I was having the exact same problem with namespaces and the local dev
server not honoring them for some entries. I applied the same workaround as
Ken and am able to retrieve files programmatically.
So is this a bug in the Dev server implementation or does this mean cloud
storage does not officially support namespaces? I haven't pushed this code
to the google servers yet so I am not sure if I would encounter the same
issue without the workaround.
Thanks,
Troy
On Friday, November 22, 2013 12:40:05 PM UTC-5, k...@form-runner.com wrote:
>
> Nailed the culprit!
>> We make extensive use of namespaces, and in my original post, there turns
>> out to be an unfortunate interaction between namespaces and the GCS client
>> API.
>>
>> Down in my original post, where I laid out all the data I could find in
>> the Development Console, you will see that there are entries in the empty
>> namespace and a different namespace:
>>
>> In __GsFileInfo__ (in the empty Namespace)
>> ….blah … blah
>>
>> In Namespace 5629499534213120 (where everything ran):
>> In _ah_FakeCloudStorate_formrunnerbucket-r7yh23nb2:
>> …. blah…. blah
>>
>> The code for writing into GCS ran in namespace 5629499534213120, but it
>> wrote part of it's data into the empty namespace.
>>
>> The (successful) experiment was to ensure that all the GCS API code (read
>> and write) runs in the empty namespace, conceptually thus:
>>
>> private byte[] readFromFile(GcsFilename fullGcsFilename) throws
>> IOException
>> {
>> String in_ns = NamespaceManager.get();
>> NamespaceManager.set(null);
>> int fileSize = (int) gcsService.getMetadata(fullGcsFilename).getLength();
>> ByteBuffer result = ByteBuffer.allocate(fileSize);
>> GcsInputChannel readChannel = gcsService.openReadChannel(fullGcsFilename,
>> 0);
>> try {
>> readChannel.read(result);
>> } finally {
>> readChannel.close();
>> }
>> byte[] toreturn=result.array();
>> NamespaceManager.set(in_ns);
>> return toreturn;
>> }
>>
>> Now the FileNotFound does not occur, and I do get (some) bytes back,
>> about 1/10 of the 1.2MB. Presumably when I switch to ObjectStreaming, I'll
>> get all.
>> Cheers,
>> --Ken
>>
>
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