I am currently using a HTTP method for invoking some URL which will create a JIRA issue.
Now I want to use Apache Camel, how can I use that?
I need to invoke
See also this FAQ about using dynamic to endpoints in Camel http://camel.apache.org/how-do-i-use-dynamic-uri-in-to.html
Essentially the EIP pattern for this is the recipient list.
So in your case it could also be simplified to as one EIP
http://localhost:8080/rest/api/2/project/${header.myKey}/components
Mind the http component in Camel is fully synchronous. If you want to do request/reply over HTTP and avoid having the caller block while waiting for the reply message, then you can use some of the other HTTP components from Camel such as: