rafaeldalsenter

worker_processes 4;

events { worker_connections 1024; }

http {    
        upstream container {
              least_conn;
              server container-app1;
              server container-app2;
              server container-app3;

rafaeldalsenter

sqlserver:
    image: mcr.microsoft.com/mssql/server
    container_name: container-sql
    ports:
        - "1433:1433"
    environment:
        SA_PASSWORD: "Docker12345"
        ACCEPT_EULA: "Y"
    networks: 
        - minha-rede

rafaeldalsenter

app1:
    image: docker-example-app
    container_name: container-app1
    ports:
        - "5000"
    networks: 
        - minha-rede
    depends_on:
        - "sqlserver"

rafaeldalsenter

nginx:
    build:
        dockerfile: ./docker/nginx.dockerfile
        context: .
    image: nginx
    container_name: container-lb
    ports:
        - "80:80"
    networks: 
        - minha-rede

rafaeldalsenter

public class Program
{
    public static IWebHostBuilder CreateWebHostBuilder(string[] args) =>
        WebHost.CreateDefaultBuilder(args)
            .ConfigureAppConfiguration(ic => ic.AddJsonFile("configuration.json"))
            .UseStartup<Startup>();

    public static void Main(string[] args)
    {
        CreateWebHostBuilder(args).Build().Run();

rafaeldalsenter

public class Startup
{
    private readonly IConfiguration _configuration;

    public Startup(IConfiguration configuration)
    {
        _configuration = configuration;
    }

    public void ConfigureServices(IServiceCollection services)

rafaeldalsenter

{
  "ReRoutes": [
    {
      "DownstreamPathTemplate": "/precodoproduto",
      "DownstreamScheme": "http",
      "DownstreamHostAndPorts": [
        {
          "Host": "container-ms-preco",
          "Port": 80
        }

rafaeldalsenter

{
  "ReRoutes": [ ... ],
  "Aggregates": [
    {
      "ReRouteKeys": [
        "validade",
        "preco"
      ],
      "UpstreamPathTemplate": "/produto"
    }

rafaeldalsenter

public class BlackListHandler : DelegatingHandler
{
    protected override Task<HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
    {
        return base.SendAsync(request, cancellationToken);
    }
}

rafaeldalsenter

public void ConfigureServices(IServiceCollection services)
{
    services
        .AddOcelot(_configuration)
        .AddDelegatingHandler<BlackListHandler>(true);
}