The appid is linguabox10
In the mean time I deleted the blobs which I had uploaded and since
yesterday when I click on the blob viewer in the app engine dashboard I get
a message
"Oops! We couldn't retrieve your list of Kinds."
I'm not sure if these issues are related?
Thanks for your help
Killian
On Friday, 9 March 2012 11:04:30 UTC, Stuart Langley wrote:
>
> You said the blob ends up in the blobstore but your webhook is not called?
>
> What's the appid?
>
> On Friday, 9 March 2012 21:32:58 UTC+11, Killian wrote:
>>
>> Hi Stuart,
>>
>> Yes apologies if I wasn't clear.
>>
>> On the app engine side of things I'm calling createUploadURL and placing
>> the resulting url in the task payload as follows:
>>
>> BlobstoreService blobstoreService =
>> BlobstoreServiceFactory.getBlobstoreService();
>>
>> String uploadURL = blobstoreService.createUploadUrl("/"+url);
>>
>> task.payload(uploadURL);
>>
>>
>> Alternatively, would anyone know of sample code in java trying to
>> programmatically upload blobs from an external app (posting a response to a
>> pull task queue) might make things easier. I'm surprise I couldn't find
>> anything like that on the web.
>>
>> In a nutshell all I'm trying to do is reproduce the architecture of the
>> first pull task system presented in the Google I/O talk
>> http://youtu.be/AM0ZPO7-lcE in java, to place a response to the pull
>> task queue for the app engine app to consume.
>>
>> Thanks for your help :-)
>>
>>
>>
>> On Thursday, 8 March 2012 22:13:45 UTC, Stuart Langley wrote:
>>>
>>> Is that the actual code?
>>>
>>> You need to call createUploadURL for each blob you want to upload.
>>>
>>> On Friday, 9 March 2012 00:03:43 UTC+11, Killian wrote:
>>>>
>>>> Hi Lads,
>>>>
>>>> This issue has been bugging me for a while now and just wasted the last
>>>> 2 days with no solution found. I'm getting desperate at this stage !
>>>>
>>>> My aim was to use the Task Queue Pull service to run some NLP
>>>> processing outside of app engine on an external VM. That's working fine
>>>> however all the trouble started when I discovered that the output produced
>>>> by the external VM could be fed back into the Task Queue. Following the
>>>> example in the Google I/O video http://youtu.be/AM0ZPO7-lcE , I then
>>>> decided to provide the response of the task queue as a Blob upload to the
>>>> app engine.
>>>> So I have the working example
>>>> http://code.google.com/appengine/docs/java/blobstore/overview.htmlimplement
>>>> and working perfectly. (ie: I can manually upload a file using
>>>> the jsp form and store it).
>>>>
>>>> The problem is that for obvious reasons I need to send this post
>>>> request from the VM programmatically. And that's were things start getting
>>>> messy. Since the video only provides an example in Python and not in java
>>>> I've been struggling find a solution to this.
>>>>
>>>> Looking around it seems like I need the httpcomponents-client-4.1.3
>>>> apache library to create post requests.
>>>> So this is the workflow I have:
>>>> I generate the upload url from the app engine side and place it in the
>>>> task queue payload which is then retrieved by the VM correctly.
>>>>
>>>> on the VM side this is what I do:
>>>>
>>>> String uploadURL =
>>>> "http://<host>/_ah/upload/agtsaW5ndWFib3gxMHIbCxIVX19CbG9iVXBsb2FkU2Vzc2lvbl9fGAEM"
>>>> ;
>>>>
>>>> DefaultHttpClient httpclient = new DefaultHttpClient();
>>>>
>>>> HttpPost method = new HttpPost(uploadURL);
>>>>
>>>> MultipartEntity entity = new MultipartEntity();
>>>>
>>>> File f = new File("dummyFileToUpload.txt");
>>>>
>>>> FileBody fileBody = new FileBody(f);
>>>>
>>>> entity.addPart("myFile", fileBody);
>>>>
>>>> method.setEntity(entity);
>>>>
>>>> HttpResponse response = httpclient.execute(method);
>>>>
>>>> System.out.println(response.getStatusLine());
>>>>
>>>> PROBLEM:
>>>>
>>>> When I do this both in development mode or production mode, I receive a
>>>> "http 404 not found" response. and it seems like the upload servlet isn't
>>>> run at all (if I'm in deug mode for instance). However when I look in the
>>>> blob store, the blob was indeed uploaded correctly which is good news of
>>>> course however it means I can't get a proper response from the app engine
>>>> side and more importantly can't run anything in the upload servlet.
>>>>
>>>> I'm guessing my post request mustn't be created properly which would
>>>> explain why the app engine side is reacting weird? Is there anything
>>>> obviously wrong in my approach?
>>>>
>>>> Would really appreciate any advice on this.
>>>>
>>>> Thanks in advance :-)
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>
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