It looks like the URL that you specified for the callback in createUploadURL does not exist - there's a 404 when we try and call it.
On Friday, 9 March 2012 22:39:58 UTC+11, Killian wrote: > > > 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 :-) >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>> -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To view this discussion on the web visit https://groups.google.com/d/msg/google-appengine-java/-/9r3EKX4CVjoJ. To post to this group, send email to google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. 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