1 files changed, 68 insertions, 0 deletions
diff --git a/java/broker/src/main/java/org/apache/qpid/server/logging/actors/AbstractManagementActor.java b/java/broker/src/main/java/org/apache/qpid/server/logging/actors/AbstractManagementActor.java
new file mode 100644
index 0000000000..8cf121b3d9
--- /dev/null
+++ b/java/broker/src/main/java/org/apache/qpid/server/logging/actors/AbstractManagementActor.java
@@ -0,0 +1,68 @@
+/*
+ *
+ * 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.logging.actors;
+
+import java.security.AccessController;
+
+import javax.security.auth.Subject;
+
+import org.apache.qpid.server.logging.RootMessageLogger;
+import org.apache.qpid.server.security.auth.AuthenticatedPrincipal;
+
+public abstract class AbstractManagementActor extends AbstractActor
+{
+    /**
+     * Holds the principal name to display when principal subject is not available.
+     * <p>
+     * This is useful for cases when users invoke JMX operation over JConsole
+     * attached to the local JVM.
+     */
+    protected static final String UNKNOWN_PRINCIPAL = "N/A";
+
+    /** used when the principal name cannot be discovered from the Subject */
+    private final String _fallbackPrincipalName;
+
+    public AbstractManagementActor(RootMessageLogger rootLogger, String fallbackPrincipalName)
+    {
+        super(rootLogger);
+        _fallbackPrincipalName = fallbackPrincipalName;
+    }
+
+    /**
+     * Returns current {@link AuthenticatedPrincipal} name or {@link #_fallbackPrincipalName}
+     * if it can't be found.
+     */
+    protected String getPrincipalName()
+    {
+        String identity = _fallbackPrincipalName;
+
+        final Subject subject = Subject.getSubject(AccessController.getContext());
+        if (subject != null)
+        {
+            AuthenticatedPrincipal authenticatedPrincipal = AuthenticatedPrincipal.getOptionalAuthenticatedPrincipalFromSubject(subject);
+            if(authenticatedPrincipal != null)
+            {
+                identity = authenticatedPrincipal.getName();
+            }
+        }
+        return identity;
+    }
+}