I have written a customised DomainTenantResolveContributor which works just fine. It allows me to access the host via admin.{domain}.com and my various sub-domain tenants. One thing is escaping me however. I would like to return a 404 page when a tenant is not found. This seems like it should be simple, but no matter what I try in the framework, I cannot seem to kill the request and return a 404 if the tenant is not found. I have tried multiple approaches all with the same result, they just result in being sent to the host login which is certainly not desirable.
var tenantInfo = _tenantStore.Find(tenancyName);
if (tenantInfo == null)
{
// No tenant found matching the given name, return 404.
throw new EntityNotFoundException();
}
I'd really appreciate any advice on how to kill the request and redirect to a 404 here. From my reading .NET core should auto handle these types of exceptions but that is not happening here.
Thanks, Barry.
3 Answer(s)
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hi
Can you share your full code?
maybe you can throw a custom exception and catch it in an asp net core middleware. Then you can return a page or redirect a page in middleware.
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I managed to get this to work, albeit in a bit of a manual way. I could not find any way to reliably abort the request and return a 404 page, so I have handled it with a redirect and it works well.
public class MyProjectDomainTenantResolveContributor : ITenantResolveContributor, ITransientDependency { private readonly IHttpContextAccessor _httpContextAccessor; private readonly IWebMultiTenancyConfiguration _multiTenancyConfiguration; private readonly IRepository<Tenant> _tenantRepository; private readonly IConfigurationRoot _appConfiguration; public MyProjectDomainTenantResolveContributor( IHttpContextAccessor httpContextAccessor, IWebMultiTenancyConfiguration multiTenancyConfiguration, IRepository<Tenant> tenantRepository, IAppConfigurationAccessor appConfigurationAccessor) { _httpContextAccessor = httpContextAccessor; _multiTenancyConfiguration = multiTenancyConfiguration; _tenantRepository = tenantRepository; _appConfiguration = appConfigurationAccessor.Configuration; } public int? ResolveTenantId() { if (_multiTenancyConfiguration.DomainFormat.IsNullOrEmpty()) { return null; } var httpContext = _httpContextAccessor.HttpContext; if (httpContext == null) { return null; } var hostName = httpContext.Request.Host.Host.RemovePreFix("http://", "https://").RemovePostFix("/"); var domainFormat = _multiTenancyConfiguration.DomainFormat.RemovePreFix("http://", "https://").Split(':')[0].RemovePostFix("/"); var result = new FormattedStringValueExtracter().Extract(hostName, domainFormat, true, '/'); if (!result.IsMatch || !result.Matches.Any()) { // Allow local testing in iis express without redirecting. if (hostName == "localhost") { return null; } // No tenant, force our default tenant. httpContext.Response.Redirect(_appConfiguration["App:MissingTenantUrl"]); return null; } var tenancyName = result.Matches[0].Value; if (tenancyName.IsNullOrEmpty() || string.Equals(tenancyName, "www", StringComparison.OrdinalIgnoreCase)) { // Allow local testing in iis express without redirecting. if (hostName == "localhost") { return null; } // No tenant, force our default tenant. httpContext.Response.Redirect(_appConfiguration["App:MissingTenantUrl"]); return null; } // Allow the use of admin.domain.com as the host url. if (string.Equals(tenancyName, "admin", StringComparison.OrdinalIgnoreCase)) { return null; } // Check if a tenant with the given name exists. var tenant = _tenantRepository.FirstOrDefault(t => t.TenancyName == tenancyName); if (tenant == null) { // No tenant found matching the given name, return 404. httpContext.Response.StatusCode = 404; httpContext.Response.Redirect(_appConfiguration["App:MissingTenantUrl"] + "/Error?statusCode=404"); return null; } // Return tenant id. return tenant.Id; } } -
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Thanks @compassinformatics17 for sharing your solution.
