merge: Expose metrics directly to user (#80)

This pull request adds the ability to access the metrics of resources modeled
by the OpenDC Compute, Workflow, FaaS, and TensorFlow services directly from
their corresponding interfaces. Previously, users would have to interact with
OpenTelemetry to obtain these values, which is complex and provides
significant overhead.

With this pull request, users can access the metrics of all cloud resources
modeled by OpenDC via methods such as `getSchedulerStats()`, etc.

** Breaking Changes **

- `ComputeService.hostCount` removed in favour of `ComputeService.hosts.size`

1 files changed, 0 insertions, 1 deletions

diff --git a/opendc-telemetry/opendc-telemetry-sdk/src/main/kotlin/org/opendc/telemetry/sdk/metrics/export/CoroutineMetricReader.kt b/opendc-telemetry/opendc-telemetry-sdk/src/main/kotlin/org/opendc/telemetry/sdk/metrics/export/CoroutineMetricReader.kt
index a9290c47..ca5da079 100644
--- a/opendc-telemetry/opendc-telemetry-sdk/src/main/kotlin/org/opendc/telemetry/sdk/metrics/export/CoroutineMetricReader.kt
+++ b/opendc-telemetry/opendc-telemetry-sdk/src/main/kotlin/org/opendc/telemetry/sdk/metrics/export/CoroutineMetricReader.kt
@@ -31,7 +31,6 @@ import io.opentelemetry.sdk.metrics.export.MetricReaderFactory
 import kotlinx.coroutines.*
 import mu.KotlinLogging
 import java.time.Duration
-import java.util.*
 
 /**
  * A helper class to read the metrics from a list of [MetricProducer]s and automatically export the metrics every