/// <summary>
/// The auto setup middleware invoke.
/// </summary>
/// <param name="httpContext">
/// The http context.
/// </param>
/// <returns>
/// The <see cref="Task"/>.
/// </returns>
public async Task InvokeAsync(HttpContext httpContext)
{
if (_setupOptions != null && _shellSettings.State == TenantState.Uninitialized)
{
// Try to acquire a lock before starting installation, it guaranties an atomic setup in multi instances environment.
(var locker, var locked) = await _distributedLock.TryAcquireAutoSetupLockAsync(_lockOptions);
if (!locked)
{
throw new TimeoutException($"Fails to acquire an auto setup lock for the tenant: {_setupOptions.ShellName}");
}
await using var acquiredLock = locker;
if (_shellSettings.State == TenantState.Uninitialized)
{
var pathBase = httpContext.Request.PathBase;
if (!pathBase.HasValue)
{
pathBase = "/";
}
// Check if the tenant was installed by another instance.
var settings = await _shellSettingsManager.LoadSettingsAsync(_shellSettings.Name);
if (settings.State != TenantState.Uninitialized)
{
await _shellHost.ReloadShellContextAsync(_shellSettings, eventSource : false);
httpContext.Response.Redirect(pathBase);
return;
}
var setupService = httpContext.RequestServices.GetRequiredService <ISetupService>();
if (await SetupTenantAsync(setupService, _setupOptions, _shellSettings))
{
if (_setupOptions.IsDefault)
{
// Create the rest of the shells for further on demand setup.
foreach (var setupOptions in _options.Tenants)
{
if (_setupOptions != setupOptions)
{
await CreateTenantSettingsAsync(setupOptions);
}
}
}
httpContext.Response.Redirect(pathBase);
return;
}
}
}
await _next.Invoke(httpContext);
}