de.viadee.bpm.vPAV.processing.checker.SignalEventChecker Maven / Gradle / Ivy

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The tool checks Camunda projects for consistency and discovers errors in process-driven applications. Called as a Maven plugin or JUnit test, it discovers esp. inconsistencies of a given BPMN model in the classpath and the sourcecode of an underlying java project, such as a delegate reference to a non-existing java class or a non-existing Spring bean.

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/**
 * BSD 3-Clause License
 *
 * Copyright © 2019, viadee Unternehmensberatung AG
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * * Redistributions of source code must retain the above copyright notice, this
 *   list of conditions and the following disclaimer.
 *
 * * Redistributions in binary form must reproduce the above copyright notice,
 *   this list of conditions and the following disclaimer in the documentation
 *   and/or other materials provided with the distribution.
 *
 * * Neither the name of the copyright holder nor the names of its
 *   contributors may be used to endorse or promote products derived from
 *   this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package de.viadee.bpm.vPAV.processing.checker;

import de.viadee.bpm.vPAV.BpmnScanner;
import de.viadee.bpm.vPAV.Messages;
import de.viadee.bpm.vPAV.config.model.Rule;
import de.viadee.bpm.vPAV.output.IssueWriter;
import de.viadee.bpm.vPAV.processing.CheckName;
import de.viadee.bpm.vPAV.processing.code.flow.BpmnElement;
import de.viadee.bpm.vPAV.processing.model.data.CheckerIssue;
import de.viadee.bpm.vPAV.processing.model.data.CriticalityEnum;
import org.camunda.bpm.model.bpmn.impl.BpmnModelConstants;
import org.camunda.bpm.model.bpmn.instance.BaseElement;
import org.camunda.bpm.model.bpmn.instance.Event;
import org.camunda.bpm.model.bpmn.instance.Signal;
import org.camunda.bpm.model.bpmn.instance.SignalEventDefinition;

import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;

public class SignalEventChecker extends AbstractElementChecker {

	private Map signalNames = new HashMap<>();

	public SignalEventChecker(Rule rule, BpmnScanner bpmnScanner) {
		super(rule, bpmnScanner);
	}

	@Override
	public Collection check(BpmnElement element) {
		final Collection issues = new ArrayList<>();
		final BaseElement baseElement = element.getBaseElement();

		if (baseElement.getElementType().getTypeName().equals(BpmnModelConstants.BPMN_ELEMENT_START_EVENT)
				|| baseElement.getElementType().getTypeName().equals(BpmnModelConstants.BPMN_ELEMENT_END_EVENT)
				|| baseElement.getElementType().getTypeName()
						.equals(BpmnModelConstants.BPMN_ELEMENT_INTERMEDIATE_CATCH_EVENT)
				|| baseElement.getElementType().getTypeName()
						.equals(BpmnModelConstants.BPMN_ELEMENT_INTERMEDIATE_THROW_EVENT)
				|| baseElement.getElementType().getTypeName().equals(BpmnModelConstants.BPMN_ELEMENT_BOUNDARY_EVENT)) {

			final Event event = (Event) baseElement;
			final Collection signalEventDefinitions = event
					.getChildElementsByType(SignalEventDefinition.class);
			if (signalEventDefinitions != null) {
				for (SignalEventDefinition eventDef : signalEventDefinitions) {
					if (eventDef != null) {
						final Signal signal = eventDef.getSignal();
						if (signal == null) {
							issues.addAll(IssueWriter.createIssue(rule, CriticalityEnum.ERROR, element,
									String.format(Messages.getString("SignalEventChecker.0"), //$NON-NLS-1$
											CheckName.checkName(baseElement))));
						} else {
							if (signal.getName() == null || signal.getName().isEmpty()) {
								issues.addAll(IssueWriter.createIssue(rule, CriticalityEnum.ERROR, element,
										String.format(Messages.getString("SignalEventChecker.1"), //$NON-NLS-1$
												CheckName.checkName(baseElement))));
							} else if (baseElement.getElementType().getTypeName()
									.equals(BpmnModelConstants.BPMN_ELEMENT_START_EVENT)) {
								issues.addAll(checkDoubleUsage(element, baseElement, signal));
							}
						}
					}
				}
			}

		}

		return issues;
	}

	/**
	 * Check for multiple usage of the same signal name
	 * 
	 * @param element Current BpmnElement
	 * @param baseElement BaseElement of BpmnElement
	 * @param signal Signal
	 * @return Issues
	 */
	private Collection checkDoubleUsage(final BpmnElement element, final BaseElement baseElement,
			final Signal signal) {

		final Collection issues = new ArrayList<>();

		if (!addSignal(baseElement, signal.getName())) {
			issues.addAll(IssueWriter.createIssue(rule, CriticalityEnum.ERROR, element,
					String.format(Messages.getString("SignalEventChecker.2"), //$NON-NLS-1$
							CheckName.checkName(baseElement), CheckName.checkName(getSignal(signal.getName())))));
		}
		return issues;
	}

	public boolean addSignal(final BaseElement baseElement, final String name) {
		if (!signalNames.containsKey(name)) {
			signalNames.put(name, baseElement);
			return true;
		} else {
			return false;
		}
	}

	public BaseElement getSignal(final String name) {
		return signalNames.get(name);
	}

	public void removeElement(final String name) {
		signalNames.remove(name);
	}

}