from:"Ikai L $Google$"

Re: [appengine-java] Re: pm.store() failing silently

2010-09-10 Thread Ikai L (Google)

Do you know what that index represents? I'm trying to build a set of
reproducible steps so that I can add more descriptions to the bug. That is -
how can I write code on my instance to make this happen?

On Fri, Sep 10, 2010 at 4:19 AM, John demowee...@gmail.com wrote:

 I was able to find the bug, filed:
 http://code.google.com/p/googleappengine/issues/detail?id=3700


 On Sep 7, 9:31 am, John demowee...@gmail.com wrote:
  Some more debugging info.
  When I get this error, I tried to store a new object UserPhotoTest
  (exactly the same, just renamed the class), with the same content, and
  it gets persisted properly, in the same request. After the test one
  gets persisted correctly - still in the same request - I try again the
  regularUserPhoto(creating a new instance, same content), and it
  still fails.
  This is 100% reproducible. So it seems that this is related to the
  servers where this entity is being persisted, which gets this flaky
  behavior. Not sure if this is a blobstore or datastore issue.
 
  On Sep 2, 2:14 pm, Ikai L (Google) ika...@google.com wrote:
 
 
 
 
 
 
 
   Does this consistently fail every 1/3 times, or at certain times? Not
 that
   it should matter, but how are you creating the PersistenceManager?
 
   On Wed, Sep 1, 2010 at 6:21 PM, John demowee...@gmail.com wrote:
This one is for App Engine team. Random silent failures, no
explanation.
 
I have a piece of code which only creates an entity and stores it
with
 
public void makeEntity() {
   UserPhoto photo = newUserPhoto(...);
this.pm.makePersistent(photo);
this.pm.close();
assert photo.key != null; // - fails from time to time
 
From time to time, the code above will fail. Maybe once every 3
times
(with the same parameters).
 
I am assuming that the store() call at the datastore level is failing
for whatever reason, but it is a silent fail as the code does not
throw any exception. When this happens I can confirm looking at the
datastore viewer that the entity was not persisted.
The size does not seem to matter (fails on 5kb as well as 200 kb).
 
I have logs of the app where back to back requests will fail first
and
succeeds next, with the exact same payload.
 
It would be great if the App Engine team can point to an open bug
which remotely explains this behavior.
 
(the problem was present with 1.3.4 already)
 
The entity model is :
@PersistenceCapable(identityType = IdentityType.APPLICATION,
detachable = true)
public classUserPhoto{
   @PrimaryKey
   @Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
   Key key;
   @Persistent
   Blob photo;
   @Persistent
   Blob thumbPhoto;
   @Persistent
   private Key user;
   @Persistent
   private int size;
   @Persistent
   private String filename;
   @Persistent
   private Date date;
   @Persistent
   private Boolean canDelete;
 
I tried persisting the entity with a transaction, and the problem is
the same.
 
This is my jdo-config
 
  persistence-manager-factory name=transactions-optional
  property name=javax.jdo.PersistenceManagerFactoryClass
 
   
 value=org.datanucleus.store.appengine.jdo.DatastoreJDOPersistenceManagerFa
 ctory/
 
  property name=javax.jdo.option.ConnectionURL
value=appengine/
  property name=javax.jdo.option.NontransactionalRead
value=true/
  property name=javax.jdo.option.NontransactionalWrite
value=true/
  property name=javax.jdo.option.RetainValues value=true/
  property name=datanucleus.appengine.autoCreateDatastoreTxns
value=true/
  property name=datanucleus.DetachOnClose value=true/
  /persistence-manager-factory
 
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Re: [appengine-java] Re: Need help choosing a frontend framework for a GAEj app, GWT seems like overkill

2010-09-10 Thread Ikai L (Google)

It's very hard to use GWT's RPC mechanism without using GWT. GWT's RPC
mechanism is nice because it provides a server side implementation, but on
the client side, you're still creating an AsyncCallback and programming in
an asynchronous manner. This is an area where Javascript really shines
because of first class functions you can pass around (not available in Java)
and closures (not available in Java unless you count anonymous inner
classes).

Rather than look at a single feature, look at the bigger picture. With GWT,
you get a ton of useful widgets and a way to programmatically (or via XML
via UiBinder) define your UI, you get an out-of-the-box event bus and
history manager. This is actually a pretty neat way to develop a web app
because you can compose widgets of widgets. I'd probably pick jQuery for
more web page like interaction or applications with a less desktop like
experience, because the interface for working with the DOM is one of the
best I've ever used (to select and hide all parents of list elements with a
class item, you'd do this: $(li.item).parents().hide());. jQuery's XHR
interface is simple and straightforward, and combined with a library like
Google GSON (http://code.google.com/p/google-gson/), you can build XHR rich
applications fairly easily.

I personally prefer GWT for anything that has to deal with detecting where a
mouse click is or key handler events, or something where I have to
programmatically assemble the UI which can be represented as a hierarchical
bag of widgets. The jQuery way would be to output some HTML and jam it into
an element using the .html() function, which is really only a notch above
using the DOM's innerHTML= attribute.

On Fri, Sep 10, 2010 at 4:47 AM, tempy fay...@gmail.com wrote:

 Thanks for the advice John.  I've been reading about GQuery and it
 does seem good, though I have some concerns about whether it might be
 abandoned.  I think my plan is to learn JQuery, as I feel like that
 should also teach me a lot about how the browser operates, which is a
 gap in my knowledge.  I think I should learn something close to the
 metal (metal being browser in this case) before moving on to
 frameworks that abstract the browser away to a greater extent.  I
 guess if I use JQuery, switching to GQuery at any time should not be
 problematic, and I get the best of both worlds.  And I would sure love
 to hang on to GWT's RPC mechanism.

 Mike

 On Sep 10, 12:56 am, John Patterson jdpatter...@gmail.com wrote:
  BTW, you can use GWT in a manor very similar to JQuery.  Take a look a
  GQuery by Ray Cromwell.  He has an incredible benchmark page which
  dynamically shows how GQuery out performs JQuery in almost every measure.
 
  On 10 September 2010 05:53, John Patterson jdpatter...@gmail.com
 wrote:
 
 
 
   You might want to look into Sitebricks which is a Google developed web
 app
   framework built on top of Guice.  It is a simple request response
 processor
   with no fancy component abstractions like Wicket or Tapestry.  This
 model
   fits in very well with GWT (or other  client frameworks) which request
 data
   via RPC or small snippets of rendered html to assemble on the client.
 
   It is still very much in active development so you have to be prepared
 to
   dig into the code and figure out the plumbing yourself.  The author,
 Dhanji,
   has built a fantastic API here - simple, powerful and clever.
 
  http://code.google.com/p/google-sitebricks/
 
   John
 
   On 10 September 2010 05:35, tempy fay...@gmail.com wrote:
 
   Thanks for the explanation Chris!
 
   Guess I'm learning jquery, golly, I'll be a real web programmer yet.
   =)
 
   On Sep 9, 7:58 pm, Chris (Google Employee) api.ch...@google.com
   wrote:
Hi Mike,
 
I think the reason we don't explicitly publish a list of frontend
frameworks that play well with App Engine is because there really
 is
no technical barrier between front end frameworks that work in the
browser such as JQuery, etc and the backend (App Engine). Many App
Engine users make full use of a myriad of front end technologies/
frameworks for UI creation ranging from HTML5/JS/CSS to flash etc.
 
JQuery is especially popular for a variety of Web app usages, so if
that works for you, I'd definitely continue trying it out.
 
Hope this helps,
-Chris
 
On Sep 9, 10:43 am, tempy fay...@gmail.com wrote:
 
 Hello all,
 
 A little background... I'm mostly new to web frontend development,
 I
 come from a mostly backend and desktop background.  I have a GAEj
 app
 that provides the backend for a rather sophisticated
 desktop/mobile
 app.  This backend will also drive a website in addition to the
 desktop/mobile app.
 
 The website will show a small subset of the data in the system.  I
 started with GWT, but it doesn't seem to be quite right.  The
 website
 is for presentation of a small subset of the system's data only,
 and
 users do not interact with the data

Re: [google-appengine] Index build stuck Server Error 500 when trying to view Datastore Indexes page in admin console

2010-09-10 Thread Ikai L (Google)

I think one thing we can do better is to schedule some index builds for apps
with no data ahead of apps with a lot of data, since they are essentially
no-ops. Of course, one wonders if this means large index builds will be
delayed forever? *rubs hands together for Computer Science fun*

On Thu, Sep 9, 2010 at 7:11 PM, Jeff Schwartz jefftschwa...@gmail.comwrote:

Soon after I posted the issue it was fixed. I don't know how or by whom but
somehow it got resolved. I waited a few hours for the index to build even
though there was no data to which the index was referring to. Thank you,
Ikai.

On Thu, Sep 9, 2010 at 9:39 PM, Ikai L (Google) ika...@google.com wrote:

The indexes all look to be serving to me.

On Thu, Sep 9, 2010 at 2:07 PM, Jeff Schwartz jefftschwa...@gmail.comwrote:

I have 1 index that was building for quite a while though there was no
data associated with the index. When I clicked on the Datastore Indexes link
in the admin console I am directed to a error page that says:

Server Error (500)

A server error has occurred.

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

My application's id is i-emote and its version is 1.

Can anyone fix this for me and as soon as posible? Thanks in advance.

Jeff

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Reddit: http://www.reddit.com/r/appengine

--
--

Jeff

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Re: [google-appengine] Cron Job and Cursors

2010-09-10 Thread Ikai L (Google)

Here's a link:

http://code.google.com/p/appengine-mapreduce/

On Fri, Sep 10, 2010 at 8:58 AM, Robert Kluin robert.kl...@gmail.comwrote:

You might want to look into the mapper api. It is designed to work
with large datasets, so it may be a good fit.

Robert

On Fri, Sep 10, 2010 at 07:11, Sümer Cip sum...@gmail.com wrote:
I have 1 million recordes. I am doing statitical work with the data
field.
What I want to do is to work in batches(with crons) with my data. That's
all.

On Fri, Sep 10, 2010 at 6:56 AM, Robert Kluin robert.kl...@gmail.com
wrote:

What is many entities, is it 100, 1,000, 1,000,000, more? What are
you doing with the info field? Are you aggregating something?
Transforming it? Writing one new model for each entity?

What do you mean continue another day? Do you mean process some
entities then stop and continue processing on another day?

Robert

On Thu, Sep 9, 2010 at 22:34, Sumer Cip sum...@gmail.com wrote:
Hi,
I have a very basic problem. Below is my model:

class DummyModel:
id:Integer
info:Integer
added:DateTime

What I need to do is to have a cron job running per day to filter on
added field and do something with the info field, but I have many
entities and I want to make this process in batches maybe continue
another day. How to do that efficiently? Cursors? Can we use them with
cron jobs?

Any example suggestion would be appreciated.

Thanks,

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Re: [google-appengine] Re: BUSINESS APP OR NOT?

2010-09-10 Thread Ikai L (Google)

Yes, only users on your Google Apps domain will be able to use a GAE4B
application. You won't be able to open it up to general @gmail.com, OpenID
users, or use your own authorization system.

On Fri, Sep 10, 2010 at 9:29 AM, colin nos...@carter.es wrote:

Ikai, thanks for an encouraging answer :-).
The terms are more than little confusing for newbies like me and I
don't want to start down a wrong track. Do I understand that my
planned tool can be accessed via a url and restricted via a logon
procedure to a handful of users? (like memobuild.com?)

If my experience is positive, I want to develop bigger projects for
the Google App Engine. One of these may have a smart-phone browser-
interface. But first, I have to get up to speed with Python (looks
good so far and I sense it will execute faster than PHP).

On Sep 9, 8:52 pm, Ikai L (Google) ika...@google.com wrote:
Normal pricing. GAE4B pricing applies if you are writing an application
that
is only accessible for Google Apps (Gmail, Docs) users and not the
general
public. Here's an example:

Google App Engine (current)

You create an image sharing service anyone can use.

Google App Engine for Business

You create an expense reporting tool that you want tied to a specific
Google
Apps Domain, say, ikaicorp.com that only us...@ikaicorp.com can use.
This
application can be administered via the ikaicorp.com domain console.

On Wed, Sep 8, 2010 at 12:15 PM, colin nos...@carter.es wrote:
I am confused by the two pricing policies (app engine for business and
app engine).

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Re: [google-appengine] Index build stuck Server Error 500 when trying to view Datastore Indexes page in admin console

2010-09-10 Thread Ikai L (Google)

Index building isn't done in what we call user space, but that's certainly
one possibility. I think we're being a bit more intelligent about how we
schedule work, however, and it might be a bit more involved of a solution
than just creating multiple queues - for instance, you could effective
game the system by inserting a ton of data after the index building begins
(and we don't want to lock your datastore). We recognize that this is a
major pain point for developers and there's some work going on in this area
to make index building more fair all around.

On Fri, Sep 10, 2010 at 1:25 PM, Jeff Schwartz jefftschwa...@gmail.comwrote:

I think the problem with 2 tasks queues is that they could still be hitting
the same nodes on the network. Maybe just a better time slicing algorithm is
what's needed.

On Fri, Sep 10, 2010 at 3:36 PM, Nate Bauernfeind
nate.bauernfe...@gmail.com wrote:

Couldn't you create two task queue's? That should fix the starvation
problem. I suppose the trick would be to determine which queue to stick it
on.

On Fri, Sep 10, 2010 at 1:15 PM, Ikai L (Google) ika...@google.comwrote:

I think one thing we can do better is to schedule some index builds for
apps with no data ahead of apps with a lot of data, since they are
essentially no-ops. Of course, one wonders if this means large index builds
will be delayed forever? *rubs hands together for Computer Science fun*

On Thu, Sep 9, 2010 at 7:11 PM, Jeff Schwartz
jefftschwa...@gmail.comwrote:

Soon after I posted the issue it was fixed. I don't know how or by whom
but somehow it got resolved. I waited a few hours for the index to build
even though there was no data to which the index was referring to. Thank
you, Ikai.

On Thu, Sep 9, 2010 at 9:39 PM, Ikai L (Google) ika...@google.comwrote:

The indexes all look to be serving to me.

On Thu, Sep 9, 2010 at 2:07 PM, Jeff Schwartz jefftschwa...@gmail.com
wrote:

I have 1 index that was building for quite a while though there was no
data associated with the index. When I clicked on the Datastore Indexes
link
in the admin console I am directed to a error page that says:

Server Error (500)

A server error has occurred.

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

My application's id is i-emote and its version is 1.

Can anyone fix this for me and as soon as posible? Thanks in advance.

Jeff

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Re: [google-appengine] Re: Should I switch to the low level datastore api?

2010-09-10 Thread Ikai L (Google)

I think I can't type today. What I meant to say in my first email was there
may be some performance benefit by switching to the low-level API, but the
overhead introduced by JDO/JPA should be minimal in terms of queries and
writes.

On Fri, Sep 10, 2010 at 1:50 PM, gholler georgehol...@gmail.com wrote:

I'm on a team that built a JDO app engine project that was fairly slow
and then built a similar project using Objectify. We were very
pleased with the performance. We were also careful to only index
fields we queried and also let Objectify doing caching for us
automatically.

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Re: [appengine-java] Replace an object in the datastore with another not currently in the datastore?

2010-09-09 Thread Ikai L (Google)

With the low-level API, you would just set the Key of the old object to the
one one and persist it. With managed persistence via PersistenceManager or
EntityManager, I believe you can set a key and merge (but I'm not sure off
the top of my head).

On Wed, Sep 8, 2010 at 12:43 PM, Shaun shaunc...@gmail.com wrote:

 This might be very obvious, but imagine you have an object in the
 datastore that you simply want to to replace with another, i.e. keep
 the same key, just replace all the field values. Is there any easy way
 to do this without setting each field value of the datastore object
 with field values of the other object?

 As an example I find myself doing this alot:

 ExpenseEntry lJsonExpenseEntry = gson.fromJson(pExpenseEntryJson,
 ExpenseEntry.class);
ExpenseEntry lExpenseEntry =
 pm.getObjectById(ExpenseEntry.class,
 expenseKey);


 lExpenseEntry.setExpenseamount(lJsonExpenseEntry.getExpenseamount());

 lExpenseEntry.setExpensecategory(lJsonExpenseEntry.getExpensecategory());

  lExpenseEntry.setExpensedate(lJsonExpenseEntry.getExpensedate());

  lExpenseEntry.setExpensename(lJsonExpenseEntry.getExpensename());

  lExpenseEntry.setExpensenotes(lJsonExpenseEntry.getExpensenotes());

  lExpenseEntry.setExpenseuser(lJsonExpenseEntry.getExpenseuser());

  lExpenseEntry.setProjectid(lJsonExpenseEntry.getProjectid());

 in order to update the datastore object, ideally I could do this all
 in a few lines by simply replacing the current datastore object with
 the new one. Maybe just removepersistence and then add it again?
 Thanks for the thoughts.

 Shaun

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Re: [appengine-java] Re: App Engine and Google Apps

2010-09-09 Thread Ikai L (Google)

There's no document (we are working on a general document for security,
audit processes, etc), but we do not make the statement that we are not
HIPAA compliant. I want to offer a quick disclaimer that I am not in a
position to make any legal statements, so if there are any specifics you
wish you discuss we can take this off list and I can point you to our legal
team.

On Thu, Sep 9, 2010 at 3:13 AM, Frederik Pfisterer pfiste...@gmail.comwrote:

Hi Ikai,

can you give a pointer to a document that states what rules and
regulations GAE complies to?
e.g. where did you state the noncompliance to HIPAA? What does Google
prevent from complying?

Thanks,
Fred

On 8 Sep., 20:13, Ikai L (Google) ika...@google.com wrote:
Yes, you can partition by namespace on domain. You shouldn't need OpenID
to
get this to work.

Just be aware that we've stated in the fact we are not HIPAA compliant:

http://www.hhs.gov/ocr/privacy/

Check with your legal counsel before proceeding.

On Wed, Sep 8, 2010 at 9:42 AM, Vishal Singh singh.vi...@gmail.com
wrote:
This is my use case. We are building a health care solution using App
Engine. The idea is people would be able to add the health care app
engine solution in their Google App Domain. The health care app engine
solution will be able to differentiate there request from different
Google Apps and store data using the new multi-tenancy NameSpace
features. In short one deployment being accessed by multiple Google
Apps and data partitioned according to name space. Is this possible ?

As I understand one would need to get openid authentication working
for Google Apps as Gmail Option or Google Apps authentication will not
help me in my above mentioned scenario.

If one gets open id working for Apps can there be one deployment of
app engine serving multiple Google Apps user ? A clear answer will
help

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Re: [appengine-java] Help: How to enable src auto-update in eclipse using app engine plugin for eclipse?

2010-09-09 Thread Ikai L (Google)

Is your server running in debug mode? Most classes should be hot reloadable.
You'll still need to restart your server for web.xml changes.

On Thu, Sep 9, 2010 at 12:56 AM, Felix longbiaoc...@gmail.com wrote:

Hello, guys. I'm using Google App Engine 1.3.7 eclipse plugin with
eclipse 3.5 on a Windows 32bit machine. It works great for me to
develop Java servlets and serve them at localhost. However, whenever I
modify the servlet source, I've to stop the previously running
instances of app engine at localhost, and then restart it to see
changes in my browser. If not, the changes will not take effect.
I'm wondering whether anyone eles have encountered this problem ever,
and thank you very much for digging into this post:)

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Re: [google-appengine] Re: Static resources not updated?

2010-09-09 Thread Ikai L (Google)

Are you using a YAML file configuration for static assets? There's a place
to set expires times. At any rate, next time this happens, take note of the
headers returned and post them.

As a best practice, in your URLs to your static assets, you should have
cache busters since this'll also cover the case of folks with weird local
browser cache settings.

On Thu, Sep 9, 2010 at 12:49 AM, Tonny 12br...@gmail.com wrote:

 This could what was happening, since the new files was available after
 5-10 minuttes (as mentioned i used curl to look). I have no customized
 expire times though.

 On Sep 8, 10:26 pm, Peter Petrov onest...@gmail.com wrote:
  This generally happens when you set a custom expiration time for
  static files. This causes Google's frontend servers to cache the files
  for up to the specified time, and they don't update it even if you
  push a new version in the mean time. This is true both for
  *.appspot.com and for custom domains. You can take a look at the HTTP
  headers returned by your Google Frontend server, e.g. using Firebug,
  to see when the next refresh will happen.
 
  If you don't set custom expiration for static files, the frontend
  servers seem to fetch the resources every time (or at least very
  frequently). On the other hand, the browsers' caching behaviour is
  then undefined. In any case, you should use cache-busters.
 
  On Sep 8, 4:26 pm, Tonny 12br...@gmail.com wrote:
 
 
 
   I did and uploading 10 minuttes, but my static resources has not
   changed when i load them through the webserver?
 
   Does anybody have similar problems currently?
 
   Regards
   Tonny

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Re: [google-appengine] Simultaneous asynchronous URL Fetch calls limit

2010-09-09 Thread Ikai L (Google)

The limit of 10 applies to asynchronous urlfetches in a single request as
describe here:

http://code.google.com/appengine/docs/python/urlfetch/asynchronousrequests.html

That being said, if a large proportion of your requests are making URLFetch
requests and this causes your user facing round trips to be 800ms+, App
Engine will not autoscale the number of instances you have running. It's
best to move these operations to task queues.

On Thu, Sep 9, 2010 at 7:50 AM, IgorNovak beze...@gmail.com wrote:

Hi, I'm new here, so excuse me if my question is a bit dummy

GAE references say that the app can have up to 10 simultaneous
asynchronous URL Fetch calls:
http://code.google.com/appengine/docs/python/urlfetch/overview.html#Requests

I didn't unterstand, does it mean 10 calls for one user request or for
the whole application?

I've made the app that calls several async requests to different
services for one user request. It seems working well but I'm not sure
how it will behave with large number of users.

Thanks

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Re: [google-appengine] Re: Using OR statement in datastore

2010-09-09 Thread Ikai L (Google)

Asynchronous datastore calls are coming in a future release. Stay tuned.

On Thu, Sep 9, 2010 at 11:13 AM, timwhunt timwh...@gmail.com wrote:

 Hey Google folks (Nick?), can you comment on any potential methods for
 asynchronous datastore calls (in Java)?

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Re: [google-appengine] BUSINESS APP OR NOT?

2010-09-09 Thread Ikai L (Google)

Normal pricing. GAE4B pricing applies if you are writing an application that
is only accessible for Google Apps (Gmail, Docs) users and not the general
public. Here's an example:

Google App Engine (current)

You create an image sharing service anyone can use.

Google App Engine for Business

You create an expense reporting tool that you want tied to a specific Google
Apps Domain, say, ikaicorp.com that only us...@ikaicorp.com can use. This
application can be administered via the ikaicorp.com domain console.

On Wed, Sep 8, 2010 at 12:15 PM, colin nos...@carter.es wrote:

I am confused by the two pricing policies (app engine for business and
app engine).

I have a small business. I wrote a workflow, invoicing and payment
tracking software using MS Access and VB. It gets accessed about once
a day. It has about six tables and maybe 2000 records among all of
them. I want to put it in a cloud and look forward to learning Python.
In the future maybe three users in different citties will access the
on-line version. If I have time and the application works well, I may
want to create a service we can sell to other companies in our segment
because the app is very useful - especially the invoicing module.

Which pricing policy applies to me?

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Re: [google-appengine] Re: BUSINESS APP OR NOT?

2010-09-09 Thread Ikai L (Google)

No. Login will always be required. It'll be similar to Google Docs for your
domain.

On Thu, Sep 9, 2010 at 1:35 PM, alf alberto@gmail.com wrote:

ok but if your GAE4B is used in a mixed enviroment one part by
internal user @ikaicorp.com and othere part of same applications is
used for other user outside @ikaicorp.com ?

thanks

Google App Engine (current)

You create an image sharing service anyone can use.

Google App Engine for Business

On Wed, Sep 8, 2010 at 12:15 PM, colin nos...@carter.es wrote:
I am confused by the two pricing policies (app engine for business and
app engine).

Which pricing policy applies to me?

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Re: [google-appengine] Index build stuck Server Error 500 when trying to view Datastore Indexes page in admin console

2010-09-09 Thread Ikai L (Google)

The indexes all look to be serving to me.

On Thu, Sep 9, 2010 at 2:07 PM, Jeff Schwartz jefftschwa...@gmail.comwrote:

I have 1 index that was building for quite a while though there was no data
associated with the index. When I clicked on the Datastore Indexes link in
the admin console I am directed to a error page that says:

Server Error (500)

A server error has occurred.

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

My application's id is i-emote and its version is 1.

Can anyone fix this for me and as soon as posible? Thanks in advance.

Jeff

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Re: [google-appengine] Index build stuck Server Error 500 when trying to view Datastore Indexes page in admin console

2010-09-09 Thread Ikai L (Google)

By the way - how long did you wait? There have been a few reports about
index building slowness.

On Thu, Sep 9, 2010 at 6:39 PM, Ikai L (Google) ika...@google.com wrote:

The indexes all look to be serving to me.

On Thu, Sep 9, 2010 at 2:07 PM, Jeff Schwartz jefftschwa...@gmail.comwrote:

Server Error (500)

A server error has occurred.

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

My application's id is i-emote and its version is 1.

Can anyone fix this for me and as soon as posible? Thanks in advance.

Jeff

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Re: [appengine-java] Works in dev, not in prod. Max path length? Illegal characters?

2010-09-08 Thread Ikai L (Google)

This is just a guess, but can you make sure everything is escaped? For
instance, the \' part looks problematic. In general, you want to avoid
issues that can occur from weird naming - it's really not worth your time
debugging these issues when you can just change the path.

On Wed, Sep 8, 2010 at 10:33 AM, App Engine Notifications
appengine.notificati...@google.com wrote:

On Tue, Sep 7, 2010 at 11:55 AM, mstodd toaste...@gmail.com wrote:

I have some css files and images in an oddly named directory that work
fine when developing locally, but produce a 404 in production after
being deployed.

Here's an example of one bad request from my production logs:

GET /ZIM\'S%20Bar%20-%20770%20N%20Milwaukee%20St%20-%20Milwaukee%20WI
%2053202_files/flagheader.jpg HTTP/1.1 404 204 http://
zimsmilwaukee.appspot.com/ Mozilla/5.0 (Windows; U; Windows NT 6.1;
en-US) AppleWebKit/533.4 (KHTML, like Gecko) Chrome/5.0.375.127 Safari/
533.4,gzip(gfe)

Any suggestions?

thanks,
Mark

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Re: [appengine-java] Beating the 1MB datastore restriction

2010-09-08 Thread Ikai L (Google)

Have you taken a look at this?

http://code.google.com/appengine/docs/java/blobstore/overview.html

On Wed, Sep 8, 2010 at 8:02 AM, Rafael Barrera Oro boraf...@gmail.comwrote:

Hello there!

I am trying to implement a basic file sharing service and, as you may
already know, the datastore imposes a 1MB limit for the size of any
blob, i thought that i could bypass this obstacle by spliting the file
into several blobs but found out that the mentioned limit applies for
the whole transaction, in other words, if i split a 10MB blob into ten
1MB blobs i still get the same error when i commit the transaction. I
guess i could try saving each blob in a different transaction but i
such approach is clearly very prone of error.

My classes where the following:

File (holds all the information of a file excepto for its contents)
FilePart (holds a part of the file's contents and a foreign key to the
file the parts belongs to)

My procedure consisted in creating one File and as much FileParts as
necessary, then saving it all inside of a transaction.

Is there a way to increase the max size of the objects in a
transaction or something like that?
Has anyone succeded in beating the 1MB restriction? (i mean without
using another storing service)

thanks in advance!

Rafael

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Re: [appengine-java] App Engine and Google Apps

2010-09-08 Thread Ikai L (Google)

Yes, you can partition by namespace on domain. You shouldn't need OpenID to
get this to work.

Just be aware that we've stated in the fact we are not HIPAA compliant:

http://www.hhs.gov/ocr/privacy/

Check with your legal counsel before proceeding.

On Wed, Sep 8, 2010 at 9:42 AM, Vishal Singh singh.vi...@gmail.com wrote:

This is my use case. We are building a health care solution using App
Engine. The idea is people would be able to add the health care app
engine solution in their Google App Domain. The health care app engine
solution will be able to differentiate there request from different
Google Apps and store data using the new multi-tenancy NameSpace
features. In short one deployment being accessed by multiple Google
Apps and data partitioned according to name space. Is this possible ?

As I understand one would need to get openid authentication working
for Google Apps as Gmail Option or Google Apps authentication will not
help me in my above mentioned scenario.

If one gets open id working for Apps can there be one deployment of
app engine serving multiple Google Apps user ? A clear answer will
help

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Re: [google-appengine] Hi group! My App Engine App is finally launching today.

2010-09-08 Thread Ikai L (Google)

Hey, awesome! Let us know how users end up using it!

On Wed, Sep 8, 2010 at 3:17 AM, Julian Namaro namarojul...@gmail.comwrote:

After a lot of work, and quite a bit of testing, I am happy today to
present you my app.
It's called memobuild, and it's basically an editor for large online
documents (e.g. documentation, reports, e-books).

You can see more information in the entry of the App Gallery:

http://appgallery.appspot.com/about_app?app_id=agphcHBnYWxsZXJ5chQLEgxBcHBsaWNhdGlvbnMY3aBJDA

It's built on top of webapp, and it uses a bit of everything:
transactions, tasks queues, blobstore, federated login,...
Have a look, your feedback is welcome.

Let me take the occasion to congratulate the App Engine team for the
constant improvements of the platform. Thank you, and please, do keep
it up!

Julian Namaro
http://www.memobuild.com

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Re: [google-appengine] Static resources not updated?

2010-09-08 Thread Ikai L (Google)

Can you try using curl or wget? It could be that they are still cached in
your browser.

On Wed, Sep 8, 2010 at 6:26 AM, Tonny 12br...@gmail.com wrote:

 I did and uploading 10 minuttes, but my static resources has not
 changed when i load them through the webserver?

 Does anybody have similar problems currently?

 Regards
 Tonny

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[google-appengine] IRC office hours next week: guests from the Prediction API team

2010-09-08 Thread Ikai L (Google)

Hey everyone,

I just wanted to remind you all that we will be holding IRC office hours
next Wednesday, September 15th from 9am-10am Pacific Time (for everyone
outside this time zone, that's 4pm GMT -
http://www.timezoneconverter.com/cgi-bin/tzc.tzc). Normally, I wouldn't
announce these office hours since they happen once every two weeks. This
upcoming session, however, we will be joined by our friends from the
Prediction API team: http://code.google.com/apis/predict/)! They'll be
around to answer any questions you may have about the API, and rumor has it
they'll have a few invites to give out as well.

For the newer developers in this group, you can find more information about
our IRC office hours here:

http://code.google.com/appengine/community.html

We'll be on the #appengine on irc.freenode.net. If you don't have an IRC
client, you can use the web based client here:

http://webchat.freenode.net/

Happy developing, and we hope to see you next week!


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Re: [appengine-java] building indexes

2010-09-07 Thread Ikai L (Google)

Index building time depends on the amount of data you have as well as all
other indexes being built globally. The index builder is a shared resource.

The best practice is to upload a new staging version before you need it. All
versions share the same datastore, so index building will begin before your
production version goes live (
http://ikaisays.com/2010/07/12/google-app-engine-tips-and-tricks-prebuilding-indexes-using-a-non-default-version/
).

On Fri, Sep 3, 2010 at 8:43 PM, aswath satrasala aswath.satras...@gmail.com
wrote:

Hi,
* What is the normal time taken to build indexes?
* Is it dependent on the volume of data in the app-id?
* When I upload a new version and give some time for building the indexes,
then this means, the app-id will not be in usable state for some time.
* What is the recommended approach to upload a new version and be able to
server the users immediately?

-Aswath
http://vs-accounting.appspot.com

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Re: [appengine-java] Memcache put: Error setting single item

2010-09-07 Thread Ikai L (Google)

Can you post any code?

On Sun, Sep 5, 2010 at 9:37 PM, Subhash subhash.ku...@daffodilsw.comwrote:

 Hi

 I am working on google app engine. I am using memCache for cache my
 data. I am facing following error while using cache:

 com.google.appengine.api.memcache.MemcacheServiceException: Memcache
 put: Error setting single item

 I don't know why this error is coming.

 Any suggestion/help is highly appreciated.

 Subhash

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Re: [appengine-java] Google Apps problem with Google App engine Admin Console Display

2010-09-07 Thread Ikai L (Google)

Try this:

http://appengine.google.com/a/elon.edu

On Mon, Sep 6, 2010 at 1:04 PM, powell...@gmail.com powell...@gmail.comwrote:

Before our university, Elon, went to Google Apps for the students, the
students who had gmail accounts such as d...@gmail.com could easily
request and appengine account, create an application and then have it
displayed in the app engine admin console dashboard. If they went to
http://appengine.google.com and signed in then they were automatically
redirected to the Appengine admin console dashboard to see a list of
their applications.

This summer, the university went to Google Apps for students and the
students have google email accounts but with a university extension.
For example, their student email is now d...@elon.edu and this uses
gmail. When a student uses this google account id of d...@elon.edu, the
student can apply for an appengine account, get the account and then
get prompted for an Application Id. The application gets successfully
created but the admin console dashboard is not displayed. If the
student goes to http://appengine.google.com and signs in as
d...@elon.edu then the student is prompted to create an application
instead of having a list of applications displayed to choose from for
display on the dashboard. The question is how does a student with a
university google docs account access the appengine admin console
dashboard when the account has a @elon.edu university instead of
@gmail.com.

Dave

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Re: [google-appengine] Got an Error while retriving all tuples form an entity

2010-09-07 Thread Ikai L (Google)

Looks like your closed your persistence manager. It'd be more helpful if you
posted some code.

On Sun, Sep 5, 2010 at 10:43 PM, Hari hariac...@gmail.com wrote:

 Uncaught exception from servlet
 Object Manager has been closed
 org.datanucleus.exceptions.NucleusUserException: Object Manager has
 been closed
at
 com.google.appengine.runtime.Request.process-376dbc5a4dfece22(Request.java)
at
 org.datanucleus.ObjectManagerImpl.assertIsOpen(ObjectManagerImpl.java:
 3876)
at
 org.datanucleus.ObjectManagerImpl.getFetchPlan(ObjectManagerImpl.java:
 376)
at org.datanucleus.store.query.Query.getFetchPlan(Query.java:497)
at org.datanucleus.store.appengine.query.DatastoreQuery
 $6.apply(DatastoreQuery.java:631)
at org.datanucleus.store.appengine.query.DatastoreQuery
 $6.apply(DatastoreQuery.java:630)
at

 org.datanucleus.store.appengine.query.LazyResult.resolveNext(LazyResult.java:
 94)
at org.datanucleus.store.appengine.query.LazyResult
 $LazyAbstractListIterator.computeNext(LazyResult.java:215)
at

 org.datanucleus.store.appengine.query.AbstractIterator.tryToComputeNext(AbstractIterator.java:
 132)
at

 org.datanucleus.store.appengine.query.AbstractIterator.hasNext(AbstractIterator.java:
 127)
at org.datanucleus.store.appengine.query.LazyResult
 $AbstractListIterator.hasNext(LazyResult.java:169)
at org.apache.jsp.viewall_jsp._jspService(viewall_jsp.java:49)
at
 org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:806)
at
 org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:
 511)
at org.mortbay.jetty.servlet.ServletHandler
 $CachedChain.doFilter(ServletHandler.java:1166)
at

 com.google.apphosting.utils.servlet.ParseBlobUploadFilter.doFilter(ParseBlobUploadFilter.java:
 97)
at org.mortbay.jetty.servlet.ServletHandler
 $CachedChain.doFilter(ServletHandler.java:1157)
at

 com.google.apphosting.runtime.jetty.SaveSessionFilter.doFilter(SaveSessionFilter.java:
 35)
at org.mortbay.jetty.servlet.ServletHandler
 $CachedChain.doFilter(ServletHandler.java:1157)
at

 com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter(TransactionCleanupFilter.java:
 43)
at org.mortbay.jetty.servlet.ServletHandler
 $CachedChain.doFilter(ServletHandler.java:1157)
at
 org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:
 388)
at
 org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:
 216)
at
 org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:
 182)
at
 org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:
 765)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:
 418)
at

 com.google.apphosting.runtime.jetty.AppVersionHandlerMap.handle(AppVersionHandlerMap.java:
 238)
at
 org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:
 152)
at org.mortbay.jetty.Server.handle(Server.java:326)
at
 org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:
 542)
at org.mortbay.jetty.HttpConnection
 $RequestHandler.headerComplete(HttpConnection.java:923)
at

 com.google.apphosting.runtime.jetty.RpcRequestParser.parseAvailable(RpcRequestParser.java:
 76)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
at

 com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest(JettyServletEngineAdapter.java:
 135)
at
 com.google.apphosting.runtime.JavaRuntime.handleRequest(JavaRuntime.java:
 251)
at com.google.apphosting.base.RuntimePb$EvaluationRuntime
 $6.handleBlockingRequest(RuntimePb.java:6784)
at com.google.apphosting.base.RuntimePb$EvaluationRuntime
 $6.handleBlockingRequest(RuntimePb.java:6782)
at

 com.google.net.rpc.impl.BlockingApplicationHandler.handleRequest(BlockingApplicationHandler.java:
 24)
at com.google.net.rpc.impl.RpcUtil.runRpcInApplication(RpcUtil.java:
 398)
at com.google.net.rpc.impl.Server$2.run(Server.java:852)
at
 com.google.tracing.LocalTraceSpanRunnable.run(LocalTraceSpanRunnable.java:
 56)
at

 com.google.tracing.LocalTraceSpanBuilder.internalContinueSpan(LocalTraceSpanBuilder.java:
 576)
at com.google.net.rpc.impl.Server.startRpc(Server.java:807)
at com.google.net.rpc.impl.Server.processRequest(Server.java:369)
at

 com.google.net.rpc.impl.ServerConnection.messageReceived(ServerConnection.java:
 442)
at
 com.google.net.rpc.impl.RpcConnection.parseMessages(RpcConnection.java:
 319)
at
 com.google.net.rpc.impl.RpcConnection.dataReceived(RpcConnection.java:
 290)
at com.google.net.async.Connection.handleReadEvent(Connection.java:
 474)
at

Re: [google-appengine] your project must be configured to use jdk in order to use jsp

2010-09-07 Thread Ikai L (Google)

A JDK is a Java Development Kit. JRE is a Java Runtime Environment.

You need to install the JDK from here:

http://www.oracle.com/technetwork/java/javase/downloads/index.html



On Tue, Sep 7, 2010 at 4:32 AM, santosh baral scorpiosant...@gmail.comwrote:

 hi everybody,
  i am creating app engine application. everything seems to fine but
 when i add the jsp file to WAR directory, it shows the error message
 as:  you project must be configured to use jdk in order to use
 jsp. ..

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Re: [appengine-java] Re: Uncaught exception from servlet

2010-09-03 Thread Ikai L (Google)

We want to address this and I suspect it will be fixed in one of the next
few upcoming releases, but I don't have an exact ETA.

On Thu, Sep 2, 2010 at 2:44 PM, zachariahyoung zpyo...@gmail.com wrote:

 Ikai,

 I have posted the same issue on the Spring Roo forums.  Below is the
 reply I got from them.

 With the Roo 1.1 M3 release we have changed the way we map the Spring
 DispatcherServlet following Spring Framework improvements. We are also
 using a new MVC resources handler (configured in webmvc-config.xml)
 which allows serving of static resources. Both of these changes allow
 us to remove the need for URL rewriting (which was present in previous
 versions of Roo) while still offering clean RESTful URLs.

 As you have seen this causes some issues on GAE which we are currently
 following up with Google. The main issue for Roo scaffolded MVC
 applications is however the need for JSP 2.1 which GAE currently does
 not support (see https://jira.springframework.org/browse/ROO-1006 for
 details).

 When I review the ROO-1006 issue it is stating that I need to have jsp
 2.1.  See below

 Currently GAE raises a compilation exception of the Roo generated jspx
 files in a GAE environment. The problem is the use of jasper-
 runtime-5.0.28.jar in the current version of GAE alongside geronimo-
 jsp_2.1_spec-1.0.1.jar. This means that GAE have an API which allows
 JSP 2.1 and an implementation of Jasper which only supports JSP 2.0.
 Spring Roo generated MVC apps use a number of JSP 2.1 features (mostly
 EL related) which are supported by all current Web containers but not
 GAE. (see http://code.google.com/p/googleappengine/issues/detail?id=1506)

 As such GAE deployments are currently not supported by Roo generated
 Spring MVC applications. However, we are in contact with Google to
 resolve this issue as soon as possible. As a workaround Roo could ship
 a custom tag library (potentially with reduced functionality) to
 support JSP 2.0 EL.

 Another issue which needs to be resolved is the full support of the
 default GAE data store. This will require changes outlined in ROO-611
 to fully support references between domain objects.

 So question is when will issue
 http://code.google.com/p/googleappengine/issues/detail?id=1506
 be fixed?  I'm guessing that this might be because of the version of
 Jetty GAE for java is running on.

 Any why to get the time line for something like this?  Also when I run
 mvn gwt:run locally it works fine.

 Thanks

 Zach

 On Sep 2, 1:45 pm, Ikai L (Google) ika...@google.com wrote:
  I'm not a Spring Roo expert, but this seems to offer a clue:
 
  java.lang.IllegalStateException: Unable to locate the default servlet
  for serving static content. Please set the 'defaultServletName'
  property explicitly.
 
  Does that property mean anything to you?
 
 
 
 
 
  On Wed, Sep 1, 2010 at 8:11 PM, zachariahyoung zpyo...@gmail.com
 wrote:
   I'm working on trying to get Spring Roo  1.1.0.M3 with Google Web
   Toolkit 2.1.0.M3 working in Google App Engine for Java 1.3.7.  I have
   even had a hard time getting some of the samples to work.  I was hope
   someone could help me with the follow error and direct me on how I
   need to fix it.
 
   Error from GAE.
 
   Uncaught exception from servlet
   javax.servlet.UnavailableException:
   org.springframework.beans.factory.BeanCreationException: Error
   creating bean with name
 
  
 'org.springframework.web.servlet.resource.DefaultServletHttpRequestHandler#
 0':
   Initialization of bean failed; nested exception is
   java.lang.IllegalStateException: Unable to locate the default servlet
   for serving static content. Please set the 'defaultServletName'
   property explicitly.
  at
  
 org.mortbay.jetty.servlet.ServletHolder.makeUnavailable(ServletHolder.java:
   415)
  at
   org.mortbay.jetty.servlet.ServletHolder.initServlet(ServletHolder.java:
   458)
  at
   org.mortbay.jetty.servlet.ServletHolder.doStart(ServletHolder.java:
   263)
  at
   org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:
   50)
  at
  
 org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:
   685)
  at
 org.mortbay.jetty.servlet.Context.startContext(Context.java:140)
  at
   org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:
   1250)
  at
   org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:
   517)
  at
   org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:
   467)
  at
   org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:
   50)
  at
 
  
 com.google.apphosting.runtime.jetty.AppVersionHandlerMap.createHandler(AppV
 ersionHandlerMap.java:
   191)
  at
 
  
 com.google.apphosting.runtime.jetty.AppVersionHandlerMap.getHandler(AppVers
 ionHandlerMap.java:
   168)
  at
 
  
 com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceReques
 t

Re: [appengine-java] image background color changed to red when using imagesservice and blobstoreservice

2010-09-03 Thread Ikai L (Google)

Can you post an example image? I've never seen this happen.

On Fri, Sep 3, 2010 at 7:13 AM, jay jay...@gmail.com wrote:

 Dear All,

 When I used the blobstoreservice and imagesservice to upload a image,
 sometimes, some pictures background were changed to red.

 This happend  in dev enviroment. I havn't check it in product env.


 Does somebody has same problem?


 Jay


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Re: [google-appengine] how to use Fedrated Login for my google apps Engine

2010-09-03 Thread Ikai L (Google)

This doesn't actually require using federated login: your users just have to
go to:

http://mytaskmanager.appspot.com/a/ubob.org

Federated login usually refers to OpenID:

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

On Thu, Sep 2, 2010 at 9:08 PM, Ehsan-ul-haq iehsa...@gmail.com wrote:

i have create my Google Apps on Google Apps Engine (http://
mytasksmanager.appspot.com).

now i want to create a login interface where user can login in with
google and google apps account

i done my Google Account login but i need help how to login with other
Google Apps Accounts like eh...@ubob.org

Thanks

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Re: [google-appengine] Serving Url - invalid crop size valid in production?

2010-09-03 Thread Ikai L (Google)

Hi Peter,

We're trying to figure this out right now. For the time being, it is best to
assume the documentation is correct, as we may restrict the sizes at a
future date.

On Fri, Sep 3, 2010 at 12:30 PM, Peter Liu tinyee...@gmail.com wrote:

Using the latest high performance image serving feature, for the dev
server (java), if the serving image has invalid width or crop width,
it will give error. However when it's in production, the width are not
restricted to the valid sizes.

Valid sizes as documented:

http://code.google.com/appengine/docs/java/javadoc/com/google/appengine/api/images/ImagesService.html#SERVING_SIZES

Invalid in dev:
http://fakehost.com/_ah/img/rKCcon1tsDsyz4SIbNmqIQ=s30-c

Valid in production:

http://lh6.ggpht.com/K_QfosnwRsOu7ScSTd7yoebFFYzYRjv-I6H3mE3PkOtzDOu-v5zpkpL-wmqQv_Yb94w5i9HCxA8QgE7RCG-hHw=s30-c

The above production url shows width of 30 pixel for crop size is
possible, while in dev server it will throw an exception.

Is there any reason why we must constraint ourselves with the
limitation?

If production has no such limit I will go with crop sizes like 30 or
50 instead of 32 and 48.

Thanks!

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Re: [appengine-java] pm.store() failing silently

2010-09-02 Thread Ikai L (Google)

Does this consistently fail every 1/3 times, or at certain times? Not that
it should matter, but how are you creating the PersistenceManager?

On Wed, Sep 1, 2010 at 6:21 PM, John demowee...@gmail.com wrote:

 This one is for App Engine team. Random silent failures, no
 explanation.

 I have a piece of code which only creates an entity and stores it
 with

 public void makeEntity() {
 UserPhoto  photo = new UserPhoto(...);
 this.pm.makePersistent(photo);
 this.pm.close();
 assert photo.key != null; // - fails from time to time

 From time to time, the code above will fail. Maybe once every 3
 times
 (with the same parameters).

 I am assuming that the store() call at the datastore level is failing
 for whatever reason, but it is a silent fail as the code does not
 throw any exception. When this happens I can confirm looking at the
 datastore viewer that the entity was not persisted.
 The size does not seem to matter (fails on 5kb as well as 200 kb).

 I have logs of the app where back to back requests will fail first
 and
 succeeds next, with the exact same payload.

 It would be great if the App Engine team can point to an open bug
 which remotely explains this behavior.

 (the problem was present with 1.3.4 already)

 The entity model is :
 @PersistenceCapable(identityType = IdentityType.APPLICATION,
 detachable = true)
 public class UserPhoto {
@PrimaryKey
@Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
Key key;
@Persistent
Blob photo;
@Persistent
Blob thumbPhoto;
@Persistent
private Key user;
@Persistent
private int size;
@Persistent
private String filename;
@Persistent
private Date date;
@Persistent
private Boolean canDelete;

 I tried persisting the entity with a transaction, and the problem is
 the same.

 This is my jdo-config

   persistence-manager-factory name=transactions-optional
   property name=javax.jdo.PersistenceManagerFactoryClass


 value=org.datanucleus.store.appengine.jdo.DatastoreJDOPersistenceManagerFactory/
 
   property name=javax.jdo.option.ConnectionURL
 value=appengine/
   property name=javax.jdo.option.NontransactionalRead
 value=true/
   property name=javax.jdo.option.NontransactionalWrite
 value=true/
   property name=javax.jdo.option.RetainValues value=true/
   property name=datanucleus.appengine.autoCreateDatastoreTxns
 value=true/
   property name=datanucleus.DetachOnClose value=true/
   /persistence-manager-factory

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Re: [appengine-java] Uncaught exception from servlet

2010-09-02 Thread Ikai L (Google)

I'm not a Spring Roo expert, but this seems to offer a clue:

java.lang.IllegalStateException: Unable to locate the default servlet
for serving static content. Please set the 'defaultServletName'
property explicitly.

Does that property mean anything to you?

On Wed, Sep 1, 2010 at 8:11 PM, zachariahyoung zpyo...@gmail.com wrote:

 I'm working on trying to get Spring Roo  1.1.0.M3 with Google Web
 Toolkit 2.1.0.M3 working in Google App Engine for Java 1.3.7.  I have
 even had a hard time getting some of the samples to work.  I was hope
 someone could help me with the follow error and direct me on how I
 need to fix it.

 Error from GAE.

 Uncaught exception from servlet
 javax.servlet.UnavailableException:
 org.springframework.beans.factory.BeanCreationException: Error
 creating bean with name

 'org.springframework.web.servlet.resource.DefaultServletHttpRequestHandler#0':
 Initialization of bean failed; nested exception is
 java.lang.IllegalStateException: Unable to locate the default servlet
 for serving static content. Please set the 'defaultServletName'
 property explicitly.
at
 org.mortbay.jetty.servlet.ServletHolder.makeUnavailable(ServletHolder.java:
 415)
at
 org.mortbay.jetty.servlet.ServletHolder.initServlet(ServletHolder.java:
 458)
at
 org.mortbay.jetty.servlet.ServletHolder.doStart(ServletHolder.java:
 263)
at
 org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:
 50)
at
 org.mortbay.jetty.servlet.ServletHandler.initialize(ServletHandler.java:
 685)
at org.mortbay.jetty.servlet.Context.startContext(Context.java:140)
at
 org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:
 1250)
at
 org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:
 517)
at
 org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:
 467)
at
 org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:
 50)
at

 com.google.apphosting.runtime.jetty.AppVersionHandlerMap.createHandler(AppVersionHandlerMap.java:
 191)
at

 com.google.apphosting.runtime.jetty.AppVersionHandlerMap.getHandler(AppVersionHandlerMap.java:
 168)
at

 com.google.apphosting.runtime.jetty.JettyServletEngineAdapter.serviceRequest(JettyServletEngineAdapter.java:
 123)
at
 com.google.apphosting.runtime.JavaRuntime.handleRequest(JavaRuntime.java:
 251)
at com.google.apphosting.base.RuntimePb$EvaluationRuntime
 $6.handleBlockingRequest(RuntimePb.java:6784)
at com.google.apphosting.base.RuntimePb$EvaluationRuntime
 $6.handleBlockingRequest(RuntimePb.java:6782)
at

 com.google.net.rpc.impl.BlockingApplicationHandler.handleRequest(BlockingApplicationHandler.java:
 24)
at com.google.net.rpc.impl.RpcUtil.runRpcInApplication(RpcUtil.java:
 398)
at com.google.net.rpc.impl.Server$2.run(Server.java:852)
at
 com.google.tracing.LocalTraceSpanRunnable.run(LocalTraceSpanRunnable.java:
 56)
at

 com.google.tracing.LocalTraceSpanBuilder.internalContinueSpan(LocalTraceSpanBuilder.java:
 576)
at com.google.net.rpc.impl.Server.startRpc(Server.java:807)
at com.google.net.rpc.impl.Server.processRequest(Server.java:369)
at

 com.google.net.rpc.impl.ServerConnection.messageReceived(ServerConnection.java:
 442)
at
 com.google.net.rpc.impl.RpcConnection.parseMessages(RpcConnection.java:
 319)
at
 com.google.net.rpc.impl.RpcConnection.dataReceived(RpcConnection.java:
 290)
at com.google.net.async.Connection.handleReadEvent(Connection.java:
 474)
at

 com.google.net.async.EventDispatcher.processNetworkEvents(EventDispatcher.java:
 831)
at
 com.google.net.async.EventDispatcher.internalLoop(EventDispatcher.java:
 207)
at com.google.net.async.EventDispatcher.loop(EventDispatcher.java:
 103)
at
 com.google.net.rpc.RpcService.runUntilServerShutdown(RpcService.java:
 251)
at com.google.apphosting.runtime.JavaRuntime
 $RpcRunnable.run(JavaRuntime.java:418)
at java.lang.Thread.run(Thread.java:636)

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Re: [google-appengine] Sending SMS

2010-09-02 Thread Ikai L (Google)

Google Calendar sends messages via email, right? Or do you mean a different
service?

On Thu, Sep 2, 2010 at 1:08 AM, Jaroslav Záruba
jaroslav.zar...@gmail.comwrote:

 Is it possible to send messages using the same service Google Calendar
 sends event reminders with? Are there any plans to offer that as a
 service on GAE?

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Re: [google-appengine] Re: Having lots of DeadlineExceeded errors (, lack of any communication on this has my management questioning the wisdom of adopting appengine)

2010-09-02 Thread Ikai L (Google)

Jason, what are you doing in your handler that is hitting
DeadlineExceededError? It looks like you're doing an URLFetch. Could the
resources you are fetching be slow?

On Thu, Sep 2, 2010 at 8:38 AM, Jason C jason.a.coll...@gmail.com wrote:

 I should have mentioned that in addition to the 30s DEEs, we are also
 seeing a number of the 10s Request was aborted messages (the ones
 that occur before any user code executes).

 j

 On Sep 2, 9:32 am, Jason C jason.a.coll...@gmail.com wrote:
  It may have settled down for you Tim, but we are being hammered by
  DeadlineExceededError right now. Log time: 8.27a Thursday 2010-09-02
 
  AppID: steprep
 
  In the past, this problem seems to be localized to small (presumably)
  clusters of apps.
 
  Can someone please look into our specific cluster?
 
  Thanks,
  j
 
  On Sep 1, 6:06 pm, Tim Hoffman zutes...@gmail.com wrote:
 
 
 
   Hi
 
   It seems that the massive increase startup times has settled down.
 
   But we effectively had to app instances down for about 16 hours due to
   the issue.
   It is clear the startup peformance issue is not my code as it was
   affecting a other people, but
   was not widespread enough to get on the system status radar.
 
   And issue for it was raisedhttp://
 code.google.com/p/googleappengine/issues/detail?id=3667
 
   The outage was not good but to be honest the biggest problem my
   management hand with it
   was the complete absence of any response from google during this
   period.
 
   Last time we had a major issue it took a week, and a large report
   prepared by myself detailing what was
   going on before I could get any response from google. The response was
   also
   limited to This is a known issue, we are working to address it which
   is fine in it self at least some communication
   was eventually made but it should not have taken a week and about 3
   days of effort on my part to actually get any form of response.
 
   See the final part of that saga here.
 http://groups.google.com.au/group/google-appengine/browse_thread/thre...
 
   I am huge advocate of appengine and we are using it more and more, but
   the total feeling of helplessness you
   get when you have instances non functioning because they can't even
   startup for an extended period and
   no feedback what so ever makes it very hard to even manage
   expectations, and impossible to report to management
   about any form of progress in resolving the issue.
 
   In addition  when this happened last time, a journalist from the
   Register contacted me about the issue and asked for more information
   so they could do a story about the lack of communication from google
   on these sorts of issues. I declined, but maybe it does need some
   more visibility and least with in the app engine user community.
 
   Regards
 
   Tim Hoffman
 
   On Sep 1, 11:54 pm, Tim Hoffman zutes...@gmail.com wrote:
 
The rate of errors has dropped off somewhat.
 
It is still happening though.
 
T
 
On Sep 1, 7:24 pm, Tim Hoffman zutes...@gmail.com wrote:
 
 Further investigation shows these excessive startup times are being
 experienced by more than one instance.
 
 Appid's qtrack-dev, q-tracker.
 
 T
 
 On Sep 1, 5:15 pm, Tim Hoffman zutes...@gmail.com wrote:
 
  Hi
 
  I am still having trouble getting instances to get past initial
  import  (appid q-tracker)
 
  I have even tried starting old versions to get around failed
 imports.
 
  for the last 10 minutes all startup attempts end in
 DeadlineExceeded
  error.
 
  T
 
  On Sep 1, 2:45 pm, Tim Hoffman zutes...@gmail.com wrote:
 
   Hi
 
   As I have pointed out in the past  its quite possible to get
 pockets
   of appengine  instances experiencing extremely poor performance
 and
   this doesn't show up in the system status.  (http://
  
 groups.google.com.au/group/google-appengine/browse_thread/thread/
   23e988d494144242/8ff964f7ffcc0b37?q=#8ff964f7ffcc0b37)
 
   Apps seemd to be sharded into different parts of appengine
   infrastructure based on appid.
 
   I hope this problem is just transitory for tosay and I don't
 have to
   spend days collecting evidence again.
 
   T
 
   On Sep 1, 2:30 pm, Tim Hoffman zutes...@gmail.com wrote:
 
Hi
 
Except it isn't. I am still getting hit with extremeley long
 startup
times.
I am not even getting around to accessing the datastore.
  Failure is
always during instance startup.
 
T
 
On Sep 1, 2:27 pm, Andi Albrecht 
 albrecht.a...@googlemail.com wrote:
 
 Sorry, I've missed this announcement on Downtime Notify:
 

 http://groups.google.com/group/google-appengine-downtime-notify/brows...
 
 As noted in my previous post, everything's fine now :)
 
 Andi
 
 Tim Hoffman zutes...@gmail.com writes:
  Hi
 
  I am still seeing them on and off, everything might

Re: [google-appengine] user setting file

2010-09-02 Thread Ikai L (Google)

You can use init-params in servlets:

http://www.exampledepot.com/egs/javax.servlet/GetInit.html

You can also use properties files:

http://www.javaworld.com/javaworld/javaqa/2003-08/01-qa-0808-property.html

Another alternative is to make the configurations datastore configurations
and have your application read them on startup.

On Thu, Sep 2, 2010 at 9:51 AM, Benjamin bsaut...@gmail.com wrote:

Hey guys

I want to distribute my apps WAR directory to my users so they can
deploy and run their own instances of my app on their own app engine
account. That is, they download a zipped copy of my WAR directory,
create an app on app engine, edit web.xml and deploy it themselves
using the sdk.

I want them to be able to customize the app using a configuration file
but i'm not sure how to do this. Can i keep other settings in web.xml
and if so how do I pull them out in my java code?

in short - how do i access app settings in my java code.

thanks!

--
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Re: [google-appengine] user setting file

2010-09-02 Thread Ikai L (Google)

You can use init-params in servlets:

http://www.exampledepot.com/egs/javax.servlet/GetInit.html

You can also use properties files:

http://www.javaworld.com/javaworld/javaqa/2003-08/01-qa-0808-property.html

Another alternative is to make the configurations datastore configurations
and have your application read them on startup.

On Thu, Sep 2, 2010 at 9:51 AM, Benjamin bsaut...@gmail.com wrote:

Hey guys

I want them to be able to customize the app using a configuration file
but i'm not sure how to do this. Can i keep other settings in web.xml
and if so how do I pull them out in my java code?

in short - how do i access app settings in my java code.

thanks!

--
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Re: [google-appengine] Host client's web sites.

2010-09-02 Thread Ikai L (Google)

The terms don't forbid you from building a service and selling it to users.
That clause you are referring to is specifically there to prevent people
from layering a thin skin over App Engine and reselling it. We do not forbid
(we encourage, actually) anyone from starting a business for App Engine
consulting, support or management. What you're describing sounds like
something we're more than happy to have people do on GAE.

On Thu, Sep 2, 2010 at 1:09 AM, Kurtis kurtis.mull...@gmail.com wrote:

Hello,

I love developing with Python and have recently started my own little
app on here to see what everyone has been bragging about. So far, I
love this system.

As I graduate from school, I want to start focusing on professional
web development. I'm in the process of comparing different
technologies to build some expertise in before I really 'put myself
out there'. One of the main technologies I'm looking into now is
Google's App Engine.

My question is, can I use Google App Engine to host customer's web
sites? Also, what are the limitations on charging for services such as
setting up the service, making sure they don't go over quota, charging
for development, etc...? In the policies document it says that we can
not Sell, trade, resell or otherwise exploit the Service for any
unauthorized commercial purpose;

I'm not trying to hide what I do for a living. I would be happy to pay
(a reasonable cost) so that it is a legitimate commercial purpose.

Any suggestions on the current policies, procedures, and information
pertaining to this subject would be greatly appreciated.

Thank you,
-Kurtis

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Re: [google-appengine] Datastore viewer query by key.

2010-09-02 Thread Ikai L (Google)

Try this:

SELECT * FROM entity where __key__ = KEY('string-key')

See the section about Keys here:

http://code.google.com/appengine/docs/python/datastore/gqlreference.html

On Thu, Sep 2, 2010 at 10:28 AM, John Gardner hux...@gmail.com wrote:

 This is probably obvious, but:
 I cannot for the life of me figure out how to fetch a known entity by
 key in the viewer.

 The GQL reference doesn't specify key syntax, since you can do a
 db.get(key) from code.

 I've tried:
 SELECT * FROM entity where __key__ = string-key
 SELECT * FROM entity where entity.__key__ = string-key
 SELECT * FROM entity where entity.key = string-key
 SELECT * FROM entity where entity = string-key
 and the same without quotes.

 This really should be easier, I think.

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Re: [google-appengine] stuck indexes

2010-09-02 Thread Ikai L (Google)

They've been placed into error. Go ahead and run vacuum on them.

On Wed, Sep 1, 2010 at 7:32 PM, Yi yig...@gmail.com wrote:

 Hello,

 I got stuck indexes in my app 4create.appspot.com. can someone please
 help me clean them up?

 Thanks

 Yi

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[appengine-java] How to use Google Plugin for Eclipse with Maven

2010-09-01 Thread Ikai L (Google)

Hey everyone,

We've been trying to do better with regards to our Maven support. One of the
members of my team, David Chandler, wrote this blog post about using GPE
with Maven:

http://googlewebtoolkit.blogspot.com/2010/08/how-to-use-google-plugin-for-eclipse.html

There's a bit about App Engine. Let us know how this works for you guys!

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Re: [appengine-java] Non-blocking HTTP Connection with httpcore-nio?

2010-09-01 Thread Ikai L (Google)

I'm guessing no. It probably uses classes not available here:

http://code.google.com/appengine/docs/java/jrewhitelist.html

You're not making outbound HTTP calls from your app instance; you're calling
an API that uses Google's URLFetching infrastructure.

On Wed, Sep 1, 2010 at 7:41 AM, apple apple...@gmail.com wrote:

Can httpcore-nio (with minimal modification) be used in GAE
applications? I would like to port my application (with httpcore-nio)
to run on GAE. It will cost me a lot of time rewriting all connection
codes to URLFetch. I'd rather not doing this unless it is necessary.

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Re: [google-appengine] I made a simple demo use of the GAE Blobstore and GWT to test it out.

2010-09-01 Thread Ikai L (Google)

Awesome! Here's my demo/learning/testing app:

http://github.com/ikai/gwt-gae-image-gallery

Please excuse the spaghetti code all over the place passing LoginInfo around
in the GWT client code.

On Tue, Aug 31, 2010 at 11:51 PM, branflake2267 branflake2...@gmail.comwrote:

 Hi,

 http://demofileuploadgae.appspot.com/ - My simple demo of the use of
 the Blobstore and GWT. I'm pretty impressed at how well it works!

 http://code.google.com/p/gwt-examples/source/browse/trunk/DemoUpload/
 - GWT GAE project source for the demo.

 I figured out how to use the low level api to query the __BlobInfo_
 entities so I could return a list. More custom filters could be added
 to drill down your list of blobs that you have in the store. Also,
 with GWT you have to use an rpc call to get init a url for file
 upload, so the servlet knows what to do with it.

 Brandon Donnelson
 http://gwt-examples.googlecode.com


 Worth noting:

 http://code.google.com/p/gwt-examples/source/browse/trunk/DemoUpload/src/org/gonevertical/upload/server/BlobInfoJdo.java
 - source for below
 public BlobData[] getBlobs(BlobDataFilter filter) {

Entity[] entities = null;
try {
  DatastoreService datastore =
 DatastoreServiceFactory.getDatastoreService();
  PreparedQuery pq = datastore.prepare(new Query(__BlobInfo__));
  ListEntity entList =
 pq.asList(FetchOptions.Builder.withLimit((int)
 filter.getRangeFinish()).offset((int) filter.getRangeStart()));

  entities = new Entity[entList.size()];
  entList.toArray(entities);

} finally {
  pm.close();
}

BlobData[] blobData = convert(entities);

return blobData;
  }

  private BlobData[] convert(Entity[] es) {
if (es == null || es.length == 0) {
  return null;
}

BlobData[] b = new BlobData[es.length];
for (int i=0; i  es.length; i++) {

  MapString, Object p = es[i].getProperties();

  long id = es[i].getKey().getId();
  Key key = es[i].getKey();
  String ct = (String) es[i].getProperty(content_type);
  String fn = (String) es[i].getProperty(filename);
  Long size = (Long) es[i].getProperty(size);
  Date creation = (Date) es[i].getProperty(creation);

  b[i] = new BlobData();
  b[i].setKey(key.getName());
  b[i].setContentType(ct);
  b[i].setFilename(fn);
  b[i].setSize(size);
  b[i].setCreation(creation);

}

return b;
  }

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Re: [google-appengine] Re: Forced to reverify account, which fails

2010-09-01 Thread Ikai L (Google)

Can you fill out the SMS issues form?

https://appengine.google.com/waitlist/sms_issues

There are plans to roll out paid support. Our target is Q4:

http://code.google.com/appengine/business/roadmap.html

On Wed, Sep 1, 2010 at 3:57 AM, Eric wolter.e...@gmail.com wrote:

Is there anyway to get support here except these groups?

On Aug 31, 10:53 am, Eric wolter.e...@gmail.com wrote:
Hi,

this is the text I tried to submit via the Can't receive SMS help
forms, but this again gave me an error as the comments section contain
an error when entering this text?!?

---
This is probably not an issue with my mobile carrier but with app
engine itself. I already successfully created a project, which I can
access, upload to and everything. But now I wanted to create a second
project. The first weird things that it says 'You have 10 applications
remaining.' even though I already have a running project. If I now try
to create another project it redirects me to the SMS verification
page. If I enter my mobile number and submit it. I get the following
error message 'The phone number has been sent too many messages or has
already been used to confirm an account.' Which indeed is true,
because IT IS the same account which is already verified.

Please correct this issue.

Thanks
---

Thanks for helping!
Eric

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Re: [google-appengine] Re: MapReduce: any way to get the value of counters easily?

2010-09-01 Thread Ikai L (Google)

Yeah, the blog is here:

http://ikaisays.com/2010/07/09/using-the-java-mapper-framework-for-app-engine/

I would look in the source:

http://code.google.com/p/appengine-mapreduce/source/browse/#svn/trunk/python

Nick Johnson has Python code samples, but I don't think he has an example of
a callback handler:

http://blog.notdot.net/2010/05/Exploring-the-new-mapper-API

On Wed, Sep 1, 2010 at 4:01 AM, mac macwa...@gmail.com wrote:

Oh, I think you're referring to Java version while I'm using Python.
So I can't use these concise APIs.

On Sep 1, 6:14 pm, mac macwa...@gmail.com wrote:
Hi Ikai,

It's quiet useful. But I can't find the definition of MapReduceState
and method getMapReduceStateFromJobID() in the model.py.

I'm using mapreduce version 100 now. I think it's the latest one.

BTW, what was the blog? It seems I can learn something from it. Can
you share it? Thanks!

Regards,
Mac

On Sep 1, 3:27 am, Ikai L (Google) ika...@google.com wrote:

Here's how you'd get the counter value (excuse the comments, this is
copied
and pasted from a blog post):

MapReduceState mrState = MapReduceState.getMapReduceStateFromJobID(
datastore, jobId);

// There's a bit of ceremony to get the actual
counter. This
// example is intentionally verbose for
clarity. First get all the
// Counters,
// then we get the CounterGroup, then we get
the Counter, then we
// get the count.
Counters counters = mrState.getCounters();
CounterGroup counterGroup =
counters.getGroup(CommentWords);
Counter counter =
counterGroup.findCounter(count);
long wordCount = counter.getValue(); //
Finally!

On Sun, Aug 29, 2010 at 12:20 AM, mac macwa...@gmail.com wrote:
Hi,

I tried to use MapReduce (http://code.google.com/p/appengine-
mapreduce/) to do some jobs in my project.

I am wondering how get the value of the counters?

It seems that it is stored in the counters_map field in
MapreduceState
and it's in JSON format.

Is it the correct way to grab the value by read and parse it from
MapreduceState directly?

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Re: [appengine-java] Re: problem using limits and offsets with App Engine Low Level API

2010-08-31 Thread Ikai L (Google)

Hi Tom,

Have you looked into cursors?

http://code.google.com/appengine/docs/java/datastore/queriesandindexes.html#Query_Cursors

On Sat, Aug 28, 2010 at 9:49 AM, tomkarren tkar...@gmail.com wrote:

I read that pagination has an unpublished limit of 2000. Anyone know
it that's still true? Seems to be the case in my testing.. This
breaks my app? Can anyone help?

On Aug 25, 10:09 pm, tomkarren tkar...@gmail.com wrote:
Hi,

I'm attempting to iterate through a large number of entities (3000)
using limits and offsets. On the first pass my limit is 500 and my
offset is 0. I get 500 results.

On the second pass with limit 500 and offset 500, I get 500 results.
This approach seems to work ok until I get to limit 500 with offset
1500. On that pass, I get 1000 results, which seems pretty strange
given I set a limit of 500.

Code Snippet:
DatastoreService ds = DatastoreServiceFactory.getDatastoreService();
IterableEntity results = (IterableEntity)
ds.prepare(query).asIterable(withLimit(500).offset(1500));
for (Entity result : results){

Any input would be appreciated.

Thanks,

-Tom

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Re: [appengine-java] Unable to upload application through eclipse3.5

2010-08-31 Thread Ikai L (Google)

The reason this is failing is because your url-patterns don't match this
regular expression (http://www.regular-expressions.info/tutorial.html):

'^(?!\^)/|\.|(\(.).*(?!\$).$'

Start your urls with a / or .* (catch all)

On Sat, Aug 28, 2010 at 10:35 AM, Saurabh Saxena
saurabhsaxena.saur...@gmail.com wrote:

Hi All,

Can anybody let me know how long it takes to get google app enigne account
activated.I have created two application ids one week back and till date i
havent received any mail from google about my account activation.

I am not able to upload application using eclipse 3.5 deploy option.I am
getting the following error message
Unable to assign value 'editInfo' to attribute 'url':Value 'editInfo' for
key url does not match expression '^(?!\^)/|\.|(\(.).*(?!\$).$'

Kindly help me out in this issue, please find attached web.xml file used.

Thanks in advance.

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Re: [google-appengine] MapReduce: any way to get the value of counters easily?

2010-08-31 Thread Ikai L (Google)

Here's how you'd get the counter value (excuse the comments, this is copied
and pasted from a blog post):

MapReduceState mrState = MapReduceState.getMapReduceStateFromJobID(
datastore, jobId);

// There's a bit of ceremony to get the actual counter.
This
// example is intentionally verbose for clarity. First
get all the
// Counters,
// then we get the CounterGroup, then we get the
Counter, then we
// get the count.
Counters counters = mrState.getCounters();
CounterGroup counterGroup =
counters.getGroup(CommentWords);
Counter counter = counterGroup.findCounter(count);
long wordCount = counter.getValue(); // Finally!

On Sun, Aug 29, 2010 at 12:20 AM, mac macwa...@gmail.com wrote:

Hi,

I tried to use MapReduce (http://code.google.com/p/appengine-
mapreduce/) to do some jobs in my project.

I am wondering how get the value of the counters?

It seems that it is stored in the counters_map field in MapreduceState
and it's in JSON format.

Is it the correct way to grab the value by read and parse it from
MapreduceState directly?

--
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Developer Programs Engineer, Google App Engine
Blog: http://googleappengine.blogspot.com
Twitter: http://twitter.com/app_engine
Reddit: http://www.reddit.com/r/appengine

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Re: [google-appengine] Re: Appengine Internal Error

2010-08-31 Thread Ikai L (Google)

Hey everyone,

One of our backend tasks ended up in a bad state that wasn't immediately
detected by our management jobs. These issues should be resolved now - we
saw a spike in error rates and addressed it.


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Re: [appengine-java] CPU bandwidth cost $$ too expensive?

2010-08-30 Thread Ikai L (Google)

That seems a bit high. Can you run AppStats and let us know what you see?

http://code.google.com/appengine/docs/java/tools/appstats.html

On Fri, Aug 27, 2010 at 12:31 PM, akirekadu ashw...@gmail.com wrote:

I wanted to benchmark GAE read performance. Around 10,000 entities are
being fetched from data store. These entities contain 3 properties
name (around 16 chars), description (around 130 chars) and a time-
stamp. Nothing unusually large.

Here's what I see:

On an average it takes around 11 seconds to read 10k entities. Not
sure whether this is considered fast, slow or reasonable, but it is
not too exciting regardless.

More interesting find is the CPU metering. Performing this read
operation 100 times consumes about 3.0 CPU hours. The cost is $0.30.

Given there is no CPU intensive algorithm going on here, doesn't it
make GAE's CPU bandwidth quite expensive? (sure, it comes with 24/7
sys-admins in the form of Python scripts etc etc, but still...)

Or is this something in my Java code:

http://github.com/akirekadu/GAE-Evaluation/blob/master/show.jsp

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[appengine-java] App Engine SDK 1.3.7 bugfix release

2010-08-30 Thread Ikai L (Google)

Hey everyone,

I just wanted to let you all know that we're releasing a bugfix release,
1.3.7. You can see our blog post here:

http://googleappengine.blogspot.com/2010/08/app-engine-137-sdk-bugfix-release.html

There are two issues this release addresses:

- Python SDK will correctly assign a namespace based on a Google Apps domain
- Java SDK will not longer throw a SecurityException  (
http://code.google.com/p/googleappengine/issues/detail?id=3598)

You can find this release on our downloads page:

http://code.google.com/appengine/downloads.html

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[google-appengine] App Engine SDK 1.3.7 bugfix release

2010-08-30 Thread Ikai L (Google)

Hey everyone,

I just wanted to let you all know that we're releasing a bugfix release,
1.3.7. You can see our blog post here:

http://googleappengine.blogspot.com/2010/08/app-engine-137-sdk-bugfix-release.html

There are two issues this release addresses:

- Python SDK will correctly assign a namespace based on a Google Apps domain
- Java SDK will not longer throw a SecurityException  (
http://code.google.com/p/googleappengine/issues/detail?id=3598)

You can find this release on our downloads page:

http://code.google.com/appengine/downloads.html

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Re: [appengine-java] How to do update Statement in GQL for Java

2010-08-26 Thread Ikai L (Google)

GQL is read only. You need to use the datastore API for write operations:

http://code.google.com/appengine/docs/python/datastore/creatinggettinganddeletingdata.html

On Wed, Aug 25, 2010 at 8:10 PM, TP Project TP Project 
tpmpproj...@gmail.com wrote:

 Hi can any1 teach me how to use update statement in GQL??


 thanks in advance

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Re: [appengine-java] Creating unique ID for child Key with given parent Key

2010-08-26 Thread Ikai L (Google)

You might want to have a look at this:

http://code.google.com/appengine/docs/java/javadoc/com/google/appengine/api/datastore/DatastoreService.html#allocateIds(com.google.appengine.api.datastore.Key,
java.lang.String, long)

You can specify a parent and allocate IDs. The only caveat is that these may
not be guaranteed to be sequential: just unique.

On Wed, Aug 25, 2010 at 4:24 AM, markus mar...@markuspetersen.dk wrote:

 Hello all!

 I have a datastore class User, which has a property key of type Key
 as its primary key.

 Now, I want to store objects of type Result in the datastore, as
 children of the User in an unowned relationship. Each result has a
 property key of type Key as its primary key as well.

 For creating the key of the child, I currently use the
 Key.getChild(String kind, String name) method on the parent key (see

 http://code.google.com/appengine/docs/java/javadoc/com/google/appengine/api/datastore/Key.html#getChild%28java.lang.String,%20java.lang.String%29
 ),
 specifically like this:

 Key key = user.getKey().getChild(Result.class.getSimpleName(),
 UUID.randomUUID().toString());

 The problem is, I'm quite sure that the UUID class doesn't guarantee
 uniqueness in a distributed setting like GAE. Is there a way to
 generate a unique name here, or preferably let the datastore handle
 uniqueness? Like a Key.getChild(String kind) method.

 Regards,
 Markus

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Re: [google-appengine] getServingUrl slow itself?

2010-08-26 Thread Ikai L (Google)

Only the initial call to getServingUrl should be slow. Subsequent calls
should be faster. You should be able to cache the URL - I don't believe it
should change.

On Thu, Aug 26, 2010 at 4:02 PM, mathijs math...@gmail.com wrote:

Hi,

We have been starting to use getServingUrl on http://www.appbrain.com/
where we have very many pages little icons. (for instance about 30 on
the homepage).
Since we implemented the getServingUrl calls for these icons, the logs
show that the homepage now takes 3000ms (3 seconds!) to be processed
by appengine. It seems that the getServingUrl calls itself are very
slow.
We are now trying to cache these calls, but are unsure how long these
URLs exist. Can we assume that as long as we don't delete the blob,
the same URL will always be valid, or can it change?

Best regards,

Mathijs

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Re: [google-appengine] How do I use get_serving_url correctly?

2010-08-26 Thread Ikai L (Google)

Yes, you can cache the result. In practice, subsequent calls of
get_serving_url on the same blob should be faster, but if you have more new
blobs than old ones on a page it can be slow. The resulting URL only becomes
invalid if the blob is deleted.

On Tue, Aug 24, 2010 at 1:53 PM, Flips p...@script-network.com wrote:

Hi,

how do I use get_serving_url correctly if I'd like to host a gallery
of 28 pictures? I currently fetch all blob_keys and call 28 times the
get_serving_url method to get my image urls. But this attempt is
really slow (about 12 seconds). Would it be smarter to call
get_serving_url if the blob has been created and store the image url
in datastore?

Best Regards
Philip

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Re: [google-appengine] Re: The phone number has been sent too many messages or has already been used to confirm an account.

2010-08-24 Thread Ikai L (Google)

Can you fill out this form?

https://appengine.google.com/waitlist/sms_issues

On Sun, Aug 22, 2010 at 12:29 PM, NealWalters
nealwalt...@nealwalters.comwrote:

I still need to be able to create a test-site that I can share with co-
workers.
How do I get past this issue? What if I'm a consultant and I create
google app sites for customers? Do I have to use their phone
numbers?

Thanks,
Neal

On Aug 5, 9:49 pm, NealWalters nealwalt...@nealwalters.com wrote:
I registered olexeprod under olexe.com last week, and now today we
need a test site, so tried to register olexetest, and getting the
SMS verification issue in the subject above. This really delays
development when this happens. Last time Nick or somebody approved
it, can you do that again?

Thanks,NealWalters

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Re: [appengine-java] Adobe air support in GAE

2010-08-23 Thread Ikai L (Google)

Yes, AIR is a client side technology. Communicate with your App Engine app
via HTTP or XMPP.

On Mon, Aug 23, 2010 at 3:54 AM, aptest1 actiprocess apte...@gmail.comwrote:

 HI,

 Is it possible to use adobe air in GAE.

 Thanks
 Mahesh

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Re: [google-appengine] Guarantees for businesses?

2010-08-23 Thread Ikai L (Google)

1. Yes, we will continue the service for 3 years in the event we choose to
discontinue App Engine. I've stated in another thread that I believe this is
highly unlikely.

2. No, we do not guarantee those rates. They are subject to change depending
on our costs, though the trend has been lower cost bandwidth, lower cost,
storage, etc, and not the other way around. The next question folks usually
ask is, Will prices be lower? The answer: we don't know.

On Mon, Aug 23, 2010 at 11:49 AM, Riley rileyl...@gmail.com wrote:

I'm investigating GAE as a platform for a web app I want to build and
release commercially. It looks fantastic so far, but I have two major
questions:

1) I think I understand from section 10.2 of the GAE ToS that Google
will (probably) give a 3-year warning before discontinuing the service
in its present form. Is my understanding correct?

2) The billing prices seem very low (great!). Has Google made any
promises about the rates at which those prices can change?

Thanks!

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Re: [google-appengine] Re: No mobile phone

2010-08-23 Thread Ikai L (Google)

Use that link to report issues with SMS verification. In your case, enter in
the description that you do not have a mobile phone and you will be manually
verified. We should probably rename that form to manual verification
rather than SMS verification.

On Sat, Aug 21, 2010 at 7:46 PM, James13M jamesmaje...@gmail.com wrote:

That link is for reporting a problem in receiving the SMS (I still do
not know what that is) on your cell phone or mobile phone.

On Aug 19, 7:42 pm, Geoffrey Spear geoffsp...@gmail.com wrote:
There's a link athttp://groups.google.com/group/google-appengineyou
can use to get your account verified without SMS.

On Aug 19, 8:03 am, James13M jamesmaje...@gmail.com wrote:

I can not get past the SMS (whatever that is) and the requirement for
a cell phone. I do not want a cell phone as I have no use for it. Is
there a way to get past that requirement or is Google subsidizing the
cell phone companies?

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Re: [google-appengine] Re: May I use the Google logo?

2010-08-23 Thread Ikai L (Google)

You'll want to read this page about the proper permissions for using Google
logos:

http://www.google.com/permissions/index.html

http://code.google.com/appengine/terms.html

On Sun, Aug 22, 2010 at 12:59 PM, nickmilon nickmi...@gmail.com wrote:

Since Niklasro's link above seems broken,

you can get an other transparent App Engine Logo in png format from a
link you can find here :
http://gaengine.blogspot.com/2010/06/transparent-app-engine-logo.html

By the way you can see this lovely plane flying if it happens to
visit above page with Chrome browser.

Happy coding:-)

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Re: [google-appengine] Stuck indexes

2010-08-23 Thread Ikai L (Google)

They've been placed into error state. Go ahead and run vacuum_indexes.

On Sun, Aug 22, 2010 at 10:29 AM, Thyako thy...@gmail.com wrote:

 Hi. My app with id truthapp has 3 indexes stuck in bulding for more
 than a month and 1 index stuck at deleting for a week.

 Can someone move to error state, please? Thanks!

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Re: [google-appengine] Re: My indexes are stuck (Building...)

2010-08-23 Thread Ikai L (Google)

They look to be in serving state. They probably weren't stuck, just building
slower than usual.

On Sat, Aug 21, 2010 at 7:32 PM, Alexander Orlov
alexander.or...@loxal.netwrote:

thx :)

On Aug 22, 4:01 am, Alexander Orlov alexander.or...@loxal.net wrote:
...the Building status is already displayed for almost a whole day
although the index consists of 3 entities. The other index is larger
but is stuck as well, maybe because of the other.

Therefore I can't use map/reduce.

My app is lox-loxal. Google please help! ;)

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Re: [google-appengine] Detect Mobile Phone

2010-08-23 Thread Ikai L (Google)

Can you use the user-agent?

On Sat, Aug 21, 2010 at 11:12 PM, prgmratlarge yossiele...@gmail.comwrote:

 Need a quick and easy way to detect mobile phones from my app, that
 won't add too much performance overhead. Any suggestions?

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Re: [google-appengine] Google App Engine

2010-08-23 Thread Ikai L (Google)

Is this what you are looking for?

http://code.google.com/apis/picasaweb/overview.html

On Sun, Aug 22, 2010 at 9:08 PM, Pete xx...@hotmail.com wrote:

 I knew that the Google App Engine come with image api that can host
 picture, but I will need the picasa as my image hosting.

 My question is that how can I integrate picasa with Google App Engine?

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Re: [appengine-java] Determine in runtime (Java) who deployed app

2010-08-20 Thread Ikai L (Google)

No, this doesn't exist in the API. What's the use case? You could probably
write a pre-deploy hook via command line scripting to update a datastore
entity somewhere (possibly even in another application), but this is
probably easier to solve with internal communications or version numbers.

On Fri, Aug 20, 2010 at 6:44 AM, andrew andrew.macken...@bcntouch.comwrote:

I would like to be able to determine in run time (I am using Java) the
username of the admin who deployed the running instance of the
application.

I have looked at programmatic access to admin logs (no?),
SystemProperty (no), and ServletContext (no) to see if this property
is accessible at run time, without success.

Any suggestions anyone?

thanks

Andrew

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Re: [google-appengine] Re: SDK 1.3.6 released!

2010-08-19 Thread Ikai L (Google)

Users running into issues with fancy_urllib: are you running
django-appengine-patch?

On Thu, Aug 19, 2010 at 10:23 AM, Spines kwste...@gmail.com wrote:

I did some performance testing on the new high performance image
serving that uses getServingUrl.

If anyones interested I wrote about it here:

http://www.answercow.com/q/304002/app-engines-high-performance-image-serving-system

On Aug 18, 11:45 am, Spines kwste...@gmail.com wrote:
Thank you App Engine Team! I had been struggling with how I would get
a decent solution for displaying lots of thumbnail images on one page,
and with this release and the getServingUrl function, it seems like my
problems are solved!

On Aug 17, 2:19 pm, Ikai L (Google) ika...@google.com wrote:

Hey guys,

This is just a heads up that App Engine SDK version 1.3.6 is officially
released! Read more about it here:

http://googleappengine.blogspot.com/2010/08/multi-tenancy-support-hig.
..

Release notes are below:

Java 1.3.6

- Multitenancy is now supported in the datastore, allowing better
compartmentalization of user data.
- Automatic image thumbnailing is now available in the Images API
using
getServingUrl.
- Users can now serve custom static error pages for over_quota,
dos_api_denial and default cases.
- Results of datastore count() queries and offsets for all datastore
queries are no longer capped at 1000.
- Added a pause queue button to the task queue details page in the
Admin
Console.
- Historical graphs have been added to all of the dashboard graphs
in the
Admin Console.
- Content-range headers are supported on Blobstore downloads.
- New method to allocate datastore ids in a given range:
allocateIdRange()
- The app.yaml format is supported with Java applications.
- Increased several rate limited quotas for free applications.
- Fixed an issue that did not allow forms of over 200,000 bytes to
be
submitted.
-http://code.google.com/p/googleappengine/issues/detail?id=1608

Python 1.3.6

- Multitenancy is now supported in the datastore, allowing better
compartmentalization of user data.
- Automatic image thumbnailing is now available in the Images API
using
get_serving_url().
- Users can now serve custom static error pages for over_quota,
dos_api_denial and default cases.
- Results of datastore count() queries and offsets for all datastore
queries are no longer capped at 1000.
- Added a pause queue button to the task queue details page in the
Admin
Console.
- Historical graphs have been added to all of the dashboard graphs
in the
Admin Console.
- Content-range headers are supported on Blobstore downloads.
- Remote API now supports the Blobstore API.
- New method to allocate datastore ids in a given range:
db.allocate_id_range().
- New db method is_in_transaction() determines if a transaction is
still
open.
- Increased several rate limited quotas for free applications.
- Fixed an issue in db.py where unindexed property lists for
user-specified property names were ignored.
- Fixed an issue where the task queue uses local time instead of UTC
time
to compute job ETA.
-http://code.google.com/p/googleappengine/issues/detail?id=2508
- Fixed an issue in the SDK with datastore cursors being too large.
-http://code.google.com/p/googleappengine/issues/detail?id=3152

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[google-appengine] Google App Engine IRC Office hours chat transcript August 19, 2010

2010-08-19 Thread Ikai L (Google)

Hey everyone,

Just wanted to post the transcript for our IRC office hours. We're thinking
about reducing the chat time to once a month due to the relatively low-level
of activity. Would it be more useful if we scheduled IRC office hours for a
week after each release?

-

Notable questions:

- What is multi-tenancy?

Multitenancy is the ability to create namespaces for your data in the
datastore, memcache and task queues. Developers will be able to create
virtual partitions in their application as needed. This can apply to an
application with multiple domains, multiple customers, and so forth.

- How do you get the namespace of a model instance in Python?

.key().namespace()

- Can you use namespaces to separate models by account owners? (replace
where account = :1)

Yes

- Can you globally change a namespace name?

No

- Will App Engine allow users to manage/purchase more memory in the future?

Possibly, we are exploring ways in which we can do this.


[08:59am] ikai_google: All right everybody, let's kick off today's office
hours session
[08:59am] ikai_google: there are a few Googlers in hiding here
[08:59am] nickjohnson: Evening all
[08:59am] ikai_google: you all know me, I lurk here much of the time
[09:00am] moraes: i knew it!!!11
[09:00am] ikai_google: there's also nickjohnson
[09:00am] ikai_google: there are a few whom I suspect are googlers based on
their handles
[09:00am] ikai_google: but I'm not going to call them out =)
[09:01am] ‚Ä¢ moraes summons the hidding spirits
[09:01am] morais78 joined the chat room.
[09:02am] ikai_google: okay, so ... everyone has seen the 1.3.6 release,
right?
[09:02am] ikai_google:
http://googleappengine.blogspot.com/2010/08/multi-tenancy-support-high-performance_17.html
[09:02am] nickjohnson: Yaay!
[09:02am] ikai_google: there's LOTS of good stuff here
[09:02am] moraes: you know, i didn't even know what Multi-tenancy meant
but i know that i was doing it hardcoded
[09:02am] perlmonkey2: anything in the gae pipeline thats going to make a
splash?
[09:02am] nickjohnson: moraes: Are you intending to switch?
[09:02am] moraes: nickjohnson, yes, now
[09:02am] ikai_google: perlmonkey2: lots
[09:03am] ikai_google: perlmonkey2: 1.3.6 is a pretty big release as it is
[09:03am] slynch_google joined the chat room.
[09:03am] moraes: nickjohnson, i created run_in_namespace(), the cousing of
run_in_transaction(): http://paste.pocoo.org/show/251604/
[09:03am] moraes: hehe
[09:04am] moraes: *cousin
[09:04am] psykidellic: So what would be the best option to stream mp3
(stored in GAE) over RTMP?
[09:04am] perlmonkey2: ikai_google just saw your post. new releases are
always exciting
[09:04am] johnlockwood joined the chat room.
[09:04am] nickjohnson: moraes: Oh, nice.
[09:05am] ikai_google: psykidellic: I'm not an expert on RTMP but #2 looks
like the way to go http://en.wikipedia.org/wiki/Real_Time_Messaging_Protocol
[09:05am] morais78: Custom Error Pages: thank you appengine team :)
[09:06am] psykidellic: So I guess I have to run an external RTMP server and
configure it to use the GAE datastore?
[09:06am] ikai_google: psykidellic: Again, not an expert. Try it out and let
us know, I don't know how this works or even if it *will* work
[09:06am] mbw: psykidellic: if you are interested in RTMP in python, talk to
Nick Joyce.  He is the author of PyAMF and RTMPy ... he is njoyce on this
chan
[09:06am] psykidellic: Okay.
[09:06am] ikai_google: hey mike!
[09:06am] nickjohnson: psykidellic: That's probably the best option. RTMP
over HTTP _might_ work, but you'd have to implement your own RTMP stack in
App Engine
[09:06am] mbw: hi ikai
[09:06am] moraes: nickjohnson, can you get from an entity its namespace?
[09:06am] ikai_google: in case anyone is wondering, mbw is from WebFilings:
http://googleappengine.blogspot.com/2010/08/webfilings-streamlines-sec-reporting.html
[09:07am] psykidellic: Yeah, I have seen: http://rtmpy.org/ - it uses
Twisted so wont run on GAE.
[09:07am] ikai_google: moraes: You might be able to set the namespace, then
just do a get all entities
[09:07am] ikai_google: moraes: I'm not sure what you're asking?
[09:07am] mbw: psykidellic:  Nick actually works with Webfilings now, but he
is still actively working on PyAMF and RTMPy.  WF hasn't used rtmp at all,
but we have made large contributions to the GAE adapter for PyAMF
[09:07am] nickjohnson: moraes: Yes, it's part of the key
[09:08am] nickjohnson: .key().namespace(), I suspect
[09:08am] psykidellic: mbw: Aha, nice. I will look around for him up here.
[09:08am] moraes: nickjohnson, oh ok, was looking for this. ikai_google,
that ^
[09:08am] psykidellic: mbw: From all the option, it seems the easiest
(considering I am not much RTMP expert) would be run Wowza on EC2 and
configure it to use GAE (though I am not sure if thats even possible)
[09:08am] moraes: key().namespace() indeed, i missed that
[09:09am] carlosm left the chat room. (Remote host closed the connection)
[09:10am] mbw: psykidellic: an external setup would

Re: [appengine-java] Re: SDK 1.3.6 released!

2010-08-18 Thread Ikai L (Google)

It's not possible, you'll have to traverse the index no matter what. I
advise counting either offline or on write if this is possible. With very
large numbers, the 90% use case is that you want an approximation. There may
be techniques for approximating (similar to Google Search or Gmail), but
these techniques are often very domain specific. For instance, you may look
at the first 20 results, realize that they correlate to 5 parent elements,
know that there are 100 parent elements and estimate the results at ( 20 / 5
) * 100 = 400 results.

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Re: [google-appengine] Chart/Finance software for purchase/develpment

2010-08-18 Thread Ikai L (Google)

No, this isn't the best place to post these questions, as they're not App
Engine related, they're general web development related.

There's the Google Visualizations API, which does some of the things you
need:

http://code.google.com/apis/visualization/documentation/gallery.html

In the past, I've used Fusion Charts:

http://www.fusioncharts.com/

On Tue, Aug 17, 2010 at 12:31 AM, Ady Spencer
adyspence...@googlemail.comwrote:

Apols if this is totally the wrong place to post, but my query as
below, placed in various development forums. Can anyone help or
advise?

Hi all,

Apols in advance for any blatant ignorance in my posting, but I'm not
overtly tech savvy.

I work in the world of commodities/chemicals manufacture and I am keen
to build a secure area on the web for our marketing staff to access to
keep tabs on production, inventory, market data - basically an area
where we can analyze our statistics, make predictions of future market
trends.

We have all the data, we just need to host it in a fun and interactive
environment.
Basically, I would love to produce something similar to the applets (I
think) available for analysis via Google finance and I wondered if
this is something available off the shelf, or if any companies can
host this for us at a cost effective rate?

If anyone can advise, could they please comment here or PM me?

Also posted on the Java section (in case relevant there...)

Cheers

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Re: [appengine-java] Caching feed

2010-08-17 Thread Ikai L (Google)

You want to use App Engine cron:

http://code.google.com/appengine/docs/java/config/cron.html

On Mon, Aug 16, 2010 at 6:57 PM, HIRAK hirak1...@gmail.com wrote:

Hi,
I am trying to implement a feed reader of my own using google app
engine.
Now, I dont want to parse the feed xml each time I get a request.
So there should be some kind of caching of feeds.

For caching, I am using the JDO persistencemanager.

But I am facing problem, trying to refresh the cache at certain
intervals. I tried with Quartz scheduler and also with Java timer.
But as appengine doesn't allow users to spawn threads, both the ways
failed.

Could anybody please give me some hint, on how to schedule the feed
caching activity.

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[appengine-java] SDK 1.3.6 released!

2010-08-17 Thread Ikai L (Google)

Hey guys,

This is just a heads up that App Engine SDK version 1.3.6 is officially
released! Read more about it here:

http://googleappengine.blogspot.com/2010/08/multi-tenancy-support-high-performance_17.html

Release notes for Java are below:

Version 1.3.6 - August 17, 2010

- Multitenancy is now supported in the datastore, allowing better
compartmentalization of user data.
- Automatic image thumbnailing is now available in the Images API using
getServingUrl.
- Users can now serve custom static error pages for over_quota,
dos_api_denial and default cases.
- Results of datastore count() queries and offsets for all datastore
queries are no longer capped at 1000.
- Added a pause queue button to the task queue details page in the Admin
Console.
- Historical graphs have been added to all of the dashboard graphs in the
Admin Console.
- Content-range headers are supported on Blobstore downloads.
- New method to allocate datastore ids in a given range:
allocateIdRange()
- The app.yaml format is supported with Java applications.
- Increased several rate limited quotas for free applications.
- Fixed an issue that did not allow forms of over 200,000 bytes to be
submitted.
- http://code.google.com/p/googleappengine/issues/detail?id=1608

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Re: [appengine-java] Reusing GWT Localization on Server Side

2010-08-16 Thread Ikai L (Google)

Since they're just properties files, you should be able to use the same
messages as a shared resource in your local project, but I doubt you'd be
able to use the same code. Have you also asked this question in the GWT
groups?

http://groups.google.com/group/Google-Web-Toolkit

On Sun, Aug 15, 2010 at 10:36 PM, Casey j.casey.one...@gmail.com wrote:

Does anyone know if with Google App Engine there is an easy way to
reuse your client size localization files (constants and messages)
from GWT? I think in GWT 1.6 or 1.8 you could actually call the same
GWT localization code on the server side that you called on the client
side. I just upgraded from 1.6 to 2.0 and all of a sudden I'm
receiving the following message: ERROR: GWT.create() is only usable in
client code! That makes sense to me but there must be an easy way to
reuse your Constant and Message files on the server. It's been awhile
since I've opened this project but I'm pretty sure that this was
working before. Thanks in advance.

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Re: [appengine-java] Re: Oracle sues Google on Java Patents and Copyright

2010-08-16 Thread Ikai L (Google)

Warning: I am not a lawyer.

This lawsuit is about Android and Dalvik. Google App Engine should not be
affected.

Here's an interesting read I found about this subject:
http://blog.headius.com/2010/08/my-thoughts-on-oracle-v-google.html

On Mon, Aug 16, 2010 at 10:23 AM, Khor Yong Hao fyh...@gmail.com wrote:

go away oracle, no politic, no politic, java must be free and open freely,
use freely!!!

On Mon, Aug 16, 2010 at 5:15 PM, asianCoolz second.co...@gmail.comwrote:

just ask Oracle to fire all their lawyers and hire 'better
programmers' like google if they are serious about innovation. ask
them make better web, no war. for them everything is just $$$, no
wonder they have xtra to spend on lawsuit

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Re: [appengine-java] Data store low-level API and query filters

2010-08-16 Thread Ikai L (Google)

It may or may not work in your scenario, but if you have a cursor pointing
to the start of events after the end date, you can use an end cursor:

http://code.google.com/appengine/docs/java/javadoc/com/google/appengine/api/datastore/FetchOptions.html#endCursor(com.google.appengine.api.datastore.Cursor)

This tells the query to stop running when it hits this spot in the index. If
you combine this with a start cursor, it may be just what you need. The
trick, of course, is obtaining this cursor - you'll need to issue a query
first, retrieve the cursor, then issue a second query and use this as the
limit.

On Fri, Aug 13, 2010 at 2:15 PM, dominity domin...@gmail.com wrote:

 Hi, there!

 Currently there is no possibility to use two inequality filters for
 data retrieving.
 I'm storing events with start/end dates. And I want to retrieve events
 by date range.
 Currently, I'm retrieving them with query with one filter for start
 date, so retrieved events are older than start date.
 If there is a lot of stored events, query takes a time. Is there any
 possibility to reduce this time?
 Any suggestions?

 Best regards, Alexander.

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Re: [google-appengine] Re: Unable to access the Datastore Viewer

2010-08-16 Thread Ikai L (Google)

That sounds like a different topic. Can you describe which Users are causing
the error?

On Sat, Aug 14, 2010 at 1:52 PM, Saqib Ali docbook@gmail.com wrote:

 seems like if I use Federated Identity for authentication, and store
 user objects in the entities, I will invariably cause the Server Error
 (500) on the Datastore Viewer.

 Is this something that Google can address?

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Re: [appengine-java] Re: HELP: My app is getting lots of HardDeadlineExceededError today.

2010-08-13 Thread Ikai L (Google)

Saving 100 entities in a single request, especially if a TON of indexes will
be created is very expensive and will cause a lot of CPU to be consumed.
There probably is a design that will allow you to accomplish what you need
to do without this limitation. Can you post your use case?

On Thu, Aug 12, 2010 at 11:02 PM, SC2PlayerFinder sc2playerfin...@gmail.com
wrote:

Used appstat and didn't notice anything out of the ordinary. Still
thinking that the main issue here is exploding index and I'm not sure
how to get around that other than to cut search features from the
site, but that would more or less make the app not very useful.

On Aug 12, 10:19 pm, SC2PlayerFinder sc2playerfin...@gmail.com
wrote:
Thanks for the response. I wanted to get back to you sooner, but I
have been scrambling to optimize the application. I'm making some
progress, however, it is still a relative CPU hog due to an exploding
index and the frequent updates the application needs to make in order
to keep the data current. 71000 CPU to save 100 records seems rather
expensive?.

My next step is to run appstat on it and see what is going on.

Current version of the app is running a sc2pf6.appstat.com. The older
version is running at sc2pf2.appspot.com.

On Aug 9, 3:51 pm, Ikai L (Google) ika...@google.com wrote:

I've got a few questions for you:

1. What is your application ID?
2. What are you doing in the tasks?
3. Are you using transactions or entity groups?
4. Are you writing to the same datastore entities?

My guess is that you are running into write contention in the
datastore.
It'd be very helpful to understand what it is you're doing.

App Engine will scale up the number of instances if you are returning
web
requests in less than 800ms (thought 400ms is optimal), but if you are
writing to a small number of entities over and over it won't be able to
resolve that bottleneck.

On Mon, Aug 9, 2010 at 12:28 PM, SC2PlayerFinder
sc2playerfin...@gmail.comwrote:

Further explanation. I had a large increase in users which caused a
chain reaction. Tasks that used to take about 10-20 seconds started
taking longer and using more CPU time. Interestingly, these tasks are
doing the exact same thing, but under a higher load, they take longer
and use more CPU time. I can understand the process taking longer
under load, but why would it use a significant amount more of CPU
time? I will admit that my code is not the most optimal, but then
again isn't the main focus of GAE built in scalability and speed? In
short, I needed on the fly scalability and speed with an influx of
new
users and I don't feel like I got that with GAE? Worse, there was no
way for me to contact someone who could help me out.

I'm left with the feeling that GAE does not do a good job of scaling
up and it is kind of slow as well. Creating and updating records
seems painfully expensive, time out due to new instance creation
happens way to often. Now this is fine for a free app, but I'm going
way over my daily free quota and it is not cheap. Maybe I should be
using Phython and not Java?

On Aug 6, 10:52 pm, SC2PlayerFinder sc2playerfin...@gmail.com
wrote:
Application was running ok yesturday. Still had about 10%
HardDeadlineExceededError, but the same task that executed
yesturday
are not failing almost 100% of the time right now. I even cut back
the amount of records it is processing from 100 to 10 and it is
still
failing.

How do I get ahold of someone at Google, to see if there is
something
wrong with the server my app is on or something. Why would the same
proccess consume more CPU time one day than another?

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Re: [appengine-java] Guestbook (as-is) works locally, but deployed on gae will give Error: Server Error at signin

2010-08-13 Thread Ikai L (Google)

Do the log files provide any information? What's the URL to your
application?

On Thu, Aug 12, 2010 at 3:48 AM, Simpatico gabri...@mysimpatico.com wrote:

 I've deployed the guestbook as it's provided in the demos folder but
 when I click to sign in I get:

 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.

 This is essentially what I've been getting throughout. Indeed the
 result is the same for the sample code:

 public class GuestbookServlet extends HttpServlet {
public void doGet(HttpServletRequest req, HttpServletResponse
 resp)
  throws IOException {
UserService userService = UserServiceFactory.getUserService();
User user = userService.getCurrentUser();

if (user != null) {
resp.setContentType(text/plain);
resp.getWriter().println(Hello,  + user.getNickname());
} else {

 resp.sendRedirect(userService.createLoginURL(req.getRequestURI()));
}
}
 }

 I suspect it has to do with bug:

 http://code.google.com/p/googleappengine/issues/detail?id=3552can=5colspec=ID%20Type%20Status%20Priority%20Stars%20Owner%20Summary%20Log%20Component

 The bottom line is that I cannot deploy my application!

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Re: [google-appengine] Can't access my Datastore Viewer

2010-08-13 Thread Ikai L (Google)

You won't be able to avoid the CPU time. It costs CPU time to delete
entities.

On Thu, Aug 12, 2010 at 12:29 PM, magnum p.magnow...@gmail.com wrote:

The error message:

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

I've found out that this is caused by one of my entities having
attribute names composed of non standard characters
I am almost ready to loose my data if the access to my admin panel
can be restored.

Any questions on how to resolve the problem? The only thing comming to
mind is to create a cron task which will delete all of the bogus
entries, say in batches of 100-200 but this will cost me _a lot_ of
cpu time.

Thanks
P.

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Re: [google-appengine] Re: Hoping to understand the difference between CPU Time and Datastore CPU Time

2010-08-13 Thread Ikai L (Google)

Wow, this is a great link. Posterous is really, really slow for me, though.

On Thu, Aug 12, 2010 at 1:34 PM, Robert Kluin robert.kl...@gmail.comwrote:

 Hi Greg.  Nice write-up.


 Robert






 On Thu, Aug 12, 2010 at 8:25 AM, Greg Tracy gtr...@gmail.com wrote:
 
  Circling back on this thread to report on a couple of outcomes.
 
  First, from a numbers standpoint...  I saw massive improvement when I
  started doing batch puts.
  - On average, a batch put of 472 relatively small entities takes 2,200
  megacycles
  - On average, a batch put of 363 entities takes 1,900 megacycles
 
  Second, total CPU cycles for this job (of parsing a text file,
  creating entities, and storing them) is a fraction of the API cycle
  time. 3,000 v. 98,000 megacycles
 
  Also, I did a write-up on my experience with this analysis process. If
  you're interested, check it out and share your thoughts and
  experiences.
 
  http://www.gregtracy.com/adventures-in-performance-tuning-on-google-ap
 
  Now... how do I manage the API time?!
 
 
  On Jul 21, 2:26 am, Robert Kluin robert.kl...@gmail.com wrote:
  Hey Greg,
Yeah puts are relatively expensive. Doing a batch put is about the
 only way to reduceCPUtime, but of course that does basically nothing
 forAPItime.
 
I always like to see benchmarks and related discussions. Look forward
 to your results.
 
  Robert
 
  On Jul 20, 2010, at 13:51, Greg Tracy gtr...@gmail.com wrote:
 
 
 
 
 
   Thanks for the input, Robert.
 
   After more performance tuning, I've been able to eliminate the
   DeadlineExceeded errors. But I still have a hard time scaling the app
   since the put calls are so expensive. Over thousands of request
   handler calls, I quickly eat upCPUquota (free and paid).
 
   Going back to the original question, I'm still unsure how the quota
   math is working. I'm in the process of creating an-to-end performance
   model of these calls and will post the results.
 
   On Jul 15, 4:40 pm, Robert Kluin robert.kl...@gmail.com wrote:
   Greg,
 If you are having issues with long write times, there are two
 common
   options you may consider: smaller batches and transactional tasks.
 
 I have some code that does batch processing, I set it up to search
   for the maximum batch size that is currently succeeding.  Basically I
   slowly increase my batch size until I am getting deadline exceeded
   warnings then I drop back down adjust my 'growth factor' and repeat
   the processes.  This seems to keep my batches running very close to
   the upper limit without too many deadline exceeded exceptions.
 
 The other approach I have used it to offload some of the writes to
   other background tasks.  I write a group of entities, then send
   another handler another block of entities to write.  This has been
   working well for me too.
 
   Robert
 
   On Thu, Jul 15, 2010 at 5:22 PM, Greg Tracy gtr...@gmail.com
 wrote:
 
   I just started using AppStats for the first time - very nice
 package!
   However, it didn't reveal any glaring problems. But it did help
   validate my belief that I was using the memcache effectively.
 
   I've been using the 'quota' package to find costly operations, and I
   did discover a bug in my measurement. I was starting the clock in
   the wrong spot so I have found some new areas to optimize. Will work
   on that now... but I'm still not confident I can compensate for the
   long write times.
 
   Thanks!
 
   On Jul 14, 10:46 pm, Robert Kluin robert.kl...@gmail.com wrote:
   If you have not already, take a look at AppStats.  Perhaps you can
   find a way to improve performance.  You may also want to read
 through
   some of the datastore articles in the docs to be sure you are
   minimizing resource usage.
 
   Robert
 
   On Wed, Jul 14, 2010 at 7:24 PM, Greg Tracy gtr...@gmail.com
 wrote:
 
   Not for me... I set a budget and immediately started paying.
 
   Not thrilled about this and may need to start a new thread asking
 for
   advice on datastore contention...
 
   Thanks.
 
   On Jul 14, 5:57 pm, Nate Bauernfeind nate.bauernfe...@gmail.com
   wrote:
   I have been.
 
   On Wed, Jul 14, 2010 at 5:37 PM, Greg Tracy gtr...@gmail.com
 wrote:
   Does this imply that I can go over theCPUTime quota and not pay
 for
   it?
 
   On Jul 14, 5:26 pm, Nate Bauernfeind 
 nate.bauernfe...@gmail.com
   wrote:
   The DataStoreCPUtime is included in totalCPUtime. To take
 advantage
   of
   free datastorecputime you need to increase yourcpu-usage
 quota. When
   I
   loaded a bunch of initial test data into the datastore I got
 tons of
   deadline exceeded errors, though I assumed it was cause I was
 trying to
   stuff a lot of data in there all at once.
 
   Nate
 
   On Wed, Jul 14, 2010 at 5:24 PM, Greg Tracy gtr...@gmail.com
 wrote:
 
   I've been adding some new datastore-intensive features to an
 app and
   am blowing through the CPUTime quota. While my understanding
 is
   that the DatastoreCPUTime quotas have been lifted while the

Re: [google-appengine] In login page programmatically change t...@example to my username

2010-08-13 Thread Ikai L (Google)

It's a stub, anyway. Is there a specific reason why you need this feature?

On Thu, Aug 12, 2010 at 5:44 PM, brianl licht...@gmail.com wrote:

 Wondering if there's a way to change the email address in the
 generated login dialog/page for the dev server?  Referring to this
 login page...

 /_ah/login?continue=%2Findex.html

 I'd rather not spend time entering my specific username in the email
 input field.

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Re: [google-appengine] Unintended use of list properties for queries?

2010-08-13 Thread Ikai L (Google)

It might even be faster to retrieve the Entity and do the match in memory,
making the List property unindexed. Java can tear through a substring match
in memory on 5000 elements pretty quickly. Your CPU costs will come in the
form of reading the saving the entity, so you'll want to keep an eye on this
and consider Memcache when it's appropriate.

An alternative could be to shard the parking lot into subsections if you are
working with car makes. There's a finite number of makes in the world, and
you can increase your overall write throughput sharding your data. You
*might* improve read throughput, as gets are parallelized, but you should
benchmark this for yourself to see what works for you.

On Thu, Aug 12, 2010 at 9:22 PM, Mark mar...@gmail.com wrote:

 Hi,

 If a class has a list property, is there any legitimate or hackish way
 in app engine to get the matched elements? For example:

class ParkingLot {
String parkingLotId;
ListString cars;
}

ParkingLot p = new ParkingLot();
p.parkingLotId = abc;
p.cars.add(ford_john);
p.cars.add(ford_mary);
p.cars.add(honda_tim);
p.cars.add(toyota_kim);

// Find all cars in the parking lot that are fords,
// then get their owners.
Query q = select from ParkingLot where parkingLotId = 'abc';
query.setFilter(cars.matches( + ' + ford + %'));

// Right now this will return all ParkingLot instances
// that matched, but instead would want the actual String
// instanced of the List object that matched:
ListString results = q.execute();
// results[0] = ford_john
// results[1] = ford_mary

 Yeah I don't know if the partial string match would work on the list
 property values, and also am pretty sure we can't get back the matched
 string values.

 Right now I need to write out a single CarAtParkingLot entity to do
 the same select:

class CarAtParkingLot {
String parkingLotId;
String carType;
String carOwner;
}

select CarAtParkingLot where parkingLotId = 'abc' and carType =
 'ford';

 which will require a lot more storage, if I am understanding the
 storage model correctly. I have hundreds of thousands of cars at a
 given parking lot. I know a list property can only hold 5000 entities
 at once, and cars leaving parking lots is a performance concern, just
 wondering what options we have here,

 Thanks

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Re: [google-appengine] Java: Can I retrieve a localhost or relative URL (or JSP workaround)

2010-08-13 Thread Ikai L (Google)

I don't know if this'll work, but this is what Google search seems to find
me:

http://stackoverflow.com/questions/1189094/jsp-compilation-to-string-or-in-memory-bytearray-with-tomcat-websphere

(From this search:
http://www.google.com/search?sourceid=chromeie=UTF-8q=render+jsp+output+to+string
)

Can you let us know if it solves your problem?

On Thu, Aug 12, 2010 at 9:53 AM, Marc Hacker marc1hac...@gmail.com wrote:

I need one JSP file to read another JSP file into a String

Is there some efficient way to just read the URL e.g. using
URLConnection to localhost/my.jsp

Or is there some trick for one JSP to read another JSP page into a
String?

I want to do this efficiently (i.e. make sure it goes to the same
server not out to the network) and without paying for the bandwidth!

Thanks

Marc

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Re: [appengine-java] Native geospatial support

2010-08-11 Thread Ikai L (Google)

In general we don't give more specific ETAs for feature releases than soon
very soon next release or on the roadmap (
http://code.google.com/appengine/docs/roadmap.html). I would suggest looking
at something like GeoModel in the meantime if you are looking to do bounding
box searches: http://code.google.com/apis/maps/articles/geospatial.html

On Wed, Aug 11, 2010 at 1:14 AM, fvisticot fvisti...@gmail.com wrote:

In Alfreds talk at Google I/O Next Gen Queries he talks about how
geospatial queries will soon be officially supported by the
datastore.
When this very usefull feature will be available ?

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Re: [appengine-java] Problems with OAuth

2010-08-11 Thread Ikai L (Google)

You do need to register your application to get a consumer key and secret::

http://code.google.com/apis/accounts/docs/OAuth.html#prepRegister
http://code.google.com/apis/accounts/docs/RegistrationForWebAppsAuto.html

Here's a tool written by a friend of mine that I used to verify an OAuth
setup, unfortunately it requires a Ruby on Rails setup ...

http://github.com/episod/oauth-dancer

I'm not familiar with .NET, but do you have any other OAuth clients you can
try?

On Wed, Aug 11, 2010 at 12:17 AM, Alex Bertram akbert...@gmail.com wrote:

 Hi, I'm trying to use the OAuth service but am running up against a brick
 wall. The client is a desktop application and I'm using the .NET code found
 here http://oauth.googlecode.com/svn/code/csharp/OAuthBase.cs

 I've only been able to get 400 Bad Request responses from my app, and the
 requests to _ah/OAuth* do not appear in the logs.

 I've tried both http and https.

 Do I need to register the consumer somewhere?

 Thanks for any pointers!

 Here are the raw request / response from Fiddler:

 POST /_ah/OAuthGetRequestToken HTTP/1.1
 User-Agent: Desktop Addin
 Content-Type: application/x-www-form-urlencoded
 Host: arctileserver.appspot.com
 Content-Length: 230
 Connection: Keep-Alive

 oauth_callback=http%3A%2F%2Farctileserver.appspot.comoauth_consumer_key=
 arctiles.comoauth_nonce=2173727



 HTTP/1.1 400 Bad Request
 Date: Wed, 11 Aug 2010 06:36:37 GMT
 Content-Type: text/html; charset=UTF-8
 Server: Google Frontend
 Content-Length: 273


 htmlhead
 meta http-equiv=content-type content=text/html;charset=utf-8
 title400 Bad Request/title
 /head
 body text=#00 bgcolor=#ff
 h1Error: Bad Request/h1
 h2Your client has issued a malformed or illegal request./h2
 h2/h2
 /body/html

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Re: [google-appengine] Template {% cycle %} state is stored between requests

2010-08-11 Thread Ikai L (Google)

Interesting bug. It shouldn't work this way. I'll take a look at this.

Can you accomplish the same thing using the span tag and just letting it
wrap?

On Wed, Aug 11, 2010 at 1:12 AM, Blixt andreasbl...@gmail.com wrote:

When using {% cycle first,second %} it would appear that its state is
stored between requests. The first time, the results are first,
second, first, second... and the second request is second, first,
second, first... (there is an odd amount of items that are cycled.)

Is this bug specific to Google App Engine? A Google search didn't seem
to bring up any results mentioning it.

For a live example, see: http://2.latest.simpleeditionsapp.appspot.com/
Relevant code:

http://github.com/littke/simpleeditions/blob/187c5ebf71ce1824acb28eb8da8dd51aca20a848/src/templates/home.html#L15

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Re: [google-appengine] Documentation Error - says app_id instead of application

2010-08-11 Thread Ikai L (Google)

I've sent in changes. Hopefully they'll be live soon. Thanks for the catch.
These are documented correctly when you run appcfg.py with no parameters but
not on the live site.

On Tue, Aug 10, 2010 at 10:35 PM, Gayle Laakmann gay...@gmail.com wrote:

The documentation for exporting data uses the app_id parameter:
appcfg.py download_data --app_id=app-id --url=http://appname.
appspot.com/remote_api --filename=data-filename

I believe this should say application instead of app_id:
appcfg.py download_data --application=app-id --url=http://appname.
appspot.com/remote_api --filename=data-filename

At least, this was the only way the command would work for me. I'm
using app engine 1.3.5.

Could someone from Google please update the documentation?

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Re: [google-appengine] App Engine Scaling/Error Concern

2010-08-11 Thread Ikai L (Google)

Measure your QPS, use AppStats, and be sure your requests that are user
facing finish quickly. If the majority of your requests finish in under
800ms and return to the user, we'll spin up new instances for you. 400ms is
best, however. That's 800ms of perceived time for the user - not total time
(datastore calls are parallelized, so you could consume 2000ms of CPU time,
but if your request returns to the user in 300ms you are okay). Do any work
that will take longer in Task Queues or Cron when possible.

On Wed, Aug 11, 2010 at 11:11 AM, Nikita Srivastava nikisri...@gmail.comwrote:

Makes sense. Also, another user here pointed me to the 1.3.6 specs which
says that custom error pages would be soon available. So the Quota Error be
less of an issue, because we do get errors and we do show them, but the main
issue was fear of sudden 'app engine' error when no user knows what app
engine is. I hope 1.3.6 resolves this.

As for the reason you mentioned, I think what we should do is set daily
budget twice of what we paid for CPU previously, which was not cheaper I
think ($0.08 per 1.2Ghz CPU hour). So I am planning to set this to
$2000-2500 range as daily limit to avoid the Quota errors to legit users.
Any other things that you can suggest that I should do?

Thanks!

On Wed, Aug 11, 2010 at 8:13 PM, Nick Johnson (Google)
nick.john...@google.com wrote:

Hi Nikita,

On Wed, Aug 11, 2010 at 7:01 AM, Nikita nikisri...@gmail.com wrote:

Hello,

We're trying to deploy a large project on app engine, and by this
time, we have an app engine version in internal testing. However, we
have a few concerns:

First, the information this gentleman expresses:
http://aralbalkan.com/1504

Here is a quote - You build an awesome new app on Google App Engine.
You tell your friends. They tell 1,000 of their friends on Twitter who
tell 1,000 of their friends and then, suddenly, you have all these
developers hitting Google App Engine for the first time to see your
app. Paradoxically, by doing that, they trigger the intelligent
throttling feature in Google App Engine which freaks out and shuts
down your app with an Over Quota error -- effectively making the
Over Quota message the first impression most of your audience has of
Google App Engine.

To what extent is this true? As paying customers with a sizable budget
(We're paying over $35,000 a month on our current host, bandwidth
exclusive), this is completely unacceptable.

There's no intelligent throttling. Every app has quotas, determined by
the amount of budget you allocate to each resource (or a fixed amount, in
the case of free apps), and the quotas are accounted for both on a daily
basis and in smaller bins. In other words, your traffic can vary, but we
won't let your app consume its entire budget before we start serving over
quota errors. I hope you can see why this is: we assume you don't want a
single spike of traffic, for example because your app is being abused, to be
able to consume your entire quota for the day, leaving your app serving 'out
of quota' errors for the rest of the day!

I assumed that this might be true only for free accounts, but then one
of our engineers found this -

http://groups.google.com/group/google-appengine/browse_thread/thread/32876e345d075878/e2ec2e4fdd7ca3e0

This is a paying customer begging for your mercy to scale. He claims
he gets a Out of Quota error in 1 of 6 requests. This shows he isn't
really out o his daily Quota, but there is something else that's going
wrong.

As you can see from the thread, the user was only experiencing issues
because some of their requests were taking too long to complete. We impose
limits on how many instances of an app we will schedule if the app takes too
long to respond, because slow apps don't scale very well and would take
disproportionate amounts of resources.

-Nick Johnson

It would be great i somebody from Google can comment on the validity o
the above concerns. We don't want to shift our entire business to app
engine and have our customers watch the Out of Quota - App engine
errors. Frankly, this would be like BSOD of the web 2.0 world. :)

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

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Re: [appengine-java] Stored Data- how billed?

2010-08-10 Thread Ikai L (Google)

We should be taking the average per month, so if you have 25gb averaged over
a month, you are charged 25gb x $0.15 = $4 for storage. More likely than
not, you will be incurring CPU costs, not storage costs.

On Mon, Aug 9, 2010 at 4:39 PM, Shawn Brown big.coffee.lo...@gmail.comwrote:

Hi,

About storage costs,

If I have say 25 GB in storage,
is this right -- 25 GB X $0.15/month = $3.75/month???

The docs here say:
http://code.google.com/appengine/docs/billing.html#Billable_Quota_Unit_Cost
Stored Data gigabytes per month $0.15

Other quotas are on a daily basis so I'm a little confused.
Is my storage per day added up and then billed so actually I'd see

25 GB (on disk) X 31 days X $0.15 = $3.75 x 30.

I'm guessing daily storage is averaged and then billed at the end of the
month.

(daily average for the month) in GB X $0.15/month

Anyone know?

Shawn

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Re: [appengine-java] Monitoring the Task Queue

2010-08-10 Thread Ikai L (Google)

There are a few open feature requests for this. You'll want to star them:

http://code.google.com/p/googleappengine/issues/list?can=2q=task+queuecolspec=ID+Type+Status+Priority+Stars+Owner+Summary+Log+Componentcells=tiles

On Tue, Aug 10, 2010 at 6:48 AM, fvisticot fvisti...@gmail.com wrote:

 Is there an API available to monitor the task queue.
 I would like to be trigged in my code when the queue is empty.

 A Listener for queue empty would be nice ...

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Re: [appengine-java] Retrieving the n nearest Points(Location) returned by distance

2010-08-10 Thread Ikai L (Google)

We don't do spatial indexing yet. However, read up on Geomodel:

http://code.google.com/p/geomodel/
http://code.google.com/apis/maps/articles/geospatial.html

On Tue, Aug 10, 2010 at 7:26 AM, fvisticot fvisti...@gmail.com wrote:

 I have entities with a  GeoPt property

 In input, i have a longitude/latitude (current user location) and i
 would like to return the n nearest entities.

 How to solve this pb ? What is the query ?
 Do i need to use an external framework ?

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Re: [google-appengine] can't enable billing

2010-08-10 Thread Ikai L (Google)

Can you fill out this form?

http://code.google.com/support/bin/request.py?contact_type=AppEngineBillingSupport

On Tue, Aug 10, 2010 at 8:05 AM, africa andywo...@gmail.com wrote:

I am failing to enable billing.
I go to billing settings then enable billing, I set my daily budget,
select country (.il) and go to google checkout.
Then I complete my credit card info, and finish the payment.

Then I am told to wait 30 min. At the end of that 30 min, I received
the following:

Google Services has cancelled your order. You won't be charged.
Reason: Other (describe below)
Comments from Google Services: This inactive subscription has been
canceled

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Re: [google-appengine] Data Store Functionality

2010-08-10 Thread Ikai L (Google)

You'll want to read the docs and do the tutorials that are available. Many
new developers find that a self-guided approach is the most effective for
learning a new skill.

http://code.google.com/appengine/docs/java/gettingstarted/
https://sites.google.com/site/gdevelopercodelabs/app-engine/java-codelab

On Mon, Aug 9, 2010 at 9:15 PM, prakhil samar prakhilsa...@gmail.comwrote:

Hi all
I m new to Google App Engine and JAVA i m building an applciation in
which data is to be saved and retrieved as and when required (Add,
Edit, Update functionality is must). please someone tell me how to do
that, i m using Eclipse IDE and java language, I have Added the data
in data store but how to edit and then update that data PLease help
me, its urgent..

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Re: [google-appengine] URL image fetch

2010-08-10 Thread Ikai L (Google)

There are a few threads about forwarding emails with attachments here:

http://groups.google.com/group/google-appengine-java/browse_thread/thread/34fc6354a923e6af/3292bcd1535394a4?lnk=gstq=attachment+incoming#3292bcd1535394a4

http://groups.google.com/group/google-appengine-java/search?group=google-appengine-javaq=attachment+incomingqt_g=Search+this+group

The code in those posts *should* still be working. We made a change to how
inbound emails were handled, but I don't believe it's broken any of that
code.

On Mon, Aug 9, 2010 at 8:43 PM, witiProg mrluisfle...@gmail.com wrote:

 Hi every body
 Sorry for my english.
 I'm tryn to fetch an image from url, and then send it via mail;
 this is my code:

 String url = http://www.google.co.ve/images/firefox/
 globe_getinvolved.png
 String contenttype ;

 URL myurl = new URL(url);
 HttpURLConnection conn = (HttpURLConnection) myurl.openConnection();
 contenttype = conn.getContentType();
 Object image = conn.getContent();
 Message msg = new MimeMessage(session);
 msg.setFrom(new InternetAddress(xx...@gmail.com,Admin));
 msg.addRecipient(Message.RecipientType.TO,xx...@gmail.com);
 msg.setSubject(url);
 MimeBodyPart ad = new MimeBodyPart();
 ByteArrayDataSource src = new
 ByteArrayDataSource((InputStream)image,contenttype);
 ad.setDataHandler(new DataHandler(src));
 Multipart mp = new MimeMultipart();
 mp.addBodyPart(ad);
 msg.setContent(mp);
 Transport.send(msg);


 The problem is when i do the cast to the object
 'image' (InputStream)image ; How can i do to convert the result of the
 conn.getContent(); to an InputStream or to a byte[].
 Thanks

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Re: [google-appengine] My application Datastore index was stuck in Building state.

2010-08-10 Thread Ikai L (Google)

They've been place in error state. You'll want to vacuum them.

On Tue, Aug 10, 2010 at 2:04 AM, ryan linuz...@gmail.com wrote:


 Could you help me delete all my indexes ASAP.
 My appid is: zhengbinblog


 Thanks.

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Re: [google-appengine] Re: GAE for business and users

2010-08-10 Thread Ikai L (Google)

Google App Engine for Business is targeted at developers building for
applications restricted to Google Apps domains, so it's not user in the
sense of a random internet user.

On Tue, Aug 10, 2010 at 10:39 AM, Geoffrey Spear geoffsp...@gmail.comwrote:

On Aug 10, 8:55 am, Magno Machado magn...@gmail.com wrote:
On GAE for Business, each app will cost $8 per user per month.

Does that means I'll have to use the google accounts api? In an app I'm
developing, I'm implementing all the user/authentication stuff myself,
can't
I do that on GAE for business?
How will google know how many users I have on the app?

I believe the charge is per registered user of your Google Apps domain.

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Re: [appengine-java] Re: HELP: My app is getting lots of HardDeadlineExceededError today.

2010-08-09 Thread Ikai L (Google)

I've got a few questions for you:

1. What is your application ID?
2. What are you doing in the tasks?
3. Are you using transactions or entity groups?
4. Are you writing to the same datastore entities?

My guess is that you are running into write contention in the datastore.
It'd be very helpful to understand what it is you're doing.

App Engine will scale up the number of instances if you are returning web
requests in less than 800ms (thought 400ms is optimal), but if you are
writing to a small number of entities over and over it won't be able to
resolve that bottleneck.

On Mon, Aug 9, 2010 at 12:28 PM, SC2PlayerFinder
sc2playerfin...@gmail.comwrote:

Further explanation. I had a large increase in users which caused a
chain reaction. Tasks that used to take about 10-20 seconds started
taking longer and using more CPU time. Interestingly, these tasks are
doing the exact same thing, but under a higher load, they take longer
and use more CPU time. I can understand the process taking longer
under load, but why would it use a significant amount more of CPU
time? I will admit that my code is not the most optimal, but then
again isn't the main focus of GAE built in scalability and speed? In
short, I needed on the fly scalability and speed with an influx of new
users and I don't feel like I got that with GAE? Worse, there was no
way for me to contact someone who could help me out.

On Aug 6, 10:52 pm, SC2PlayerFinder sc2playerfin...@gmail.com wrote:
Application was running ok yesturday. Still had about 10%
HardDeadlineExceededError, but the same task that executed yesturday
are not failing almost 100% of the time right now. I even cut back
the amount of records it is processing from 100 to 10 and it is still
failing.

How do I get ahold of someone at Google, to see if there is something
wrong with the server my app is on or something. Why would the same
proccess consume more CPU time one day than another?

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Re: [appengine-java] OCR on Google App Engine

2010-08-09 Thread Ikai L (Google)

Is the interface of OCRWebService.com SOAP over HTTP? You should be able to
use URLFetch.

On Tue, Aug 3, 2010 at 12:37 PM, Max bodr.env...@gmail.com wrote:

Hi,

I'm trying to implement the capability to text extraction from images
(TIF/PDF) on Google App Engine. Has anyone had success with this? Is
the best option to utilize a web service? I was able to find
OCRWebService.com, but that only has a SOAP interface and not REST. I
found OCR Terminal (http://www.ocrterminal.com/partnerships/api.cgi),
but I'm unable to find any specifics on how it works. I have tried to
use Google Docs, but the OCR engine there was unable to read any of my
images. Finally, I was able to get Asprise working locally, but it is
only distributed in native libraries (plus it is very expensive).

Has anyone had success with this?
thanks!

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Re: [appengine-java] Callback URL Handling

2010-08-09 Thread Ikai L (Google)

405 is a method not allowed error. Is your application throwing the 405?

On Thu, Aug 5, 2010 at 3:56 PM, compeng4lf juan91...@comcast.net wrote:

I am having trouble with the callback URL in my application. I
successfully authenticate on twitter, but then on the callback i get a
405 ERROR.

I am trying to grab the verifier in the url using:

verify = req.getParameter(oauth_verifier);

which is found in my accesstokenservlet.

Does anyone have an idea on how to properly retrieve and store the
verifier?

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Developer Programs Engineer, Google App Engine
Blog: http://googleappengine.blogspot.com
Twitter: http://twitter.com/app_engine
Reddit: http://www.reddit.com/r/appengine

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