/*
* Copyright 2016 Red Hat, Inc. and/or its affiliates.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.optaplanner.core.impl.score.director.drools.testgen.reproducer;
import java.util.Objects;
import org.optaplanner.core.impl.score.director.drools.testgen.TestGenDroolsScoreDirector;
import org.optaplanner.core.impl.score.director.drools.testgen.TestGenKieSessionJournal;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Reproduces the exception originally thrown by Drools during a call to KIE session.
*/
public class TestGenDroolsExceptionReproducer implements TestGenOriginalProblemReproducer {
private static final Logger logger = LoggerFactory.getLogger(TestGenDroolsExceptionReproducer.class);
private final RuntimeException originalException;
private final TestGenDroolsScoreDirector<?> scoreDirector;
public TestGenDroolsExceptionReproducer(RuntimeException originalException,
TestGenDroolsScoreDirector<?> scoreDirector) {
this.originalException = originalException;
this.scoreDirector = scoreDirector;
}
@Override
public boolean isReproducible(TestGenKieSessionJournal journal) {
try {
journal.replay(scoreDirector.createKieSession());
return false;
} catch (RuntimeException reproducedException) {
if (areEqual(originalException, reproducedException)) {
return true;
} else {
if (reproducedException.getMessage() != null
&& reproducedException.getMessage().startsWith("No fact handle for ")) {
// this is common when removing insert of a fact that is later updated - not interesting
logger.debug(" Can't remove insert: {}", reproducedException.toString());
} else if (reproducedException.getMessage() != null
&& reproducedException.getMessage().startsWith("Error evaluating constraint '")) {
// this is common after pruning setup code, which can lead to NPE during rule evaluation
logger.debug(" Can't drop field setup: {}", reproducedException.toString());
} else {
logger.info("Unexpected exception", reproducedException);
}
return false;
}
}
}
@Override
public void assertReproducible(TestGenKieSessionJournal journal, String contextDescription) {
try {
journal.replay(scoreDirector.createKieSession());
throw new IllegalStateException(contextDescription + " No exception thrown.");
} catch (RuntimeException reproducedException) {
if (!areEqual(originalException, reproducedException)) {
throw new IllegalStateException(contextDescription
+ "\nExpected [" + originalException + "]"
+ "\nCaused [" + reproducedException + "]",
reproducedException);
}
}
}
private static boolean areEqual(RuntimeException originalException, RuntimeException reproducedException) {
if (!originalException.getClass().equals(reproducedException.getClass())) {
return false;
}
if (!Objects.equals(originalException.getMessage(), reproducedException.getMessage())) {
return false;
}
if (reproducedException.getStackTrace().length == 0) {
throw new IllegalStateException("Caught exception with empty stack trace => can't compare to the original. "
+ "Use '-XX:-OmitStackTraceInFastThrow' to turn off this optimization.", reproducedException);
}
// TODO check all org.drools elements?
return originalException.getStackTrace()[0].equals(reproducedException.getStackTrace()[0]);
}
@Override
public String toString() {
return originalException.toString();
}
}