public static T WithElasticDefaults()

in src/Elastic.OpenTelemetry.Core/SignalBuilder.cs [102:159]
41 lines of code
4 McCabe index (conditional complexity)

	public static T WithElasticDefaults<T>(
		T builder,
		CompositeElasticOpenTelemetryOptions? options,
		ElasticOpenTelemetryComponents? components,
		IServiceCollection? services,
		Action<T, BuilderState, IServiceCollection?> configure) where T : class
	{
		var providerBuilderName = builder.GetType().Name;
		var logger = GetLogger(components, options);

		try
		{
			if (BuilderStateTable.TryGetValue(builder, out var builderState))
			{
				builderState.Components.Logger.LogBuilderAlreadyConfigured(providerBuilderName, builderState.InstanceIdentifier);

				// This allows us to track the number of times a specific instance of a builder is configured.
				// We expect each builder to be configured at most once and log a warning if multiple invocations
				// are detected.
				builderState.IncrementWithElasticDefaults();

				if (builderState.WithElasticDefaultsCounter > 1)
					builderState.Components.Logger.LogWarning("The `WithElasticDefaults` method has been called {WithElasticDefaultsCount} " +
						"times on the same `{BuilderType}` (instance: {BuilderInstanceId}). This method is " +
						"expected to be invoked a maximum of one time.", builderState.WithElasticDefaultsCounter, providerBuilderName,
						builderState.InstanceIdentifier);

				return builder;
			}

			// This should not be a hot path, so locking here is reasonable.
			using (var scope = Lock.EnterScope())
			{
				var instanceId = Guid.NewGuid().ToString(); // Used in logging to track duplicate calls to the same builder

				// We can't log to the file here as we don't yet have any bootstrapped components.
				// Therefore, this message will only appear if the consumer provides an additional logger.
				// This is fine as it's a trace level message for advanced debugging.
				logger.LogNoExistingComponents(providerBuilderName, instanceId);

				options ??= CompositeElasticOpenTelemetryOptions.DefaultOptions;
				components = ElasticOpenTelemetry.Bootstrap(options, services);
				builderState = new BuilderState(components, instanceId);

				configure(builder, builderState, services);

				components.Logger.LogStoringBuilderState(providerBuilderName, instanceId);
				BuilderStateTable.Add(builder, builderState);
			}
		}
		catch (Exception ex)
		{
			logger.LogError(new EventId(502, "BuilderDefaultsFailed"), ex, "Failed to fully register EDOT .NET " +
				"defaults on the {ProviderBuilderName}.", builder.GetType().Name);
		}

		return builder;
	}