Author: aadamchik
Date: Tue Oct 10 07:36:08 2006
New Revision: 454754
URL: http://svn.apache.org/viewvc?view=rev&rev=454754
Log:
CAY-684 - added a sniffer that checks the agent presence in the environment;
moved the agent to cayenne.instrument package
Added:
incubator/cayenne/main/trunk/core/cayenne-jdk1.5/src/main/java/org/apache/cayenne/instrument/
incubator/cayenne/main/trunk/core/cayenne-jdk1.5/src/main/java/org/apache/cayenne/instrument/InstrumentUtil.java
Added:
incubator/cayenne/main/trunk/core/cayenne-jdk1.5/src/main/java/org/apache/cayenne/instrument/InstrumentUtil.java
URL:
http://svn.apache.org/viewvc/incubator/cayenne/main/trunk/core/cayenne-jdk1.5/src/main/java/org/apache/cayenne/instrument/InstrumentUtil.java?view=auto&rev=454754
==============================================================================
---
incubator/cayenne/main/trunk/core/cayenne-jdk1.5/src/main/java/org/apache/cayenne/instrument/InstrumentUtil.java
(added)
+++
incubator/cayenne/main/trunk/core/cayenne-jdk1.5/src/main/java/org/apache/cayenne/instrument/InstrumentUtil.java
Tue Oct 10 07:36:08 2006
@@ -0,0 +1,50 @@
+/*****************************************************************
+ * 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.cayenne.instrument;
+
+import java.lang.reflect.Method;
+
+/**
+ * Instrumentation utilities.
+ *
+ * @since 3.0
+ * @author Andrus Adamchik
+ */
+public class InstrumentUtil {
+
+ /**
+ * Checks whether the JVM was started with CayenneAgent.
+ */
+ public static boolean isAgentLoaded() {
+
+ // check whether CayenneAgent class is initialized and instrumentation
is set.
+ try {
+ Class agent = Class.forName(
+ "org.apache.cayenne.instrument.CayenneAgent",
+ false,
+ Thread.currentThread().getContextClassLoader());
+
+ Method getInstrumentation =
agent.getDeclaredMethod("getInstrumentation");
+ return getInstrumentation.invoke(null) != null;
+ }
+ catch (Throwable th) {
+ return false;
+ }
+ }
+}
