Introduction
Each step of an Apache Camel Application triggers an event that allows us to read or edit data while the message travels on the "Route." The provided mechanism to access these events is the EventNotifierSupport class.
Apache Camel's route is a sequence of steps, executed in order by Camel, that consumes and processes a message. The initial point of this sequence is represented by the method from(). A route may have many processing components that modify a message or send it to an endpoint.