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, 15 insertions, 7 deletions

diff --git a/opendc-compute/opendc-compute-simulator/src/test/kotlin/org/opendc/compute/simulator/SimHostTest.kt b/opendc-compute/opendc-compute-simulator/src/test/kotlin/org/opendc/compute/simulator/SimHostTest.kt
index 5ba4a667..a7993291 100644
--- a/opendc-compute/opendc-compute-simulator/src/test/kotlin/org/opendc/compute/simulator/SimHostTest.kt
+++ b/opendc-compute/opendc-compute-simulator/src/test/kotlin/org/opendc/compute/simulator/SimHostTest.kt
@@ -30,16 +30,20 @@ import org.junit.jupiter.api.assertAll
 import org.opendc.compute.api.*
 import org.opendc.compute.service.driver.Host
 import org.opendc.compute.service.driver.HostListener
-import org.opendc.simulator.compute.kernel.SimFairShareHypervisorProvider
+import org.opendc.simulator.compute.SimBareMetalMachine
+import org.opendc.simulator.compute.kernel.SimHypervisor
 import org.opendc.simulator.compute.model.MachineModel
 import org.opendc.simulator.compute.model.MemoryUnit
 import org.opendc.simulator.compute.model.ProcessingNode
 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.compute.workload.SimTrace
 import org.opendc.simulator.compute.workload.SimTraceFragment
 import org.opendc.simulator.compute.workload.SimTraceWorkload
 import org.opendc.simulator.core.runBlockingSimulation
 import org.opendc.simulator.flow.FlowEngine
+import org.opendc.simulator.flow.mux.FlowMultiplexerFactory
 import java.time.Instant
 import java.util.*
 import kotlin.coroutines.resume
@@ -67,14 +71,16 @@ internal class SimHostTest {
     fun testOvercommitted() = runBlockingSimulation {
         val duration = 5 * 60L
         val engine = FlowEngine(coroutineContext, clock)
+        val machine = SimBareMetalMachine(engine, machineModel, SimplePowerDriver(ConstantPowerModel(0.0)))
+        val hypervisor = SimHypervisor(engine, FlowMultiplexerFactory.maxMinMultiplexer(), SplittableRandom(1), null)
         val host = SimHost(
             uid = UUID.randomUUID(),
             name = "test",
-            model = machineModel,
             meta = emptyMap(),
             coroutineContext,
-            engine,
-            SimFairShareHypervisorProvider()
+            clock,
+            machine,
+            hypervisor
         )
         val vmImageA = MockImage(
             UUID.randomUUID(),
@@ -149,14 +155,16 @@ internal class SimHostTest {
     fun testFailure() = runBlockingSimulation {
         val duration = 5 * 60L
         val engine = FlowEngine(coroutineContext, clock)
+        val machine = SimBareMetalMachine(engine, machineModel, SimplePowerDriver(ConstantPowerModel(0.0)))
+        val hypervisor = SimHypervisor(engine, FlowMultiplexerFactory.maxMinMultiplexer(), SplittableRandom(1), null)
         val host = SimHost(
             uid = UUID.randomUUID(),
             name = "test",
-            model = machineModel,
             meta = emptyMap(),
             coroutineContext,
-            engine,
-            SimFairShareHypervisorProvider()
+            clock,
+            machine,
+            hypervisor
         )
         val image = MockImage(
             UUID.randomUUID(),