in dotnet/dotnet-guestbook/src/backend/Startup.cs [20:42]
public void ConfigureServices(IServiceCollection services)
{
// GUESTBOOK_DB_ADDR environment variable is provided in guestbook-backend.deployment.yaml.
var databaseAddr = Environment.GetEnvironmentVariable("GUESTBOOK_DB_ADDR");
if (string.IsNullOrEmpty(databaseAddr))
{
throw new ArgumentException("GUESTBOOK_DB_ADDR environment variable is not set");
}
// PORT environment variable is provided in guestbook-backend.deployment.yaml.
var port = Environment.GetEnvironmentVariable("PORT");
if (string.IsNullOrEmpty(port))
{
throw new ArgumentException("PORT environment variable is not set");
}
services.AddControllers();
// Pass the configuration for connecting to MongoDB to Dependency Injection container
services.Configure<MongoConfig>(c => c.DatabaseAddress = $"mongodb://{databaseAddr}");
services.AddScoped<IMessageRepository, MessageRepository>();
}