merge: Do not require interference model during topology construction (#102)

This pull request refactors the existing workload interference model in order 
to remove a dependency on it during the topology construction. With this change, 
interference domains (e.g., a single host) can be constructed independently of the 
interference profiles of virtual machines. 

## Implementation Notes :hammer_and_pick:

* Move VM interference model into compute simulator
* Remove convergence listener parameter 
* Remove FlowEngine from SimMachineContext 
* Remove timestamp parameter from SimTrace 
* Pass interference key via parameter
* Move interference logic into VmInterferenceMember 
* Prevent boxing in interference algorithm 
* Extract Random dependency from interference model
* Add separate error host state 
* Simplify constructor of SimHost 
* Make interference domain independent of profile 

## External Dependencies :four_leaf_clover:

* N/A

## Breaking API Changes :warning:

* The interface of `VmInterferenceModel` is changed. Users do not need to 
   provide a seed for the model anymore.
* A `VmInterferenceModel` should be passed via the metadata parameter of 
  `startWorkload` to enable workload interference.

1 files changed, 3 insertions, 2 deletions

diff --git a/opendc-workflow/opendc-workflow-service/src/test/kotlin/org/opendc/workflow/service/WorkflowServiceTest.kt b/opendc-workflow/opendc-workflow-service/src/test/kotlin/org/opendc/workflow/service/WorkflowServiceTest.kt
index 73d1b23b..0fb8b67c 100644
--- a/opendc-workflow/opendc-workflow-service/src/test/kotlin/org/opendc/workflow/service/WorkflowServiceTest.kt
+++ b/opendc-workflow/opendc-workflow-service/src/test/kotlin/org/opendc/workflow/service/WorkflowServiceTest.kt
@@ -33,7 +33,6 @@ import org.opendc.compute.service.scheduler.filters.VCpuFilter
 import org.opendc.compute.service.scheduler.weights.VCpuWeigher
 import org.opendc.compute.workload.ComputeServiceHelper
 import org.opendc.compute.workload.topology.HostSpec
-import org.opendc.simulator.compute.kernel.SimSpaceSharedHypervisorProvider
 import org.opendc.simulator.compute.model.MachineModel
 import org.opendc.simulator.compute.model.MemoryUnit
 import org.opendc.simulator.compute.model.ProcessingNode
@@ -41,6 +40,7 @@ import org.opendc.simulator.compute.model.ProcessingUnit
 import org.opendc.simulator.compute.power.ConstantPowerModel
 import org.opendc.simulator.compute.power.SimplePowerDriver
 import org.opendc.simulator.core.runBlockingSimulation
+import org.opendc.simulator.flow.mux.FlowMultiplexerFactory
 import org.opendc.trace.Trace
 import org.opendc.workflow.service.scheduler.job.NullJobAdmissionPolicy
 import org.opendc.workflow.service.scheduler.job.SubmissionTimeJobOrderPolicy
@@ -73,6 +73,7 @@ internal class WorkflowServiceTest {
             coroutineContext,
             clock,
             computeScheduler,
+            seed = 0,
             schedulingQuantum = Duration.ofSeconds(1)
         )
 
@@ -130,7 +131,7 @@ internal class WorkflowServiceTest {
             emptyMap(),
             machineModel,
             SimplePowerDriver(ConstantPowerModel(0.0)),
-            SimSpaceSharedHypervisorProvider()
+            FlowMultiplexerFactory.forwardingMultiplexer()
         )
     }
 }