Source Code Cross Referenced for abstractURLPattern.java in  » Search-Engine » yacy » de » anomic » plasma » urlPattern » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Search Engine » yacy » de.anomic.plasma.urlPattern 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        // abstractURLPattern.java 
002:        // -----------------------
003:        // part of YaCy
004:        // (C) by Michael Peter Christen; mc@anomic.de
005:        // first published on http://www.anomic.de
006:        // Frankfurt, Germany, 2005
007:        // (C) 2007 by Bjoern Krombholz
008:        // last major change: 12. August 2006 (theli) ?
009:        //
010:        // $LastChangedDate: 2008-01-23 23:08:32 +0000 (Mi, 23 Jan 2008) $
011:        // $LastChangedRevision: 4382 $
012:        // $LastChangedBy: orbiter $
013:        //
014:        // This program is free software; you can redistribute it and/or modify
015:        // it under the terms of the GNU General Public License as published by
016:        // the Free Software Foundation; either version 2 of the License, or
017:        // (at your option) any later version.
018:        //
019:        // This program is distributed in the hope that it will be useful,
020:        // but WITHOUT ANY WARRANTY; without even the implied warranty of
021:        // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
022:        // GNU General Public License for more details.
023:        //
024:        // You should have received a copy of the GNU General Public License
025:        // along with this program; if not, write to the Free Software
026:        // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
027:        //
028:        // Using this software in any meaning (reading, learning, copying, compiling,
029:        // running) means that you agree that the Author(s) is (are) not responsible
030:        // for cost, loss of data or any harm that may be caused directly or indirectly
031:        // by usage of this softare or this documentation. The usage of this software
032:        // is on your own risk. The installation and usage (starting/running) of this
033:        // software may allow other people or application to access your computer and
034:        // any attached devices and is highly dependent on the configuration of the
035:        // software which must be done by the user of the software; the author(s) is
036:        // (are) also not responsible for proper configuration and usage of the
037:        // software, even if provoked by documentation provided together with
038:        // the software.
039:        //
040:        // Any changes to this file according to the GPL as documented in the file
041:        // gpl.txt aside this file in the shipment you received can be done to the
042:        // lines that follows this copyright notice here, but changes must not be
043:        // done inside the copyright notive above. A re-distribution must contain
044:        // the intact and unchanged copyright notice.
045:        // Contributions and changes to the program code must be marked as such.
046:
047:        package de.anomic.plasma.urlPattern;
048:
049:        import java.io.File;
050:        import java.io.IOException;
051:        import java.util.ArrayList;
052:        import java.util.Arrays;
053:        import java.util.Collections;
054:        import java.util.HashMap;
055:        import java.util.HashSet;
056:        import java.util.Iterator;
057:        import java.util.Map;
058:        import java.util.Set;
059:        import de.anomic.kelondro.kelondroMSetTools;
060:        import de.anomic.yacy.yacyURL;
061:
062:        public abstract class abstractURLPattern implements  plasmaURLPattern {
063:
064:            protected static final HashSet<String> BLACKLIST_TYPES = new HashSet<String>(
065:                    Arrays.asList(new String[] {
066:                            plasmaURLPattern.BLACKLIST_CRAWLER,
067:                            plasmaURLPattern.BLACKLIST_PROXY,
068:                            plasmaURLPattern.BLACKLIST_DHT,
069:                            plasmaURLPattern.BLACKLIST_SEARCH,
070:                            plasmaURLPattern.BLACKLIST_SURFTIPS,
071:                            plasmaURLPattern.BLACKLIST_NEWS }));
072:            public static final String BLACKLIST_TYPES_STRING = "proxy,crawler,dht,search,surftips,news";
073:
074:            protected File blacklistRootPath = null;
075:            protected HashMap<String, Set<String>> cachedUrlHashs = null;
076:            protected HashMap<String, HashMap<String, ArrayList<String>>> hostpaths = null; // key=host, value=path; mapped url is http://host/path; path does not start with '/' here
077:
078:            public abstractURLPattern(File rootPath) {
079:                this .setRootPath(rootPath);
080:
081:                this .blacklistRootPath = rootPath;
082:
083:                // prepare the data structure
084:                this .hostpaths = new HashMap<String, HashMap<String, ArrayList<String>>>();
085:                this .cachedUrlHashs = new HashMap<String, Set<String>>();
086:
087:                Iterator<String> iter = BLACKLIST_TYPES.iterator();
088:                while (iter.hasNext()) {
089:                    String blacklistType = (String) iter.next();
090:                    this .hostpaths.put(blacklistType,
091:                            new HashMap<String, ArrayList<String>>());
092:                    this .cachedUrlHashs.put(blacklistType, Collections
093:                            .synchronizedSet(new HashSet<String>()));
094:                }
095:            }
096:
097:            public void setRootPath(File rootPath) {
098:                if (rootPath == null)
099:                    throw new NullPointerException(
100:                            "The blacklist root path must not be null.");
101:                if (!rootPath.isDirectory())
102:                    throw new IllegalArgumentException(
103:                            "The blacklist root path is not a directory.");
104:                if (!rootPath.canRead())
105:                    throw new IllegalArgumentException(
106:                            "The blacklist root path is not readable.");
107:
108:                this .blacklistRootPath = rootPath;
109:            }
110:
111:            protected HashMap<String, ArrayList<String>> getBlacklistMap(
112:                    String blacklistType) {
113:                if (blacklistType == null)
114:                    throw new IllegalArgumentException();
115:                if (!BLACKLIST_TYPES.contains(blacklistType))
116:                    throw new IllegalArgumentException(
117:                            "Unknown blacklist type: " + blacklistType + ".");
118:
119:                return this .hostpaths.get(blacklistType);
120:            }
121:
122:            protected Set<String> getCacheUrlHashsSet(String blacklistType) {
123:                if (blacklistType == null)
124:                    throw new IllegalArgumentException();
125:                if (!BLACKLIST_TYPES.contains(blacklistType))
126:                    throw new IllegalArgumentException("Unknown backlist type.");
127:
128:                return this .cachedUrlHashs.get(blacklistType);
129:            }
130:
131:            public void clear() {
132:                Iterator<HashMap<String, ArrayList<String>>> iter = this .hostpaths
133:                        .values().iterator();
134:                Iterator<Set<String>> cIter = this .cachedUrlHashs.values()
135:                        .iterator();
136:                while (iter.hasNext()) {
137:                    iter.next().clear();
138:                }
139:                while (cIter.hasNext()) {
140:                    // clear caches as well to avoid wrong/outdated matches after changing lists
141:                    cIter.next().clear();
142:                }
143:            }
144:
145:            public int size() {
146:                int size = 0;
147:                Iterator<String> iter = this .hostpaths.keySet().iterator();
148:                while (iter.hasNext()) {
149:                    Iterator<ArrayList<String>> blIter = this .hostpaths.get(
150:                            iter.next()).values().iterator();
151:                    while (blIter.hasNext())
152:                        size += blIter.next().size();
153:                }
154:                return size;
155:            }
156:
157:            public void loadList(blacklistFile[] blFiles, String sep) {
158:                for (int j = 0; j < blFiles.length; j++) {
159:                    blacklistFile blf = blFiles[j];
160:                    loadList(blf.getType(), blf.getFileName(), sep);
161:                }
162:            }
163:
164:            public void loadList(blacklistFile blFile, String sep) {
165:                HashMap<String, ArrayList<String>> blacklistMap = getBlacklistMap(blFile
166:                        .getType());
167:                Set<Map.Entry<String, ArrayList<String>>> loadedBlacklist;
168:                Map.Entry<String, ArrayList<String>> loadedEntry;
169:                ArrayList<String> paths;
170:                ArrayList<String> loadedPaths;
171:
172:                String[] fileNames = blFile.getFileNamesUnified();
173:                if (fileNames.length > 0) {
174:                    for (int i = 0; i < fileNames.length; i++) {
175:                        // make sure all requested blacklist files exist
176:                        File file = new File(this .blacklistRootPath,
177:                                fileNames[i]);
178:                        try {
179:                            file.createNewFile();
180:                        } catch (IOException e) { /* */
181:                        }
182:
183:                        // join all blacklists from files into one internal blacklist map
184:                        loadedBlacklist = kelondroMSetTools
185:                                .loadMapMultiValsPerKey(file.toString(), sep)
186:                                .entrySet();
187:                        for (Iterator<Map.Entry<String, ArrayList<String>>> mi = loadedBlacklist
188:                                .iterator(); mi.hasNext();) {
189:                            loadedEntry = mi.next();
190:                            loadedPaths = loadedEntry.getValue();
191:
192:                            // create new entry if host mask unknown, otherwise merge
193:                            // existing one with path patterns from blacklist file 
194:                            paths = blacklistMap.get(loadedEntry.getKey());
195:                            if (paths == null) {
196:                                blacklistMap.put(loadedEntry.getKey(),
197:                                        loadedPaths);
198:                            } else {
199:                                // TODO check for duplicates? (refactor List -> Set)
200:                                paths.addAll(loadedPaths);
201:                            }
202:                        }
203:                    }
204:                }
205:            }
206:
207:            public void loadList(String blacklistType, String fileNames,
208:                    String sep) {
209:                // method for not breaking older plasmaURLPattern interface
210:                blacklistFile blFile = new blacklistFile(fileNames,
211:                        blacklistType);
212:
213:                loadList(blFile, sep);
214:            }
215:
216:            public void removeAll(String blacklistType, String host) {
217:                HashMap<String, ArrayList<String>> blacklistMap = getBlacklistMap(blacklistType);
218:                blacklistMap.remove(host);
219:            }
220:
221:            public void remove(String blacklistType, String host, String path) {
222:                HashMap<String, ArrayList<String>> blacklistMap = getBlacklistMap(blacklistType);
223:                ArrayList<String> hostList = blacklistMap.get(host);
224:                hostList.remove(path);
225:                if (hostList.size() == 0)
226:                    blacklistMap.remove(host);
227:            }
228:
229:            public void add(String blacklistType, String host, String path) {
230:                if (host == null)
231:                    throw new NullPointerException();
232:                if (path == null)
233:                    throw new NullPointerException();
234:
235:                if (path.length() > 0 && path.charAt(0) == '/')
236:                    path = path.substring(1);
237:
238:                HashMap<String, ArrayList<String>> blacklistMap = getBlacklistMap(blacklistType);
239:                ArrayList<String> hostList = blacklistMap.get(host
240:                        .toLowerCase());
241:                if (hostList == null)
242:                    blacklistMap.put(host.toLowerCase(),
243:                            (hostList = new ArrayList<String>()));
244:                hostList.add(path);
245:            }
246:
247:            public int blacklistCacheSize() {
248:                int size = 0;
249:                Iterator<String> iter = this .cachedUrlHashs.keySet().iterator();
250:                while (iter.hasNext()) {
251:                    Set<String> blacklistMap = this .cachedUrlHashs.get(iter
252:                            .next());
253:                    size += blacklistMap.size();
254:                }
255:                return size;
256:            }
257:
258:            public boolean hashInBlacklistedCache(String blacklistType,
259:                    String urlHash) {
260:                Set<String> urlHashCache = getCacheUrlHashsSet(blacklistType);
261:                return urlHashCache.contains(urlHash);
262:            }
263:
264:            public boolean isListed(String blacklistType, yacyURL url) {
265:
266:                Set<String> urlHashCache = getCacheUrlHashsSet(blacklistType);
267:                if (!urlHashCache.contains(url.hash())) {
268:                    boolean temp = isListed(blacklistType, url.getHost()
269:                            .toLowerCase(), url.getFile());
270:                    if (temp) {
271:                        urlHashCache.add(url.hash());
272:                    }
273:                    return temp;
274:                }
275:                return true;
276:            }
277:
278:        }
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