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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
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*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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package org.hotswap.agent.plugin.proxy.test.util;
import org.hotswap.agent.plugin.proxy.HotSwapTool;
import org.hotswap.agent.plugin.proxy.MultistepProxyTransformer;
import org.hotswap.agent.plugin.proxy.ProxyPlugin;
import org.hotswap.agent.plugin.proxy.hscglib.CglibProxyTransformer;
import org.hotswap.agent.plugin.proxy.java.JavaProxyTransformer;
import org.hotswap.agent.util.test.WaitHelper;
/**
* Shortcut methods for testing. Methods are named this way to make them more visible in the test code.
*
* @author Ivan Dubrov
*/
public class HotSwapTestHelper {
/**
* Returns the current version of the inner classes of an outer class.
* <p/>
* Caller class is used as an outer class.
*
* @return the version of the inner classes of the outer class
*/
public static int __version__() {
return HotSwapTool.getCurrentVersion(determineOuter(0));
}
/**
* Redefines all inner classes of a outer class to a specified version. Inner classes who do not have a particular
* representation for a version remain unchanged.
* <p/>
* Caller class is used as an outer class.
*
* @param versionNumber
* the target version number
*/
public static void __toVersion__Delayed(int versionNumber, Class<?>... extra) {
MultistepProxyTransformer.addThirdStep = true;
HotSwapTool.toVersion(determineOuter(0), versionNumber, extra);
// allow time for multiple redefinitions
WaitHelper.waitForCommand(new WaitHelper.Command() {
@Override
public boolean result() throws Exception {
return !CglibProxyTransformer.isReloadingInProgress() && !JavaProxyTransformer.isReloadingInProgress();
}
});
MultistepProxyTransformer.addThirdStep = false;
}
public static void __toVersion__Delayed_JavaProxy(int versionNumber, Class<?>... extra) {
ProxyPlugin.reloadFlag = true;
HotSwapTool.toVersion(determineOuter(0), versionNumber, extra);
// allow time for multiple redefinitions
WaitHelper.waitForCommand(new WaitHelper.Command() {
@Override
public boolean result() throws Exception {
return !ProxyPlugin.reloadFlag;
}
});
ProxyPlugin.reloadFlag = false;
}
/**
* Redefines all inner classes of a outer class to a specified version. Inner classes who do not have a particular
* representation for a version remain unchanged.
* <p/>
* Caller class is used as an outer class.
*
* @param versionNumber
* the target version number
*/
public static void __toVersion__(int versionNumber, Class<?>... extra) {
HotSwapTool.toVersion(determineOuter(0), versionNumber, extra);
}
/**
* Helper method to determine caller outer class.
* <p/>
* Takes caller class and finds its top enclosing class (which is supposed to be test class).
*
* @param level
* on which level this call is being made. 0 - call is made immediately in the method of HotSwapTool.
* @return outer class reference
*/
private static Class<?> determineOuter(int level) {
StackTraceElement[] stack = Thread.currentThread().getStackTrace();
ClassLoader cl = Thread.currentThread().getContextClassLoader();
// one for Thread#getStackTrace
// one for #determineOuter
// one for the caller
String callerName = stack[level + 3].getClassName();
try {
Class<?> clazz = cl.loadClass(callerName);
while (clazz.getEnclosingClass() != null) {
clazz = clazz.getEnclosingClass();
}
return clazz;
} catch (ClassNotFoundException e) {
throw new IllegalArgumentException("Cannot find caller class: " + callerName, e);
}
}
}