Examples with UserSessionCollectionModel org.iobserve.analysis.data.UserSessionCollectionModel used on opensource projects

Example 16 with UserSessionCollectionModel

use of org.iobserve.analysis.data.UserSessionCollectionModel in project iobserve-analysis by research-iobserve.

the class ClusteringPrePostProcessing method getForEachUserGroupAnEntryCallSequenceModel.

/**
 * It creates for each cluster(user group) its own entryCallSequenceModel. For that, each
 * entryCallSequenceModel receives exclusively the user group's assigned user sessions obtained
 * via the clustering. Additionally each entryCallSequenceModel receives the user group's
 * occurrence likelihood within the considered user sessions.
 *
 * @param clusteringResults
 *            hold the assignments of the clustering and the number of clusters
 * @param callSequenceModel
 *            is the input entryCallSequenceModel that holds all user sessions
 * @return for each cluster one entryCallSequenceModel. Each contains exclusively the cluster's
 *         assigned user sessions
 */
public List<UserSessionCollectionModel> getForEachUserGroupAnEntryCallSequenceModel(final ClusteringResults clusteringResults, final UserSessionCollectionModel callSequenceModel) {
    final int numberOfClusters = clusteringResults.getNumberOfClusters();
    final int[] assignments = clusteringResults.getAssignments();
    final List<UserSessionCollectionModel> entryCallSequenceModels = new ArrayList<>(numberOfClusters);
    final double countOfAbsoluteUserSessions = callSequenceModel.getUserSessions().size();
    for (int k = 0; k < numberOfClusters; k++) {
        final List<UserSession> sessions = new ArrayList<>();
        int instanceNumber = 0;
        double countOfAssigendUserSessions = 0;
        for (final int clusterNum : assignments) {
            if (clusterNum == k) {
                sessions.add(callSequenceModel.getUserSessions().get(instanceNumber));
                countOfAssigendUserSessions++;
            }
            instanceNumber++;
        }
        if (sessions.isEmpty()) {
            continue;
        }
        final double relativeFrequencyOfUserGroup = countOfAssigendUserSessions / countOfAbsoluteUserSessions;
        entryCallSequenceModels.add(new UserSessionCollectionModel(sessions, relativeFrequencyOfUserGroup));
    }
    return entryCallSequenceModels;
}

Example 17 with UserSessionCollectionModel

use of org.iobserve.analysis.data.UserSessionCollectionModel in project iobserve-analysis by research-iobserve.

the class ClusteringPrePostProcessing method setTheWorkloadIntensityForTheEntryCallSequenceModels.

/**
 * It calculates and sets for each entryCallSequenceModel its specific workload intensity. For
 * that it calculates an open or a closed workload and adds it to its entryCallSequenceModel.
 *
 * @param entryCallSequenceModels
 *            are the entryCallSequenceModels of the detected user groups
 * @param isClosedWorkload
 *            states whether a closed or an open workload is requested by the user
 */
public void setTheWorkloadIntensityForTheEntryCallSequenceModels(final List<UserSessionCollectionModel> entryCallSequenceModels, final boolean isClosedWorkload) {
    for (final UserSessionCollectionModel entryCallSequenceModel : entryCallSequenceModels) {
        final WorkloadIntensity workloadIntensity = new WorkloadIntensity();
        if (isClosedWorkload) {
            this.calculateTheNumberOfConcurrentUsers(entryCallSequenceModel.getUserSessions(), workloadIntensity);
        } else {
            this.calculateInterarrivalTime(entryCallSequenceModel.getUserSessions(), workloadIntensity);
        }
        entryCallSequenceModel.setWorkloadIntensity(workloadIntensity);
    }
}

Example 18 with UserSessionCollectionModel

use of org.iobserve.analysis.data.UserSessionCollectionModel in project iobserve-analysis by research-iobserve.

the class SimpleLoopReferenceHelper method getModel.

/**
 * Creates a reference model that contains a loop element. Accordingly, user sessions whose call
 * sequences contain iterated calls are created.(RQ-1.3)
 *
 * @param referenceUsageModelFileName
 *            reference usage model file name
 * @param repositoryLookupModelProvider
 *            repository model provider
 * @param correspondenceModel
 *            correspondence model
 *
 * @return the reference usage model and a corresponding EntryCallSequenceModel
 * @throws IOException
 *             on error
 */
public static ReferenceElements getModel(final String referenceUsageModelFileName, final RepositoryLookupModelProvider repositoryLookupModelProvider, final CorrespondenceModel correspondenceModel) throws IOException {
    // Create a random number of user sessions and random model element parameters. The user
    // sessions' behavior will be created according to the reference usage model and
    // subsequently the user sessions are used to create a usage model. The created usage model
    // is matched against the reference usage model
    final int numberOfConcurrentUsers = TestHelper.getRandomInteger(200, 1);
    final int loopCount = TestHelper.getRandomInteger(5, 2);
    final int numberOfIteratedCalls = TestHelper.getRandomInteger(5, 1);
    final UserSessionCollectionModel entryCallSequenceModel = new UserSessionCollectionModel(TestHelper.getUserSessions(numberOfConcurrentUsers));
    final ReferenceElements referenceElements = new ReferenceElements();
    // In the following the reference usage model is created
    AbstractUserAction lastAction;
    final UsageModel usageModel = UsageModelFactory.createUsageModel();
    final UsageScenario usageScenario = UsageModelFactory.createUsageScenario("", usageModel);
    final ScenarioBehaviour scenarioBehaviour = usageScenario.getScenarioBehaviour_UsageScenario();
    final Start start = UsageModelFactory.createAddStartAction("", scenarioBehaviour);
    final Stop stop = UsageModelFactory.createAddStopAction("", scenarioBehaviour);
    // A loop is created and the loop count is set
    final Loop loop = UsageModelFactory.createLoop("", scenarioBehaviour);
    UsageModelFactory.connect(start, loop);
    final PCMRandomVariable pcmLoopIteration = CoreFactory.eINSTANCE.createPCMRandomVariable();
    pcmLoopIteration.setSpecification(String.valueOf(loopCount));
    loop.setLoopIteration_Loop(pcmLoopIteration);
    UsageModelFactory.connect(loop, stop);
    // The EntryLevelSystemCalls that are iterated are added to the loop element
    final Start loopStart = UsageModelFactory.createAddStartAction("", loop.getBodyBehaviour_Loop());
    final Stop loopStop = UsageModelFactory.createAddStopAction("", loop.getBodyBehaviour_Loop());
    lastAction = loopStart;
    // iterated calls to the loop
    for (int i = 0; i < numberOfIteratedCalls; i++) {
        if (i >= 0 && i < 5) {
            final OperationSignature operationSignature = CorrespondenceUtility.findModelElementForOperation(correspondenceModel, Repository.class, ReferenceUsageModelBuilder.CLASS_SIGNATURE[i], ReferenceUsageModelBuilder.OPERATION_SIGNATURE[i]);
            if (operationSignature != null) {
                final EntryLevelSystemCall entryLevelSystemCall = UsageModelFactory.createEntryLevelSystemCall(repositoryLookupModelProvider, operationSignature);
                UsageModelFactory.addUserAction(loop.getBodyBehaviour_Loop(), entryLevelSystemCall);
                UsageModelFactory.connect(lastAction, entryLevelSystemCall);
                lastAction = entryLevelSystemCall;
            }
        } else {
            throw new IllegalArgumentException("Illegal value of model element parameter");
        }
    }
    UsageModelFactory.connect(lastAction, loopStop);
    // According to the reference usage model user sessions are created that exactly represent
    // the user behavior of the reference usage model. The entry and exit times enable that the
    // calls within the user sessions are ordered according to the reference usage model
    int entryTime = 1;
    int exitTime = 2;
    for (int i = 0; i < entryCallSequenceModel.getUserSessions().size(); i++) {
        entryTime = 1;
        exitTime = 2;
        // number of iterated calls
        for (int k = 0; k < loopCount; k++) {
            for (int j = 0; j < numberOfIteratedCalls; j++) {
                EntryCallEvent entryCallEvent = null;
                if (j >= 0 && j < 5) {
                    entryCallEvent = new EntryCallEvent(entryTime, exitTime, ReferenceUsageModelBuilder.OPERATION_SIGNATURE[j], ReferenceUsageModelBuilder.CLASS_SIGNATURE[j], String.valueOf(i), "hostname");
                } else {
                    throw new IllegalArgumentException("Illegal value of model element parameter");
                }
                entryCallSequenceModel.getUserSessions().get(i).add(entryCallEvent, true);
                entryTime = entryTime + 2;
                exitTime = exitTime + 2;
            }
        }
    }
    // Saves the reference usage model and sets the usage model and the EntryCallSequenceModel
    // as the reference elements. Our approach is now executed with the EntryCallSequenceModel
    // and the resulting usage model can be matched against the reference usage model
    TestHelper.saveModel(usageModel, referenceUsageModelFileName);
    referenceElements.setEntryCallSequenceModel(entryCallSequenceModel);
    referenceElements.setUsageModel(usageModel);
    return referenceElements;
}

Example 19 with UserSessionCollectionModel

use of org.iobserve.analysis.data.UserSessionCollectionModel in project iobserve-analysis by research-iobserve.

the class BranchWithinBranchReference method getModel.

/**
 * It creates a reference usage model that contains nested branches. Accordingly, user sessions
 * whose call sequences differ from each other at the positions of the branches are
 * created.(RQ-1.5)
 *
 * @param referenceUsageModelFileName
 *            file name of the reference model to store its result
 * @param usageModelBuilder
 *            usage model builder
 * @param repositoryLookupModel
 *            repository model provider
 * @param correspondenceModel
 *            correspondence model
 *
 * @return a reference usage model and corresponding user sessions
 * @throws IOException
 *             on error
 */
public static ReferenceElements getModel(final String referenceUsageModelFileName, final UsageModelFactory usageModelBuilder, final RepositoryLookupModelProvider repositoryLookupModel, final CorrespondenceModel correspondenceModel) throws IOException {
    // Create a random number of user sessions and random model element parameters. The user
    // sessions' behavior will be created according to the reference usage model and
    // subsequently the user sessions are used to create a usage model. The created usage model
    // is matched against the reference usage model. The minimum number of user sessions is set
    // dependently from the random number of branch transitions, because it must be ensured that
    // each branch transition is represented within the user sessions.
    final int numberOfTransitionsOfExteriorBranch = TestHelper.getRandomInteger(3, 2);
    final int numberOfTransitionsOfInteriorBranches = TestHelper.getRandomInteger(3, 2);
    final int numberOfConcurrentUsers = TestHelper.getRandomInteger(200, 10 * numberOfTransitionsOfExteriorBranch);
    final UserSessionCollectionModel entryCallSequenceModel = new UserSessionCollectionModel(TestHelper.getUserSessions(numberOfConcurrentUsers));
    final ReferenceElements referenceElements = new ReferenceElements();
    final List<Integer> branchTransitionCounter = new ArrayList<>();
    final List<List<Integer>> listOfbranchTransitionCounterInterior = new ArrayList<>();
    BranchWithinBranchReference.createUserSessions(branchTransitionCounter, listOfbranchTransitionCounterInterior, numberOfTransitionsOfExteriorBranch, numberOfTransitionsOfInteriorBranches, entryCallSequenceModel);
    final UsageModel usageModel = BranchWithinBranchReference.createTheReferenceModel(usageModelBuilder, repositoryLookupModel, correspondenceModel, numberOfTransitionsOfExteriorBranch, numberOfTransitionsOfInteriorBranches, numberOfConcurrentUsers, branchTransitionCounter, listOfbranchTransitionCounterInterior);
    // Saves the reference usage model and sets the usage model and the EntryCallSequenceModel
    // as the reference elements. Our approach is now executed with the EntryCallSequenceModel
    // and the resulting usage model can be matched against the reference usage model
    TestHelper.saveModel(usageModel, referenceUsageModelFileName);
    referenceElements.setEntryCallSequenceModel(entryCallSequenceModel);
    referenceElements.setUsageModel(usageModel);
    return referenceElements;
}

Example 20 with UserSessionCollectionModel

use of org.iobserve.analysis.data.UserSessionCollectionModel in project iobserve-analysis by research-iobserve.

the class SimpleBranchReference method getModel.

/**
 * Creates a reference model that contains a branch element. Accordingly, user sessions whose
 * call sequences differ from each other at the position of the branch are created.(RQ-1.2)
 *
 * @param referenceModelFileName
 *            file name of the reference model to store its result
 * @param repositoryLookupModelProvider
 *            repository model provider
 * @param correspondenceModel
 *            correspondence model
 *
 * @return a reference usage model and corresponding user sessions
 * @throws IOException
 *             on error
 */
public static ReferenceElements getModel(final String referenceModelFileName, final RepositoryLookupModelProvider repositoryLookupModelProvider, final CorrespondenceModel correspondenceModel) throws IOException {
    // Create a random number of user sessions and random model element parameters. The user
    // sessions' behavior will be created according to the reference usage model and
    // subsequently the user sessions are used to create a usage model. The created usage model
    // is matched against the reference usage model. The minimum number of user sessions is set
    // dependently from the random number of branch transitions, because it must be ensured that
    // each branch transition is represented within the user sessions.
    final int numberOfBranchTransitions = TestHelper.getRandomInteger(5, 2);
    final int numberOfConcurrentUsers = TestHelper.getRandomInteger(200, 10 * numberOfBranchTransitions);
    final UserSessionCollectionModel entryCallSequenceModel = new UserSessionCollectionModel(TestHelper.getUserSessions(numberOfConcurrentUsers));
    // In the following the reference usage model is created
    final UsageModel usageModel = UsageModelFactory.createUsageModel();
    final UsageScenario usageScenario = UsageModelFactory.createUsageScenario("", usageModel);
    final ScenarioBehaviour scenarioBehaviour = usageScenario.getScenarioBehaviour_UsageScenario();
    final Start start = UsageModelFactory.createAddStartAction("", scenarioBehaviour);
    final Stop stop = UsageModelFactory.createAddStopAction("", scenarioBehaviour);
    AbstractUserAction lastAction = start;
    // Creates the branch element and the branch transitions according to the random number of
    // branch transitions
    final Branch branch = UsageModelFactory.createBranch("", scenarioBehaviour);
    UsageModelFactory.connect(start, branch);
    // the alternative call sequences
    for (int i = 0; i < numberOfBranchTransitions; i++) {
        final BranchTransition branchTransition = UsageModelFactory.createBranchTransition(branch);
        final ScenarioBehaviour branchTransitionBehaviour = branchTransition.getBranchedBehaviour_BranchTransition();
        final Start startBranchTransition = UsageModelFactory.createAddStartAction("", branchTransitionBehaviour);
        final Stop stopBranchTransition = UsageModelFactory.createAddStopAction("", branchTransitionBehaviour);
        lastAction = startBranchTransition;
        if (i >= 0 && i < 5) {
            final OperationSignature operationSignature = CorrespondenceUtility.findModelElementForOperation(correspondenceModel, Repository.class, ReferenceUsageModelBuilder.CLASS_SIGNATURE[i], ReferenceUsageModelBuilder.OPERATION_SIGNATURE[i]);
            if (operationSignature != null) {
                final EntryLevelSystemCall entryLevelSystemCall = UsageModelFactory.createEntryLevelSystemCall(repositoryLookupModelProvider, operationSignature);
                UsageModelFactory.addUserAction(branchTransitionBehaviour, entryLevelSystemCall);
                UsageModelFactory.connect(lastAction, entryLevelSystemCall);
                lastAction = entryLevelSystemCall;
            }
        } else {
            throw new IllegalArgumentException("Illegal value of model element parameter");
        }
        final OperationSignature operationSignature;
        if (i == 0) {
            operationSignature = CorrespondenceUtility.findModelElementForOperation(correspondenceModel, Repository.class, ReferenceUsageModelBuilder.CLASS_SIGNATURE[1], ReferenceUsageModelBuilder.OPERATION_SIGNATURE[1]);
        } else {
            operationSignature = CorrespondenceUtility.findModelElementForOperation(correspondenceModel, Repository.class, ReferenceUsageModelBuilder.CLASS_SIGNATURE[0], ReferenceUsageModelBuilder.OPERATION_SIGNATURE[0]);
        }
        if (operationSignature != null) {
            final EntryLevelSystemCall entryLevelSystemCall = UsageModelFactory.createEntryLevelSystemCall(repositoryLookupModelProvider, operationSignature);
            UsageModelFactory.addUserAction(branchTransitionBehaviour, entryLevelSystemCall);
            UsageModelFactory.connect(lastAction, entryLevelSystemCall);
            lastAction = entryLevelSystemCall;
        }
        UsageModelFactory.connect(lastAction, stopBranchTransition);
    }
    final OperationSignature operationSignature = CorrespondenceUtility.findModelElementForOperation(correspondenceModel, Repository.class, ReferenceUsageModelBuilder.CLASS_SIGNATURE[2], ReferenceUsageModelBuilder.OPERATION_SIGNATURE[2]);
    if (operationSignature != null) {
        final EntryLevelSystemCall entryLevelSystemCall = UsageModelFactory.createEntryLevelSystemCall(repositoryLookupModelProvider, operationSignature);
        UsageModelFactory.addUserAction(scenarioBehaviour, entryLevelSystemCall);
        UsageModelFactory.connect(branch, entryLevelSystemCall);
        lastAction = entryLevelSystemCall;
    }
    UsageModelFactory.connect(lastAction, stop);
    final List<Integer> branchTransitionCounter = SimpleBranchReference.computeBranchTransitions(entryCallSequenceModel, branch, numberOfBranchTransitions);
    // the randomly created user sessions
    for (int i = 0; i < branch.getBranchTransitions_Branch().size(); i++) {
        branch.getBranchTransitions_Branch().get(i).setBranchProbability((double) branchTransitionCounter.get(i) / numberOfConcurrentUsers);
    }
    return SimpleBranchReference.saveReferenceElements(usageModel, referenceModelFileName, entryCallSequenceModel);
}