public Results fetch()

in src/main/java/org/apache/tomee/website/AbstractDownloadsNG.java [298:348]
33 lines of code
17 McCabe index (conditional complexity)

        public Results fetch(final URL url) {

            try (final InputStream input = url.openStream()) {

                final LinkContentHandler linkHandler = new LinkContentHandler();
                final Metadata metadata = new Metadata();
                final HtmlParser parser = new HtmlParser();

                final ContentHandler textHandler = new BodyContentHandler(-1);

                parser.parse(input,
                        new TeeContentHandler(linkHandler, textHandler),
                        metadata,
                        new ParseContext());

                //TODO Possible Improvement: Filters (see below) as CLI parameters

                // keep only <a> tags with non-empty href + avoid duplicates + only links containing "tomee" or "openejb", filtering some other artifacts on the dist server
                final List<Link> downloadLinks = linkHandler.getLinks().stream()
                        .filter(l -> l.isAnchor() &&
                                !l.getUri().isEmpty() &&
                                !l.getUri().startsWith("#") &&
                                (l.getUri().contains("tomee-") || l.getUri().contains("openejb-standalone")) &&
                                // release >= 1.7.x contains this -> is not linked on website -> filter it
                                !l.getUri().contains("arquillian") &&
                                // release >= 4.7.x contains this -> is not linked on website -> filter it
                                !l.getUri().contains("openejb-standalone-4.7.5") &&
                                // release >= 1.7.x contains this -> is not linked on website -> filter it
                                !l.getUri().contains("openejb-provisionning-4.7.5") &&
                                // release >= 1.7.x contains this -> is not linked on website -> filter it
                                !l.getUri().contains("openejb-ssh-4.7.5") &&
                                // release >= 1.7.x contains this -> is not linked on website -> filter it
                                !l.getUri().contains("tomee-webaccess") &&
                                // release 9.0.0-M3 has no (real) source release -> filter it
                                !l.getUri().contains("apache-tomee-9.0.0-M3-source-release") &&
                                // release 9.0.0-M2 has no (real) source release -> filter it
                                !l.getUri().contains("apache-tomee-9.0.0-M2-source-release") &&
                                // release 9.0.0-M1 has no (real) source release -> filter it
                                !l.getUri().contains("apache-tomee-9.0.0-M1-source-release") &&
                                // no need to have signature hashes
                                !l.getUri().endsWith("asc.sha1") &&
                                !l.getUri().endsWith("asc.sha256") &&
                                !l.getUri().endsWith("asc.sha512"))
                        .filter(distinctBy(Link::getUri))
                        .collect(Collectors.toList());

                return new Results(url.toString(), Collections.unmodifiableList(downloadLinks));
            } catch (Exception e) {
                throw new RuntimeException("Could not obtain download link. See stacktrace for further information.", e);
            }
        }