RCStream allows for simple wildcard based filtering on wiki database name. Since EventStreams topics could have arbitrary (schemaed) JSON data in them, we should provide more generic filtering options, (if we should do server side filtering at all). Kasocki had a couple of custom filtering options built in, but it was not decided if we ever should use them.
An idea is to use @query/schema to do fancy query param -> jsonschema based filtering. However, many nodejs jsonschema packages speed up validation by using code generation. We probably shouldn't generate code based on user input. :/
This ticket can be used to decide if we should implement server side filtering at all, and if we should, how.