public static int?GetAppInstanceIdFromHeader(HttpContext httpContext, ImplementationResolverOptions options)
{
if (!httpContext.Request.Headers.TryGetValue("AppInstance", out var appInstanceHeaders) || appInstanceHeaders.Count == 0)
{
return(options?.DefaultAppInstanceId);
}
else if (appInstanceHeaders.Count > 1)
{
throw new Exception("The AppInstance header should be specified exactly once");
}
else if (int.TryParse(appInstanceHeaders.Single(), out var appInstanceId))
{
return(appInstanceId);
}
throw new Exception("The AppInstance header should be an integer");
}
public ImplementationResolver(ImplementationResolverOptions options)
{
_options = options;
}
public static async Task <ImplementationContainer> GetContainer(HttpContext httpContext, ImplementationResolverOptions options)
{
int?appInstanceId;
if (options.AppInstanceExtractor != null)
{
appInstanceId = options.AppInstanceExtractor(httpContext);
}
else
{
appInstanceId = GetAppInstanceIdFromHeader(httpContext, options);
}
if (appInstanceId == null)
{
return(null);
}
var scopeFactory = options?.ServiceScopeFactory ?? httpContext.RequestServices.GetRequiredService <IServiceScopeFactory>();
var task = _implementations.GetOrAdd(appInstanceId.Value, id => new Lazy <Task <ImplementationContainer> >(() => CreateImplementation(id, scopeFactory)));
return(await task.Value);
}
public BusinessReflectorResolver(ImplementationResolverOptions options)
{
_options = options;
}
public MetadataModelResolver(ImplementationResolverOptions options)
{
_options = options;
}
public static async Task <ImplementationContainer> GetContainer(HttpContext httpContext, ImplementationResolverOptions options)
{
int appInstanceId;
if (!httpContext.Request.Headers.TryGetValue("AppInstance", out var appInstanceHeaders) || appInstanceHeaders.Count == 0)
{
if (options?.DefaultAppInstanceId == null)
{
return(null);
}
appInstanceId = options.DefaultAppInstanceId.Value;
}
else if (appInstanceHeaders.Count > 1)
{
throw new Exception("The AppInstance header should be specified exactly once");
}
else if (!int.TryParse(appInstanceHeaders.Single(), out appInstanceId))
{
throw new Exception("The AppInstance header should be an integer");
}
var task = _implementations.GetOrAdd(appInstanceId, id => new Lazy <Task <ImplementationContainer> >(() => CreateImplementation(id, httpContext)));
return(await task.Value);
}
public static void ConfigureServices(IServiceCollection services, IConfiguration configuration
, Action <DbContextOptionsBuilder, string> efProviderSetup, ImplementationResolverOptions implementationResolverOptions = null)
{
var provider = configuration.GetSection("EfProvider").Get <string>();
if (string.IsNullOrWhiteSpace(provider))
{
Console.WriteLine("Error: database provider is not set, the expected name is: EfProvider");
}
var connectionString = configuration.GetConnectionString("Metadata");
if (string.IsNullOrWhiteSpace(connectionString))
{
Console.WriteLine("Error: Metadata Connection string is not set, the expected name is: Metadata");
}
switch (provider)
{
case "MySql":
services.AddDbContext <MetadataDbContext, MetadataDbContext_MySql>(
options => options.UseMySql(connectionString, ServerVersion.AutoDetect(connectionString),
x => x.MigrationsAssembly(typeof(MetadataDbContext_MySql).Assembly.GetName().Name)
.MigrationsHistoryTable(HistoryRepository.DefaultTableName.ToLowerInvariant())));
break;
case "SqlServer":
services.AddDbContext <MetadataDbContext>(options => options.UseSqlServer(connectionString));
break;
case "PostgreSql":
case "PostgreSQL":
services.AddDbContext <MetadataDbContext, MetadataDbContext_PostgreSql>(options => options.UseNpgsql(connectionString,
x => x.MigrationsAssembly(typeof(MetadataDbContext_PostgreSql).Assembly.GetName().Name)));
break;
default:
throw new NotImplementedException($"The provider {provider} is not implemented yet.");
}
services.AddMultitenancy <IImplementationsContainer, ImplementationResolver>();
services.AddSingleton(implementationResolverOptions ?? new ImplementationResolverOptions {
});
services.AddScoped <EntityHelper, EntityHelper>();
services.AddSingleton <IPermissionService, PermissionCache>();
services.AddSingleton <IUsersService, UsersCache>();
services.Configure <GlobalConfiguration>(configuration.GetSection(nameof(GlobalConfiguration)));
var globaConfig = configuration.GetSection(nameof(GlobalConfiguration)).Get <GlobalConfiguration>();
services.AddSingleton <IGlobalConfiguration>(globaConfig);
LobToolsStartup.ConfigureServices(services, configuration, efProviderSetup, implementationResolverOptions?.DefaultAppInstanceId);
}
