Hi,
I really appreciate help on how to implement the following requirement:
- Delete all events in a journal belonging to a tenant (=legal requirement
by our Customer)
Current configuration:
- Akka Persistence + Cassandra Plugin
- tag1 is set with DDD aggregate root type using a WriteEventAdapter
(dynamic tagging)
- events have a field in the payload that identifies the tenant
I was thinking to implement this new requirement by setting tag2 with the
tenantId. And when a tenant must be deleted delete all events where tag2 is
set with the TentantId.
But setting tag2 with a dynamic tag is not possible because Tags that are
attached to an event must be a Set[String] (see 1) and defined up front in
a configuration file (see 2).
(1) case class Tagged(payload: Any, tags: Set[String]) { .. }
(2) Sample configuration of cassandra plugin
# When using more than one tag per event you have to configure know
# tags in this section to give each tag an identifier. When using
# only one tag per event the identifier is 1, automatically.
# tagname = tagid
# where tagid must be 1, 2, or 3. Max 3 tags per event is supported.
# For example:
# BlogPosts = 1
# Announcement = 2
# Authors = 1
# With those tag identifiers you can use BlogPosts and Announcement for a
single event,
# but you cannot combine BlogPosts and Authors, since they have the same
tag identifier.
tags {
}
For my requirement of having two dynamic tags just passing a Vector/List
instead of defining Tags in a configuration file seems to be a better fit.
case class Tagged(payload: Any, tags: Vector[Option[String]])
val tags: Vector[Option[String]] = Vector(Some("ddd_aggr_root"),
Some("tenant_id"))
Are there any plans to support dynamic tagging for more than one tag ?
Regards,
Her
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