| 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.resourceenvironment.ProcessingResourceSpecification; |
| 10 | import de.uka.ipd.sdq.pcm.resourceenvironment.ResourceContainer; |
| 11 | import de.uka.ipd.sdq.pcm.resourceenvironment.ResourceenvironmentFactory; |
| 12 | import de.uka.ipd.sdq.sensitivity.DoubleParameterVariation; |
| 13 | |
| 14 | /** |
| 15 | * This class provides rudimentary support for sensitivity analysis of a |
| 16 | * hardware resource MTTR value. |
| 17 | * |
| 18 | * @author brosch |
| 19 | * |
| 20 | */ |
| 21 | public class ResourceMTTRSensitivity extends MarkovSensitivity { |
| 22 | |
| 23 | /** |
| 24 | * The base value. |
| 25 | */ |
| 26 | private double baseValue; |
| 27 | |
| 28 | /** |
| 29 | * The resource type to alter. |
| 30 | */ |
| 31 | private String processingResourceTypeId; |
| 32 | |
| 33 | /** |
| 34 | * The resource container to alter. |
| 35 | */ |
| 36 | private String resourceContainerId; |
| 37 | |
| 38 | /** |
| 39 | * The affected processing resource specification. |
| 40 | */ |
| 41 | private ProcessingResourceSpecification specification = null; |
| 42 | |
| 43 | /** |
| 44 | * The constructor. |
| 45 | * |
| 46 | * @param name |
| 47 | * the name of the sensitivity analysis |
| 48 | * @param resourceContainerId |
| 49 | * the resource container to alter |
| 50 | * @param processingResourceTypeId |
| 51 | * the resource type to alter |
| 52 | * @param variation |
| 53 | * the parameter variation |
| 54 | */ |
| 55 | public ResourceMTTRSensitivity(final String name, |
| 56 | final String resourceContainerId, |
| 57 | final String processingResourceTypeId, |
| 58 | final DoubleParameterVariation variation) { |
| 59 | |
| 60 | // Initialize basic variables: |
| 61 | super(name, variation); |
| 62 | |
| 63 | // Further initializations: |
| 64 | this.resourceContainerId = resourceContainerId; |
| 65 | this.processingResourceTypeId = processingResourceTypeId; |
| 66 | } |
| 67 | |
| 68 | /** |
| 69 | * Alters the model according to the next sensitivity analysis step. |
| 70 | * |
| 71 | * @return indicates if the model could be successfully altered |
| 72 | */ |
| 73 | protected boolean alterModel() { |
| 74 | |
| 75 | // Check validity: |
| 76 | if (specification == null) { |
| 77 | return false; |
| 78 | } |
| 79 | |
| 80 | // Set the failure probability: |
| 81 | specification.setMTTR(calculator.calculateCurrentDoubleValue( |
| 82 | getDoubleVariation(), getCurrentStepNumber(), baseValue)); |
| 83 | |
| 84 | // Everything ok: |
| 85 | return true; |
| 86 | } |
| 87 | |
| 88 | /** |
| 89 | * Extracts the relevant sensitivity information from the given model. |
| 90 | */ |
| 91 | protected void extractSensitivityInformation() { |
| 92 | |
| 93 | // Retrieve the PCM resource environment: |
| 94 | if (getModel().getResourceEnvironment() == null) { |
| 95 | // No resource environment found! |
| 96 | logger.error("No PCM ResourceEnvironment found."); |
| 97 | return; |
| 98 | } |
| 99 | |
| 100 | // Search for the relevant resource container: |
| 101 | ResourceContainer resourceContainer = null; |
| 102 | EList<EObject> resourceContainers = helper.getElements(getModel() |
| 103 | .getResourceEnvironment(), ResourceenvironmentFactory.eINSTANCE |
| 104 | .createResourceContainer().eClass()); |
| 105 | for (EObject object : resourceContainers) { |
| 106 | if (((ResourceContainer) object).getId() |
| 107 | .equals(resourceContainerId)) { |
| 108 | resourceContainer = (ResourceContainer) object; |
| 109 | break; |
| 110 | } |
| 111 | } |
| 112 | if (resourceContainer == null) { |
| 113 | // No corresponding resource container found! |
| 114 | logger.error("Did not find any ResourceContainer with ID \"" |
| 115 | + resourceContainerId + "\""); |
| 116 | return; |
| 117 | } |
| 118 | |
| 119 | // Search for the relevant processing resource specification: |
| 120 | for (ProcessingResourceSpecification resourceSpecification : resourceContainer |
| 121 | .getActiveResourceSpecifications_ResourceContainer()) { |
| 122 | if (resourceSpecification |
| 123 | .getActiveResourceType_ActiveResourceSpecification() |
| 124 | .getId().equals(processingResourceTypeId)) { |
| 125 | specification = resourceSpecification; |
| 126 | return; |
| 127 | } |
| 128 | } |
| 129 | if (specification == null) { |
| 130 | logger |
| 131 | .error("Did not find any ProcessingResourceSpecification with ID \"" |
| 132 | + processingResourceTypeId + "\""); |
| 133 | } |
| 134 | } |
| 135 | |
| 136 | /** |
| 137 | * Builds the headings strings for logging. |
| 138 | * |
| 139 | * @return the log headings strings |
| 140 | */ |
| 141 | protected List<List<String>> getLogHeadingsMulti() { |
| 142 | |
| 143 | // Create a result list: |
| 144 | List<List<String>> resultList = new ArrayList<List<String>>(); |
| 145 | |
| 146 | // Create the headings: |
| 147 | ArrayList<String> headings = new ArrayList<String>(); |
| 148 | headings.add("Resource Container Name"); |
| 149 | headings.add("Resource Container ID"); |
| 150 | headings.add("Resource Type Name"); |
| 151 | headings.add("Resourcce Type ID"); |
| 152 | headings.add("Mean Time To Repair"); |
| 153 | resultList.add(headings); |
| 154 | |
| 155 | // Return the result: |
| 156 | return resultList; |
| 157 | } |
| 158 | |
| 159 | /** |
| 160 | * Builds the results strings for sensitivity logging. |
| 161 | * |
| 162 | * @return the results strings |
| 163 | */ |
| 164 | protected List<String> getLogSingleResultsMulti() { |
| 165 | |
| 166 | // Create a result list: |
| 167 | List<String> resultList = new ArrayList<String>(); |
| 168 | |
| 169 | // Create the result strings: |
| 170 | resultList.add(specification |
| 171 | .getResourceContainer_ProcessingResourceSpecification() |
| 172 | .getEntityName()); |
| 173 | resultList.add(resourceContainerId); |
| 174 | resultList.add(specification |
| 175 | .getActiveResourceType_ActiveResourceSpecification() |
| 176 | .getEntityName()); |
| 177 | resultList.add(processingResourceTypeId); |
| 178 | resultList.add(calculator.getCurrentLogEntry(getDoubleVariation(), |
| 179 | getCurrentStepNumber())); |
| 180 | |
| 181 | // Return the result: |
| 182 | return resultList; |
| 183 | } |
| 184 | } |