A. Soroka created CASSANDRA-15005:
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Summary: Configurable whilelist for UDFs
Key: CASSANDRA-15005
URL: https://issues.apache.org/jira/browse/CASSANDRA-15005
Project: Cassandra
Issue Type: Improvement
Components: CQL/Interpreter
Reporter: A. Soroka
I would like to use the UDF system to distribute some simple calculations on
values. For some use cases, this would require access only to some Java API
classes that aren't on the (hardcoded) whitelist (e.g.
{{java.security.MessageDigest}}). In other cases, it would require access to a
little non-C* library code, pre-distributed to nodes by out-of-band means.
As I understand the situation now, the whitelist for types UDFs can use is
hardcoded in java in
[UDFunction|[https://github.com/apache/cassandra/blob/trunk/src/java/org/apache/cassandra/cql3/functions/UDFunction.java#L99].]
This ticket, then, is a request for a facility that would allow that list to be
extended via some kind of deployment-time configuration. I realize that serious
security concerns immediately arise for this kind of functionality, but I hope
that by restricting it (only used during startup, no exposing the whitelist for
introspection, etc.) it could be quite practical.
I'd like very much to assist with this ticket if it is accepted. (I believe I
have sufficient Java skill to do that, but no real familiarity with C*'s
codebase, yet. :) )
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