floodlight/floodlight — pull request #56 by alexreimers (2012-03-22 00:11:19+00:00)
Title: Make the module loader more resilient to configuration errors.

1 - Handle the case where you specify more than one module that provides the same service in the config. Print out an error message saying which ones are conflicting.
2 - If a service has more than one implementation and none are specified in the configuration file print out which modules can be used in the error message.