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<div class="moz-cite-prefix">Yeah, there might be some risk of
regression. On the other hand, there are DB queries during each
social login or every time when you click on "federated
identities" in account management. <br>
<br>
If you think missing caching is acceptable from performance
perspective etc, I can merge just to master and avoid 1.9.x.<br>
<br>
Marek<br>
<br>
On 22/03/16 17:18, Stian Thorgersen wrote:<br>
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cite="mid:CAJgngAeRXYZ=ATromoj53ZJnWCdMeQM+ON6QLNskGdQam9Qd+A@mail.gmail.com"
type="cite">
<p dir="ltr">Is this really critical for 1.9.x? I'm worried about
us intruding more complexity so late and I'd rather postpone to
2.x.</p>
<div class="gmail_quote">On 22 Mar 2016 15:36, "Marek Posolda"
<<a moz-do-not-send="true" href="mailto:mposolda@redhat.com">mposolda@redhat.com</a>>
wrote:<br type="attribution">
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">On 22/03/16
15:18, Bill Burke wrote:<br>
> Some comments on code:<br>
><br>
> * Why have a special flag in invalidateUser? Just
invalidate the links<br>
> if they exist. Aggressive eviction isn't a bad thing, is
it?<br>
The only reason was performance. The flag "false" is used when
you're<br>
adding new user. But this new user is not yet in cache, so
calling<br>
"getFederatedIdentities" will always need to send DB query to
get all<br>
links of user. But when you're adding new user, you know that
this user<br>
doesn't yet have any social links. So in the end, without the
flag there<br>
will be one more DB query, which will always return empty set.<br>
<br>
Currently we don't support store/load of social links from
federation<br>
provider. But maybe in the future, if we support it and we
chain cache<br>
on top of federation storage, it could theoretically happen
that new<br>
user have social links at the moment when he is registered. So
I can do<br>
what you proposed as it seems to be a bit safer for the
future.<br>
<br>
Marek<br>
><br>
> On a side note, cache needs more refactoring, we're
reusing the same<br>
> pattern over and over. Wonder if functions can help.<br>
><br>
><br>
> On 3/22/2016 5:42 AM, Marek Posolda wrote:<br>
>> Until now, we don't have support for caching of
identityProvider<br>
>> (social) links. So every social login or every going
to "federated<br>
>> identities" tab in account management needs to send
DB queries. I was<br>
>> looking at fixing it and I've send PR<br>
>> <a moz-do-not-send="true"
href="https://github.com/keycloak/keycloak/pull/2404"
rel="noreferrer" target="_blank">https://github.com/keycloak/keycloak/pull/2404</a>
. It turned to be a bit<br>
>> tricky because of:<br>
>><br>
>> 1) Caching needs to be done on both directions. For
social login, you<br>
>> need to lookup user by social link. But on the other
hand, you also need<br>
>> to look all social/identityProvider links of
particular user when you go<br>
>> to account management etc.<br>
>><br>
>> 2) Because of "store token" option, the link may need
to be updated in<br>
>> DB quite often (in theory even during each social
login).<br>
>><br>
>> I was thinking that storing links directly on
CachedUser doesn't work<br>
>> very well, because during each update of social link
(which may be often<br>
>> because of "store token") the user would need to be
fully invalidated<br>
>> from cache. Having separate cache entry for each
social link also has<br>
>> some downsides (many items in cache, need to have
separate entry for<br>
>> store the all links of user anyway). So I ended up
with having the cache<br>
>> entry, which contains list of all links of particular
user. It needs to<br>
>> be updated when any social link is added,removed or
updated. This seemed<br>
>> to me like good compromise. WDYT?<br>
>><br>
>> There are also entries for lookup user by federated
identity, so you<br>
>> don't need to query DB during social login.<br>
>><br>
>> So ATM there are not DB queries during social login
or during go to<br>
>> "federated identities" . I hope I handled all corner
cases and<br>
>> invalidations correctly, but if someone want to take
look it will be<br>
>> good. I don't want to add new regressions atm :-)<br>
>><br>
>> Marek<br>
>><br>
>><br>
>><br>
>><br>
>><br>
>><br>
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