public CorrelationMiddleware(
IOptions <CorrelationOptions> correlationOptions,
ILogger <CorrelationMiddleware>?correlationLogger)
{
options = correlationOptions?.Value ?? throw new ArgumentNullException(nameof(correlationOptions));
logger = correlationLogger;
}
/// <summary>
/// Injects correlation middleware.
/// </summary>
/// <param name="services">The <see cref="IServiceCollection"/> to act on.</param>
/// <param name="options">Custom <see cref="CorrelationOptions"/>.</param>
/// <returns><paramref name="services"/> to allow chained calls.</returns>
/// <exception cref="ArgumentNullException"><paramref name="options"/> or <paramref name="services"/> is null.</exception>
public static IServiceCollection AddCorrelation(this IServiceCollection services, CorrelationOptions options)
{
if (options == null)
{
throw new ArgumentNullException(nameof(options));
}
services?.AddSingleton(Options.Create(options));
return(services?.AddSingleton <CorrelationMiddleware>() ?? throw new ArgumentNullException(nameof(services)));
}