Use EDOT sdk

[reakaleek]

No description provided.

[cotti]

This creates a new OTLP Exporter, breaking integration testing (and I'd assume live).

The reason it creates a new one is that an implicit default ElasticOpenTelemetryOptions has its SkipOtlpExporter set to false. Also, this starts a new OpenTelemetry service which is already defined in the beginning of ConfigureOpenTelemetry, is this wanted?

[cotti]

Suggestion for ConfigureOpenTelemetry (passes integration):

	public static TBuilder ConfigureOpenTelemetry<TBuilder>(this TBuilder builder) where TBuilder : IHostApplicationBuilder
	{
		_ = builder.Logging.AddOpenTelemetry(logging =>
		{
			logging.IncludeFormattedMessage = true;
			logging.IncludeScopes = true;
		});

		var skipOtlpExporter = string.IsNullOrWhiteSpace(builder.Configuration["OTEL_EXPORTER_OTLP_ENDPOINT"]);

		_ = builder.Services.AddElasticOpenTelemetry(new ElasticOpenTelemetryOptions { SkipOtlpExporter = skipOtlpExporter })
			.WithMetrics(metrics =>
			{
				_ = metrics.AddAspNetCoreInstrumentation()
					.AddHttpClientInstrumentation()
					.AddRuntimeInstrumentation()
					.AddMeter(TelemetryConstants.AssemblerSyncInstrumentationName);
			})
			.WithTracing(tracing =>
			{
				_ = tracing.AddSource(builder.Environment.ApplicationName)
					.AddSource(TelemetryConstants.AssemblerSyncInstrumentationName)
					.AddAspNetCoreInstrumentation(instrumentation =>
						// Exclude health check requests from tracing
						instrumentation.Filter = context =>
							!context.Request.Path.StartsWithSegments(HealthEndpointPath)
							&& !context.Request.Path.StartsWithSegments(AlivenessEndpointPath)
					)
					// Uncomment the following line to enable gRPC instrumentation (requires the OpenTelemetry.Instrumentation.GrpcNetClient package)
					//.AddGrpcClientInstrumentation()
					.AddHttpClientInstrumentation();
			});

		if (!skipOtlpExporter)
		{
			// Configure delta temporality for Elasticsearch compatibility
			// See: https://www.elastic.co/docs/reference/opentelemetry/compatibility/limitations#histograms-in-delta-temporality-only
			_ = builder.Services.Configure<MetricReaderOptions>(options =>
			{
				options.TemporalityPreference = MetricReaderTemporalityPreference.Delta;
			});
		}
		return builder;
	}