65 lines
2.3 KiB
C#
65 lines
2.3 KiB
C#
using System;
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using System.Net.Http;
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using System.Threading;
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using System.Threading.Tasks;
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using Microsoft.AspNetCore.Builder;
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using Microsoft.AspNetCore.Http;
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using Microsoft.EntityFrameworkCore;
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using Microsoft.Extensions.Configuration;
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using Microsoft.Extensions.DependencyInjection;
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using Polly.Simmy;
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using service;
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var builder = WebApplication.CreateBuilder(args);
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// Add services to the container.
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var services = builder.Services;
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services.AddRequestTimeouts();
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// Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle
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services.AddEndpointsApiExplorer();
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services.AddSwaggerGen();
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services.AddDbContext<AppDbContext>(optionsBuilder =>
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{
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// Configure the database connection string.
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var connectionString = builder.Configuration.GetValue<string>("PostgresConnection");
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Console.WriteLine($"Connecting to PostgreSQL database with connection string: {connectionString}");
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optionsBuilder.UseNpgsql(connectionString);
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});
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var httpClientBuilder = services.AddHttpClient<JsonPlaceholderClient>();
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#region Exercise Phase 4
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httpClientBuilder.AddResilienceHandler("chaos", configure =>
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{
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// Simulate network chaos by adding latency and random errors.
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configure
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.AddChaosLatency(0.10, TimeSpan.FromSeconds(3))
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.AddChaosOutcome(0.15, () => new HttpResponseMessage(System.Net.HttpStatusCode.BadGateway))
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.AddChaosOutcome(0.20, () => new HttpResponseMessage(System.Net.HttpStatusCode.ServiceUnavailable))
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.AddChaosOutcome(0.10, () =>
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{
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Thread.Sleep(TimeSpan.FromSeconds(2)); // Delay the error response, as it would likely happen with a 504.
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return new HttpResponseMessage(System.Net.HttpStatusCode.GatewayTimeout);
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});
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});
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#endregion
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var app = builder.Build();
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app.UseSwagger();
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app.UseSwaggerUI(); // Swagger UI is available at http://localhost:8080/swagger/index.html
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app.UseRequestTimeouts();
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app.MapGet("/posts/{id}", async (AppDbContext dbContext, JsonPlaceholderClient client, int id) =>
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{
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// TODO: (Phase 1) Implement the logic to retrieve a post by ID and store it in the database.
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// Consider some minimal error handling in case the post is not found (e.g. Id > 100).
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return Results.Ok();
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})
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.WithRequestTimeout(TimeSpan.FromSeconds(29))
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.WithName("GetPostById")
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.WithOpenApi();
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app.Run();
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