merge: Standardize simulator metrics

This pull request standardizes the metrics emitted by the simulator based on OpenTelemetry conventions. 
From now on, all metrics exposed by the simulator are exported through OpenTelemetry 
following the recommended practices for naming, collection, etc.

**Implementation Notes**

- Improve ParquetDataWriter implementation 
- Simplify CoroutineMetricReader
- Create separate MeterProvider per service/host
- Standardize compute scheduler metrics 
- Standardize SimHost metrics 
- Use logical types for Parquet output columns 

**External Dependencies**

- Update to OpenTelemetry 1.6.0

**Breaking API Changes**

- Instead of supplying a `Meter` instances, key classes are now responsible for constructing 
   a `Meter` instance from the supplied `MeterProvider`.
- Export format has been changed to suit the outputted metrics
- Energy experiments shell has been removed

1 files changed, 3 insertions, 3 deletions

diff --git a/opendc-faas/opendc-faas-simulator/src/test/kotlin/org/opendc/faas/simulator/SimFaaSServiceTest.kt b/opendc-faas/opendc-faas-simulator/src/test/kotlin/org/opendc/faas/simulator/SimFaaSServiceTest.kt
index 64f2551b..0dc9ba87 100644
--- a/opendc-faas/opendc-faas-simulator/src/test/kotlin/org/opendc/faas/simulator/SimFaaSServiceTest.kt
+++ b/opendc-faas/opendc-faas-simulator/src/test/kotlin/org/opendc/faas/simulator/SimFaaSServiceTest.kt
@@ -43,6 +43,7 @@ import org.opendc.simulator.compute.model.ProcessingUnit
 import org.opendc.simulator.compute.workload.SimFlopsWorkload
 import org.opendc.simulator.compute.workload.SimWorkload
 import org.opendc.simulator.core.runBlockingSimulation
+import java.time.Duration
 
 /**
  * A test suite for the [FaaSService] implementation under simulated conditions.
@@ -64,14 +65,13 @@ internal class SimFaaSServiceTest {
 
     @Test
     fun testSmoke() = runBlockingSimulation {
-        val meter = MeterProvider.noop().get("opendc-faas")
         val workload = spyk(object : SimFaaSWorkload, SimWorkload by SimFlopsWorkload(1000) {
             override suspend fun invoke() {}
         })
         val deployer = SimFunctionDeployer(clock, this, machineModel, ZeroDelayInjector) { workload }
         val service = FaaSService(
-            coroutineContext, clock, meter, deployer, RandomRoutingPolicy(),
-            FunctionTerminationPolicyFixed(coroutineContext, clock, timeout = 10000)
+            coroutineContext, clock, MeterProvider.noop(), deployer, RandomRoutingPolicy(),
+            FunctionTerminationPolicyFixed(coroutineContext, clock, timeout = Duration.ofMillis(10000))
         )
 
         val client = service.newClient()