This is the process of configuring policies. It occurs when an administrator creates a new Policy Object or adds policies to an existing Policy Object. For example, the wizard for creating a Policy Object includes a page that prompts to select a policy. The page lists the policy types defined in Active Roles, including the custom policy types. If a custom policy type is selected, the wizard provides a page for configuring the policy parameters specific to that policy type. Once the wizard is completed, the Policy Object contains a fully functional policy of the selected custom type.
Active Roles provides a graphical user interface, complete with a programming interface, for creating and managing custom policy types. Using those interfaces, Active Roles policies can be extended to meet the needs of a particular environment. Active Roles also has a deployment mechanism by which administrators put new types of policy into operation.
Since policy extension involves two interactions, Active Roles provides solutions in both areas. The Administration Service maintains policy type definitions, exposing policy types to its clients such as the Active Roles console or ADSI Provider. The console can be used to:
Normally, an Active Roles expert develops a custom policy type in a separate environment, and then exports the policy type to an export file. An Active Roles administrator deploys the policy type in the production environment by importing the export file. After that, the Active Roles console can be used to configure and apply policies of the new type.
The policy extensibility feature is built upon Policy Type objects, each of which represents a single type of policy. Policy Type objects are used within both the policy type deployment and policy type usage processes. The process of deploying a new policy type involves the creation of a Policy Type object. During the process of adding a policy of a custom type, the policy type definition is retrieved from the respective Policy Type object.
Each Policy Type object holds the following data to define a single policy type:
To create a custom policy type, you first need to create a Script Module that holds the policy script. Then, you can create a Policy Type object referring to that Script Module. When you import a policy type, Active Roles automatically creates both the Script Module and the Policy Type object for that policy type. After the Policy Type object has been created, you can add a policy of the new type to a Policy Object.
In Active Roles, Policy Type objects provide the ability to store the definition of a custom policy type in a single object. Policy Type objects can be exported and imported, which makes it easy to distribute custom policies to other environments.
When creating a new Policy Object or adding a policy to an existing Policy Object, an administrator is presented with a list of policy types derived from the Policy Type objects. Selecting a custom policy type from the list causes Active Roles to create a policy based on the settings found in the respective Policy Type object.
This section covers the following tasks specific to custom policy types:
For more information about Policy Type objects, including instructions on scripting for Policy Type objects, refer to the Active Roles SDK.
Active Roles stores Policy Type objects in the Policy Types container. You can access that container in the Active Roles console by expanding the Configuration/Server Configuration branch of the console tree.
To create a new Policy Type object
For example, if you want to create a new object in the root container, right-click Policy Types.
The display name and description are displayed on the page for selecting a policy, in the wizards that are used to configure Policy Objects.
The Script Module must exist under the Configuration/Script Modules container and hold a policy script. For information about policy scripts, see the Active Roles SDK documentation.
The policy types that have the Provisioning option selected appear on the page for selecting a policy in the wizard that is used to create a provisioning Policy Object or to add policies to an existing provisioning Policy Object. The policy types that have the Deprovisioning option selected appear in the wizard for creating a deprovisioning Policy Object or adding policies to such a Policy Object.
The list contains the names of all the functions found in the script you selected in Step 4. Every policy of this type will have the parameters that are specified by the function you select from the Function to declare parameters list. Normally, this is a function named onInit (see Active Roles SDK).
This image appears next to the display name of the policy type on the wizard page for selecting a policy to configure, to help identify and visually distinguish this policy type from the other policy types.
The image is stored in the Policy Type object. In the dialog box that appears when you click Policy Type Icon, you can view the image that is currently used. To revert to the default image, click Use Default Icon. If the button is unavailable, then the default image is currently used.