AdroitLogic Private Ltd.

This article describes the simple - yet powerful support for JTA transactions, within the UltraESB. The UltraESB transports are capable of reading a message within a resource local (e.g. JMS local) or JTA transaction - to ensure that a rollback on the message during processing will put the message back into the original location for re-processing. Additionally the UltraESB can perform transactional mediation for messages received over any transport - such as HTTP/S, and this article gives an example.

This article describes how the UltraESB can be used as a high performance WS-Security gateway in an enterprise deployment. The example demonstrates how the UltraESB verifies the timestamp and the signature and performs decryption of an encrypted SOAP message, and forwards a valid request to a backend service after removing the security headers. The response is signed and encrypted, and then returned back to the client.

This example introduces XSD schema validation of XML payloads with the UltraESB. Additionally it shows how the UltraESB performs error handling and recovery - and how a sequence defines another sequence as its error handler.

This example shows a Proxy service capable of mediating a Jax-WS service, and additionally accepting FastInfoset requests and forwarding them to non-FastInfoset compatible backend services by converting the requests to regular XML. The responses from the backend services are converted again to FastInfoset requests, and sent back to the clients.

This example demonstrates a simple SOAP Proxy service, and the use of request filters to make service resources such as WSDL's, XSD's available at the same URL of a service.

This sample describes the ability of the UltraESB to handle, proxy or mediate a message of almost any format. In this example, we not only proxy a binary Hessian message over HTTP, but if the Hessian classes are available to the runtime, we even show how the UltraESB could read and process the message in transit.

This example shows how HTTP Basic and Digest authentication could be enabled on a transport for authentication, and the user information retrieved during message mediation.

Although the UltraESB is mainly targetted towards service interactions, sometimes services return HTML content, which is not typically well handled by an ESB. This example shows the ability of the UltraESB to proxy HTML responses, acting as a Reverse Proxy