Assembler with two modes: routing handler, event bus module

[tomaszmichalak]

Version used

• knot.x: 1.3.0

Context of the issue/feature

Knot.x server with OpenAPI-based router allows to define custom handlers for particular operations. This is the way how we can configure custom assembler. So we do not have to use the Vert.x Event Bus when we do not plan to scale that module (it prevents serialization overhead for a local assembler).

We should provide the solution where assembler can be configured as a local handler and event bus module (for the cluster mode).

Appendix

• https://github.com/Cognifide/knotx/blob/feature/request-api-configuration/knotx-core/src/main/java/io/knotx/server/handler/api/RoutingHandlerFactory.java

[2kodes]

Curious if you have seen the below? scheduled for release in vertx 3.6

https://vertx-ci.github.io/web-site-snapshot/docs/vertx-web-api-service/java

[tomaszmichalak]

Assembler was reimplemented and allows to define it as a custom handler: https://github.com/Knotx/knotx-server-http. Not Vert.x Event Bus option available by default.