Package org.wildfly.security.credential.store

Class CredentialStoreSpi

java.lang.Object

org.wildfly.security.credential.store.CredentialStoreSpi

public abstract class CredentialStoreSpi
extends Object

SPI for credential store provider to implement.

Author:

Peter Skopek

Field Summary

Fields

Modifier and Type	Field	Description
protected boolean	initialized	Field indicating successful initialization (initialize(Map, CredentialStore.ProtectionParameter, Provider[]).

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	CredentialStoreSpi()	Construct a new instance of this SPI.

Method Summary

Modifier and Type	Method	Description
boolean	exists(String credentialAlias, Class<? extends Credential> credentialType)	Check whether credential store service has an entry associated with the given credential alias of specified credential type.
void	flush()	Flush the credential store contents to storage.
Set<String>	getAliases()	Returns credential aliases stored in this store as Set<String>.
Set<String>	getCredentialTypesForAlias(String credentialAlias)	Returns credential types stored in this store with given alias as Set<String>.
abstract void	initialize(Map<String,String> attributes, CredentialStore.ProtectionParameter protectionParameter, Provider[] providers)	Initialize credential store service with given attributes.
boolean	isInitialized()	Checks whether underlying credential store service is initialized.
abstract boolean	isModifiable()	Check if credential store service supports modification of its store
abstract void	remove(String credentialAlias, Class<? extends Credential> credentialType, String credentialAlgorithm, AlgorithmParameterSpec parameterSpec)	Remove the credentialType with from given alias from the credential store service.
abstract <C extends Credential> C	retrieve(String credentialAlias, Class<C> credentialType, String credentialAlgorithm, AlgorithmParameterSpec parameterSpec, CredentialStore.ProtectionParameter protectionParameter)	Retrieve the credential stored in the store under the given alias, matching the given criteria.
abstract void	store(String credentialAlias, Credential credential, CredentialStore.ProtectionParameter protectionParameter)	Store credential to the credential store service under the given alias.
void	validateAttribute(Map<String,String> attributes, List<String> validAttributes)	Validate given attributes in credential store implementation.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

initialized

protected boolean initialized

Field indicating successful initialization (initialize(Map, CredentialStore.ProtectionParameter, Provider[]). Each subclass should set this field.

Constructor Detail

CredentialStoreSpi

protected CredentialStoreSpi()

Construct a new instance of this SPI.

Method Detail

initialize

public abstract void initialize(Map<String,String> attributes,
                                CredentialStore.ProtectionParameter protectionParameter,
                                Provider[] providers)
                         throws CredentialStoreException

Initialize credential store service with given attributes. This procedure should set initialized after successful initialization.

Parameters:

attributes - attributes to used to pass information to credential store service

protectionParameter - the store-wide protection parameter to apply, or null for none

providers - providers to be injected into SPI implementation to get custom object instances of various type from, or null for none

Throws:

CredentialStoreException - if initialization fails due to any reason

isInitialized

public boolean isInitialized()

Checks whether underlying credential store service is initialized.

Returns:

true in case of initialization passed successfully, false otherwise.

isModifiable

public abstract boolean isModifiable()

Check if credential store service supports modification of its store

Returns:

true in case of modification of the store is supported, false otherwise

exists

public boolean exists(String credentialAlias,
                      Class<? extends Credential> credentialType)
               throws CredentialStoreException

Check whether credential store service has an entry associated with the given credential alias of specified credential type. The default implementation simply attempts to retrieve the credential without a protection parameter, and returns true if any credential was returned. Credential stores which use a protection parameter should override this method.

Parameters:

credentialAlias - key to check existence

credentialType - to class of credential to look for

Returns:

true in case key exist in store otherwise false

Throws:

CredentialStoreException - when there is a problem with credential store

store

public abstract void store(String credentialAlias,
                           Credential credential,
                           CredentialStore.ProtectionParameter protectionParameter)
                    throws CredentialStoreException,
                           UnsupportedCredentialTypeException

Store credential to the credential store service under the given alias. If given alias already contains specific credential type type the credential replaces older one. Note: CredentialStoreSpi supports storing of multiple entries (credential types) per alias. Each must be of different credential type, or differing algorithm, or differing parameters.

Parameters:

credentialAlias - to store the credential to the store

credential - instance of Credential to store

protectionParameter - the protection parameter to apply to the entry, or null for none

Throws:

CredentialStoreException - when the credential cannot be stored

UnsupportedCredentialTypeException - when the credentialType is not supported

retrieve

public abstract <C extends Credential> C retrieve(String credentialAlias,
                                                  Class<C> credentialType,
                                                  String credentialAlgorithm,
                                                  AlgorithmParameterSpec parameterSpec,
                                                  CredentialStore.ProtectionParameter protectionParameter)
                                           throws CredentialStoreException

Retrieve the credential stored in the store under the given alias, matching the given criteria.

Type Parameters:

C - the credential type

Parameters:

credentialAlias - to find the credential in the store

credentialType - the credential type class (must not be null)

credentialAlgorithm - the credential algorithm to match, or null to match any algorithm

parameterSpec - the parameter specification to match, or null to match any parameters

protectionParameter - the protection parameter to use to access the entry, or null for none

Returns:

instance of Credential stored in the store, or null if the credential is not found

Throws:

CredentialStoreException - if the credential cannot be retrieved due to an error

remove

public abstract void remove(String credentialAlias,
                            Class<? extends Credential> credentialType,
                            String credentialAlgorithm,
                            AlgorithmParameterSpec parameterSpec)
                     throws CredentialStoreException

Remove the credentialType with from given alias from the credential store service.

Parameters:

credentialAlias - alias to remove

credentialType - the credential type class to match (must not be null)

credentialAlgorithm - the credential algorithm to match, or null to match all algorithms

parameterSpec - the credential parameters to match, or null to match all parameters

Throws:

CredentialStoreException - if the credential cannot be removed due to an error

flush

public void flush()
           throws CredentialStoreException

Flush the credential store contents to storage. If the credential store does not support or require explicit flushing, this method should do nothing and simply return.

Throws:

CredentialStoreException - if the flush fails for some reason.

getAliases

public Set<String> getAliases()
                       throws UnsupportedOperationException,
                              CredentialStoreException

Returns credential aliases stored in this store as Set<String>. It is not mandatory to override this method (throws UnsupportedOperationException by default).

Returns:

Set<String> of all keys stored in this store

Throws:

UnsupportedOperationException - when this method is not supported by the underlying credential store

CredentialStoreException - if there is any problem with internal store

getCredentialTypesForAlias

public Set<String> getCredentialTypesForAlias(String credentialAlias)
                                       throws UnsupportedOperationException

Returns credential types stored in this store with given alias as Set<String>. It is not mandatory to override this method (throws UnsupportedOperationException by default).

Parameters:

credentialAlias - to find the credentials types in the store

Returns:

Set<String> of all credential types stored in this store with credential alias

Throws:

UnsupportedOperationException - when this method is not supported by the underlying credential store

validateAttribute

public void validateAttribute(Map<String,String> attributes,
                              List<String> validAttributes)
                       throws CredentialStoreException

Validate given attributes in credential store implementation.

Parameters:

attributes - attributes to used to pass information to credential store service.

validAttributes - valid attributes based on credential store implementation.

Throws:

CredentialStoreException - if validation fails