9:54 a.m.
Hi,
I am writing a provider for eventsListener SPI.
Could anyone tell me if the provider and its provider factory need to be thread safe ?
With more details, I need to store some events. To do so, I am using a collection created
by the factory and a reference to this collection is passed to the constructor to update
it.
Does my collection needs to be concurrency-safe or is it not needed?
Best regards,
Romain
1:38 p.m.
Factory is typically application-scoped when provider is typically
request-scoped (hence single-threaded). Different threads can use more
providers concurrently. In other words, provider doesn't need to be
thread-safe (EG. if you are using collection scoped just to the
lifecycle of single provider instance), but factory should be.
For your use-case, your collection needs to be concurrency-safe if I
understand correctly, as it's shared for whole factory and it's possible
that more providers (requests/threads) will concurrently update it.
Marek
On 04/10/17 16:54, Poiffaut Romain wrote:
Hi,
I am writing a provider for eventsListener SPI.
Could anyone tell me if the provider and its provider factory need to be thread safe ?
With more details, I need to store some events. To do so, I am using a collection created
by the factory and a reference to this collection is passed to the constructor to update
it.
Does my collection needs to be concurrency-safe or is it not needed?
Best regards,
Romain
_______________________________________________
keycloak-dev mailing list
keycloak-dev(a)lists.jboss.org
https://lists.jboss.org/mailman/listinfo/keycloak-dev
4:25 a.m.
Thanks a lot for your answer.
Romain
-----Original Message-----
From: Marek Posolda [mailto:mposolda@redhat.com]
Sent: mercredi 4 octobre 2017 20:38
To: Poiffaut Romain <romain.poiffaut(a)elca.ch>; keycloak-dev(a)lists.jboss.org
Subject: Re: [keycloak-dev] Concurrency & EventsListener SPI
Factory is typically application-scoped when provider is typically request-scoped (hence
single-threaded). Different threads can use more providers concurrently. In other words,
provider doesn't need to be thread-safe (EG. if you are using collection scoped just
to the lifecycle of single provider instance), but factory should be.
For your use-case, your collection needs to be concurrency-safe if I understand correctly,
as it's shared for whole factory and it's possible that more providers
(requests/threads) will concurrently update it.
Marek
On 04/10/17 16:54, Poiffaut Romain wrote:
Hi,
I am writing a provider for eventsListener SPI.
Could anyone tell me if the provider and its provider factory need to be thread safe ?
With more details, I need to store some events. To do so, I am using a collection created
by the factory and a reference to this collection is passed to the constructor to update
it.
Does my collection needs to be concurrency-safe or is it not needed?
Best regards,
Romain
_______________________________________________
keycloak-dev mailing list
keycloak-dev(a)lists.jboss.org
https://lists.jboss.org/mailman/listinfo/keycloak-dev
2653
days inactive
2654
days old
2 comments
2 participants
participants (2)
-
Marek Posolda -
Poiffaut Romain