private static IDataContext GetPerpetuumDatabases(IServiceProvider container, IConfiguration configuration)
{
IEnumerable <Assembly> asm = AssemblyLoader.Instance.RuntimeAssemblies;
var providers = asm.SelectMany(a => a.DefinedTypes).Where(type => typeof(IDatabaseProvider).IsAssignableFrom(type.AsType()));
IDataContext dataContext = new DataContext();
var databaseConfigurations = container.GetService(typeof(IOptions <DataProviderConfiguration>)) as IOptions <DataProviderConfiguration>;
foreach (var dbConfig in databaseConfigurations.Value.Databases)
{
IDatabaseProvider provider;
try
{
var providerType = providers.Single(ti => ti.Name.StartsWith(dbConfig.Type));
var connectionString = configuration.GetConnectionString(dbConfig.ConnectionId);
provider = Activator.CreateInstance(providerType.AsType(), new object[] { dbConfig.ProviderName, connectionString }) as IDatabaseProvider;
}
catch (InvalidOperationException ioe)
{
throw new InvalidOperationException($"Could not find a single DB provider of type \"{dbConfig.ProviderName}\"", ioe);
}
catch (Exception exc)
{
throw new InvalidOperationException($"Unable to activate an instance of type \"{dbConfig.ProviderName}\". Please see inner exception details.", exc);
}
dataContext.AddDataContext(provider);
}
return(dataContext);
}