1 files changed, 77 insertions, 0 deletions
diff --git a/java/broker/src/main/java/org/apache/qpid/server/model/adapter/AuthenticationProviderFactory.java b/java/broker/src/main/java/org/apache/qpid/server/model/adapter/AuthenticationProviderFactory.java
new file mode 100644
index 0000000000..e5108ebbcf
--- /dev/null
+++ b/java/broker/src/main/java/org/apache/qpid/server/model/adapter/AuthenticationProviderFactory.java
@@ -0,0 +1,77 @@
+/*
+ *
+ * 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.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.security.group.GroupPrincipalAccessor;
+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;
+
+    public AuthenticationProviderFactory(QpidServiceLoader<AuthenticationManagerFactory> authManagerFactoryServiceLoader)
+    {
+        _factories = authManagerFactoryServiceLoader.atLeastOneInstanceOf(AuthenticationManagerFactory.class);
+    }
+
+    /**
+     * 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.
+     * @param groupPrincipalAccessor TODO
+     */
+    public AuthenticationProvider create(UUID id, Broker broker, Map<String, Object> attributes, GroupPrincipalAccessor groupPrincipalAccessor)
+    {
+        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);
+                }
+                else
+                {
+                    authenticationProvider = new SimpleAuthenticationProviderAdapter(id, broker, manager, attributes);
+                }
+                authenticationProvider.setGroupAccessor(groupPrincipalAccessor);
+                return authenticationProvider;
+            }
+        }
+
+        throw new IllegalArgumentException("No authentication provider factory found for configuration attributes " + attributes);
+    }
+
+}