| 1 | package de.uka.ipd.sdq.reliability.solver.sensitivity; |
| 2 | |
| 3 | import java.util.ArrayList; |
| 4 | import java.util.List; |
| 5 | |
| 6 | import org.eclipse.emf.common.util.BasicEList; |
| 7 | import org.eclipse.emf.common.util.EList; |
| 8 | import org.eclipse.emf.ecore.EObject; |
| 9 | |
| 10 | import de.uka.ipd.sdq.pcm.resourceenvironment.CommunicationLinkResourceSpecification; |
| 11 | import de.uka.ipd.sdq.pcm.resourceenvironment.ResourceEnvironment; |
| 12 | import de.uka.ipd.sdq.pcm.resourceenvironment.ResourceenvironmentFactory; |
| 13 | import de.uka.ipd.sdq.sensitivity.DoubleParameterVariation; |
| 14 | |
| 15 | /** |
| 16 | * Provides sensitivity support to alter the failure probabilities of all |
| 17 | * communication links within the whole PCM Resource Environment. |
| 18 | * |
| 19 | * @author brosch |
| 20 | * |
| 21 | */ |
| 22 | public class NetworkSensitivity extends MarkovSensitivity { |
| 23 | |
| 24 | /** |
| 25 | * The list of base values. |
| 26 | */ |
| 27 | private List<Double> baseValues = null; |
| 28 | |
| 29 | /** |
| 30 | * The list of affected communication link resource specifications. |
| 31 | */ |
| 32 | private List<CommunicationLinkResourceSpecification> resources = null; |
| 33 | |
| 34 | /** |
| 35 | * The constructor. |
| 36 | * |
| 37 | * @param name |
| 38 | * the name of the sensitivity analysis |
| 39 | * @param variation |
| 40 | * the parameter variation |
| 41 | */ |
| 42 | public NetworkSensitivity(final String name, |
| 43 | final DoubleParameterVariation variation) { |
| 44 | |
| 45 | // Initialize base variables: |
| 46 | super(name, variation); |
| 47 | } |
| 48 | |
| 49 | /** |
| 50 | * Alters the model according to the next sensitivity analysis step. |
| 51 | * |
| 52 | * @return indicates if the model could be successfully altered |
| 53 | */ |
| 54 | protected boolean alterModel() { |
| 55 | |
| 56 | // Set the failure probabilities: |
| 57 | for (int i = 0; i < resources.size(); i++) { |
| 58 | resources.get(i).setFailureProbability( |
| 59 | calculator.calculateCurrentDoubleValue( |
| 60 | getDoubleVariation(), getCurrentStepNumber(), |
| 61 | baseValues.get(i))); |
| 62 | } |
| 63 | |
| 64 | // Everything ok: |
| 65 | return true; |
| 66 | } |
| 67 | |
| 68 | /** |
| 69 | * Extracts the relevant sensitivity information from the given model. |
| 70 | */ |
| 71 | protected void extractSensitivityInformation() { |
| 72 | |
| 73 | // Declare result lists: |
| 74 | resources = new BasicEList<CommunicationLinkResourceSpecification>(); |
| 75 | baseValues = new ArrayList<Double>(); |
| 76 | |
| 77 | // Retrieve the PCM Resource Environment: |
| 78 | ResourceEnvironment resourceEnvironment = getModel() |
| 79 | .getResourceEnvironment(); |
| 80 | if (resourceEnvironment == null) { |
| 81 | // No resource environment found! |
| 82 | logger.error("No PCM ResourceEnvironment found."); |
| 83 | return; |
| 84 | } |
| 85 | |
| 86 | // Search for the relevant BasicComponent: |
| 87 | EList<EObject> commResources = helper.getElements(resourceEnvironment, |
| 88 | ResourceenvironmentFactory.eINSTANCE |
| 89 | .createCommunicationLinkResourceSpecification() |
| 90 | .eClass()); |
| 91 | for (EObject object : commResources) { |
| 92 | resources.add((CommunicationLinkResourceSpecification) object); |
| 93 | baseValues.add(((CommunicationLinkResourceSpecification) object) |
| 94 | .getFailureProbability()); |
| 95 | } |
| 96 | if (resources.size() == 0) { |
| 97 | logger |
| 98 | .error("Did not find any CommunicationLinkResourceSpecifications " |
| 99 | + "in the PCM ResourceEnvironment"); |
| 100 | } |
| 101 | } |
| 102 | |
| 103 | /** |
| 104 | * Builds the headings strings for logging. |
| 105 | * |
| 106 | * @return the log headings strings |
| 107 | */ |
| 108 | protected List<List<String>> getLogHeadingsMulti() { |
| 109 | |
| 110 | // Create a result list: |
| 111 | List<List<String>> resultList = new ArrayList<List<String>>(); |
| 112 | |
| 113 | // Create the headings: |
| 114 | ArrayList<String> headings = new ArrayList<String>(); |
| 115 | headings.add("Network Failure Probabilities"); |
| 116 | resultList.add(headings); |
| 117 | |
| 118 | // Return the result: |
| 119 | return resultList; |
| 120 | } |
| 121 | |
| 122 | /** |
| 123 | * Builds the results strings for sensitivity logging. |
| 124 | * |
| 125 | * @return the results strings |
| 126 | */ |
| 127 | protected List<String> getLogSingleResultsMulti() { |
| 128 | |
| 129 | // Create a result list: |
| 130 | List<String> resultList = new ArrayList<String>(); |
| 131 | |
| 132 | // Create the result strings: |
| 133 | resultList.add(calculator.getCurrentLogEntry(getDoubleVariation(), |
| 134 | getCurrentStepNumber())); |
| 135 | |
| 136 | // Return the result: |
| 137 | return resultList; |
| 138 | } |
| 139 | } |