| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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.apache.sling.cms.core.insights.impl.providers; |
| |
| import java.text.DecimalFormat; |
| |
| import org.apache.commons.math.stat.descriptive.moment.StandardDeviation; |
| import org.apache.sling.api.resource.Resource; |
| import org.apache.sling.caconfig.resource.ConfigurationResourceResolver; |
| import org.apache.sling.cms.CMSConstants; |
| import org.apache.sling.cms.Site; |
| import org.apache.sling.cms.SiteManager; |
| import org.apache.sling.cms.core.insights.impl.BaseInsightProvider; |
| import org.apache.sling.cms.core.internal.models.ReadabilitySiteConfig; |
| import org.apache.sling.cms.i18n.I18NDictionary; |
| import org.apache.sling.cms.i18n.I18NProvider; |
| import org.apache.sling.cms.insights.Insight; |
| import org.apache.sling.cms.insights.InsightProvider; |
| import org.apache.sling.cms.insights.InsightRequest; |
| import org.apache.sling.cms.insights.Message; |
| import org.apache.sling.cms.insights.PageInsightRequest; |
| import org.apache.sling.cms.readability.ReadabilityService; |
| import org.apache.sling.cms.readability.ReadabilityServiceFactory; |
| import org.apache.sling.cms.readability.Text; |
| import org.osgi.service.component.annotations.Component; |
| import org.osgi.service.component.annotations.Reference; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| @Component(service = InsightProvider.class, immediate = true) |
| public class ReadabilityInsightProvider extends BaseInsightProvider { |
| |
| public static final String I18N_KEY_READABILITY_DETAIL = "slingcms.readability.detail"; |
| public static final String I18N_KEY_READABILITY_RESULT_DANGER = "slingcms.readability.danger"; |
| public static final String I18N_KEY_READABILITY_RESULT_SUCCESS = "slingcms.readability.success"; |
| public static final String I18N_KEY_READABILITY_RESULT_WARN = "slingcms.readability.warn"; |
| public static final String I18N_KEY_READABILITY_STATS = "slingcms.readability.stats"; |
| |
| private static final Logger log = LoggerFactory.getLogger(ReadabilityInsightProvider.class); |
| |
| public static final String READABILITY_CA_CONFIG = "readability"; |
| |
| @Reference |
| private ConfigurationResourceResolver caResolver; |
| |
| @Reference |
| private ReadabilityServiceFactory factory; |
| |
| @Reference |
| private I18NProvider i18nProvider; |
| |
| private void addDetail(Insight insight, double score, String title) { |
| insight.getScoreDetails().add(Message.defaultMsg(title + ": " + new DecimalFormat("##0.00").format(score))); |
| } |
| |
| /** |
| * Method for the extending classes to implement, this can safely throw |
| * exceptions and this will trigger a failure result to be returned. |
| * |
| * @param request the request to evaluate |
| * @return the result of evaluation |
| * @throws Exception any exception |
| */ |
| @Override |
| protected Insight doEvaluateRequest(InsightRequest request) throws Exception { |
| Insight insight = new Insight(this, request); |
| |
| PageInsightRequest pageRequest = (PageInsightRequest) request; |
| String text = pageRequest.getPageBodyElement().text(); |
| Site site = null; |
| SiteManager smgr = request.getResource().adaptTo(SiteManager.class); |
| if (smgr != null) { |
| site = smgr.getSite(); |
| } |
| |
| Resource readabilityResource = caResolver.getResource(pageRequest.getPage().getResource(), |
| CMSConstants.INSIGHTS_CA_CONFIG_BUCKET, READABILITY_CA_CONFIG); |
| ReadabilitySiteConfig config = null; |
| if (readabilityResource != null) { |
| log.debug("Using readability configuration {}", readabilityResource); |
| config = readabilityResource.adaptTo(ReadabilitySiteConfig.class); |
| } |
| |
| I18NDictionary dictionary = i18nProvider.getDictionary(request.getResource().getResourceResolver()); |
| if (site != null && config != null) { |
| executeReadabilityCheck(insight, pageRequest, text, site, config, dictionary); |
| |
| } else { |
| log.warn("Failed to get readability for resource {} site or config were null", |
| pageRequest.getPage().getResource()); |
| insight.setScored(false); |
| insight.setSucceeded(false); |
| insight.setPrimaryMessage(Message.danger(dictionary.get(I18N_KEY_READABILITY_RESULT_DANGER, |
| new Object[] { pageRequest.getPage().getPath() }))); |
| } |
| |
| return insight; |
| } |
| |
| private void executeReadabilityCheck(Insight insight, PageInsightRequest pageRequest, String text, Site site, |
| ReadabilitySiteConfig config, I18NDictionary dictionary) { |
| ReadabilityService svc = factory.getReadabilityService(site.getLocale()); |
| |
| double score = svc.calculateAverageGradeLevel(text); |
| String scoreStr = new DecimalFormat("##0.00").format(score); |
| |
| insight.setScored(true); |
| |
| log.debug("Calculating readability of page {}", pageRequest.getPage()); |
| |
| if (score > config.getMaxGradeLevel() || score < config.getMinGradeLevel()) { |
| log.debug("Retrieved out of bounds readability {} based on range {}-{}", score, |
| config.getMinGradeLevel(), config.getMaxGradeLevel()); |
| |
| StandardDeviation sd = new StandardDeviation(false); |
| double stddev = sd.evaluate(new double[] { config.getMinGradeLevel(), config.getMaxGradeLevel() }); |
| double dev; |
| if (score > config.getMaxGradeLevel()) { |
| dev = score - config.getMaxGradeLevel(); |
| } else { |
| dev = config.getMinGradeLevel() - score; |
| } |
| double calcScore = 1 - (dev / stddev) * .5; |
| if (calcScore > 0) { |
| insight.setScore(calcScore); |
| } else { |
| insight.setScore(0.0); |
| } |
| insight.setPrimaryMessage(Message.warn(dictionary.get(I18N_KEY_READABILITY_RESULT_WARN, |
| new Object[] { config.getMinGradeLevel(), config.getMaxGradeLevel(), scoreStr }))); |
| } else { |
| log.debug("Retrieved in bounds readability {} based on range {}-{}", score, config.getMinGradeLevel(), |
| config.getMaxGradeLevel()); |
| insight.setScore(1.0); |
| insight.setPrimaryMessage(Message.success(dictionary.get(I18N_KEY_READABILITY_RESULT_SUCCESS, |
| new Object[] { config.getMinGradeLevel(), config.getMaxGradeLevel(), scoreStr }))); |
| } |
| Text t = svc.extractSentences(text); |
| |
| insight.getScoreDetails().add(Message.defaultMsg(dictionary.get(I18N_KEY_READABILITY_STATS, |
| new Object[] { t.getSentences().size(), t.getWordCount(), t.getComplexWordCount() }))); |
| addDetail(insight, svc.calculateARI(t), "ARI"); |
| addDetail(insight, svc.calculateColemanLiauIndex(t), "Coleman-Liau Index"); |
| addDetail(insight, svc.calculateFleschKincaidGradeLevel(t), "Flesch-Kincaid Grade Level"); |
| addDetail(insight, svc.calculateFleschReadingEase(t), "Flesch-Kincaid Reading Ease"); |
| addDetail(insight, svc.calculateGunningFog(t), "Gunning Fog"); |
| addDetail(insight, svc.calculateSMOG(t), "SMOG"); |
| } |
| |
| @Override |
| public String getId() { |
| return READABILITY_CA_CONFIG; |
| } |
| |
| @Override |
| public String getTitle() { |
| return "Readability"; |
| } |
| |
| @Override |
| public boolean isEnabled(InsightRequest request) { |
| Site site = null; |
| SiteManager smgr = request.getResource().adaptTo(SiteManager.class); |
| if (smgr != null) { |
| site = smgr.getSite(); |
| } |
| if (request.getType() != InsightRequest.TYPE.PAGE) { |
| log.debug("Insight is not of page type"); |
| return false; |
| } |
| if (site == null || site.getLocale() == null) { |
| log.debug("Did not find site or locale"); |
| return false; |
| } |
| if (factory.getReadabilityService(site.getLocale()) == null) { |
| log.debug("Unable to get readability service for locale {}", site.getLocale()); |
| return false; |
| } |
| return true; |
| } |
| } |