ASP - Core Migrate EF Core SQL DB on Startup

Question

Is it possible to have my ASP Core Web API ensure the DB is migrated to the latest migration using EF Core? I know this can be done through the command line, but I want to

Answer 1

I followed the IStartupFilter approach to have a generic way for migrating any context.

 public class DataContextAutomaticMigrationStartupFilter : IStartupFilter
  where T : DbContext
{
    /// 
    public Action Configure(Action next)
    {
        return app =>
        {
            using (var scope = app.ApplicationServices.CreateScope())
            {
                scope.ServiceProvider.GetRequiredService().Database.SetCommandTimeout(160);
                scope.ServiceProvider.GetRequiredService().Database.Migrate();
            }
            next(app);
        };
    }
}

Now we're able to register the DataContexts and migration in the following way:

1st context

 services.AddDbContext(options => options.UseSqlServer(configuration.GetConnectionString("ConsumerConnection")), ServiceLifetime.Transient);
    services.AddTransient>();

2nd context

services.AddDbContext(options => options.UseSqlServer(configuration.GetConnectionString("UserConnection")), ServiceLifetime.Transient);
services.AddTransient>();

..and so on..

The culprit of IStartupFilter is that it only allows synchronous execution of code. For database migrations this is not an issue since we have a synchronous Migrate() method.