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139 lines
6.1 KiB
139 lines
6.1 KiB
// urls.java
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// (C) 2007 by Michael Peter Christen; mc@yacy.net, Frankfurt a. M., Germany
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// first published 22.08.2007 on http://yacy.net
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//
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// This is a part of YaCy, a peer-to-peer based web search engine
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//
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// $LastChangedDate: 2006-04-02 22:40:07 +0200 (So, 02 Apr 2006) $
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// $LastChangedRevision: 1986 $
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// $LastChangedBy: orbiter $
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//
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// LICENSE
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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import java.io.IOException;
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import java.util.Date;
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import net.yacy.cora.date.GenericFormatter;
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import net.yacy.cora.document.UTF8;
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import net.yacy.cora.protocol.RequestHeader;
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import net.yacy.kelondro.data.meta.DigestURI;
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import net.yacy.kelondro.data.meta.URIMetadataRow;
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import de.anomic.crawler.NoticedURL;
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import de.anomic.crawler.retrieval.Request;
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import de.anomic.search.Segments;
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import de.anomic.search.Switchboard;
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import de.anomic.server.serverObjects;
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import de.anomic.server.serverSwitch;
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import de.anomic.yacy.yacyNetwork;
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public class urls {
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public static serverObjects respond(final RequestHeader header, final serverObjects post, final serverSwitch env) {
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final Switchboard sb = (Switchboard) env;
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// insert default values
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final serverObjects prop = new serverObjects();
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prop.put("iam", sb.peers.mySeed().hash);
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prop.put("response", "rejected - insufficient call parameters");
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prop.put("channel_title", "");
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prop.put("channel_description", "");
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prop.put("channel_pubDate", "");
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prop.put("item", "0");
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if ((post == null) || (env == null)) return prop;
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if (!yacyNetwork.authentifyRequest(post, env)) return prop;
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if (post.get("call", "").equals("remotecrawl")) {
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// perform a remote crawl url handover
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final NoticedURL.StackType stackType = NoticedURL.StackType.LIMIT;
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int maxCount = Math.min(100, post.getInt("count", 10));
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long maxTime = Math.min(20000, Math.max(1000, post.getInt("time", 10000)));
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long timeout = System.currentTimeMillis() + maxTime;
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int c = 0;
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Request entry;
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DigestURI referrer;
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while ((maxCount > 0) &&
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(System.currentTimeMillis() < timeout) &&
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(sb.crawlQueues.noticeURL.stackSize(stackType) > 0)) {
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try {
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entry = sb.crawlQueues.noticeURL.pop(stackType, false, sb.crawler);
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} catch (final IOException e) {
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break;
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}
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if (entry == null) break;
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// find referrer, if there is one
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referrer = sb.getURL(Segments.Process.PUBLIC, entry.referrerhash());
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// place url to notice-url db
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sb.crawlQueues.delegatedURL.push(
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entry,
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sb.peers.mySeed().hash.getBytes(),
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new Date(),
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0,
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"client=____________");
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// create RSS entry
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prop.put("item_" + c + "_title", "");
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prop.putXML("item_" + c + "_link", entry.url().toNormalform(true, false));
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prop.putXML("item_" + c + "_referrer", (referrer == null) ? "" : referrer.toNormalform(true, false));
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prop.putXML("item_" + c + "_description", entry.name());
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prop.put("item_" + c + "_author", "");
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prop.put("item_" + c + "_pubDate", GenericFormatter.SHORT_SECOND_FORMATTER.format(entry.appdate()));
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prop.put("item_" + c + "_guid", entry.url().hash());
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c++;
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maxCount--;
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}
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prop.put("item", c);
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prop.putXML("response", "ok");
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}
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if (post.get("call", "").equals("urlhashlist")) {
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// retrieve a list of urls from the LURL-db by a given list of url hashes
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final String urlhashes = post.get("hashes", "");
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if (urlhashes.length() % 12 != 0) return prop;
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final int count = urlhashes.length() / 12;
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int c = 0;
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URIMetadataRow entry;
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URIMetadataRow.Components metadata;
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DigestURI referrer;
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for (int i = 0; i < count; i++) {
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entry = sb.indexSegments.urlMetadata(Segments.Process.PUBLIC).load(urlhashes.substring(12 * i, 12 * (i + 1)).getBytes(), null, 0);
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if (entry == null) continue;
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// find referrer, if there is one
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referrer = sb.getURL(Segments.Process.PUBLIC, entry.referrerHash());
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// create RSS entry
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metadata = entry.metadata();
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prop.put("item_" + c + "_title", metadata.dc_title());
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prop.putXML("item_" + c + "_link", metadata.url().toNormalform(true, false));
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prop.putXML("item_" + c + "_referrer", (referrer == null) ? "" : referrer.toNormalform(true, false));
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prop.putXML("item_" + c + "_description", metadata.dc_title());
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prop.put("item_" + c + "_author", metadata.dc_creator());
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prop.put("item_" + c + "_pubDate", GenericFormatter.SHORT_SECOND_FORMATTER.format(entry.moddate()));
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prop.put("item_" + c + "_guid", UTF8.String(entry.hash()));
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c++;
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}
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prop.put("item", c);
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prop.putXML("response", "ok");
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}
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// return rewrite properties
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return prop;
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}
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}
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