mirror of
https://github.com/yacy/yacy_search_server.git
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1995faef8d
- renamed also the plasmaCrawlResults to have a consistent naming for url and image queues - added a double-check for the images - added additional queues for the images: all worse-quality images go there, so the queue can be used also if no sizes are given; no image is lost - added a cleanup for the stacks so they cannot flood the memory git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@4722 6c8d7289-2bf4-0310-a012-ef5d649a1542
194 lines
9.6 KiB
Java
194 lines
9.6 KiB
Java
// plasmaCrawlLURL.java
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// -----------------------
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// part of YaCy
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// (C) by Michael Peter Christen; mc@yacy.net
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// first published on http://yacy.net
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// Frankfurt, Germany, 2004
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//
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// $LastChangedDate: 2008-03-16 23:31:54 +0100 (So, 16 Mrz 2008) $
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// $LastChangedRevision: 4575 $
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// $LastChangedBy: orbiter $
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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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/*
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This class provides storage functions for the plasma search engine.
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- the url-specific properties, including condenser results
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- the text content of the url
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Both entities are accessed with a hash, which is based on the MD5
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algorithm. The MD5 is not encoded as a hex value, but a b64 value.
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*/
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package de.anomic.plasma;
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import java.util.LinkedList;
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import de.anomic.index.indexURLReference;
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import de.anomic.yacy.yacySeedDB;
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import de.anomic.yacy.yacyURL;
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public final class plasmaCrawlResultURLs {
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// result stacks;
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// these have all entries of form
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// strings: urlHash + initiatorHash + ExecutorHash
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private final LinkedList<String> externResultStack; // 1 - remote index: retrieved by other peer
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private final LinkedList<String> searchResultStack; // 2 - partly remote/local index: result of search queries
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private final LinkedList<String> transfResultStack; // 3 - partly remote/local index: result of index transfer
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private final LinkedList<String> proxyResultStack; // 4 - local index: result of proxy fetch/prefetch
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private final LinkedList<String> lcrawlResultStack; // 5 - local index: result of local crawling
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private final LinkedList<String> gcrawlResultStack; // 6 - local index: triggered external
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public plasmaCrawlResultURLs() {
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// init result stacks
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externResultStack = new LinkedList<String>();
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searchResultStack = new LinkedList<String>();
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transfResultStack = new LinkedList<String>();
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proxyResultStack = new LinkedList<String>();
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lcrawlResultStack = new LinkedList<String>();
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gcrawlResultStack = new LinkedList<String>();
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}
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public synchronized void stack(indexURLReference e, String initiatorHash, String executorHash, int stackType) {
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if (e == null) { return; }
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try {
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if (initiatorHash == null) { initiatorHash = yacyURL.dummyHash; }
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if (executorHash == null) { executorHash = yacyURL.dummyHash; }
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switch (stackType) {
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case 0: break;
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case 1: externResultStack.add(e.hash() + initiatorHash + executorHash); break;
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case 2: searchResultStack.add(e.hash() + initiatorHash + executorHash); break;
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case 3: transfResultStack.add(e.hash() + initiatorHash + executorHash); break;
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case 4: proxyResultStack.add(e.hash() + initiatorHash + executorHash); break;
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case 5: lcrawlResultStack.add(e.hash() + initiatorHash + executorHash); break;
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case 6: gcrawlResultStack.add(e.hash() + initiatorHash + executorHash); break;
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}
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return;
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} catch (Exception ex) {
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System.out.println("INTERNAL ERROR in newEntry/2: " + ex.toString());
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return;
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}
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}
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public synchronized void notifyGCrawl(String urlHash, String initiatorHash, String executorHash) {
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gcrawlResultStack.add(urlHash + initiatorHash + executorHash);
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}
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public synchronized int getStackSize(int stack) {
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switch (stack) {
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case 1: return externResultStack.size();
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case 2: return searchResultStack.size();
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case 3: return transfResultStack.size();
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case 4: return proxyResultStack.size();
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case 5: return lcrawlResultStack.size();
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case 6: return gcrawlResultStack.size();
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}
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return -1;
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}
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public synchronized String getUrlHash(int stack, int pos) {
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switch (stack) {
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case 1: return ((String) externResultStack.get(pos)).substring(0, yacySeedDB.commonHashLength);
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case 2: return ((String) searchResultStack.get(pos)).substring(0, yacySeedDB.commonHashLength);
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case 3: return ((String) transfResultStack.get(pos)).substring(0, yacySeedDB.commonHashLength);
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case 4: return ((String) proxyResultStack.get(pos)).substring(0, yacySeedDB.commonHashLength);
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case 5: return ((String) lcrawlResultStack.get(pos)).substring(0, yacySeedDB.commonHashLength);
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case 6: return ((String) gcrawlResultStack.get(pos)).substring(0, yacySeedDB.commonHashLength);
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}
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return null;
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}
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public synchronized String getInitiatorHash(int stack, int pos) {
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switch (stack) {
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case 1: return ((String) externResultStack.get(pos)).substring(yacySeedDB.commonHashLength, yacySeedDB.commonHashLength * 2);
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case 2: return ((String) searchResultStack.get(pos)).substring(yacySeedDB.commonHashLength, yacySeedDB.commonHashLength * 2);
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case 3: return ((String) transfResultStack.get(pos)).substring(yacySeedDB.commonHashLength, yacySeedDB.commonHashLength * 2);
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case 4: return ((String) proxyResultStack.get(pos)).substring(yacySeedDB.commonHashLength, yacySeedDB.commonHashLength * 2);
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case 5: return ((String) lcrawlResultStack.get(pos)).substring(yacySeedDB.commonHashLength, yacySeedDB.commonHashLength * 2);
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case 6: return ((String) gcrawlResultStack.get(pos)).substring(yacySeedDB.commonHashLength, yacySeedDB.commonHashLength * 2);
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}
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return null;
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}
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public synchronized String getExecutorHash(int stack, int pos) {
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switch (stack) {
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case 1: return ((String) externResultStack.get(pos)).substring(yacySeedDB.commonHashLength * 2, yacySeedDB.commonHashLength * 3);
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case 2: return ((String) searchResultStack.get(pos)).substring(yacySeedDB.commonHashLength * 2, yacySeedDB.commonHashLength * 3);
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case 3: return ((String) transfResultStack.get(pos)).substring(yacySeedDB.commonHashLength * 2, yacySeedDB.commonHashLength * 3);
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case 4: return ((String) proxyResultStack.get(pos)).substring(yacySeedDB.commonHashLength * 2, yacySeedDB.commonHashLength * 3);
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case 5: return ((String) lcrawlResultStack.get(pos)).substring(yacySeedDB.commonHashLength * 2, yacySeedDB.commonHashLength * 3);
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case 6: return ((String) gcrawlResultStack.get(pos)).substring(yacySeedDB.commonHashLength * 2, yacySeedDB.commonHashLength * 3);
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}
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return null;
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}
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public synchronized boolean removeStack(int stack, int pos) {
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Object prevElement = null;
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switch (stack) {
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case 1: prevElement = externResultStack.remove(pos); break;
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case 2: prevElement = searchResultStack.remove(pos); break;
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case 3: prevElement = transfResultStack.remove(pos); break;
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case 4: prevElement = proxyResultStack.remove(pos); break;
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case 5: prevElement = lcrawlResultStack.remove(pos); break;
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case 6: prevElement = gcrawlResultStack.remove(pos); break;
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}
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return prevElement != null;
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}
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public synchronized void clearStack(int stack) {
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switch (stack) {
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case 1: externResultStack.clear(); break;
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case 2: searchResultStack.clear(); break;
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case 3: transfResultStack.clear(); break;
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case 4: proxyResultStack.clear(); break;
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case 5: lcrawlResultStack.clear(); break;
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case 6: gcrawlResultStack.clear(); break;
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}
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}
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public synchronized boolean remove(String urlHash) {
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if (urlHash == null) return false;
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for (int stack = 1; stack <= 6; stack++) {
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for (int i = getStackSize(stack) - 1; i >= 0; i--) {
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if (getUrlHash(stack, i).equals(urlHash)) {
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removeStack(stack, i);
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return true;
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}
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}
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}
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return true;
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}
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}
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