de.viadee.bpm.vPAV.processing.checker.MessageEventChecker 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.Message;
import org.camunda.bpm.model.bpmn.instance.MessageEventDefinition;

import java.util.ArrayList;
import java.util.Collection;

public class MessageEventChecker extends AbstractElementChecker {

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

	/**
	 * Check MessageEvents for implementation and messages
	 *
	 * @return issues
	 */
	@Override
	public Collection check(BpmnElement element) {

		final Collection issues = new ArrayList();
		final BaseElement baseElement = element.getBaseElement();

		if (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)) {

			checkEventsInSubProcess(element, issues, baseElement);
		} else if (baseElement.getElementType().getTypeName().equals(BpmnModelConstants.BPMN_ELEMENT_RECEIVE_TASK)) {

			if (baseElement.getAttributeValue(BpmnModelConstants.BPMN_ATTRIBUTE_MESSAGE_REF) == null
					|| baseElement.getAttributeValue(BpmnModelConstants.BPMN_ATTRIBUTE_MESSAGE_REF).isEmpty()) {

				issues.addAll(IssueWriter.createIssue(rule, CriticalityEnum.ERROR, element,
						String.format(Messages.getString("MessageEventChecker.0"), CheckName.checkName(baseElement)))); //$NON-NLS-1$

			} else {
				if (bpmnScanner.getMessageName(
						baseElement.getAttributeValue(BpmnModelConstants.BPMN_ATTRIBUTE_MESSAGE_REF)) == null
						|| bpmnScanner
								.getMessageName(
										baseElement.getAttributeValue(BpmnModelConstants.BPMN_ATTRIBUTE_MESSAGE_REF))
								.isEmpty()) {
					issues.addAll(IssueWriter.createIssue(rule, CriticalityEnum.ERROR, element,
							String.format(Messages.getString("MessageEventChecker.1"), //$NON-NLS-1$
									CheckName.checkName(baseElement))));
				}
			}
		} else if (baseElement.getElementType().getTypeName().equals(BpmnModelConstants.BPMN_ELEMENT_START_EVENT)) {

			// Depending on whether the startEvent is part of a subprocess, expressions may
			// be allowed to exist
			if (bpmnScanner.checkStartEvent(baseElement.getAttributeValue(BpmnModelConstants.BPMN_ATTRIBUTE_ID))) {
				checkEventsInSubProcess(element, issues, baseElement);
			} else {
				checkEventsInProcess(element, issues, baseElement);
			}
		}
		return issues;
	}

	/**
	 * Checks for existence of messages in startEvents. Expressions will create an
	 * issue due to write/read anomaly
	 *
	 * @param element
	 *            BpmnElement
	 * @param issues
	 *            Collection of CheckerIssues
	 * @param baseElement
	 *            BaseElement
	 */
	private void checkEventsInProcess(BpmnElement element, final Collection issues,
			final BaseElement baseElement) {
		final Event event = (Event) baseElement;
		final Collection messageEventDefinitions = event
				.getChildElementsByType(MessageEventDefinition.class);
		if (messageEventDefinitions != null) {
			for (MessageEventDefinition eventDef : messageEventDefinitions) {
				if (eventDef != null) {
					final Message message = eventDef.getMessage();
					if (message == null) {
						issues.addAll(IssueWriter.createIssue(rule, CriticalityEnum.ERROR, element,
								String.format(Messages.getString("MessageEventChecker.2"), //$NON-NLS-1$
										CheckName.checkName(baseElement))));
					} else {
						if (message.getName() == null || message.getName().isEmpty()) {
							issues.addAll(IssueWriter.createIssue(rule, CriticalityEnum.ERROR, element,
									String.format(Messages.getString("MessageEventChecker.3"), //$NON-NLS-1$
											CheckName.checkName(baseElement))));
						} else if (message.getName().contains("{") || message.getName().contains("}")) { //$NON-NLS-1$ //$NON-NLS-2$
							issues.addAll(IssueWriter.createIssue(rule, CriticalityEnum.ERROR, element,
									String.format(Messages.getString("MessageEventChecker.6"), //$NON-NLS-1$
											CheckName.checkName(baseElement))));
						}
					}
				}
			}
		}
	}

	/**
	 * Checks for existence of messages and expression in startEvents
	 *
	 * @param element
	 *            BpmnElement
	 * @param issues
	 *            Collection of CheckerIssues
	 * @param baseElement
	 *            BaseElement
	 */
	private void checkEventsInSubProcess(BpmnElement element, final Collection issues,
			final BaseElement baseElement) {
		final Event event = (Event) baseElement;
		final Collection messageEventDefinitions = event
				.getChildElementsByType(MessageEventDefinition.class);
		if (messageEventDefinitions != null) {
			for (MessageEventDefinition eventDef : messageEventDefinitions) {
				if (eventDef != null) {
					final Message message = eventDef.getMessage();
					if (message == null) {
						issues.addAll(IssueWriter.createIssue(rule, CriticalityEnum.ERROR, element,
								String.format(Messages.getString("MessageEventChecker.7"), //$NON-NLS-1$
										CheckName.checkName(baseElement))));
					} else {
						if (message.getName() == null || message.getName().isEmpty()) {
							issues.addAll(IssueWriter.createIssue(rule, CriticalityEnum.ERROR, element,
									String.format(Messages.getString("MessageEventChecker.8"), //$NON-NLS-1$
											CheckName.checkName(baseElement))));
						}
					}
				}
			}
		}
	}

}