add PersistenceAdapterView

git-svn-id: https://svn.apache.org/repos/asf/activemq/trunk@1434906 13f79535-47bb-0310-9956-ffa450edef68

activemq-broker/src/main/java/org/apache/activemq/broker/jmx/PersistenceAdapterView.java

@@ -0,0 +1,74 @@
+/**
+ * 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.activemq.broker.jmx;
+
+import java.util.concurrent.Callable;
+import org.apache.activemq.store.PersistenceAdapter;
+
+public class PersistenceAdapterView implements PersistenceAdapterViewMBean {
+
+    private final String name;
+    private final PersistenceAdapter persistenceAdapter;
+
+    private Callable<String> inflightTransactionViewCallable;
+    private Callable<String> dataViewCallable;
+
+    public PersistenceAdapterView(PersistenceAdapter adapter) {
+        this.name = adapter.toString();
+        this.persistenceAdapter = adapter;
+    }
+
+    @Override
+    public String getName() {
+        return name;
+    }
+
+    @Override
+    public String getTransactions() {
+        return invoke(inflightTransactionViewCallable);
+    }
+
+    @Override
+    public String getData() {
+        return invoke(dataViewCallable);
+    }
+
+    @Override
+    public long getSize() {
+        return persistenceAdapter.size();
+    }
+
+    private String invoke(Callable<String> callable) {
+        String result = null;
+        if (callable != null) {
+            try {
+                result = callable.call();
+            } catch (Exception e) {
+                result = e.toString();
+            }
+        }
+        return result;
+    }
+
+    public void setDataViewCallable(Callable<String> dataViewCallable) {
+        this.dataViewCallable = dataViewCallable;
+    }
+
+    public void setInflightTransactionViewCallable(Callable<String> inflightTransactionViewCallable) {
+        this.inflightTransactionViewCallable = inflightTransactionViewCallable;
+    }
+}