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yacy_search_server/htroot/Load_RSS_p.java
Michael Peter Christen 788288eb9e added the generation of 50 (!!) new solr field in the core 'webgraph'. 
The default schema uses only some of them and the resting search index
has now the following properties:
- webgraph size will have about 40 times as much entries as default
index
- the complete index size will increase and may be about the double size
of current amount
As testing showed, not much indexing performance is lost. The default
index will be smaller (moved fields out of it); thus searching
can be faster.
The new index will cause that some old parts in YaCy can be removed,
i.e. specialized webgraph data and the noload crawler. The new index
will make it possible to:
- search within link texts of linked but not indexed documents (about 20
times of document index in size!!)
- get a very detailed link graph
- enhance ranking using a complete link graph

To get the full access to the new index, the API to solr has now two
access points: one with attribute core=collection1 for the default
search index and core=webgraph to the new webgraph search index. This is
also avaiable for p2p operation but client access is not yet
implemented.
2013-02-22 15:45:15 +01:00

349 lines
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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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