Apache Camel Developer's Cookbook

Controlling route startup and shutdown

When integration logic is composed of routes depending on other routes via direct:, it is important that they start up in such a way that dependencies are available before exchanges start flowing. If not, you are likely to see this sort of exception being thrown:

org.apache.camel.CamelExchangeException: No consumers available on endpoint: Endpoint[direct://someMissingEndpoint]

Conversely, on application shutdown, messages should complete processing gracefully rather than fail because a dependent route is no longer available. Camel provides a mechanism to define an order for startup and shutdown that addresses both of these issues at the same time.

This recipe will show you how to control the startup and shutdown ...