308 lines
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C#
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2022-12-18 20:22:51 +02:00
using Autofac;
using Coupon.API.Controllers;
using Coupon.API.Infrastructure;
using Coupon.API.Infrastructure.Filters;
using Coupon.API.Middlewares;
using Coupon.API.Services;
using Microsoft.AspNetCore.Authentication.JwtBearer;
using Microsoft.eShopOnContainers.BuildingBlocks.EventBus.Abstractions;
using Microsoft.eShopOnContainers.BuildingBlocks.EventBus;
using Microsoft.eShopOnContainers.BuildingBlocks.EventBusRabbitMQ;
using Microsoft.eShopOnContainers.BuildingBlocks.EventBusServiceBus;
using Microsoft.Extensions.Options;
using Microsoft.OpenApi.Models;
using RabbitMQ.Client;
using System.IdentityModel.Tokens.Jwt;
using Autofac.Extensions.DependencyInjection;
using Microsoft.AspNetCore.Diagnostics.HealthChecks;
using HealthChecks.UI.Client;
using Coupon.API.IntegrationEvents.EventHandling;
using Coupon.API.IntegrationEvents.Events;
namespace Coupon.API
{
public class Startup
{
public IConfiguration Configuration { get; }
public Startup(IConfiguration configuration)
{
Configuration = configuration;
}
// This method gets called by the runtime. Use this method to add services to the container.
public virtual IServiceProvider ConfigureServices(IServiceCollection services)
{
//services.AddGrpc(options =>
//{
// options.EnableDetailedErrors = true;
//});
RegisterAppInsights(services);
services.AddControllers(options =>
{
options.Filters.Add(typeof(HttpGlobalExceptionFilter));
//options.Filters.Add(typeof(ValidateModelStateFilter));
}) // Added for functional tests
.AddApplicationPart(typeof(CouponController).Assembly)
.AddJsonOptions(options => options.JsonSerializerOptions.WriteIndented = true);
services.AddSwaggerGen(options =>
{
options.SwaggerDoc("v1", new OpenApiInfo
{
Title = "eShopOnContainers - Coupon HTTP API",
Version = "v1",
Description = "The Coupon Service HTTP API"
});
options.AddSecurityDefinition("oauth2", new OpenApiSecurityScheme
{
Type = SecuritySchemeType.OAuth2,
Flows = new OpenApiOAuthFlows()
{
Implicit = new OpenApiOAuthFlow()
{
AuthorizationUrl = new Uri($"{Configuration.GetValue<string>("IdentityUrlExternal")}/connect/authorize"),
TokenUrl = new Uri($"{Configuration.GetValue<string>("IdentityUrlExternal")}/connect/token"),
Scopes = new Dictionary<string, string>()
{
{ "basket", "Basket API" }
}
}
}
});
options.OperationFilter<AuthorizeCheckOperationFilter>();
});
ConfigureAuthService(services);
services.AddCustomHealthCheck(Configuration);
services.Configure<CouponSettings>(Configuration);
//By connecting here we are making sure that our service
//cannot start until redis is ready. This might slow down startup,
//but given that there is a delay on resolving the ip address
//and then creating the connection it seems reasonable to move
//that cost to startup instead of having the first request pay the
//penalty.
//services.AddSingleton<ConnectionMultiplexer>(sp =>
//{
// var settings = sp.GetRequiredService<IOptions<CouponSettings>>().Value;
// var configuration = ConfigurationOptions.Parse(settings.ConnectionString, true);
// return ConnectionMultiplexer.Connect(configuration);
//});
if (Configuration.GetValue<bool>("AzureServiceBusEnabled"))
{
services.AddSingleton<IServiceBusPersisterConnection>(sp =>
{
var serviceBusConnectionString = Configuration["EventBusConnection"];
return new DefaultServiceBusPersisterConnection(serviceBusConnectionString);
});
}
else
{
services.AddSingleton<IRabbitMQPersistentConnection>(sp =>
{
var logger = sp.GetRequiredService<ILogger<DefaultRabbitMQPersistentConnection>>();
var factory = new ConnectionFactory()
{
HostName = Configuration["EventBusConnection"],
DispatchConsumersAsync = true
};
if (!string.IsNullOrEmpty(Configuration["EventBusUserName"]))
{
factory.UserName = Configuration["EventBusUserName"];
}
if (!string.IsNullOrEmpty(Configuration["EventBusPassword"]))
{
factory.Password = Configuration["EventBusPassword"];
}
var retryCount = 5;
if (!string.IsNullOrEmpty(Configuration["EventBusRetryCount"]))
{
retryCount = int.Parse(Configuration["EventBusRetryCount"]);
}
return new DefaultRabbitMQPersistentConnection(factory, logger, retryCount);
});
}
RegisterEventBus(services);
services.AddCors(options =>
{
options.AddPolicy("CorsPolicy",
builder => builder
.SetIsOriginAllowed((host) => true)
.AllowAnyMethod()
.AllowAnyHeader()
.AllowCredentials());
});
services.AddSingleton<IHttpContextAccessor, HttpContextAccessor>();
services.AddTransient<ICouponRepository, CouponRepository>();
services.AddTransient<IIdentityService, IdentityService>();
services.AddOptions();
var container = new ContainerBuilder();
container.Populate(services);
return new AutofacServiceProvider(container.Build());
}
private void RegisterAppInsights(IServiceCollection services)
{
services.AddApplicationInsightsTelemetry(Configuration);
services.AddApplicationInsightsKubernetesEnricher();
}
private void ConfigureAuthService(IServiceCollection services)
{
// prevent from mapping "sub" claim to nameidentifier.
JwtSecurityTokenHandler.DefaultInboundClaimTypeMap.Remove("sub");
var identityUrl = Configuration.GetValue<string>("IdentityUrl");
services.AddAuthentication(options =>
{
options.DefaultAuthenticateScheme = JwtBearerDefaults.AuthenticationScheme;
options.DefaultChallengeScheme = JwtBearerDefaults.AuthenticationScheme;
}).AddJwtBearer(options =>
{
options.Authority = identityUrl;
options.RequireHttpsMetadata = false;
options.Audience = "basket";
});
}
private void RegisterEventBus(IServiceCollection services)
{
if (Configuration.GetValue<bool>("AzureServiceBusEnabled"))
{
services.AddSingleton<IEventBus, EventBusServiceBus>(sp =>
{
var serviceBusPersisterConnection = sp.GetRequiredService<IServiceBusPersisterConnection>();
var iLifetimeScope = sp.GetRequiredService<ILifetimeScope>();
var logger = sp.GetRequiredService<ILogger<EventBusServiceBus>>();
var eventBusSubscriptionsManager = sp.GetRequiredService<IEventBusSubscriptionsManager>();
string subscriptionName = Configuration["SubscriptionClientName"];
return new EventBusServiceBus(serviceBusPersisterConnection, logger,
eventBusSubscriptionsManager, iLifetimeScope, subscriptionName);
});
}
else
{
services.AddSingleton<IEventBus, EventBusRabbitMQ>(sp =>
{
var subscriptionClientName = Configuration["SubscriptionClientName"];
var rabbitMQPersistentConnection = sp.GetRequiredService<IRabbitMQPersistentConnection>();
var iLifetimeScope = sp.GetRequiredService<ILifetimeScope>();
var logger = sp.GetRequiredService<ILogger<EventBusRabbitMQ>>();
var eventBusSubscriptionsManager = sp.GetRequiredService<IEventBusSubscriptionsManager>();
var retryCount = 5;
if (!string.IsNullOrEmpty(Configuration["EventBusRetryCount"]))
{
retryCount = int.Parse(Configuration["EventBusRetryCount"]);
}
return new EventBusRabbitMQ(rabbitMQPersistentConnection, logger, iLifetimeScope, eventBusSubscriptionsManager, subscriptionClientName, retryCount);
});
}
services.AddSingleton<IEventBusSubscriptionsManager, InMemoryEventBusSubscriptionsManager>();
//services.AddTransient<ProductPriceChangedIntegrationEventHandler>();
services.AddTransient<OrderStatusChangedToAwaitingCouponValidationIntegrationEventHandler>();
}
public void Configure(IApplicationBuilder app, IWebHostEnvironment env, ILoggerFactory loggerFactory)
{
//loggerFactory.AddAzureWebAppDiagnostics();
//loggerFactory.AddApplicationInsights(app.ApplicationServices, LogLevel.Trace);
var pathBase = Configuration["PATH_BASE"];
if (!string.IsNullOrEmpty(pathBase))
{
app.UsePathBase(pathBase);
}
app.UseSwagger()
.UseSwaggerUI(setup =>
{
setup.SwaggerEndpoint($"{(!string.IsNullOrEmpty(pathBase) ? pathBase : string.Empty)}/swagger/v1/swagger.json", "1Basket.API V1");
setup.OAuthClientId("basketswaggerui");
setup.OAuthAppName("Basket Swagger UI");
});
app.UseRouting();
app.UseCors("CorsPolicy");
ConfigureAuth(app);
app.UseStaticFiles();
app.UseEndpoints(endpoints =>
{
//endpoints.MapGrpcService<BasketService>();
endpoints.MapDefaultControllerRoute();
endpoints.MapControllers();
//endpoints.MapGet("/_proto/", async ctx =>
//{
// ctx.Response.ContentType = "text/plain";
// using var fs = new FileStream(Path.Combine(env.ContentRootPath, "Proto", "basket.proto"), FileMode.Open, FileAccess.Read);
// using var sr = new StreamReader(fs);
// while (!sr.EndOfStream)
// {
// var line = await sr.ReadLineAsync();
// if (line != "/* >>" || line != "<< */")
// {
// await ctx.Response.WriteAsync(line);
// }
// }
//});
endpoints.MapHealthChecks("/hc", new HealthCheckOptions()
{
Predicate = _ => true,
ResponseWriter = UIResponseWriter.WriteHealthCheckUIResponse
});
endpoints.MapHealthChecks("/liveness", new HealthCheckOptions
{
Predicate = r => r.Name.Contains("self")
});
});
ConfigureEventBus(app);
}
protected virtual void ConfigureAuth(IApplicationBuilder app)
{
app.UseAuthentication();
app.UseAuthorization();
}
private void ConfigureEventBus(IApplicationBuilder app)
{
var eventBus = app.ApplicationServices.GetRequiredService<IEventBus>();
//eventBus.Subscribe<ProductPriceChangedIntegrationEvent, ProductPriceChangedIntegrationEventHandler>();
eventBus.Subscribe<OrderStatusChangedToAwaitingCouponValidationIntegrationEvent, OrderStatusChangedToAwaitingCouponValidationIntegrationEventHandler>();
}
}
}