de.viadee.bpm.vPAV.output.JsonOutputWriter 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 © 2018, 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:
 *
 * * 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.output;

import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.nio.charset.StandardCharsets;
import java.util.Collection;
import java.util.List;

import com.google.gson.GsonBuilder;
import com.google.gson.JsonArray;
import com.google.gson.JsonObject;

import de.viadee.bpm.vPAV.constants.BpmnConstants;
import de.viadee.bpm.vPAV.constants.ConfigConstants;
import de.viadee.bpm.vPAV.processing.model.data.BpmnElement;
import de.viadee.bpm.vPAV.processing.model.data.CheckerIssue;
import de.viadee.bpm.vPAV.processing.model.graph.Path;

public class JsonOutputWriter implements IssueOutputWriter {

    /**
     * Writes all collected issues to the vPAV output
     *
     * @param issues
     *            Collection of CheckerIssues
     */
    @Override
    public void write(final Collection issues) throws OutputWriterException {
        final String json = transformToJsonDatastructure(issues);
        if (json != null && !json.isEmpty()) {
            try {
                final OutputStreamWriter osWriter = new OutputStreamWriter(
                        new FileOutputStream(ConfigConstants.VALIDATION_JSON_OUTPUT), StandardCharsets.UTF_8);
                osWriter.write(json);
                osWriter.close();
            } catch (final IOException ex) {
                throw new OutputWriterException("json output couldn't be written");
            }
        }
    }

    /**
     * Transforms the collected issues to a JSON-String
     *
     * @param issues
     * @return String
     */
    private static String transformToJsonDatastructure(final Collection issues) {
        final JsonArray jsonIssues = new JsonArray();
        if (issues != null && issues.size() > 0) {
            for (final CheckerIssue issue : issues) {
                final JsonObject obj = new JsonObject();
                obj.addProperty(BpmnConstants.VPAV_ID, issue.getId());
                obj.addProperty(BpmnConstants.VPAV_BPMN_FILE, issue.getBpmnFile());
                obj.addProperty(BpmnConstants.VPAV_RULE_NAME, issue.getRuleName());
                obj.addProperty(BpmnConstants.VPAV_RULE_DESCRIPTION, issue.getRuleDescription());
                obj.addProperty(BpmnConstants.VPAV_ELEMENT_ID, issue.getElementId());
                obj.addProperty(BpmnConstants.VPAV_ELEMENT_NAME, issue.getElementName());
                obj.addProperty(BpmnConstants.VPAV_CLASSIFICATION, issue.getClassification().name());
                obj.addProperty(BpmnConstants.VPAV_RESOURCE_FILE, issue.getResourceFile());
                obj.addProperty(BpmnConstants.VPAV_VARIABLE, issue.getVariable());
                obj.addProperty(BpmnConstants.VPAV_ANOMALY,
                        issue.getAnomaly() == null ? null : issue.getAnomaly().getDescription());
                final JsonArray jsonPaths = new JsonArray();
                final List paths = issue.getInvalidPaths();
                if (paths != null && paths.size() > 0) {
                    for (final Path path : paths) {
                        final JsonArray jsonPath = new JsonArray();
                        final List elements = path.getElements();
                        for (BpmnElement element : elements) {
                            final JsonObject jsonElement = new JsonObject();
                            final String id = element.getBaseElement().getId();
                            final String name = element.getBaseElement().getAttributeValue(BpmnConstants.ATTR_NAME);
                            jsonElement.addProperty(BpmnConstants.VPAV_ELEMENT_ID, id);
                            jsonElement.addProperty(BpmnConstants.VPAV_ELEMENT_NAME,
                                    name == null ? null : name.replaceAll("\n", ""));
                            jsonPath.add(jsonElement);
                        }
                        jsonPaths.add(jsonPath);
                    }
                }
                obj.add(BpmnConstants.VPAV_PATHS, jsonPaths);
                obj.addProperty(BpmnConstants.VPAV_MESSAGE, issue.getMessage());
                obj.addProperty(BpmnConstants.VPAV_ELEMENT_DESCRIPTION, issue.getElementDescription());
                jsonIssues.add(obj);
            }
        }

        return new GsonBuilder().setPrettyPrinting().create().toJson(jsonIssues);
    }
}