Access control
Valtimo supports Policy Based Access Control (PBAC) as an authorization layer via this module. This layer allows you to restrict access to functionality or data based on policies.
Roles
A role is an entity where permissions can be linked to. The role names should match the roles in the JWT token by OpenId/OAuth2 (Keycloak).
Permissions
Permissions define whether a user with a specific role can access or act on the configured resource.
Multiple permissions are evaluated as OR: The outcome of an authorization request is true when any of the permissions passes all the configured checks. When permissions are used to filter data from a list query, the result will contain every entry that passes the checks of any permission.
When selecting applicable permissions for evaluation, the following checks are performed:
The user has the role that is configured for the permission
The requested resource matches the permission's resource
The required action matches the permission's action
Conditions
Extra conditions can be applied to a permission to tighten the access to resources. These conditions are optional. Conditions are evaluated as AND, which means the all configured conditions on a permission should evaluate to true to pass the permission checks.
Conditions can also be nested by using a container. This allows you to join another resource to the root resource, on which you can add conditions as well. An example of this can be found here
When is access control applied?
Access control is always applied by default. This means that when a user requests a resource, the access control layer will check if the user has the required permissions to access the resource. To prevent certain actions from being checked by the access control layer, this needs to be explicitly configured. Tasks and listeners executed by BPMN models are not considered being accessed by a user, and therefore do not have access control applied to them. The exception is user tasks. Since a user completes these tasks, access control is applied to them to verify the user is allowed to complete the task.
To prevent access control from being applied when writing custom code, runWithoutAuthorization can be used. See the extending valtimo page for more information.
Configuration
The following sections contains information on how to configure and use access control.
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