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https://github.com/yacy/yacy_search_server.git
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765943a4b7
in intranets and the internet can now choose to appear as Googlebot. This is an essential necessity to be able to compete in the field of commercial search appliances, since most web pages are these days optimized only for Google and no other search platform any more. All commercial search engine providers have a built-in fake-Google User Agent to be able to get the same search index as Google can do. Without the resistance against obeying to robots.txt in this case, no competition is possible any more. YaCy will always obey the robots.txt when it is used for crawling the web in a peer-to-peer network, but to establish a Search Appliance (like a Google Search Appliance, GSA) it is necessary to be able to behave exactly like a Google crawler. With this change, you will be able to switch the user agent when portal or intranet mode is selected on per-crawl-start basis. Every crawl start can have a different user agent.
167 lines
5.5 KiB
Java
167 lines
5.5 KiB
Java
// loaderThreads.java
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// ---------------------------
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// (C) by Michael Peter Christen; mc@yacy.net
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// first published on http://www.anomic.de
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// Frankfurt, Germany, 2004
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//
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// $LastChangedDate$
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// $LastChangedRevision$
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// $LastChangedBy$
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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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package net.yacy.utils;
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import java.util.HashMap;
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import java.util.Map;
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import net.yacy.cora.protocol.ClientIdentification;
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import net.yacy.cora.protocol.http.ProxySettings;
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import net.yacy.kelondro.data.meta.DigestURI;
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public class loaderThreads {
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// global values for loader threads
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protected int timeout;
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protected String user;
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protected String password;
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protected ProxySettings remoteProxyConfig;
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// management objects for collection of threads
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private final Map<String, Thread> threads;
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private int completed, failed;
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public loaderThreads() {
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this(10000, null, null);
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}
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public loaderThreads(
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final int timeout,
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final String user,
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final String password
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) {
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this.timeout = timeout;
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this.user = user;
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this.password = password;
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this.threads = new HashMap<String, Thread>();
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this.completed = 0;
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this.failed = 0;
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}
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public void newThread(final String name, final DigestURI url, final loaderProcess process, final ClientIdentification.Agent agent) {
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final Thread t = new loaderThread(url, process, agent);
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this.threads.put(name, t);
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t.start();
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}
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public void terminateThread(final String name) {
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final loaderThread t = (loaderThread) this.threads.get(name);
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if (t == null) throw new RuntimeException("no such thread: " + name);
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t.terminate();
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}
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public int threadCompleted(final String name) {
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final loaderThread t = (loaderThread) this.threads.get(name);
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if (t == null) throw new RuntimeException("no such thread: " + name);
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return t.completed();
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}
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public int threadStatus(final String name) {
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final loaderThread t = (loaderThread) this.threads.get(name);
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if (t == null) throw new RuntimeException("no such thread: " + name);
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return t.status();
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}
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public int completed() {
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return this.completed;
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}
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public int failed() {
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return this.failed;
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}
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public int count() {
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return this.threads.size();
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}
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public Exception threadError(final String name) {
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final loaderThread t = (loaderThread) this.threads.get(name);
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if (t == null) throw new RuntimeException("no such thread: " + name);
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return t.error();
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}
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protected class loaderThread extends Thread {
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private final DigestURI url;
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private Exception error;
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private final loaderProcess process;
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private byte[] page;
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private boolean loaded;
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final ClientIdentification.Agent agent;
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public loaderThread(final DigestURI url, final loaderProcess process, final ClientIdentification.Agent agent) {
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this.url = url;
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this.process = process;
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this.error = null;
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this.page = null;
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this.loaded = false;
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this.agent = agent;
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}
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@Override
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public void run() {
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try {
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this.page = this.url.get(this.agent);
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this.loaded = true;
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this.process.feed(this.page);
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if (this.process.status() == loaderCore.STATUS_FAILED) {
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this.error = this.process.error();
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}
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if ((this.process.status() == loaderCore.STATUS_COMPLETED) ||
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(this.process.status() == loaderCore.STATUS_FINALIZED)) loaderThreads.this.completed++;
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if ((this.process.status() == loaderCore.STATUS_ABORTED) ||
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(this.process.status() == loaderCore.STATUS_FAILED)) loaderThreads.this.failed++;
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} catch (final Exception e) {
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this.error = e;
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loaderThreads.this.failed++;
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}
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}
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public void terminate() {
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this.process.terminate();
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}
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public boolean loaded() {
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return this.loaded;
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}
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public int completed() {
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if (this.process.status() == loaderCore.STATUS_READY) return 1;
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if (this.process.status() == loaderCore.STATUS_RUNNING) return 9 + ((this.process.completed() * 9) / 10);
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if (this.process.status() == loaderCore.STATUS_COMPLETED) return 100;
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return 0;
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}
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public int status() {
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return this.process.status(); // see constants in loaderCore
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}
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public Exception error() {
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return this.error;
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}
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}
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}
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