de.viadee.bpm.vPAV.config.reader.XmlConfigReader 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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/**
 * Copyright © 2017, viadee Unternehmensberatung GmbH
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. 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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *    This product includes software developed by the viadee Unternehmensberatung GmbH.
 * 4. Neither the name of the viadee Unternehmensberatung GmbH 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  ''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  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.config.reader;

import java.io.InputStream;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import java.util.regex.Pattern;
import java.util.regex.PatternSyntaxException;

import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Unmarshaller;

import de.viadee.bpm.vPAV.RuntimeConfig;
import de.viadee.bpm.vPAV.config.model.ElementConvention;
import de.viadee.bpm.vPAV.config.model.ElementFieldTypes;
import de.viadee.bpm.vPAV.config.model.ModelConvention;
import de.viadee.bpm.vPAV.config.model.Rule;
import de.viadee.bpm.vPAV.config.model.Setting;

/**
 * Used to read the config file (ruleSet.xml) and extract the configured rules Requirements: Exisiting ruleSet.xml in
 * src/test/resources
 */
public final class XmlConfigReader implements ConfigReader {

    /**
     * @throws ConfigReaderException
     *             If file can not be found in classpath
     */
    @Override
    public Map read(final String file) throws ConfigReaderException {

        try {
            final JAXBContext jaxbContext = JAXBContext.newInstance(XmlRuleSet.class);
            final Unmarshaller jaxbUnmarshaller = jaxbContext.createUnmarshaller();

            InputStream fRuleSet = RuntimeConfig.getInstance().getClassLoader().getResourceAsStream(file);

            if (fRuleSet != null) {
                final XmlRuleSet ruleSet = (XmlRuleSet) jaxbUnmarshaller.unmarshal(fRuleSet);
                return transformFromXmlDatastructues(ruleSet);
            } else {
                throw new ConfigReaderException("ConfigFile could not be found");
            }
        } catch (JAXBException e) {
            throw new ConfigReaderException(e);
        }
    }

    /**
     * Retrieves all rules, by default deactivated
     *
     * @return rules
     */
    public Map getDeactivatedRuleSet() {
        final Map rules = new HashMap();

        for (String name : RuntimeConfig.getInstance().getViadeeRules())
            rules.put(name, new Rule(name, false, new HashMap(), new ArrayList(),
                    new ArrayList()));

        return rules;
    }

    /**
     * Transforms XmlRuleSet to rules
     *
     * @param ruleSet
     * @return rules
     * @throws ConfigReaderException
     *             If file could not be read properly
     */
    private static Map transformFromXmlDatastructues(final XmlRuleSet ruleSet)
            throws ConfigReaderException {
        final Map rules = new HashMap();

        final Collection xmlRules = ruleSet.getRules();
        for (final XmlRule rule : xmlRules) {
            final String name = rule.getName();
            if (name == null)
                throw new ConfigReaderException("rule name is not set");
            final boolean state = rule.isState();
            final Collection xmlElementConventions = rule.getElementConventions();
            final Collection elementConventions = new ArrayList();
            if (xmlElementConventions != null) {
                for (final XmlElementConvention xmlElementConvention : xmlElementConventions) {
                    final XmlElementFieldTypes xmlElementFieldTypes = xmlElementConvention
                            .getElementFieldTypes();
                    ElementFieldTypes elementFieldTypes = null;
                    if (xmlElementFieldTypes != null) {
                        elementFieldTypes = new ElementFieldTypes(xmlElementFieldTypes.getElementFieldTypes(),
                                xmlElementFieldTypes.isExcluded());
                    }
                    if (!checkRegEx(xmlElementConvention.getPattern()))
                        throw new ConfigReaderException(
                                "RegEx (" + xmlElementConvention.getPattern() + ") of " + name + " ("
                                        + xmlElementConvention.getName() + ") is incorrect");
                    elementConventions.add(new ElementConvention(xmlElementConvention.getName(),
                            elementFieldTypes, xmlElementConvention.getPattern()));
                }
            }
            final Collection xmlModelConventions = rule.getModelConventions();
            final Collection modelConventions = new ArrayList();
            if (xmlModelConventions != null) {
                for (final XmlModelConvention xmlModelConvention : xmlModelConventions) {
                    if (!checkRegEx(xmlModelConvention.getPattern()))
                        throw new ConfigReaderException(
                                "RegEx (" + xmlModelConvention.getPattern() + ") of " + name + " ("
                                        + xmlModelConvention.getName() + ") is incorrect");
                    modelConventions.add(
                            new ModelConvention(xmlModelConvention.getName(), xmlModelConvention.getPattern()));
                }
            }
            final Collection xmlSettings = rule.getSettings();
            final Map settings = new HashMap();
            if (xmlSettings != null) {
                for (final XmlSetting xmlSetting : xmlSettings) {
                    if (!settings.containsKey(xmlSetting.getName())) {
                        settings.put(xmlSetting.getName(),
                                new Setting(xmlSetting.getName(), xmlSetting.getScript(), xmlSetting.getType(),
                                        xmlSetting.getId(),
                                        xmlSetting.getValue()));
                    } else {
                        settings.get(xmlSetting.getName()).addScriptPlace(xmlSetting.getScript());
                    }
                }
            }
            rules.put(name, new Rule(name, state, settings, elementConventions, modelConventions));
        }

        return rules;
    }

    private static boolean checkRegEx(String regEx) {
        boolean correct = false;

        if (regEx.isEmpty())
            return correct;

        try {
            Pattern.compile(regEx);
            correct = true;
        } catch (PatternSyntaxException e) {
        }
        return correct;
    }
}