* refactor (controller): Use a grpc server for the grpc-gateway
This starts a grpc server for the grpc-gateway. The new gateway
server uses an in-memory listener which also supports "dialing", so
the http proxy can connect to the in-memory listener.
This change allows us to use all grpc server features and was in part
motivated by a need for an interceptor of inbound requests. With that
said, having a "proper" grpc server for the gateway will provide a lot
more flexibility and capabilities moving forward.
The request context will still be verified via middleware in the
http proxy (see wrapHandlerWithCommonFuncs). This verified context
will be serialized into a protobuf and sent along to the grpc-gateway
via metadata where an interceptor will add the verified request
info to the request's context (see requestCtxInterceptor). The
interceptor will verify the serialized request info via a shared ticket
with it's companion in-memory http proxy. FYI: the ticket is simply
random base62 string (see db.NewPrivateId).
This change also necessitated a minor change to services. We need to
return an empty response instead of nil, nil when there are no errors
and the response is empty.
* refactor (handlers): Rename gRPC Gateway filter
Originally, this was called an OutgoingInterceptor, which is an
unfortunate name since it's not an interceptor. Now that we're
refactoring the gateway stuff and have proper interceptors, renaming
this should remove ambiguity
* refactor: Rework how 204 with empty msg is handled
Recent changes to grpc gateway has necessitated a change to how
204s are handled by the gateway
* tests (bats): Check status codes for delete operations
* feat (events): Add new options needed for AuditConfig
WithAuditWrapper and WithFilterOperations all for optional paramters
when creating AuditConfig types.
* refactor (event): Change EventerConfig.Sinks to a ptr
We need to modify the SinkConfig.AuditConfig during the NewEventer factory, so we have to use a ptr not a ref.
* feat (events): Add audit configuration types
* feat (events): add audit config to sink configuration.
* feat (events): add redact/encrypt node for audit events to Eventer
Integrate the encrypt.Filter node from the eventlogger into the
event.Eventer, so audit events can be redacted/encrypted based
on data classifications.
* test (events) Add test protobufs for events
Add test protobufs along with a test service for testing
the audit event encrypt node