Add support for instrumentation scope attributes (Meter tags)

examples/Console/TestOtlpExporter.cs

@@ -33,10 +33,10 @@ internal static object Run(string endpoint, string protocol)
          * launch the OpenTelemetry Collector with an OTLP receiver, by running:
          *
          *  - On Unix based systems use:
-         *     docker run --rm -it -p 4317:4317 -p 4318:4318 -v $(pwd):/cfg otel/opentelemetry-collector:0.48.0 --config=/cfg/otlp-collector-example/config.yaml
+         *     docker run --rm -it -p 4317:4317 -p 4318:4318 -v $(pwd):/cfg otel/opentelemetry-collector:latest --config=/cfg/otlp-collector-example/config.yaml
          *
          *  - On Windows use:
-         *     docker run --rm -it -p 4317:4317 -p 4318:4318 -v "%cd%":/cfg otel/opentelemetry-collector:0.48.0 --config=/cfg/otlp-collector-example/config.yaml
+         *     docker run --rm -it -p 4317:4317 -p 4318:4318 -v "%cd%":/cfg otel/opentelemetry-collector:latest --config=/cfg/otlp-collector-example/config.yaml
          *
          * Open another terminal window at the examples/Console/ directory and
          * launch the OTLP example by running:

src/OpenTelemetry.Exporter.Console/ConsoleMetricExporter.cs

@@ -50,8 +50,8 @@ public override ExportResult Export(in Batch<Metric> batch)
 
         foreach (var metric in batch)
         {
-            var msg = new StringBuilder($"\nExport ");
-            msg.Append(metric.Name);
+            var msg = new StringBuilder($"\n");
+            msg.Append($"Metric Name: {metric.Name}");
             if (metric.Description != string.Empty)
             {
                 msg.Append(", ");
@@ -75,6 +75,15 @@ public override ExportResult Export(in Batch<Metric> batch)
 
             this.WriteLine(msg.ToString());
 
+            foreach (var meterTag in metric.MeterTags)
+            {
+                this.WriteLine("\tMeter Tags:");
+                if (ConsoleTagTransformer.Instance.TryTransformTag(meterTag, out var result))
+                {
+                    this.WriteLine($"\t    {result}");
+                }
+            }
+
             foreach (ref readonly var metricPoint in metric.GetMetricPoints())
             {
                 string valueDisplay = string.Empty;

src/OpenTelemetry.Exporter.OpenTelemetryProtocol/CHANGELOG.md

@@ -15,6 +15,9 @@
   accepts a `name` parameter to support named options.
   ([#4916](https://github.com/open-telemetry/opentelemetry-dotnet/pull/4916))
 
+* Add support for Instrumentation Scope Attributes (i.e Meter Tags), fixing
+  issue [#4563](https://github.com/open-telemetry/opentelemetry-dotnet/issues/4563).
+
 ## 1.7.0-alpha.1
 
 Released 2023-Oct-16