/// <summary>
/// Registers the specified shellContext as a dependency such that they are also reloaded when the current shell context is reloaded.
/// </summary>
public void AddDependentShell(ShellContext shellContext)
{
// If the dependent is released, nothing to do.
if (shellContext.Released)
{
return;
}
// If the dependency is already released.
if (_released)
{
// The dependent is released immediately.
shellContext.Release();
return;
}
lock (_synLock)
{
if (_dependents == null)
{
_dependents = new List <WeakReference <ShellContext> >();
}
// Remove any previous instance that represent the same tenant in case it has been released (restarted).
_dependents.RemoveAll(x => !x.TryGetTarget(out var shell) || shell.Settings.Name == shellContext.Settings.Name);
_dependents.Add(new WeakReference <ShellContext>(shellContext));
}
}
public ServiceScopeWrapper(ShellContext shellContext)
{
// Prevent the context from being disposed until the end of the scope
Interlocked.Increment(ref shellContext._refCount);
_shellContext = shellContext;
// The service provider is null if we try to create
// a scope on a disabled shell or already disposed.
if (_shellContext.ServiceProvider == null)
{
throw new ArgumentNullException(nameof(shellContext.ServiceProvider), $"Can't resolve a scope on tenant: {shellContext.Settings.Name}");
}
_serviceScope = shellContext.ServiceProvider.CreateScope();
ServiceProvider = _serviceScope.ServiceProvider;
var httpContextAccessor = ServiceProvider.GetRequiredService <IHttpContextAccessor>();
_httpContext = httpContextAccessor.HttpContext;
_existingServices = _httpContext.RequestServices;
_httpContext.RequestServices = ServiceProvider;
}
