mirror of
https://github.com/yacy/yacy_search_server.git
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dc0c06e43d
redesign for better IO performance enhanced database seek-time by avoiding write operations at distant positions of a database file. until now, a USEDC counter was written at the head-section of a kelondroRecords database file (which is the basic data structure of all kelondro database files) to store the actual number of records that are contained in the database. Now, this value is computed from the database file size. This is either done only once at start-time, or continuously when run in asserts enabled. The counter is then updated only in RAM, and written at close of the file. If the close fails, the correct number can be computed from the file size, and if this is not equal to the stored number it is a strong evidence that YaCY was not shut down properly. To preserve consistency, the complete storage-routine had to be re-written. Another change enhances read of nodes in some cases, where the data-tail can be read together with the data-head. This saves another IO lookup during each DB node fetch. Includes also many small bugfixes. IF ANYTHING GOES WRONG, ALL YOUR DATA IS LOST: PLEASE MAKE A BACK-UP git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@3375 6c8d7289-2bf4-0310-a012-ef5d649a1542
309 lines
14 KiB
Java
309 lines
14 KiB
Java
// CacheAdmin_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
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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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//
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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 CacheAdmin_p.java
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// if the shell's current path is HTROOT
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/* changes by [FB], 19.12.2006:
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* - removed HTML code from .java file in favour of the corresponding .html
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*/
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import java.io.File;
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import java.io.Writer;
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import java.util.Iterator;
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import java.util.Map;
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import java.util.TreeSet;
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import de.anomic.htmlFilter.htmlFilterContentScraper;
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import de.anomic.htmlFilter.htmlFilterImageEntry;
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import de.anomic.htmlFilter.htmlFilterWriter;
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import de.anomic.http.httpHeader;
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import de.anomic.net.URL;
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import de.anomic.plasma.plasmaParserDocument;
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import de.anomic.plasma.plasmaSwitchboard;
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import de.anomic.plasma.cache.IResourceInfo;
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import de.anomic.server.serverFileUtils;
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import de.anomic.server.serverObjects;
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import de.anomic.server.serverSwitch;
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public class CacheAdmin_p {
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public static final String thisHtmlFile = "CacheAdmin_p.html";
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private static final int TypeDIR = 1;
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private static final int TypeFILE = 0;
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private static final int HtmlFile = 0;
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private static final int NotCached = 1;
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private static final int Image = 2;
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public static serverObjects respond(httpHeader header, serverObjects post, serverSwitch env) {
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final plasmaSwitchboard switchboard = (plasmaSwitchboard) env;
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final serverObjects prop = new serverObjects();
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final String action = ((post == null) ? "info" : post.get("action", "info"));
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String pathString = ((post == null) ? "" : post.get("path", "/"));
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// String pathString = ((post == null) ? "" : post.get("path", "/").replaceAll("//", "/")); // where is the BUG ?
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// don't leave the htCachePath
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File file = new File(switchboard.htCachePath, pathString);
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try {
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if (!file.getCanonicalPath().startsWith(switchboard.htCachePath.getCanonicalPath())) {
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pathString = "/";
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file = new File(switchboard.htCachePath, pathString);
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}
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} catch (Exception e) {
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pathString = "/";
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file = new File(switchboard.htCachePath, pathString);
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}
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final StringBuffer path = new StringBuffer(256);
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final StringBuffer tree = new StringBuffer();
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final StringBuffer info = new StringBuffer();
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final URL url = switchboard.cacheManager.getURL(file);
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String urlstr = "";
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if (action.equals("info") && !file.isDirectory()) { // normal file
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prop.put("info", TypeFILE);
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// path.append((pathString.length() == 0) ? linkPathString("/", true) : linkPathString(pathString, false));
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linkPathString(prop, ((pathString.length() == 0) ? ("/") : (pathString)), true);
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urlstr = url.toNormalform();
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prop.put("info_url", urlstr);
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info.ensureCapacity(10000);
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try {
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final IResourceInfo resInfo = switchboard.cacheManager.loadResourceInfo(url);
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formatHeader(prop, resInfo.getMap());
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final String ff = file.toString();
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final int dotpos = ff.lastIndexOf('.');
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final String ext = (dotpos >= 0) ? ff.substring(dotpos + 1).toLowerCase() : "";
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if (ext.equals("gif") || ext.equals("jpg") ||
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ext.equals("png") || ext.equals("jpeg")) {
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prop.put("info_type", Image);
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prop.put("info_type_src", pathString);
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} else {
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prop.put("info_type", HtmlFile);
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// fill the htmlFilerContentScraper object with the contents of the cached file
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// to retrieve all needed information
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final htmlFilterContentScraper scraper = new htmlFilterContentScraper(url);
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//final OutputStream os = new htmlFilterOutputStream(null, scraper, null, false);
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Writer writer = new htmlFilterWriter(null,null,scraper,null,false);
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String sourceCharset = resInfo.getCharacterEncoding();
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if (sourceCharset == null) sourceCharset = "UTF-8";
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String mimeType = resInfo.getMimeType();
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serverFileUtils.copy(file, sourceCharset, writer);
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writer.close();
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final plasmaParserDocument document = switchboard.parser.transformScraper(url, mimeType, sourceCharset, scraper);
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prop.put("info_type_title", scraper.getTitle());
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int i;
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String[] t = document.getSectionTitles();
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prop.put("info_type_headlines", t.length);
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for (i = 0; i < t.length; i++)
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prop.put("info_type_headlines_" + i + "_headline",
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de.anomic.data.wikiCode.replaceXMLEntities(t[i].replaceAll("\n", "").trim()));
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formatAnchor(prop, document.getHyperlinks(), "links");
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formatImageAnchor(prop, document.getImages());
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formatAnchor(prop, document.getAudiolinks(), "audio");
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formatAnchor(prop, document.getVideolinks(), "video");
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formatAnchor(prop, document.getApplinks(), "apps");
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formatAnchor(prop, document.getEmaillinks(), "email");
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prop.put("info_type_text",
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de.anomic.data.wikiCode.replaceXMLEntities(new String(scraper.getText())));
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i = 0;
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final Iterator sentences = document.getSentences(false);
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if (sentences != null)
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while (sentences.hasNext()) {
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prop.put("info_type_lines_" + i + "_line",
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de.anomic.data.wikiCode.replaceXMLEntities((new String((StringBuffer) sentences.next())).replaceAll("\n", "").trim()));
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i++;
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}
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prop.put("info_type_lines", i);
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if (document != null) document.close();
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}
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} catch (Exception e) {
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prop.put("info_type", NotCached);
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}
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} else {
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prop.put("info", TypeDIR);
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File dir;
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if (file.isDirectory()) {
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dir = file;
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} else {
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dir = file.getParentFile();
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pathString = (new File(pathString)).getParent().replace('\\','/');
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}
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// generate sorted dir/file listing
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final String[] list = dir.list();
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tree.ensureCapacity((list == null) ? 70 : (list.length + 1) * 256);
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linkPathString(prop, ((pathString.length() == 0) ? ("/") : (pathString)), true);
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if (list == null) {
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prop.put("info_empty", 1);
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} else {
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prop.put("info_empty", 0);
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final TreeSet dList = new TreeSet();
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final TreeSet fList = new TreeSet();
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File object;
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int size = list.length - 1, i = size;
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for (; i >= 0 ; i--) { // Rueckwaerts ist schneller
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object = new File(dir, list[i]);
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if (!object.getName().equalsIgnoreCase("responseHeader.db")) {
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if (object.isDirectory())
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dList.add(list[i]);
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else
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fList.add(list[i]);
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}
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}
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Iterator iter = dList.iterator();
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i = 0;
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prop.put("info_treeFolders", dList.size());
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while (iter.hasNext()) {
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prop.put("info_treeFolders_" + i + "_path", pathString);
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prop.put("info_treeFolders_" + i + "_name", iter.next().toString());
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i++;
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}
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i = 0;
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iter = fList.iterator();
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prop.put("info_treeFiles", fList.size());
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while (iter.hasNext()) {
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prop.put("info_treeFiles_" + i + "_path", pathString);
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prop.put("info_treeFiles_" + i + "_name", iter.next().toString());
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i++;
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}
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}
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}
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prop.put("cachesize", Long.toString(switchboard.cacheManager.curCacheSize/1024));
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prop.put("cachemax", Long.toString(switchboard.cacheManager.maxCacheSize/1024));
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prop.put("path", path.toString());
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prop.put("info_info", info.toString());
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/* prop.put("info_tree", tree.toString()); */
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// return rewrite properties
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return prop;
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}
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private static void formatHeader(serverObjects prop, Map header) {
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if (header == null) {
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prop.put("info_header", 0);
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} else {
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prop.put("info_header", 1);
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int i = 0;
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final Iterator iter = header.entrySet().iterator();
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Map.Entry entry;
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while (iter.hasNext()) {
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entry = (Map.Entry) iter.next();
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prop.put("info_header_line_" + i + "_property", entry.getKey());
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prop.put("info_header_line_" + i + "_value", entry.getValue());
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i++;
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}
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prop.put("info_header_line", i);
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}
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}
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private static void formatAnchor(serverObjects prop, Map anchor, String extension) {
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final Iterator iter = anchor.entrySet().iterator();
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String descr;
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Map.Entry entry;
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prop.put("info_type_use." + extension + "_" + extension, anchor.size());
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int i = 0;
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while (iter.hasNext()) {
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entry = (Map.Entry) iter.next();
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descr = ((String) entry.getValue()).trim();
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if (descr.length() == 0) { descr = "-"; }
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prop.put("info_type_use." + extension + "_" + extension + "_" + i + "_name",
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de.anomic.data.wikiCode.replaceXMLEntities(descr.replaceAll("\n", "").trim()));
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prop.put("info_type_use." + extension + "_" + extension + "_" + i + "_link",
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de.anomic.data.wikiCode.replaceXMLEntities(entry.getKey().toString()));
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i++;
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}
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prop.put("info_type_use." + extension, (i == 0) ? 0 : 1);
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}
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private static void formatImageAnchor(serverObjects prop, TreeSet anchor) {
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final Iterator iter = anchor.iterator();
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htmlFilterImageEntry ie;
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prop.put("info_type_use.images_images", anchor.size());
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int i = 0;
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while (iter.hasNext()) {
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ie = (htmlFilterImageEntry) iter.next();
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prop.put("info_type_use.images_images_" + i + "_name", ie.alt().replaceAll("\n", "").trim());
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prop.put("info_type_use.images_images_" + i + "_link",
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de.anomic.data.wikiCode.replaceXMLEntities(ie.url().toNormalform()));
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i++;
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}
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prop.put("info_type_use.images", (i == 0) ? 0 : 1);
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}
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private static void linkPathString(serverObjects prop, String path, boolean dir) {
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final String[] elements = path.split("/");
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String dirs = "";
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int i, e, count = 0;
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if (dir) { e = elements.length; } else { e = elements.length - 1; }
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for(i = 0; i < e; i++) {
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if (elements[i].length() == 0) continue;
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prop.put("paths_" + count + "_path", dirs);
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prop.put("paths_" + count + "_name", elements[i]);
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dirs += "/" + elements[i];
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count++;
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}
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prop.put("paths", count);
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return;
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}
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}
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