[infinispan-issues] [JBoss JIRA] (ISPN-5131) Deploy custom cache store to Infinispan Server

[Sebastian Łaskawiec (JIRA)]

    [ https://issues.jboss.org/browse/ISPN-5131?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13040777#comment-13040777 ] 

Sebastian Łaskawiec commented on ISPN-5131:
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Answering my own question - this approach doesn't make sense. The main problem here is to instantiate a CacheLoader/Writer based on {{ConfigureFor}} annotation. This is the most important part of this implementation.

> Deploy custom cache store to Infinispan Server
> ----------------------------------------------
>
>                 Key: ISPN-5131
>                 URL: https://issues.jboss.org/browse/ISPN-5131
>             Project: Infinispan
>          Issue Type: Feature Request
>          Components: Loaders and Stores, Server
>            Reporter: Tristan Tarrant
>            Assignee: Sebastian Łaskawiec
>             Fix For: 7.2.0.Final
>
>
> h2. Overview
> Support the deployment and configuration of a custom cache store.
> h2. Client Perspective
> In order to create a deployable Cache Store the client will have to implement {{AdvancedLoadWriteStoreFactory}} (which will contain factory methods for creating {{AdvancedLoadWriteStore}}). Next, the factory will have to be annotated with {{@NamedFactory}} and placed into a jar together with proper entry of {{META-INF/services/org.infinispan.persistence.AdvancedLoadWriteStoreFactory}}. The last activity is to deploy given jar into Hotrod server.
> h2. Implementation overview
> The implementation is based on Deployable Filters and Converters. 
> Currently all writers and loaders are instantiated in {{PersistenceManagerImpl#createLoadersAndWriters}}. This implementation will be modified to use {{LoadWriteStoreRegistry}}, which will contain a list of {{AdvancedLoadWriteStoreFactories}}. One of the factories will be added by default - the local one (which will the same mechanism as we do now - {{Util.getInstance(classAnnotation)}}. Other {{AdvancedLoadWriteStoreFactories}} will be added after deployment scanning.
> h2. Implementation doubts and questions:
> * Should we expose a factory for {{AdvancedLoadWriteStore}} or should we include also {{ExternalStore}} (or even separate factory for {{CacheLoader}} and {{CacheWriter}}?
> * How to ensure that deployment scanning has finished before creating instantiating {{AdvancedLoadWriteStore}}?



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