Added support for otel

SampleApi/Program.cs

@@ -1,12 +1,67 @@
+using OpenTelemetry.Exporter;
+using OpenTelemetry.Logs;
+using OpenTelemetry.Metrics;
+using OpenTelemetry.Resources;
+using OpenTelemetry.Trace;
+using System.Diagnostics.Metrics;
+
 var builder = WebApplication.CreateBuilder(args);
 
+// 1. Define Resource Information
+var resourceBuilder = ResourceBuilder.CreateDefault()
+    .AddService("SampleApi");
+
+// 2. Configuration Variables 
+var oltpApiKey = "mc3G63K2j5ZOEsi0AjMojLTXm1KEZFctzIIjSwDiTGut8qGSkPuWwxGP1RbscJUo";
+var oltpAddress = "http://aspire-dashboard-service.aspire.svc.cluster.local:18889";
+
 builder.Services.AddControllers();
 builder.Services.AddEndpointsApiExplorer();
 builder.Services.AddSwaggerGen();
 builder.Services.AddHealthChecks();
 
+// 3. Configure OpenTelemetry Logging
+builder.Logging.AddOpenTelemetry(logging =>
+{
+    logging.SetResourceBuilder(resourceBuilder);
+    logging.AddOtlpExporter(opt =>
+    {
+        opt.Endpoint = new Uri(oltpAddress);
+        opt.Protocol = OtlpExportProtocol.Grpc;
+        opt.Headers = $"x-otlp-api-key={oltpApiKey}";
+    });
+});
+
+// 4. Configure Tracing and Metrics (Merged into one registration)
+builder.Services.AddOpenTelemetry()
+    .WithTracing(tracing => tracing
+        .SetResourceBuilder(resourceBuilder)
+        .AddAspNetCoreInstrumentation()
+        .AddHttpClientInstrumentation()
+        .AddOtlpExporter(opt => 
+        {
+            opt.Endpoint = new Uri(oltpAddress);
+            opt.Protocol = OtlpExportProtocol.Grpc;
+            opt.Headers = $"x-otlp-api-key={oltpApiKey}";
+        }))
+    .WithMetrics(metrics => metrics
+        .SetResourceBuilder(resourceBuilder)
+        .AddMeter("SampleApi") // Register your custom meter here
+        .AddAspNetCoreInstrumentation()
+        .AddRuntimeInstrumentation()
+        .AddOtlpExporter(opt => 
+        {
+            opt.Endpoint = new Uri(oltpAddress);
+            opt.Protocol = OtlpExportProtocol.Grpc;
+            opt.Headers = $"x-otlp-api-key={oltpApiKey}";
+        }));
+
 var app = builder.Build();
 
+// 5. Initialize your Meter for use in the app
+var myMeter = new Meter("SampleApi", "1.0.0");
+var transactionCounter = myMeter.CreateCounter<long>("CustomCounter");
+
 if (app.Environment.IsDevelopment())
 {
     app.UseSwagger();
@@ -15,8 +70,7 @@ if (app.Environment.IsDevelopment())
 
 app.MapHealthChecks("/health");
 app.UseRouting();
-app.UseHttpsRedirection();
 app.UseAuthorization();
 app.MapControllers();
 
-app.Run();
+app.Run();