An open discussion list for topics related to the eduGAIN interfederation service.

[Ian Young <ian AT iay.org.uk>]

> On 2020-03-10, at 16:21, Davide Vaghetti <davide.vaghetti AT garr.it> wrote:
> 
> And just for information: Ian's writing an import filter for the UK 
> federation to discard logos above a threshold. We've yet to discuss what 
> the threshold is (could be 40kB, maybe 100kB). When we do that, I presume 
> the modified entries will show as WARN messages in the UK federation 
> metadata import logs at 
> https://www.ukfederation.org.uk/fed/edugain-import-log-with-diff.txt

That's the idea. Here's an example (based on thresholds that were chosen to 
illustrate both messages we're considering issuing and are not proposals in 
themselves):

[java] WARN  - Item https://you.know.which.one/ was marked with the following 
Warning status messages
[java] WARN  -     strip_mdui_logo_length: removed mdui:Logo with long 
contents: 145994 > 80000
[java] WARN  -     strip_mdui_logo_length: removed mdui:Logo with long 
contents: 161018 > 80000
[java] WARN  -     strip_mdui_logo_length: removed mdui:Logo with long 
contents: 159718 > 80000
[java] WARN  -     check_mdui_logo_length: mdui:Logo has long contents: 79626 
> 50000
[java] WARN  -     check_mdui_logo_length: mdui:Logo has long contents: 78710 
> 50000

I hope that's self-explanatory. The two thresholds allow us to indicate 
concern at one level, enforce a higher one, and give feedback about both. We 
might have separate thresholds any time we're thinking of moving the 
enforcement threshold downwards.

Note that the proposal is that --- unlike everything else currently in that 
daily report --- these are warnings, and affected entities won't be removed 
from the UKf aggregate unless they *also* trip an ERROR status for some other 
reason.

    -- Ian

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