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yacy_search_server/source/de/anomic/plasma/plasmaSwitchboard.java

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// plasmaSwitchboard.java
// -----------------------
// part of YaCy
// (C) by Michael Peter Christen; mc@anomic.de
// first published on http://www.anomic.de
// Frankfurt, Germany, 2004, 2005
//
// $LastChangedDate$
// $LastChangedRevision$
// $LastChangedBy$
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// Using this software in any meaning (reading, learning, copying, compiling,
// running) means that you agree that the Author(s) is (are) not responsible
// for cost, loss of data or any harm that may be caused directly or indirectly
// by usage of this softare or this documentation. The usage of this software
// is on your own risk. The installation and usage (starting/running) of this
// software may allow other people or application to access your computer and
// any attached devices and is highly dependent on the configuration of the
// software which must be done by the user of the software; the author(s) is
// (are) also not responsible for proper configuration and usage of the
// software, even if provoked by documentation provided together with
// the software.
//
// Any changes to this file according to the GPL as documented in the file
// gpl.txt aside this file in the shipment you received can be done to the
// lines that follows this copyright notice here, but changes must not be
// done inside the copyright notive above. A re-distribution must contain
// the intact and unchanged copyright notice.
// Contributions and changes to the program code must be marked as such.
/*
This class holds the run-time environment of the plasma
Search Engine. It's data forms a blackboard which can be used
to organize running jobs around the indexing algorithm.
The blackboard consist of the following entities:
- storage: one plasmaStore object with the url-based database
- configuration: initialized by properties once, then by external functions
- job queues: for parsing, condensing, indexing
- black/blue/whitelists: controls input and output to the index
this class is also the core of the http crawling.
There are some items that need to be respected when crawling the web:
1) respect robots.txt
2) do not access one domain too frequently, wait between accesses
3) remember crawled URL's and do not access again too early
4) priorization of specific links should be possible (hot-lists)
5) attributes for crawling (depth, filters, hot/black-lists, priority)
6) different crawling jobs with different attributes ('Orders') simultanoulsy
We implement some specific tasks and use different database to archieve these goals:
- a database 'crawlerDisallow.db' contains all url's that shall not be crawled
- a database 'crawlerDomain.db' holds all domains and access times, where we loaded the disallow tables
this table contains the following entities:
<flag: robotes exist/not exist, last access of robots.txt, last access of domain (for access scheduling)>
- four databases for scheduled access: crawlerScheduledHotText.db, crawlerScheduledColdText.db,
crawlerScheduledHotMedia.db and crawlerScheduledColdMedia.db
- two stacks for new URLS: newText.stack and newMedia.stack
- two databases for URL double-check: knownText.db and knownMedia.db
- one database with crawling orders: crawlerOrders.db
The Information flow of a single URL that is crawled is as follows:
- a html file is loaded from a specific URL within the module httpdProxyServlet as
a process of the proxy.
- the file is passed to httpdProxyCache. Here it's processing is delayed until the proxy is idle.
- The cache entry is passed on to the plasmaSwitchboard. There the URL is stored into plasmaLURL where
the URL is stored under a specific hash. The URL's from the content are stripped off, stored in plasmaLURL
with a 'wrong' date (the date of the URL's are not known at this time, only after fetching) and stacked with
plasmaCrawlerTextStack. The content is read and splitted into rated words in plasmaCondenser.
The splitted words are then integrated into the index with plasmaSearch.
- In plasmaSearch the words are indexed by reversing the relation between URL and words: one URL points
to many words, the words within the document at the URL. After reversing, one word points
to many URL's, all the URL's where the word occurrs. One single word->URL-hash relation is stored in
plasmaIndexEntry. A set of plasmaIndexEntries is a reverse word index.
This reverse word index is stored temporarly in plasmaIndexCache.
- In plasmaIndexCache the single plasmaIndexEntry'ies are collected and stored into a plasmaIndex - entry
These plasmaIndex - Objects are the true reverse words indexes.
- in plasmaIndex the plasmaIndexEntry - objects are stored in a kelondroTree; an indexed file in the file system.
The information flow of a search request is as follows:
- in httpdFileServlet the user enters a search query, which is passed to plasmaSwitchboard
- in plasmaSwitchboard, the query is passed to plasmaSearch.
- in plasmaSearch, the plasmaSearch.result object is generated by simultanous enumeration of
URL hases in the reverse word indexes plasmaIndex
- (future: the plasmaSearch.result - object is used to identify more key words for a new search)
*/
package de.anomic.plasma;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.IOException;
import java.net.InetAddress;
import java.net.URL;
import java.net.URLEncoder;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.Hashtable;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import java.util.TreeSet;
import java.util.logging.Level;
import de.anomic.data.blogBoard;
import de.anomic.data.bookmarksDB;
import de.anomic.data.messageBoard;
import de.anomic.data.wikiBoard;
import de.anomic.data.userDB;
import de.anomic.htmlFilter.htmlFilterContentScraper;
import de.anomic.http.httpHeader;
import de.anomic.http.httpRemoteProxyConfig;
import de.anomic.http.httpc;
import de.anomic.kelondro.kelondroBase64Order;
import de.anomic.kelondro.kelondroException;
import de.anomic.kelondro.kelondroMSetTools;
import de.anomic.kelondro.kelondroNaturalOrder;
import de.anomic.kelondro.kelondroTables;
import de.anomic.plasma.dbImport.dbImportManager;
import de.anomic.server.serverAbstractSwitch;
import de.anomic.server.serverCodings;
import de.anomic.server.serverDate;
import de.anomic.server.serverInstantThread;
import de.anomic.server.serverObjects;
import de.anomic.server.serverSemaphore;
import de.anomic.server.serverSwitch;
import de.anomic.server.serverFileUtils;
import de.anomic.server.logging.serverLog;
import de.anomic.tools.bitfield;
import de.anomic.tools.crypt;
import de.anomic.tools.nxTools;
import de.anomic.yacy.yacyClient;
import de.anomic.yacy.yacyCore;
import de.anomic.yacy.yacySeed;
import de.anomic.yacy.yacyNewsPool;
public final class plasmaSwitchboard extends serverAbstractSwitch implements serverSwitch {
// load slots
public static int crawlSlots = 10;
public static int indexingSlots = 100;
public static int stackCrawlSlots = 10000;
public static int maxCRLDump = 500000;
public static int maxCRGDump = 200000;
private int dhtTransferIndexCount = 50;
private static final int dhtTransferIndexMinimum = 30;
// couloured list management
public static TreeSet badwords = null;
public static TreeSet blueList = null;
public static TreeSet stopwords = null;
public static plasmaURLPattern urlBlacklist;
// storage management
public File htCachePath;
private File plasmaPath;
public File listsPath;
public File htDocsPath;
public File rankingPath;
public File workPath;
public HashMap rankingPermissions;
public plasmaURLPool urlPool;
public plasmaWordIndex wordIndex;
public plasmaHTCache cacheManager;
public plasmaSnippetCache snippetCache;
public plasmaCrawlLoader cacheLoader;
public plasmaSwitchboardQueue sbQueue;
public plasmaCrawlStacker sbStackCrawlThread;
public messageBoard messageDB;
public wikiBoard wikiDB;
public blogBoard blogDB;
public static plasmaCrawlRobotsTxt robots;
public plasmaCrawlProfile profiles;
public plasmaCrawlProfile.entry defaultProxyProfile;
public plasmaCrawlProfile.entry defaultRemoteProfile;
public boolean rankingOn;
public plasmaRankingDistribution rankingOwnDistribution;
public plasmaRankingDistribution rankingOtherDistribution;
public HashMap outgoingCookies, incomingCookies;
public kelondroTables facilityDB;
public plasmaParser parser;
public long proxyLastAccess;
public yacyCore yc;
public HashMap indexingTasksInProcess;
public userDB userDB;
public bookmarksDB bookmarksDB;
//public StringBuffer crl; // local citation references
public StringBuffer crg; // global citation references
public dbImportManager dbImportManager;
public plasmaDHTFlush transferIdxThread = null;
private plasmaDHTChunk dhtTransferChunk = null;
/*
* Remote Proxy configuration
*/
// public boolean remoteProxyUse;
// public boolean remoteProxyUse4Yacy;
// public String remoteProxyHost;
// public int remoteProxyPort;
// public String remoteProxyNoProxy = "";
// public String[] remoteProxyNoProxyPatterns = null;
public httpRemoteProxyConfig remoteProxyConfig = null;
/*
* Some constants
*/
private static final String STR_PROXYPROFILE = "defaultProxyProfile";
private static final String STR_REMOTEPROFILE = "defaultRemoteProfile";
private static final String STR_REMOTECRAWLTRIGGER = "REMOTECRAWLTRIGGER: REMOTE CRAWL TO PEER ";
private serverSemaphore shutdownSync = new serverSemaphore(0);
private boolean terminate = false;
//private Object crawlingPausedSync = new Object();
//private boolean crawlingIsPaused = false;
public static final String CRAWLJOB_LOCAL_CRAWL = "50_localcrawl";
public static final String CRAWLJOB_REMOTE_TRIGGERED_CRAWL = "62_remotetriggeredcrawl";
public static final String CRAWLJOB_GLOBAL_CRAWL_TRIGGER = "61_globalcrawltrigger";
private static final int CRAWLJOB_SYNC = 0;
private static final int CRAWLJOB_STATUS = 1;
private Hashtable crawlJobsStatus = new Hashtable();
private static plasmaSwitchboard sb;
public plasmaSwitchboard(String rootPath, String initPath, String configPath) {
super(rootPath, initPath, configPath);
// set loglevel and log
setLog(new serverLog("PLASMA"));
// load values from configs
this.plasmaPath = new File(rootPath, getConfig("dbPath", "DATA/PLASMADB"));
this.log.logConfig("Plasma DB Path: " + this.plasmaPath.toString());
this.listsPath = new File(rootPath, getConfig("listsPath", "DATA/LISTS"));
this.log.logConfig("Lists Path: " + this.listsPath.toString());
this.htDocsPath = new File(rootPath, getConfig("htDocsPath", "DATA/HTDOCS"));
this.log.logConfig("HTDOCS Path: " + this.htDocsPath.toString());
this.rankingPath = new File(rootPath, getConfig("rankingPath", "DATA/RANKING"));
this.log.logConfig("Ranking Path: " + this.rankingPath.toString());
this.rankingPermissions = new HashMap(); // mapping of permission - to filename.
this.workPath = new File(rootPath, getConfig("workPath", "DATA/WORK"));
this.log.logConfig("Work Path: " + this.workPath.toString());
/* ============================================================================
* Remote Proxy configuration
* ============================================================================ */
this.remoteProxyConfig = httpRemoteProxyConfig.init(this);
this.log.logConfig("Remote proxy configuration:\n" + this.remoteProxyConfig.toString());
// setting timestamp of last proxy access
this.proxyLastAccess = System.currentTimeMillis() - 60000;
crg = new StringBuffer(maxCRGDump);
//crl = new StringBuffer(maxCRLDump);
// configuring list path
if (!(listsPath.exists())) listsPath.mkdirs();
// load coloured lists
if (blueList == null) {
// read only once upon first instantiation of this class
String f = getConfig("plasmaBlueList", null);
File plasmaBlueListFile = new File(f);
if (f != null) blueList = kelondroMSetTools.loadList(plasmaBlueListFile, kelondroNaturalOrder.naturalOrder); else blueList= new TreeSet();
this.log.logConfig("loaded blue-list from file " + plasmaBlueListFile.getName() + ", " +
blueList.size() + " entries, " +
ppRamString(plasmaBlueListFile.length()/1024));
}
// load the black-list / inspired by [AS]
File ulrBlackListFile = new File(getRootPath(), getConfig("listsPath", "DATA/LISTS"));
urlBlacklist = new plasmaURLPattern(ulrBlackListFile);
String f = getConfig("proxyBlackListsActive", null);
if (f != null) {
urlBlacklist.loadList(f, "/");
this.log.logConfig("loaded black-list from file " + ulrBlackListFile.getName() + ", " +
urlBlacklist.size() + " entries, " +
ppRamString(ulrBlackListFile.length()/1024));
}
// load badwords (to filter the topwords)
if (badwords == null) {
File badwordsFile = new File(rootPath, "yacy.badwords");
badwords = kelondroMSetTools.loadList(badwordsFile, kelondroNaturalOrder.naturalOrder);
this.log.logConfig("loaded badwords from file " + badwordsFile.getName() +
", " + badwords.size() + " entries, " +
ppRamString(badwordsFile.length()/1024));
}
// load stopwords
if (stopwords == null) {
File stopwordsFile = new File(rootPath, "yacy.stopwords");
stopwords = kelondroMSetTools.loadList(stopwordsFile, kelondroNaturalOrder.naturalOrder);
this.log.logConfig("loaded stopwords from file " + stopwordsFile.getName() + ", " +
stopwords.size() + " entries, " +
ppRamString(stopwordsFile.length()/1024));
}
// load ranking tables
File YBRPath = new File(rootPath, "ranking/YBR");
if (YBRPath.exists()) {
plasmaSearchPreOrder.loadYBR(YBRPath, 15);
}
// read memory amount
int ramLURL = (int) getConfigLong("ramCacheLURL", 1024) / 1024;
int ramNURL = (int) getConfigLong("ramCacheNURL", 1024) / 1024;
int ramEURL = (int) getConfigLong("ramCacheEURL", 1024) / 1024;
int ramRWI = (int) getConfigLong("ramCacheRWI", 1024) / 1024;
int ramHTTP = (int) getConfigLong("ramCacheHTTP", 1024) / 1024;
int ramMessage = (int) getConfigLong("ramCacheMessage", 1024) / 1024;
int ramRobots = (int) getConfigLong("ramCacheRobots",1024) / 1024;
int ramProfiles= (int) getConfigLong("ramCacheProfiles",1024) / 1024;
int ramPreNURL = (int) getConfigLong("ramCachePreNURL", 1024) / 1024;
int ramWiki = (int) getConfigLong("ramCacheWiki", 1024) / 1024;
int ramBlog = (int) getConfigLong("ramCacheBlog", 1024) / 1024;
this.log.logConfig("LURL Cache memory = " + ppRamString(ramLURL));
this.log.logConfig("NURL Cache memory = " + ppRamString(ramNURL));
this.log.logConfig("EURL Cache memory = " + ppRamString(ramEURL));
this.log.logConfig("RWI Cache memory = " + ppRamString(ramRWI));
this.log.logConfig("HTTP Cache memory = " + ppRamString(ramHTTP));
this.log.logConfig("Message Cache memory = " + ppRamString(ramMessage));
this.log.logConfig("Wiki Cache memory = " + ppRamString(ramWiki));
this.log.logConfig("Blog Cache memory = " + ppRamString(ramBlog));
this.log.logConfig("Robots Cache memory = " + ppRamString(ramRobots));
this.log.logConfig("Profiles Cache memory = " + ppRamString(ramProfiles));
this.log.logConfig("PreNURL Cache memory = " + ppRamString(ramPreNURL));
// make crawl profiles database and default profiles
this.log.logConfig("Initializing Crawl Profiles");
File profilesFile = new File(this.plasmaPath, "crawlProfiles0.db");
this.profiles = new plasmaCrawlProfile(profilesFile, ramProfiles);
initProfiles();
log.logConfig("Loaded profiles from file " + profilesFile.getName() +
", " + this.profiles.size() + " entries" +
", " + ppRamString(profilesFile.length()/1024));
// loading the robots.txt db
this.log.logConfig("Initializing robots.txt DB");
File robotsDBFile = new File(this.plasmaPath, "crawlRobotsTxt.db");
robots = new plasmaCrawlRobotsTxt(robotsDBFile, ramRobots);
this.log.logConfig("Loaded robots.txt DB from file " + robotsDBFile.getName() +
", " + robots.size() + " entries" +
", " + ppRamString(robotsDBFile.length()/1024));
// start indexing management
log.logConfig("Starting Indexing Management");
urlPool = new plasmaURLPool(plasmaPath, ramLURL, ramNURL, ramEURL);
wordIndex = new plasmaWordIndex(plasmaPath, ramRWI, log);
int wordCacheMaxCount = (int) getConfigLong("wordCacheMaxCount", 10000);
wordIndex.setMaxWordCount(wordCacheMaxCount);
// start a cache manager
log.logConfig("Starting HT Cache Manager");
// create the cache directory
String cache = getConfig("proxyCache", "DATA/HTCACHE");
cache = cache.replace('\\', '/');
if (cache.endsWith("/")) { cache = cache.substring(0, cache.length() - 1); }
if (new File(cache).isAbsolute()) {
htCachePath = new File(cache); // don't use rootPath
} else {
htCachePath = new File(rootPath, cache);
}
this.log.logInfo("HTCACHE Path = " + htCachePath.getAbsolutePath());
long maxCacheSize = 1024 * 1024 * Long.parseLong(getConfig("proxyCacheSize", "2")); // this is megabyte
this.cacheManager = new plasmaHTCache(htCachePath, maxCacheSize, ramHTTP);
// make parser
log.logConfig("Starting Parser");
this.parser = new plasmaParser();
/* ======================================================================
* initialize switchboard queue
* ====================================================================== */
// create queue
this.sbQueue = new plasmaSwitchboardQueue(this.cacheManager, this.urlPool.loadedURL, new File(this.plasmaPath, "switchboardQueue1.stack"), this.profiles);
// setting the indexing queue slots
indexingSlots = (int) getConfigLong("indexer.slots", 100);
// create in process list
this.indexingTasksInProcess = new HashMap();
// going through the sbQueue Entries and registering all content files as in use
int count = 0;
try {
ArrayList sbQueueEntries = this.sbQueue.list();
for (int i = 0; i < sbQueueEntries.size(); i++) {
plasmaSwitchboardQueue.Entry entry = (plasmaSwitchboardQueue.Entry) sbQueueEntries.get(i);
if ((entry != null) && (entry.url() != null) && (entry.cacheFile().exists())) {
plasmaHTCache.filesInUse.add(entry.cacheFile());
count++;
}
}
this.log.logConfig(count + " files in htcache reported to the cachemanager as in use.");
} catch (IOException e) {
this.log.logSevere("cannot find any files in htcache reported to the cachemanager: " + e.getMessage());
}
// define an extension-blacklist
log.logConfig("Parser: Initializing Extension Mappings for Media/Parser");
plasmaParser.initMediaExt(plasmaParser.extString2extList(getConfig("mediaExt","")));
plasmaParser.initSupportedRealtimeFileExt(plasmaParser.extString2extList(getConfig("parseableExt","")));
// define a realtime parsable mimetype list
log.logConfig("Parser: Initializing Mime Types");
plasmaParser.initRealtimeParsableMimeTypes(getConfig("parseableRealtimeMimeTypes","application/xhtml+xml,text/html,text/plain"));
plasmaParser.initParseableMimeTypes(plasmaParser.PARSER_MODE_PROXY,getConfig("parseableMimeTypes.PROXY",null));
plasmaParser.initParseableMimeTypes(plasmaParser.PARSER_MODE_CRAWLER,getConfig("parseableMimeTypes.CRAWLER",null));
plasmaParser.initParseableMimeTypes(plasmaParser.PARSER_MODE_ICAP,getConfig("parseableMimeTypes.ICAP",null));
plasmaParser.initParseableMimeTypes(plasmaParser.PARSER_MODE_URLREDIRECTOR,getConfig("parseableMimeTypes.URLREDIRECTOR",null));
// start a loader
log.logConfig("Starting Crawl Loader");
crawlSlots = Integer.parseInt(getConfig("crawler.MaxActiveThreads", "10"));
plasmaCrawlLoader.switchboard = this;
this.cacheLoader = new plasmaCrawlLoader(this.cacheManager, this.log);
/*
* Creating sync objects and loading status for the crawl jobs
* a) local crawl
* b) remote triggered crawl
* c) global crawl trigger
*/
this.crawlJobsStatus.put(CRAWLJOB_LOCAL_CRAWL, new Object[]{
new Object(),
Boolean.valueOf(getConfig(CRAWLJOB_LOCAL_CRAWL + "_isPaused", "false"))});
this.crawlJobsStatus.put(CRAWLJOB_REMOTE_TRIGGERED_CRAWL, new Object[]{
new Object(),
Boolean.valueOf(getConfig(CRAWLJOB_REMOTE_TRIGGERED_CRAWL + "_isPaused", "false"))});
this.crawlJobsStatus.put(CRAWLJOB_GLOBAL_CRAWL_TRIGGER, new Object[]{
new Object(),
Boolean.valueOf(getConfig(CRAWLJOB_GLOBAL_CRAWL_TRIGGER + "_isPaused", "false"))});
// starting board
initMessages(ramMessage);
// starting wiki
initWiki(ramWiki);
//starting blog
initBlog(ramBlog);
// Init User DB
this.log.logConfig("Loading User DB");
File userDbFile = new File(getRootPath(), "DATA/SETTINGS/user.db");
this.userDB = new userDB(userDbFile, 512);
this.log.logConfig("Loaded User DB from file " + userDbFile.getName() +
", " + this.userDB.size() + " entries" +
", " + ppRamString(userDbFile.length()/1024));
//Init bookmarks DB
initBookmarks();
// init cookie-Monitor
this.log.logConfig("Starting Cookie Monitor");
this.outgoingCookies = new HashMap();
this.incomingCookies = new HashMap();
// clean up profiles
this.log.logConfig("Cleaning Profiles");
cleanProfiles();
// init ranking transmission
/*
CRDistOn = true/false
CRDist0Path = GLOBAL/010_owncr
CRDist0Method = 1
CRDist0Percent = 0
CRDist0Target =
CRDist1Path = GLOBAL/014_othercr/1
CRDist1Method = 9
CRDist1Percent = 30
CRDist1Target = kaskelix.de:8080,yacy.dyndns.org:8000,suma-lab.de:8080
**/
rankingOn = getConfig("CRDistOn", "true").equals("true");
rankingOwnDistribution = new plasmaRankingDistribution(log, new File(rankingPath, getConfig("CRDist0Path", plasmaRankingDistribution.CR_OWN)), (int) getConfigLong("CRDist0Method", plasmaRankingDistribution.METHOD_ANYSENIOR), (int) getConfigLong("CRDist0Percent", 0), getConfig("CRDist0Target", ""));
rankingOtherDistribution = new plasmaRankingDistribution(log, new File(rankingPath, getConfig("CRDist1Path", plasmaRankingDistribution.CR_OTHER)), (int) getConfigLong("CRDist1Method", plasmaRankingDistribution.METHOD_MIXEDSENIOR), (int) getConfigLong("CRDist1Percent", 30), getConfig("CRDist1Target", "kaskelix.de:8080,yacy.dyndns.org:8000,suma-lab.de:8080"));
// init facility DB
/*
log.logSystem("Starting Facility Database");
File facilityDBpath = new File(getRootPath(), "DATA/SETTINGS/");
facilityDB = new kelondroTables(facilityDBpath);
facilityDB.declareMaps("backlinks", 250, 500, new String[] {"date"}, null);
log.logSystem("..opened backlinks");
facilityDB.declareMaps("zeitgeist", 40, 500);
log.logSystem("..opened zeitgeist");
facilityDB.declareTree("statistik", new int[]{11, 8, 8, 8, 8, 8, 8}, 0x400);
log.logSystem("..opened statistik");
facilityDB.update("statistik", (new serverDate()).toShortString(false).substring(0, 11), new long[]{1,2,3,4,5,6});
long[] testresult = facilityDB.selectLong("statistik", "yyyyMMddHHm");
testresult = facilityDB.selectLong("statistik", (new serverDate()).toShortString(false).substring(0, 11));
*/
/*
* Initializing httpc
*/
// initializing yacyDebugMode
httpc.yacyDebugMode = getConfig("yacyDebugMode", "false").equals("true");
// init nameCacheNoCachingList
String noCachingList = getConfig("httpc.nameCacheNoCachingPatterns","");
String[] noCachingEntries = noCachingList.split(",");
for (int i=0; i<noCachingEntries.length; i++) {
String entry = noCachingEntries[i].trim();
httpc.nameCacheNoCachingPatterns.add(entry);
}
// generate snippets cache
log.logConfig("Initializing Snippet Cache");
snippetCache = new plasmaSnippetCache(this,cacheManager, parser,log);
// start yacy core
log.logConfig("Starting YaCy Protocol Core");
//try{Thread.currentThread().sleep(5000);} catch (InterruptedException e) {} // for profiler
this.yc = new yacyCore(this);
//log.logSystem("Started YaCy Protocol Core");
// System.gc(); try{Thread.currentThread().sleep(5000);} catch (InterruptedException e) {} // for profiler
serverInstantThread.oneTimeJob(yc, "loadSeeds", yacyCore.log, 3000);
// initializing the stackCrawlThread
this.sbStackCrawlThread = new plasmaCrawlStacker(this,this.plasmaPath,ramPreNURL);
//this.sbStackCrawlThread = new plasmaStackCrawlThread(this,this.plasmaPath,ramPreNURL);
//this.sbStackCrawlThread.start();
// initializing dht chunk generation
this.dhtTransferChunk = null;
// deploy threads
log.logConfig("Starting Threads");
// System.gc(); // help for profiler
int indexing_cluster = Integer.parseInt(getConfig("80_indexing_cluster", "1"));
if (indexing_cluster < 1) indexing_cluster = 1;
deployThread("90_cleanup", "Cleanup", "simple cleaning process for monitoring information", null,
new serverInstantThread(this, "cleanupJob", "cleanupJobSize"), 10000); // all 5 Minutes
deployThread("82_crawlstack", "Crawl URL Stacker", "process that checks url for double-occurrences and for allowance/disallowance by robots.txt", null,
new serverInstantThread(sbStackCrawlThread, "job", "size"), 8000);
deployThread("80_indexing", "Parsing/Indexing", "thread that performes document parsing and indexing", "/IndexCreateIndexingQueue_p.html",
new serverInstantThread(this, "deQueue", "queueSize"), 10000);
for (int i = 1; i < indexing_cluster; i++) {
setConfig((i + 80) + "_indexing_idlesleep", getConfig("80_indexing_idlesleep", ""));
setConfig((i + 80) + "_indexing_busysleep", getConfig("80_indexing_busysleep", ""));
deployThread((i + 80) + "_indexing", "Parsing/Indexing (cluster job)", "thread that performes document parsing and indexing", null,
new serverInstantThread(this, "deQueue", "queueSize"), 10000 + (i * 1000),
Long.parseLong(getConfig("80_indexing_idlesleep" , "5000")),
Long.parseLong(getConfig("80_indexing_busysleep" , "0")),
Long.parseLong(getConfig("80_indexing_memprereq" , "1000000")));
}
deployThread("70_cachemanager", "Proxy Cache Enqueue", "job takes new proxy files from RAM stack, stores them, and hands over to the Indexing Stack", null,
new serverInstantThread(this, "htEntryStoreJob", "htEntrySize"), 10000);
deployThread("62_remotetriggeredcrawl", "Remote Crawl Job", "thread that performes a single crawl/indexing step triggered by a remote peer", null,
new serverInstantThread(this, "remoteTriggeredCrawlJob", "remoteTriggeredCrawlJobSize"), 30000);
deployThread("61_globalcrawltrigger", "Global Crawl Trigger", "thread that triggeres remote peers for crawling", "/IndexCreateWWWGlobalQueue_p.html",
new serverInstantThread(this, "limitCrawlTriggerJob", "limitCrawlTriggerJobSize"), 30000); // error here?
deployThread("50_localcrawl", "Local Crawl", "thread that performes a single crawl step from the local crawl queue", "/IndexCreateWWWLocalQueue_p.html",
new serverInstantThread(this, "coreCrawlJob", "coreCrawlJobSize"), 10000);
deployThread("40_peerseedcycle", "Seed-List Upload", "task that a principal peer performes to generate and upload a seed-list to a ftp account", null,
new serverInstantThread(yc, "publishSeedList", null), 180000);
serverInstantThread peerPing = null;
deployThread("30_peerping", "YaCy Core", "this is the p2p-control and peer-ping task", null,
peerPing = new serverInstantThread(yc, "peerPing", null), 2000);
peerPing.setSyncObject(new Object());
deployThread("20_dhtdistribution", "DHT Distribution", "selection, transfer and deletion of index entries that are not searched on your peer, but on others", null,
new serverInstantThread(this, "dhtTransferJob", null), 60000,
Long.parseLong(getConfig("20_dhtdistribution_idlesleep" , "5000")),
Long.parseLong(getConfig("20_dhtdistribution_busysleep" , "0")),
Long.parseLong(getConfig("20_dhtdistribution_memprereq" , "1000000")));
// test routine for snippet fetch
//Set query = new HashSet();
//query.add(plasmaWordIndexEntry.word2hash("Weitergabe"));
//query.add(plasmaWordIndexEntry.word2hash("Zahl"));
//plasmaSnippetCache.result scr = snippetCache.retrieve(new URL("http://www.heise.de/mobil/newsticker/meldung/mail/54980"), query, true);
//plasmaSnippetCache.result scr = snippetCache.retrieve(new URL("http://www.heise.de/security/news/foren/go.shtml?read=1&msg_id=7301419&forum_id=72721"), query, true);
//plasmaSnippetCache.result scr = snippetCache.retrieve(new URL("http://www.heise.de/kiosk/archiv/ct/2003/4/20"), query, true, 260);
this.dbImportManager = new dbImportManager(this);
sb=this;
log.logConfig("Finished Switchboard Initialization");
}
public void initMessages(int ramMessage) {
this.log.logConfig("Starting Message Board");
File messageDbFile = new File(workPath, "message.db");
this.messageDB = new messageBoard(messageDbFile, ramMessage);
this.log.logConfig("Loaded Message Board DB from file " + messageDbFile.getName() +
", " + this.messageDB.size() + " entries" +
", " + ppRamString(messageDbFile.length()/1024));
}
public void initWiki(int ramWiki) {
this.log.logConfig("Starting Wiki Board");
File wikiDbFile = new File(workPath, "wiki.db");
this.wikiDB = new wikiBoard(wikiDbFile,
new File(workPath, "wiki-bkp.db"), ramWiki);
this.log.logConfig("Loaded Wiki Board DB from file " + wikiDbFile.getName() +
", " + this.wikiDB.size() + " entries" +
", " + ppRamString(wikiDbFile.length()/1024));
}
public void initBlog(int ramBlog) {
this.log.logConfig("Starting Blog");
File blogDbFile = new File(workPath, "blog.db");
this.blogDB = new blogBoard(blogDbFile, ramBlog);
this.log.logConfig("Loaded Blog DB from file " + blogDbFile.getName() +
", " + this.blogDB.size() + " entries" +
", " + ppRamString(blogDbFile.length()/1024));
}
public void initBookmarks(){
this.log.logConfig("Loading Bookmarks DB");
File bookmarksFile = new File(workPath, "bookmarks.db");
File tagsFile = new File(workPath, "bookmarkTags.db");
File datesFile = new File(workPath, "bookmarkDates.db");
this.bookmarksDB = new bookmarksDB(bookmarksFile, tagsFile, datesFile, 512);
this.log.logConfig("Loaded Bookmarks DB from files "+ bookmarksFile.getName()+ ", "+tagsFile.getName());
this.log.logConfig(this.bookmarksDB.tagsSize()+" Tag, "+this.bookmarksDB.bookmarksSize()+" Bookmarks");
}
public static plasmaSwitchboard getSwitchboard(){
return sb;
}
public boolean isRobinsonMode() {
return (yacyCore.seedDB.sizeConnected() == 0) && (yacyCore.seedDB.mySeed.isVirgin());
}
/**
* This method changes the HTCache size.<br>
* @param new cache size in mb
*/
public final void setCacheSize(long newCacheSize) {
this.cacheManager.setCacheSize(1048576 * newCacheSize);
}
public boolean onlineCaution() {
try {
return System.currentTimeMillis() - proxyLastAccess < Integer.parseInt(getConfig("onlineCautionDelay", "30000"));
} catch (NumberFormatException e) {
return false;
}
}
private static String ppRamString(long bytes) {
if (bytes < 1024) return bytes + " KByte";
bytes = bytes / 1024;
if (bytes < 1024) return bytes + " MByte";
bytes = bytes / 1024;
if (bytes < 1024) return bytes + " GByte";
return (bytes / 1024) + "TByte";
}
private void initProfiles() {
if ((this.profiles.size() == 0) ||
(getConfig(STR_PROXYPROFILE, "").length() == 0) ||
(this.profiles.getEntry(getConfig(STR_PROXYPROFILE, "")) == null)) {
// generate new default entry for proxy crawling
this.defaultProxyProfile = this.profiles.newEntry("proxy", "", ".*", ".*", Integer.parseInt(getConfig("proxyPrefetchDepth", "0")), Integer.parseInt(getConfig("proxyPrefetchDepth", "0")), 60 * 24 * 30, -1, -1, false, true, true, true, getConfigBool("proxyCrawlOrder", false), true, true, true);
setConfig(STR_PROXYPROFILE, this.defaultProxyProfile.handle());
} else {
this.defaultProxyProfile = this.profiles.getEntry(getConfig(STR_PROXYPROFILE, ""));
}
if ((profiles.size() == 1) ||
(getConfig(STR_REMOTEPROFILE, "").length() == 0) ||
(profiles.getEntry(getConfig(STR_REMOTEPROFILE, "")) == null)) {
// generate new default entry for remote crawling
defaultRemoteProfile = profiles.newEntry("remote", "", ".*", ".*", 0, 0, 60 * 24 * 30, -1, -1, true, false, true, true, false, true, true, false);
setConfig(STR_REMOTEPROFILE, defaultRemoteProfile.handle());
} else {
defaultRemoteProfile = profiles.getEntry(getConfig(STR_REMOTEPROFILE, ""));
}
}
private void resetProfiles() {
final File pdb = new File(plasmaPath, "crawlProfiles0.db");
if (pdb.exists()) pdb.delete();
int ramProfiles = (int) getConfigLong("ramCacheProfiles", 1024) / 1024;
profiles = new plasmaCrawlProfile(pdb, ramProfiles);
initProfiles();
}
public boolean cleanProfiles() {
if ((sbQueue.size() > 0) || (cacheLoader.size() > 0) || (urlPool.noticeURL.stackSize() > 0)) return false;
final Iterator iter = profiles.profiles(true);
plasmaCrawlProfile.entry entry;
boolean hasDoneSomething = false;
try {
while (iter.hasNext()) {
entry = (plasmaCrawlProfile.entry) iter.next();
if (!((entry.name().equals("proxy")) || (entry.name().equals("remote")))) {
iter.remove();
hasDoneSomething = true;
}
}
} catch (kelondroException e) {
resetProfiles();
hasDoneSomething = true;
}
return hasDoneSomething;
}
public plasmaHTCache getCacheManager() {
return cacheManager;
}
synchronized public void htEntryStoreEnqueued(plasmaHTCache.Entry entry) throws IOException {
if (cacheManager.full())
htEntryStoreProcess(entry);
else
cacheManager.push(entry);
}
synchronized public boolean htEntryStoreProcess(plasmaHTCache.Entry entry) throws IOException {
if (entry == null) return false;
/* =========================================================================
* PARSER SUPPORT
*
* Testing if the content type is supported by the available parsers
* ========================================================================= */
boolean isSupportedContent = (entry.responseHeader != null) &&
plasmaParser.supportedContent(entry.url,entry.responseHeader.mime());
/* =========================================================================
* INDEX CONTROL HEADER
*
* With the X-YACY-Index-Control header set to "no-index" a client could disallow
* yacy to index the response returned as answer to a request
* ========================================================================= */
boolean doIndexing = true;
if (entry.requestHeader != null) {
if (
(entry.requestHeader.containsKey(httpHeader.X_YACY_INDEX_CONTROL)) &&
(((String) entry.requestHeader.get(httpHeader.X_YACY_INDEX_CONTROL)).toUpperCase().equals("NO-INDEX"))
) {
doIndexing = false;
}
}
/* =========================================================================
* LOCAL IP ADDRESS CHECK
*
* check if ip is local ip address
* ========================================================================= */
InetAddress hostAddress = httpc.dnsResolve(entry.url.getHost());
if (hostAddress == null) {
this.log.logFine("Unknown host in URL '" + entry.url + "'. Will not be indexed.");
doIndexing = false;
} else if (hostAddress.isSiteLocalAddress()) {
this.log.logFine("Host in URL '" + entry.url + "' has private ip address. Will not be indexed.");
doIndexing = false;
} else if (hostAddress.isLoopbackAddress()) {
this.log.logFine("Host in URL '" + entry.url + "' has loopback ip address. Will not be indexed.");
doIndexing = false;
}
/* =========================================================================
* STORING DATA
*
* Now we store the response header and response content if
* a) the user has configured to use the htcache or
* b) the content should be indexed
* ========================================================================= */
if (
(entry.profile.storeHTCache()) ||
(doIndexing && isSupportedContent)
) {
// store response header
if (entry.responseHeader != null) {
this.cacheManager.storeHeader(entry.nomalizedURLHash, entry.responseHeader);
this.log.logInfo("WROTE HEADER for " + entry.cacheFile);
}
// work off unwritten files
if (entry.cacheArray == null) {
this.log.logFine("EXISTING FILE (" + entry.cacheFile.length() + " bytes) for " + entry.cacheFile);
} else {
String error = entry.shallStoreCacheForProxy();
if (error == null) {
this.cacheManager.writeFile(entry.url, entry.cacheArray);
this.log.logFine("WROTE FILE (" + entry.cacheArray.length + " bytes) for " + entry.cacheFile);
} else {
this.log.logFine("WRITE OF FILE " + entry.cacheFile + " FORBIDDEN: " + error);
}
}
}
/* =========================================================================
* INDEXING
* ========================================================================= */
if (doIndexing && isSupportedContent){
// registering the cachefile as in use
if (entry.cacheFile.exists()) {
plasmaHTCache.filesInUse.add(entry.cacheFile);
}
// enqueue for further crawling
enQueue(this.sbQueue.newEntry(entry.url, plasmaURL.urlHash(entry.referrerURL()),
entry.requestHeader.ifModifiedSince(), entry.requestHeader.containsKey(httpHeader.COOKIE),
entry.initiator(), entry.depth, entry.profile.handle(),
entry.name()
));
} else {
if (!entry.profile.storeHTCache() && entry.cacheFile.exists()) {
this.cacheManager.deleteFile(entry.url);
}
}
return true;
}
public boolean htEntryStoreJob() {
if (cacheManager.empty()) return false;
try {
return htEntryStoreProcess(cacheManager.pop());
} catch (IOException e) {
return false;
}
}
public int htEntrySize() {
return cacheManager.size();
}
public void close() {
log.logConfig("SWITCHBOARD SHUTDOWN STEP 1: sending termination signal to managed threads:");
terminateAllThreads(true);
if (transferIdxThread != null) stopTransferWholeIndex(false);
log.logConfig("SWITCHBOARD SHUTDOWN STEP 2: sending termination signal to threaded indexing");
// closing all still running db importer jobs
this.dbImportManager.close();
cacheLoader.close();
wikiDB.close();
blogDB.close();
userDB.close();
bookmarksDB.close();
messageDB.close();
if (facilityDB != null) try {facilityDB.close();} catch (IOException e) {}
sbStackCrawlThread.close();
profiles.close();
robots.close();
parser.close();
cacheManager.close();
sbQueue.close();
flushCitationReference(crg, "crg");
log.logConfig("SWITCHBOARD SHUTDOWN STEP 3: sending termination signal to database manager (stand by...)");
int waitingBoundSeconds = Integer.parseInt(getConfig("maxWaitingWordFlush", "120"));
urlPool.close();
wordIndex.close(waitingBoundSeconds);
log.logConfig("SWITCHBOARD SHUTDOWN TERMINATED");
}
public int queueSize() {
return sbQueue.size();
//return processStack.size() + cacheLoader.size() + noticeURL.stackSize();
}
public int cacheSizeMin() {
return wordIndex.size();
}
public void enQueue(Object job) {
if (!(job instanceof plasmaSwitchboardQueue.Entry)) {
System.out.println("internal error at plasmaSwitchboard.enQueue: wrong job type");
System.exit(0);
}
try {
sbQueue.push((plasmaSwitchboardQueue.Entry) job);
} catch (IOException e) {
log.logSevere("IOError in plasmaSwitchboard.enQueue: " + e.getMessage(), e);
}
}
public boolean deQueue() {
// work off fresh entries from the proxy or from the crawler
if (onlineCaution()) {
log.logFiner("deQueue: online caution, omitting resource stack processing");
return false;
}
// flush some entries from the RAM cache
// (new permanent cache flushing)
wordIndex.flushCacheSome();
boolean doneSomething = false;
// possibly delete entries from last chunk
if ((this.dhtTransferChunk != null) &&
(this.dhtTransferChunk.getStatus() == plasmaDHTChunk.chunkStatus_COMPLETE)) {
int deletedURLs = this.dhtTransferChunk.deleteTransferIndexes();
this.log.logFine("Deleted from " + this.dhtTransferChunk.containers().length + " transferred RWIs locally, removed " + deletedURLs + " URL references");
this.dhtTransferChunk = null;
}
// generate a dht chunk
if ((dhtShallTransfer() == null) &&
((this.dhtTransferChunk == null) ||
(this.dhtTransferChunk.getStatus() == plasmaDHTChunk.chunkStatus_UNDEFINED) ||
// (this.dhtTransferChunk.getStatus() == plasmaDHTChunk.chunkStatus_COMPLETE) ||
(this.dhtTransferChunk.getStatus() == plasmaDHTChunk.chunkStatus_FAILED))) {
// generate new chunk
dhtTransferChunk = new plasmaDHTChunk(this.log, this.wordIndex, this.urlPool.loadedURL, 30, dhtTransferIndexCount);
doneSomething = true;
}
synchronized (sbQueue) {
if (sbQueue.size() == 0) {
// log.logDebug("DEQUEUE: queue is empty");
return doneSomething; // nothing to do
}
/*
if (wordIndex.wordCacheRAMSize() + 1000 > (int) getConfigLong("wordCacheMaxLow", 8000)) {
log.logFine("deQueue: word index ram cache too full (" + ((int) getConfigLong("wordCacheMaxLow", 8000) - wordIndex.wordCacheRAMSize()) + " slots left); dismissed to omit ram flush lock");
return false;
}
*/
int stackCrawlQueueSize;
if ((stackCrawlQueueSize = sbStackCrawlThread.size()) >= stackCrawlSlots) {
log.logFine("deQueue: too many processes in stack crawl thread queue, dismissed to protect emergency case (" + "stackCrawlQueue=" + stackCrawlQueueSize + ")");
return doneSomething;
}
plasmaSwitchboardQueue.Entry nextentry;
// if we were interrupted we should return now
if (Thread.currentThread().isInterrupted()) return false;
// do one processing step
log.logFine("DEQUEUE: sbQueueSize=" + sbQueue.size() +
", coreStackSize=" + urlPool.noticeURL.stackSize(plasmaCrawlNURL.STACK_TYPE_CORE) +
", limitStackSize=" + urlPool.noticeURL.stackSize(plasmaCrawlNURL.STACK_TYPE_LIMIT) +
", overhangStackSize=" + urlPool.noticeURL.stackSize(plasmaCrawlNURL.STACK_TYPE_OVERHANG) +
", remoteStackSize=" + urlPool.noticeURL.stackSize(plasmaCrawlNURL.STACK_TYPE_REMOTE));
try {
nextentry = sbQueue.pop();
if (nextentry == null) return false;
} catch (IOException e) {
log.logSevere("IOError in plasmaSwitchboard.deQueue: " + e.getMessage(), e);
return doneSomething;
}
synchronized (this.indexingTasksInProcess) {
this.indexingTasksInProcess.put(nextentry.urlHash(), nextentry);
}
processResourceStack(nextentry);
}
// ready & finished
return true;
}
public int cleanupJobSize() {
int c = 0;
if ((urlPool.errorURL.stackSize() > 1000)) c++;
for (int i = 1; i <= 6; i++) {
if (urlPool.loadedURL.getStackSize(i) > 1000) c++;
}
return c;
}
public boolean cleanupJob() {
boolean hasDoneSomething = false;
// do transmission of cr-files
int count = rankingOwnDistribution.size() / 100;
if (count == 0) count = 1;
if (count > 5) count = 5;
rankingOwnDistribution.transferRanking(count);
rankingOtherDistribution.transferRanking(1);
// clean up error stack
if ((urlPool.errorURL.stackSize() > 1000)) {
log.logFine("Cleaning Error-URLs report stack, " + urlPool.errorURL.stackSize() + " entries on stack");
urlPool.errorURL.clearStack();
hasDoneSomething = true;
}
// clean up loadedURL stack
for (int i = 1; i <= 6; i++) {
if (urlPool.loadedURL.getStackSize(i) > 1000) {
log.logFine("Cleaning Loaded-URLs report stack, " + urlPool.loadedURL.getStackSize(i) + " entries on stack " + i);
urlPool.loadedURL.clearStack(i);
hasDoneSomething = true;
}
}
// clean up profiles
if (cleanProfiles()) hasDoneSomething = true;
// clean up news
try {
log.logFine("Cleaning Incoming News, " + yacyCore.newsPool.size(yacyNewsPool.INCOMING_DB) + " entries on stack");
if (yacyCore.newsPool.automaticProcess() > 0) hasDoneSomething = true;
} catch (IOException e) {}
return hasDoneSomething;
}
/**
* Creates a new File instance with absolute path of ours Seed File.<br>
* @return a new File instance
*/
public File getOwnSeedFile() {
return new File(getRootPath(), getConfig("yacyOwnSeedFile", "mySeed.txt"));
}
/**
* With this function the crawling process can be paused
*/
public void pauseCrawlJob(String jobType) {
Object[] status = (Object[])this.crawlJobsStatus.get(jobType);
synchronized(status[CRAWLJOB_SYNC]) {
status[CRAWLJOB_STATUS] = Boolean.TRUE;
}
setConfig(jobType + "_isPaused", "true");
}
/**
* Continue the previously paused crawling
*/
public void continueCrawlJob(String jobType) {
Object[] status = (Object[])this.crawlJobsStatus.get(jobType);
synchronized(status[CRAWLJOB_SYNC]) {
if (((Boolean)status[CRAWLJOB_STATUS]).booleanValue()) {
status[CRAWLJOB_STATUS] = Boolean.FALSE;
status[CRAWLJOB_SYNC].notifyAll();
}
}
setConfig(jobType + "_isPaused", "false");
}
/**
* @return <code>true</code> if crawling was paused or <code>false</code> otherwise
*/
public boolean crawlJobIsPaused(String jobType) {
Object[] status = (Object[])this.crawlJobsStatus.get(jobType);
synchronized(status[CRAWLJOB_SYNC]) {
return ((Boolean)status[CRAWLJOB_STATUS]).booleanValue();
}
}
public int coreCrawlJobSize() {
return urlPool.noticeURL.stackSize(plasmaCrawlNURL.STACK_TYPE_CORE);
}
public boolean coreCrawlJob() {
if (urlPool.noticeURL.stackSize(plasmaCrawlNURL.STACK_TYPE_CORE) == 0) {
//log.logDebug("CoreCrawl: queue is empty");
return false;
}
if (sbQueue.size() >= indexingSlots) {
log.logFine("CoreCrawl: too many processes in indexing queue, dismissed (" +
"sbQueueSize=" + sbQueue.size() + ")");
return false;
}
if (cacheLoader.size() >= crawlSlots) {
log.logFine("CoreCrawl: too many processes in loader queue, dismissed (" +
"cacheLoader=" + cacheLoader.size() + ")");
return false;
}
if (onlineCaution()) {
log.logFine("CoreCrawl: online caution, omitting processing");
return false;
}
// if the server is busy, we do crawling more slowly
//if (!(cacheManager.idle())) try {Thread.currentThread().sleep(2000);} catch (InterruptedException e) {}
// if crawling was paused we have to wait until we wer notified to continue
Object[] status = (Object[])this.crawlJobsStatus.get(CRAWLJOB_LOCAL_CRAWL);
synchronized(status[CRAWLJOB_SYNC]) {
if (((Boolean)status[CRAWLJOB_STATUS]).booleanValue()) {
try {
status[CRAWLJOB_SYNC].wait();
}
catch (InterruptedException e){ return false;}
}
}
// do a local crawl
plasmaCrawlNURL.Entry urlEntry = null;
while (urlEntry == null && urlPool.noticeURL.stackSize(plasmaCrawlNURL.STACK_TYPE_CORE) > 0) {
String stats = "LOCALCRAWL[" + urlPool.noticeURL.stackSize(plasmaCrawlNURL.STACK_TYPE_CORE) + ", " + urlPool.noticeURL.stackSize(plasmaCrawlNURL.STACK_TYPE_LIMIT) + ", " + urlPool.noticeURL.stackSize(plasmaCrawlNURL.STACK_TYPE_OVERHANG) + ", " + urlPool.noticeURL.stackSize(plasmaCrawlNURL.STACK_TYPE_REMOTE) + "]";
try {
urlEntry = urlPool.noticeURL.pop(plasmaCrawlNURL.STACK_TYPE_CORE);
String profileHandle = urlEntry.profileHandle();
// System.out.println("DEBUG plasmaSwitchboard.processCrawling:
// profileHandle = " + profileHandle + ", urlEntry.url = " + urlEntry.url());
if (profileHandle == null) {
log.logSevere(stats + ": NULL PROFILE HANDLE '" + urlEntry.profileHandle() + "' (must be internal error) for URL " + urlEntry.url());
return true;
}
plasmaCrawlProfile.entry profile = profiles.getEntry(profileHandle);
if (profile == null) {
log.logSevere(stats + ": LOST PROFILE HANDLE '" + urlEntry.profileHandle() + "' (must be internal error) for URL " + urlEntry.url());
return true;
}
log.logFine("LOCALCRAWL: URL=" + urlEntry.url() + ", initiator=" + urlEntry.initiator() + ", crawlOrder=" + ((profile.remoteIndexing()) ? "true" : "false") + ", depth=" + urlEntry.depth() + ", crawlDepth=" + profile.generalDepth() + ", filter=" + profile.generalFilter()
+ ", permission=" + ((yacyCore.seedDB == null) ? "undefined" : (((yacyCore.seedDB.mySeed.isSenior()) || (yacyCore.seedDB.mySeed.isPrincipal())) ? "true" : "false")));
processLocalCrawling(urlEntry, profile, stats);
return true;
} catch (IOException e) {
log.logSevere(stats + ": CANNOT FETCH ENTRY: " + e.getMessage());
}
}
return true;
}
public int limitCrawlTriggerJobSize() {
return urlPool.noticeURL.stackSize(plasmaCrawlNURL.STACK_TYPE_LIMIT);
}
public boolean limitCrawlTriggerJob() {
if (urlPool.noticeURL.stackSize(plasmaCrawlNURL.STACK_TYPE_LIMIT) == 0) {
//log.logDebug("LimitCrawl: queue is empty");
return false;
}
if ((coreCrawlJobSize() <= 20) && (limitCrawlTriggerJobSize() > 100)) {
// it is not efficient if the core crawl job is empty and we have too much to do
// move some tasks to the core crawl job
int toshift = limitCrawlTriggerJobSize() / 5;
if (toshift > 1000) toshift = 1000;
if (toshift > limitCrawlTriggerJobSize()) toshift = limitCrawlTriggerJobSize();
for (int i = 0; i < toshift; i++) {
urlPool.noticeURL.shift(plasmaCrawlNURL.STACK_TYPE_LIMIT, plasmaCrawlNURL.STACK_TYPE_CORE);
}
log.logInfo("shifted " + toshift + " jobs from global crawl to local crawl");
}
// if the server is busy, we do crawling more slowly
//if (!(cacheManager.idle())) try {Thread.currentThread().sleep(2000);} catch (InterruptedException e) {}
// if crawling was paused we have to wait until we wer notified to continue
Object[] status = (Object[])this.crawlJobsStatus.get(CRAWLJOB_GLOBAL_CRAWL_TRIGGER);
synchronized(status[CRAWLJOB_SYNC]) {
if (((Boolean)status[CRAWLJOB_STATUS]).booleanValue()) {
try {
status[CRAWLJOB_SYNC].wait();
}
catch (InterruptedException e){ return false;}
}
}
// start a global crawl, if possible
String stats = "REMOTECRAWLTRIGGER[" + urlPool.noticeURL.stackSize(plasmaCrawlNURL.STACK_TYPE_CORE) + ", " + urlPool.noticeURL.stackSize(plasmaCrawlNURL.STACK_TYPE_LIMIT) + ", " + urlPool.noticeURL.stackSize(plasmaCrawlNURL.STACK_TYPE_OVERHANG) + ", "
+ urlPool.noticeURL.stackSize(plasmaCrawlNURL.STACK_TYPE_REMOTE) + "]";
try {
plasmaCrawlNURL.Entry urlEntry = urlPool.noticeURL.pop(plasmaCrawlNURL.STACK_TYPE_LIMIT);
String profileHandle = urlEntry.profileHandle();
// System.out.println("DEBUG plasmaSwitchboard.processCrawling:
// profileHandle = " + profileHandle + ", urlEntry.url = " + urlEntry.url());
plasmaCrawlProfile.entry profile = profiles.getEntry(profileHandle);
if (profile == null) {
log.logSevere(stats + ": LOST PROFILE HANDLE '" + urlEntry.profileHandle() + "' (must be internal error) for URL " + urlEntry.url());
return true;
}
log.logFine("plasmaSwitchboard.limitCrawlTriggerJob: url=" + urlEntry.url() + ", initiator=" + urlEntry.initiator() + ", crawlOrder=" + ((profile.remoteIndexing()) ? "true" : "false") + ", depth=" + urlEntry.depth() + ", crawlDepth=" + profile.generalDepth() + ", filter="
+ profile.generalFilter() + ", permission=" + ((yacyCore.seedDB == null) ? "undefined" : (((yacyCore.seedDB.mySeed.isSenior()) || (yacyCore.seedDB.mySeed.isPrincipal())) ? "true" : "false")));
boolean tryRemote = ((urlPool.noticeURL.stackSize(plasmaCrawlNURL.STACK_TYPE_CORE) != 0) || (sbQueue.size() != 0)) &&
(profile.remoteIndexing()) &&
(urlEntry.initiator() != null) &&
// (!(urlEntry.initiator().equals(plasmaURL.dummyHash))) &&
((yacyCore.seedDB.mySeed.isSenior()) || (yacyCore.seedDB.mySeed.isPrincipal()));
if (tryRemote) {
boolean success = processRemoteCrawlTrigger(urlEntry);
if (success) return true;
}
processLocalCrawling(urlEntry, profile, stats); // emergency case
if (sbQueue.size() >= indexingSlots) {
log.logFine("LimitCrawl: too many processes in indexing queue, delayed to protect emergency case (" +
"sbQueueSize=" + sbQueue.size() + ")");
return false;
}
if (cacheLoader.size() >= crawlSlots) {
log.logFine("LimitCrawl: too many processes in loader queue, delayed to protect emergency case (" +
"cacheLoader=" + cacheLoader.size() + ")");
return false;
}
return true;
} catch (IOException e) {
log.logSevere(stats + ": CANNOT FETCH ENTRY: " + e.getMessage());
return true; // if we return a false here we will block everything
}
}
public int remoteTriggeredCrawlJobSize() {
return urlPool.noticeURL.stackSize(plasmaCrawlNURL.STACK_TYPE_REMOTE);
}
public boolean remoteTriggeredCrawlJob() {
// work off crawl requests that had been placed by other peers to our crawl stack
// do nothing if either there are private processes to be done
// or there is no global crawl on the stack
if (urlPool.noticeURL.stackSize(plasmaCrawlNURL.STACK_TYPE_REMOTE) == 0) {
//log.logDebug("GlobalCrawl: queue is empty");
return false;
}
if (sbQueue.size() >= indexingSlots) {
log.logFine("GlobalCrawl: too many processes in indexing queue, dismissed (" +
"sbQueueSize=" + sbQueue.size() + ")");
return false;
}
if (cacheLoader.size() >= crawlSlots) {
log.logFine("GlobalCrawl: too many processes in loader queue, dismissed (" +
"cacheLoader=" + cacheLoader.size() + ")");
return false;
}
if (onlineCaution()) {
log.logFine("GlobalCrawl: online caution, omitting processing");
return false;
}
// if crawling was paused we have to wait until we wer notified to continue
Object[] status = (Object[])this.crawlJobsStatus.get(CRAWLJOB_REMOTE_TRIGGERED_CRAWL);
synchronized(status[CRAWLJOB_SYNC]) {
if (((Boolean)status[CRAWLJOB_STATUS]).booleanValue()) {
try {
status[CRAWLJOB_SYNC].wait();
}
catch (InterruptedException e){ return false;}
}
}
// we don't want to crawl a global URL globally, since WE are the global part. (from this point of view)
String stats = "REMOTETRIGGEREDCRAWL[" + urlPool.noticeURL.stackSize(plasmaCrawlNURL.STACK_TYPE_CORE) + ", " + urlPool.noticeURL.stackSize(plasmaCrawlNURL.STACK_TYPE_LIMIT) + ", " + urlPool.noticeURL.stackSize(plasmaCrawlNURL.STACK_TYPE_OVERHANG) + ", "
+ urlPool.noticeURL.stackSize(plasmaCrawlNURL.STACK_TYPE_REMOTE) + "]";
try {
plasmaCrawlNURL.Entry urlEntry = urlPool.noticeURL.pop(plasmaCrawlNURL.STACK_TYPE_REMOTE);
String profileHandle = urlEntry.profileHandle();
// System.out.println("DEBUG plasmaSwitchboard.processCrawling:
// profileHandle = " + profileHandle + ", urlEntry.url = " +
// urlEntry.url());
plasmaCrawlProfile.entry profile = profiles.getEntry(profileHandle);
if (profile == null) {
log.logSevere(stats + ": LOST PROFILE HANDLE '" + urlEntry.profileHandle() + "' (must be internal error) for URL " + urlEntry.url());
return false;
}
log.logFine("plasmaSwitchboard.remoteTriggeredCrawlJob: url=" + urlEntry.url() + ", initiator=" + urlEntry.initiator() + ", crawlOrder=" + ((profile.remoteIndexing()) ? "true" : "false") + ", depth=" + urlEntry.depth() + ", crawlDepth=" + profile.generalDepth() + ", filter="
+ profile.generalFilter() + ", permission=" + ((yacyCore.seedDB == null) ? "undefined" : (((yacyCore.seedDB.mySeed.isSenior()) || (yacyCore.seedDB.mySeed.isPrincipal())) ? "true" : "false")));
processLocalCrawling(urlEntry, profile, stats);
return true;
} catch (IOException e) {
log.logSevere(stats + ": CANNOT FETCH ENTRY: " + e.getMessage());
return true;
}
}
private void processResourceStack(plasmaSwitchboardQueue.Entry entry) {
try {
// work off one stack entry with a fresh resource
long stackStartTime = 0, stackEndTime = 0,
parsingStartTime = 0, parsingEndTime = 0,
indexingStartTime = 0, indexingEndTime = 0,
storageStartTime = 0, storageEndTime = 0;
// we must distinguish the following cases: resource-load was initiated by
// 1) global crawling: the index is extern, not here (not possible here)
// 2) result of search queries, some indexes are here (not possible here)
// 3) result of index transfer, some of them are here (not possible here)
// 4) proxy-load (initiator is "------------")
// 5) local prefetch/crawling (initiator is own seedHash)
// 6) local fetching for global crawling (other known or unknwon initiator)
int processCase = 0;
yacySeed initiator = null;
String initiatorHash = (entry.proxy()) ? plasmaURL.dummyHash : entry.initiator();
if (initiatorHash.equals(plasmaURL.dummyHash)) {
// proxy-load
processCase = 4;
} else if (initiatorHash.equals(yacyCore.seedDB.mySeed.hash)) {
// normal crawling
processCase = 5;
} else {
// this was done for remote peer (a global crawl)
initiator = yacyCore.seedDB.getConnected(initiatorHash);
processCase = 6;
}
log.logFine("processResourceStack processCase=" + processCase +
", depth=" + entry.depth() +
", maxDepth=" + ((entry.profile() == null) ? "null" : Integer.toString(entry.profile().generalDepth())) +
", filter=" + ((entry.profile() == null) ? "null" : entry.profile().generalFilter()) +
", initiatorHash=" + initiatorHash +
", responseHeader=" + ((entry.responseHeader() == null) ? "null" : entry.responseHeader().toString()) +
", url=" + entry.url()); // DEBUG
// parse content
parsingStartTime = System.currentTimeMillis();
plasmaParserDocument document = null;
httpHeader entryRespHeader = entry.responseHeader();
String mimeType = (entryRespHeader == null)?null:entryRespHeader.mime();
if (plasmaParser.supportedContent(
entry.url(),
mimeType)
){
if ((entry.cacheFile().exists()) && (entry.cacheFile().length() > 0)) {
log.logFine("(Parser) '" + entry.normalizedURLString() + "' is not parsed yet, parsing now from File");
document = parser.parseSource(entry.url(), mimeType, entry.cacheFile());
} else {
log.logFine("(Parser) '" + entry.normalizedURLString() + "' cannot be parsed, no resource available");
return;
}
if (document == null) {
log.logSevere("(Parser) '" + entry.normalizedURLString() + "' parse failure");
return;
}
} else {
log.logFine("(Parser) '" + entry.normalizedURLString() + "'. Unsupported mimeType '" + ((mimeType == null) ? "null" : mimeType) + "'.");
return;
}
parsingEndTime = System.currentTimeMillis();
Date docDate = null;
if (entry.responseHeader() != null) {
docDate = entry.responseHeader().lastModified();
if (docDate == null) docDate = entry.responseHeader().date();
}
if (docDate == null) docDate = new Date();
// put anchors on crawl stack
stackStartTime = System.currentTimeMillis();
if (((processCase == 4) || (processCase == 5)) &&
((entry.profile() == null) || (entry.depth() < entry.profile().generalDepth()))) {
Map hl = document.getHyperlinks();
Iterator i = hl.entrySet().iterator();
String nexturlstring;
//String rejectReason;
Map.Entry e;
while (i.hasNext()) {
e = (Map.Entry) i.next();
nexturlstring = (String) e.getKey();
nexturlstring = htmlFilterContentScraper.urlNormalform(null, nexturlstring);
sbStackCrawlThread.enqueue(nexturlstring, entry.url().toString(), initiatorHash, (String) e.getValue(), docDate, entry.depth() + 1, entry.profile());
// rejectReason = stackCrawl(nexturlstring, entry.normalizedURLString(), initiatorHash, (String) e.getValue(), loadDate, entry.depth() + 1, entry.profile());
// if (rejectReason == null) { c++; } else {
// urlPool.errorURL.newEntry(new URL(nexturlstring), entry.normalizedURLString(), entry.initiator(), yacyCore.seedDB.mySeed.hash,
// (String) e.getValue(), rejectReason, new bitfield(plasmaURL.urlFlagLength), false);
// }
}
log.logInfo("CRAWL: ADDED " + hl.size() + " LINKS FROM " + entry.normalizedURLString() +
", NEW CRAWL STACK SIZE IS " + urlPool.noticeURL.stackSize(plasmaCrawlNURL.STACK_TYPE_CORE));
}
stackEndTime = System.currentTimeMillis();
// create index
String descr = document.getMainLongTitle();
String referrerHash;
URL referrerURL = entry.referrerURL();
referrerHash = plasmaURL.urlHash(referrerURL);
if (referrerHash == null) referrerHash = plasmaURL.dummyHash;
String noIndexReason = "unspecified";
if (processCase == 4) {
// proxy-load
noIndexReason = entry.shallIndexCacheForProxy();
} else {
// normal crawling
noIndexReason = entry.shallIndexCacheForCrawler();
}
if (noIndexReason == null) {
// strip out words
indexingStartTime = System.currentTimeMillis();
log.logFine("Condensing for '" + entry.normalizedURLString() + "'");
plasmaCondenser condenser = new plasmaCondenser(new ByteArrayInputStream(document.getText()));
// generate citation reference
Integer[] ioLinks = generateCitationReference(entry.urlHash(), docDate, document, condenser);
//log.logInfo("INDEXING HEADLINE:" + descr);
try {
//log.logDebug("Create LURL-Entry for '" + entry.normalizedURLString() + "', " +
// "responseHeader=" + entry.responseHeader().toString());
plasmaCrawlLURL.Entry newEntry = urlPool.loadedURL.newEntry(
entry.url(), descr, docDate, new Date(),
referrerHash,
0, true,
condenser.RESULT_WORD_ENTROPHY,
plasmaWordIndexEntry.language(entry.url()),
plasmaWordIndexEntry.docType(document.getMimeType()),
(int) entry.size(),
condenser.RESULT_NUMB_WORDS
);
newEntry.store();
urlPool.loadedURL.stackEntry(
newEntry,
initiatorHash,
yacyCore.seedDB.mySeed.hash,
processCase
);
String urlHash = newEntry.hash();
if (((processCase == 4) || (processCase == 5) || (processCase == 6)) && (entry.profile().localIndexing())) {
// remove stopwords
log.logInfo("Excluded " + condenser.excludeWords(stopwords) + " words in URL " + entry.url());
indexingEndTime = System.currentTimeMillis();
// do indexing
//log.logDebug("Create Index for '" + entry.normalizedURLString() + "'");
storageStartTime = System.currentTimeMillis();
int words = 0;
String storagePeerHash;
yacySeed seed;
if (((storagePeerHash = getConfig("storagePeerHash",null))== null) ||
(storagePeerHash.trim().length() == 0) ||
((seed = yacyCore.seedDB.getConnected(storagePeerHash))==null)){
words = wordIndex.addPageIndex(entry.url(), urlHash, docDate, (int) entry.size(), document, condenser,
plasmaWordIndexEntry.language(entry.url()), plasmaWordIndexEntry.docType(document.getMimeType()),
ioLinks[0].intValue(), ioLinks[1].intValue());
} else {
HashMap urlCache = new HashMap(1);
urlCache.put(newEntry.hash(),newEntry);
ArrayList tmpContainers = new ArrayList(condenser.RESULT_SIMI_WORDS);
String language = plasmaWordIndexEntry.language(entry.url());
char doctype = plasmaWordIndexEntry.docType(document.getMimeType());
int urlLength = newEntry.url().toString().length();
int urlComps = htmlFilterContentScraper.urlComps(newEntry.url().toString()).length;
// iterate over all words
Iterator i = condenser.words();
Map.Entry wentry;
plasmaCondenser.wordStatProp wordStat;
while (i.hasNext()) {
wentry = (Map.Entry) i.next();
String word = (String) wentry.getKey();
wordStat = (plasmaCondenser.wordStatProp) wentry.getValue();
String wordHash = plasmaWordIndexEntry.word2hash(word);
plasmaWordIndexEntryContainer wordIdxContainer = new plasmaWordIndexEntryContainer(wordHash);
plasmaWordIndexEntry wordIdxEntry = new plasmaWordIndexEntry(urlHash,
urlLength, urlComps,
wordStat.count,
document.longTitle.length(),
condenser.RESULT_SIMI_WORDS,
condenser.RESULT_SIMI_SENTENCES,
wordStat.posInText,
wordStat.posInPhrase,
wordStat.numOfPhrase,
0,
newEntry.size(),
docDate.getTime(),
System.currentTimeMillis(),
condenser.RESULT_WORD_ENTROPHY,
language,
doctype,
ioLinks[0].intValue(),
ioLinks[1].intValue(),
true);
wordIdxContainer.add(wordIdxEntry);
tmpContainers.add(wordIdxContainer);
// wordIndex.addEntries(plasmaWordIndexEntryContainer.instantContainer(wordHash, System.currentTimeMillis(), entry));
}
//System.out.println("DEBUG: plasmaSearch.addPageIndex: added " + condenser.getWords().size() + " words, flushed " + c + " entries");
words = condenser.RESULT_SIMI_WORDS;
// transfering the index to the storage peer
String error = yacyClient.transferIndex(
seed,
(plasmaWordIndexEntryContainer[])tmpContainers.toArray(new plasmaWordIndexEntryContainer[tmpContainers.size()]),
urlCache,
true,
120000);
if (error != null) {
words = wordIndex.addPageIndex(entry.url(), urlHash, docDate, (int) entry.size(),
document, condenser,
plasmaWordIndexEntry.language(entry.url()),
plasmaWordIndexEntry.docType(document.getMimeType()),
ioLinks[0].intValue(), ioLinks[1].intValue());
}
tmpContainers = null;
}
storageEndTime = System.currentTimeMillis();
if (log.isLoggable(Level.INFO)) {
log.logInfo("*Indexed " + words + " words in URL " + entry.url() +
" [" + entry.urlHash() + "]" +
"\n\tDescription: " + descr +
"\n\tMimeType: " + document.getMimeType() + " | " +
"Size: " + document.text.length + " bytes | " +
"Anchors: " + ((document.anchors==null)?0:document.anchors.size()) +
"\n\tStackingTime: " + (stackEndTime-stackStartTime) + " ms | " +
"ParsingTime: " + (parsingEndTime-parsingStartTime) + " ms | " +
"IndexingTime: " + (indexingEndTime-indexingStartTime) + " ms | " +
"StorageTime: " + (storageEndTime-storageStartTime) + " ms");
}
// if this was performed for a remote crawl request, notify requester
if ((processCase == 6) && (initiator != null)) {
log.logInfo("Sending crawl receipt for '" + entry.normalizedURLString() + "' to " + initiator.getName());
yacyClient.crawlReceipt(initiator, "crawl", "fill", "indexed", newEntry, "");
}
} else {
log.logFine("Not Indexed Resource '" + entry.normalizedURLString() + "': process case=" + processCase);
}
} catch (Exception ee) {
log.logSevere("Could not index URL " + entry.url() + ": " + ee.getMessage(), ee);
if ((processCase == 6) && (initiator != null)) {
yacyClient.crawlReceipt(initiator, "crawl", "exception", ee.getMessage(), null, "");
}
}
} else {
log.logInfo("Not indexed any word in URL " + entry.url() + "; cause: " + noIndexReason);
urlPool.errorURL.newEntry(entry.url(), referrerHash,
((entry.proxy()) ? plasmaURL.dummyHash : entry.initiator()),
yacyCore.seedDB.mySeed.hash,
descr, noIndexReason, new bitfield(plasmaURL.urlFlagLength), true);
if ((processCase == 6) && (initiator != null)) {
yacyClient.crawlReceipt(initiator, "crawl", "rejected", noIndexReason, null, "");
}
}
document = null;
} finally {
// The following code must be into the finally block, otherwise it will not be executed
// on errors!
// removing current entry from in process list
synchronized (this.indexingTasksInProcess) {
this.indexingTasksInProcess.remove(entry.urlHash());
}
// removing current entry from notice URL queue
boolean removed = urlPool.noticeURL.remove(entry.urlHash()); // worked-off
if (!removed) {
log.logFinest("Unable to remove indexed URL " + entry.url() + " from Crawler Queue. This could be because of an URL redirect.");
}
// explicit delete/free resources
if ((entry != null) && (entry.profile() != null) && (!(entry.profile().storeHTCache()))) {
plasmaHTCache.filesInUse.remove(entry.cacheFile());
cacheManager.deleteFile(entry.url());
}
entry = null;
}
}
private Integer[] /*(outlinksSame, outlinksOther)*/ generateCitationReference(String baseurlhash, Date docDate, plasmaParserDocument document, plasmaCondenser condenser) {
// generate citation reference
Map hl = document.getHyperlinks();
Iterator it = hl.entrySet().iterator();
String nexturlhash;
StringBuffer cpg = new StringBuffer(12 * (hl.size() + 1) + 1);
StringBuffer cpl = new StringBuffer(12 * (hl.size() + 1) + 1);
String lhp = baseurlhash.substring(6); // local hash part
int GCount = 0;
int LCount = 0;
while (it.hasNext()) {
nexturlhash = plasmaURL.urlHash((String) ((Map.Entry) it.next()).getKey());
if (nexturlhash != null) {
if (nexturlhash.substring(6).equals(lhp)) {
cpl.append(nexturlhash.substring(0, 6));
LCount++;
} else {
cpg.append(nexturlhash);
GCount++;
}
}
}
// append this reference to buffer
// generate header info
String head = baseurlhash + "=" +
plasmaWordIndex.microDateHoursStr(docDate.getTime()) + // latest update timestamp of the URL
plasmaWordIndex.microDateHoursStr(System.currentTimeMillis()) + // last visit timestamp of the URL
kelondroBase64Order.enhancedCoder.encodeLongSmart(LCount, 2) + // count of links to local resources
kelondroBase64Order.enhancedCoder.encodeLongSmart(GCount, 2) + // count of links to global resources
kelondroBase64Order.enhancedCoder.encodeLongSmart(document.getImages().size(), 2) + // count of Images in document
kelondroBase64Order.enhancedCoder.encodeLongSmart(0, 2) + // count of links to other documents
kelondroBase64Order.enhancedCoder.encodeLongSmart(document.getText().length, 3) + // length of plain text in bytes
kelondroBase64Order.enhancedCoder.encodeLongSmart(condenser.RESULT_NUMB_WORDS, 3) + // count of all appearing words
kelondroBase64Order.enhancedCoder.encodeLongSmart(condenser.RESULT_SIMI_WORDS, 3) + // count of all unique words
kelondroBase64Order.enhancedCoder.encodeLongSmart(0, 1); // Flags (update, popularity, attention, vote)
//crl.append(head); crl.append ('|'); crl.append(cpl); crl.append((char) 13); crl.append((char) 10);
crg.append(head); crg.append('|'); crg.append(cpg); crg.append((char) 13); crg.append((char) 10);
// if buffer is full, flush it.
/*
if (crl.length() > maxCRLDump) {
flushCitationReference(crl, "crl");
crl = new StringBuffer(maxCRLDump);
}
**/
if (crg.length() > maxCRGDump) {
flushCitationReference(crg, "crg");
crg = new StringBuffer(maxCRGDump);
}
return new Integer[] {new Integer(LCount), new Integer(GCount)};
}
private void flushCitationReference(StringBuffer cr, String type) {
if (cr.length() < 12) return;
String filename = type.toUpperCase() + "-A-" + new serverDate().toShortString(true) + "." + cr.substring(0, 12) + ".cr.gz";
File path = new File(rankingPath, (type.equals("crl") ? "LOCAL/010_cr/" : getConfig("CRDist0Path", plasmaRankingDistribution.CR_OWN)));
path.mkdirs();
File file = new File(path, filename);
// generate header
StringBuffer header = new StringBuffer(200);
header.append("# Name=YaCy " + ((type.equals("crl")) ? "Local" : "Global") + " Citation Reference Ticket"); header.append((char) 13); header.append((char) 10);
header.append("# Created=" + System.currentTimeMillis()); header.append((char) 13); header.append((char) 10);
header.append("# Structure=<Referee-12>,'=',<UDate-3>,<VDate-3>,<LCount-2>,<GCount-2>,<ICount-2>,<DCount-2>,<TLength-3>,<WACount-3>,<WUCount-3>,<Flags-1>,'|',*<Anchor-" + ((type.equals("crl")) ? "6" : "12") + ">"); header.append((char) 13); header.append((char) 10);
header.append("# ---"); header.append((char) 13); header.append((char) 10);
cr.insert(0, header.toString());
try {
serverFileUtils.writeAndGZip(cr.toString().getBytes(), file);
log.logFine("wrote citation reference dump " + file.toString());
} catch (IOException e) {
e.printStackTrace();
}
}
private void processLocalCrawling(plasmaCrawlNURL.Entry urlEntry, plasmaCrawlProfile.entry profile, String stats) {
// work off one Crawl stack entry
if ((urlEntry == null) || (urlEntry.url() == null)) {
log.logInfo(stats + ": urlEntry=null");
return;
}
URL refererURL = null;
String refererHash = urlEntry.referrerHash();
if ((refererHash != null) && (!refererHash.equals(plasmaURL.dummyHash))) try {
refererURL = this.urlPool.getURL(refererHash);
} catch (IOException e) {
refererURL = null;
}
cacheLoader.loadParallel(urlEntry.url(), urlEntry.name(), (refererURL!=null)?refererURL.toString():null, urlEntry.initiator(), urlEntry.depth(), profile);
log.logInfo(stats + ": enqueued for load " + urlEntry.url() + " [" + urlEntry.hash() + "]");
return;
}
private boolean processRemoteCrawlTrigger(plasmaCrawlNURL.Entry urlEntry) {
// return true iff another peer has/will index(ed) the url
if (urlEntry == null) {
log.logInfo("REMOTECRAWLTRIGGER[" + urlPool.noticeURL.stackSize(plasmaCrawlNURL.STACK_TYPE_CORE) + ", " + urlPool.noticeURL.stackSize(plasmaCrawlNURL.STACK_TYPE_REMOTE) + "]: urlEntry=null");
return true; // superfluous request; true correct in this context
}
// are we qualified?
if ((yacyCore.seedDB.mySeed == null) ||
(yacyCore.seedDB.mySeed.isJunior())) {
log.logFine("plasmaSwitchboard.processRemoteCrawlTrigger: no permission");
return false;
}
// check url
if (urlEntry.url() == null) {
log.logFine("ERROR: plasmaSwitchboard.processRemoteCrawlTrigger - url is null. name=" + urlEntry.name());
return true;
}
String urlhash = plasmaURL.urlHash(urlEntry.url());
// check remote crawl
yacySeed remoteSeed = yacyCore.dhtAgent.getCrawlSeed(urlhash);
if (remoteSeed == null) {
log.logFine("plasmaSwitchboard.processRemoteCrawlTrigger: no remote crawl seed available");
return false;
}
// do the request
try {
HashMap page = yacyClient.crawlOrder(remoteSeed, urlEntry.url(), urlPool.getURL(urlEntry.referrerHash()), 6000);
// check success
/*
* the result of the 'response' value can have one of the following
* values: negative cases, no retry denied - the peer does not want
* to crawl that exception - an exception occurred
*
* negative case, retry possible rejected - the peer has rejected to
* process, but a re-try should be possible
*
* positive case with crawling stacked - the resource is processed
* asap
*
* positive case without crawling double - the resource is already
* in database, believed to be fresh and not reloaded the resource
* is also returned in lurl
*/
if ((page == null) || (page.get("delay") == null)) {
log.logInfo("CRAWL: REMOTE CRAWL TO PEER " + remoteSeed.getName() + " FAILED. CAUSE: unknown (URL=" + urlEntry.url().toString() + ")");
if (remoteSeed != null)
yacyCore.peerActions.peerDeparture(remoteSeed);
return false;
} else
try {
log.logFine("plasmaSwitchboard.processRemoteCrawlTrigger: remoteSeed=" + remoteSeed.getName() + ", url=" + urlEntry.url().toString() + ", response=" + page.toString()); // DEBUG
int newdelay = Integer.parseInt((String) page.get("delay"));
yacyCore.dhtAgent.setCrawlDelay(remoteSeed.hash, newdelay);
String response = (String) page.get("response");
if (response.equals("stacked")) {
log.logInfo(STR_REMOTECRAWLTRIGGER + remoteSeed.getName() + " PLACED URL=" + urlEntry.url().toString() + "; NEW DELAY=" + newdelay);
return true;
} else if (response.equals("double")) {
String lurl = (String) page.get("lurl");
if ((lurl != null) && (lurl.length() != 0)) {
String propStr = crypt.simpleDecode(lurl, (String) page.get("key"));
plasmaCrawlLURL.Entry entry = urlPool.loadedURL.newEntry(propStr, true);
entry.store();
urlPool.loadedURL.stackEntry(entry, yacyCore.seedDB.mySeed.hash, remoteSeed.hash, 1); // *** ueberfluessig/doppelt?
urlPool.noticeURL.remove(entry.hash());
log.logInfo(STR_REMOTECRAWLTRIGGER + remoteSeed.getName() + " SUPERFLUOUS. CAUSE: " + page.get("reason") + " (URL=" + urlEntry.url().toString() + "). URL IS CONSIDERED AS 'LOADED!'");
return true;
} else {
log.logInfo(STR_REMOTECRAWLTRIGGER + remoteSeed.getName() + " REJECTED. CAUSE: " + page.get("reason") + " (URL=" + urlEntry.url().toString() + ")");
return false;
}
} else {
log.logInfo(STR_REMOTECRAWLTRIGGER + remoteSeed.getName() + " DENIED. RESPONSE=" + response + ", CAUSE=" + page.get("reason") + ", URL=" + urlEntry.url().toString());
return false;
}
} catch (Exception e) {
// wrong values
log.logSevere(STR_REMOTECRAWLTRIGGER + remoteSeed.getName() + " FAILED. CLIENT RETURNED: " + page.toString(), e);
return false;
}
} catch (IOException e) {
log.logSevere(STR_REMOTECRAWLTRIGGER + remoteSeed.getName() + " FAILED. URL CANNOT BE RETRIEVED from referrer hash: " + urlEntry.referrerHash(), e);
return false;
}
}
private static SimpleDateFormat DateFormatter = new SimpleDateFormat("EEE, dd MMM yyyy");
public static String dateString(Date date) {
if (date == null) return ""; else return DateFormatter.format(date);
}
public serverObjects searchFromLocal(plasmaSearchQuery query,
plasmaSearchRankingProfile ranking,
plasmaSearchTimingProfile localTiming,
plasmaSearchTimingProfile remoteTiming) {
// tell all threads to do nothing for a specific time
intermissionAllThreads(2 * query.maximumTime);
serverObjects prop = new serverObjects();
try {
// filter out words that appear in bluelist
//log.logInfo("E");
query.filterOut(blueList);
// log
log.logInfo("INIT WORD SEARCH: " + query.queryWords + ":" + query.queryHashes + " - " + query.wantedResults + " links, " + (query.maximumTime / 1000) + " seconds");
long timestamp = System.currentTimeMillis();
// start a presearch, which makes only sense if we idle afterwards.
// this is especially the case if we start a global search and idle until search
//if (query.domType == plasmaSearchQuery.SEARCHDOM_GLOBALDHT) {
// Thread preselect = new presearch(query.queryHashes, order, query.maximumTime / 10, query.urlMask, 10, 3);
// preselect.start();
//}
// create a new search event
plasmaSearchEvent theSearch = new plasmaSearchEvent(query, ranking, localTiming, remoteTiming, log, wordIndex, urlPool.loadedURL, snippetCache);
plasmaSearchResult acc = theSearch.search();
// fetch snippets
//if (query.domType != plasmaSearchQuery.SEARCHDOM_GLOBALDHT) snippetCache.fetch(acc.cloneSmart(), query.queryHashes, query.urlMask, 10, 1000);
log.logFine("SEARCH TIME AFTER ORDERING OF SEARCH RESULTS: " + ((System.currentTimeMillis() - timestamp) / 1000) + " seconds");
// result is a List of urlEntry elements: prepare answer
if (acc == null) {
prop.put("type_totalcount", "0");
prop.put("type_orderedcount", "0");
prop.put("type_linkcount", "0");
} else {
prop.put("type_totalcount", acc.globalContributions + acc.localContributions);
prop.put("type_orderedcount", Integer.toString(acc.sizeOrdered()));
prop.put("type_globalresults", acc.globalContributions);
int i = 0;
int p;
URL url;
plasmaCrawlLURL.Entry urlentry;
String urlstring, urlname, filename, urlhash;
String host, hash, address, descr = "";
yacySeed seed;
plasmaSnippetCache.result snippet;
String formerSearch = query.words(" ");
long targetTime = timestamp + query.maximumTime;
if (targetTime < System.currentTimeMillis()) targetTime = System.currentTimeMillis() + 5000;
while ((acc.hasMoreElements()) && (i < query.wantedResults) && (System.currentTimeMillis() < targetTime)) {
urlentry = acc.nextElement();
url = urlentry.url();
urlhash = urlentry.hash();
host = url.getHost();
if (host.endsWith(".yacyh")) {
// translate host into current IP
p = host.indexOf(".");
hash = yacySeed.hexHash2b64Hash(host.substring(p + 1, host.length() - 6));
seed = yacyCore.seedDB.getConnected(hash);
filename = url.getFile();
if ((seed == null) || ((address = seed.getAddress()) == null)) {
// seed is not known from here
removeReferences(urlentry.hash(), plasmaCondenser.getWords(("yacyshare " + filename.replace('?', ' ') + " " + urlentry.descr()).getBytes()));
urlPool.loadedURL.remove(urlentry.hash()); // clean up
continue; // next result
}
url = new URL("http://" + address + "/" + host.substring(0, p) + filename);
urlname = "http://share." + seed.getName() + ".yacy" + filename;
if ((p = urlname.indexOf("?")) > 0) urlname = urlname.substring(0, p);
urlstring = htmlFilterContentScraper.urlNormalform(url);
} else {
urlstring = htmlFilterContentScraper.urlNormalform(url);
urlname = urlstring;
}
descr = urlentry.descr();
// check bluelist again: filter out all links where any bluelisted word
// appear either in url, url's description or search word
// the search word was sorted out earlier
/*
String s = descr.toLowerCase() + url.toString().toLowerCase();
for (int c = 0; c < blueList.length; c++) {
if (s.indexOf(blueList[c]) >= 0) return;
}
*/
//addScoreForked(ref, gs, descr.split(" "));
//addScoreForked(ref, gs, urlstring.split("/"));
if (urlstring.matches(query.urlMask)) { //.* is default
snippet = snippetCache.retrieve(url, query.queryHashes, false, 260);
if (snippet.getSource() == plasmaSnippetCache.ERROR_NO_MATCH) {
// suppress line: there is no match in that resource
} else {
prop.put("type_results_" + i + "_delete", "/yacysearch.html?search=" + formerSearch + "&Enter=Search&count=" + query.wantedResults + "&order=" + ranking.orderString() + "&resource=local&time=3&deleteref=" + urlhash + "&urlmaskfilter=.*");
prop.put("type_results_" + i + "_description", descr);
prop.put("type_results_" + i + "_url", urlstring);
prop.put("type_results_" + i + "_urlhash", urlhash);
prop.put("type_results_" + i + "_urlhexhash", yacySeed.b64Hash2hexHash(urlhash));
prop.put("type_results_" + i + "_urlname", nxTools.cutUrlText(urlname, 120));
prop.put("type_results_" + i + "_date", dateString(urlentry.moddate()));
prop.put("type_results_" + i + "_ybr", plasmaSearchPreOrder.ybr(urlentry.hash()));
prop.put("type_results_" + i + "_size", Long.toString(urlentry.size()));
prop.put("type_results_" + i + "_words", URLEncoder.encode(query.queryWords.toString(),"UTF-8"));
prop.put("type_results_" + i + "_former", formerSearch);
// adding snippet if available
if (snippet.exists()) {
prop.put("type_results_" + i + "_snippet", 1);
prop.put("type_results_" + i + "_snippet_text", snippet.getLineMarked(query.queryHashes));
} else {
prop.put("type_results_" + i + "_snippet", 0);
prop.put("type_results_" + i + "_snippet_text", "");
}
i++;
}
}
}
log.logFine("SEARCH TIME AFTER RESULT PREPARATION: " + ((System.currentTimeMillis() - timestamp) / 1000) + " seconds");
// calc some more cross-reference
long remainingTime = query.maximumTime - (System.currentTimeMillis() - timestamp);
if (remainingTime < 0) remainingTime = 1000;
/*
while ((acc.hasMoreElements()) && (((time + timestamp) < System.currentTimeMillis()))) {
urlentry = acc.nextElement();
urlstring = htmlFilterContentScraper.urlNormalform(urlentry.url());
descr = urlentry.descr();
addScoreForked(ref, gs, descr.split(" "));
addScoreForked(ref, gs, urlstring.split("/"));
}
**/
//Object[] ws = ref.getScores(16, false, 2, Integer.MAX_VALUE);
Object[] ws = acc.getReferences(16);
log.logFine("SEARCH TIME AFTER XREF PREPARATION: " + ((System.currentTimeMillis() - timestamp) / 1000) + " seconds");
/*
System.out.print("DEBUG WORD-SCORE: ");
for (int ii = 0; ii < ws.length; ii++) System.out.print(ws[ii] + ", ");
System.out.println(" all words = " + ref.getElementCount() + ", total count = " + ref.getTotalCount());
*/
prop.put("type_references", ws);
prop.put("type_linkcount", Integer.toString(i));
prop.put("type_results", Integer.toString(i));
}
// log
log.logInfo("EXIT WORD SEARCH: " + query.queryWords + " - " +
prop.get("type_totalcount", "0") + " links found, " +
prop.get("type_orderedcount", "0") + " links ordered, " +
prop.get("type_linkcount", "?") + " links selected, " +
((System.currentTimeMillis() - timestamp) / 1000) + " seconds");
return prop;
} catch (IOException e) {
return null;
}
}
public serverObjects action(String actionName, serverObjects actionInput) {
// perform an action. (not used)
return null;
}
public String toString() {
// it is possible to use this method in the cgi pages.
// actually it is used there for testing purpose
return "PROPS: " + super.toString() + "; QUEUE: " + sbQueue.toString();
}
// method for index deletion
public int removeAllUrlReferences(URL url, boolean fetchOnline) {
return removeAllUrlReferences(plasmaURL.urlHash(url), fetchOnline);
}
public int removeAllUrlReferences(String urlhash, boolean fetchOnline) {
// find all the words in a specific resource and remove the url reference from every word index
// finally, delete the url entry
// determine the url string
try {
plasmaCrawlLURL.Entry entry = urlPool.loadedURL.getEntry(urlhash, null);
URL url = entry.url();
if (url == null)
return 0;
// get set of words
// Set words = plasmaCondenser.getWords(getText(getResource(url,
// fetchOnline)));
Iterator witer = plasmaCondenser.getWords(snippetCache.parseDocument(url, snippetCache.getResource(url, fetchOnline, 10000)).getText());
// delete all word references
int count = removeReferences(urlhash, witer);
// finally delete the url entry itself
urlPool.loadedURL.remove(urlhash);
return count;
} catch (IOException e) {
return 0;
}
}
public int removeReferences(URL url, Set words) {
return removeReferences(plasmaURL.urlHash(url), words);
}
public int removeReferences(final String urlhash, final Set words) {
// sequentially delete all word references
// returns number of deletions
Iterator iter = words.iterator();
String word;
final String[] urlEntries = new String[] {urlhash};
int count = 0;
while (iter.hasNext()) {
word = (String) iter.next();
// delete the URL reference in this word index
count += wordIndex.removeEntries(plasmaWordIndexEntry.word2hash(word), urlEntries, true);
}
return count;
}
public int removeReferences(final String urlhash, final Iterator wordStatPropIterator) {
// sequentially delete all word references
// returns number of deletions
Map.Entry entry;
String word;
final String[] urlEntries = new String[] {urlhash};
int count = 0;
while (wordStatPropIterator.hasNext()) {
entry = (Map.Entry) wordStatPropIterator.next();
word = (String) entry.getKey();
// delete the URL reference in this word index
count += wordIndex.removeEntries(plasmaWordIndexEntry.word2hash(word), urlEntries, true);
}
return count;
}
public int adminAuthenticated(httpHeader header) {
String adminAccountBase64MD5 = getConfig("adminAccountBase64MD5", "");
if (adminAccountBase64MD5.length() == 0) return 2; // no passwrd stored
String authorization = ((String) header.get(httpHeader.AUTHORIZATION, "xxxxxx")).trim().substring(6);
if (authorization.length() == 0) return 1; // no authentication information given
if ((((String) header.get("CLIENTIP", "")).equals("localhost")) && (adminAccountBase64MD5.equals(authorization))) return 3; // soft-authenticated for localhost
if (adminAccountBase64MD5.equals(serverCodings.encodeMD5Hex(authorization))) return 4; // hard-authenticated, all ok
if (userDB.hasAdminRight((String)header.get(httpHeader.AUTHORIZATION, "xxxxxx"))) return 4;
return 0; // wrong password
}
public boolean verifyAuthentication(httpHeader header, boolean strict) {
// handle access rights
switch (adminAuthenticated(header)) {
case 0: // wrong password given
try { Thread.sleep(3000); } catch (InterruptedException e) { } // prevent brute-force
return false;
case 1: // no password given
return false;
case 2: // no password stored
return !strict;
case 3: // soft-authenticated for localhost only
return true;
case 4: // hard-authenticated, all ok
return true;
}
return false;
}
public void startTransferWholeIndex(yacySeed seed, boolean delete) {
if (transferIdxThread == null) {
this.transferIdxThread = new plasmaDHTFlush(this.log, this.wordIndex, seed, delete,
"true".equalsIgnoreCase(getConfig("indexTransfer.gzipBody","false")),
(int) getConfigLong("indexTransfer.timeout",60000));
this.transferIdxThread.start();
}
}
public void stopTransferWholeIndex(boolean wait) {
if ((transferIdxThread != null) && (transferIdxThread.isAlive()) && (!transferIdxThread.isFinished())) {
try {
this.transferIdxThread.stopIt(wait);
} catch (InterruptedException e) { }
}
}
public void abortTransferWholeIndex(boolean wait) {
if (transferIdxThread != null) {
if (!transferIdxThread.isFinished())
try {
this.transferIdxThread.stopIt(wait);
} catch (InterruptedException e) { }
transferIdxThread = null;
}
}
public String dhtShallTransfer() {
if (yacyCore.seedDB == null) {
return "no DHT distribution: seedDB == null";
}
if (yacyCore.seedDB.mySeed == null) {
return "no DHT distribution: mySeed == null";
}
if (yacyCore.seedDB.mySeed.isVirgin()) {
return "no DHT distribution: status is virgin";
}
if (getConfig("allowDistributeIndex","false").equalsIgnoreCase("false")) {
return "no DHT distribution: not enabled";
}
if (urlPool.loadedURL.size() < 10) {
return "no DHT distribution: loadedURL.size() = " + urlPool.loadedURL.size();
}
if (wordIndex.size() < 100) {
return "no DHT distribution: not enough words - wordIndex.size() = " + wordIndex.size();
}
if ((getConfig("allowDistributeIndexWhileCrawling","false").equalsIgnoreCase("false")) && (urlPool.noticeURL.stackSize() > 0)) {
return "no DHT distribution: crawl in progress - noticeURL.stackSize() = " + urlPool.noticeURL.stackSize();
}
return null;
}
public boolean dhtTransferJob() {
String rejectReason = dhtShallTransfer();
if (rejectReason != null) {
log.logFine(rejectReason);
return false;
}
if (this.dhtTransferChunk == null) {
log.logFine("no DHT distribution: no transfer chunk defined");
return false;
}
if ((this.dhtTransferChunk != null) && (this.dhtTransferChunk.getStatus() != plasmaDHTChunk.chunkStatus_FILLED)) {
log.logFine("no DHT distribution: index distribution is in progress, status=" + this.dhtTransferChunk.getStatus());
return false;
}
// do the transfer
int peerCount = (yacyCore.seedDB.mySeed.isJunior()) ? 1 : 3;
long starttime = System.currentTimeMillis();
boolean ok = dhtTransferProcess(dhtTransferChunk, peerCount);
if (ok) {
dhtTransferChunk.setStatus(plasmaDHTChunk.chunkStatus_COMPLETE);
log.logFine("DHT distribution: transfer COMPLETE");
// adopt transfer count
if ((System.currentTimeMillis() - starttime) > (10000 * peerCount)) {
dhtTransferIndexCount--;
} else {
if (dhtTransferChunk.indexCount() >= dhtTransferIndexCount) dhtTransferIndexCount++;
}
if (dhtTransferIndexCount < dhtTransferIndexMinimum) dhtTransferIndexCount = dhtTransferIndexMinimum;
// show success
return true;
} else {
dhtTransferChunk.setStatus(plasmaDHTChunk.chunkStatus_FAILED);
log.logFine("DHT distribution: transfer FAILED");
return false;
}
}
public boolean dhtTransferProcess(plasmaDHTChunk dhtChunk, int peerCount) {
if ((yacyCore.seedDB == null) || (yacyCore.seedDB.sizeConnected() == 0)) return false;
// find a list of DHT-peers
yacySeed[] seeds = yacyCore.dhtAgent.getDHTTargets(log, peerCount, 10, dhtChunk.firstContainer().wordHash(), dhtChunk.lastContainer().wordHash(), 0.4);
if (seeds.length < peerCount) {
log.logWarning("found not enough (" + seeds.length + ") peers for distribution");
return false;
}
// send away the indexes to all these peers
String peerNames = "";
int hc1 = 0;
plasmaDHTTransfer.setSeedcount(0);
plasmaDHTTransfer [] transfer = new plasmaDHTTransfer[peerCount];
for (int i = 0; i < transfer.length; i++) {
transfer[i] = new plasmaDHTTransfer(log, seeds, dhtChunk,
getConfig("indexDistribution.gzipBody","false").equalsIgnoreCase("true"),
(int)getConfigLong("indexDistribution.timeout",60000), 0);
transfer[i].start();
}
boolean DHTalive = true;
while(DHTalive) {
DHTalive = false;
try {
Thread.sleep(100);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
for (int i = 0; i < transfer.length; i++) {
if (transfer[i].isAlive()) DHTalive = true;
}
}
for (int i = 0; i < transfer.length; i++) {
if (transfer[i].getStatus() == plasmaDHTChunk.chunkStatus_COMPLETE) {
peerNames += ", " + seeds[i].getName();
hc1++;
}
}
if (peerNames.length() > 0) peerNames = peerNames.substring(2); // remove comma
// clean up and finish with deletion of indexes
if (hc1 >= peerCount) {
// success
return true;
}
this.log.logSevere("Index distribution failed. Too few peers (" + hc1 + ") received the index, not deleted locally.");
return false;
}
public void terminate() {
this.terminate = true;
this.shutdownSync.V();
}
public boolean isTerminated() {
return this.terminate;
}
public boolean waitForShutdown() throws InterruptedException {
this.shutdownSync.P();
return this.terminate;
}
}
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