mirror of
https://github.com/yacy/yacy_search_server.git
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a31b9097a4
two main changes must be implemented to enable mass remote crawls: - shift control of robots.txt to crawl queue (away from stacker). This is necessary since remote crawls can contain unchecked urls. Each peer must check the robots to prevent that it is misused as crawl agent for unwanted file retrieval - implement new index files that control double-check of remotely crawled urls After removal of robots.txt checking from stacker threads, the multi-threading of this process is void. Multithreading has been removed. Also the thread pools for the crawl threads had been removed, since creation of these threads is not resource-consuming, for a detailed explanation see svn 4106 git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@4181 6c8d7289-2bf4-0310-a012-ef5d649a1542
210 lines
11 KiB
Java
210 lines
11 KiB
Java
// IndexCreateWWWCrawlQueue_p.java
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// -------------------------------
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// part of the AnomicHTTPD caching proxy
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// (C) by Michael Peter Christen; mc@anomic.de
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// first published on http://www.anomic.de
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// Frankfurt, Germany, 2004, 2005
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// last major change: 04.07.2005
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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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//
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// Using this software in any meaning (reading, learning, copying, compiling,
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// running) means that you agree that the Author(s) is (are) not responsible
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// for cost, loss of data or any harm that may be caused directly or indirectly
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// by usage of this softare or this documentation. The usage of this software
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// is on your own risk. The installation and usage (starting/running) of this
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// software may allow other people or application to access your computer and
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// any attached devices and is highly dependent on the configuration of the
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// software which must be done by the user of the software; the author(s) is
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// (are) also not responsible for proper configuration and usage of the
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// software, even if provoked by documentation provided together with
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// the software.
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//
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// Any changes to this file according to the GPL as documented in the file
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// gpl.txt aside this file in the shipment you received can be done to the
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// lines that follows this copyright notice here, but changes must not be
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// done inside the copyright notive above. A re-distribution must contain
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// the intact and unchanged copyright notice.
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// Contributions and changes to the program code must be marked as such.
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// You must compile this file with
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// javac -classpath .:../classes IndexCreate_p.java
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// if the shell's current path is HTROOT
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import java.text.SimpleDateFormat;
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import java.util.Date;
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import java.util.Iterator;
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import java.util.Locale;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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import java.util.regex.PatternSyntaxException;
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import de.anomic.http.httpHeader;
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import de.anomic.plasma.plasmaCrawlEntry;
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import de.anomic.plasma.plasmaCrawlNURL;
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import de.anomic.plasma.plasmaCrawlProfile;
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import de.anomic.plasma.plasmaSwitchboard;
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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.yacyCore;
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import de.anomic.yacy.yacySeed;
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public class IndexCreateWWWLocalQueue_p {
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private static SimpleDateFormat dayFormatter = new SimpleDateFormat("yyyy/MM/dd", Locale.US);
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private static String daydate(Date date) {
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if (date == null) return "";
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return dayFormatter.format(date);
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}
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private static final int INVALID = 0;
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private static final int URL = 1;
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private static final int ANCHOR = 2;
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private static final int PROFILE = 3;
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private static final int DEPTH = 4;
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private static final int INITIATOR = 5;
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private static final int MODIFIED = 6;
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public static serverObjects respond(httpHeader header, serverObjects post, serverSwitch env) {
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// return variable that accumulates replacements
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plasmaSwitchboard sb = (plasmaSwitchboard) env;
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serverObjects prop = new serverObjects();
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int showLimit = 100;
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if (post != null) {
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if (post.containsKey("limit")) {
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try {
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showLimit = Integer.valueOf((String)post.get("limit")).intValue();
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} catch (NumberFormatException e) {}
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}
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if (post.containsKey("deleteEntries")) {
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int c = 0;
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String pattern = post.get("pattern", ".*").trim();
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final int option = post.getInt("option", INVALID);
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if (pattern.equals(".*")) {
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c = sb.crawlQueues.noticeURL.stackSize(plasmaCrawlNURL.STACK_TYPE_CORE);
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sb.crawlQueues.noticeURL.clear(plasmaCrawlNURL.STACK_TYPE_CORE);
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try { sb.cleanProfiles(); } catch (InterruptedException e) {/* ignore this */}
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} else if (option > INVALID) {
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Pattern compiledPattern = null;
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try {
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// compiling the regular expression
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compiledPattern = Pattern.compile(pattern);
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if (option == PROFILE) {
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// search and delete the crawl profile (_much_ faster, independant of queue size)
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// XXX: what to do about the annoying LOST PROFILE messages in the log?
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Iterator it = sb.profilesActiveCrawls.profiles(true);
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plasmaCrawlProfile.entry entry;
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while (it.hasNext()) {
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entry = (plasmaCrawlProfile.entry)it.next();
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final String name = entry.name();
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if (name.equals(plasmaSwitchboard.CRAWL_PROFILE_PROXY) ||
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name.equals(plasmaSwitchboard.CRAWL_PROFILE_REMOTE) ||
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name.equals(plasmaSwitchboard.CRAWL_PROFILE_SNIPPET_TEXT) ||
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name.equals(plasmaSwitchboard.CRAWL_PROFILE_SNIPPET_MEDIA))
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continue;
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if (compiledPattern.matcher(name).find()) {
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sb.profilesActiveCrawls.removeEntry(entry.handle());
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}
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}
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} else {
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// iterating through the list of URLs
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Iterator iter = sb.crawlQueues.noticeURL.iterator(plasmaCrawlNURL.STACK_TYPE_CORE);
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plasmaCrawlEntry entry;
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while (iter.hasNext()) {
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if ((entry = (plasmaCrawlEntry) iter.next()) == null) continue;
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String value = null;
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switch (option) {
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case URL: value = (entry.url() == null) ? null : entry.url().toString(); break;
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case ANCHOR: value = entry.name(); break;
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case DEPTH: value = Integer.toString(entry.depth()); break;
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case INITIATOR:
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value = (entry.initiator() == null) ? "proxy" : entry.initiator();
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break;
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case MODIFIED: value = daydate(entry.loaddate()); break;
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default: value = null;
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}
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if (value != null) {
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Matcher matcher = compiledPattern.matcher(value);
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if (matcher.find()) {
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sb.crawlQueues.noticeURL.removeByURLHash(entry.url().hash());
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}
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}
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}
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}
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} catch (PatternSyntaxException e) {
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e.printStackTrace();
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}
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}
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prop.put("info", "3");//crawling queue cleared
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prop.putNum("info_numEntries", c);
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} else if (post.containsKey("deleteEntry")) {
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String urlHash = (String) post.get("deleteEntry");
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sb.crawlQueues.noticeURL.removeByURLHash(urlHash);
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prop.put("LOCATION","");
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return prop;
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}
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}
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int showNum = 0, stackSize = sb.crawlQueues.noticeURL.stackSize(plasmaCrawlNURL.STACK_TYPE_CORE);
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if (stackSize == 0) {
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prop.put("crawler-queue", "0");
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} else {
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prop.put("crawler-queue", "1");
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plasmaCrawlEntry[] crawlerList = sb.crawlQueues.noticeURL.top(plasmaCrawlNURL.STACK_TYPE_CORE, (int) (showLimit * 1.20));
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plasmaCrawlEntry urle;
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boolean dark = true;
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yacySeed initiator;
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String profileHandle;
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plasmaCrawlProfile.entry profileEntry;
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int i;
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for (i = 0; (i < crawlerList.length) && (showNum < showLimit); i++) {
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urle = crawlerList[i];
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if ((urle != null)&&(urle.url()!=null)) {
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initiator = yacyCore.seedDB.getConnected(urle.initiator());
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profileHandle = urle.profileHandle();
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profileEntry = (profileHandle == null) ? null : sb.profilesActiveCrawls.getEntry(profileHandle);
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prop.put("crawler-queue_list_"+showNum+"_dark", dark ? "1" : "0");
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prop.put("crawler-queue_list_"+showNum+"_initiator", ((initiator == null) ? "proxy" : initiator.getName()) );
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prop.put("crawler-queue_list_"+showNum+"_profile", ((profileEntry == null) ? "unknown" : profileEntry.name()));
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prop.put("crawler-queue_list_"+showNum+"_depth", urle.depth());
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prop.put("crawler-queue_list_"+showNum+"_modified", daydate(urle.loaddate()) );
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prop.putHTML("crawler-queue_list_"+showNum+"_anchor", urle.name());
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prop.put("crawler-queue_list_"+showNum+"_url", urle.url().toNormalform(false, true));
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prop.put("crawler-queue_list_"+showNum+"_hash", urle.url().hash());
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dark = !dark;
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showNum++;
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} else {
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stackSize--;
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}
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}
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prop.putNum("crawler-queue_list", showNum);
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prop.putNum("crawler-queue_num", stackSize);//num Entries
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prop.putNum("crawler-queue_show-num", showNum); //showin sjow-num most recent
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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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