apps only allows me to make my AppEngine app accessible
 at:www.myapp.example.com

 Thanks...jago

 On Nov 8, 3:06 am, Roberto Saccon [EMAIL PROTECTED] wrote:

  I think you don't know what a subdomain is:

 www.example.comisa subdomain
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[google-appengine] Re: Purchased domain via Google Apps. How to host my appengine app on this domain?




On Nov 8, 3:29 am, Rodrigo Moraes [EMAIL PROTECTED] wrote:
 On Sat, Nov 8, 2008 at 12:20 AM, jago wrote:
  let me rephrase my question: Is it possible if I purchasedwww.example.com
  from Google to directly make my AppEngine app accessible if people
  type in there URL field:www.example.com? However they should not be
  re-directed towww.myapp.example.combut directly stay atwww.example.com
  where the AppEngine app is.

  Is this possible? How?

 set the domain you want to point in the service settings for the the
 app, as described here:

 http://www.google.com/support/a/bin/answer.py?hl=enanswer=91080

Thanks but I know this like already and also the service settings
page. It is impossible to directly make my AppEngine app accessible
at:

www.example.com

I can only make it accessible at some longer access URL like:

www.myapp.example.com

Please proof me wrong, I would honestly appreciate it.

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[google-appengine] Re: Question about Shell (Featured App)

2008-11-07 Thread Alex Popescu


I'm really sorry if it sounded that way, so please do not take it this
way.

I have made some changes according to my above comments and it looks
like it is working as expected. Now I am not really sure the changes
are perfectly 'pythonic' (as I'm no expert), but here is what I've
done:

FrontPageHandler:

  def get(self):
if not users.get_current_user():
  return self.error(403)
# set up the session. TODO: garbage collect old shell sessions
session_key = self.request.get('session')
if session_key:
  session = Session.get(session_key)
if not session_key or not session:
  # create a new session
  session = Session()
  session.unpicklables = [db.Text(line) for line in
INITIAL_UNPICKLABLES]
  session_key = session.put()
  self.redirect(ROOT_PATH + '/shell?session=%s' % session_key)

  # rest is identical

   def post(self):
user = users.get_current_user()
if not user:
  return self.error(403)
session_key = self.request.get('session')
if session_key:
  Session.get(session_key).delete()
self.redirect(users.create_logout_url(ROOT_PATH + '/shell'))

and plugged the post method to the Logout action. Indeed the post
method should check if the session object actually exists before
attempting to delete it.

I'm opened to all comments, opinions and ideas.

./alex
On Nov 8, 5:33 am, yejun [EMAIL PROTECTED] wrote:
 Your expectation on a sample is a little bit too high.

 On Nov 7, 9:59 pm, Alex Popescu [EMAIL PROTECTED]
 wrote:

  I was looking at Shell, the Featured app available here [1] and I have
  a couple of questions related to its 'Session' management.

  1. I think that the FrontPageHandler should redirect to the URL
  containing the newly created 'Session' session key, otherwise any page
  refresh would lead to a new 'Session'

  2. it looks like the Sessions are persisted forever in the storage and
  there is no way to clean them out (automatically). It looks like the
  only way to do it is to run at the end of your 'scripting' session a
  db.delete(Session.all().fetch(10)). Maybe there should be a 'Logout'
  button that also takes care of this clean up.

  Thanks in advance for your comments,

  ./alex

  [1]http://code.google.com/p/google-app-engine-samples/downloads/list
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[google-appengine] Re: Google App Engine bloggers?

2008-11-07 Thread Bill


Jens has a good blog:
http://blog.appenginefan.com/

These blogs aren't really updated anymore:
http://kupuguy.blogspot.com/
http://appengineguy.com/

The cookbook and articles at the main App Engine site, though, are the
best resources IMHO.
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[google-appengine] Where should I report a persistent 500 Server error?

2008-11-07 Thread Alex Popescu


I am wondering where should I report a persisting 500 Server error:

[quote]
Error: Server Error

The server encountered an error and could not complete your request.
If the problem persists, please report your problem and mention this
error message and the query that caused it.
[/quote]

I have deployed a new major version of my app and I've tried to test
it either by using the versioned url and then by making this new
version the default one. Both attempts are resulting in the above
error.

Any ideas?

./alex
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[google-appengine] Re: Google App Engine bloggers?

2008-11-07 Thread Roberto Saccon


Just type appengine at blogsearch.google.com and subscribr with your
feed reader at the resulting URL, you will get anything posted about
appengine (it is not that much right now with that query)

regards
Roberto

On Nov 8, 2:04 am, Bill [EMAIL PROTECTED] wrote:
 Jens has a good blog:http://blog.appenginefan.com/

 These blogs aren't really updated 
 anymore:http://kupuguy.blogspot.com/http://appengineguy.com/

 The cookbook and articles at the main App Engine site, though, are the
 best resources IMHO.
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[google-appengine] Re: Observing GAE Scalability (or trying to ...)

2008-11-07 Thread Ross Ridge


David Underhill wrote:
 Exactly.  It is just a simple thought experiment.

It seems utterly pointless to me.  Google App Engine has the potential
to scale, a single PC doesn't.  There's your thought experiment.  You
haven't observed anything about GAE's scalability by testing the
performance of a PC.  (Which I thought was real, not imaginary.)

Ross Ridge

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[google-appengine] Re: entity number

2008-11-07 Thread David Symonds


On Fri, Nov 7, 2008 at 7:27 PM, lws68825 [EMAIL PROTECTED] wrote:

 Can anyone help me on getting the number of entity of a certain model?

Please search this list for sharded counter.


Dave.

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[google-appengine] Re: Where should I report a persistent 500 Server error?


Did you check the error log in your admin control panel?

On Nov 8, 3:05 pm, Alex Popescu [EMAIL PROTECTED]
wrote:
 I am wondering where should I report a persisting 500 Server error:

 [quote]
 Error: Server Error

 The server encountered an error and could not complete your request.
 If the problem persists, please report your problem and mention this
 error message and the query that caused it.
 [/quote]

 I have deployed a new major version of my app and I've tried to test
 it either by using the versioned url and then by making this new
 version the default one. Both attempts are resulting in the above
 error.

 Any ideas?

 ./alex
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[google-appengine] Re: How to upload file from local directory?


 It seems, this because the current appengine use older than Django
 1.0?

GAE has Django 0.96 built-in and it looks like newforms in 0.96
doesn't have the FileField.

If you want it you should include Django 1.0 with your project. You
can use app-engine-patch to ease the process.
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[google-appengine] Re: validation of GET/POST data in URL handlers

2008-11-07 Thread adrian


I will learn about those, thanks.

But there's still an AppEngine-specific version of the question:
does Django as supported on AppEngine have any useful validation
features, or are they in
the part of Django that is not supported?   Anyone got examples that
prevent attacks?

I validated most things with JavaScript, which helps the real user,
but I see that it won't do any good against a malicious user.

On Nov 7, 7:59 pm, Peter Recore [EMAIL PROTECTED] wrote:
 This question is not app engine specific.  Users can request a GET or
 POST with whatever values they want regardless of the underlying
 technology.  You should google Cross Site Scripting and SQL
 Injection to learn about the various evil things users can do to you
 if you don't validate your inputs.  most web frameworks have forms
 libraries that can simplify much of the validation.

 -peter

 On Nov 7, 4:14 pm, adrian [EMAIL PROTECTED] wrote:

  Every URL an app-engine app handles is public since it appears in the
  URL bar in the browser.   So even if it begins with _ or is strangely
  spelled a user could use the back button or history and directly edit
  a URL, then submit it and likely cause an error unless everything is
  validated.

  Is it good practice to validate every piece of data coming in to a URL
  handler by GET or POST and not assume anything?   Or accept a small
  number of errors when people do stupid things.    I can certainly
  validate everything but it obscures the code.

  Thanks
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[google-appengine] Re: validation of GET/POST data in URL handlers

2008-11-07 Thread David Symonds


On Fri, Nov 7, 2008 at 9:35 PM, adrian [EMAIL PROTECTED] wrote:

 I will learn about those, thanks.

 But there's still an AppEngine-specific version of the question:
 does Django as supported on AppEngine have any useful validation
 features, or are they in
 the part of Django that is not supported?   Anyone got examples that
 prevent attacks?

Django is not App Engine-specific.


Dave.

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[google-appengine] Re: Google App Engine bloggers?

2008-11-07 Thread Diego


Thanks for the responses. I will check them out.
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[google-appengine] Re: indexes for and queries