Develop a custom user registry for Liberty

We can develop a custom user registry class by implementing the com.ibm.websphere.security.UserRegistry interface in the Liberty server.

The UserRegistry interface is a Service Program Interface (SPI) that enables support to virtually any type of account repository. For a general view of stand-alone custom registries, see Stand-alone custom registries.

1. Implement the custom user registry.

   See Develop the UserRegistry interface for using custom registries.

2. Convert the implementation class into an OSGi service. We can do the conversion in the following ways:
   • Convert your UserRegistry class into a Declarative Service (DS) component. For more information, see Declaring your services to OSGi Declarative Services.
   • Write a new UserRegistry class that is a DS component and delegate it to your UserRegistry class.

   • Register your UserRegistry class directly in the Service Registry (SR) using the OSGi core APIs.

     See Working with the OSGi service registry.

3. Package the custom user registry as an OSGi bundle and export the UserRegistry service. For information on creating an OSGi bundle, see Create an OSGi service bundle.

4. extensionCreate a feature manifest to include the OSGi bundle.

5. After the feature is installed into the user product extension location, configure the server.xml file with the feature name. For example:

   <featureManager>
      ...
      <feature>usr:customRegistrySample-1.0</feature>
   </featureManager>