[infinispan-issues] [JBoss JIRA] (ISPN-9604) Support for converters in the request format

[Gustavo Fernandes (Jira)]

Gustavo Fernandes created ISPN-9604:
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             Summary: Support for converters in the request format
                 Key: ISPN-9604
                 URL: https://issues.jboss.org/browse/ISPN-9604
             Project: Infinispan
          Issue Type: Feature Request
          Components: Listeners, Remote Protocols
    Affects Versions: 9.4.0.Final
            Reporter: Gustavo Fernandes
            Assignee: Gustavo Fernandes


As described in the [docs|http://infinispan.org/docs/stable/user_guide/user_guide.html#event_marshalling], a filter/converter can optionally specify a {{MediaType}} to process events, and let Infinispan perform the conversion between the storage format and the chosen format. The last step, in case it's needed, it to convert the event to the request format, which is the format that the cache was decorated with the {{withMediaType(...)}} method when the listener registration was performed.

Some converters, such as {{org.infinispan.server.hotrod.KeyValueVersionConverter}} (used in NearCache and the Spark Connecor) cannot work in this scheme since as part of its operation, it reads the stored key and values and creates a new value which is the aggregation of the Key and the Value in the byte[] format, thus preventing the final transformation step to the request mediatype.

For this case it'd be interesting to have the possibility of applying the converters's convert() operation *after* having transformed the Key and Values to the final request format, therefore the final event value will be an aggregated byte[] but in the user requested format.



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