[ckan-discuss] CKAN 2.2 and persistence of URI for static file needing update

[David Raznick]

Hello

That is correct and the old url should be still accessible if the ofs
configuration is still there.

The 2.2a  meant each time you updated a new file the timestamp
changed, meaning the user could never guess the updated file without
going through the interface.  The new 2.2 url means that the new url
will remain permanent.

David

On 17 February 2014 14:19, Stéphane Guidoin <stephane at opennorth.ca> wrote:
> From what I saw, the real change was between 2.2a and 2.2b.
>
> In 2.2a, the file was stored with the following url:
> http://donnees.ville.montreal.qc.ca/storage/f/2013-12-06T18%3A52%3A46.322Z/electiongene-2009-posteselectifs-ancien.csv
>
> There is a timestamp in the URL.
>
> In 2.2b
> http://localhost/dataset/43d6328d-e289-4553-982e-c4801dbfca0a/resource/746f65a3-c8a5-4a9a-b6ae-6e860405b56b/download/availabilityoffacilitiesthatofferservices.csv
>
> The timestamp has been replaced by a concatenation of the dataset id and the
> resource id.
>
> Steph
>
>
>
> On Mon, Feb 17, 2014 at 4:05 AM, David Raznick <david.raznick at okfn.org>
> wrote:
>>
>> Hello
>>
>> I am not sure this is the case.  In fact version 2.2 made the URLs of
>> uploaded files to the filestore much more permanent. In the past any
>> new uploaded data caused a new URL to be created.  Now all URLs are
>> always of the form
>>
>>
>> http://HOST/dataset/<dataset_id>/resource/<resource_id>/download/filename.ext
>>
>> Even if the filename of the new file you uploads name has changed you
>> are able to get at it using the old filename. i.e
>>
>>
>> http://HOST/dataset/<dataset_id>/resource/<resource_id>/download/oldfilename.ext
>>
>> Not only that
>>
>> http://HOST/dataset/<dataset_id>/resource/<resource_id>/download
>>
>> is always a permanent link for any resource even for ones that have
>> not been uploaded as it will redirect to the correct location.
>>
>> So I am confused as to why this is thought to be the case.  Clear
>> examples of where this is happening would be very appreciated.
>>
>> Thanks
>>
>> David
>>
>> On 14 February 2014 15:56, Diane Mercier <diane.mercier at gmail.com> wrote:
>> > Hi,
>> >
>> > Our sysadmin tells us that version 2.2 of CKAN has changed the
>> > management
>> > method of the URL of resources: a file in the fileStore can no longer be
>> > replaced by a new one without a new URL  ... This has significant
>> > impacts on
>> > the persistence of URIs for static files needing corrections (not
>> > version)
>> > and, so on the reuse of updated data. In this case, the user must
>> > navigate
>> > through the catalogue to get the right URL for each reuse! URL of static
>> > files are not useful in applications.
>> >
>> > Do you have solutions to propose, for example, using the API or method
>> > of
>> > redirection (handle) of the URL?
>> >
>> > I am very concerned by the persistence of URIs
>> >
>> > Thank you for help and suggestion, and apologize my english ;-)
>> >
>> > Regards,
>> >
>> > --
>> > Dre Diane Mercier
>> > Ph.D. Sciences de l'information
>> >
>> > Chargée de projet principale des données ouvertes
>> > @MTL_DO | donnees.ville.montreal.qc.ca
>> > dmercier at ville.montreal.qc.ca
>> > donneesouvertes at ville.montreal.qc.ca
>> > 514 872-9702
>> >
>> > « Pas de données ouvertes, sans logiciel libre ni formats ouverts »
>> >
>> >
>> >
>> > _______________________________________________
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>
>
>
> --
> Stéphane Guidoin
> Director, Transportation
> Open North
> 514-862-0084
> http://opennorth.ca
> Twitter: @opennorth / @hoedic