search

fp7-netide / Engine

App Engine to enable Network App programs to be executed, systematically tested, and refined on a variety of concrete SDN platforms
Eclipse Public License 1.0
10 stars 11 forks source link

some problems with the keyword ParallelCall in compositionSpecification.xml #145

Closed Maoyuxing closed 7 years ago

Maoyuxing commented 7 years ago

Hi, I noticed if I wrote the xml file like this: /Modules Composition ParallelCall resolutionPolicy="priority" ModuleCall module="learningswitch" priority="1" / ModuleCall module="SimpleSwitch" priority="1" / /ParallelCall /Composition

that means, with the keyword ParallelCall, the two backends with learningswitch and simpleswitch apps running on them respectively work well. However, if I wrote the xml file like this:

Composition ModuleCall module="learningswitch"/ ModuleCall module="SimpleSwitch"/ /Composition that means, without the keyword ParallelCall, the backends can not work properly. I noticed that in your code, there are different work flows for those with and without ParallelCall. I wonder what is the different? Thank you!

schwabe commented 7 years ago

Yes, serial composition is not really implemented that is why you are seeing the problems. See https://irtf.org/anrw/2016/anrw16-final24.pdf for more information about serial composition and why it is difficult to implement.