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Provider Capability Interfaces

If you have examined the UserStorageProvider interface closely you might notice that it does not define any methods for locating or managing users. These methods are actually defined in other capability interfaces depending on what scope of capabilities your external user store can provide and execute on. For example, some external stores are read-only and can only do simple queries and credential validation. You will only be required to implement the capability interfaces for the features you are able to. You can implement these interfaces:

SPI Description

org.keycloak.storage.user.UserLookupProvider

This interface is required if you want to be able to log in with users from this external store. Most (all?) providers implement this interface.

org.keycloak.storage.user.UserQueryProvider

Defines complex queries that are used to locate one or more users. You must implement this interface if you want to view and manage users from the administration console.

org.keycloak.storage.user.UserRegistrationProvider

Implement this interface if your provider supports adding and removing users.

org.keycloak.storage.user.UserBulkUpdateProvider

Implement this interface if your provider supports bulk update of a set of users.

org.keycloak.credential.CredentialInputValidator

Implement this interface if your provider can validate one or more different credential types (for example, if your provider can validate a password).

org.keycloak.credential.CredentialInputUpdater

Implement this interface if your provider supports updating one or more different credential types.