[Smartfrog-developer] LivenessPage in CVS

[Steve L. <ste...@hp...>]

Under components/CDDLM is something to ping URLs for liveness, where 
liveness is defined as returning a response code between optionally 
specifiable min and max response values.

It does the ping during the sfPing call; I plan to move to a fully async 
model later. There is also an enabled flag to turn the thing off; useful 
during debugging as its checks can get in the way of single-stepping 
through code:

Example use:

     wsdlFetch extends LivenessPage {
         port PARENT:cddlm:port;
         page "axis/services/cddlm?wsdl";
         checkFrequency 10;
     }

I am debating letting you specify a reference that gets called after 
successful fetches, this would implement some interface that could be 
used for postprocessing of the content. for example, validating the XML.

Should be useful for testing the jetty component, and anything else that 
serves up content. Once we host Axis under Jetty, the liveness page can 
hit axis' happyaxis.jsp, that verifies that axis thinks all is well.

-steve