4. Transformers Architecture

Status

Approved

Context

We can develop event transformers either using the “Backend” architecture or “Processor” architecture. Making the transformers “backends” will result in relatively more nesting in the configurations as this “backend” will have its own configurations.

If we decide to develop the event transformers as “processors”, it will result in less complexity in the code since the transformer can be easily appended in any backend’s (router or logger) processors’ pipeline.

Decision

Transformers will be developed as event processors that can be added in any backend’s pipeline. Then the transformed events can be used for any purpose, either for simply logging using the LoggerBackend or to route events using EventRoutingBackend.

Consequences

Developing transformers as processors will result in relatively less complex configurations and it would provide us wider range of use cases for the transformers.