compute: Improvements to cloud compute model (v1)

This is the first of the pull requests in an attempt to improve the existing cloud compute model (see #86). This pull request restructures the compute API and splits the consumer and service interfaces into different modules:

- opendc-compute-api now defines the API interface for the OpenDC Compute module, which can be used by consumers of the OpenDC Compute service.
- opendc-compute-service hosts the service implementation for OpenDC Compute and contains all business logic regarding the IaaS platform (such as scheduling).
- opendc-compute-simulator implements a "compute driver" for the OpenDC Compute platform that simulates submitted workloads.
- Image is now a data-class and does not specify itself the workload to simulate. Instead, the workload should be passed via its tags currently (with key "workload"). In the future, the simulation backend will accept a mapper interface that maps Images to Workloads.

2 files changed, 45 insertions, 5 deletions

diff --git a/simulator/opendc-workflows/src/test/kotlin/org/opendc/workflows/service/StageWorkflowSchedulerIntegrationTest.kt b/simulator/opendc-workflows/src/test/kotlin/org/opendc/workflows/service/StageWorkflowSchedulerIntegrationTest.kt
index 2bfcba35..4207cdfd 100644
--- a/simulator/opendc-workflows/src/test/kotlin/org/opendc/workflows/service/StageWorkflowSchedulerIntegrationTest.kt
+++ b/simulator/opendc-workflows/src/test/kotlin/org/opendc/workflows/service/StageWorkflowSchedulerIntegrationTest.kt
@@ -36,11 +36,12 @@ import org.junit.jupiter.api.Assertions.assertNotEquals
 import org.junit.jupiter.api.DisplayName
 import org.junit.jupiter.api.Test
 import org.junit.jupiter.api.assertAll
-import org.opendc.compute.core.metal.service.ProvisioningService
-import org.opendc.compute.simulator.SimVirtProvisioningService
-import org.opendc.compute.simulator.allocation.NumberOfActiveServersAllocationPolicy
+import org.opendc.compute.service.ComputeService
+import org.opendc.compute.service.scheduler.NumberOfActiveServersAllocationPolicy
+import org.opendc.compute.simulator.SimHostProvisioner
 import org.opendc.format.environment.sc18.Sc18EnvironmentReader
 import org.opendc.format.trace.gwf.GwfTraceReader
+import org.opendc.metal.service.ProvisioningService
 import org.opendc.simulator.compute.SimSpaceSharedHypervisorProvider
 import org.opendc.simulator.utils.DelayControllerClockAdapter
 import org.opendc.trace.core.EventTracer
@@ -80,7 +81,11 @@ internal class StageWorkflowSchedulerIntegrationTest {
             // Wait for the bare metal nodes to be spawned
             delay(10)
 
-            val provisioner = SimVirtProvisioningService(testScope, clock, bareMetal, NumberOfActiveServersAllocationPolicy(), tracer, SimSpaceSharedHypervisorProvider(), schedulingQuantum = 1000)
+            val provisioner = SimHostProvisioner(testScope.coroutineContext, bareMetal, SimSpaceSharedHypervisorProvider())
+            val hosts = provisioner.provisionAll()
+            val compute = ComputeService(testScope.coroutineContext, clock, tracer, NumberOfActiveServersAllocationPolicy(), schedulingQuantum = 1000)
+
+            hosts.forEach { compute.addHost(it) }
 
             // Wait for the hypervisors to be spawned
             delay(10)
@@ -89,7 +94,7 @@ internal class StageWorkflowSchedulerIntegrationTest {
                 testScope,
                 clock,
                 tracer,
-                provisioner,
+                compute.newClient(),
                 mode = WorkflowSchedulerMode.Batch(100),
                 jobAdmissionPolicy = NullJobAdmissionPolicy,
                 jobOrderPolicy = SubmissionTimeJobOrderPolicy(),
diff --git a/simulator/opendc-workflows/src/test/resources/log4j2.xml b/simulator/opendc-workflows/src/test/resources/log4j2.xml
new file mode 100644
index 00000000..70a0eacc
--- /dev/null
+++ b/simulator/opendc-workflows/src/test/resources/log4j2.xml
@@ -0,0 +1,35 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ Copyright (c) 2021 AtLarge Research
+  ~
+  ~ Permission is hereby granted, free of charge, to any person obtaining a copy
+  ~ of this software and associated documentation files (the "Software"), to deal
+  ~ in the Software without restriction, including without limitation the rights
+  ~ to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+  ~ copies of the Software, and to permit persons to whom the Software is
+  ~ furnished to do so, subject to the following conditions:
+  ~
+  ~ The above copyright notice and this permission notice shall be included in all
+  ~ copies or substantial portions of the Software.
+  ~
+  ~ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+  ~ IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+  ~ FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+  ~ AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+  ~ LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+  ~ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+  ~ SOFTWARE.
+  -->
+
+<Configuration status="WARN" packages="org.apache.logging.log4j.core">
+    <Appenders>
+        <Console name="Console" target="SYSTEM_OUT">
+            <PatternLayout pattern="%d{HH:mm:ss.SSS} [%highlight{%-5level}] %logger{36} - %msg%n" disableAnsi="false"/>
+        </Console>
+    </Appenders>
+    <Loggers>
+        <Root level="warn">
+            <AppenderRef ref="Console"/>
+        </Root>
+    </Loggers>
+</Configuration>