From 411f1fe9bc20412f89ece480928dd032b3cb88ee Mon Sep 17 00:00:00 2001
From: Nikolaus Huber <nikolaus.huber@uni-wuerzburg.de>
Date: Mon, 16 Sep 2013 11:34:14 +0000
Subject: [PATCH] separated evaluation plugin
git-svn-id: https://se1.informatik.uni-wuerzburg.de/usvn/svn/code/code/DMM/trunk@13055 9e42b895-fcda-4063-8a3b-11be15eb1bbd
---
.../.classpath | 7 ++
.../.project | 28 ++++++
.../.settings/org.eclipse.jdt.core.prefs | 7 ++
.../.settings/org.eclipse.pde.core.prefs | 4 +
.../META-INF/MANIFEST.MF | 19 ++++
.../build.properties | 4 +
.../evaluation/performance/Activator.java | 30 +++++++
.../evaluation/performance/IEvaluator.java | 38 ++++++++
.../WeightingFunctionEvaluator.java | 86 +++++++++++++++++++
...erResourceEfficiencyWeightingFunction.java | 78 +++++++++++++++++
.../weightingfunction/IWeightingFunction.java | 33 +++++++
.../RandomWeightsWeightingFunction.java | 20 +++++
.../weightingfunction/WeightedSum.java | 62 +++++++++++++
.../WeightedSumWeightingFunctionHelper.java | 64 ++++++++++++++
14 files changed, 480 insertions(+)
create mode 100644 edu.kit.ipd.descartes.adaptation.evaluation.performance/.classpath
create mode 100644 edu.kit.ipd.descartes.adaptation.evaluation.performance/.project
create mode 100644 edu.kit.ipd.descartes.adaptation.evaluation.performance/.settings/org.eclipse.jdt.core.prefs
create mode 100644 edu.kit.ipd.descartes.adaptation.evaluation.performance/.settings/org.eclipse.pde.core.prefs
create mode 100644 edu.kit.ipd.descartes.adaptation.evaluation.performance/META-INF/MANIFEST.MF
create mode 100644 edu.kit.ipd.descartes.adaptation.evaluation.performance/build.properties
create mode 100644 edu.kit.ipd.descartes.adaptation.evaluation.performance/src/edu/kit/ipd/descartes/adaptation/evaluation/performance/Activator.java
create mode 100644 edu.kit.ipd.descartes.adaptation.evaluation.performance/src/edu/kit/ipd/descartes/adaptation/evaluation/performance/IEvaluator.java
create mode 100644 edu.kit.ipd.descartes.adaptation.evaluation.performance/src/edu/kit/ipd/descartes/adaptation/evaluation/performance/WeightingFunctionEvaluator.java
create mode 100644 edu.kit.ipd.descartes.adaptation.evaluation.performance/src/edu/kit/ipd/descartes/adaptation/evaluation/performance/weightingfunction/BlueYonderResourceEfficiencyWeightingFunction.java
create mode 100644 edu.kit.ipd.descartes.adaptation.evaluation.performance/src/edu/kit/ipd/descartes/adaptation/evaluation/performance/weightingfunction/IWeightingFunction.java
create mode 100644 edu.kit.ipd.descartes.adaptation.evaluation.performance/src/edu/kit/ipd/descartes/adaptation/evaluation/performance/weightingfunction/RandomWeightsWeightingFunction.java
create mode 100644 edu.kit.ipd.descartes.adaptation.evaluation.performance/src/edu/kit/ipd/descartes/adaptation/evaluation/performance/weightingfunction/WeightedSum.java
create mode 100644 edu.kit.ipd.descartes.adaptation.evaluation.performance/src/edu/kit/ipd/descartes/adaptation/evaluation/performance/weightingfunction/WeightedSumWeightingFunctionHelper.java
diff --git a/edu.kit.ipd.descartes.adaptation.evaluation.performance/.classpath b/edu.kit.ipd.descartes.adaptation.evaluation.performance/.classpath
new file mode 100644
index 00000000..ad32c83a
--- /dev/null
+++ b/edu.kit.ipd.descartes.adaptation.evaluation.performance/.classpath
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+ <classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.6"/>
+ <classpathentry kind="con" path="org.eclipse.pde.core.requiredPlugins"/>
+ <classpathentry kind="src" path="src"/>
+ <classpathentry kind="output" path="bin"/>
+</classpath>
diff --git a/edu.kit.ipd.descartes.adaptation.evaluation.performance/.project b/edu.kit.ipd.descartes.adaptation.evaluation.performance/.project
new file mode 100644
index 00000000..b2d7d932
--- /dev/null
+++ b/edu.kit.ipd.descartes.adaptation.evaluation.performance/.project
@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+ <name>edu.kit.ipd.descartes.adaptation.evaluation.performance</name>
+ <comment></comment>
+ <projects>
+ </projects>
+ <buildSpec>
+ <buildCommand>
+ <name>org.eclipse.jdt.core.javabuilder</name>
+ <arguments>
+ </arguments>
+ </buildCommand>
+ <buildCommand>
+ <name>org.eclipse.pde.ManifestBuilder</name>
+ <arguments>
+ </arguments>
+ </buildCommand>
+ <buildCommand>
+ <name>org.eclipse.pde.SchemaBuilder</name>
+ <arguments>
+ </arguments>
+ </buildCommand>
+ </buildSpec>
+ <natures>
+ <nature>org.eclipse.pde.PluginNature</nature>
+ <nature>org.eclipse.jdt.core.javanature</nature>
+ </natures>
+</projectDescription>
diff --git a/edu.kit.ipd.descartes.adaptation.evaluation.performance/.settings/org.eclipse.jdt.core.prefs b/edu.kit.ipd.descartes.adaptation.evaluation.performance/.settings/org.eclipse.jdt.core.prefs
new file mode 100644
index 00000000..c537b630
--- /dev/null
+++ b/edu.kit.ipd.descartes.adaptation.evaluation.performance/.settings/org.eclipse.jdt.core.prefs
@@ -0,0 +1,7 @@
+eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.6
+org.eclipse.jdt.core.compiler.compliance=1.6
+org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
+org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
+org.eclipse.jdt.core.compiler.source=1.6
diff --git a/edu.kit.ipd.descartes.adaptation.evaluation.performance/.settings/org.eclipse.pde.core.prefs b/edu.kit.ipd.descartes.adaptation.evaluation.performance/.settings/org.eclipse.pde.core.prefs
new file mode 100644
index 00000000..e8ff8be0
--- /dev/null
+++ b/edu.kit.ipd.descartes.adaptation.evaluation.performance/.settings/org.eclipse.pde.core.prefs
@@ -0,0 +1,4 @@
+eclipse.preferences.version=1
+pluginProject.equinox=false
+pluginProject.extensions=false
+resolve.requirebundle=false
diff --git a/edu.kit.ipd.descartes.adaptation.evaluation.performance/META-INF/MANIFEST.MF b/edu.kit.ipd.descartes.adaptation.evaluation.performance/META-INF/MANIFEST.MF
new file mode 100644
index 00000000..1bd23780
--- /dev/null
+++ b/edu.kit.ipd.descartes.adaptation.evaluation.performance/META-INF/MANIFEST.MF
@@ -0,0 +1,19 @@
+Manifest-Version: 1.0
+Bundle-ManifestVersion: 2
+Bundle-Name: PerformanceEvaluator
+Bundle-SymbolicName: edu.kit.ipd.descartes.adaptation.evaluation.performance
+Bundle-Version: 1.0.0.qualifier
+Bundle-Activator: edu.kit.ipd.descartes.adaptation.evaluation.performance.Activator
+Bundle-Vendor: Descartes Research Group
+Bundle-RequiredExecutionEnvironment: JavaSE-1.6
+Import-Package: edu.kit.ipd.descartes.core,
+ edu.kit.ipd.descartes.mm.adaptation,
+ edu.kit.ipd.descartes.perfdatarepo,
+ org.apache.log4j;version="1.2.15",
+ org.eclipse.emf.common.util,
+ org.eclipse.emf.ecore,
+ org.eclipse.emf.ecore.util,
+ org.osgi.framework;version="1.3.0"
+Export-Package: edu.kit.ipd.descartes.adaptation.evaluation.performance,
+ edu.kit.ipd.descartes.adaptation.evaluation.performance.weightingfunction
+
diff --git a/edu.kit.ipd.descartes.adaptation.evaluation.performance/build.properties b/edu.kit.ipd.descartes.adaptation.evaluation.performance/build.properties
new file mode 100644
index 00000000..34d2e4d2
--- /dev/null
+++ b/edu.kit.ipd.descartes.adaptation.evaluation.performance/build.properties
@@ -0,0 +1,4 @@
+source.. = src/
+output.. = bin/
+bin.includes = META-INF/,\
+ .
diff --git a/edu.kit.ipd.descartes.adaptation.evaluation.performance/src/edu/kit/ipd/descartes/adaptation/evaluation/performance/Activator.java b/edu.kit.ipd.descartes.adaptation.evaluation.performance/src/edu/kit/ipd/descartes/adaptation/evaluation/performance/Activator.java
new file mode 100644
index 00000000..4ef0e815
--- /dev/null
+++ b/edu.kit.ipd.descartes.adaptation.evaluation.performance/src/edu/kit/ipd/descartes/adaptation/evaluation/performance/Activator.java
@@ -0,0 +1,30 @@
+package edu.kit.ipd.descartes.adaptation.evaluation.performance;
+
+import org.osgi.framework.BundleActivator;
+import org.osgi.framework.BundleContext;
+
+public class Activator implements BundleActivator {
+
+ private static BundleContext context;
+
+ static BundleContext getContext() {
+ return context;
+ }
+
+ /*
+ * (non-Javadoc)
+ * @see org.osgi.framework.BundleActivator#start(org.osgi.framework.BundleContext)
+ */
+ public void start(BundleContext bundleContext) throws Exception {
+ Activator.context = bundleContext;
+ }
+
+ /*
+ * (non-Javadoc)
+ * @see org.osgi.framework.BundleActivator#stop(org.osgi.framework.BundleContext)
+ */
+ public void stop(BundleContext bundleContext) throws Exception {
+ Activator.context = null;
+ }
+
+}
diff --git a/edu.kit.ipd.descartes.adaptation.evaluation.performance/src/edu/kit/ipd/descartes/adaptation/evaluation/performance/IEvaluator.java b/edu.kit.ipd.descartes.adaptation.evaluation.performance/src/edu/kit/ipd/descartes/adaptation/evaluation/performance/IEvaluator.java
new file mode 100644
index 00000000..0256a89b
--- /dev/null
+++ b/edu.kit.ipd.descartes.adaptation.evaluation.performance/src/edu/kit/ipd/descartes/adaptation/evaluation/performance/IEvaluator.java
@@ -0,0 +1,38 @@
+package edu.kit.ipd.descartes.adaptation.evaluation.performance;
+
+import edu.kit.ipd.descartes.mm.adaptation.Objective;
+import edu.kit.ipd.descartes.mm.adaptation.WeightedTactic;
+
+/**
+ * Evaluates a tactic.
+ *
+ * @author nhuber
+ *
+ */
+public interface IEvaluator {
+
+ /**
+ * Evaluates the impact of a {@link WeightedTactic}.
+ *
+ * @param tactic
+ * The weighted tactic to evaluate
+ */
+ public void evaluate(WeightedTactic tactic);
+
+ /**
+ * Checks if any QoS property has degraded significantly, i.e. any {@link Objective}has been
+ * violated, after applying the tactic.
+ *
+ * @param tactic
+ * @return
+ */
+ public boolean slaViolated(WeightedTactic tactic);
+
+ /**
+ * Reduces the weight of the given tactic.
+ *
+ * @param tactic
+ */
+ public void punishTactic(WeightedTactic tactic);
+
+}
diff --git a/edu.kit.ipd.descartes.adaptation.evaluation.performance/src/edu/kit/ipd/descartes/adaptation/evaluation/performance/WeightingFunctionEvaluator.java b/edu.kit.ipd.descartes.adaptation.evaluation.performance/src/edu/kit/ipd/descartes/adaptation/evaluation/performance/WeightingFunctionEvaluator.java
new file mode 100644
index 00000000..acc3ec73
--- /dev/null
+++ b/edu.kit.ipd.descartes.adaptation.evaluation.performance/src/edu/kit/ipd/descartes/adaptation/evaluation/performance/WeightingFunctionEvaluator.java
@@ -0,0 +1,86 @@
+package edu.kit.ipd.descartes.adaptation.evaluation.performance;
+
+import org.apache.log4j.Logger;
+import org.eclipse.emf.common.util.EList;
+
+import edu.kit.ipd.descartes.adaptation.evaluation.performance.weightingfunction.IWeightingFunction;
+import edu.kit.ipd.descartes.adaptation.evaluation.performance.weightingfunction.WeightedSumWeightingFunctionHelper;
+import edu.kit.ipd.descartes.mm.adaptation.WeightedTactic;
+import edu.kit.ipd.descartes.mm.adaptation.WeightingFunction;
+import edu.kit.ipd.descartes.perfdatarepo.Impact;
+import edu.kit.ipd.descartes.perfdatarepo.MetricValue;
+import edu.kit.ipd.descartes.perfdatarepo.Result;
+
+/**
+ * Evaluates a given {@link WeightedTactic} using the weighted tactic's {@link WeightingFunction}.
+ *
+ * @author nhuber
+ *
+ */
+public class WeightingFunctionEvaluator implements IEvaluator {
+
+ private static final String RESPONSETIME_IDENTIFIER = "ResponseTime";
+ private IWeightingFunction calculator = null;
+ private static Logger logger = Logger.getLogger(WeightingFunctionEvaluator.class);
+
+ /*
+ * (non-Javadoc)
+ *
+ * @see edu.kit.ipd.descartes.adaptation.evaluation.IEvaluator#evaluate()
+ */
+ @Override
+ public void evaluate(WeightedTactic tactic) {
+ WeightingFunction f = tactic.getParentStrategy().getWeightingFunction();
+
+ final String functionClassName = f.getWeightingFunctionImplementation();
+
+ Object o = null;
+ try {
+ o = Class.forName(functionClassName).newInstance();
+ } catch (final ClassNotFoundException e) {
+ e.printStackTrace();
+ } catch (final InstantiationException e) {
+ e.printStackTrace();
+ } catch (final IllegalAccessException e) {
+ e.printStackTrace();
+ }
+
+ if (!IWeightingFunction.class.isInstance(o)) {
+ throw new RuntimeException("Expected a class implementing " + IWeightingFunction.class.getName());
+ }
+
+ calculator = (IWeightingFunction) o;
+ calculator.setWeightingFunction(f);
+ double newWeight = calculator.calculateWeight(tactic);
+ logger.debug("Setting new weight of " + tactic.getName() + " to " + newWeight);
+ tactic.setCurrentWeight(newWeight);
+ }
+
+ public boolean slaViolated(WeightedTactic tactic) {
+ Impact impact = tactic.getLastImpact();
+ Result before = impact.getBefore();
+ Result after = impact.getAfter();
+ EList<MetricValue> afterMetricValues = after.getMetricValues();
+
+ for (MetricValue afterMetricValue : afterMetricValues) {
+ // calculated delta=(after-before)
+ double afterValue = afterMetricValue.getValue();
+ double beforeValue = WeightedSumWeightingFunctionHelper.getValueForMetricType(
+ afterMetricValue.getMetricType(), before);
+
+ if (afterMetricValue.getMetricType().getName().contains(RESPONSETIME_IDENTIFIER)
+ && afterValue > beforeValue) {
+ return true;
+ }
+ }
+
+ return false;
+ }
+
+ @Override
+ public void punishTactic(WeightedTactic tactic) {
+ double weight = 0.0;
+ logger.info("Punishing tactic, setting weight to " + weight);
+ tactic.setCurrentWeight(weight);
+ }
+}
diff --git a/edu.kit.ipd.descartes.adaptation.evaluation.performance/src/edu/kit/ipd/descartes/adaptation/evaluation/performance/weightingfunction/BlueYonderResourceEfficiencyWeightingFunction.java b/edu.kit.ipd.descartes.adaptation.evaluation.performance/src/edu/kit/ipd/descartes/adaptation/evaluation/performance/weightingfunction/BlueYonderResourceEfficiencyWeightingFunction.java
new file mode 100644
index 00000000..ffa32232
--- /dev/null
+++ b/edu.kit.ipd.descartes.adaptation.evaluation.performance/src/edu/kit/ipd/descartes/adaptation/evaluation/performance/weightingfunction/BlueYonderResourceEfficiencyWeightingFunction.java
@@ -0,0 +1,78 @@
+package edu.kit.ipd.descartes.adaptation.evaluation.performance.weightingfunction;
+
+import org.apache.log4j.Logger;
+
+import edu.kit.ipd.descartes.mm.adaptation.WeightedMetric;
+import edu.kit.ipd.descartes.mm.adaptation.WeightedTactic;
+import edu.kit.ipd.descartes.mm.adaptation.WeightingFunction;
+import edu.kit.ipd.descartes.perfdatarepo.Impact;
+import edu.kit.ipd.descartes.perfdatarepo.MetricValue;
+import edu.kit.ipd.descartes.perfdatarepo.Result;
+
+public class BlueYonderResourceEfficiencyWeightingFunction implements IWeightingFunction {
+
+ private static final String UTIL_IDENTIFIER = "Util";
+ private static final double THRESHOLD = 0.05;
+ private WeightingFunction function = null;
+ private static Logger logger = Logger.getLogger(BlueYonderResourceEfficiencyWeightingFunction.class);
+
+// public BlueYonderResourceEfficiencyWeightingFunction() {
+// AbstractEcoreModelLoader loader = PerformanceDataRepositoryModelLoader.getInstance();
+// String pdrLocation = loader.getCurrentModelUri().toFileString();
+// logger.debug("Initializing query engine adaptor for performance data repository " + pdrLocation);
+// qea = new QueryEngineAdapter(pdrLocation);
+// }
+
+ @Override
+ public void setWeightingFunction(WeightingFunction function) {
+ this.function = function;
+ }
+
+ @Override
+ /*
+ * (non-Javadoc)
+ *
+ * @see
+ * edu.kit.ipd.descartes.adaptation.evaluation.performance.weightingfunction.IWeightingFunction#calculateWeight
+ * (edu.kit.ipd.descartes.mm.adaptation.WeightedTactic)
+ */
+ public double calculateWeight(WeightedTactic weightedTactic) {
+ double newWeight = 0.0;
+ Impact impact = weightedTactic.getLastImpact();
+ Result before = impact.getBefore();
+ Result after = impact.getAfter();
+
+ for (WeightedMetric wm : function.getWeightedMetrics()) {
+ double afterValue = WeightedSumWeightingFunctionHelper.getValueForMetricType(wm.getMetricType(), after);
+ double beforeValue = WeightedSumWeightingFunctionHelper.getValueForMetricType(wm.getMetricType(), before);
+ double delta = afterValue - beforeValue;
+ newWeight += delta * wm.getWeight();
+ }
+
+ int activeResourceDelta = calcActiveResourceDelta(impact);
+ logger.debug("Delta of active resources: " + activeResourceDelta);
+ // TODO: Implement something more sophisticated
+ newWeight = activeResourceDelta;
+
+ return newWeight;
+ }
+
+ private int calcActiveResourceDelta(Impact impact) {
+ Result before = impact.getBefore();
+ Result after = impact.getAfter();
+ int activeResourcesBefore = getActiveResources(before);
+ int activeResourcesAfter = getActiveResources(after);
+ return activeResourcesAfter - activeResourcesBefore;
+ }
+
+ private int getActiveResources(Result result) {
+ int counter = 0;
+ for (MetricValue v : result.getMetricValues()) {
+ // TODO parse with regexp or something more clever
+ if (v.getMetricType().getName().contains(UTIL_IDENTIFIER) && v.getValue() > THRESHOLD)
+ counter++;
+ }
+ return counter;
+ }
+
+}
diff --git a/edu.kit.ipd.descartes.adaptation.evaluation.performance/src/edu/kit/ipd/descartes/adaptation/evaluation/performance/weightingfunction/IWeightingFunction.java b/edu.kit.ipd.descartes.adaptation.evaluation.performance/src/edu/kit/ipd/descartes/adaptation/evaluation/performance/weightingfunction/IWeightingFunction.java
new file mode 100644
index 00000000..70ebe7f5
--- /dev/null
+++ b/edu.kit.ipd.descartes.adaptation.evaluation.performance/src/edu/kit/ipd/descartes/adaptation/evaluation/performance/weightingfunction/IWeightingFunction.java
@@ -0,0 +1,33 @@
+package edu.kit.ipd.descartes.adaptation.evaluation.performance.weightingfunction;
+
+import edu.kit.ipd.descartes.mm.adaptation.Tactic;
+import edu.kit.ipd.descartes.mm.adaptation.WeightedMetric;
+import edu.kit.ipd.descartes.mm.adaptation.WeightedTactic;
+import edu.kit.ipd.descartes.mm.adaptation.WeightingFunction;
+
+/**
+ * @author nhuber
+ *
+ */
+public interface IWeightingFunction {
+
+
+ /**
+ * Sets the {@link WeightingFunction} that can be used
+ * by the {@link WeightingFunction} to derive the
+ * {@link WeightedMetric}s used to calculate the weight.
+ *
+ * @param function
+ */
+ void setWeightingFunction(WeightingFunction function);
+
+ /**
+ * Calculates the new weight of the given {@link Tactic}.
+ *
+ * @param impact
+ * @return
+ */
+ double calculateWeight(WeightedTactic weightedTactic);
+
+
+}
diff --git a/edu.kit.ipd.descartes.adaptation.evaluation.performance/src/edu/kit/ipd/descartes/adaptation/evaluation/performance/weightingfunction/RandomWeightsWeightingFunction.java b/edu.kit.ipd.descartes.adaptation.evaluation.performance/src/edu/kit/ipd/descartes/adaptation/evaluation/performance/weightingfunction/RandomWeightsWeightingFunction.java
new file mode 100644
index 00000000..6f2ccb37
--- /dev/null
+++ b/edu.kit.ipd.descartes.adaptation.evaluation.performance/src/edu/kit/ipd/descartes/adaptation/evaluation/performance/weightingfunction/RandomWeightsWeightingFunction.java
@@ -0,0 +1,20 @@
+package edu.kit.ipd.descartes.adaptation.evaluation.performance.weightingfunction;
+
+import java.util.Random;
+
+import edu.kit.ipd.descartes.mm.adaptation.WeightedTactic;
+import edu.kit.ipd.descartes.mm.adaptation.WeightingFunction;
+
+public class RandomWeightsWeightingFunction implements IWeightingFunction {
+
+ @Override
+ public double calculateWeight(WeightedTactic weightedTactic) {
+ Random r = new Random(System.currentTimeMillis());
+ return r.nextDouble();
+ }
+
+ @Override
+ public void setWeightingFunction(WeightingFunction function) {
+ // Left empty intentionally
+ }
+}
diff --git a/edu.kit.ipd.descartes.adaptation.evaluation.performance/src/edu/kit/ipd/descartes/adaptation/evaluation/performance/weightingfunction/WeightedSum.java b/edu.kit.ipd.descartes.adaptation.evaluation.performance/src/edu/kit/ipd/descartes/adaptation/evaluation/performance/weightingfunction/WeightedSum.java
new file mode 100644
index 00000000..becd9b28
--- /dev/null
+++ b/edu.kit.ipd.descartes.adaptation.evaluation.performance/src/edu/kit/ipd/descartes/adaptation/evaluation/performance/weightingfunction/WeightedSum.java
@@ -0,0 +1,62 @@
+package edu.kit.ipd.descartes.adaptation.evaluation.performance.weightingfunction;
+
+import org.apache.log4j.Logger;
+import org.eclipse.emf.common.util.EList;
+
+import edu.kit.ipd.descartes.mm.adaptation.WeightedTactic;
+import edu.kit.ipd.descartes.mm.adaptation.WeightingFunction;
+import edu.kit.ipd.descartes.perfdatarepo.Impact;
+import edu.kit.ipd.descartes.perfdatarepo.MetricValue;
+import edu.kit.ipd.descartes.perfdatarepo.Result;
+
+public class WeightedSum implements IWeightingFunction {
+
+ private Logger logger = Logger.getLogger(WeightedSum.class);
+ private WeightingFunction weightingFunction = null;
+
+ public WeightedSum() {
+ }
+
+ public WeightingFunction getWeightingFunction() {
+ return weightingFunction;
+ }
+
+ @Override
+ public void setWeightingFunction(WeightingFunction weightingFunction) {
+ this.weightingFunction = weightingFunction;
+ }
+
+ @Override
+ public double calculateWeight(WeightedTactic weightedtactic) {
+
+ double newWeight = 0.0;
+ Impact impact = weightedtactic.getLastImpact();
+ Result before = impact.getBefore();
+ Result after = impact.getAfter();
+ EList<MetricValue> afterMetricValues = after.getMetricValues();
+
+ for (MetricValue afterMetricValue : afterMetricValues) {
+ // calculated delta=(after-before)
+ double afterValue = afterMetricValue.getValue();
+ double beforeValue = WeightedSumWeightingFunctionHelper
+ .getValueForMetricType(afterMetricValue.getMetricType(), before);
+ double delta = afterValue - beforeValue;
+
+ // get the corresponding weight
+ double weightOfMetric = WeightedSumWeightingFunctionHelper.getWeightForMetricType(weightingFunction,
+ afterMetricValue.getMetricType());
+
+ if (Double.isNaN(weightOfMetric))
+ logger.debug("WeightingFunction "+ weightingFunction.getName()+" has no weight specified for metric type " + afterMetricValue.getMetricType().getName() + ". Skipping...");
+ else {
+ // add it
+ newWeight += weightOfMetric * delta;
+ logger.debug("Delta for metric type " + afterMetricValue.getMetricType().getName() + " was: " + delta
+ + " and weight is " + weightOfMetric);
+ }
+ }
+
+ return newWeight;
+ }
+
+}
diff --git a/edu.kit.ipd.descartes.adaptation.evaluation.performance/src/edu/kit/ipd/descartes/adaptation/evaluation/performance/weightingfunction/WeightedSumWeightingFunctionHelper.java b/edu.kit.ipd.descartes.adaptation.evaluation.performance/src/edu/kit/ipd/descartes/adaptation/evaluation/performance/weightingfunction/WeightedSumWeightingFunctionHelper.java
new file mode 100644
index 00000000..83236bf1
--- /dev/null
+++ b/edu.kit.ipd.descartes.adaptation.evaluation.performance/src/edu/kit/ipd/descartes/adaptation/evaluation/performance/weightingfunction/WeightedSumWeightingFunctionHelper.java
@@ -0,0 +1,64 @@
+package edu.kit.ipd.descartes.adaptation.evaluation.performance.weightingfunction;
+
+import org.apache.log4j.Logger;
+import org.eclipse.emf.common.util.EList;
+import org.eclipse.emf.ecore.util.EcoreUtil;
+
+import edu.kit.ipd.descartes.mm.adaptation.WeightedMetric;
+import edu.kit.ipd.descartes.mm.adaptation.WeightingFunction;
+import edu.kit.ipd.descartes.perfdatarepo.MetricType;
+import edu.kit.ipd.descartes.perfdatarepo.MetricValue;
+import edu.kit.ipd.descartes.perfdatarepo.Result;
+
+public class WeightedSumWeightingFunctionHelper {
+
+ static Logger logger = Logger.getLogger(WeightedSumWeightingFunctionHelper.class);
+
+ /**
+ *
+ * @param function
+ * @param metricType
+ * @return Returns the weight of the {@code meticType} of the given {@code function}.<br>
+ * Returns {@code Double.NaN} if the {@code metricType} was not found.
+ */
+ public static double getWeightForMetricType(WeightingFunction function, MetricType metricType) {
+ EList<WeightedMetric> weightedMetrics = function.getWeightedMetrics();
+
+ for (WeightedMetric weightedMetric : weightedMetrics) {
+ if (EcoreUtil.equals(weightedMetric.getMetricType(), metricType))
+ return weightedMetric.getWeight();
+ else if (weightedMetric.getMetricType().getName().equals(metricType.getName())) {
+ logger.debug("Could not find identical metric, using matching name instead");
+ return weightedMetric.getWeight();
+ }
+ }
+
+ return Double.NaN;
+ }
+
+ /**
+ * Searches the {@link MetricValue} of the given {@link MetricType} in the {@link Result}
+ * <code>resultBefore</code>
+ *
+ * @param metricType
+ * The type of the metric to find
+ * @param result
+ * The result to search
+ * @return
+ */
+ public static double getValueForMetricType(MetricType metricType, Result result) {
+ EList<MetricValue> metricValues = result.getMetricValues();
+
+ for (MetricValue metricValue : metricValues) {
+ if (sameMetricType(metricValue, metricType))
+ return metricValue.getValue();
+ }
+ return Double.NaN;
+ }
+
+ public static boolean sameMetricType(MetricValue metricValue, MetricType metricType) {
+// return metricValue.getMetricType().equals(metricType);
+ return (metricValue.getMetricType().getName().equals(metricType.getName()));
+// && metricValue.getMetricType().getId().equals(metricType.getId()));
+ }
+}
--
GitLab