A defines virtual services hosted on the ESB that can accept requests, mediate them, and deliver them to an actual service. A proxy service can perform transport or interface switching and expose different semantics from the actual service: WSDL, policies, and QoS aspects like WS-Security, etc. It can mediate the messages before they are delivered to the actual endpoint and mediate the responses before they reach the client. You can also list a combination of tasks to be performed on the messages received by the proxy service and terminate the flow or send a message back to the client even without sending it to the actual service.
Follow the instructions below to add a new proxy service.
- Sign in. Enter your user name and password to log on to the ESB Management Console.
- Click on Main in the left menu and then click Proxy Service under Web Services. The Create Proxy Service from Template will appear.
- Select a template that suits your mediation requirements
- Pass Through Proxy - Creates a simple proxy service on a specified endpoint. The proxy service does not perform any processing on the messages but simply forwards them to the back-end service.
- Secure Proxy - Creates a proxy service with WS-Security engaged. The service will process WS-Security on incoming requests and forward them to an unsecured back-end service.
- WSDL Based Proxy - Creates a proxy service based on the WSDL of an existing web service. Endpoint information is extracted from the remotely hosted WSDL of an actual service.
- Logging Proxy - Creates a proxy service that logs all the incoming requests and forwards them to a given endpoint. Responses from the back-end service can also be logged before routing them to the client.
- Transformer Proxy - Creates a proxy service, which transforms all the incoming requests using XSLT and then forwards them to a given endpoint. Responses from the back-end service can also be transformed before routing them to the client.
- Custom Proxy - Launches the proxy service creation wizard, where you create a new proxy service by customizing every aspect of the proxy including sequences, endpoints, transport, and other QoS settings.
For example, if you want to expose an existing service with WS-Security, you can choose the "Secure Proxy" option to create a proxy service with WS-Security enabled with a specified security policy. If you implement a scenario where an existing service is exposed over a different schema (message format), you can use the "Transformer Proxy" option to easily set up a proxy service that transforms requests and responses based on specified XSLT configurations.
- Specify the options for the selected template as described in the following topics:
- Specify an option for publishing a WSDL for this proxy service.
- Select the transports this proxy service will use. Only are available in the list.
- Click Create or Finish at the bottom of the page to create the proxy service. It now appears in the Proxy Service list on the Deployed Services screen.