gistfile1.py

# This should be in context/vm/base.py
class VMBenchmarkImagePrepare(base.Context):

    def _prepare(self):
        pass

    def setup(self):
        # run VM with image
        # wait unit it starts
        self._prepare()
        # make snapshot and store in context info
        # delete VM 

    def cleanup(self):
        # delete created snapshot


# This should be scenario/vm/base.py
class BenchamrkInVM(base.Scenario):


    def benchmark(*args, **kwargs):  
        # if we have a standard way of triggering benchmark and fetching
        # results, that should be provided by _prepare() then we can have here
        # one method that can be reused. 

        # create VM from snapshot that is provided by benchmark in vm context
        # trigger it
        # wait unit it is finished
        # fetch results
        # delete VM
        # return results



# this should be done in scenario/vm/blogbench.py

class BlogBenchContext(VMBenchmarkImagePrepare): 

    def _prepare(self):
        # DO all operations with VM that are required
        # here you have SSH access to it, and guarantee of access to it. 


class BlogBenchScenario(BenchamrkInVM)

    @validation.requied_context("BlogBenchContext")
    @scenario(context={"keypair": {}, "secgroup": {}})
    def benchamrk(*args, **kwargs):
        super(self).benchmark(*args, **kwargs)