date:20100201

Hi all,
I have the following problem :
my quotas show the following :
Total Stored Data26% 0.26 of 1.00 GBytes Okay
at the same time
Datastore Statistics is showing :
Size of all entities:  5 MBytes

Breakdown by Property Type
Property Type   Size
Blob 5 MBytes
String   14 KBytes
Integer  12 KBytes
Date/Time4 KBytes
User 51 Bytes
NULL 24 Bytes
Metadata 71 KBytes

And I have no idea where is the datastore space disappearing..

my app id is sandcode

Does anybody has idea ? I'll appreciate your advices..

Best Regards:
Dimitar Makariev

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Re: [appengine-java] problem with Datastore quotas

2010-02-01 Thread John Patterson

On the page that shows those details is a link to a doc that explains
where the extra space is used. Probably indexes could consume a lot.

On 1 Feb 2010, at 16:29, dmakariev wrote:

Hi all,
I have the following problem :
my quotas show the following :
Total Stored Data26% 0.26 of 1.00 GBytes Okay
at the same time
Datastore Statistics is showing :
Size of all entities: 5 MBytes

Breakdown by Property Type
Property Type Size
Blob 5 MBytes
String 14 KBytes
Integer 12 KBytes
Date/Time4 KBytes
User 51 Bytes
NULL 24 Bytes
Metadata 71 KBytes

And I have no idea where is the datastore space disappearing..

my app id is sandcode

Does anybody has idea ? I'll appreciate your advices..

Best Regards:
Dimitar Makariev

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[appengine-java] How to monitor restarts of GAE instances

2010-02-01 Thread Raphael André Bauer

Hi everybody,


what kind of monitoring do you use to
1. monitor if an instance restarts.
2. if GAE runs on multiple instances.

(A code snipplet would be really cool).

I am using GUICE, and I am currently monitoring when the GUICE
injector is created - according to my monitoring it is created almost
every 2 minutes under load(!) resulting in ultra long loading times
and super high CPU consumption.

But I want to cross check this - maybe my monitoring is just stupid.


Thanks a lot,

Raphael

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[appengine-java] Check for Entity JDOObjectNotFoundException?

2010-02-01 Thread ChrisDane

Hi there!

Using JDO on GAE/J

PersistenceManager pm = PMF.get().getPersistenceManager();

Key key = KeyFactory.createKey(MyEntity.class.getSimpleName(),
t...@example.com);
MyEntity myEntity  = pm.getObjectById(MyEntity.class, key);

When there is no entity matching the key, it throws
JDOObjectNotFoundException.

Is there no other way, than catching the Exception
(JDOObjectNotFoundException) - like checking for existence of Entity
before calling getObjectById?

Regards
Chris

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[appengine-java] Re: Check for Entity JDOObjectNotFoundException?

2010-02-01 Thread datanucleus

 Is there no other way, than catching the Exception

It's the most efficient way (and JPA does a similar thing, returning
null from that method). Obviously you could run a query but then that
would have to be constructed and compiled etc.

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[appengine-java] Re: Questions about JDO/JPA versioning

2010-02-01 Thread Brandon

Thanks for all the answers.

On Jan 29, 6:13 pm, datanucleus andy_jeffer...@yahoo.com wrote:
  Question3: Given that A is annotated with @Version and the version
  field is protected, should a subclass of A needs to be annotated with
  @Version too in order to have the version managed by JDO/JPA?

 No. The field is protected, so is available to subclasses ...

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Re: [appengine-java] jython / modjy FileOutputStream exception

2010-02-01 Thread Alan Kennedy

[Riley]
 I'm trying to get jython running with modjy.  Following instructions
 from http://opensource.xhaus.com/projects/modjy/wiki/ModjyGoogleAppEngine
 but I get the exceptions below.  It looks like python is trying to
 write an initialization file or something.  I know a lot about Java
 but little about Python.  Any ideas?

Hmm, that's strange; I'll need more information to figure out what's going on.

What version of jython are you using?

Are you using the demo modjy app provided with jython?

If yes, are you modifying it in anyway, e.g. changing the web.xml, etc?

Regards,

Alan.

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[appengine-java] production memcache grabTail namespace isolation broken

2010-02-01 Thread phraktle

Hi,

On production, grabTail returns objects from other namespaces. This is
a significant problem that
makes grabTail (thus queue-like usage) unusable.

I filed this as a bug, with a very simple example here:
http://code.google.com/p/googleappengine/issues/detail?id=2706

Can you please look into this? I don't even see a workaround that I
can implement in the meantime...

Thanks,
  Viktor

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[appengine-java] Re: GAE For Java with struts2 And I am not able to access development admin console

2010-02-01 Thread andy.booth

This occurs with most frameworks that use a filter with a wildcard
mapping to dispatch all requests, the Development server's admin
Servlets are no longer found, and are instead being processed by the
your framework (Struts).

filter-mapping
filter-nameframeworkDispatcher/filter-name
url-pattern/*/url-pattern
/filter-mapping

I'm unsure on the best way to resolve this - as I'm not from a Java
background, I don't know the best way to set up the filter mappings.

However, when I required access to the Admin in Development, I simply
temporarily commented out the framework's default filter with the
wildcard mapping, accessed the Admin, then added the filter again when
needing to run the app.

Andy



On Jan 30, 1:11 pm, MKumar m.kumar1...@gmail.com wrote:
 Hi,
 I am using JAVA GAE , Everything is working fine, but I am not able to
 access the Admin console, which as given in documentation can be
 accessed usinghttp://localhost:myport/_ah/admin

 But its giving me following error:
 HTTP ERROR: 404

 There is no Action mapped for namespace /_ah and action name admin.
 RequestURI=/_ah/admin

 For your information, I had neither used data storage, or queing etc.
 in application, But wanted to directly enter some data using admin
 console.

 Please give me some idea so I can access the admin console for data
 entery on development server.

 Thanks
 Mrityunjay Kumar

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[appengine-java] Re: Object state from a query

2010-02-01 Thread Brandon

Can anyone help, plz?

On Feb 1, 3:43 pm, Brandon brandon.s...@gmail.com wrote:
 Hi,

 I am using JDO. I know that when querying a class of objects residing
 in different entity group, the query should not be executed inside a
 transaction.

 So, what are the state of the objects in the query result (persistent
 or detached)? Should they be detached first before used?

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[appengine-java] Re: Spring MVC - File upload problem

2010-02-01 Thread Viðar Svansson

Hi

You need the jar file, you can download it from:
http://cloud.github.com/downloads/pjesi/springextras/springextras-1.1.jar

Hope that helps,
Viðar

2010/2/1 java rohit82.j...@gmail.com:
 Hello

 I am also using spring with appengine  I want to store a image into
 datastore. I have written same code
     bean id=multipartResolver

 class=is.hax.spring.web.multipart.StreamingMultipartResolver
     /bean

 But when I compile then I got error java.lang.ClassNotFoundException:
 is.hax.spring.web.multipart.StreamingMultipartResolver what I should
 do???

 Thanks in advance


 On Jul 5 2009, 2:06 pm, Viðar Svansson vidarsv...@gmail.com wrote:
 Hi
 Here is my configuration using StreamingMultipartResolver in my AppEngine
 MVC application.

 In my servlet context file:

     bean id=multipartResolver
           class=is.hax.spring.web.multipart.StreamingMultipartResolver
     /bean

 Then in my model:

     private MultipartFile picture;
     // getters and setters

 And finally in the contoller:

     public String uploadPicture(@ModelAttribute(picture) Picture picture)
  {
         MultipartFile file = picture.getPicture();
         byte[] rawData = file.getBytes();
         // ...

 Hope this helps.
 Viðar

 On Thu, Jul 2, 2009 at 11:30 PM, zee zenma...@gmail.com wrote:

  Is there any example on how to use StreamingMultipartResolver in
  Spring MVC based web application
  (actually grails) like sample xml file configuration settings to
  override default spring behaviour?

  I am facing the same problem using google app engine because the
  framework based on Spring MVC
  uses spring file uploads for multipart form requests.

  On Jun 25, 5:45 pm, Viðar Svansson vidarsv...@gmail.com wrote:
   Hi
   Check outhttp://github.com/pjesi/springextras

   You can use is.hax.spring.web.multipart.StreamingMultipartResolver
   I am still working on this so watch for updates.

   Cheers,
   Viðar

   On Mon, Jun 22, 2009 at 5:06 AM, hu itswa...@gmail.com wrote:
i got problem when upload file with MVC, and i wanna to know how did u
implement this ?

On May 13, 5:05 am, pjesi vidarsv...@gmail.com wrote:
 Hi

 CommonsMultipartResolver does write to the filesystem, which is not
 what Google wants. I'm working on a special MultipartResolver for the
 appengine to resolve this issue. Let me know if you are interested.

 Cheers
 Viðar

 On Apr 20, 9:25 pm, Arjan huij...@gmail.com wrote:

  Hi all,

  I am creating a form that allows the user touploadan image. I use
  Spring MVC. I have configured the mulipart resolved as follows:

  bean id=multipartResolver

  class=org.springframework.web.multipart.commons.CommonsMultipartResolver
          property name=maxUploadSize value=200 /
  /bean

  However, this results in an exception because it tries to write a
  temp
  file. I know the Commons FileUploadlibrary used support streaming
  without actually creating a temp file. Can someome tell me how I
  can
  configure this in Spring MVC?

  Thanks in advance!

  Arjan



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Re: [appengine-java] Re: Does precompilation work ?

2010-02-01 Thread Don Schwarz

The next release has a few additional fixes for precompilation
stability.  However, we also plan to turn precompilation on by default
so I'd like to get to the bottom of any failures that you're having
(especially if they are reproducible).

Can anyone experiencing problems zip up their WAR directory and send
it to me privately?  I'd like to do some analysis on it.

On Sun, Jan 31, 2010 at 10:02 PM, Peter Liu tinyee...@gmail.com wrote:
 In my experience deployment sometimes fail with variety of reasons.
 Sometimes it says precompiling starts and eventually time out. The
 console will suggest you to turn off precompilation, but if you try
 deploy again, it will work.

 My suggestion is keep trying.

 On Jan 30, 11:46 am, tomekc to...@ceszke.com wrote:
 Hi All,

 does precompilation work for you ?
 I'm trying a few times deploy with precompilation but still get an
 exception:

 java.io.IOException: Precompilation failed.  Consider adding
 precompilation-enabledfalse/precompilation-enabled to your
 appengine-web.xml and trying again.
 Unable to update app: Precompilation failed.  Consider adding
 precompilation-enabledfalse/precompilation-enabled to your
 appengine-web.xml and trying again.
 Please see the logs [/var/folders/XC/XCZRRBVPHbSTigao7dR+ek+++TI/-Tmp-/
 appcfg8627681542400368916.log] for further information.

 in that log I have:

 Unable to update:
 java.io.IOException: Precompilation failed.  Consider adding
 precompilation-enabledfalse/precompilation-enabled to your
 appengine-web.xml and trying again.
 ...cut...
 Caused by: java.io.IOException: Error posting to 
 URL:http://appengine.google.com/api/appversion/precompile?app_id=Xve...
 503 Service Unavailable

 Try Again (503)
 An unexpected failure has occurred. Please try again.

         at com.google.appengine.tools.admin.ServerConnection.send
 (ServerConnection.java:143)
         ...cut...
 503 Service Unavailable

 Try Again (503)
 ...cut

 I ask because maybe it is temporary problem ?

  Regards, tomek.

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Re: [appengine-java] Re: Building Scalable Complex App

2010-02-01 Thread Duong BaTien

Please see the answer i sent out yesterday for a proper solution.

Duong BaTien
DBGROUPS and BudhNet

On Sat, 2010-01-30 at 01:14 -0800, digitalsam007 wrote:
 I failed to make this code work. It seems that the MessageIndex object
 is not getting persisted when i call tx.commit().
 
 Any help in this regard will be appreciated.
 
 Thanks
 
 On Jan 17, 12:26 am, Duong BaTien duong.bat...@gmail.com wrote:
  Hi:
 
  Following is my sketch for the Message and MessageIndex. Please advise
  and if possible, sketch out the Java version of set intersection from
  the presentation. Have not time to try anything yet; but the design is
  very significant for proper data modeling. The JDO version of the
  presentation uses query.setFilter(receivers == 'foo') which i do not
  see in the API.
 
  public class MessageIndex { // create MessageIndex to the parent Message
private Key parent; private String keyKind; private long id;
 
@PrimaryKey
@Persistent(ValueStrategy = IdGeneratorStrategy.IDENTITY)
private KeyFactory.createKey(parent, keyKind, id) key;
 
@Persistent private ListString receivers;
 
// constructor to create MessageIndex linked to Message
public MessageIndex(Key parent, String keyKind, long id) {
  this.parent = parent; this.keyKind = keyKind; this id = id;
 
  }
 
  public class Message {
@PrimaryKey
@Persistent(valueStrategy = IdGeneratorStrategy.IDENTITY)
private Key key
 
@Persistent private String sender;
@Persistent private String body;
 
// a user create a message to a list of receivers
public static Message createMessage(String userId, String body,
  ListString receivers) {
  tx.begin()
  this.body = body;
  MessageIndex index = new MessageIndex(key, key,getKind(), key.getId
  ());
  index.setReceivers(receivers);
  tx.commit();
}
 
// query to get all messages sent to a user foo
public ListMessage getMessagesSentToUserId(String userId) {
  ListMessage results = null
tx.begin();
  Query q = pm.newQuery(MessageIndex.class);
  q.addFilter(receivers, Query.FilterOperator.EQUAL, foo);
  q.setKeyOnly();
  // query the Message for all messages filtered by parent of
  MessageIndex key
  Query query = pm.newQuery(Message.class);
  query.addFilter(key, Query.FilterOperator.EQUAL, q.execute
  ().getParent());
  results = (ListMessage) query.execute();
tx.commit();
}
 
  }
 
  Thanks
  Duong BaTien
  DBGROUPS and BudhNet
 
  On Wed, 2010-01-13 at 16:26 -0800, Jason (Google) wrote:
   It's been awhile since I've seen this video, so I'll have to go back
   to re-watch it in order to answer your question completely, but I'd be
   interested in seeing what you've sketched out so far and happy to give
   you my feedback on it.
 
   - Jason
 
   On Tue, Jan 12, 2010 at 3:52 PM, Duong BaTien duong.bat...@gmail.com
   wrote:
   Hi Jason, the author Brett Slatkin and others:
 
   1) For the list property, the video shows simple example of
   standard 1:n
   Message Receivers in python and Java. It then demonstrates a
   very
   efficient technique of Message and MessageIndex with the query
   of
   MessageIndex in python (NO Java from then on). I look at both
   the low
   level datastore with Query.setKeyOnly() and the query select
   id from
   to get the results of ListKey, then go through the loop to
   get the
   receivers. I may miss something, since the python code looks
   so clean.
   But once you are in any environment, it is very expensive to
   switch.
   This technique has major impact in data modeling.
 
   2) Again for the set intersection, the python code looks so
   clean. I
   roughly sketch what need to be done on the Java side with
   either low
   level of datastore or with JDO. It is still not elegant as the
   shown
   codes. The demos are also in python. Again, the technique of
   merge join
   will have very significant impact on data modeling that GAE
   may surpass
   other platforms.
 
   Haven't put enough time in it yet, I wonder if any one has
   worked out
   the demos in Java and suggested best practices in data
   modeling for a
   complex large application. The job Brett Slatkin sets out to
   do has not
   completed without the Java codes since GAE now supports Java.
 
   Thanks
   Duong BaTien
   DBGROUPS and BudhNet
 
   On Tue, 2010-01-12 at 14:13 -0800, Jason (Google) wrote:
Can you be more specific about what you're trying to
   accomplish so we
don't have to search through the video to find what you're
   looking
for? Or, at least provide a

[appengine-java] Re: Object state from a query

2010-02-01 Thread datanucleus

JDOHelper.getObjectState(obj) ?

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[appengine-java] Templating a web site

2010-02-01 Thread victor72

Hi,

I am new to Google app engine, and willing to move from asp.net to
Google App Engine / Java.
While I have big experience in asp.net, c# i would like to learn GAE.
My Qs:

1. How can I use page templates / equivalent to master pages in
asp.net ?
2. How can I use multi-lingual texts in a an app.

Can you suggest some eBooks that explain the issues above, or/and a
good guide for an experienced developer to learn GAE?

Thanks in advance,
Victor.

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[appengine-java] How to build a java desktop client for my hosted app engine application ?

2010-02-01 Thread Guwalani Mahendra

How to build a java desktop client for my hosted app engine
application ?

  I have tried to write a code using google client login using that I
could authenticate google account
  and got auth token. but how should I use this token to authenticate
my app engine application

thanks
Mahendra

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[appengine-java] Re: problem with Datastore quotas

Hi again,

I've read the documentation. and cannot find anything related to my
datastore growth :(,
I'm not using indexes. It is quite simple application, demonstrating
the usage of JSF 2. I'm using session, and I've included the
SessionCleanupServlet in my web.xml. It is started every hour.
So the number of entities in _ah_SESSION is round 40 .

My other suspect was the log file. I couldn't find any description
about where the log files are stored.
But I've updated the version number of the application.. deleted the
old one with the big log files, and still the total used datastore
quota didn't decrease.

my current status is 35% of Total Stored Data
and at the same time : Size of all entities 414 KBytes

I'll be really happy to know where and how to manage properly the
datastore space.

Best Regards:
Dimitar Makariev


On Feb 1, 1:38 am, John Patterson jdpatter...@gmail.com wrote:
 On the page that shows those details is a link to a doc that explains  
 where the extra space is used.  Probably indexes could consume a lot.

 On 1 Feb 2010, at 16:29, dmakariev wrote:

  Hi all,
  I have the following problem :
  my quotas show the following :
  Total Stored Data           26%     0.26 of 1.00 GBytes     Okay
  at the same time
  Datastore Statistics is showing :
  Size of all entities:  5 MBytes

  Breakdown by Property Type
  Property Type      Size
  Blob        5 MBytes
  String      14 KBytes
  Integer     12 KBytes
  Date/Time   4 KBytes
  User        51 Bytes
  NULL        24 Bytes
  Metadata    71 KBytes

  And I have no idea where is the datastore space disappearing..

  my app id is sandcode

  Does anybody has idea ? I'll appreciate your advices..

  Best Regards:
  Dimitar Makariev

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[appengine-java] NPE compiling a JSP

2010-02-01 Thread Nacho Coloma

Hi, my application deploys fine in the local environment but when
trying to upload to AppEngine I get this stack trace [1] after
compiling about 30 JSP files.

The page with the bug is not being logged anywhere (the last one,
detail.jsp, compiles OK). I had to guess based on a 'ls -U' order of
folders in the filesystem, which took me a while to guess.

This is just a heads-up, because a way to increase the verbosity of
jspC (adding the -v flag or similar) would be really welcome. Maybe
there is one, but I could not find it.

Of course, fixing the NPE would also be great :)

===

[1] (list of previous JSP files omitted...)

19:43:44,908 INFO  [JspC] Built File: /WEB-INF/jsp/activity-log/
list.jsp
19:43:44,931 INFO  [JspC] Built File: /WEB-INF/jsp/activity-log/
detail.jsp
java.lang.NullPointerException
at org.apache.jasper.compiler.Validator$ValidateVisitor.getMethod
(Validator.java:1269)
at org.apache.jasper.compiler.Validator
$ValidateVisitor.processSignature(Validator.java:1257)
at org.apache.jasper.compiler.Validator$ValidateVisitor.access$400
(Validator.java:295)
at org.apache.jasper.compiler.Validator$1FVVisitor.visit
(Validator.java:1248)
at org.apache.jasper.compiler.ELNode$Function.accept(ELNode.java:122)
at org.apache.jasper.compiler.ELNode$Nodes.visit(ELNode.java:193)
at org.apache.jasper.compiler.ELNode$Visitor.visit(ELNode.java:234)
at org.apache.jasper.compiler.ELNode$Root.accept(ELNode.java:53)
at org.apache.jasper.compiler.ELNode$Nodes.visit(ELNode.java:193)
at org.apache.jasper.compiler.Validator
$ValidateVisitor.validateFunctions(Validator.java:1252)
at org.apache.jasper.compiler.Validator$ValidateVisitor.visit
(Validator.java:593)
at org.apache.jasper.compiler.Node$ELExpression.accept(Node.java:896)
at org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2163)
at org.apache.jasper.compiler.Node$Visitor.visitBody(Node.java:2213)
at org.apache.jasper.compiler.Validator$ValidateVisitor.visit
(Validator.java:564)
at org.apache.jasper.compiler.Node$NamedAttribute.accept(Node.java:
1810)
at org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2163)
at org.apache.jasper.compiler.Node$Visitor.visitBody(Node.java:2213)
at org.apache.jasper.compiler.Validator$ValidateVisitor.visit
(Validator.java:716)
at org.apache.jasper.compiler.Node$CustomTag.accept(Node.java:1441)
at org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2163)
at org.apache.jasper.compiler.Node$Visitor.visitBody(Node.java:2213)
at org.apache.jasper.compiler.Node$Visitor.visit(Node.java:2219)
at org.apache.jasper.compiler.Node$Root.accept(Node.java:456)
at org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2163)
at org.apache.jasper.compiler.Validator.validate(Validator.java:1475)
at org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:
214)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:470)
at org.apache.jasper.JspC.processFile(JspC.java:779)
at org.apache.jasper.JspC.execute(JspC.java:908)
at com.google.appengine.tools.development.LocalJspC.main
(LocalJspC.java:17)
Exception in thread main org.apache.jasper.JasperException:
java.lang.NullPointerException
at org.apache.jasper.JspC.processFile(JspC.java:806)
at org.apache.jasper.JspC.execute(JspC.java:908)
at com.google.appengine.tools.development.LocalJspC.main
(LocalJspC.java:17)
Caused by: java.lang.NullPointerException
at org.apache.jasper.compiler.Validator$ValidateVisitor.getMethod
(Validator.java:1269)
at org.apache.jasper.compiler.Validator
$ValidateVisitor.processSignature(Validator.java:1257)
at org.apache.jasper.compiler.Validator$ValidateVisitor.access$400
(Validator.java:295)
at org.apache.jasper.compiler.Validator$1FVVisitor.visit
(Validator.java:1248)
at org.apache.jasper.compiler.ELNode$Function.accept(ELNode.java:122)
at org.apache.jasper.compiler.ELNode$Nodes.visit(ELNode.java:193)
at org.apache.jasper.compiler.ELNode$Visitor.visit(ELNode.java:234)
at org.apache.jasper.compiler.ELNode$Root.accept(ELNode.java:53)
at org.apache.jasper.compiler.ELNode$Nodes.visit(ELNode.java:193)
at org.apache.jasper.compiler.Validator
$ValidateVisitor.validateFunctions(Validator.java:1252)
at org.apache.jasper.compiler.Validator$ValidateVisitor.visit
(Validator.java:593)
at org.apache.jasper.compiler.Node$ELExpression.accept(Node.java:896)
at org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2163)
at org.apache.jasper.compiler.Node$Visitor.visitBody(Node.java:2213)
at org.apache.jasper.compiler.Validator$ValidateVisitor.visit
(Validator.java:564)
at org.apache.jasper.compiler.Node$NamedAttribute.accept(Node.java:
1810)
at

Re: [appengine-java] Secure JSP

You can do this with deployment descriptions or servlet filters. Here
documentation about configuring web.xml to do this:

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

On Sun, Jan 31, 2010 at 2:20 PM, Scott gocards...@gmail.com wrote:

 I have 1 jsp in my app that I want to secure and make people login
 with their google accounts in order to see the page.  Is this possible
 and if so how?

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[appengine-java] Re: Does precompilation work ?

2010-02-01 Thread tomekc

Thanks for your reply. Unfortunately, the problem still occurs.
The same error desription: 503 Service Unavailable...
If precompilation is set to false then application is deployed without
any problems.

On Feb 1, 5:02 am, Peter Liu tinyee...@gmail.com wrote:
 In my experience deployment sometimes fail with variety of reasons.
 Sometimes it says precompiling starts and eventually time out. The
 console will suggest you to turn off precompilation, but if you try
 deploy again, it will work.

 My suggestion is keep trying.

 On Jan 30, 11:46 am, tomekc to...@ceszke.com wrote:

  Hi All,

  does precompilation work for you ?
  I'm trying a few times deploy with precompilation but still get an
  exception:

  java.io.IOException: Precompilation failed.  Consider adding
  precompilation-enabledfalse/precompilation-enabled to your
  appengine-web.xml and trying again.
  Unable to update app: Precompilation failed.  Consider adding
  precompilation-enabledfalse/precompilation-enabled to your
  appengine-web.xml and trying again.
  Please see the logs [/var/folders/XC/XCZRRBVPHbSTigao7dR+ek+++TI/-Tmp-/
  appcfg8627681542400368916.log] for further information.

  in that log I have:

  Unable to update:
  java.io.IOException: Precompilation failed.  Consider adding
  precompilation-enabledfalse/precompilation-enabled to your
  appengine-web.xml and trying again.
  ...cut...
  Caused by: java.io.IOException: Error posting to 
  URL:http://appengine.google.com/api/appversion/precompile?app_id=Xve...
  503 Service Unavailable

  Try Again (503)
  An unexpected failure has occurred. Please try again.

          at com.google.appengine.tools.admin.ServerConnection.send
  (ServerConnection.java:143)
          ...cut...
  503 Service Unavailable

  Try Again (503)
  ...cut

  I ask because maybe it is temporary problem ?

   Regards, tomek.

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[appengine-java] Re: NPE compiling a JSP

2010-02-01 Thread Nacho Coloma

For the record, one of the functions defined in the TLD was missing
the function-class and function-signature, and that was causing the
NPE.

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Re: [appengine-java] production memcache grabTail namespace isolation broken

I'll raise the issue with some other members of the team, but it seems like
this is working as expected. A memcache namespace is nothing more than a
prefix applied to a memcache key. There's no true partitioning mechanism
within memcache. grabTail simply returns the item that would be expired by
the LRU mechanism if memcache needed more space. There isn't a different
queue per namespace, only a queue for global expirations.

On Mon, Feb 1, 2010 at 4:29 AM, phraktle phrak...@gmail.com wrote:

Hi,

On production, grabTail returns objects from other namespaces. This is
a significant problem that
makes grabTail (thus queue-like usage) unusable.

I filed this as a bug, with a very simple example here:
http://code.google.com/p/googleappengine/issues/detail?id=2706

Can you please look into this? I don't even see a workaround that I
can implement in the meantime...

Thanks,
Viktor

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[appengine-java] memcache SerializationException

2010-02-01 Thread chiappone

I have hit the wall in trying to figure out what I am doing wrong in
my GAE GWT application.  I am trying to use memcache to get a list of
serializable objects out of the cache in a service.  It seems to put
them fine, and I can see them being pulled from cache in the debugger
but I end up getting the following exception:

This is the call to pull the object out of cache:
ListModel ecDevices = (ListModel) cache.findInCache(partitionKey);
if(ecDevices != null  ecDevices.size()  0){
log.info(Returning devices from cache);
return ecDevices;
}...

SEVERE: [1265057364142000] javax.servlet.ServletContext log: Exception
while dispatching incoming RPC call
com.google.gwt.user.client.rpc.SerializationException:
java.lang.reflect.InvocationTargetException
at
com.google.gwt.user.server.rpc.impl.ServerSerializationStreamWriter.serializeWithCustomSerializer
(ServerSerializationStreamWriter.java:760)
at
com.google.gwt.user.server.rpc.impl.ServerSerializationStreamWriter.serializeImpl
(ServerSerializationStreamWriter.java:723)
at
com.google.gwt.user.server.rpc.impl.ServerSerializationStreamWriter.serialize
(ServerSerializationStreamWriter.java:612)
at
com.google.gwt.user.client.rpc.impl.AbstractSerializationStreamWriter.writeObject
(AbstractSerializationStreamWriter.java:129)
at com.google.gwt.user.server.rpc.impl.ServerSerializationStreamWriter
$ValueWriter$8.write(ServerSerializationStreamWriter.java:152)
at
com.google.gwt.user.server.rpc.impl.ServerSerializationStreamWriter.serializeValue
(ServerSerializationStreamWriter.java:534)
at com.google.gwt.user.server.rpc.RPC.encodeResponse(RPC.java:609)
at com.google.gwt.user.server.rpc.RPC.encodeResponseForSuccess
(RPC.java:467)
at com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse
(RPC.java:564)
at com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall
(RemoteServiceServlet.java:188)
at com.google.gwt.user.server.rpc.RemoteServiceServlet.processPost
(RemoteServiceServlet.java:224)
at com.google.gwt.user.server.rpc.AbstractRemoteServiceServlet.doPost
(AbstractRemoteServiceServlet.java:62)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:713)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:806)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:
487)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter
(ServletHandler.java:1093)
at com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter
(ServeBlobFilter.java:51)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter
(ServletHandler.java:1084)
at
com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter
(TransactionCleanupFilter.java:43)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter
(ServletHandler.java:1084)
at com.google.appengine.tools.development.StaticFileFilter.doFilter
(StaticFileFilter.java:121)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter
(ServletHandler.java:1084)
at org.mortbay.jetty.servlet.ServletHandler.handle
(ServletHandler.java:360)
at org.mortbay.jetty.security.SecurityHandler.handle
(SecurityHandler.java:216)
at org.mortbay.jetty.servlet.SessionHandler.handle
(SessionHandler.java:181)
at org.mortbay.jetty.handler.ContextHandler.handle
(ContextHandler.java:712)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:
405)
at com.google.apphosting.utils.jetty.DevAppEngineWebAppContext.handle
(DevAppEngineWebAppContext.java:70)
at org.mortbay.jetty.handler.HandlerWrapper.handle
(HandlerWrapper.java:139)
at com.google.appengine.tools.development.JettyContainerService
$ApiProxyHandler.handle(JettyContainerService.java:352)
at org.mortbay.jetty.handler.HandlerWrapper.handle
(HandlerWrapper.java:139)
at org.mortbay.jetty.Server.handle(Server.java:313)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:
506)
at org.mortbay.jetty.HttpConnection$RequestHandler.content
(HttpConnection.java:844)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:644)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:381)
at org.mortbay.io.nio.SelectChannelEndPoint.run
(SelectChannelEndPoint.java:396)
at org.mortbay.thread.BoundedThreadPool$PoolThread.run
(BoundedThreadPool.java:442)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke
(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke
(DelegatingMethodAccessorImpl.java:25)

Re: [appengine-java] change timezone of date that is already persisted

The way to do this is to create a series of tasks that update each entity
one by one.

The question I'd like to ask, however, is why you'd want to do this. It's
typically best practice to store time information as UTC and convert as
needed for display or computation due to weirdness with timezones, daylight
saving time, and so forth. Your data will be much easier to internationalize
if it's timezone/locale independent.

On Thu, Jan 28, 2010 at 5:46 PM, mar_novice mariocape1...@gmail.com wrote:

Hi,
Is there a way to change the timezone of the whole app and also
change the timezone of the dates that were already in the datastore
from UTC to a specific timezone?

thanks.

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Developer Programs Engineer, Google App Engine
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[appengine-java] Log4j in production GAE

2010-02-01 Thread Alex

Hello,

Has anyone tried to use Log4j in production GAE? Is it supported?

According to Java GAE docs, only java.util.logging is fully supported.
See http://code.google.com/appengine/docs/java/runtime.html#Logging

[...]
 Any logging framework (such as log4j) that logs to the output or
error streams will work. However, for more fine-grained control of the
Admin Console's log level display, the logging framework must use a
java.util.logging adapter.
[...]

On the other hand, I see that log4j.properties is included into every
project created by GAE Eclipse plugin.

I tried Log4j in a test application and Lo4j is working fine in
development environment. But it doesn't (just does nothing) when I
deploy my test application into live GAE server.

Thanks in advance for any info,
Alex

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[appengine-java] Re: Spring MVC - File upload problem

2010-02-01 Thread Sebastian Cartier

this works also for grails!
Add the library to your lib directory and add
bean id=multipartResolver
 
class=is.hax.spring.web.multipart.StreamingMultipartResolver
/bean
to your applicationContext.xml

For saving the image in a google blob i used the following functions:
@Persistent
Blob imageBlob

byte [] getImage(){
if(imageBlob){
imageBlob.getBytes()
}else{
null;
}
}

void setImage(byte [] imageBytes){
imageBlob = new Blob(imageBytes)
}

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Re: [appengine-java] Log4j in production GAE

2010-02-01 Thread 杨浩

I use slf4j!
use slf4j-log4j when development!
use slf4j-jdk log when GAE Server!(change slf4j-log4j to slf4j-jdk-log
before GAE appcfg update war)


2010/2/2 Alex alexanderko...@gmail.com

 Hello,

 Has anyone tried to use Log4j in production GAE? Is it supported?

 According to Java GAE docs, only java.util.logging is fully supported.
 See http://code.google.com/appengine/docs/java/runtime.html#Logging

 [...]
  Any logging framework (such as log4j) that logs to the output or
 error streams will work. However, for more fine-grained control of the
 Admin Console's log level display, the logging framework must use a
 java.util.logging adapter.
 [...]

 On the other hand, I see that log4j.properties is included into every
 project created by GAE Eclipse plugin.

 I tried Log4j in a test application and Lo4j is working fine in
 development environment. But it doesn't (just does nothing) when I
 deploy my test application into live GAE server.

 Thanks in advance for any info,
 Alex


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Re: [appengine-java] Log4j in production GAE

2010-02-01 Thread Rusty Wright


I also vote for slf4j.  If you need a for example, here's my logback.xml 
file, which lives in the WEB-INF/classes directory:

?xml version=1.0 encoding=UTF-8?

!-- pattern%date{-MM-dd HH:mm:ss.SSS z}, %5level: [%thread] %class.%method.%line: 
%message%n/pattern --
configuration debug=true
   appender class=ch.qos.logback.core.ConsoleAppender 
name=RootConsoleAppender
   layout class=ch.qos.logback.classic.PatternLayout
   pattern%5level: [%thread] %class.%method.%line: 
%message%n/pattern
   /layout
   /appender

   logger name=org.springframework.beans
   level
   value=warn
   /
   /logger

   logger name=org.springframework.transaction
   level
   value=debug
   /
   /logger

   logger name=org.springframework.orm.jdo.JdoTransactionManager
   level
   value=debug
   /
   /logger

!--
   logger 
name=com.google.appengine.repackaged.com.google.common.base.FinalizableReferenceQueue
   level
   value=warn
   /
   /logger
--

   root
   level
   value=info
   /

   appender-ref
   ref=RootConsoleAppender
   /
   /root
/configuration


?? wrote:

I use slf4j!
use slf4j-log4j when development!
use slf4j-jdk log when GAE Server!(change slf4j-log4j to slf4j-jdk-log 
before GAE appcfg update war)



2010/2/2 Alex alexanderko...@gmail.com mailto:alexanderko...@gmail.com

Hello,

Has anyone tried to use Log4j in production GAE? Is it supported?

According to Java GAE docs, only java.util.logging is fully supported.
See http://code.google.com/appengine/docs/java/runtime.html#Logging

[...]
 Any logging framework (such as log4j) that logs to the output or
error streams will work. However, for more fine-grained control of the
Admin Console's log level display, the logging framework must use a
java.util.logging adapter.
[...]

On the other hand, I see that log4j.properties is included into every
project created by GAE Eclipse plugin.

I tried Log4j in a test application and Lo4j is working fine in
development environment. But it doesn't (just does nothing) when I
deploy my test application into live GAE server.

Thanks in advance for any info,
Alex

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Re: [appengine-java] Log4j in production GAE

2010-02-01 Thread Rusty Wright


What I just wrote is probably confusing; I'm using slf4j with logback for 
logging, not log4j.  You don't need a logback.xml configuration file if you're 
using slf4j with log4j (but you will need a log4j configuration file).

I prefer logback because with tomcat you can never be sure that any problems 
with the logging aren't being caused by tomcat's logging (but since gae isn't 
using tomcat that shouldn't be an issue here).  Also, logback is more actively 
supported (and it's written by the same guy who wrote log4j).


Rusty Wright wrote:
I also vote for slf4j.  If you need a for example, here's my 
logback.xml file, which lives in the WEB-INF/classes directory:


?xml version=1.0 encoding=UTF-8?

!-- pattern%date{-MM-dd HH:mm:ss.SSS z}, %5level: [%thread] 
%class.%method.%line: %message%n/pattern --

configuration debug=true
   appender class=ch.qos.logback.core.ConsoleAppender 
name=RootConsoleAppender

   layout class=ch.qos.logback.classic.PatternLayout
   pattern%5level: [%thread] %class.%method.%line: 
%message%n/pattern

   /layout
   /appender

   logger name=org.springframework.beans
   level
   value=warn
   /
   /logger

   logger name=org.springframework.transaction
   level
   value=debug
   /
   /logger

   logger name=org.springframework.orm.jdo.JdoTransactionManager
   level
   value=debug
   /
   /logger

!--
   logger 
name=com.google.appengine.repackaged.com.google.common.base.FinalizableReferenceQueue 


   level
   value=warn
   /
   /logger
--

   root
   level
   value=info
   /

   appender-ref
   ref=RootConsoleAppender
   /
   /root
/configuration


?? wrote:

I use slf4j!
use slf4j-log4j when development!
use slf4j-jdk log when GAE Server!(change slf4j-log4j to slf4j-jdk-log 
before GAE appcfg update war)



2010/2/2 Alex alexanderko...@gmail.com 
mailto:alexanderko...@gmail.com


Hello,

Has anyone tried to use Log4j in production GAE? Is it supported?

According to Java GAE docs, only java.util.logging is fully 
supported.

See http://code.google.com/appengine/docs/java/runtime.html#Logging

[...]
 Any logging framework (such as log4j) that logs to the output or
error streams will work. However, for more fine-grained control of 
the

Admin Console's log level display, the logging framework must use a
java.util.logging adapter.
[...]

On the other hand, I see that log4j.properties is included into every
project created by GAE Eclipse plugin.

I tried Log4j in a test application and Lo4j is working fine in
development environment. But it doesn't (just does nothing) when I
deploy my test application into live GAE server.

Thanks in advance for any info,
Alex

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Re: [appengine-java] Log4j in production GAE

2010-02-01 Thread Rusty Wright


Oops; more stumbling.  I think it's usually Commons Logging that causes 
problems with tomcat, and perhaps elsewhere, not log4j.  slf4j is a Commons 
Logging alternative.


Rusty Wright wrote:
What I just wrote is probably confusing; I'm using slf4j with logback 
for logging, not log4j.  You don't need a logback.xml configuration file 
if you're using slf4j with log4j (but you will need a log4j 
configuration file).


I prefer logback because with tomcat you can never be sure that any 
problems with the logging aren't being caused by tomcat's logging (but 
since gae isn't using tomcat that shouldn't be an issue here).  Also, 
logback is more actively supported (and it's written by the same guy who 
wrote log4j).



Rusty Wright wrote:
I also vote for slf4j.  If you need a for example, here's my 
logback.xml file, which lives in the WEB-INF/classes directory:


?xml version=1.0 encoding=UTF-8?

!-- pattern%date{-MM-dd HH:mm:ss.SSS z}, %5level: [%thread] 
%class.%method.%line: %message%n/pattern --

configuration debug=true
   appender class=ch.qos.logback.core.ConsoleAppender 
name=RootConsoleAppender

   layout class=ch.qos.logback.classic.PatternLayout
   pattern%5level: [%thread] %class.%method.%line: 
%message%n/pattern

   /layout
   /appender

   logger name=org.springframework.beans
   level
   value=warn
   /
   /logger

   logger name=org.springframework.transaction
   level
   value=debug
   /
   /logger

   logger name=org.springframework.orm.jdo.JdoTransactionManager
   level
   value=debug
   /
   /logger

!--
   logger 
name=com.google.appengine.repackaged.com.google.common.base.FinalizableReferenceQueue 


   level
   value=warn
   /
   /logger
--

   root
   level
   value=info
   /

   appender-ref
   ref=RootConsoleAppender
   /
   /root
/configuration


?? wrote:

I use slf4j!
use slf4j-log4j when development!
use slf4j-jdk log when GAE Server!(change slf4j-log4j to 
slf4j-jdk-log before GAE appcfg update war)



2010/2/2 Alex alexanderko...@gmail.com 
mailto:alexanderko...@gmail.com


Hello,

Has anyone tried to use Log4j in production GAE? Is it supported?

According to Java GAE docs, only java.util.logging is fully 
supported.

See http://code.google.com/appengine/docs/java/runtime.html#Logging

[...]
 Any logging framework (such as log4j) that logs to the output or
error streams will work. However, for more fine-grained control 
of the

Admin Console's log level display, the logging framework must use a
java.util.logging adapter.
[...]

On the other hand, I see that log4j.properties is included into 
every

project created by GAE Eclipse plugin.

I tried Log4j in a test application and Lo4j is working fine in
development environment. But it doesn't (just does nothing) when I
deploy my test application into live GAE server.

Thanks in advance for any info,
Alex

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[appengine-java] Struts Validator not working.,

2010-02-01 Thread sats

Am sure this is something that is known to someone in the community to
tell me what am doing wrong. I have the struts validator framework
defined. Appengine compiles, but when am trying to run the app in my
local-host; The request dispatcher object in validator framework is
comin back as a null.

Am I missing something, any guidence or insights???


java.lang.NullPointerException
at
org.apache.struts.chain.commands.servlet.PerformForward.handleAsForward
(PerformForward.java:113)
at org.apache.struts.chain.commands.servlet.PerformForward.perform
(PerformForward.java:96)
at org.apache.struts.chain.commands.AbstractPerformForward.execute
(AbstractPerformForward.java:54)
at org.apache.struts.chain.commands.ActionCommandBase.execute
(ActionCommandBase.java:51)
at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:
190)
at org.apache.commons.chain.generic.LookupCommand.execute
(LookupCommand.java:304)
at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:
190)
at org.apache.struts.chain.ComposableRequestProcessor.process
(ComposableRequestProcessor.java:283)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:
1913)
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:
449)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:693)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:806)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:
487)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter
(ServletHandler.java:1093)
at com.google.appengine.api.blobstore.dev.ServeBlobFilter.doFilter
(ServeBlobFilter.java:51)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter
(ServletHandler.java:1084)
at
com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter
(TransactionCleanupFilter.java:43)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter
(ServletHandler.java:1084)
at com.google.appengine.tools.development.StaticFileFilter.doFilter
(StaticFileFilter.java:121)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter
(ServletHandler.java:1084)
at org.mortbay.jetty.servlet.ServletHandler.handle
(ServletHandler.java:360)
at org.mortbay.jetty.security.SecurityHandler.handle
(SecurityHandler.java:216)
at org.mortbay.jetty.servlet.SessionHandler.handle
(SessionHandler.java:181)
at org.mortbay.jetty.handler.ContextHandler.handle
(ContextHandler.java:712)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:
405)
at com.google.apphosting.utils.jetty.DevAppEngineWebAppContext.handle
(DevAppEngineWebAppContext.java:70)
at org.mortbay.jetty.handler.HandlerWrapper.handle
(HandlerWrapper.java:139)
at com.google.appengine.tools.development.JettyContainerService
$ApiProxyHandler.handle(JettyContainerService.java:352)
at org.mortbay.jetty.handler.HandlerWrapper.handle
(HandlerWrapper.java:139)
at org.mortbay.jetty.Server.handle(Server.java:313)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:
506)
at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete
(HttpConnection.java:830)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:514)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:381)
at org.mortbay.io.nio.SelectChannelEndPoint.run
(SelectChannelEndPoint.java:396)
at org.mortbay.thread.BoundedThreadPool$PoolThread.run
(BoundedThreadPool.java:442)

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[appengine-java] Re: Spring MVC - File upload problem

2010-02-01 Thread Markus Paaso

Hi

I tried it with Grails 1.2.0 and app-engine plugin 0.8.8 but got just
an another error:

java.lang.NoClassDefFoundError: Could not initialize class
org.apache.commons.fileupload.disk.DiskFileItem
at org.apache.commons.fileupload.disk.DiskFileItemFactory.createItem
(DiskFileItemFactory.java:196)
at org.apache.commons.fileupload.FileUploadBase.parseRequest
(FileUploadBase.java:358)
at
org.apache.commons.fileupload.servlet.ServletFileUpload.parseRequest
(ServletFileUpload.java:126)
at
org.springframework.web.multipart.commons.CommonsMultipartResolver.parseRequest
(CommonsMultipartResolver.java:155)

my controller:

def imageInstance = new Image(imageParams)
def f = request.getFile('imageData')
imageInstance.imageData = f.getBytes()
Image.withTransaction {
if(imageInstance.save(flush:true)) {
flash.message = Image ${imageInstance.id} created
redirect(action:show,id:imageInstance.id)
}
else {
render(view:'create',model:[imageInstance:imageInstance])
}
}


and domain-class:

import javax.persistence.*;
// import com.google.appengine.api.datastore.Key;

@Entity
class Image implements Serializable {

@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
Long id
byte[] imageData

static constraints = {
id visible:false
}

}

It seems like the multipart resolver is not replaced with the new one.
I placed the jar file into myApplication/lib and GRAILS_HOME/lib
directories.
Maybe I didn't place the jar to the right directory?
Would you like to tell more about how you got it to work?


Markus


On 2 helmi, 00:00, Sebastian Cartier sebi.cart...@gmail.com wrote:
 this works also for grails!
 Add the library to your lib directory and add
     bean id=multipartResolver

 class=is.hax.spring.web.multipart.StreamingMultipartResolver
     /bean
 to your applicationContext.xml

 For saving the image in a google blob i used the following functions:
         @Persistent
         Blob imageBlob

         byte [] getImage(){
                 if(imageBlob){
                         imageBlob.getBytes()
                 }else{
                         null;
                 }
         }

         void setImage(byte [] imageBytes){
                 imageBlob = new Blob(imageBytes)
         }

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[appengine-java] queue task timeout

2010-02-01 Thread AJ Chen

I'm using queued tasks to fetch feeds, one feed per task. each task takes
about a couple of seconds. but, the tasks get unexpected timeout easily with
the following error message. any idea how task timeout happens? is it
possible to control the timeout period? thanks,

Feb 2, 2010 7:00:54 AM org.quartz.core.JobRunShell run
SEVERE: Job feed-fetch.task4 threw an unhandled Exception:
com.google.apphosting.api.ApiProxy$ApplicationException: ApplicationError:
2: Received exception executing http method POST against URL
http://127.0.0.1:/task: Timeout waiting for connection
at
com.google.appengine.api.urlfetch.dev.LocalURLFetchService.fetch(LocalURLFetchService.java:223)
at
com.google.appengine.api.labs.taskqueue.dev.UrlFetchJob.execute(UrlFetchJob.java:53)
at
com.google.appengine.api.labs.taskqueue.dev.UrlFetchJob.execute(UrlFetchJob.java:46)
at org.quartz.core.JobRunShell.run(JobRunShell.java:195)
at
org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:520)

-aj--
AJ Chen, PhD
Chair, Semantic Web SIG, sdforum.org
http://web2express.org
@web2express on twitter
Palo Alto, CA, USA
650-283-4091
*Monitoring social media in real time*

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[google-appengine] Chat Time transcript for January 20, 2010

2010-02-01 Thread Jason (Google)

Two Wednesday back, the App Engine team hosted the latest session of
its bimonthly IRC office hours. A transcript of the session and a
summary of the topics covered is provided below. The next session will
take place this coming Wednesday, February 3rd from 7:00-8:00 p.m. PST
in the #appengine channel on irc.freenode.net.

- Jason

--SUMMARY---
- Q: Should you split a single entity into two or more entities if one
or more properties are updated frequently, e.g. per request? A: No,
but if you expect to update a single entity or entity group more than
once per second, you should consider sharding to avoid datastore
contention (http://code.google.com/appengine/articles/scaling/
contention.html). You generally don't need to split entities, although
you can do so to save bandwidth if your entities contain several large
properties that only need to be accessed occasionally. [9:01-9:06]

- Q: Does the 30-second request deadline applied during Blobstore
uploads? A: No. In general, time spent by the user doesn't count
towards your execution time limit. [9:07-9:08]

- Discussion on the maximum length of task queue parameters.
[9:10-9:12]

- Discussion on bulkloader dump and restore, whether there are any
plans to allow for clearing a single datastore kind only, and whether
tasks or remote_api is the best mechanism for clearing the datastore
[9:16-9:20, 9:24-9:25]

- Q: How can one determine the string-encoded key of a given entity
for another application, e.g. when updating foreign keys ahead of a
bulk upload to another datastore? A: This could change going forward,
but for now you can supply the '_app_id_namespace' argument to
db.Key.from_path. Or instead of using string-encoded keys, you can use
Key.to_xml which provides a transparent encoding. Bear in mind that
App Engine currently doesn't allow for referencing entities in other
applications, though this could change in the next release.
[9:24-9:25, 9:27-9:28, 9:32, 9:35-9:36]

- Discussion on whether, when building a master-detail relationship
(e.g. orders and items), it's better to store all order information in
a single entity or to use an individual entity for each item in the
order. [9:27-9:35]

- Q: If you're new to App Engine, which runtime should you start with?
A: Pick the runtime language most familiar to you to minimize the
amount of new learning that you have to do all at once -- even though
many use standard APIs, App Engine's various services will take time
to master, especially the datastore. [9:35-9:38]

- Q: For list properties, is the name of the property stored for each
item (e.g. N times for N items) even when its unindexed? A: Yes -- the
datastore is schemaless, so a list foo=[bar,baz] is actually stored as
two properties with the same name: foo=bar and foo=baz. Hence, each
item in the list requires the name to be stored with it. See the
article at http://code.google.com/appengine/articles/storage_breakdown.html
which explains exactly what gets stored for all entity and index rows.
[9:40-9:43, 9:52-9:56, 9:59-10:01]

- Discussion of deferred.defer, its ability to schedule tasks to be
executed during off-peak hours, and its relation to the core product.
[9:41-9:46, 9:50]


--FULL TRANSCRIPT---
[09:00am] nickjohnson: Welcome to the fortnightly App Engine developer
chat! With me today are Jason and Ikai.
[09:00am] nickjohnson: And Ryan
[09:00am] ikai_google: Hi everybody!
[09:00am] ryan_google: and me! (...something)
[09:01am] dennis_tw: I have a question about entities that are changed
often (eg: changed on every user action.  Like modification time or
view count).  I'm thinking of separating them out into a separate
entity so that that 'high frequency' entity is small and can be moved
between the datastore and my app with little overhead.  Is that a
reasonable entity design?
[09:01am] ikai_google: *crickets*
[09:02am] nickjohnson: dennis_tw: Optimising to minimize the amount of
unwanted data you're moving is a good idea. It doesn't have to relate
specifically to how frequently it's updated, though.
[09:02am] mcrady: any plans to support stretching of images?
[09:02am] ikai_google: dennis_tw: In the past, even outside of App
Engine, I've used a design where I do frequent writes to MemCache and
flush. Of course, you run the risk of some data loss
[09:03am] dennis_tw: cool
[09:03am] dennis_tw: I'm also wondering if 'small entities' and
'medium sized entities' have pretty much the same overhead.  At what
point does it become irrelevant how small the entity is?  is there a
minimum transfer size?
[09:03am] ikai_google: mcrady: Do you mean resizing to a larger image?
[09:03am] ryan_google: +1 to ikai and nick's points. i'd also note
that entity size, in bytes or number of properties or whatever,
generally doesn't matter in these cases, but you definitely want to
take chances to coalesce, shard, etc to avoid writing to a single
entity (or group)

[google-appengine] User is online/offline

2010-02-01 Thread sahid

Hello,

I seek a best way for know if my user is online and when he is
disconnected
You have an idea?

Thanks!

Sahid

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[google-appengine] ancestor/subquery

2010-02-01 Thread alf

well someboy can help me.

we have tow entity

A is parent of B we can perform a filter over B and get in my ej. 3000
ancestor´s keys how can performan other sub query based in this 3000k
to apply second filter but not using a For Each and re-query one  by
one.

many thanks
alberto

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[google-appengine] Best practice for caching frequent datastore reads

2010-02-01 Thread k3xji

Hi all,

I am thinking of away to imlement a generic way for my frequently
readed data models. The access pattern for these models is that they
will be retrieved very frequently but updated maybe once in a month.
Think aboiut a game site. Game categories will not and should not be
updated at the time they are created. BUt these will be used in my
front page so every page request will query the db for all the game
categories. So best way is to memcache these entries.

So, what you prefere as a best practice for these kind of things? I am
thinking of a generic class that takes a model as a parameter and
hooks the put() method of it. If model is somehow changed, I will
update a dirty flag and retrive the contents from the DS, otherwise
get it from the memcache. But not sure, how to hook all db
operationsof a model, there are many ways to do that and I am assuming
there must be a better way to do this, maybe someone else has already
done this work? Is there a generic way to do this?

Thanks,

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[google-appengine] Re: Is GAE the right choice for e-commerce?

2010-02-01 Thread Mike

Hi NG

We are running our business on AppEngine. (Search Shoes of Prey on
Google to find us.)

So far, it is going really well. AppEngine is a delight to develop on,
and you can't argue with the cost. (I've only been charged $0.01 so
far. Although, as I've posted in another thread, the small charge by
itself was problematic for me.) :)

I had to write the entire ecommerce platform from scratch - which
suited me given the very custom nature of our business - however you
may not be as keen as me. It really depends on your business.

We choose AppEngine primarily because a) 2 of us used to work at
Google, and we love AppEngine b) if we start serving a lot of traffic/
bandwidth we want something scalable. As I said earlier as well, the
API is really nice and makes developing a breeze.

The only thing I wish AppEngine had was HTTPS support for custom
domains, and I'm hopeful that one day it will be supported. There are
workarounds too. Once AppEngine has HTTPS support and a few open-
source ecommerce software packages, it will be a really great platform
I would think.

Good luck.

Mike



On Jan 31, 4:31 pm, decuman ngn...@gmail.com wrote:
 Hello,

 At the moment I'm thinking of building a small/medium online selling
 business and before investing more of my time (and money) into GAE
 based development it would be just great to know some experienced
 users and expert thoughts and opinions on it.

 As far as I can see (after reading related books, articles and message
 group threads) GAE is just a perfect solution for prototyping and
 building a social networking applications (Blogs, Chats, Galleries,
 Message boards etc.) which requires tracking a lot of users and
 storing data... which is great. But there is quite a few (literally
 none) of nice business/e-commerce applications with decent product
 galleries, shopping carts and checkout functionality and payment
 service integration. Also there are lots of complains and negative
 responses pointing to big GAE functional limitations (which are not
 going to improve soon or ever) and overall practicability of using it
 as a reliable e-commerce platform. In particular (PayPal, Google
 Checkout integration)

 It wasn't a very deep and thoughtful investigation but the outlined
 above is just my personal subjective feeling so far. I would really
 love to know the opinion and thoughts on this matter from GAE experts.
 Shell I move forward with Google App Engine development or it would be
 move wise to consider some other solution?

 Thanks in advance!
 NG

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[google-appengine] Re: High latency with custom domain

2010-02-01 Thread Flips

My dedicated server has got a really bad latency again. It is really
frustrating.

Dedicated Server (Germany) - custom domain
 1  xxx (xxx)  0.285 ms  0.233 ms  0.228 ms
 2  xe-0-1-0.cr-nashira.cgn4.hosteurope.de (80.237.129.13)  0.405 ms
0.352 ms  0.350 ms
 3  xe-0-0-0.cr-polaris.fra1.hosteurope.de (80.237.129.110)  2.927 ms
2.937 ms  2.888 ms
 4  de-cix20.net.google.com (80.81.193.108)  4.106 ms  4.043 ms  4.433
ms
 5  209.85.255.176 (209.85.255.176)  4.238 ms 209.85.255.178
(209.85.255.178)  4.162 ms  4.248 ms
 6  72.14.232.105 (72.14.232.105)  14.235 ms  14.068 ms 72.14.233.104
(72.14.233.104)  13.431 ms
 7  216.239.43.90 (216.239.43.90)  91.730 ms 72.14.239.94
(72.14.239.94)  94.268 ms  94.815 ms
 8  66.249.95.149 (66.249.95.149)  105.794 ms 216.239.48.69
(216.239.48.69)  111.983 ms 66.249.95.149 (66.249.95.149)  108.316 ms
 9  72.14.232.213 (72.14.232.213)  124.573 ms  106.259 ms  107.897 ms
10  209.85.253.157 (209.85.253.157)  117.649 ms  119.529 ms  109.063
ms
11  yw-in-f121.1e100.net (74.125.47.121)  108.389 ms  107.146 ms
107.318 ms

Dedicated Server (Germany) - *.appspot.com
 1  xxx (xxx)  0.298 ms  0.244 ms  0.203 ms
 2  xe-0-1-0.cr-nashira.cgn4.hosteurope.de (80.237.129.13)  0.414 ms
0.365 ms  0.344 ms
 3  xe-0-0-0.cr-polaris.fra1.hosteurope.de (80.237.129.110)  2.994 ms
2.921 ms  2.921 ms
 4  de-cix20.net.google.com (80.81.193.108)  43.233 ms  3.985 ms
4.202 ms
 5  209.85.255.176 (209.85.255.176)  4.563 ms  4.850 ms 209.85.255.178
(209.85.255.178)  17.169 ms
 6  209.85.254.112 (209.85.254.112)  4.978 ms 209.85.254.116
(209.85.254.116)  4.411 ms  4.354 ms
 7  209.85.254.126 (209.85.254.126)  5.018 ms 209.85.254.134
(209.85.254.134)  4.587 ms  4.167 ms
 8  fx-in-f141.1e100.net (74.125.39.141)  4.683 ms  5.028 ms  4.960 ms

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[google-appengine] Re: Interactive console -- users.get_current_user() always returns None

2010-02-01 Thread Wooble

You'll need to use the dashboard at appengine.google.com/a/
darkflowstudios.com if you registered with your Google Apps account.

On Jan 29, 6:09 pm, BrianDFS br...@darkflowstudios.com wrote:
 Hmmm, there are no cookies listed for localhost:8080.  Maybe I'm
 misunderstanding how to log in locally then.

 Another thing I've noticed is that when I log into App Engine via the
 Google Apps portal athttps://appengine.google.com/a/YOURDOMAIN.COM,
 it takes me to the /start page where it prompts me to create my first
 application which then prompts me to verify my account via sms.
 However, I'm pretty sure I've already verified my account via sms.  If
 I try to enter my phone number anyway, it fails with: The phone
 number has been sent too many messages or has already been used to
 confirm an account.

 On Jan 29, 3:18 pm, Nick Johnson (Google) nick.john...@google.com
 wrote:

   On Fri, Jan 29, 2010 at 10:15 PM, BrianDFS 
  br...@darkflowstudios.comwrote:

   Hi Nick,

   I'm talking about the interactive development console located at:
  http://localhost:8080/_ah/admin/interactive

   No matter what I do or which google account I'm logged into, it never
   thinks I'm logged in.

  The local admin console only pays attention to what you logged into on
  localhost, using the local users stub. You can't log into Google accounts
  with it.

  If that's what you're meaning, can you check your browser's cookies for
  cookies set on localhost:8080, and report what you see there?

  -Nick Johnson

   On Jan 29, 12:17 pm, Nick Johnson (Google) nick.john...@google.com
   wrote:
Hi Brian,

Which interactive console are you referring to?

-Nick

On Fri, Jan 29, 2010 at 3:01 PM, BrianDFS br...@darkflowstudios.com
   wrote:
 I'm completely new to GAE as of about 3 days ago.  I'm working on an
 app based off some pre-existing source code.  Everything seemed to be
 moving along nicely until yesterday when suddenly it seemed as though
 I was no longer logged in in my test app.  To confirm this I tried the
 hello world or hello user default program at the interactive
 console and sure enough, users.get_current_user() always returns None
 now.  I'm tried clearing my browser (Chrome) cache and history, I've
 also tried other browsers, I'm at a loss.

 I'm using GAE with my Google Apps account.

 Any tips, suggestions, or help would be greatly appreciated.  Thanks.

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Re: [google-appengine] Re: Could not guess mimetype for favicon

2010-02-01 Thread djidjadji

I have changed the mimetypes.py file that is in the Python25 directory.
Add a line that handles the ico file extension.

2010/1/31 风笑雪 kea...@gmail.com:
 Put favicon.ico section before docs section.

 2010/1/31 samwyse samw...@gmail.com:
 I moved the mime_type to the end, but it's still not working:

 handlers:
 - url: /docs
  static_dir: docs

 - url: /favicon\.ico
  static_files: docs/favicon.ico
  upload: docs/favicon.ico
  mime_type: image/x-icon

 - url: /robots\.txt
  static_files: docs/robots.txt
  upload: docs/robots.txt
  mime_type: text/plain


 Scanning files on local disk.
 Initiating update.
 Could not guess mimetype for docs/favicon.ico.  Using application/
 octet-stream.
 Could not guess mimetype for docs/index_files/themedata.thmx.  Using
 application/octet-stream.
 Cloning 7 static files.
 Cloning 13 application files.
 Deploying new version.


 On Jan 23, 11:18 pm, 风笑雪 kea...@gmail.com wrote:
 - url: /favicon\.ico
   static_files: img/favicon.ico
   upload: img/favicon.ico
   mime_type: image/x-icon

 2010/1/23samwysesamw...@gmail.com:



  Using GAE Launcher, I get the following message whenever I deploy my
  app:
  Could not guess mimetype for docs/favicon.ico.  Using application/
  octet-stream.

  My appl.yaml file contains this:

  - url: /favicon\.ico
   mime_type: image/vnd.microsoft.icon
   static_files: docs/favicon.ico
   upload: docs/favicon.ico

  About Launcher... returns this:
  Your Google App Engine SDK is up to date.

  Version:
  release: 1.3.0
  timestamp: 1259695715
  api_versions: ['1']

  Any ideas?  Thanks!

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[google-appengine] Re: why my datastore nearly be full?

2010-02-01 Thread Wooble

The stored data quota in the dashboard isn't updated in realtime, so
you wouldn't see the change immediately even if that is the problem.
I'd suspect some buggy indexes or something, though, if that really
was your only entity.  For one thing, you can't have a single entity
larger than 1MB, and it would be tough to use 949 MB in datastore
overhead even if you wanted to.

On Jan 31, 3:05 am, saintthor saintt...@gmail.com wrote:
 i deleted the only entity of ltWords. the Total Stored Data is still
 95%!

 who can help me?

 On 1月30日, 下午8时42分, Sylvain sylvain.viv...@gmail.com wrote:

  maybe this bug ?

 http://code.google.com/p/googleappengine/issues/detail?id=631

  On Jan 30, 9:27 am, saintthor saintt...@gmail.com wrote:

   in quota details, i notic my Total Stored Data is 95%. it shouldn' t
   be so large.

   in Datastore Statistics, Size of all entities is only 9MB.

   all that happened from about 4% to 95% is i updated an entity for
   about 200 times. the class is:

   class ltWords( db.Model ):
   WordsDText = db.TextProperty()

   after this, there is only one entity of ltWords and the WordsDText is
   no longer than 1MB. why does it take more than 90% of my datastore
   quota and how to release it?

   for  saintthor.appspot.com

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[google-appengine] Android app to monitor appengine quotas

2010-02-01 Thread Hugo Visser

Hi,

I've released a little android app to monitor your app engine quotas.
It's called Engine Watch and is available from the android market. See
my blog at http://code.neenbedankt.com for more details. I hope it's
useful to some of you too :)

Hugo

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[google-appengine] How memcache work?

2010-02-01 Thread masterzim

In official documentation I didn't find nothing about memcache
transaction. What happens if I access to memcache from different
request( this is save? ) , is transactions atomic? This will be great
if somebody can explain this.

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[google-appengine] Re: Datastore WRITE operations are failing (9.30AM US/Central)

2010-02-01 Thread Blake

agreed

On Jan 30, 2:32 pm, mete meteba...@gmail.com wrote:
 That is a very strange situation especially for someone considering to
 use the service in production like me. Can google people give details
 or comment on the issue ?

 On Jan 30, 5:55 pm, Murali imural...@gmail.com wrote:

  Its back now. Write operations are going through.  (9.55AM)

  Thanks,
  Murali

  On Jan 30, 9:45 am, Murali imural...@gmail.com wrote:

   App Engine team,

   At 9.30AM (US/Central), all Data store writes are failing. No
   exception is thrown, so error handling in the app did not produce any
   logs to capture. It appears to be successful, but entries added are
   not found the data store. The problem still persists at 9.45.

   Status athttp://code.google.com/status/appengineshowseverything
   normal.

   Could you please have a look.

   Thanks,
   Murali

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[google-appengine] Re: why my datastore nearly be full?

2010-02-01 Thread Hugo Visser

I'm seeing the same thing. I got hardly anything stored in the
datastore, but my quota is at 50% right now. I did have some stuff in
the memcache however.
This morning I flushed memcache and deleted all entities in the
datastore but the quota usage is still going up. I'm waiting to see
what happens after the daily reset.

Hugo

On Feb 1, 5:27 pm, Wooble geoffsp...@gmail.com wrote:
 The stored data quota in the dashboard isn't updated in realtime, so
 you wouldn't see the change immediately even if that is the problem.
 I'd suspect some buggy indexes or something, though, if that really
 was your only entity.  For one thing, you can't have a single entity
 larger than 1MB, and it would be tough to use 949 MB in datastore
 overhead even if you wanted to.

 On Jan 31, 3:05 am, saintthor saintt...@gmail.com wrote:

  i deleted the only entity of ltWords. the Total Stored Data is still
  95%!

  who can help me?

  On 1月30日, 下午8时42分, Sylvain sylvain.viv...@gmail.com wrote:

   maybe this bug ?

  http://code.google.com/p/googleappengine/issues/detail?id=631

   On Jan 30, 9:27 am, saintthor saintt...@gmail.com wrote:

in quota details, i notic my Total Stored Data is 95%. it shouldn' t
be so large.

in Datastore Statistics, Size of all entities is only 9MB.

all that happened from about 4% to 95% is i updated an entity for
about 200 times. the class is:

class ltWords( db.Model ):
WordsDText = db.TextProperty()

after this, there is only one entity of ltWords and the WordsDText is
no longer than 1MB. why does it take more than 90% of my datastore
quota and how to release it?

for  saintthor.appspot.com

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[google-appengine] Re: security in task queue servlets

2010-02-01 Thread fhtino

IMHO you're on a wrong way.  Use web.xml contrains and no other
things.
HttpHeaders are very easy to create and send with a http request.

   fabrizio


On Jan 30, 10:07 pm, Patrick Linskey plins...@gmail.com wrote:
 ...
 a curl-sourced request. Is this a safe assumption to rely on? Are
 there plans to document a reliable way to ensure servlet security in a
 task queue environment? Is there something else that I'm missing?


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[google-appengine] Re: Best practice for caching frequent datastore reads

2010-02-01 Thread Satoshi

First of all, if you really care about the performance, store those
data in static directly and let the app engine directly return it (and
update the whole app when you need to update the data).

Second, please be aware that caching object may not be the most
efficient way. In many cases, caching the final output (typically HTML
file or JSON file) in memcache gives you the best performance. I am
using this technique in all my projects, and it is working very
well.

If you still want to cache objects, here is my suggestion.

While creating a fancy generic class that automatically performs
caching seems clever and elegant, that kind of architecture tends to
create more headache in future when the project gets bigger and more
engineers are involved. I much prefer to hook get/put accesses
explicitly for each class.

Here is a piece of code I am using in my project (cacheman is my
memcache name space manager where I can easily control the namespace -
which is a good practice).

SEC_USER = 60*60 # one hour

@classmethod
def get_user(cls, uid):
cache_key = cacheman.user(uid) # which performs (/user/
%s %s uid)
user = memcache.get(cache_key)
if user:
return user
user = cls.get_by_key_name(uid)
if user:
memcache.set(cache_key, user, SEC_USER)
return user

def put(self):
cache_key = cacheman.user(self.key().name())
memcache.set(cache_key, self, SEC_USER)
return super(User, self).put()

Please notice that I am overriding put() method so that I always call
memcache.set, but NOT overriding get_key_by_name (this is just my
preferred coding style, which you don't need to follow).

Please be aware that you need to just get keys when you perform query,
and use the accessor (in my case get_user) to get the actual object.

Satoshi

On Feb 1, 3:40 am, k3xji sum...@gmail.com wrote:
 Hi all,

 I am thinking of away to imlement a generic way for my frequently
 readed data models. The access pattern for these models is that they
 will be retrieved very frequently but updated maybe once in a month.
 Think aboiut a game site. Game categories will not and should not be
 updated at the time they are created. BUt these will be used in my
 front page so every page request will query the db for all the game
 categories. So best way is to memcache these entries.

 So, what you prefere as a best practice for these kind of things? I am
 thinking of a generic class that takes a model as a parameter and
 hooks the put() method of it. If model is somehow changed, I will
 update a dirty flag and retrive the contents from the DS, otherwise
 get it from the memcache. But not sure, how to hook all db
 operationsof a model, there are many ways to do that and I am assuming
 there must be a better way to do this, maybe someone else has already
 done this work? Is there a generic way to do this?

 Thanks,

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Re: [google-appengine] security in task queue servlets

2010-02-01 Thread Eli Jones

If you have a compelling reason for really locking down the task queue url
(and Require Admin login isn't enough), you could create a mechanism that
creates a task name for each queued task.. and the task verifies that its
name is correct.

You could have the task use the X-AppEngine-TaskName header to check its
name..

So.. when you add a task to the queue.. you do something like this:

taskName = getUniqueTaskName()
nameHash = getHash(taskName)

taskqueue.add(url= '/myTaskQueue', countdown = 0,
name = taskName,
params = {'nameHash' : nameHash})

and.. in the first part of the /myTaskQueue code.. you could have it verify
that the 'nameHash' param is equal to getHash() of the TaskName you grab
from the header..

On Sat, Jan 30, 2010 at 4:07 PM, Patrick Linskey plins...@gmail.com wrote:

Hi,

I'd like to programmatically ensure that my task queue servlets are
only invoked via the task queue. I've got a security constraint in my
web.xml, but I'd like to also check in code to avoid any potential mis-
configuration in the future.

Is there any supported means to do such a check?

I tried looking at the contents of the HttpServletRequest (isUserInRole
(), getAuthType(), getUserPrincipal(), getRemoteName()), to no avail.
I also tried UserServiceFactory.getUserService().isAdmin(), but
received an exception informing me that no user was logged in.

I can see that there are a number of task queue-specific HTTP headers.
Currently, I'm checking that X-AppEngine-TaskRetryCount is present,
and if so, assuming that the request has come from the task queue and
that it's therefore safe to process. Empirically, it looks like GAE
strips out the X-AppEngine-TaskRetryCount header when I specify it in
a curl-sourced request. Is this a safe assumption to rely on? Are
there plans to document a reliable way to ensure servlet security in a
task queue environment? Is there something else that I'm missing?

Also, in an ideal world, it'd be nice if request.isUserInRole(admin)
would return true at the appropriate times.

Thanks,

-Patrick

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Re: [google-appengine] How can I define an admin user for my application?

2010-02-01 Thread Robert Kluin

Add/Invite them as developers to the application.

Robert






On Mon, Feb 1, 2010 at 8:15 AM, Tiago Melo tiagohar...@gmail.com wrote:
 Hi all.

 I have a simple app deployed at GAE and I want to restrict some URL's
 to admin users only. But how can I define which users are
 administrators? I've searched over the admin console and didn't find
 anything.

 Thanks in advance.

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Re: [google-appengine] Re: How memcache work?

2010-02-01 Thread Patrick Twohig

I believe that the memcache service is implemented on top of this. I could
be wrong, though: http://memcached.org/

On Mon, Feb 1, 2010 at 10:31 AM, Satoshi satoshi.nakaj...@gmail.com wrote:

There is no transaction mechanism around memcache. Although it is
technically possible to use an entity group (or groups) on the
datastore to create a transaction mechainsm on top of memcache, it
does not make sense to use slower mechanism (datastore) on top of
faster mechanism (memcache).

Generally speaking, you should use memcache to return a snapshot of
data to the client. If you need transactions, go directly to the
datastore.

Satoshi

On Feb 1, 6:35 am, masterzim masterzim@googlemail.com wrote:
In official documentation I didn't find nothing about memcache
transaction. What happens if I access to memcache from different
request( this is save? ) , is transactions atomic? This will be great
if somebody can explain this.

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San Diego, CA 92163-4161

Office: 619.862.2890 x100
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Re: [google-appengine] security in task queue servlets

2010-02-01 Thread Patrick Twohig

I believe that the App Engine injects the pertinent information from the
Users service. For instance, when you call
HttpServletRequest.getUserPrinicpal(), you're getting values injected by the
UsersService.

On Mon, Feb 1, 2010 at 11:02 AM, Eli Jones eli.jo...@gmail.com wrote:

You could have the task use the X-AppEngine-TaskName header to check its
name..

So.. when you add a task to the queue.. you do something like this:

taskName = getUniqueTaskName()
nameHash = getHash(taskName)

taskqueue.add(url= '/myTaskQueue', countdown = 0,
name = taskName,
params = {'nameHash' : nameHash})

and.. in the first part of the /myTaskQueue code.. you could have it verify
that the 'nameHash' param is equal to getHash() of the TaskName you grab
from the header..

On Sat, Jan 30, 2010 at 4:07 PM, Patrick Linskey plins...@gmail.comwrote:

Hi,

Is there any supported means to do such a check?

Also, in an ideal world, it'd be nice if request.isUserInRole(admin)
would return true at the appropriate times.

Thanks,

-Patrick

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

Office: 619.862.2890 x100
Cell: 619.453.5075
Twitter: @svm_invictvs
IRC: svm_invic...@irc.freenode.net ##java, #android-dev, #iphonedev,
#appengine

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[google-appengine] Re: security in task queue servlets

From what I can tell, it doesn't seem to do anything with the user
principal in the case where an unauthenticated servlet fires off a
task queue request.

The task queue docs indicate that requests from the task queue will be
executed with admin rights, but I can't seem to find any way to ensure
that this is the case from code.

Thanks,

-Patrick

On Feb 1, 12:22 pm, Patrick Twohig patr...@namazustudios.com wrote:
 I believe that the App Engine injects the pertinent information from the
 Users service.  For instance, when you call
 HttpServletRequest.getUserPrinicpal(), you're getting values injected by the
 UsersService.





 On Mon, Feb 1, 2010 at 11:02 AM, Eli Jones eli.jo...@gmail.com wrote:
  If you have a compelling reason for really locking down the task queue url
  (and Require Admin login isn't enough), you could create a mechanism that
  creates a task name for each queued task.. and the task verifies that its
  name is correct.

  You could have the task use the X-AppEngine-TaskName header to check its
  name..

  So.. when you add a task to the queue.. you do something like this:

  taskName = getUniqueTaskName()
  nameHash = getHash(taskName)

  taskqueue.add(url    = '/myTaskQueue', countdown = 0,
                name   = taskName,
                params = {'nameHash' : nameHash})

  and.. in the first part of the /myTaskQueue code.. you could have it verify
  that the 'nameHash' param is equal to getHash() of the TaskName you grab
  from the header..

  On Sat, Jan 30, 2010 at 4:07 PM, Patrick Linskey plins...@gmail.comwrote:

  Hi,

  I'd like to programmatically ensure that my task queue servlets are
  only invoked via the task queue. I've got a security constraint in my
  web.xml, but I'd like to also check in code to avoid any potential mis-
  configuration in the future.

  Is there any supported means to do such a check?

  I tried looking at the contents of the HttpServletRequest (isUserInRole
  (), getAuthType(), getUserPrincipal(), getRemoteName()), to no avail.
  I also tried UserServiceFactory.getUserService().isAdmin(), but
  received an exception informing me that no user was logged in.

  I can see that there are a number of task queue-specific HTTP headers.
  Currently, I'm checking that X-AppEngine-TaskRetryCount is present,
  and if so, assuming that the request has come from the task queue and
  that it's therefore safe to process. Empirically, it looks like GAE
  strips out the X-AppEngine-TaskRetryCount header when I specify it in
  a curl-sourced request. Is this a safe assumption to rely on? Are
  there plans to document a reliable way to ensure servlet security in a
  task queue environment? Is there something else that I'm missing?

  Also, in an ideal world, it'd be nice if request.isUserInRole(admin)
  would return true at the appropriate times.

  Thanks,

  -Patrick

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[google-appengine] Re: security in task queue servlets

 (and Require Admin login isn't enough)

That would be enough, but the only way to do that is to put the
limitation in the web.xml file, which is pretty far away from the
servlet in question. I want to make sure that someone doesn't
accidentally mis-configure the web.xml file to remove the admin
restriction. And I'd really rather not parse web.xml and apply all the
appropriate rules to do so.

Also, I don't know whether or not Google guarantees that the X-
AppEngine-TaskName header is stripped from malicious incoming
requests. It looks like it does, but that's just based on my
observations.

Thanks,

-Patrick

On Feb 1, 11:02 am, Eli Jones eli.jo...@gmail.com wrote:
 If you have a compelling reason for really locking down the task queue url
 (and Require Admin login isn't enough), you could create a mechanism that
 creates a task name for each queued task.. and the task verifies that its
 name is correct.

 You could have the task use the X-AppEngine-TaskName header to check its
 name..

 So.. when you add a task to the queue.. you do something like this:

 taskName = getUniqueTaskName()
 nameHash = getHash(taskName)

 taskqueue.add(url    = '/myTaskQueue', countdown = 0,
               name   = taskName,
               params = {'nameHash' : nameHash})

 and.. in the first part of the /myTaskQueue code.. you could have it verify
 that the 'nameHash' param is equal to getHash() of the TaskName you grab
 from the header..



 On Sat, Jan 30, 2010 at 4:07 PM, Patrick Linskey plins...@gmail.com wrote:
  Hi,

  I'd like to programmatically ensure that my task queue servlets are
  only invoked via the task queue. I've got a security constraint in my
  web.xml, but I'd like to also check in code to avoid any potential mis-
  configuration in the future.

  Is there any supported means to do such a check?

  I tried looking at the contents of the HttpServletRequest (isUserInRole
  (), getAuthType(), getUserPrincipal(), getRemoteName()), to no avail.
  I also tried UserServiceFactory.getUserService().isAdmin(), but
  received an exception informing me that no user was logged in.

  I can see that there are a number of task queue-specific HTTP headers.
  Currently, I'm checking that X-AppEngine-TaskRetryCount is present,
  and if so, assuming that the request has come from the task queue and
  that it's therefore safe to process. Empirically, it looks like GAE
  strips out the X-AppEngine-TaskRetryCount header when I specify it in
  a curl-sourced request. Is this a safe assumption to rely on? Are
  there plans to document a reliable way to ensure servlet security in a
  task queue environment? Is there something else that I'm missing?

  Also, in an ideal world, it'd be nice if request.isUserInRole(admin)
  would return true at the appropriate times.

  Thanks,

  -Patrick

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[google-appengine] Re: security in task queue servlets

I am using web.xml, but I'm unsatisfied with the potential for a
future mis-configuration to open up a hole to these servlets.

I'm reluctant to rely on an obscure rule tucked away in a shared
separately-modifiable deployment descriptor to always be properly
configured.

 HttpHeaders are very easy to create and send with a http request.

Agreed, but it's also very easy for the appserver to filter out
certain headers (which it looks like Google is doing). If they're
doing this intentionally, then the existence of a header can provide a
meaningful security validation.

-Patrick

On Feb 1, 10:43 am, fhtino fht...@gmail.com wrote:
 IMHO you're on a wrong way.  Use web.xml contrains and no other
 things.
 HttpHeaders are very easy to create and send with a http request.

    fabrizio

 On Jan 30, 10:07 pm, Patrick Linskey plins...@gmail.com wrote:



  ...
  a curl-sourced request. Is this a safe assumption to rely on? Are
  there plans to document a reliable way to ensure servlet security in a
  task queue environment? Is there something else that I'm missing?

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Re: [google-appengine] Re: security in task queue servlets

2010-02-01 Thread Eli Jones

That's why you have to use the TaskName and Hash method to verify that a
Task was added to the queue in an orthodox manner.

Unless someone knows the hash scheme you are using for TaskNames.. they will
not be able to send in a (TaskName,getHash(TaskName)) pair that would get
validated when the task started running..

Let me know if I'm not being clear in my suggestion.. this should do exactly
what you want.. it would 100% prevent a person from accidentally visiting
the URL and running a task (since it checks for the TaskName header).. and
it would pretty much prevent some random person from trying to impersonate a
task by sending a Post to the task URL.. They would have to know the
correct hash to send along with the TaskName they are spoofing..

On Mon, Feb 1, 2010 at 3:29 PM, Patrick Linskey plins...@gmail.com wrote:

(and Require Admin login isn't enough)

That would be enough, but the only way to do that is to put the
limitation in the web.xml file, which is pretty far away from the
servlet in question. I want to make sure that someone doesn't
accidentally mis-configure the web.xml file to remove the admin
restriction. And I'd really rather not parse web.xml and apply all the
appropriate rules to do so.

Also, I don't know whether or not Google guarantees that the X-
AppEngine-TaskName header is stripped from malicious incoming
requests. It looks like it does, but that's just based on my
observations.

Thanks,

-Patrick

On Feb 1, 11:02 am, Eli Jones eli.jo...@gmail.com wrote:
If you have a compelling reason for really locking down the task queue
url
(and Require Admin login isn't enough), you could create a mechanism that
creates a task name for each queued task.. and the task verifies that its
name is correct.

You could have the task use the X-AppEngine-TaskName header to check its
name..

So.. when you add a task to the queue.. you do something like this:

taskName = getUniqueTaskName()
nameHash = getHash(taskName)

taskqueue.add(url= '/myTaskQueue', countdown = 0,
name = taskName,
params = {'nameHash' : nameHash})

and.. in the first part of the /myTaskQueue code.. you could have it
verify
that the 'nameHash' param is equal to getHash() of the TaskName you grab
from the header..

On Sat, Jan 30, 2010 at 4:07 PM, Patrick Linskey plins...@gmail.com
wrote:
Hi,

Is there any supported means to do such a check?

Also, in an ideal world, it'd be nice if request.isUserInRole(admin)
would return true at the appropriate times.

Thanks,

-Patrick

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[google-appengine] What does Support for mapping operations across datasets mean?

2010-02-01 Thread DutrowLLC

What does Support for mapping operations across datasets mean?

(Taken from the Features on Deck section of the current Roadmap:
http://code.google.com/appengine/docs/roadmap.html)

Thanks!
Chris

PS: I did a fairly extensive search to figure this out on my own, but
came up with very little.  Then I asked a respected colleague who was
also unsure.  I know this is probably painfully obvious to some
people, so I apologize.

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Re: [google-appengine] What does Support for mapping operations across datasets mean?

2010-02-01 Thread Ross M Karchner

I'm *pretty* sure it's a reference to MapReduce?
http://en.wikipedia.org/wiki/MapReduce



On Mon, Feb 1, 2010 at 4:28 PM, DutrowLLC dutrow...@gmail.com wrote:

 What does Support for mapping operations across datasets mean?

 (Taken from the Features on Deck section of the current Roadmap:
 http://code.google.com/appengine/docs/roadmap.html)

 Thanks!
 Chris

 PS: I did a fairly extensive search to figure this out on my own, but
 came up with very little.  Then I asked a respected colleague who was
 also unsure.  I know this is probably painfully obvious to some
 people, so I apologize.

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[google-appengine] Character encoding Problem

2010-02-01 Thread Jos Muysers

Hi,

When I deploy my application I see this character: � instead of this
one: ü.
When I run the app. in development mode the characters are ok.

My application gets an xml file from a webservice on our company
server. The header of the xml file is:
?xml version=1.0 encoding=utf-8 ?
when I open this xml file in a browser, the characters are displayed
as they should be.
In eclipse, i set all the java-files to text-file encoding utf-8
(properties  text file encoding)
In the Project-properties, i set the encoding to utf-8 also.
In the head of my Html page I have this line: meta http-
equiv=content-type content=text/html; charset=UTF-8

What could be wrong  ? ?

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[google-appengine] Receive email from googlemail account

2010-02-01 Thread sjtirtha

Hi,

Is it possible to receive email from googlemail account?

Regards,
Steve

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[google-appengine] Store email in appengine

2010-02-01 Thread sjtirtha

Hi,

appengine allows per documentation only passing email as http and the
received email has to be handled by a servlet. What is the best
approach to persist the received email in appengine?

Regards,
STeve

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Re: [google-appengine] Re: why my datastore nearly be full?

2010-02-01 Thread Robert Kluin

We see about 10x overhead, I assume from indexes, in our apps.  One
app is using 30M for storing entities and metadata, the indexes take
another 300M.  We see similar usage multipliers in all of our apps.

Robert






2010/2/1 Hugo Visser botte...@gmail.com:
 I'm seeing the same thing. I got hardly anything stored in the
 datastore, but my quota is at 50% right now. I did have some stuff in
 the memcache however.
 This morning I flushed memcache and deleted all entities in the
 datastore but the quota usage is still going up. I'm waiting to see
 what happens after the daily reset.

 Hugo

 On Feb 1, 5:27 pm, Wooble geoffsp...@gmail.com wrote:
 The stored data quota in the dashboard isn't updated in realtime, so
 you wouldn't see the change immediately even if that is the problem.
 I'd suspect some buggy indexes or something, though, if that really
 was your only entity.  For one thing, you can't have a single entity
 larger than 1MB, and it would be tough to use 949 MB in datastore
 overhead even if you wanted to.

 On Jan 31, 3:05 am, saintthor saintt...@gmail.com wrote:

  i deleted the only entity of ltWords. the Total Stored Data is still
  95%!

  who can help me?

  On 1月30日, 下午8时42分, Sylvain sylvain.viv...@gmail.com wrote:

   maybe this bug ?

  http://code.google.com/p/googleappengine/issues/detail?id=631

   On Jan 30, 9:27 am, saintthor saintt...@gmail.com wrote:

in quota details, i notic my Total Stored Data is 95%. it shouldn' t
be so large.

in Datastore Statistics, Size of all entities is only 9MB.

all that happened from about 4% to 95% is i updated an entity for
about 200 times. the class is:

class ltWords( db.Model ):
WordsDText = db.TextProperty()

after this, there is only one entity of ltWords and the WordsDText is
no longer than 1MB. why does it take more than 90% of my datastore
quota and how to release it?

for  saintthor.appspot.com

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[google-appengine] Re: Best practice for caching frequent datastore reads

2010-02-01 Thread k3xji


 Second, please be aware that caching object may not be the most
 efficient way. In many cases, caching the final output (typically HTML
 file or JSON file) in memcache gives you the best performance. I am
 using this technique in all my projects, and it is working very
 well.

That was a very helpful point indeed.

Thanks.

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[google-appengine] Re: why my datastore nearly be full?

Hi to all ,
I'm experiencing the same problem. I've described it also in :
http://groups.google.com/group/google-appengine-java/browse_thread/thread/27d03163d170e6ec/9ad021dee7e82359
Currently my status is :
from the dash board : Total Stored Data : 38% (and definitely
counting..)
Datastore statistics : Size of all entities 414 KBytes
from which the main is _ah_SESSION - 86%
I don't have any indexes defined. the number of sessions which my
application currently keeps are round 40 per hour.

Any help regarding this would be appreciated.
If anybody from Google guys is interested - my app-id is sandcode

Best Regards:
Dimitar Makariev

On Feb 1, 11:51 am, Robert Kluin robert.kl...@gmail.com wrote:
We see about 10x overhead, I assume from indexes, in our apps. One
app is using 30M for storing entities and metadata, the indexes take
another 300M. We see similar usage multipliers in all of our apps.

Robert

2010/2/1 Hugo Visser botte...@gmail.com:

I'm seeing the same thing. I got hardly anything stored in the
datastore, but my quota is at 50% right now. I did have some stuff in
the memcache however.
This morning I flushed memcache and deleted all entities in the
datastore but the quota usage is still going up. I'm waiting to see
what happens after the daily reset.

Hugo

On Feb 1, 5:27 pm, Wooble geoffsp...@gmail.com wrote:
The stored data quota in the dashboard isn't updated in realtime, so
you wouldn't see the change immediately even if that is the problem.
I'd suspect some buggy indexes or something, though, if that really
was your only entity. For one thing, you can't have a single entity
larger than 1MB, and it would be tough to use 949 MB in datastore
overhead even if you wanted to.

On Jan 31, 3:05 am, saintthor saintt...@gmail.com wrote:

i deleted the only entity of ltWords. the Total Stored Data is still
95%!

who can help me?

On 1月30日, 下午8时42分, Sylvain sylvain.viv...@gmail.com wrote:

maybe this bug ?

http://code.google.com/p/googleappengine/issues/detail?id=631

On Jan 30, 9:27 am, saintthor saintt...@gmail.com wrote:

in quota details, i notic my Total Stored Data is 95%. it shouldn' t
be so large.

in Datastore Statistics, Size of all entities is only 9MB.

all that happened from about 4% to 95% is i updated an entity for
about 200 times. the class is:

class ltWords( db.Model ):
WordsDText = db.TextProperty()

after this, there is only one entity of ltWords and the WordsDText is
no longer than 1MB. why does it take more than 90% of my datastore
quota and how to release it?

for saintthor.appspot.com

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[google-appengine] Re: Is GAE the right choice for e-commerce?

2010-02-01 Thread ng

Hi Mike,

Thanks for your reply. It is really helpful and encouraging to know
that there are successful e-Commerce models already running good on
GAE. Your online shop looks GREAT! Clean and intuitive design with
simple cart + payment structure. And yes, it is pretty much the same
that I want to do for my service - to write a custom (yet simple)
shopping cart and be able to control and change anything quick and
easy (as I understand it)... and due do appEngine development
simplicity phenomenon I actually enjoy doing it right now, but, as I
mentioned above, my main concern is all about the simplicity of
adding, controlling, 'rewiring' and, the last but not least, securing
clients online payments. I'm pretty sure it is relatively easy for an
experienced web programmer (especially Google programmer;) to set it
up nicely from the scratch but not that transparent for a beginner
(like myself) to make that part running properly without fiddling with
different approaches, trials and fails... and true, I wish there were
a couple of reliable open-source e-commerce solutions already to
investigate and rely on. Also I guess there could be a decent
guideline for embedding  Google Checkout service... at least it seems
natural as it is Google's proprietary online paying system.

Thanks,
NG


On Feb 2, 2:19 am, Mike mickn...@gmail.com wrote:
 Hi NG

 We are running our business on AppEngine. (Search Shoes of Prey on
 Google to find us.)

 So far, it is going really well. AppEngine is a delight to develop on,
 and you can't argue with the cost. (I've only been charged $0.01 so
 far. Although, as I've posted in another thread, the small charge by
 itself was problematic for me.) :)

 I had to write the entire ecommerce platform from scratch - which
 suited me given the very custom nature of our business - however you
 may not be as keen as me. It really depends on your business.

 We choose AppEngine primarily because a) 2 of us used to work at
 Google, and we love AppEngine b) if we start serving a lot of traffic/
 bandwidth we want something scalable. As I said earlier as well, the
 API is really nice and makes developing a breeze.

 The only thing I wish AppEngine had was HTTPS support for custom
 domains, and I'm hopeful that one day it will be supported. There are
 workarounds too. Once AppEngine has HTTPS support and a few open-
 source ecommerce software packages, it will be a really great platform
 I would think.

 Good luck.

 Mike

 On Jan 31, 4:31 pm, decuman ngn...@gmail.com wrote:

  Hello,

  At the moment I'm thinking of building a small/medium online selling
  business and before investing more of my time (and money) into GAE
  based development it would be just great to know some experienced
  users and expert thoughts and opinions on it.

  As far as I can see (after reading related books, articles and message
  group threads) GAE is just a perfect solution for prototyping and
  building a social networking applications (Blogs, Chats, Galleries,
  Message boards etc.) which requires tracking a lot of users and
  storing data... which is great. But there is quite a few (literally
  none) of nice business/e-commerce applications with decent product
  galleries, shopping carts and checkout functionality and payment
  service integration. Also there are lots of complains and negative
  responses pointing to big GAE functional limitations (which are not
  going to improve soon or ever) and overall practicability of using it
  as a reliable e-commerce platform. In particular (PayPal, Google
  Checkout integration)

  It wasn't a very deep and thoughtful investigation but the outlined
  above is just my personal subjective feeling so far. I would really
  love to know the opinion and thoughts on this matter from GAE experts.
  Shell I move forward with Google App Engine development or it would be
  move wise to consider some other solution?

  Thanks in advance!
  NG

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[google-appengine] Re: why my datastore nearly be full?

Hi to all ,
I have more or less the same problem.
I've described it also here :
http://groups.google.com/group/google-appengine-java/browse_thread/thread/27d03163d170e6ec/9ad021dee7e82359
my current status is :
Total Stored Data : 37%
While at the same time the Display statistics is : Size of all
entities 414 KBytes
with 86% used by _ah_SESSION , which is ok
I don't have any indexes defined.

if the guys from Google want to take a look my app-id is sandcode

Best Regards:
Dimitar Makariev

Robert

2010/2/1 Hugo Visser botte...@gmail.com:

Hugo

On Jan 31, 3:05 am, saintthor saintt...@gmail.com wrote:

i deleted the only entity of ltWords. the Total Stored Data is still
95%!

who can help me?

On 1月30日, 下午8时42分, Sylvain sylvain.viv...@gmail.com wrote:

maybe this bug ?

http://code.google.com/p/googleappengine/issues/detail?id=631

On Jan 30, 9:27 am, saintthor saintt...@gmail.com wrote:

in quota details, i notic my Total Stored Data is 95%. it shouldn' t
be so large.

in Datastore Statistics, Size of all entities is only 9MB.

all that happened from about 4% to 95% is i updated an entity for
about 200 times. the class is:

class ltWords( db.Model ):
WordsDText = db.TextProperty()

after this, there is only one entity of ltWords and the WordsDText is
no longer than 1MB. why does it take more than 90% of my datastore
quota and how to release it?

for saintthor.appspot.com

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[google-appengine] Re: Interactive console -- users.get_current_user() always returns None

2010-02-01 Thread BrianDFS


Yes, I'm using https://appengine.google.com/a/darkflowstudios.com and
it still redirects me to the /start page to Create an Application.

I've added myself to the wait list using the form located at:
https://appengine.google.com/waitlist/sms_issues

Hoping for a response sometime this week as I have an app waiting to
go.  Thanks.

BTW, I also sorted out my login issues.  Was a browser cache issue.

On Feb 1, 9:39 am, Wooble geoffsp...@gmail.com wrote:
 You'll need to use the dashboard at appengine.google.com/a/
 darkflowstudios.com if you registered with your Google Apps account.

 On Jan 29, 6:09 pm, BrianDFS br...@darkflowstudios.com wrote:



  Hmmm, there are no cookies listed for localhost:8080.  Maybe I'm
  misunderstanding how to log in locally then.

  Another thing I've noticed is that when I log into App Engine via the
  Google Apps portal athttps://appengine.google.com/a/YOURDOMAIN.COM,
  it takes me to the /start page where it prompts me to create my first
  application which then prompts me to verify my account via sms.
  However, I'm pretty sure I've already verified my account via sms.  If
  I try to enter my phone number anyway, it fails with: The phone
  number has been sent too many messages or has already been used to
  confirm an account.

  On Jan 29, 3:18 pm, Nick Johnson (Google) nick.john...@google.com
  wrote:

    On Fri, Jan 29, 2010 at 10:15 PM, BrianDFS 
   br...@darkflowstudios.comwrote:

Hi Nick,

I'm talking about the interactive development console located at:
   http://localhost:8080/_ah/admin/interactive

No matter what I do or which google account I'm logged into, it never
thinks I'm logged in.

   The local admin console only pays attention to what you logged into on
   localhost, using the local users stub. You can't log into Google accounts
   with it.

   If that's what you're meaning, can you check your browser's cookies for
   cookies set on localhost:8080, and report what you see there?

   -Nick Johnson

On Jan 29, 12:17 pm, Nick Johnson (Google) nick.john...@google.com
wrote:
 Hi Brian,

 Which interactive console are you referring to?

 -Nick

 On Fri, Jan 29, 2010 at 3:01 PM, BrianDFS br...@darkflowstudios.com
wrote:
  I'm completely new to GAE as of about 3 days ago.  I'm working on an
  app based off some pre-existing source code.  Everything seemed to 
  be
  moving along nicely until yesterday when suddenly it seemed as 
  though
  I was no longer logged in in my test app.  To confirm this I tried 
  the
  hello world or hello user default program at the interactive
  console and sure enough, users.get_current_user() always returns 
  None
  now.  I'm tried clearing my browser (Chrome) cache and history, I've
  also tried other browsers, I'm at a loss.

  I'm using GAE with my Google Apps account.

  Any tips, suggestions, or help would be greatly appreciated.  
  Thanks.

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Number:
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Re: [google-appengine] Charged $0.01... consequently my credit card was blocked

Mike,

Yikes, really sorry about that. You're right, it doesn't make any sense to
charge 0.01 (On a positive note, I saw your site linked in another groups
post and it's pretty awesome: http://www.shoesofprey.com). I've raised the
issue so that we can talk about ways we can reduce the chances that this
sort of thing can happen in the future.

Can you fill out the billing issues form?
http://code.google.com/support/bin/request.py?contact_type=AppEngineBillingSupport
Maybe
there is something we can do for you. At the very least it'll create a
trackable issue for us.

On Sat, Jan 30, 2010 at 12:27 PM, Mike mickn...@gmail.com wrote:

Hi there

Just got off the phone with my bank after spending 10 minutes
reactivating my credit card after my first AppEngine credit card
charge for $0.01 USD. Banks tend to view these charges as potentially
fraudulent.

I understand the need to charge for AppEngine, but charging $0.01 a
week hardly seems worthwhile.

Perhaps the system could aggregate charges to a reasonable amount -
say $5, and then charge the card?

Alternatively, allow me to prepay a certain amount, so then I can
forget about it for a few months.

The other issue is that my credit card is in Australia Dollars. I'm
probably going to get some sort of foreign currency conversion fee now
every time $0.01 is charged. That will probably be many many multiples
of the actual charge.

Cheers
Mike

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

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[google-appengine] What are my options for generating PDFs dynamically?

2010-02-01 Thread Daniel C

I need to be able to generate PDFs dynamically. I also need to be able
to parse PDF files to extract certain information. Are there any
Python/Java libraries that work within the sandboxing and whitelisting
restrictions?

Thanks,
Daniel

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[google-appengine] How to store very large files (e.g. PDFs)

2010-02-01 Thread Daniel C

I need to allow users to upload very large/complex PDFs containing
many images. The PDFs are typically 300MB each. Will this be possible
with GAE?

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[google-appengine] Re: What are my options for generating PDFs dynamically?

2010-02-01 Thread Greg

On Feb 2, 1:57 pm, Daniel C daniel.c...@gmail.com wrote:
 I need to be able to generate PDFs dynamically. I also need to be able
 to parse PDF files to extract certain information. Are there any
 Python/Java libraries that work within the sandboxing and whitelisting
 restrictions?

I use reportlab to generate PDFs on Appengine. I don't parse PDFs, but
their reportlab plus product may help you there.

http://www.reportlab.com/software/opensource/

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[google-appengine] Re: Android app to monitor appengine quotas

2010-02-01 Thread Andrei

can u find way to get orders for paid Android apps from goog checkout?

On Feb 1, 11:05 am, Hugo Visser botte...@gmail.com wrote:
 Hi,

 I've released a little android app to monitor your app engine quotas.
 It's called Engine Watch and is available from the android market. See
 my blog athttp://code.neenbedankt.comfor more details. I hope it's
 useful to some of you too :)

 Hugo

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[google-appengine] my links are invalid on Digg

2010-02-01 Thread james_027

Hi all,

Sorry if this post doesn't seems to be appropriate, but I can't submit
links to digg, with this error message by digg This link does not
appear to be a working link. Please check the URL and try again. A
sample link from my GAE site is this

http://jamesgae.appspot.com/blog/2010/01/28/blogs-on-the-cloud-creating-your-own-customize-blog

Any ideas?

Thanks

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[google-appengine] How to deal with the _ToDatastoreError(err) problem?

2010-02-01 Thread lookon

I meet this problem regularly. Anyone has an idea about this problem?
Thanks.

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[google-appengine] Re: Character encoding Problem

2010-02-01 Thread JoshG

You've probably already done this, but did you try going to Window 
Preferences  General  Workspace in eclipse and setting the Text File
Encoding to UTF-8?



On Feb 1, 4:12 pm, Jos Muysers josmuys...@gmail.com wrote:
 Hi,

 When I deploy my application I see this character: instead of this
 one: ü.
 When I run the app. in development mode the characters are ok.

 My application gets an xml file from a webservice on our company
 server. The header of the xml file is:
 ?xml version=1.0 encoding=utf-8 ?
 when I open this xml file in a browser, the characters are displayed
 as they should be.
 In eclipse, i set all the java-files to text-file encoding utf-8
 (properties  text file encoding)
 In the Project-properties, i set the encoding to utf-8 also.
 In the head of my Html page I have this line: meta http-
 equiv=content-type content=text/html; charset=UTF-8

 What could be wrong  ? ?

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[google-appengine] Re: How to store very large files (e.g. PDFs)

2010-02-01 Thread JoshG

If I understand correctly, there is currently a 50 MB file storage
amount using the Blobstore API. More info can be found here:

http://googleappengine.blogspot.com/2009/12/app-engine-sdk-130-released-including.html

and here:

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



On Feb 1, 6:52 pm, Daniel C daniel.c...@gmail.com wrote:
 I need to allow users to upload very large/complex PDFs containing
 many images. The PDFs are typically 300MB each. Will this be possible
 with GAE?

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[google-appengine] Re: security in task queue servlets