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User registry bridge for federated repositories

The user registry bridge is a read-only adapter that provides an interface between federated repositories and an underlying user registry implementation, which can be either a local operating system user registry or a custom user registry implementation.

The user registry bridge enables IBM WebSphere Application Server applications to use the user registry implementation. It can work with any user registry that implements the com.ibm.websphere.security.UserRegistry interface, without knowing the details of its implementation. This capability makes the bridge versatile and allows it to connect to, and use, various registries.

The user registry bridge allows access to the same repository information without any platform-specific implementation. Thus, it eliminates the need to have a specialized user registry bridge for each operating system.

We can federate and configure the local operating system user registry, a custom user registry, or both, as a federated repository. The user registry bridge handles user registry-related requests from federated repositories, makes appropriate calls to the underlying user registry implementation, and returns data that is formatted according to the federated repositories specifications.

Therefore, to use the user registry bridge configure your user registry under federated repositories. This configuration can map the properties in the underlying user registry to the properties for the federated repository. We can also configure any user registry specific information, if required. For information about how to configure the user registry bridge, see Configuring the user registry bridge for federated repositories .

The following figure illustrates the difference between configuring a federated repository user registry with and without the user registry bridge.

Figure 1. Configuring a federated repository user registry without the user registry bridge

Figure 2. Configuring a federated repository user registry with the user registry bridge

As shown in the previous figure, using the same adapter, which is the user registry bridge, we can configure multiple user registries under federated repositories. For example, we can configure a local operating system user registry and one or more custom user registries.


Limitations

The following limitations exist:


Supported user registries

WebSphere Application Server applications can access the user registry properties of the following user registry implementations as a read-only repository:


Related tasks

  • Configure the user registry bridge for federated repositories