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/*
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
package org.apache.qpid.server.model.adapter;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.UUID;
import org.apache.qpid.server.model.AuthenticationProvider;
import org.apache.qpid.server.model.Broker;
import org.apache.qpid.server.plugin.AuthenticationManagerFactory;
import org.apache.qpid.server.plugin.QpidServiceLoader;
import org.apache.qpid.server.security.auth.manager.AuthenticationManager;
import org.apache.qpid.server.security.auth.manager.PrincipalDatabaseAuthenticationManager;
import org.apache.qpid.server.model.adapter.AuthenticationProviderAdapter.PrincipalDatabaseAuthenticationManagerAdapter;
import org.apache.qpid.server.model.adapter.AuthenticationProviderAdapter.SimpleAuthenticationProviderAdapter;
public class AuthenticationProviderFactory
{
private final Iterable<AuthenticationManagerFactory> _factories;
private Collection<String> _supportedAuthenticationProviders;
public AuthenticationProviderFactory(QpidServiceLoader<AuthenticationManagerFactory> authManagerFactoryServiceLoader)
{
_factories = authManagerFactoryServiceLoader.atLeastOneInstanceOf(AuthenticationManagerFactory.class);
List<String> supportedAuthenticationProviders = new ArrayList<String>();
for (AuthenticationManagerFactory factory : _factories)
{
supportedAuthenticationProviders.add(factory.getType());
}
_supportedAuthenticationProviders = Collections.unmodifiableCollection(supportedAuthenticationProviders);
}
/**
* Creates {@link AuthenticationProvider} for given ID, {@link Broker} and attributes.
* <p>
* The configured {@link AuthenticationManagerFactory}'s are used to try to create the {@link AuthenticationProvider}.
* The first non-null instance is returned. The factories are used in non-deterministic order.
*/
public AuthenticationProvider create(UUID id, Broker broker, Map<String, Object> attributes)
{
for (AuthenticationManagerFactory factory : _factories)
{
AuthenticationManager manager = factory.createInstance(attributes);
if (manager != null)
{
AuthenticationProviderAdapter<?> authenticationProvider;
if (manager instanceof PrincipalDatabaseAuthenticationManager)
{
authenticationProvider = new PrincipalDatabaseAuthenticationManagerAdapter(id, broker,
(PrincipalDatabaseAuthenticationManager) manager, attributes, factory.getAttributeNames());
}
else
{
authenticationProvider = new SimpleAuthenticationProviderAdapter(id, broker, manager, attributes, factory.getAttributeNames());
}
return authenticationProvider;
}
}
throw new IllegalArgumentException("No authentication provider factory found for configuration attributes " + attributes);
}
public Collection<String> getSupportedAuthenticationProviders()
{
return _supportedAuthenticationProviders;
}
}
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