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yacy_search_server/htroot/Load_RSS_p.java

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/**
* Load_RSS_p
* Copyright 2010 by Michael Peter Christen, mc@yacy.net, Frankfurt am Main, Germany
* First released 20.08.2010 at http://yacy.net
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program in the file lgpl21.txt
* If not, see <http://www.gnu.org/licenses/>.
*/
import java.io.IOException;
import java.net.MalformedURLException;
import java.text.DateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.regex.Pattern;
import net.yacy.cora.document.ASCII;
import net.yacy.cora.document.Hit;
import net.yacy.cora.document.RSSFeed;
import net.yacy.cora.document.RSSMessage;
import net.yacy.cora.document.RSSReader;
import net.yacy.cora.document.UTF8;
import net.yacy.cora.federate.yacy.CacheStrategy;
import net.yacy.cora.protocol.RequestHeader;
import net.yacy.cora.util.SpaceExceededException;
import net.yacy.crawler.data.CrawlQueues;
import net.yacy.crawler.retrieval.RSSLoader;
import net.yacy.crawler.retrieval.Response;
import net.yacy.data.WorkTables;
import net.yacy.document.Parser.Failure;
import net.yacy.kelondro.blob.Tables;
import net.yacy.kelondro.blob.Tables.Row;
import net.yacy.kelondro.data.meta.DigestURI;
import net.yacy.kelondro.logging.Log;
import net.yacy.repository.Blacklist.BlacklistType;
import net.yacy.search.Switchboard;
import net.yacy.server.serverObjects;
import net.yacy.server.serverSwitch;
public class Load_RSS_p {
public static serverObjects respond(@SuppressWarnings("unused") final RequestHeader header, final serverObjects post, final serverSwitch env) {
final serverObjects prop = new serverObjects();
final Switchboard sb = (Switchboard)env;
prop.put("showload", 0);
prop.put("showitems", 0);
prop.put("shownewfeeds", 0);
prop.put("showscheduledfeeds", 0);
prop.put("url", "");
if (post != null && post.containsKey("removeSelectedFeedsNewList")) {
for (final Map.Entry<String, String> entry: post.entrySet()) {
if (entry.getValue().startsWith("mark_")) try {
sb.tables.delete("rss", entry.getValue().substring(5).getBytes());
} catch (final IOException e) {
Log.logException(e);
}
}
}
if (post != null && post.containsKey("removeAllFeedsNewList")) try {
final Iterator<Row> plainIterator = sb.tables.iterator("rss");
Row row;
String messageurl;
final List<byte[]> d = new ArrayList<byte[]>();
while (plainIterator.hasNext()) {
row = plainIterator.next();
if (row == null) continue;
messageurl = row.get("url", "");
if (messageurl.isEmpty()) continue;
final byte[] api_pk = row.get("api_pk");
final Row r = api_pk == null ? null : sb.tables.select("api", api_pk);
if (r == null || !r.get("comment", "").matches(".*" + Pattern.quote(messageurl) + ".*")) {
d.add(row.getPK());
}
}
for (final byte[] pk: d) {
sb.tables.delete("rss", pk);
}
} catch (final IOException e) {
Log.logException(e);
} catch (final SpaceExceededException e) {
Log.logException(e);
}
if (post != null && post.containsKey("removeSelectedFeedsScheduler")) {
for (final Map.Entry<String, String> entry: post.entrySet()) {
if (entry.getValue().startsWith("mark_")) try {
final byte[] pk = entry.getValue().substring(5).getBytes();
final Row rssRow = sb.tables.select("rss", pk);
final byte[] schedulerPK = rssRow.get("api_pk", (byte[]) null);
if (schedulerPK != null) sb.tables.delete("api", schedulerPK);
rssRow.remove("api_pk");
sb.tables.insert("rss", pk, rssRow);
} catch (final IOException e) {
Log.logException(e);
} catch (final SpaceExceededException e) {
Log.logException(e);
}
}
}
if (post != null && post.containsKey("removeAllFeedsScheduler")) try {
final Iterator<Row> plainIterator = sb.tables.iterator("rss");
Row row;
String messageurl;
final List<byte[]> d = new ArrayList<byte[]>();
while (plainIterator.hasNext()) {
row = plainIterator.next();
if (row == null) continue;
messageurl = row.get("url", "");
if (messageurl.isEmpty()) continue;
final byte[] api_pk = row.get("api_pk");
final Row r = api_pk == null ? null : sb.tables.select("api", api_pk);
if (r != null && r.get("comment", "").matches(".*" + Pattern.quote(messageurl) + ".*")) {
d.add(row.getPK());
}
}
for (final byte[] pk: d) {
final Row rssRow = sb.tables.select("rss", pk);
final byte[] schedulerPK = rssRow.get("api_pk", (byte[]) null);
if (schedulerPK != null) sb.tables.delete("api", schedulerPK);
rssRow.remove("api_pk");
sb.tables.insert("rss", pk, rssRow);
}
} catch (final IOException e) {
Log.logException(e);
} catch (final SpaceExceededException e) {
Log.logException(e);
}
if (post != null && post.containsKey("addSelectedFeedScheduler")) {
for (final Map.Entry<String, String> entry: post.entrySet()) {
if (entry.getValue().startsWith("mark_")) {
Row row;
try {
final byte [] pk = entry.getValue().substring(5).getBytes();
row = sb.tables.select("rss", pk);
} catch (final IOException e) {
Log.logException(e);
continue;
} catch (final SpaceExceededException e) {
Log.logException(e);
continue;
}
DigestURI url = null;
try {
url = new DigestURI(row.get("url", ""));
} catch (final MalformedURLException e) {
Log.logWarning("Load_RSS", "malformed url '" + row.get("url", "") + "': " + e.getMessage());
continue;
}
// load feeds concurrently to get better responsibility in web interface
new RSSLoader(sb, url).start();
}
}
}
if (post == null || (post != null && (
post.containsKey("addSelectedFeedScheduler") ||
post.containsKey("removeSelectedFeedsNewList") ||
post.containsKey("removeAllFeedsNewList") ||
post.containsKey("removeSelectedFeedsScheduler") ||
post.containsKey("removeAllFeedsScheduler")
))) {
try {
// get list of primary keys from the api table with scheduled feed loading requests
Tables.Row row;
String messageurl;
// check feeds
int newc = 0, apic = 0;
final Iterator<Row> plainIterator = sb.tables.iterator("rss");
while (plainIterator.hasNext()) {
row = plainIterator.next();
if (row == null) continue;
messageurl = row.get("url", "");
if (messageurl.isEmpty()) continue;
// get referrer
final DigestURI referrer = sb.getURL(row.get("referrer", "").getBytes());
// check if feed is registered in scheduler
final byte[] api_pk = row.get("api_pk");
final Row r = api_pk == null ? null : sb.tables.select("api", api_pk);
if (r != null && r.get("comment", "").matches(".*" + Pattern.quote(messageurl) + ".*")) {
// this is a recorded entry
final Date date_next_exec = r.get(WorkTables.TABLE_API_COL_DATE_NEXT_EXEC, (Date) null);
prop.put("showscheduledfeeds_list_" + apic + "_pk", UTF8.String(row.getPK()));
prop.put("showscheduledfeeds_list_" + apic + "_count", apic);
prop.putXML("showscheduledfeeds_list_" + apic + "_rss", messageurl);
prop.putXML("showscheduledfeeds_list_" + apic + "_title", row.get("title", ""));
prop.putXML("showscheduledfeeds_list_" + apic + "_referrer", referrer == null ? "#" : referrer.toNormalform(true));
prop.put("showscheduledfeeds_list_" + apic + "_recording", DateFormat.getDateTimeInstance().format(row.get("recording_date", new Date())));
prop.put("showscheduledfeeds_list_" + apic + "_lastload", DateFormat.getDateTimeInstance().format(row.get("last_load_date", new Date())));
prop.put("showscheduledfeeds_list_" + apic + "_nextload", date_next_exec == null ? "" : DateFormat.getDateTimeInstance().format(date_next_exec));
prop.put("showscheduledfeeds_list_" + apic + "_lastcount", row.get("last_load_count", 0));
prop.put("showscheduledfeeds_list_" + apic + "_allcount", row.get("all_load_count", 0));
prop.put("showscheduledfeeds_list_" + apic + "_updperday", row.get("avg_upd_per_day", 0));
apic++;
} else {
// this is a new entry
prop.put("shownewfeeds_list_" + newc + "_pk", UTF8.String(row.getPK()));
prop.put("shownewfeeds_list_" + newc + "_count", newc);
prop.putXML("shownewfeeds_list_" + newc + "_rss", messageurl);
prop.putXML("shownewfeeds_list_" + newc + "_title", row.get("title", ""));
prop.putXML("shownewfeeds_list_" + newc + "_referrer", referrer == null ? "" : referrer.toNormalform(true));
prop.put("shownewfeeds_list_" + newc + "_recording", DateFormat.getDateTimeInstance().format(row.get("recording_date", new Date())));
newc++;
}
if (apic > 1000 || newc > 1000) break;
}
prop.put("showscheduledfeeds_list" , apic);
prop.put("showscheduledfeeds_num", apic);
prop.put("showscheduledfeeds", apic > 0 ? apic : 0);
prop.put("shownewfeeds_list" , newc);
prop.put("shownewfeeds_num", newc);
prop.put("shownewfeeds", newc > 0 ? 1 : 0);
} catch (final IOException e) {
Log.logException(e);
} catch (final SpaceExceededException e) {
Log.logException(e);
}
return prop;
}
prop.put("url", post.get("url", ""));
int repeat_time = post.getInt("repeat_time", -1);
final String repeat_unit = post.get("repeat_unit", "seldays"); // selminutes, selhours, seldays
if (!"on".equals(post.get("repeat", "off")) && repeat_time > 0) repeat_time = -1;
boolean record_api = false;
DigestURI url = null;
try {
url = post.containsKey("url") ? new DigestURI(post.get("url", "")) : null;
} catch (final MalformedURLException e) {
Log.logWarning("Load_RSS_p", "url not well-formed: '" + post.get("url", "") + "'");
}
// if we have an url then try to load the rss
RSSReader rss = null;
if (url != null) try {
prop.put("url", url.toNormalform(true));
final Response response = sb.loader.load(sb.loader.request(url, true, false), CacheStrategy.NOCACHE, Integer.MAX_VALUE, BlacklistType.CRAWLER, CrawlQueues.queuedMinLoadDelay);
final byte[] resource = response == null ? null : response.getContent();
rss = resource == null ? null : RSSReader.parse(RSSFeed.DEFAULT_MAXSIZE, resource);
} catch (final IOException e) {
Log.logException(e);
}
// index all selected items: description only
if (rss != null && post.containsKey("indexSelectedItemContent")) {
final RSSFeed feed = rss.getFeed();
loop: for (final Map.Entry<String, String> entry: post.entrySet()) {
if (entry.getValue().startsWith("mark_")) try {
final RSSMessage message = feed.getMessage(entry.getValue().substring(5));
final DigestURI messageurl = new DigestURI(message.getLink());
if (RSSLoader.indexTriggered.containsKey(messageurl.hash())) continue loop;
if (sb.urlExists(ASCII.String(messageurl.hash())) != null) continue loop;
sb.addToIndex(messageurl, null, null);
RSSLoader.indexTriggered.insertIfAbsent(messageurl.hash(), new Date());
} catch (final IOException e) {
Log.logException(e);
} catch (final Failure e) {
Log.logException(e);
}
}
}
if (rss != null && post.containsKey("indexAllItemContent")) {
record_api = true;
final RSSFeed feed = rss.getFeed();
RSSLoader.indexAllRssFeed(sb, url, feed);
}
if (record_api && rss != null && rss.getFeed() != null && rss.getFeed().getChannel() != null) {
// record API action
RSSLoader.recordAPI(sb, post.get(WorkTables.TABLE_API_COL_APICALL_PK, null), url, rss.getFeed(), repeat_time, repeat_unit);
}
// show items from rss
if (rss != null) {
prop.put("showitems", 1);
final RSSFeed feed = rss.getFeed();
final RSSMessage channel = feed.getChannel();
prop.putHTML("showitems_title", channel == null ? "" : channel.getTitle());
String author = channel == null ? "" : channel.getAuthor();
if (author == null || author.isEmpty()) author = channel == null ? "" : channel.getCopyright();
Date pubDate = channel == null ? null : channel.getPubDate();
prop.putHTML("showitems_author", author == null ? "" : author);
prop.putHTML("showitems_description", channel == null ? "" : channel.getDescription());
prop.putHTML("showitems_language", channel == null ? "" : channel.getLanguage());
prop.putHTML("showitems_date", (pubDate == null) ? "" : DateFormat.getDateTimeInstance().format(pubDate));
prop.putHTML("showitems_ttl", channel == null ? "" : channel.getTTL());
prop.putHTML("showitems_docs", channel == null ? "" : channel.getDocs());
int i = 0;
for (final Hit item: feed) {
try {
final DigestURI messageurl = new DigestURI(item.getLink());
author = item.getAuthor();
if (author == null) author = item.getCopyright();
pubDate = item.getPubDate();
prop.put("showitems_item_" + i + "_state", sb.urlExists(ASCII.String(messageurl.hash())) != null ? 2 : RSSLoader.indexTriggered.containsKey(messageurl.hash()) ? 1 : 0);
prop.put("showitems_item_" + i + "_state_count", i);
prop.putHTML("showitems_item_" + i + "_state_guid", item.getGuid());
prop.putHTML("showitems_item_" + i + "_author", author == null ? "" : author);
prop.putHTML("showitems_item_" + i + "_title", item.getTitle());
prop.putHTML("showitems_item_" + i + "_link", messageurl.toNormalform(true));
prop.putHTML("showitems_item_" + i + "_description", item.getDescription());
prop.putHTML("showitems_item_" + i + "_language", item.getLanguage());
prop.putHTML("showitems_item_" + i + "_date", (pubDate == null) ? "" : DateFormat.getDateTimeInstance().format(pubDate));
i++;
} catch (final MalformedURLException e) {
Log.logException(e);
continue;
}
}
prop.put("showitems_item", i);
prop.put("showitems_num", i);
prop.putHTML("showitems_rss", url.toNormalform(true));
if (i > 0) {
prop.put("showload", 1);
prop.put("showload_rss", url.toNormalform(true));
}
}
return prop;
}
}
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