Program.cs

using Common;
using DataServices.Client;
using HealthChecks.Extensions;
using Microsoft.Azure.Functions.Worker.Builder;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using Model;
using NHS.CohortManager.ServiceNowIntegrationService;

var host = new HostBuilder()
    .AddConfiguration(out ServiceNowMessageHandlerConfig config)
    .AddDataServicesHandler()
        .AddDataService<ServicenowCase>(config.ServiceNowCasesDataServiceURL)
        .Build()
    .ConfigureFunctionsWebApplication()
    .ConfigureServices(services =>
    {
        services.AddSingleton<ICreateResponse, CreateResponse>();
        services.AddTransient<IServiceNowClient, ServiceNowClient>();
        services.AddMemoryCache();
        services.AddHttpClient();
        // Register health checks
        services.AddBasicHealthCheck("ServiceNowMessageHandler");
    })
    .AddAuditLogging(config.ServiceBusConnectionString_client_internal)
    .AddTelemetry()
    .AddServiceBusClient(config.ServiceBusConnectionString_client_internal)
    .Build();

await host.RunAsync();