using Autofac;
using Autofac.Extensions.DependencyInjection;
using Catalog.API.Grpc;
using global::Catalog.API.Infrastructure.Filters;
using global::Catalog.API.IntegrationEvents;
using HealthChecks.UI.Client;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Diagnostics.HealthChecks;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Azure.ServiceBus;
using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Diagnostics;
using Microsoft.eShopOnContainers.BuildingBlocks.EventBus;
using Microsoft.eShopOnContainers.BuildingBlocks.EventBus.Abstractions;
using Microsoft.eShopOnContainers.BuildingBlocks.EventBusRabbitMQ;
using Microsoft.eShopOnContainers.BuildingBlocks.EventBusServiceBus;
using Microsoft.eShopOnContainers.BuildingBlocks.IntegrationEventLogEF;
using Microsoft.eShopOnContainers.BuildingBlocks.IntegrationEventLogEF.Services;
using Microsoft.eShopOnContainers.Services.Catalog.API.Infrastructure;
using Microsoft.eShopOnContainers.Services.Catalog.API.IntegrationEvents.EventHandling;
using Microsoft.eShopOnContainers.Services.Catalog.API.IntegrationEvents.Events;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Diagnostics.HealthChecks;
using Microsoft.Extensions.Logging;
using Microsoft.Extensions.Options;
using RabbitMQ.Client;
using System;
using System.Data.Common;
using System.IO;
using System.Reflection;
namespace Microsoft.eShopOnContainers.Services.Catalog.API
{
public class Startup
{
public Startup(IConfiguration configuration)
{
Configuration = configuration;
}
public IConfiguration Configuration { get; }
public void ConfigureServices(IServiceCollection services)
{
services.AddAppInsight(Configuration)
.AddGrpc().Services
.AddCustomMVC(Configuration)
.AddCustomDbContext(Configuration)
.AddCustomOptions(Configuration)
.AddIntegrationServices(Configuration)
.AddEventBus(Configuration)
.AddSwagger()
.AddCustomHealthCheck(Configuration);
services.AddControllers();
var container = new ContainerBuilder();
container.Populate(services);
}
public void Configure(IApplicationBuilder app, IWebHostEnvironment env, ILoggerFactory loggerFactory)
{
//Configure logs
//loggerFactory.AddAzureWebAppDiagnostics();
//loggerFactory.AddApplicationInsights(app.ApplicationServices, LogLevel.Trace);
var pathBase = Configuration["PATH_BASE"];
if (!string.IsNullOrEmpty(pathBase))
{
loggerFactory.CreateLogger<Startup>().LogDebug("Using PATH BASE '{pathBase}'", pathBase);
app.UsePathBase(pathBase);
}
app.UseCors("CorsPolicy");
app.UseRouting();
app.UseEndpoints(endpoints =>
{
endpoints.MapDefaultControllerRoute();
endpoints.MapGet("/_proto/", async ctx =>
{
ctx.Response.ContentType = "text/plain";
using var fs = new FileStream(Path.Combine(env.ContentRootPath, "Proto", "catalog.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.MapGrpcService<CatalogService>();
endpoints.MapHealthChecks("/hc", new HealthCheckOptions()
{
Predicate = _ => true,
ResponseWriter = UIResponseWriter.WriteHealthCheckUIResponse
});
endpoints.MapHealthChecks("/liveness", new HealthCheckOptions
{
Predicate = r => r.Name.Contains("self")
});
});
app.UseSwagger()
.UseSwaggerUI(c =>
{
c.SwaggerEndpoint($"{ (!string.IsNullOrEmpty(pathBase) ? pathBase : string.Empty) }/swagger/v1/swagger.json", "Catalog.API V1");
});
ConfigureEventBus(app);
}
protected virtual void ConfigureEventBus(IApplicationBuilder app)
{
var eventBus = app.ApplicationServices.GetRequiredService<IEventBus>();
eventBus.Subscribe<OrderStatusChangedToAwaitingValidationIntegrationEvent, OrderStatusChangedToAwaitingValidationIntegrationEventHandler>();
eventBus.Subscribe<OrderStatusChangedToPaidIntegrationEvent, OrderStatusChangedToPaidIntegrationEventHandler>();
}
}
public static class CustomExtensionMethods
{
public static IServiceCollection AddAppInsight(this IServiceCollection services, IConfiguration configuration)
{
services.AddApplicationInsightsTelemetry(configuration);
services.AddApplicationInsightsKubernetesEnricher();
return services;
}
public static IServiceCollection AddCustomMVC(this IServiceCollection services, IConfiguration configuration)
{
services.AddMvc(options =>
{
options.Filters.Add(typeof(HttpGlobalExceptionFilter));
})
.SetCompatibilityVersion(CompatibilityVersion.Version_3_0)
.AddControllersAsServices();
services.AddCors(options =>
{
options.AddPolicy("CorsPolicy",
builder => builder
.SetIsOriginAllowed((host) => true)
.AllowAnyMethod()
.AllowAnyHeader()
.AllowCredentials());
});
return services;
}
public static IServiceCollection AddCustomHealthCheck(this IServiceCollection services, IConfiguration configuration)
{
var accountName = configuration.GetValue<string>("AzureStorageAccountName");
var accountKey = configuration.GetValue<string>("AzureStorageAccountKey");
var hcBuilder = services.AddHealthChecks();
hcBuilder
.AddCheck("self", () => HealthCheckResult.Healthy())
.AddSqlServer(
configuration["ConnectionString"],
name: "CatalogDB-check",
tags: new string[] { "catalogdb" });
if (!string.IsNullOrEmpty(accountName) && !string.IsNullOrEmpty(accountKey))
{
hcBuilder
.AddAzureBlobStorage(
$"DefaultEndpointsProtocol=https;AccountName={accountName};AccountKey={accountKey};EndpointSuffix=core.windows.net",
name: "catalog-storage-check",
tags: new string[] { "catalogstorage" });
}
if (configuration.GetValue<bool>("AzureServiceBusEnabled"))
{
hcBuilder
.AddAzureServiceBusTopic(
configuration["EventBusConnection"],
topicName: "eshop_event_bus",
name: "catalog-servicebus-check",
tags: new string[] { "servicebus" });
}
else
{
hcBuilder
.AddRabbitMQ(
$"amqp://{configuration["EventBusConnection"]}",
name: "catalog-rabbitmqbus-check",
tags: new string[] { "rabbitmqbus" });
}
return services;
}
public static IServiceCollection AddCustomDbContext(this IServiceCollection services, IConfiguration configuration)
{
services.AddEntityFrameworkSqlServer()
.AddDbContext<CatalogContext>(options =>
{
options.UseSqlServer(configuration["ConnectionString"],
sqlServerOptionsAction: sqlOptions =>
{
sqlOptions.MigrationsAssembly(typeof(Startup).GetTypeInfo().Assembly.GetName().Name);
//Configuring Connection Resiliency: https://docs.microsoft.com/en-us/ef/core/miscellaneous/connection-resiliency
sqlOptions.EnableRetryOnFailure(maxRetryCount: 15, maxRetryDelay: TimeSpan.FromSeconds(30), errorNumbersToAdd: null);
});
// Changing default behavior when client evaluation occurs to throw.
// Default in EF Core would be to log a warning when client evaluation is performed.
options.ConfigureWarnings(warnings => warnings.Throw(RelationalEventId.QueryClientEvaluationWarning));
//Check Client vs. Server evaluation: https://docs.microsoft.com/en-us/ef/core/querying/client-eval
});
services.AddDbContext<IntegrationEventLogContext>(options =>
{
options.UseSqlServer(configuration["ConnectionString"],
sqlServerOptionsAction: sqlOptions =>
{
sqlOptions.MigrationsAssembly(typeof(Startup).GetTypeInfo().Assembly.GetName().Name);
//Configuring Connection Resiliency: https://docs.microsoft.com/en-us/ef/core/miscellaneous/connection-resiliency
sqlOptions.EnableRetryOnFailure(maxRetryCount: 15, maxRetryDelay: TimeSpan.FromSeconds(30), errorNumbersToAdd: null);
});
});
return services;
}
public static IServiceCollection AddCustomOptions(this IServiceCollection services, IConfiguration configuration)
{
services.Configure<CatalogSettings>(configuration);
services.Configure<ApiBehaviorOptions>(options =>
{
options.InvalidModelStateResponseFactory = context =>
{
var problemDetails = new ValidationProblemDetails(context.ModelState)
{
Instance = context.HttpContext.Request.Path,
Status = StatusCodes.Status400BadRequest,
Detail = "Please refer to the errors property for additional details."
};
return new BadRequestObjectResult(problemDetails)
{
ContentTypes = { "application/problem+json", "application/problem+xml" }
};
};
});
return services;
}
public static IServiceCollection AddSwagger(this IServiceCollection services)
{
services.AddSwaggerGen(options =>
{
options.DescribeAllEnumsAsStrings();
options.SwaggerDoc("v1", new OpenApi.Models.OpenApiInfo
{
Title = "eShopOnContainers - Catalog HTTP API",
Version = "v1",
Description = "The Catalog Microservice HTTP API. This is a Data-Driven/CRUD microservice sample"
});
});
return services;
}
public static IServiceCollection AddIntegrationServices(this IServiceCollection services, IConfiguration configuration)
{
services.AddTransient<Func<DbConnection, IIntegrationEventLogService>>(
sp => (DbConnection c) => new IntegrationEventLogService(c));
services.AddTransient<ICatalogIntegrationEventService, CatalogIntegrationEventService>();
if (configuration.GetValue<bool>("AzureServiceBusEnabled"))
{
services.AddSingleton<IServiceBusPersisterConnection>(sp =>
{
var settings = sp.GetRequiredService<IOptions<CatalogSettings>>().Value;
var logger = sp.GetRequiredService<ILogger<DefaultServiceBusPersisterConnection>>();
var serviceBusConnection = new ServiceBusConnectionStringBuilder(settings.EventBusConnection);
return new DefaultServiceBusPersisterConnection(serviceBusConnection, logger);
});
}
else
{
services.AddSingleton<IRabbitMQPersistentConnection>(sp =>
{
var settings = sp.GetRequiredService<IOptions<CatalogSettings>>().Value;
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);
});
}
return services;
}
public static IServiceCollection AddEventBus(this IServiceCollection services, IConfiguration configuration)
{
var subscriptionClientName = configuration["SubscriptionClientName"];
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 eventBusSubcriptionsManager = sp.GetRequiredService<IEventBusSubscriptionsManager>();
return new EventBusServiceBus(serviceBusPersisterConnection, logger,
eventBusSubcriptionsManager, subscriptionClientName, iLifetimeScope);
});
}
else
{
services.AddSingleton<IEventBus, EventBusRabbitMQ>(sp =>
{
var rabbitMQPersistentConnection = sp.GetRequiredService<IRabbitMQPersistentConnection>();
var iLifetimeScope = sp.GetRequiredService<ILifetimeScope>();
var logger = sp.GetRequiredService<ILogger<EventBusRabbitMQ>>();
var eventBusSubcriptionsManager = sp.GetRequiredService<IEventBusSubscriptionsManager>();
var retryCount = 5;
if (!string.IsNullOrEmpty(configuration["EventBusRetryCount"]))
{
retryCount = int.Parse(configuration["EventBusRetryCount"]);
}
return new EventBusRabbitMQ(rabbitMQPersistentConnection, logger, iLifetimeScope, eventBusSubcriptionsManager, subscriptionClientName, retryCount);
});
}
services.AddSingleton<IEventBusSubscriptionsManager, InMemoryEventBusSubscriptionsManager>();
services.AddTransient<OrderStatusChangedToAwaitingValidationIntegrationEventHandler>();
services.AddTransient<OrderStatusChangedToPaidIntegrationEventHandler>();
return services;
}
}
}