/// <inheritdoc />
public async Task InvokeAsync(HttpContext context, RequestDelegate next)
{
Ensure.IsNotNull(context, nameof(context));
Ensure.IsNotNull(next, nameof(next));
IServiceScope scope = null;
IServiceProvider requestServices = null;
// MA - Resolve the current tenant.
var tenantId = await _tenantResolver.ResolveCurrentAsync(context);
if (!tenantId.Equals(TenantId.Empty) && !tenantId.Equals(TenantId.Default))
{
// MA - Get the tenant-scoped service provider
var services = _tenantServiceProviderResolver.GetTenantServiceProvider(tenantId);
// MA - Create the scope
scope = services.CreateScope();
// MA - Flow the scope service provider as the RequestServices instance.
requestServices = context.RequestServices;
context.RequestServices = scope.ServiceProvider;
// MA - Flow the tenant services to the HTTP context.
var httpFeature = new TenantServicesHttpFeature(services);
context.Features.Set <ITenantServicesHttpFeature>(httpFeature);
// MA - Get the work context and flow the tenant ID
var extension = new TenantWorkContextExtension(tenantId);
var workContext = scope.ServiceProvider.GetRequiredService <IWorkContext>();
workContext.Extensions.SetExtension <ITenantWorkContextExtension>(extension);
}
await next(context);
if (scope != null)
{
// MA - Remove access to the HTTP feature by replacing it
context.Features.Set <ITenantServicesHttpFeature>(new TenantServicesHttpFeature());
// MA - Restore the previous instance of request services
context.RequestServices = requestServices;
// MA - Dispose of the scope
scope.Dispose();
}
}