Sandeep's Blog: Service virtualization using OSB

service virtualization is one of the main feature of OSB. Service virtualization is the abstraction of a physical service through a proxy or intermediary service. In service virtualization, the service intermediary interacts with the service consumer and hides the physical location of the service provider. In other words, communication between the service provider and service consumer is done through a service intermediary, creating a gateway for application integration.

In this Use case we will use one of the external web service which is available over web and will call that webservice from OSB. There are numerous webservices which are available in Online one such kind webservice is Bank BLZ Service (http://www.thomas-bayer.com/axis2/services/BLZService?wsdl). By using this webservice we can fetch Bank Sort Codes (called Bank BLZ codes) for banks in Germany. In the request, you need to pass the BLZ code for any bank in Germany and it comes back with the bank details.

Create new project named BLZ service

Create folder structure like below

Copy the WSDL file from location http://www.thomas-bayer.com/axis2/services/BLZService?wsdl and place under WSDL folder

Creating Business Service

Drag and drop HTTP component from Technology palate to External Services lane.

Service Name: BS_BLZService

Location: browse through “BusinessService” folder we created in earlier step

Transport: http

Select “WSDL” from available options and browse to wsdl location

populates wsdl file with port after reading the WSDL file we have chosen in the previous step

populates the endpoint URI for the exposed web service to be invoked

Click Finish

Business Service is created on the External Services lane and this exists under “BusinessService” folder

Create Proxy Service

Drag and drop HTTP component from Technology palate to Proxy Services

Fill up the mandatory details

Service Name: PS_BLZService

Location: browse through “ProxyService” folder we created in earlier step
Transport: http

Checking “Generate Pipeline” check box will create pipeline along with Proxy Service

We will use the same WSDL that we used to create business service

populates endpoint URI

Proxy Service is created on the Proxy Services lane and this resides under “ProxyService” folder

Connect Pipeline with business service

Double-click on the PS_BLZServicePipeline which opens up in new editor with .pipeline extension. Here Routing node inside route node is created automatically when we wire pipeline with business service