From 762e346922e356de685b83863bf1cababce10a47 Mon Sep 17 00:00:00 2001
From: Nils Christian Ehmke <nie@informatik.uni-kiel.de>
Date: Tue, 30 Apr 2013 17:50:38 +0200
Subject: [PATCH] Removed the update Thread; Added the mirror framework for
 easier reflection calls

---
 Kieker.WebGUI/lib/mirror-1.6.1.LICENSE        |  58 +++++++
 Kieker.WebGUI/pom.xml                         |   5 +
 .../webgui/service/impl/util/ACManager.java   |   4 +-
 .../webgui/service/impl/util/Analysis.java    | 156 +++---------------
 4 files changed, 92 insertions(+), 131 deletions(-)
 create mode 100644 Kieker.WebGUI/lib/mirror-1.6.1.LICENSE

diff --git a/Kieker.WebGUI/lib/mirror-1.6.1.LICENSE b/Kieker.WebGUI/lib/mirror-1.6.1.LICENSE
new file mode 100644
index 00000000..b3c4b689
--- /dev/null
+++ b/Kieker.WebGUI/lib/mirror-1.6.1.LICENSE
@@ -0,0 +1,58 @@
+The Apache Software License - ASL - v2.0
+Project: http://projetos.vidageek.net/mirror/
+Description: Mirror
+License: http://www.apache.org/licenses/LICENSE-2.0.txt
+
+Apache License
+
+Version 2.0, January 2004
+
+http://www.apache.org/licenses/ 
+
+TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+1. Definitions.
+
+"License" shall mean the terms and conditions for use, reproduction, and distribution as defined by Sections 1 through 9 of this document.
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+
+"You" (or "Your") shall mean an individual or Legal Entity exercising permissions granted by this License.
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+"Source" form shall mean the preferred form for making modifications, including but not limited to software source code, documentation source, and configuration files.
+
+"Object" form shall mean any form resulting from mechanical transformation or translation of a Source form, including but not limited to compiled object code, generated documentation, and conversions to other media types.
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+"Work" shall mean the work of authorship, whether in Source or Object form, made available under the License, as indicated by a copyright notice that is included in or attached to the work (an example is provided in the Appendix below).
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+"Derivative Works" shall mean any work, whether in Source or Object form, that is based on (or derived from) the Work and for which the editorial revisions, annotations, elaborations, or other modifications represent, as a whole, an original work of authorship. For the purposes of this License, Derivative Works shall not include works that remain separable from, or merely link (or bind by name) to the interfaces of, the Work and Derivative Works thereof.
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+6. Trademarks. This License does not grant permission to use the trade names, trademarks, service marks, or product names of the Licensor, except as required for reasonable and customary use in describing the origin of the Work and reproducing the content of the NOTICE file.
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+7. Disclaimer of Warranty. Unless required by applicable law or agreed to in writing, Licensor provides the Work (and each Contributor provides its Contributions) on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied, including, without limitation, any warranties or conditions of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A PARTICULAR PURPOSE. You are solely responsible for determining the appropriateness of using or redistributing the Work and assume any risks associated with Your exercise of permissions under this License.
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+8. Limitation of Liability. In no event and under no legal theory, whether in tort (including negligence), contract, or otherwise, unless required by applicable law (such as deliberate and grossly negligent acts) or agreed to in writing, shall any Contributor be liable to You for damages, including any direct, indirect, special, incidental, or consequential damages of any character arising as a result of this License or out of the use or inability to use the Work (including but not limited to damages for loss of goodwill, work stoppage, computer failure or malfunction, or any and all other commercial damages or losses), even if such Contributor has been advised of the possibility of such damages.
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+9. Accepting Warranty or Additional Liability. While redistributing the Work or Derivative Works thereof, You may choose to offer, and charge a fee for, acceptance of support, warranty, indemnity, or other liability obligations and/or rights consistent with this License. However, in accepting such obligations, You may act only on Your own behalf and on Your sole responsibility, not on behalf of any other Contributor, and only if You agree to indemnify, defend, and hold each Contributor harmless for any liability incurred by, or claims asserted against, such Contributor by reason of your accepting any such warranty or additional liability.
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+END OF TERMS AND CONDITIONS
\ No newline at end of file
diff --git a/Kieker.WebGUI/pom.xml b/Kieker.WebGUI/pom.xml
index 7be476bd..7f1069d5 100644
--- a/Kieker.WebGUI/pom.xml
+++ b/Kieker.WebGUI/pom.xml
@@ -45,6 +45,11 @@
     </repositories>
 
     <dependencies>
+        <dependency>
+            <groupId>net.vidageek</groupId>
+            <artifactId>mirror</artifactId>
+            <version>1.6.1</version>
+        </dependency>
         <dependency>
             <groupId>org.quartz-scheduler</groupId>
             <artifactId>quartz</artifactId>
diff --git a/Kieker.WebGUI/src/main/java/kieker/webgui/service/impl/util/ACManager.java b/Kieker.WebGUI/src/main/java/kieker/webgui/service/impl/util/ACManager.java
index 104db1f5..2dd6f4d3 100644
--- a/Kieker.WebGUI/src/main/java/kieker/webgui/service/impl/util/ACManager.java
+++ b/Kieker.WebGUI/src/main/java/kieker/webgui/service/impl/util/ACManager.java
@@ -224,7 +224,9 @@ public class ACManager {
 	}
 
 	public void updateDisplays(final String projectName) {
-
+		if (this.analyses.containsKey(projectName)) {
+			this.analyses.get(projectName).updateDisplays();
+		}
 	}
 
 }
diff --git a/Kieker.WebGUI/src/main/java/kieker/webgui/service/impl/util/Analysis.java b/Kieker.WebGUI/src/main/java/kieker/webgui/service/impl/util/Analysis.java
index c1fd13bd..6831593f 100644
--- a/Kieker.WebGUI/src/main/java/kieker/webgui/service/impl/util/Analysis.java
+++ b/Kieker.WebGUI/src/main/java/kieker/webgui/service/impl/util/Analysis.java
@@ -17,11 +17,12 @@
 package kieker.webgui.service.impl.util;
 
 import java.io.File;
-import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
+import java.util.HashMap;
 import java.util.Map;
-import java.util.concurrent.ConcurrentHashMap;
-import java.util.concurrent.TimeUnit;
+
+import net.vidageek.mirror.dsl.Mirror;
+import net.vidageek.mirror.exception.MirrorException;
 
 import kieker.analysis.AnalysisController;
 import kieker.common.logging.Log;
@@ -43,10 +44,12 @@ public class Analysis {
 	private static final long MAX_THREAD_WAIT_TIME_MS = 1000;
 
 	private final ClassAndMethodContainer classAndMethodContainer;
-	private final UpdateDisplaysThread updateDisplaysThread;
 	private final Object analysisController;
 	private final Object analysisControllerThread;
 
+	private final Map<String, Map<String, Object>> displayObjects = new HashMap<String, Map<String, Object>>();
+	private final Map<String, Map<String, Method>> displayMethods = new HashMap<String, Map<String, Method>>();
+
 	/**
 	 * Creates a new instance of this class using the given parameters.
 	 * 
@@ -71,8 +74,9 @@ public class Analysis {
 					controllerAndMapping, null);
 			this.analysisControllerThread = ClassAndMethodContainer.invokeConstructor(this.classAndMethodContainer.getAnalysisControllerThreadConstructor(),
 					this.analysisController);
-			this.updateDisplaysThread = new UpdateDisplaysThread(); // ClassAndMethodContainer.invokeMethod(
+			// this.updateDisplaysThread = new UpdateDisplaysThread(); // ClassAndMethodContainer.invokeMethod(
 			// this.classAndMethodContainer.getAnalysisControllerWithMappingGetMapping(), controllerAndMapping, null));
+
 			if ((this.analysisController == null) || (this.analysisControllerThread == null)) {
 				throw new AnalysisInitializationException("An error occured while instantiating the analysis.");
 			}
@@ -90,45 +94,22 @@ public class Analysis {
 	 *             If the analysis is in the wrong state to be started.
 	 */
 	public void start() throws AnalysisStateException {
-		synchronized (this) {
-			try {
-				this.classAndMethodContainer.getAnalysisControllerThreadStart().invoke(this.analysisControllerThread, new Object[0]);
-				this.updateDisplaysThread.start();
-			} catch (final IllegalThreadStateException ex) {
-				throw new AnalysisStateException("The analysis has already been started once. It has to be reinitialized to be runnable again.", ex);
-			} catch (final IllegalAccessException ex) {
-				Analysis.LOG.error("An error occured during a reflection method call.", ex);
-			} catch (final IllegalArgumentException ex) {
-				Analysis.LOG.error("An error occured during a reflection method call.", ex);
-			} catch (final InvocationTargetException ex) {
-				throw new AnalysisStateException("The analysis has already been started once. It has to be reinitialized to be runnable again.", ex);
-			}
+		try {
+			new Mirror().on(this.analysisControllerThread).invoke().method("start").withoutArgs();
+		} catch (final MirrorException ex) {
+			Analysis.LOG.error("An error occured during a reflection method call.", ex);
 		}
-
 	}
 
 	/**
 	 * Stops the analysis.
 	 */
 	public void stop() {
-		synchronized (this) {
-			try {
-				this.classAndMethodContainer.getAnalysisControllerThreadTerminate().invoke(this.analysisControllerThread, new Object[0]);
-				this.updateDisplaysThread.terminate();
-
-				this.classAndMethodContainer.getAnalysisControllerThreadJoin().invoke(this.analysisControllerThread, Analysis.MAX_THREAD_WAIT_TIME_MS,
-						TimeUnit.MILLISECONDS);
-				this.updateDisplaysThread.join(Analysis.MAX_THREAD_WAIT_TIME_MS);
-			} catch (final InterruptedException ex) {
-				// Log the exception, but don't handle it further
-				Analysis.LOG.info("An interrupted exception occured.", ex);
-			} catch (final IllegalAccessException ex) {
-				Analysis.LOG.error("An error occured during a reflection method call.", ex);
-			} catch (final IllegalArgumentException ex) {
-				Analysis.LOG.error("An error occured during a reflection method call.", ex);
-			} catch (final InvocationTargetException ex) {
-				Analysis.LOG.error("An error occured during a reflection method call.", ex);
-			}
+		try {
+			new Mirror().on(this.analysisControllerThread).invoke().method("terminate").withoutArgs();
+			new Mirror().on(this.analysisControllerThread).invoke().method("join").withArgs(Analysis.MAX_THREAD_WAIT_TIME_MS);
+		} catch (final MirrorException ex) {
+			Analysis.LOG.error("An error occured during a reflection method call.", ex);
 		}
 	}
 
@@ -138,8 +119,11 @@ public class Analysis {
 	 * @return The state.
 	 */
 	public Enum<?> getCurrentState() {
-		synchronized (this) {
-			return (Enum<?>) ClassAndMethodContainer.invokeMethod(this.classAndMethodContainer.getAnalysisControllerGetState(), this.analysisController, null);
+		try {
+			return (Enum<?>) new Mirror().on(this.analysisController).invoke().method("getState").withoutArgs();
+		} catch (final MirrorException ex) {
+			Analysis.LOG.error("An error occured during a reflection method call.", ex);
+			return null;
 		}
 	}
 
@@ -154,7 +138,8 @@ public class Analysis {
 	 * @return A display object for the given parameters.
 	 */
 	public Object getDisplay(final String viewName, final String displayName) {
-		return this.updateDisplaysThread.getDisplay(viewName, displayName);
+		// return this.updateDisplaysThread.getDisplay(viewName, displayName);
+		return null;
 	}
 
 	/**
@@ -167,96 +152,7 @@ public class Analysis {
 				AnalysisController.class.getName());
 	}
 
-	/**
-	 * This manager is responsible for the currently used and running instances of {@code AnalysisController}. It supplies methods to check the states of analysis,
-	 * instantiate, start and to stop them.
-	 * 
-	 * @author Nils Christian Ehmke
-	 * @version 1.0
-	 */
-	private static class UpdateDisplaysThread extends Thread {
-
-		private static final long SLEEP_TIME_MS = 2 * 1000;
-		// private final Object pluginMap;
-		private final Map<String, Map<String, Object>> displayObjects = new ConcurrentHashMap<String, Map<String, Object>>(); // NOPMD
-		// private final Map<Object, Method> methodMap = new ConcurrentHashMap<Object, Method>(); // NOPMD (Use of concurrent hash map)
-		private volatile boolean terminated = false;
-
-		/**
-		 * Default constructor.
-		 */
-		public UpdateDisplaysThread() {
-			// this.pluginMap = object;
-		}
-
-		/**
-		 * Delivers the correct method to be invoked for an update of the display.
-		 * 
-		 * @param clazz
-		 *            The class of the plugin.
-		 * @param displayName
-		 *            The name within the display-annotation.
-		 * @return The method instance.
-		 */
-		/*
-		 * private Method getDisplayMethod(final Class<? extends AbstractPlugin> clazz, final String displayName) {
-		 * final Method[] methods = clazz.getMethods();
-		 * for (final Method method : methods) {
-		 * try {
-		 * final Annotation displayAnnot = method.getAnnotation(Analysis.this.classAndMethodContainer.getDisplayAnnotationClass());
-		 * if ((displayAnnot != null)
-		 * && (Analysis.this.classAndMethodContainer.getDisplayNameMethod().invoke(displayAnnot, new Object[0]).equals(displayName))) {
-		 * // We found the correct method
-		 * return method;
-		 * }
-		 * } catch (final IllegalAccessException ex) {
-		 * // Log this exception, but ignore it
-		 * Analysis.LOG.info("An error occured while calling a method.", ex);
-		 * } catch (final IllegalArgumentException ex) {
-		 * // Log this exception, but ignore it
-		 * Analysis.LOG.info("An error occured while calling a method.", ex);
-		 * } catch (final InvocationTargetException ex) {
-		 * // Log this exception, but ignore it
-		 * Analysis.LOG.info("An error occured while calling a method.", ex);
-		 * }
-		 * }
-		 * return null;
-		 * }
-		 */
-
-		/**
-		 * Delivers the display object for the given view and the given display.
-		 * 
-		 * @param viewName
-		 *            The name of the view.
-		 * @param displayName
-		 *            The name of the display in the view.
-		 * @return The object for the given display if it exists, null otherwise.
-		 */
-		public Object getDisplay(final String viewName, final String displayName) {
-			return this.displayObjects.get(viewName).get(displayName);
-		}
-
-		@Override
-		public void run() {
-			// Run until we final have been interrupted
-			while (!this.terminated) {
-				// Wait a little bit.
-				try {
-					Thread.sleep(UpdateDisplaysThread.SLEEP_TIME_MS);
-				} catch (final InterruptedException ex) {
-					// We have been interrupted. Exit the thread
-					return;
-				}
-			}
+	public void updateDisplays() {
 
-		}
-
-		/**
-		 * This method makes sure that the thread terminates at the next possible point.
-		 */
-		public void terminate() {
-			this.terminated = true;
-		}
 	}
 }
-- 
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