On 07/25/2016 05:07 AM, Simo Sorce wrote:
On Mon, 2016-07-25 at 10:50 +0200, Jan Cholasta wrote:
Anyway, my main grudge is that the transformation rules shouldn't
be stored on and processed by the server. The server should know the
*what* (mapping rules), but not the *how* (transformation rules). The
*how* is an implementation detail and does not change in time, so
there's no benefit in handling it on the server. It should be handled
exclusively on the client, which I believe would also make the whole
thing more robust (it would not be possible for a bug on the server
break all the clients).
W/o entering in specific +1 as a general comment on this.
If it can be done on the client, probably better be done there.


My thinking was that while the CSR generation must be done on the client, the retrieval and formatting of the data for the CSR should be done on the server, so that the functionality is available to all consumers of the API (ipa command-line, certmonger, Web UI, something else?). I imagine it would be relatively easy to move the formatting stuff into the ipa CLI, but all the other clients would then need an implementation of their own, and so we'd need to worry about interpreting the templates and generating CSRs in multiple different languages. It's true that as it stands a bug on the server could break all the clients, but on the other hand there's only one implementation to maintain, rather than a different one in each client.

But maybe I'm not seeing the proper priorities here. Perhaps it's more of a problem because clients are easier to update with bugfixes than the server? Or maybe the preference for the client is for scalability reasons? Could you tell me more about why you prefer a client implementation?

(And yeah, everything here carries a disclaimer of "I probably can't make any large changes in the remaining 3 weeks of my internship," but I think it's still good to know and document what the limitations of the current implementation are.)


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