| 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.EList; |
| 7 | import org.eclipse.emf.ecore.EObject; |
| 8 | |
| 9 | import de.uka.ipd.sdq.pcm.reliability.InternalFailureOccurrenceDescription; |
| 10 | import de.uka.ipd.sdq.pcm.repository.Repository; |
| 11 | import de.uka.ipd.sdq.pcm.seff.InternalAction; |
| 12 | import de.uka.ipd.sdq.pcm.seff.SeffFactory; |
| 13 | import de.uka.ipd.sdq.sensitivity.DoubleParameterVariation; |
| 14 | |
| 15 | /** |
| 16 | * This class provides rudimentary support for sensitivity analysis of an |
| 17 | * internal action failure probability. |
| 18 | * |
| 19 | * Further refactorings required. |
| 20 | * |
| 21 | * @author brosch |
| 22 | * |
| 23 | */ |
| 24 | public class InternalActionSensitivity extends MarkovSensitivity { |
| 25 | |
| 26 | /** |
| 27 | * The base value of this sensitivity. |
| 28 | */ |
| 29 | private double baseValue; |
| 30 | |
| 31 | /** |
| 32 | * The affected internal failure occurrence description. |
| 33 | */ |
| 34 | private InternalFailureOccurrenceDescription description = null; |
| 35 | |
| 36 | /** |
| 37 | * The ID of the failure type. |
| 38 | */ |
| 39 | private String failureTypeId; |
| 40 | |
| 41 | /** |
| 42 | * The ID of the internal action to alter. |
| 43 | */ |
| 44 | private String internalActionId; |
| 45 | |
| 46 | /** |
| 47 | * The constructor. |
| 48 | * |
| 49 | * @param name |
| 50 | * the name of the sensitivity analysis |
| 51 | * @param internalActionId |
| 52 | * the id of the internal action to alter |
| 53 | * @param failureTypeId |
| 54 | * the id of the failure type to alter |
| 55 | * @param variation |
| 56 | * the parameter variation |
| 57 | */ |
| 58 | public InternalActionSensitivity(final String name, |
| 59 | final String internalActionId, final String failureTypeId, |
| 60 | final DoubleParameterVariation variation) { |
| 61 | |
| 62 | // Initialize base variables: |
| 63 | super(name, variation); |
| 64 | |
| 65 | // Further initialization: |
| 66 | this.internalActionId = internalActionId; |
| 67 | this.failureTypeId = failureTypeId; |
| 68 | } |
| 69 | |
| 70 | /** |
| 71 | * Alters the model according to the next sensitivity analysis step. |
| 72 | * |
| 73 | * @return indicates if the model could be successfully altered |
| 74 | */ |
| 75 | protected boolean alterModel() { |
| 76 | |
| 77 | // Check validity: |
| 78 | if (description == null) { |
| 79 | return false; |
| 80 | } |
| 81 | |
| 82 | // Set the failure probability: |
| 83 | description.setFailureProbability(calculator |
| 84 | .calculateCurrentDoubleValue(getDoubleVariation(), |
| 85 | getCurrentStepNumber(), baseValue)); |
| 86 | |
| 87 | // Everything ok: |
| 88 | return true; |
| 89 | } |
| 90 | |
| 91 | /** |
| 92 | * Extracts the relevant sensitivity information from the given model. |
| 93 | */ |
| 94 | protected void extractSensitivityInformation() { |
| 95 | |
| 96 | // Retrieve all FailureOccurrenceDescriptions in the PCM Repository: |
| 97 | List<Repository> repositories = getModel().getRepositories(); |
| 98 | if (repositories.size() == 0) { |
| 99 | // No repository found! |
| 100 | logger.error("No PCM Repositories found."); |
| 101 | return; |
| 102 | } |
| 103 | |
| 104 | // Search for the relevant internal action: |
| 105 | InternalAction internalAction = null; |
| 106 | for (Repository repository : repositories) { |
| 107 | EList<EObject> internalActions = helper.getElements(repository, |
| 108 | SeffFactory.eINSTANCE.createInternalAction().eClass()); |
| 109 | for (EObject action : internalActions) { |
| 110 | if (((InternalAction) action).getId().equals(internalActionId)) { |
| 111 | internalAction = (InternalAction) action; |
| 112 | break; |
| 113 | } |
| 114 | } |
| 115 | if (internalAction != null) { |
| 116 | break; |
| 117 | } |
| 118 | } |
| 119 | if (internalAction == null) { |
| 120 | // No corresponding internal action found! |
| 121 | logger.error("Did not find any InternalAction with ID \"" |
| 122 | + internalActionId + "\""); |
| 123 | return; |
| 124 | } |
| 125 | |
| 126 | // Search for the relevant failure occurrence description: |
| 127 | for (InternalFailureOccurrenceDescription occurrenceDescription : internalAction |
| 128 | .getInternalFailureOccurrenceDescriptions__InternalAction()) { |
| 129 | if (occurrenceDescription |
| 130 | .getSoftwareInducedFailureType__InternalFailureOccurrenceDescription() |
| 131 | .getId().equals(failureTypeId)) { |
| 132 | description = occurrenceDescription; |
| 133 | baseValue = occurrenceDescription.getFailureProbability(); |
| 134 | } |
| 135 | } |
| 136 | if (description == null) { |
| 137 | logger |
| 138 | .error("Did not find a FailureOccurrenceDescription for FailureType with ID \"" |
| 139 | + failureTypeId + "\""); |
| 140 | } |
| 141 | } |
| 142 | |
| 143 | /** |
| 144 | * Builds the headings strings for logging. |
| 145 | * |
| 146 | * @return the log headings strings |
| 147 | */ |
| 148 | protected List<List<String>> getLogHeadingsMulti() { |
| 149 | |
| 150 | // Create a result list: |
| 151 | List<List<String>> resultList = new ArrayList<List<String>>(); |
| 152 | |
| 153 | // Create the headings: |
| 154 | ArrayList<String> headings = new ArrayList<String>(); |
| 155 | headings.add("Internal Action Name"); |
| 156 | headings.add("Internal Action ID"); |
| 157 | headings.add("Failure Type Name"); |
| 158 | headings.add("Failure Type ID"); |
| 159 | headings.add("Failure Probability"); |
| 160 | resultList.add(headings); |
| 161 | |
| 162 | // Return the result: |
| 163 | return resultList; |
| 164 | } |
| 165 | |
| 166 | /** |
| 167 | * Builds the results strings for sensitivity logging. |
| 168 | * |
| 169 | * @return the results strings |
| 170 | */ |
| 171 | protected List<String> getLogSingleResultsMulti() { |
| 172 | |
| 173 | // Create a result list: |
| 174 | List<String> resultList = new ArrayList<String>(); |
| 175 | |
| 176 | // Create the result strings: |
| 177 | resultList.add(description |
| 178 | .getInternalAction__InternalFailureOccurrenceDescription() |
| 179 | .getEntityName()); |
| 180 | resultList.add(internalActionId); |
| 181 | resultList |
| 182 | .add(description |
| 183 | .getSoftwareInducedFailureType__InternalFailureOccurrenceDescription() |
| 184 | .getEntityName()); |
| 185 | resultList.add(failureTypeId); |
| 186 | resultList.add(calculator.getCurrentLogEntry(getDoubleVariation(), |
| 187 | getCurrentStepNumber())); |
| 188 | |
| 189 | // Return the result: |
| 190 | return resultList; |
| 191 | } |
| 192 | } |