package pnews.servlet;
import java.io.IOException;
-import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
+import java.time.Instant;
+import java.time.temporal.ChronoUnit;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import com.rometools.rome.io.SyndFeedInput;
import com.rometools.rome.io.XmlReader;
-import pnews.Article;
-import pnews.Category;
+import net.wpitchoune.pnews.Article;
+import net.wpitchoune.pnews.ArticleStore;
+import net.wpitchoune.pnews.Category;
+import net.wpitchoune.pnews.Config;
+import net.wpitchoune.pnews.EntityStat;
+import net.wpitchoune.pnews.Feed;
+import net.wpitchoune.pnews.classifier.NamedEntityRecognizer;
public class ArticleProvider {
- public final static ArticleProvider singleton = new ArticleProvider();
- private static final Logger LOG = Logger.getLogger(ArticleProvider.class.getName());
+ private static final String CLASS_NAME = ArticleProvider.class.getName();
+ private static final Logger LOG = Logger.getLogger(CLASS_NAME);
private final Map<Category, List<Article>> articlesByCategory = new HashMap<>();
- private final ScheduledExecutorService scheduler = Executors.newScheduledThreadPool(2);
+ private final ScheduledExecutorService scheduler = Executors.newScheduledThreadPool(Runtime.getRuntime().availableProcessors());
+ private final Config config;
- private ArticleProvider() {
- for (Category cat:Category.values())
+ public ArticleProvider(Config config) {
+ this.config = config;
+ for (Category cat: config.getCategories())
scheduler.scheduleAtFixedRate(new Refresher(cat), 2, 600, TimeUnit.SECONDS);
}
private static SyndFeed getSyndFeed(String u) throws IllegalArgumentException, FeedException, MalformedURLException, IOException {
- InputStream is;
XmlReader r;
r = new XmlReader(new URL(u));
- XmlReader.setDefaultEncoding("UTF-8");
- return new SyndFeedInput().build(r);
+ return new SyndFeedInput().build(r);
+ }
+
+ private List<Article> getArticlesForUpdate(Category cat) {
+ List<Article> result;
+ synchronized (articlesByCategory) {
+ result = articlesByCategory.get(cat);
+ if (result == null) {
+ result = new ArrayList<>();
+ articlesByCategory.put(cat, result);
+ }
+ return result;
+ }
}
- private static Map<Category, String[]> getFeeds() {
- Map<Category, String[]> result;
-
- result = new HashMap<>();
-
- result.put(Category.TOP,
- new String[] {
- "http://www.francetvinfo.fr/titres.rss",
- "http://www.rfi.fr/general/rss",
- "http://www.cnews.fr/rss/une",
- "http://www.ladepeche.fr/rss/a-la-une.rss",
- "https://www.franceinter.fr/rss/a-la-une.xml",
- "https://www.francebleu.fr/rss/a-la-une.xml",
- "http://www.bfmtv.com/rss/info/flux-rss/flux-toutes-les-actualites/"
- });
-
- result.put(Category.SPORT,
- new String[] { "http://www.france24.com/fr/sports/rss" });
-
- result.put(Category.FRANCE,
- new String[] { "http://www.france24.com/fr/france/rss",
- "http://www.rfi.fr/france/rss"});
-
- result.put(Category.EUROPE,
- new String[] { "http://www.france24.com/fr/europe/rss" });
-
- result.put(Category.MONDE,
- new String[] { "http://www.france24.com/fr/actualites/rss" });
+ private boolean exists(String articleLink, List<Article> articles) {
+ synchronized (articles) {
+ for (Article a: articles)
+ if (a.getLink().equals(articleLink))
+ return true;
+ }
+ return false;
+ }
+
+ private Instant getArticleInstant(SyndEntry entry) {
+ Date date;
+
+ date = entry.getUpdatedDate();
+ if (date == null)
+ date = entry.getPublishedDate();
+ if (date == null)
+ return Instant.now();
- result.put(Category.ECO,
- new String[] { "http://www.france24.com/fr/economie/rss",
- "http://www.rfi.fr/economie/rss" });
+ return date.toInstant();
+ }
+
+ private Article toArticle(String link, SyndEntry entry, SyndFeed feed, String lang, Instant instant) {
+ String desc, title, thumbnail, feedTitle, str;
+ List<String> entities;
- result.put(Category.ESSONNE,
- new String[] { "http://www.tourisme-essonne.com/rss/actus/",
- "http://www.ville-palaiseau.fr/rss/actualites.htm"
- /*"https://www.essonneinfo.fr/feed/"*/ });
+ feedTitle = feed.getTitle();
+ if (feedTitle != null) {
+ feedTitle = feedTitle.trim();
+ }
- result.put(Category.PEOPLE,
- new String[] { "http://www.premiere.fr/rss/actu-live",
- "http://www.purepeople.com/rss/news_t0.xml"
- });
+ thumbnail = null;
+ for (SyndEnclosure e: entry.getEnclosures()) {
+ if (e.getType().startsWith("image/"))
+ thumbnail = e.getUrl();
+ break;
+ }
+
+ title = entry.getTitle().trim();
- result.put(Category.TECHNOLOGIE,
- new String[] { "http://feeds.feedburner.com/lesnumeriques/news",
- "http://www.zdnet.fr/feeds/rss/actualites/"});
+ if (entry.getDescription() != null) {
+ str = entry.getDescription().getValue();
+ desc = Jsoup.parse(str).text();
+ } else {
+ desc = null;
+ LOG.severe("No description for " + feedTitle + " - " + title);
+ }
+
+ entities = new ArrayList<>();
+ if (lang.equals("en"))
+ try {
+ NamedEntityRecognizer.classify(title, entities, config);
+ if (desc != null)
+ NamedEntityRecognizer.classify(desc, entities, config);
+ } catch (ClassCastException | ClassNotFoundException | IOException e1) {
+ LOG.log(Level.SEVERE, "Cannot classify " + feedTitle, e1);
+ }
- return result;
+ return new Article(link, title, desc, thumbnail, instant, feedTitle, entities.toArray(new String[0]));
}
private void addArticles(Category cat, SyndFeed feed) {
- String thumbnail;
- String desc, link, title, feedTitle, feedImage;
- Date date;
+ String feedTitle;
List<Article> articles;
- boolean exist;
+ Article a;
feedTitle = feed.getTitle().trim();
- if (feed.getImage() != null)
- feedImage = feed.getImage().getUrl();
- else
- feedImage = null;
-
- LOG.info("addArticles " + cat.getId() + " " + feedTitle + " number of articles: " + feed.getEntries().size());
+ LOG.info("addArticles " + cat.getLabel() + " " + feedTitle + " number of articles: " + feed.getEntries().size());
for (SyndEntry entry: feed.getEntries()) {
- thumbnail = null;
- for (SyndEnclosure e: entry.getEnclosures()) {
- if (e.getType().startsWith("image/"))
- thumbnail = e.getUrl();
- break;
+ String link = entry.getLink().trim();
+ articles = getArticlesForUpdate(cat);
+ if (exists(link, articles)) {
+ LOG.fine("addArticles " + link + " is already present");
+ continue ;
}
- if (thumbnail == null)
- thumbnail = feedImage;
-
- title = entry.getTitle().trim();
- if (entry.getDescription() != null) {
- desc = Jsoup.parse(entry.getDescription().getValue()).text();
- } else {
- desc = null;
- LOG.severe("No description for " + feedTitle + " - " + title);
- }
+ final Instant instant = getArticleInstant(entry);
- date = entry.getPublishedDate();
- if (date == null)
- date = entry.getUpdatedDate();
- if (date == null) {
- LOG.severe("The article " + feedTitle + " - " + title + " does not have a date");
- continue;
- }
+ if (config.isObsolete(instant))
+ continue ;
- synchronized(articlesByCategory) {
- link = entry.getLink().trim();
-
- articles = articlesByCategory.get(cat);
- exist = false;
- if (articles == null) {
- articles = new ArrayList<>();
- articlesByCategory.put(cat, articles);
- } else {
- for (Article a: articles)
- if (a.link.equals(link)) {
- LOG.fine("addArticles " + link + " is already present");
- exist = true;
- }
- }
-
- if (!exist) {
- LOG.fine("add " + cat.getId() + " " + feedTitle + " " + title);
-
- articles.add(new Article(link, cat, title, desc, thumbnail, date,
- feed.getTitle()));
-
- Collections.sort(articles, new Comparator<Article>() {
- @Override
- public int compare(Article o1, Article o2) {
- return o2.publicationDate.compareTo(o1.publicationDate);
- }
+ a = ArticleStore.singleton.getArticle(link, ()->toArticle(link, entry, feed, cat.getLanguage(), instant));
+
+ synchronized (articles) {
+ articles.add(a);
- });
- } else {
- LOG.finest("addArticles already exist: " + title);
- }
+ Collections.sort(articles, new Comparator<Article>() {
+ @Override
+ public int compare(Article o1, Article o2) {
+ if (o1.getPublicationDate() == o2.getPublicationDate())
+ return 0;
+ if (o1.getPublicationDate() == null)
+ return 1;
+ if (o2.getPublicationDate() == null)
+ return -1;
+ return o2.getPublicationDate().compareTo(o1.getPublicationDate());
+ }
+ });
}
}
- LOG.info("addArticles done " + cat.getId());
+ LOG.info("addArticles done " + cat.getLabel());
}
-
+
private void retrieveArticles(Category cat) throws IllegalArgumentException, MalformedURLException, FeedException, IOException {
- String[] feeds;
+ List<Feed> feeds;
- feeds = getFeeds().get(cat);
+ feeds = config.getFeedsByCategory().get(cat);
if (feeds != null)
- for (String str: feeds)
+ for (Feed f: feeds)
try {
- addArticles(cat, getSyndFeed(str));
+ addArticles(cat, getSyndFeed(f.getURL()));
} catch (Throwable e) {
LOG.log(Level.SEVERE,
- "retrieveArticles failure " + cat.getId() + " " + str,
+ "retrieveArticles failure " + cat.getLabel() + " " + f.toString(),
e);
}
else
LOG.severe("No feed for category " + cat);
}
- public List<Article> getArticles(Category cat)
+ /**
+ * Returns a copy.
+ */
+ public List<Article> getArticles(Category cat, String entity)
throws IllegalArgumentException, MalformedURLException, FeedException, IOException {
+ List<Article> articles, result;
+
synchronized (articlesByCategory) {
- return articlesByCategory.get(cat);
+ articles = getArticlesForUpdate(cat);
+ }
+
+ synchronized (articles) {
+ if (entity == null)
+ return new ArrayList<>(articles);
+
+ result = new ArrayList<>(articles.size());
+ for (Article a: articles)
+ if (a.hasEntity(entity))
+ result.add(a);
+
+ return result;
}
}
+ public List<EntityStat> getEntityStats(Category cat) throws IllegalArgumentException, MalformedURLException, FeedException, IOException {
+ List<Article> articles;
+ Map<String, EntityStat> entities;
+ final String FUNCTION_NAME = "getEntities";
+ EntityStat s;
+ List<EntityStat> stats;
+ Instant minInstant;
+
+ LOG.entering(CLASS_NAME, FUNCTION_NAME, cat);
+
+ articles = getArticles(cat, null);
+
+ minInstant = Instant.now().minus(15, ChronoUnit.DAYS);
+
+ entities = new HashMap<>();
+ for (Article a: articles)
+ if (a.getPublicationDate().isAfter(minInstant) && a.getEntities() != null)
+ for (String e: a.getEntities()) {
+ s = entities.get(e);
+ if (s == null) {
+ s = new EntityStat(e);
+ entities.put(e, s);
+ }
+ s.increment();
+ }
+
+ stats = new ArrayList<>(entities.values());
+ stats.sort(new Comparator<EntityStat>() {
+
+ @Override
+ public int compare(EntityStat o1, EntityStat o2) {
+ return Integer.compare(o2.getCount(), o1.getCount());
+ }
+
+ });
+
+ LOG.exiting(CLASS_NAME, FUNCTION_NAME, stats);
+
+ return stats;
+ }
+
private class Refresher implements Runnable {
private final Category category;
}
@Override
- public void run() {
- List<Article> articles;
-
- LOG.info("refresher "+ category.getId());
+ public void run() {
+ LOG.info("refresher "+ category.getLabel());
try {
retrieveArticles(category);
-
- synchronized (articlesByCategory) {
- articles = articlesByCategory.get(category);
- if (articles != null && articles.size() > 100) {
- articlesByCategory.put(category,
- articles.subList(0, 100));
-
- }
- LOG.info("refresher " + category.getId() + " number of articles: " + articles.size());
- }
} catch (IllegalArgumentException | FeedException | IOException e) {
LOG.log(Level.SEVERE, "refresher failure", e);
}
- LOG.info("refresher "+ category.getId() + " done");
+ LOG.info("refresher "+ category.getLabel() + " done");
}
}
}
projects / pnews.git / blobdiff