Re: [google-appengine] where to put credentials?

[Alejandro González Rodrigo]

I use resource files to store credentials and on app start i copy them in
to a global config entity en the datastore. I cache it for fast access
aswell.

Cheers
El 15/11/2013 11:19, "stephanos"  escribió:

> Hi there,
>
> my project currently stores API keys and other credentials in the source
> code. That's far from ideal.
> In Heroku you can set global environment variables which are a great place
> to store those sensitive information.
>
> So - where do you put your credentials?
>
> Cheers
> Stephan
>
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Re: [google-appengine] How to get the path of a file saved in blobstore ?

[Alejandro González Rodrigo]

Hello Anuja,

No, that is not possible because the actual file is not in the filesystem.
But with the byte[] you can easily get a InputStream checkout:
http://stackoverflow.com/questions/1802123/can-we-convert-a-byte-array-into-an-inputstream-in-java

InputStream myInputStream = new ByteArrayInputStream(file);
POIFSFileSystem myFileSystem = new POIFSFileSystem(myInputStream);



2013/11/14 anuja bothra 

> I actually wanted to parse the file in POI since I already had written
> code for that in a local app.
>
> FileInputStream myInput = new FileInputStream(filePath);
> POIFSFileSystem myFileSystem = new POIFSFileSystem(myInput);
>
> I need the "filePath" (the excel file's path) so that I can just pass that
> and reuse the code that I had already written.
> Is that not possible ?
>
> Thanks
>
>
> On Thu, Nov 14, 2013 at 3:24 PM, Alejandro González Rodrigo <
> alejandro.gonza...@intelygenz.com> wrote:
>
>> Hello Anuja,
>>
>> When you upload a file to the blobstore, in the /_ah/upload callback you
>> can grab the BlobKey that was uploaded:
>>
>> BlobstoreService blobstoreService =
>> BlobstoreServiceFactory.getBlobstoreService();
>> Map> blobs = blobstoreService.getUploads(request);
>> BlobKey *blobKey* = blobs.get("file").get(0);
>>
>> You need that blobkey to access the file again. If you want to accecss
>> the file later, you might want to store it somewhere in the datastore.
>>
>> With the BlobKey you can retrieve a byte[] of the file to do whatever you
>> want:
>>
>> byte[] file = blobstoreService.fetchData(*blobKey*, 0,
>> BlobstoreService.MAX_BLOB_FETCH_SIZE-1);
>>
>>
>> Hopes that helps.
>> Good luck!
>>
>>
>>
>>
>>
>>
>> 2013/11/14 anuja bothra 
>>
>>> Hi,
>>>
>>> I have data in an excel sheet.
>>> I need to read that data and save it to the datastore.
>>>
>>> I am able to upload the excel to blobstore.
>>> How do I get the excel file path to pass to POI (so that I can read the
>>> cell contents) ?
>>> My code is in Java
>>>
>>> Thanks,
>>> Anuja
>>>
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>>
>>
>>
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>> <http://es.linkedin.com/pub/alejandro-gonzález-rodrigo/19/684/466/>
>>
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>>
>>
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Re: [google-appengine] How to get the path of a file saved in blobstore ?

[Alejandro González Rodrigo]

Hello Anuja,

When you upload a file to the blobstore, in the /_ah/upload callback you
can grab the BlobKey that was uploaded:

BlobstoreService blobstoreService =
BlobstoreServiceFactory.getBlobstoreService();
Map> blobs = blobstoreService.getUploads(request);
BlobKey *blobKey* = blobs.get("file").get(0);

You need that blobkey to access the file again. If you want to accecss the
file later, you might want to store it somewhere in the datastore.

With the BlobKey you can retrieve a byte[] of the file to do whatever you
want:

byte[] file = blobstoreService.fetchData(*blobKey*, 0,
BlobstoreService.MAX_BLOB_FETCH_SIZE-1);


Hopes that helps.
Good luck!






2013/11/14 anuja bothra 

> Hi,
>
> I have data in an excel sheet.
> I need to read that data and save it to the datastore.
>
> I am able to upload the excel to blobstore.
> How do I get the excel file path to pass to POI (so that I can read the
> cell contents) ?
> My code is in Java
>
> Thanks,
> Anuja
>
> --
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Re: [google-appengine] add-on Google Cloud Storage to an existing GAE project

[Alejandro González Rodrigo]

Hello again,

For clarification on you last statment: *The goal is to store data from
that project in GCS.*

You can create a new entire project in GCS that has nothing related to your
ABC project, and give that project permissions to your GCS buckets thorugh
the GCS ACLs. The only thing you need is to gather the Service Account Name
from you ABC's AppEngine console under "Application Settings". Its looks
like abc-proj...@appspot.gserviceaccount.com. Take that email and give it
permissions in the GCS bucket you want to store your files.

Good luck!




2013/11/13 Alejandro González Rodrigo 

> Hello Ken,
>
> I think the problem was in the step 1. If you click "Create Project"
> button you are creating a new project, not related to ABC project. You need
> to click on the ABC project link in the cloud console, and inside ABC
> project, activate billing, services for cloud storage and so on. Once you
> have activated the billing and services, in the left menu a new link to the
> Cloud Storage (or BigQuery) appears, and is related to the project ABC.
>
> Good luck!
>
>
>
> 2013/11/12 
>
> Hi,
>> I'm attempting to add-on Google Cloud Storage to an existing GAE project,
>> but am confused about whether I've succeeded.
>>
>> 1. I visited  https://cloud.google.com/console#/project , clicked the
>> checkbox for one of my projects (ABC), clicked the Create Project button,
>> validated my phone# via TextMessage, and validated my email address by
>> clicking the return link in the validating email, and got the resulting
>> confirmation.
>>
>> 2. I turned on billing.
>>
>> 3. So at this point I have a project
>>
>> https://cloud.google.com/console#/project/apps~xxx-yyy-nnn
>>
>> Under Permissions, I can add the other users from the original GAE
>> project.
>> Under APIs, these are ON: BigQuery, Google Cloud, Google Cloud Storage,
>> Google Cloud Storage JSON API.
>> I've also been able to run the LocalExample in Eclipse within our
>> original project ABC.
>>
>> But nowhere in the Google Cloud Console do I see any mention of the
>> original project ABC which I checked at the beginning of the setup
>> process.  The goal is to store data from that project in GCS.
>>
>> What am I missing?
>> Thanks in advance,
>> Ken Bowen
>>
>> --
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>
>
>
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> +34 666 57 79 13
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>
> <http://www.intelygenz.com/>
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> the *code <http://www.thegameofcode.com/>
>
>
>
>
>


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Re: [google-appengine] add-on Google Cloud Storage to an existing GAE project

[Alejandro González Rodrigo]

Hello Ken,

I think the problem was in the step 1. If you click "Create Project" button
you are creating a new project, not related to ABC project. You need to
click on the ABC project link in the cloud console, and inside ABC project,
activate billing, services for cloud storage and so on. Once you have
activated the billing and services, in the left menu a new link to the
Cloud Storage (or BigQuery) appears, and is related to the project ABC.

Good luck!



2013/11/12 

> Hi,
> I'm attempting to add-on Google Cloud Storage to an existing GAE project,
> but am confused about whether I've succeeded.
>
> 1. I visited  https://cloud.google.com/console#/project , clicked the
> checkbox for one of my projects (ABC), clicked the Create Project button,
> validated my phone# via TextMessage, and validated my email address by
> clicking the return link in the validating email, and got the resulting
> confirmation.
>
> 2. I turned on billing.
>
> 3. So at this point I have a project
>
> https://cloud.google.com/console#/project/apps~xxx-yyy-nnn
>
> Under Permissions, I can add the other users from the original GAE project.
> Under APIs, these are ON: BigQuery, Google Cloud, Google Cloud Storage,
> Google Cloud Storage JSON API.
> I've also been able to run the LocalExample in Eclipse within our original
> project ABC.
>
> But nowhere in the Google Cloud Console do I see any mention of the
> original project ABC which I checked at the beginning of the setup
> process.  The goal is to store data from that project in GCS.
>
> What am I missing?
> Thanks in advance,
> Ken Bowen
>
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Re: [google-appengine] Free Apps Account?

[Alejandro González Rodrigo]

Hello Joshua

Google Apps is no longer free from Dec 12 of 2012, you can read it here:
https://support.google.com/a/answer/2855120?hl=en

Good luck!


2013/11/5 Joshua Smith 

> I tried to follow the instructions I found for signing up for a free
> google apps account so that I could associate a new domain with a new app I
> created.
>
> I never saw any link to create a the account for free, though.
>
> I don't need a full apps account, I just want to set up the domain.
>
> What's the process to get this google apps account freebee-fied before my
> 30 day trial runs out?
>
> -Jooshua
>
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Re: [google-appengine] How to prevent overwriting an entity simultaneously?

[Alejandro González Rodrigo]

In few words: whats you need are transactions.

Transactions are there to solve your problem. stop making rutines and
subrutines to solve a problem that si already solved.

Using a framework usually mitigates the learning curve. I don't know if you
are already using a framework or library to handle datastore stuff or if
you are using Java, phyton or PHP but you have a lot of examples out there.

If you give us more info about technologies and librareis used maybe we can
give you some code or links to good tutorials to solve your problem or
learning about transactions.

Cheers.


El sábado, 19 de octubre de 2013, Kaan Soral escribió:

> I've implemented routines to handle contention at a large level, a custom
> pipeline implementation, there also also basic checks to prevent
> overwriting an entity.
>
> However there are some operations that require no overwrite to occur, for
> example:
>
>- Signup related updates, email, external_user_id etc
>- Email verification
>- User information updates
>
> When these get overwritten by another update simultaneously, it creates a
> really disturbing experience
>
> I've done a lot to prevent these, yet they do still happen rarely, and by
> rarely it seems >1%, a lot
>
> My plan is to dive into more custom routines to implement "make sure"
> routines / prevention routines
>
> I'm wondering whether there is something really basic I'm missing that
> achieves what I want to do
>
> For example I've never used transactions, without actually using it,
> learning from the use cases, the documentation of transactions were
> meaningless to me
>
> I would appreciate any advice
> (I'm also extremely unlucky, or lucky, tested my new app with ~10 users,
> all of them experienced unique problems, some issues that occurred probably
> have <1/1 probability of occurrence, a user triggered a second signup
> request, probably by page refresh, it would only cause an issue if the last
> part of the routine would execute around the same millisecond, and it did)
>
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Re: [google-appengine] Re: Over index creation quota

[Alejandro González Rodrigo]

>
> Generally speaking, If I'm not too mistaken, your approach to my scenario
> wouldn't reduce write operations, it would just reduce index number, but in
> return require manual indexing via additional models, kind of like moving
> around the limitation, not that I'm against it


We were talking about reducing indexes, but that usually comes with more
read or write operations. The reads operations can be reduced with memcache
or other caching mechanism.

What you can do is delete all the indexes you think you don't need and test
your application in a dev environmet. If there are any index needed that
you don't define, the app is gonna crash with a handy log message saying
which index is needed.

As a rule, i always expect that error development logs prior to add the
index to my appengine-index.xml Doing that i'm totally sure i don't have
unused indexes defined.

Cheers and good luck with your index crusade!




2013/10/19 Kaan Soral 

> In my scenario, there is a query with a sort order and there are optional
> filters, each optional filter doubles the index number
>
> Generally speaking, If I'm not too mistaken, your approach to my scenario
> wouldn't reduce write operations, it would just reduce index number, but in
> return require manual indexing via additional models, kind of like moving
> around the limitation, not that I'm against it
>
> An approach that keeps the simplicity but reduces the index number would
> be great
>
> I wonder what would happen if I only indexed each filter/property in a
> single index with the sort order and remove other combinations
> I'm not sure what would happen with a query that misses only one property
> from that index for example, does the system use that index, can error
> occur with huge datasets etc.
>
> I'm probably not going to exceed the 200, but I was thinking about
> refactoring a property from that index, which would cause a temporary
> increase in index numbers before vacuuming, which might cause issues
>
> Thinking about my case now, it might be a good idea to think about
> encoding the combinations and putting them inside a repeated property to be
> queried
> This wouldn't change the write operations, however would probably reduce
> indexes drastically
>
> Thanks for the advice and thanks for making me think :)
>
>
> On Saturday, October 19, 2013 1:24:32 PM UTC+3, Alejandro González Rodrigo
> wrote:
>
>> I dont know what kind of model do you have and what you can do with it,
>> but for example with this entity:
>> *
>>
>> Record*
>> @Id Long id
>> String user
>> Boolean newsletter; //<- indexed
>> Boolean notifications; //<- indexed
>> String choice; //A,B or C <- indexed
>>
>> How about splitting the entity this way?
>>
>> *RecordNewsletter*
>> @Id Long id
>> String user
>> Boolean choiceA;
>> Boolean choiceB;
>> Boolean choiceC;
>>
>> *RecordNotifications*
>> @Id Long id
>> String user
>> Boolean choiceA;
>> Boolean choiceB;
>> Boolean choiceC;
>>
>>
>> As the 200 limit index count is only for composite indexes, with this
>> model you have 0 indexes count. Yo have to do more queries to get your
>> info, but with a good cache mechanism maybe is worth the datastore calls.
>> This may not fit your model or your needs, but is a good example of how to
>> reduce indexes drastically.
>>
>> Cheers!
>>
>>
>>
>> 2013/10/19 Kaan Soral 
>>
>> The optimized/documented version of index.yaml is 138 indexes :)
>>>
>>> Generally the majority are from a single model with 2 boolean, one (3
>>> choiced) string property, generating 2^3x of the initial index number
>>>
>>> Since the filters are not always present, the devserver generates an
>>> index for each situation, I'm not sure if it can be reduced without
>>> NeedIndexError's
>>>
>>>
>>> On Saturday, October 19, 2013 12:51:51 PM UTC+3, Alejandro González
>>> Rodrigo wrote:
>>>
>>>> That 200 index limit quota can't be changed (at least to my knowledge).
>>>> That limit is there for important reasons. If you reach the limit, maybe
>>>> you are doing something wrong, or not in the best way.
>>>>
>>>> Did you consider using search API for removing some index? Bigquery or
>>>> CloudSQL for making reports outside the blobstore and maybe remove some
>>>> indexes? Are your data-model enough optimized for using the low number of
>>>> indexes possible, using denormalization and ancest

Re: [google-appengine] Re: Over index creation quota

[Alejandro González Rodrigo]

I dont know what kind of model do you have and what you can do with it, but
for example with this entity:
*

Record*
@Id Long id
String user
Boolean newsletter; //<- indexed
Boolean notifications; //<- indexed
String choice; //A,B or C <- indexed

How about splitting the entity this way?

*RecordNewsletter*
@Id Long id
String user
Boolean choiceA;
Boolean choiceB;
Boolean choiceC;

*RecordNotifications*
@Id Long id
String user
Boolean choiceA;
Boolean choiceB;
Boolean choiceC;


As the 200 limit index count is only for composite indexes, with this model
you have 0 indexes count. Yo have to do more queries to get your info, but
with a good cache mechanism maybe is worth the datastore calls. This may
not fit your model or your needs, but is a good example of how to reduce
indexes drastically.

Cheers!



2013/10/19 Kaan Soral 

> The optimized/documented version of index.yaml is 138 indexes :)
>
> Generally the majority are from a single model with 2 boolean, one (3
> choiced) string property, generating 2^3x of the initial index number
>
> Since the filters are not always present, the devserver generates an index
> for each situation, I'm not sure if it can be reduced without
> NeedIndexError's
>
>
> On Saturday, October 19, 2013 12:51:51 PM UTC+3, Alejandro González
> Rodrigo wrote:
>
>> That 200 index limit quota can't be changed (at least to my knowledge).
>> That limit is there for important reasons. If you reach the limit, maybe
>> you are doing something wrong, or not in the best way.
>>
>> Did you consider using search API for removing some index? Bigquery or
>> CloudSQL for making reports outside the blobstore and maybe remove some
>> indexes? Are your data-model enough optimized for using the low number of
>> indexes possible, using denormalization and ancestors queries to save
>> indexes? Maybe in your model fits the Namespace aproach for multitency
>> apps, saving again a lot of indexes?
>>
>> There are many tricks and considerations to take care of when modeling in
>> a non relational database like the blobstore.
>>
>> Cheers!
>>
>>
>> 2013/10/19 Kaan Soral 
>>
>> with 138 indexes, I'm wondering this too :)
>>>
>>>
>>> On Tuesday, September 3, 2013 6:50:42 AM UTC+3, aswath wrote:
>>>
>>>> Same here.  I need to increase the number of indexes.  Is this
>>>> limitation removed for billing enabled apps?
>>>>
>>>> -Aswath
>>>>
>>>>
>>>> On Tue, Sep 3, 2013 at 1:08 AM, kcunha.araujo wrote:
>>>>
>>>>> Hi all,
>>>>>
>>>>> Anybody know how to increase quota index number? My app is on limite
>>>>> 200. We need to increase it.
>>>>>
>>>>> Em quinta-feira, 12 de novembro de 2009 11h48min11s UTC-4, Orlando
>>>>> escreveu:
>>>>>>
>>>>>> I have same problem: Error 400: --- begin server output ---
>>>>>> Over index creation quota: The API call datastore_v3.CreateIndex()
>>>>>> required more quota than is available.
>>>>>>
>>>>>> The application is 'testingryv'. I have tried to delete my useless
>>>>>> indexes, but i got same problem. Any solution?
>>>>>>
>>>>>> Thanks,
>>>>>> Orlando
>>>>>>
>>>>>> On 14 oct, 21:35, Dinesh Varadharajan
>>>>>>  wrote:
>>>>>> > I can delete and recreate apps.Thanks for your time..
>>>>>> >
>>>>>> > Dinesh
>>>>>> > On Oct 14, 6:02 pm, "Nick Johnson (Google)" <
>>>>>> nick.john...@google.com>
>>>>>> > wrote:
>>>>>> >
>>>>>> >
>>>>>> >
>>>>>> > > On Wed, Oct 14, 2009 at 1:53 PM, Dinesh >>>>> orangescape.com
>>>>>> >
>>>>>> > > > wrote:
>>>>>> >
>>>>>> > > > Hi Nick,
>>>>>> > > > > Not functioning how?
>>>>>> > > > I want to reuse existing apps, so I cleared data and indexes. I
>>>>>> am not
>>>>>> > > > seeing any data in data viewer or any index in indexes.  But
>>>>>> when
>>>>>> > > > trying to import new app I am getting index quota error.. I
>>>>>> just got
>>>>>> > > > the alert sayin

Re: [google-appengine] Re: Over index creation quota

[Alejandro González Rodrigo]

>> >
>>>> > > > > On Wed, Oct 14, 2009 at 12:00 PM, Dinesh <
>>>> >
>>>> > > > > dinesh.varadhara...@**orangescap**e.com> wrote:
>>>> >
>>>> > > > > > Hi Nick,
>>>> > > > > > thanks for the immediate reply.. I cleared data and vacuumed
>>>>  indexes
>>>> > > > > > in 4 of my apps. (Created new apps as old apps are not
>>>> functioning).
>>>> >
>>>> > > > > Not functioning how?
>>>> >
>>>> > > > > > But still it is throwing the quota exception. The app ids are
>>>> >
>>>> > > > > > os-demo
>>>> > > > > > osruntime
>>>> > > > > > osclouddemo
>>>> > > > > > osruntime
>>>> >
>>>> > > > > Are all of these apps out of index quota?
>>>> >
>>>> > > > > > And we might be terribly needing support for more than 100
>>>> indexes for
>>>> > > > > > our apps and are ready to pay for the overuse. I don't think
>>>> it is
>>>> > > > > > part of billing. any thoughts of including it..
>>>> >
>>>> > > > > Requiring more than 100 indexes is usually a sign of a schema
>>>> design that
>>>> > > > > needs optimizing. We can increase the index quota, but only in
>>>> > > > exceptional
>>>> > > > > circumstances.
>>>> >
>>>> > > > > > Thanks,
>>>> > > > > > Dinesh
>>>> >
>>>> > > > > > On Oct 14, 3:52 pm, "Nick Johnson (Google)" <
>>>> nick.john...@google.com>
>>>> > > > > > wrote:
>>>> > > > > > > Hi Dinesh,
>>>> > > > > > > All apps are limited to 100 indexes. If you are getting
>>>> this error on
>>>> > > > an
>>>> > > > > > app
>>>> > > > > > > that has fewer than 100 indexes, please let me know which
>>>> one it is,
>>>> > > > and
>>>> > > > > > I
>>>> > > > > > > will reset your index count quota.
>>>> >
>>>> > > > > > > -Nick Johnson
>>>> >
>>>> > > > > > > On Wed, Oct 14, 2009 at 11:50 AM, Dinesh <
>>>> >
>>>> > > > > > > dinesh.varadhara...@**orangescap**e.com> wrote:
>>>> >
>>>> > > > > > > > Hi,
>>>> > > > > > > > Suddenly I am getting
>>>> >
>>>> > > > > > > > "Over index creation quota: The API call
>>>> datastore_v3.CreateIndex()
>>>> > > > > > > > required more quota than is available."
>>>> >
>>>> > > > > > > > when trying to update indexes. however few of my older
>>>> applications
>>>> > > > > > > > has more than 100 indexes it it. Is this limitation newly
>>>> > > > introduced
>>>> > > > > > > > in gae. If so, how do I increase the quota.
>>>> >
>>>> > > > > > > > Dinesh
>>>> >
>>>> > > > > > > --
>>>> > > > > > > Nick Johnson, Developer Programs Engineer, App Engine
>>>> > > > > > > Google Ireland Ltd. :: Registered in Dublin, Ireland,
>>>> Registration
>>>> > > > > > Number:
>>>> > > > > > > 368047
>>>> >
>>>> > > > > --
>>>> > > > > Nick Johnson, Developer Programs Engineer, App Engine
>>>> > > > > Google Ireland Ltd. :: Registered in Dublin, Ireland,
>>>> Registration
>>>> > > > Number:
>>>> > > > > 368047
>>>> >
>>>> > > --
>>>> > > Nick Johnson, Developer Programs Engineer, App Engine
>>>> > > Google Ireland Ltd. :: Registered in Dublin, Ireland, Registration
>>>> Number:
>>>> > > 368047
>>>>
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Re: [google-appengine] DATASTORE VIEWER

[Alejandro González Rodrigo]

Hello,

You have 2 options:

1 - In the old console ( appengine.google.com ) in the datastore viewer you
can play with this two params in the URL: &limit=20&offset=20
2 - You can access the new console ( cloud.google.com/console ) click in
your project and then you can use the *Cloud Datastore -> Query* section to
Query the Datastore, and in this case google loads more results as you keep
scrolling down the page




2013/10/15 Martin Descours 

> On appengine i make requests on the databases, but i am limited to 20
> results by Page
> how can i make this 20 go up to 100 ?
> thx for your help !
> Martin
>
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Re: [google-appengine] Re: Error : Key kind string must be a non-empty string up to 500bytes

[Alejandro González Rodrigo]

You can have 2 problems here:

1 - You are creating an entity with an empty key
2 - Your entity key exceeds 500 bytes

See this:
http://stackoverflow.com/questions/2557632/how-long-max-characters-can-a-datastore-entity-key-name-be-is-it-bad-to-haver

¿What are your trying to do, and how? If you want help you need to provide
more info.


2013/10/14 timh 

> help what ?
>
> You need to provide a lot more information here if you want some help
>
>
> On Monday, October 14, 2013 4:53:59 PM UTC+8, Vijay Kumbhani wrote:
>>
>> help
>>
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[google-appengine] Re: GAE Newbie question - User Login page

[Alejandro González Rodrigo]

Hello,

There is a lot of ways of doing and securing your application.

GAE has an 
UserService
 and 
easy tutorials the get it rolling. You have security 
constrainsas
 well, that can secure the urls you want and the only thing you need is 
to define them in your web.xml
To secure services i would use 
Filtersrather
 than implementing the security in each servlet doGet/doPost, this 
way you have all security centralized and the same for all servlets calls.

Cheers!


On Wednesday, August 7, 2013 7:10:35 PM UTC+2, Jimin Park wrote:
>
> I am new to the web application development and recently ventured on a 
> journey to build one (was not aware of the servlets prior to this so I am 
> really new). I am stuck on creating the log-in page using OpenID.
>
> If I want every single page to require the user to be logged in to even 
> view, how would I achieve this using servlets? Would I be putting in user 
> login status at the beginning of doGet() of all servlets and if the user is 
> not logged in, redirect to the log-in page and redirect back to the 
> servlet? This seems like some boiler-plate code, is there some kind of 
> configuration I can do to achieve the same thing easily?
>
> Also, I do appreciate Google's openID documentation, it is not detailed 
> enough for me to understand how the work flow is in this framework. Is 
> there a helpful tutorial site anyone knows? Had not much luck in google 
> searches either...
>
> Thanks guys!
>

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[google-appengine] Re: Securing web services

[Alejandro González Rodrigo]

As far as i know there is nothing in appengine to do something like that 
(securize web services / API / endpoints ) you need to do it on your own.

I dont know your whole scenario, but a standard way to secure web services 
is oAuth2 with the Client Credentials flow (in your case, with no end 
users). This way the app that wants to call your services, needs to be 
identifyed before he can request nothing to you. What you need to do is 
oAuth provider in your server to handle all authentications and store 
clients keys and secrets. There are some good opensource libraries to 
handle all oAuth stuff

If you dont want go that far, you can keep it simplier with an API-Key 
schema, but is less secure.

Cheers


On Wednesday, August 7, 2013 10:29:38 AM UTC+2, Thomas Bailey wrote:
>
> We have an appengine application that exposes a set of web service 
> endpoints.
> We need to secure these endpoints such that only specific applications can 
> access them. This will be programmatic access, so there will be no user 
> involvement (i.e. no login screens).
>
> Looking at the documentation it seemed like service accounts would give us 
> this ability, however this only seems to give access to the google API.
>
> Is there a standard way to secure appengine web services, or do we need to 
> roll our own solution?
>
> Any pointers much appreciated!
>

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Re: [google-appengine] Can't integrate GCS to existing AppEngine project

[Alejandro González Rodrigo]

Try from https://cloud.google.com/console


2013/8/6 Kaan Soral 

> On Appengine Console > Administration > Application Settings > Cloud
> Integration
> I've triggered the project creation, but it always results in an error and
> suggests a retry (a retry button appears)
>
> On https://cloud.google.com/console
> I see all my apps, however none has Google Cloud Storage on them, they all
> have Appengine / Big Query / Datastore, but no GCS
> I've also have billing enabled for a long time
>
> What should I be doing?
>
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[google-appengine] Re: Problems with custom domain and SSL, stopped working

[Alejandro González Rodrigo]

I have exactly the same problem. The custom domain was working for a couple 
of months and suddenly, last night, its stop working.

Any info to fix this problem would be appreciated, since this is an issue 
with an application in a production environment.

Thanks.


On Tuesday, November 20, 2012 3:25:03 PM UTC+1, Jesse Crocker wrote:
>
> Last week(wednesday) I added a custom domain and ssl with sni to one of my 
> apps that has been running for a while on an appspot.com subdomain.  The 
> custom domain and ssl worked fine until last night, but now a request over 
> http returns a 404 error, and a request over https times out.  Requests to 
> the appspot.com subdomain still work fine.  Requests made to the custom 
> domain are not showing up in the log.
>
> I did not make any changes to the configuration, it just stopped working 
> after working for 4 days.
>
> Any suggestions?
>

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