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package hu.bme.mit.inf.dslreasoner.viatrasolver.reasoner
import com.google.common.collect.ImmutableList
import com.google.common.collect.Lists
import hu.bme.mit.inf.dslreasoner.logic.model.builder.DocumentationLevel
import hu.bme.mit.inf.dslreasoner.logic.model.builder.LogicReasoner
import hu.bme.mit.inf.dslreasoner.logic.model.builder.LogicReasonerException
import hu.bme.mit.inf.dslreasoner.logic.model.builder.LogicSolverConfiguration
import hu.bme.mit.inf.dslreasoner.logic.model.logiclanguage.LogiclanguagePackage
import hu.bme.mit.inf.dslreasoner.logic.model.logicproblem.LogicProblem
import hu.bme.mit.inf.dslreasoner.logic.model.logicproblem.LogicproblemPackage
import hu.bme.mit.inf.dslreasoner.logic.model.logicresult.LogicresultFactory
import hu.bme.mit.inf.dslreasoner.logic.model.logicresult.ModelResult
import hu.bme.mit.inf.dslreasoner.viatrasolver.logic2viatra.ModelGenerationMethodProvider
import hu.bme.mit.inf.dslreasoner.viatrasolver.partialinterpretationlanguage.PartialInterpretationInitialiser
import hu.bme.mit.inf.dslreasoner.viatrasolver.partialinterpretationlanguage.partialinterpretation.PartialInterpretation
import hu.bme.mit.inf.dslreasoner.viatrasolver.partialinterpretationlanguage.partialinterpretation.PartialinterpretationPackage
import hu.bme.mit.inf.dslreasoner.viatrasolver.partialinterpretationlanguage.statecoder.AbstractNeighbourhoodBasedStateCoderFactory
import hu.bme.mit.inf.dslreasoner.viatrasolver.partialinterpretationlanguage.statecoder.IdentifierBasedStateCoderFactory
import hu.bme.mit.inf.dslreasoner.viatrasolver.partialinterpretationlanguage.statecoder.PairwiseNeighbourhoodBasedStateCoderFactory
import hu.bme.mit.inf.dslreasoner.viatrasolver.reasoner.dse.BestFirstStrategyForModelGeneration
import hu.bme.mit.inf.dslreasoner.viatrasolver.reasoner.dse.DiversityChecker
import hu.bme.mit.inf.dslreasoner.viatrasolver.reasoner.dse.InconsistentScopeGlobalConstraint
import hu.bme.mit.inf.dslreasoner.viatrasolver.reasoner.dse.LoggerSolutionFoundHandler
import hu.bme.mit.inf.dslreasoner.viatrasolver.reasoner.dse.ModelGenerationCompositeObjective
import hu.bme.mit.inf.dslreasoner.viatrasolver.reasoner.dse.PartialModelAsLogicInterpretation
import hu.bme.mit.inf.dslreasoner.viatrasolver.reasoner.dse.ScopeObjective
import hu.bme.mit.inf.dslreasoner.viatrasolver.reasoner.dse.SurelyViolatedObjectiveGlobalConstraint
import hu.bme.mit.inf.dslreasoner.viatrasolver.reasoner.dse.UnfinishedMultiplicityObjective
import hu.bme.mit.inf.dslreasoner.viatrasolver.reasoner.dse.ViatraReasonerSolutionSaver
import hu.bme.mit.inf.dslreasoner.viatrasolver.reasoner.dse.WF2ObjectiveConverter
import hu.bme.mit.inf.dslreasoner.viatrasolver.reasoner.optimization.ThreeValuedCostElement
import hu.bme.mit.inf.dslreasoner.viatrasolver.reasoner.optimization.ThreeValuedCostObjective
import hu.bme.mit.inf.dslreasoner.workspace.ReasonerWorkspace
import java.util.List
import java.util.Map
import org.eclipse.emf.ecore.EObject
import org.eclipse.viatra.dse.api.DesignSpaceExplorer
import org.eclipse.viatra.dse.api.DesignSpaceExplorer.DseLoggingLevel
import org.eclipse.viatra.dse.solutionstore.SolutionStore
import org.eclipse.viatra.dse.statecode.IStateCoderFactory
class ViatraReasoner extends LogicReasoner {
val PartialInterpretationInitialiser initialiser = new PartialInterpretationInitialiser()
val ModelGenerationMethodProvider modelGenerationMethodProvider = new ModelGenerationMethodProvider
val extension LogicresultFactory factory = LogicresultFactory.eINSTANCE
val WF2ObjectiveConverter wf2ObjectiveConverter = new WF2ObjectiveConverter
override solve(LogicProblem problem, LogicSolverConfiguration configuration,
ReasonerWorkspace workspace) throws LogicReasonerException {
val viatraConfig = configuration.asConfig
if (viatraConfig.documentationLevel == DocumentationLevel.FULL) {
DesignSpaceExplorer.turnOnLogging(DseLoggingLevel.VERBOSE_FULL)
} else {
DesignSpaceExplorer.turnOnLogging(DseLoggingLevel.WARN)
}
val DesignSpaceExplorer dse = new DesignSpaceExplorer();
dse.addMetaModelPackage(LogiclanguagePackage.eINSTANCE)
dse.addMetaModelPackage(LogicproblemPackage.eINSTANCE)
dse.addMetaModelPackage(PartialinterpretationPackage.eINSTANCE)
val transformationStartTime = System.nanoTime
val emptySolution = initialiser.initialisePartialInterpretation(problem, viatraConfig.typeScopes).output
if ((viatraConfig.documentationLevel == DocumentationLevel::FULL ||
viatraConfig.documentationLevel == DocumentationLevel::NORMAL) && workspace !== null) {
workspace.writeModel(emptySolution, "init.partialmodel")
}
emptySolution.problemConainer = problem
val method = modelGenerationMethodProvider.createModelGenerationMethod(
problem,
emptySolution,
workspace,
viatraConfig.nameNewElements,
viatraConfig.typeInferenceMethod,
viatraConfig.scopePropagatorStrategy,
viatraConfig.documentationLevel
)
dse.addObjective(new ModelGenerationCompositeObjective(
new ScopeObjective,
method.unfinishedMultiplicities.map[new UnfinishedMultiplicityObjective(it)],
wf2ObjectiveConverter.createCompletenessObjective(method.unfinishedWF)
))
val extremalObjectives = Lists.newArrayListWithExpectedSize(viatraConfig.costObjectives.size)
for (entry : viatraConfig.costObjectives.indexed) {
val objectiveName = '''costObjective«entry.key»'''
val objectiveConfig = entry.value
val elementsBuilder = ImmutableList.builder
for (elementConfig : objectiveConfig.elements) {
val relationName = elementConfig.patternQualifiedName
val modalQueries = method.modalRelationQueries.get(relationName)
if (modalQueries === null) {
throw new IllegalArgumentException("Unknown relation: " + relationName)
}
elementsBuilder.add(new ThreeValuedCostElement(
modalQueries.currentQuery,
modalQueries.mayQuery,
modalQueries.mustQuery,
elementConfig.weight
))
}
val costElements = elementsBuilder.build
val costObjective = new ThreeValuedCostObjective(objectiveName, costElements, objectiveConfig.kind,
objectiveConfig.threshold, 3)
dse.addObjective(costObjective)
if (objectiveConfig.findExtremum) {
extremalObjectives += costObjective
}
}
val numberOfRequiredSolutions = configuration.solutionScope.numberOfRequiredSolutions
val solutionStore = if (extremalObjectives.empty) {
new SolutionStore(numberOfRequiredSolutions)
} else {
new SolutionStore()
}
solutionStore.registerSolutionFoundHandler(new LoggerSolutionFoundHandler(viatraConfig))
val diversityChecker = DiversityChecker.of(viatraConfig.diversityRequirement)
val solutionSaver = new ViatraReasonerSolutionSaver(newArrayList(extremalObjectives), numberOfRequiredSolutions,
diversityChecker)
val solutionCopier = solutionSaver.solutionCopier
solutionStore.withSolutionSaver(solutionSaver)
dse.solutionStore = solutionStore
dse.addGlobalConstraint(wf2ObjectiveConverter.createInvalidationGlobalConstraint(method.invalidWF))
dse.addGlobalConstraint(new SurelyViolatedObjectiveGlobalConstraint(solutionSaver))
dse.addGlobalConstraint(new InconsistentScopeGlobalConstraint)
for (additionalConstraint : viatraConfig.searchSpaceConstraints.additionalGlobalConstraints) {
dse.addGlobalConstraint(additionalConstraint.apply(method))
}
dse.setInitialModel(emptySolution, false)
val IStateCoderFactory statecoder = if (viatraConfig.stateCoderStrategy == StateCoderStrategy.Neighbourhood) {
new PairwiseNeighbourhoodBasedStateCoderFactory
} else {
new IdentifierBasedStateCoderFactory
}
dse.stateCoderFactory = statecoder
dse.maxNumberOfThreads = 1
for (rule : method.relationRefinementRules) {
dse.addTransformationRule(rule)
}
for (rule : method.objectRefinementRules) {
dse.addTransformationRule(rule)
}
val strategy = new BestFirstStrategyForModelGeneration(workspace, viatraConfig, method)
viatraConfig.progressMonitor.workedForwardTransformation
val transformationTime = System.nanoTime - transformationStartTime
val solverStartTime = System.nanoTime
var boolean stoppedByTimeout
try {
stoppedByTimeout = dse.startExplorationWithTimeout(strategy, configuration.runtimeLimit * 1000);
} catch (NullPointerException npe) {
stoppedByTimeout = false
}
val solverTime = System.nanoTime - solverStartTime
viatraConfig.progressMonitor.workedSearchFinished
// additionalMatches = strategy.solutionStoreWithCopy.additionalMatches
val statistics = createStatistics => [
// it.solverTime = viatraConfig.runtimeLimit
it.solverTime = (solverTime / 1000000) as int
it.transformationTime = (transformationTime / 1000000) as int
for (pair : solutionCopier.getAllCopierRuntimes(true).indexed) {
it.entries += createIntStatisticEntry => [
it.name = '''_Solution«pair.key»FoundAt'''
it.value = (pair.value / 1000000) as int
]
}
it.entries += createIntStatisticEntry => [
it.name = "TransformationExecutionTime"
it.value = (method.statistics.transformationExecutionTime / 1000000) as int
]
it.entries += createIntStatisticEntry => [
it.name = "TypeAnalysisTime"
it.value = (method.statistics.PreliminaryTypeAnalisisTime / 1000000) as int
]
it.entries += createIntStatisticEntry => [
it.name = "StateCoderTime"
it.value = (statecoder.runtime / 1000000) as int
]
it.entries += createIntStatisticEntry => [
it.name = "StateCoderFailCount"
it.value = strategy.numberOfStatecoderFail
]
it.entries += createIntStatisticEntry => [
it.name = "SolutionCopyTime"
it.value = (solutionCopier.getTotalCopierRuntime / 1000000) as int
]
if (diversityChecker.isActive) {
it.entries += createIntStatisticEntry => [
it.name = "SolutionDiversityCheckTime"
it.value = (diversityChecker.totalRuntime / 1000000) as int
]
it.entries += createRealStatisticEntry => [
it.name = "SolutionDiversitySuccessRate"
it.value = diversityChecker.successRate
]
}
]
viatraConfig.progressMonitor.workedBackwardTransformationFinished
if (stoppedByTimeout) {
return createInsuficientResourcesResult => [
it.problem = problem
it.resourceName = "time"
it.representation += solutionCopier.getPartialInterpretations(true)
it.statistics = statistics
]
} else {
if (solutionStore.solutions.empty) {
return createInconsistencyResult => [
it.problem = problem
it.representation += solutionCopier.getPartialInterpretations(true)
it.statistics = statistics
]
} else {
return createModelResult => [
it.problem = problem
it.trace = solutionCopier.getTraces(true)
it.representation += solutionCopier.getPartialInterpretations(true)
it.statistics = statistics
]
}
}
}
private def dispatch long runtime(AbstractNeighbourhoodBasedStateCoderFactory sc) {
sc.sumStatecoderRuntime
}
private def dispatch long runtime(IdentifierBasedStateCoderFactory sc) {
sc.sumStatecoderRuntime
}
override getInterpretations(ModelResult modelResult) {
val indexes = 0 ..< modelResult.representation.size
val traces = modelResult.trace as List<Map<EObject, EObject>>;
val res = indexes.map [ i |
new PartialModelAsLogicInterpretation(modelResult.representation.get(i) as PartialInterpretation,
traces.get(i))
].toList
return res
}
private def ViatraReasonerConfiguration asConfig(LogicSolverConfiguration configuration) {
if (configuration instanceof ViatraReasonerConfiguration) {
return configuration
} else
throw new IllegalArgumentException('''Wrong configuration. Expected: «ViatraReasonerConfiguration.name», but got: «configuration.class.name»"''')
}
}
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