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yacy_search_server
mirror of https://github.com/yacy/yacy_search_server
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*) Trying to speedup local crawling

Browse Source 
- introduction of a threadpool for crawling
- introduction of a job queue to avoid buzy waiting for a free crawler slot

*) New classes added
- queue for receiving of crawler jobs
- semaphore class to do reader/writer synchronization (mutual exclusion)
- message object to hold all needed data about a crawler job

*) Trying to solve session-thread shutdown problem
- session thread stopped variable is now set from outside before interrupting the
  session thread.

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@39 6c8d7289-2bf4-0310-a012-ef5d649a1542
pull/1/head
theli 20 years ago
parent 4e429ae243
commit c9c0a1f11c
8 changed files with 839 additions and 206 deletions
Show Stats Download Patch File Download Diff File

36
htroot/IndexCreate_p.java
Unescape View File

@ -319,16 +319,36 @@ public class IndexCreate_p {
} else {
prop.put("loader-set", 1);
prop.put("loader-set_num", loaderThreadsSize);
dark = true;
plasmaCrawlLoader.Exec[] loaderThreads = switchboard.cacheLoader.threadStatus();
for (i = 0; i < loaderThreads.length; i++) {
initiator = yacyCore.seedDB.getConnected(loaderThreads[i].initiator);
dark = true;
//plasmaCrawlLoader.Exec[] loaderThreads = switchboard.cacheLoader.threadStatus();
// for (i = 0; i < loaderThreads.length; i++) {
// initiator = yacyCore.seedDB.getConnected(loaderThreads[i].initiator);
// prop.put("loader-set_list_"+i+"_dark", ((dark) ? 1 : 0) );
// prop.put("loader-set_list_"+i+"_initiator", ((initiator == null) ? "proxy" : initiator.getName()) );
// prop.put("loader-set_list_"+i+"_depth", loaderThreads[i].depth );
// prop.put("loader-set_list_"+i+"_url", loaderThreads[i].url ); // null pointer exception here !!! maybe url = null; check reason.
// dark = !dark;
// }
// prop.put("loader-set_list", i );
ThreadGroup loaderThreads = switchboard.cacheLoader.threadStatus();
int threadCount = loaderThreads.activeCount();
Thread[] threadList = new Thread[threadCount*2];
threadCount = loaderThreads.enumerate(threadList);
for (i = 0; i < threadCount; i++) {
plasmaCrawlWorker theWorker = (plasmaCrawlWorker)threadList[i];
plasmaCrawlLoaderMessage theMsg = theWorker.theMsg;
if (theMsg == null) continue;
initiator = yacyCore.seedDB.getConnected(theMsg.initiator);
prop.put("loader-set_list_"+i+"_dark", ((dark) ? 1 : 0) );
prop.put("loader-set_list_"+i+"_initiator", ((initiator == null) ? "proxy" : initiator.getName()) );
prop.put("loader-set_list_"+i+"_depth", loaderThreads[i].depth );
prop.put("loader-set_list_"+i+"_url", loaderThreads[i].url ); // null pointer exception here !!! maybe url = null; check reason.
dark = !dark;
}
prop.put("loader-set_list_"+i+"_depth", theMsg.depth );
prop.put("loader-set_list_"+i+"_url", theMsg.url ); // null pointer exception here !!! maybe url = null; check reason.
dark = !dark;
}
prop.put("loader-set_list", i );
}

20
source/de/anomic/http/httpc.java
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@ -166,17 +166,20 @@ public final class httpc {
public static httpc getInstance(String server, int port, int timeout, boolean ssl) throws IOException {
httpc newHttpc = null;
try {
// fetching a new httpc from the object pool
httpc newHttpc = (httpc) httpc.theHttpcPool.borrowObject();
// initialize it
newHttpc.init(server,port,timeout,ssl);
return newHttpc;
newHttpc = (httpc) httpc.theHttpcPool.borrowObject();
} catch (Exception e) {
throw new IOException("Unable to initialize a new httpc. " + e.getMessage());
}
}
// initialize it
newHttpc.init(server,port,timeout,ssl);
return newHttpc;
}
public static void returnInstance(httpc theHttpc) {
@ -320,7 +323,7 @@ public final class httpc {
userAgent = "yacy (www.yacy.net; v" + vDATE + "; " + systemOST + ")";
}
public class response {
public final class response {
// Response-Header = Date | Pragma | Allow | Content-Encoding | Content-Length | Content-Type |
// Expires | Last-Modified | HTTP-header
/*
@ -438,7 +441,8 @@ public final class httpc {
}
public byte[] writeContent(OutputStream procOS) throws IOException {
serverByteBuffer sbb = new serverByteBuffer();
int contentLength = (int) this.responseHeader.contentLength();
serverByteBuffer sbb = new serverByteBuffer((contentLength==-1)?8192:contentLength);
writeContentX(procOS, sbb, httpc.this.clientInput);
return sbb.getBytes();
}

2
source/de/anomic/http/httpd.java
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@ -647,7 +647,7 @@ public final class httpd implements serverHandler {
// we replace all "+" by spaces
// and resolve %-escapes with two-digit hex attributes
int pos = 0;
StringBuffer result = new StringBuffer();
StringBuffer result = new StringBuffer(s.length());
while (pos < s.length()) {
if (s.charAt(pos) == '+') {
result.append(" ");

2
source/de/anomic/http/httpdProxyHandler.java
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@ -910,7 +910,7 @@ public final class httpdProxyHandler extends httpdAbstractHandler implements htt
if (!(header.containsKey("date"))) header.put("Date", httpc.dateString(httpc.nowDate()));
if (!(header.containsKey("content-type"))) header.put("Content-type", "text/html"); // fix this
StringBuffer headerStringBuffer = new StringBuffer();
StringBuffer headerStringBuffer = new StringBuffer(200);
// write status line
headerStringBuffer.append("HTTP/1.1 ")

589
source/de/anomic/plasma/plasmaCrawlLoader.java
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@ -44,218 +44,445 @@ package de.anomic.plasma;
import java.io.*;
import java.util.*;
import java.net.*;
import org.apache.commons.pool.impl.GenericObjectPool;
import de.anomic.net.*;
import de.anomic.http.*;
import de.anomic.server.*;
import de.anomic.tools.*;
import de.anomic.htmlFilter.*;
public final class plasmaCrawlLoader {
public final class plasmaCrawlLoader extends Thread {
private plasmaHTCache cacheManager;
private int socketTimeout;
private int loadTimeout;
private boolean remoteProxyUse;
private String remoteProxyHost;
private int remoteProxyPort;
private int maxSlots;
private List slots;
private serverLog log;
private HashSet acceptMimeTypes;
private final plasmaHTCache cacheManager;
private final int socketTimeout;
private final int loadTimeout;
private final int maxSlots;
private final serverLog log;
private final CrawlerMessageQueue theQueue;
private final CrawlerPool crawlwerPool;
private final ThreadGroup theThreadGroup = new ThreadGroup("CrawlerThreads");
private boolean stopped = false;
public plasmaCrawlLoader(
plasmaHTCache cacheManager,
serverLog log,
int socketTimeout,
int loadTimeout,
int mslots,
boolean proxyUse,
String proxyHost,
int proxyPort,
HashSet acceptMimeTypes) {
this.setName("plasmaCrawlLoader");
this.cacheManager = cacheManager;
this.log = log;
this.socketTimeout = socketTimeout;
this.loadTimeout = loadTimeout;
this.maxSlots = mslots;
// configuring the crawler messagequeue
this.theQueue = new CrawlerMessageQueue();
// configuring the crawler thread pool
// implementation of session thread pool
GenericObjectPool.Config config = new GenericObjectPool.Config();
// The maximum number of active connections that can be allocated from pool at the same time,
// 0 for no limit
config.maxActive = this.maxSlots;
// The maximum number of idle connections connections in the pool
// 0 = no limit.
config.maxIdle = this.maxSlots / 2;
config.minIdle = this.maxSlots / 4;
// block undefinitely
config.maxWait = -1;
// Action to take in case of an exhausted DBCP statement pool
// 0 = fail, 1 = block, 2= grow
config.whenExhaustedAction = GenericObjectPool.WHEN_EXHAUSTED_BLOCK;
config.minEvictableIdleTimeMillis = 30000;
// config.testOnReturn = true;
CrawlerFactory theFactory = new CrawlerFactory(
this.theThreadGroup,
cacheManager,
socketTimeout,
proxyUse,
proxyHost,
proxyPort,
acceptMimeTypes,
log);
this.crawlwerPool = new CrawlerPool(theFactory,config,this.theThreadGroup);
// start the crawl loader
this.start();
}
public plasmaCrawlLoader(plasmaHTCache cacheManager, serverLog log, int socketTimeout, int loadTimeout, int mslots, boolean proxyUse, String proxyHost, int proxyPort,
HashSet acceptMimeTypes) {
this.cacheManager = cacheManager;
this.log = log;
this.socketTimeout = socketTimeout;
this.loadTimeout = loadTimeout;
this.remoteProxyUse = proxyUse;
this.remoteProxyHost = proxyHost;
this.remoteProxyPort = proxyPort;
this.maxSlots = mslots;
this.slots = new LinkedList();
this.acceptMimeTypes = acceptMimeTypes;
public ThreadGroup threadStatus() {
return this.theThreadGroup;
}
public void run() {
while (!this.stopped && !Thread.interrupted()) {
try {
// getting a new message from the crawler queue
plasmaCrawlLoaderMessage theMsg = this.theQueue.waitForMessage();
// getting a new crawler from the crawler pool
plasmaCrawlWorker theWorker = (plasmaCrawlWorker) this.crawlwerPool.borrowObject();
theWorker.execute(theMsg);
} catch (InterruptedException e) {
Thread.interrupted();
this.stopped = true;
}
catch (Exception e) {
e.printStackTrace();
}
}
// consuming the is interrupted flag
this.isInterrupted();
// closing the pool
try {
this.crawlwerPool.close();
}
catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public void loadParallel(
URL url,
String referer,
String initiator,
int depth,
plasmaCrawlProfile.entry profile) {
private void killTimeouts() {
Exec thread;
for (int i = slots.size() - 1; i >= 0; i--) {
// check if thread is alive
thread = (Exec) slots.get(i);
if (thread.isAlive()) {
// check the age of the thread
if (System.currentTimeMillis() - thread.startdate > loadTimeout) {
// we kill that thread
thread.interrupt(); // hopefully this wakes him up.
slots.remove(i);
log.logDebug("IGNORING SLEEPING DOWNLOAD SLOT " + thread.url.toString());
}
} else {
// thread i is dead, remove it
slots.remove(i);
if (!this.crawlwerPool.isClosed) {
int crawlingPriority = 5;
// creating a new crawler queue object
plasmaCrawlLoaderMessage theMsg = new plasmaCrawlLoaderMessage(url, referer,initiator,depth,profile, crawlingPriority);
// adding the message to the queue
try {
this.theQueue.addMessage(theMsg);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
public int size() {
return crawlwerPool.getNumActive();
}
}
final class Semaphore {
private long currentValue = 0;
private long maximumValue = Long.MAX_VALUE;
public synchronized void loadParallel(URL url, String referer, String initiator, int depth, plasmaCrawlProfile.entry profile) {
protected Semaphore() {
this(0,Long.MAX_VALUE);
}
public Semaphore(long initialValue) {
this(initialValue,Long.MAX_VALUE);
}
// wait until there is space in the download slots
Exec thread;
while (slots.size() >= maxSlots) {
killTimeouts();
protected Semaphore(long initialValue, long maxValue) {
/* some errorhandling */
if (maxValue < initialValue) {
throw new IllegalArgumentException("The semaphore maximum value must not be " +
"greater than the semaphore init value.");
}
if (maxValue < 1) {
throw new IllegalArgumentException("The semaphore maximum value must be greater or equal 1.");
}
if (initialValue < 0) {
throw new IllegalArgumentException("The semaphore initial value must be greater or equal 0.");
}
// setting the initial Sempahore Values
this.currentValue = initialValue;
this.maximumValue = maxValue;
}
public synchronized void P() throws InterruptedException
{
this.currentValue-- ;
if (this.currentValue < 0) {
try {
wait();
} catch(InterruptedException e) {
this.currentValue++;
throw e;
}
}
}
// wait a while
try {
Thread.currentThread().sleep(1000);
} catch (InterruptedException e) {
break;
}
}
public synchronized void V() {
if (this.currentValue+1 == this.maximumValue) {
throw new IndexOutOfBoundsException("The maximum value of the semaphore was reached");
}
this.currentValue++;
if (this.currentValue <= 0) {
notify();
}
}
}
// we found space in the download slots
thread = new Exec(url, referer, initiator, depth, profile);
thread.start();
slots.add(thread);
class CrawlerMessageQueue {
private final Semaphore readSync;
private final Semaphore writeSync;
private final ArrayList messageList;
public CrawlerMessageQueue() {
this.readSync = new Semaphore (0);
this.writeSync = new Semaphore (1);
this.messageList = new ArrayList(10);
}
/**
*
* @param newMessage
* @throws MessageQueueLockedException
* @throws InterruptedException
*/
public void addMessage(plasmaCrawlLoaderMessage newMessage)
throws InterruptedException, NullPointerException
{
if (newMessage == null) throw new NullPointerException();
this.writeSync.P();
boolean insertionDoneSuccessfully = false;
synchronized(this.messageList) {
insertionDoneSuccessfully = this.messageList.add(newMessage);
}
if (insertionDoneSuccessfully) {
this.sortMessages();
this.readSync.V();
}
this.writeSync.V();
}
public plasmaCrawlLoaderMessage waitForMessage() throws InterruptedException {
this.readSync.P();
this.writeSync.P();
plasmaCrawlLoaderMessage newMessage = null;
synchronized(this.messageList) {
newMessage = (plasmaCrawlLoaderMessage) this.messageList.remove(0);
}
public int size() {
killTimeouts();
return slots.size();
this.writeSync.V();
return newMessage;
}
public Exec[] threadStatus() {
killTimeouts();
Exec[] result = new Exec[slots.size()];
for (int i = 0; i < slots.size(); i++) result[i] = (Exec) slots.get(i);
return result;
protected void sortMessages() {
Collections.sort(this.messageList, new Comparator() {
public int compare(Object o1, Object o2)
{
plasmaCrawlLoaderMessage message1 = (plasmaCrawlLoaderMessage) o1;
plasmaCrawlLoaderMessage message2 = (plasmaCrawlLoaderMessage) o2;
int message1Priority = message1.crawlingPriority;
int message2Priority = message2.crawlingPriority;
if (message1Priority > message2Priority){
return -1;
} else if (message1Priority < message2Priority) {
return 1;
} else {
return 0;
}
}
});
}
}
final class CrawlerPool extends GenericObjectPool
{
private final ThreadGroup theThreadGroup;
public boolean isClosed = false;
public final class Exec extends Thread {
public CrawlerPool(CrawlerFactory objFactory,
GenericObjectPool.Config config,
ThreadGroup threadGroup) {
super(objFactory, config);
this.theThreadGroup = threadGroup;
objFactory.setPool(this);
}
public Object borrowObject() throws Exception {
return super.borrowObject();
}
public URL url;
public String referer;
public String initiator;
public int depth;
public long startdate;
public plasmaCrawlProfile.entry profile;
public String error;
public void returnObject(Object obj) throws Exception {
super.returnObject(obj);
}
public synchronized void close() throws Exception {
/*
* shutdown all still running session threads ...
*/
// interrupting all still running or pooled threads ...
this.theThreadGroup.interrupt();
/* waiting for all threads to finish */
int threadCount = this.theThreadGroup.activeCount();
Thread[] threadList = new Thread[threadCount];
threadCount = this.theThreadGroup.enumerate(threadList);
public Exec(URL url, String referer, String initiator, int depth, plasmaCrawlProfile.entry profile) {
this.url = url; // the url to crawl
this.referer = referer; // the url that contained this url as link
this.initiator = initiator;
this.depth = depth; // distance from start-url
this.startdate = System.currentTimeMillis();
this.profile = profile;
this.error = null;
try {
for ( int currentThreadIdx = 0; currentThreadIdx < threadCount; currentThreadIdx++ ) {
((plasmaCrawlWorker)threadList[currentThreadIdx]).setStopped(true);
}
for ( int currentThreadIdx = 0; currentThreadIdx < threadCount; currentThreadIdx++ ) {
// we need to use a timeout here because of missing interruptable session threads ...
if (threadList[currentThreadIdx].isAlive()) threadList[currentThreadIdx].join(500);
}
}
catch (InterruptedException e) {
System.err.println("Interruption while trying to shutdown all crawler threads.");
}
public void run() {
try {
load(url, referer, initiator, depth, profile);
} catch (IOException e) {
}
}
this.isClosed = true;
super.close();
}
}
private httpc newhttpc(String server, int port, boolean ssl) throws IOException {
// a new httpc connection, combined with possible remote proxy
if (remoteProxyUse)
return httpc.getInstance(server, port, socketTimeout, ssl, remoteProxyHost, remoteProxyPort);
else return httpc.getInstance(server, port, socketTimeout, ssl);
}
final class CrawlerFactory implements org.apache.commons.pool.PoolableObjectFactory {
private void load(URL url, String referer, String initiator, int depth, plasmaCrawlProfile.entry profile) throws IOException {
if (url == null) return;
Date requestDate = new Date(); // remember the time...
String host = url.getHost();
String path = url.getPath();
int port = url.getPort();
boolean ssl = url.getProtocol().equals("https");
if (port < 0) port = (ssl) ? 443 : 80;
// set referrer; in some case advertise a little bit:
referer = referer.trim();
if (referer.length() == 0) referer = "http://www.yacy.net/yacy/";
// take a file from the net
httpc remote = null;
try {
// create a request header
httpHeader requestHeader = new httpHeader();
requestHeader.put("User-Agent", httpdProxyHandler.userAgent);
requestHeader.put("Referer", referer);
requestHeader.put("Accept-Encoding", "gzip,deflate");
private CrawlerPool thePool;
private final ThreadGroup theThreadGroup;
private final plasmaHTCache cacheManager;
private final int socketTimeout;
private final boolean remoteProxyUse;
private final String remoteProxyHost;
private final int remoteProxyPort;
private final HashSet acceptMimeTypes;
private final serverLog theLog;
//System.out.println("CRAWLER_REQUEST_HEADER=" + requestHeader.toString()); // DEBUG
// open the connection
remote = newhttpc(host, port, ssl);
// send request
httpc.response res = remote.GET(path, requestHeader);
if (res.status.startsWith("200")) {
// the transfer is ok
long contentLength = res.responseHeader.contentLength();
// reserve cache entry
plasmaHTCache.Entry htCache = cacheManager.newEntry(requestDate, depth, url, requestHeader, res.status, res.responseHeader, initiator, profile);
// request has been placed and result has been returned. work off response
File cacheFile = cacheManager.getCachePath(url);
try {
if (!(httpd.isTextMime(res.responseHeader.mime().toLowerCase(), acceptMimeTypes))) {
// if the response has not the right file type then reject file
remote.close();
log.logInfo("REJECTED WRONG MIME TYPE " + res.responseHeader.mime() + " for url " + url.toString());
htCache.status = plasmaHTCache.CACHE_UNFILLED;
} else if ((profile.storeHTCache()) && ((error = htCache.shallStoreCache()) == null)) {
// we write the new cache entry to file system directly
cacheFile.getParentFile().mkdirs();
FileOutputStream fos = new FileOutputStream(cacheFile);
htCache.cacheArray = res.writeContent(fos); // writes in cacheArray and cache file
fos.close();
htCache.status = plasmaHTCache.CACHE_FILL;
} else {
if (error != null) log.logDebug("CRAWLER NOT STORED RESOURCE " + url.toString() + ": " + error);
// anyway, the content still lives in the content scraper
htCache.cacheArray = res.writeContent(null); // writes only into cacheArray
htCache.status = plasmaHTCache.CACHE_PASSING;
}
// enQueue new entry with response header
if ((initiator == null) || (initiator.length() == 0)) {
// enqueued for proxy writings
cacheManager.stackProcess(htCache);
} else {
// direct processing for crawling
cacheManager.process(htCache);
}
} catch (SocketException e) {
// this may happen if the client suddenly closes its connection
// maybe the user has stopped loading
// in that case, we are not responsible and just forget it
// but we clean the cache also, since it may be only partial
// and most possible corrupted
if (cacheFile.exists()) cacheFile.delete();
log.logError("CRAWLER LOADER ERROR1: with url=" + url.toString() + ": " + e.toString());
}
} else {
// if the response has not the right response type then reject file
log.logInfo("REJECTED WRONG STATUS TYPE '" + res.status + "' for url " + url.toString());
// not processed any further
}
remote.close();
} catch (Exception e) {
// this may happen if the targeted host does not exist or anything with the
// remote server was wrong.
log.logError("CRAWLER LOADER ERROR2 with url=" + url.toString() + ": " + e.toString());
e.printStackTrace();
} finally {
if (remote != null) httpc.returnInstance(remote);
}
public CrawlerFactory(
ThreadGroup theThreadGroup,
plasmaHTCache cacheManager,
int socketTimeout,
boolean remoteProxyUse,
String remoteProxyHost,
int remoteProxyPort,
HashSet acceptMimeTypes,
serverLog theLog) {
super();
if (theThreadGroup == null)
throw new IllegalArgumentException("The threadgroup object must not be null.");
this.theThreadGroup = theThreadGroup;
this.cacheManager = cacheManager;
this.socketTimeout = socketTimeout;
this.remoteProxyUse = remoteProxyUse;
this.remoteProxyHost = remoteProxyHost;
this.remoteProxyPort = remoteProxyPort;
this.acceptMimeTypes = acceptMimeTypes;
this.theLog = theLog;
}
public void setPool(CrawlerPool thePool) {
this.thePool = thePool;
}
/**
* @see org.apache.commons.pool.PoolableObjectFactory#makeObject()
*/
public Object makeObject() {
return new plasmaCrawlWorker(
this.theThreadGroup,
this.thePool,
this.cacheManager,
this.socketTimeout,
this.remoteProxyUse,
this.remoteProxyHost,
this.remoteProxyPort,
this.acceptMimeTypes,
this.theLog);
}
/**
* @see org.apache.commons.pool.PoolableObjectFactory#destroyObject(java.lang.Object)
*/
public void destroyObject(Object obj) {
if (obj instanceof plasmaCrawlWorker) {
plasmaCrawlWorker theWorker = (plasmaCrawlWorker) obj;
theWorker.setStopped(true);
}
}
/**
* @see org.apache.commons.pool.PoolableObjectFactory#validateObject(java.lang.Object)
*/
public boolean validateObject(Object obj) {
if (obj instanceof plasmaCrawlWorker)
{
plasmaCrawlWorker theWorker = (plasmaCrawlWorker) obj;
if (!theWorker.isAlive() || theWorker.isInterrupted()) return false;
if (theWorker.isRunning()) return true;
return false;
}
return true;
}
/**
* @param obj
*
*/
public void activateObject(Object obj) {
//log.debug(" activateObject...");
}
/**
* @param obj
*
*/
public void passivateObject(Object obj) {
//log.debug(" passivateObject..." + obj);
if (obj instanceof plasmaCrawlWorker) {
plasmaCrawlWorker theWorker = (plasmaCrawlWorker) obj;
}
}
}

70
source/de/anomic/plasma/plasmaCrawlLoaderMessage.java
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@ -0,0 +1,70 @@
//plasmaCrawlLoaderMessage.java
//------------------------
//part of YaCy
//(C) by Michael Peter Christen; mc@anomic.de
//first published on http://www.anomic.de
//Frankfurt, Germany, 2004
//last major change: 21.04.2005 by Martin Thelian
//
//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.
package de.anomic.plasma;
import java.net.URL;
public final class plasmaCrawlLoaderMessage {
public final int crawlingPriority;
public final URL url;
public final String referer;
public final String initiator;
public final int depth;
public final plasmaCrawlProfile.entry profile;
// loadParallel(URL url, String referer, String initiator, int depth, plasmaCrawlProfile.entry profile) {
public plasmaCrawlLoaderMessage(
URL url,
String referer,
String initiator,
int depth,
plasmaCrawlProfile.entry profile,
int crawlingPriority) {
this.url = url;
this.referer = referer;
this.initiator = initiator;
this.depth = depth;
this.profile = profile;
this.crawlingPriority = crawlingPriority;
}
}

306
source/de/anomic/plasma/plasmaCrawlWorker.java
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@ -0,0 +1,306 @@
//plasmaCrawlWorker.java
//------------------------
//part of YaCy
//(C) by Michael Peter Christen; mc@anomic.de
//first published on http://www.anomic.de
//Frankfurt, Germany, 2004
//last major change: 21.04.2005 by Martin Thelian
//
//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.
package de.anomic.plasma;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.net.SocketException;
import java.net.URL;
import java.util.Date;
import java.util.HashSet;
import de.anomic.http.httpHeader;
import de.anomic.http.httpc;
import de.anomic.http.httpd;
import de.anomic.http.httpdProxyHandler;
import de.anomic.server.serverLog;
public final class plasmaCrawlWorker extends Thread {
private static final String threadBaseName = "CrawlerWorker";
private final CrawlerPool myPool;
private final plasmaHTCache cacheManager;
private final int socketTimeout;
private final boolean remoteProxyUse;
private final String remoteProxyHost;
private final int remoteProxyPort;
private final HashSet acceptMimeTypes;
private final serverLog log;
public plasmaCrawlLoaderMessage theMsg;
private URL url;
private String referer;
private String initiator;
private int depth;
private long startdate;
private plasmaCrawlProfile.entry profile;
private String error;
private boolean running = false;
private boolean stopped = false;
private boolean done = false;
public plasmaCrawlWorker(
ThreadGroup theTG,
CrawlerPool thePool,
plasmaHTCache cacheManager,
int socketTimeout,
boolean remoteProxyUse,
String remoteProxyHost,
int remoteProxyPort,
HashSet acceptMimeTypes,
serverLog log) {
super(theTG,threadBaseName + "_inPool");
this.myPool = thePool;
this.cacheManager = cacheManager;
this.socketTimeout = socketTimeout;
this.remoteProxyUse = remoteProxyUse;
this.remoteProxyHost = remoteProxyHost;
this.remoteProxyPort = remoteProxyPort;
this.acceptMimeTypes = acceptMimeTypes;
this.log = log;
}
public synchronized void execute(plasmaCrawlLoaderMessage theMsg) {
this.theMsg = theMsg;
this.url = theMsg.url;
this.referer = theMsg.referer;
this.initiator = theMsg.initiator;
this.depth = theMsg.depth;
this.profile = theMsg.profile;
this.startdate = System.currentTimeMillis();
this.error = null;
this.done = false;
if (!this.running) {
// this.setDaemon(true);
this.start();
} else {
this.notifyAll();
}
}
public void reset() {
this.url = null;
this.referer = null;
this.initiator = null;
this.depth = 0;
this.startdate = 0;
this.profile = null;
this.error = null;
}
public void run() {
this.running = true;
// The thread keeps running.
while (!this.stopped && !Thread.interrupted()) {
if (this.done) {
// We are waiting for a task now.
synchronized (this) {
try {
this.wait(); //Wait until we get a request to process.
}
catch (InterruptedException e) {
this.stopped = true;
// log.error("", e);
}
}
}
else
{
//There is a task....let us execute it.
try {
execute();
} catch (Exception e) {
// log.error("", e);
}
finally {
reset();
if (!this.stopped && !this.isInterrupted()) {
try {
this.myPool.returnObject(this);
this.setName(this.threadBaseName + "_inPool");
}
catch (Exception e1) {
e1.printStackTrace();
}
}
}
}
}
}
public void execute() throws IOException {
try {
this.setName(this.threadBaseName + "_" + this.url);
load(this.url, this.referer, this.initiator, this.depth, this.profile);
} catch (IOException e) {
throw e;
}
finally {
this.done = true;
}
}
private httpc newhttpc(String server, int port, boolean ssl) throws IOException {
// a new httpc connection, combined with possible remote proxy
if (remoteProxyUse)
return httpc.getInstance(server, port, socketTimeout, ssl, remoteProxyHost, remoteProxyPort);
else return httpc.getInstance(server, port, socketTimeout, ssl);
}
private void load(
URL url,
String referer,
String initiator,
int depth,
plasmaCrawlProfile.entry profile
) throws IOException {
if (url == null) return;
Date requestDate = new Date(); // remember the time...
String host = url.getHost();
String path = url.getPath();
int port = url.getPort();
boolean ssl = url.getProtocol().equals("https");
if (port < 0) port = (ssl) ? 443 : 80;
// set referrer; in some case advertise a little bit:
referer = referer.trim();
if (referer.length() == 0) referer = "http://www.yacy.net/yacy/";
// take a file from the net
httpc remote = null;
try {
// create a request header
httpHeader requestHeader = new httpHeader();
requestHeader.put("User-Agent", httpdProxyHandler.userAgent);
requestHeader.put("Referer", referer);
requestHeader.put("Accept-Encoding", "gzip,deflate");
//System.out.println("CRAWLER_REQUEST_HEADER=" + requestHeader.toString()); // DEBUG
// open the connection
remote = newhttpc(host, port, ssl);
// send request
httpc.response res = remote.GET(path, requestHeader);
if (res.status.startsWith("200")) {
// the transfer is ok
long contentLength = res.responseHeader.contentLength();
// reserve cache entry
plasmaHTCache.Entry htCache = cacheManager.newEntry(requestDate, depth, url, requestHeader, res.status, res.responseHeader, initiator, profile);
// request has been placed and result has been returned. work off response
File cacheFile = cacheManager.getCachePath(url);
try {
if (!(httpd.isTextMime(res.responseHeader.mime().toLowerCase(), acceptMimeTypes))) {
// if the response has not the right file type then reject file
remote.close();
log.logInfo("REJECTED WRONG MIME TYPE " + res.responseHeader.mime() + " for url " + url.toString());
htCache.status = plasmaHTCache.CACHE_UNFILLED;
} else if ((profile.storeHTCache()) && ((error = htCache.shallStoreCache()) == null)) {
// we write the new cache entry to file system directly
cacheFile.getParentFile().mkdirs();
FileOutputStream fos = new FileOutputStream(cacheFile);
htCache.cacheArray = res.writeContent(fos); // writes in cacheArray and cache file
fos.close();
htCache.status = plasmaHTCache.CACHE_FILL;
} else {
if (error != null) log.logDebug("CRAWLER NOT STORED RESOURCE " + url.toString() + ": " + error);
// anyway, the content still lives in the content scraper
htCache.cacheArray = res.writeContent(null); // writes only into cacheArray
htCache.status = plasmaHTCache.CACHE_PASSING;
}
// enQueue new entry with response header
if ((initiator == null) || (initiator.length() == 0)) {
// enqueued for proxy writings
cacheManager.stackProcess(htCache);
} else {
// direct processing for crawling
cacheManager.process(htCache);
}
} catch (SocketException e) {
// this may happen if the client suddenly closes its connection
// maybe the user has stopped loading
// in that case, we are not responsible and just forget it
// but we clean the cache also, since it may be only partial
// and most possible corrupted
if (cacheFile.exists()) cacheFile.delete();
log.logError("CRAWLER LOADER ERROR1: with url=" + url.toString() + ": " + e.toString());
}
} else {
// if the response has not the right response type then reject file
log.logInfo("REJECTED WRONG STATUS TYPE '" + res.status + "' for url " + url.toString());
// not processed any further
}
remote.close();
} catch (Exception e) {
// this may happen if the targeted host does not exist or anything with the
// remote server was wrong.
log.logError("CRAWLER LOADER ERROR2 with url=" + url.toString() + ": " + e.toString());
e.printStackTrace();
} finally {
if (remote != null) httpc.returnInstance(remote);
}
}
public void setStopped(boolean stopped) {
this.stopped = stopped;
}
public boolean isRunning() {
return this.running;
}
}

20
source/de/anomic/server/serverCore.java
Unescape View File

@ -395,19 +395,21 @@ public final class serverCore extends serverAbstractThread implements serverThre
threadCount = serverCore.this.theSessionThreadGroup.enumerate(threadList);
try {
for ( int currentThreadIdx = 0; currentThreadIdx < threadCount; currentThreadIdx++ ) {
((Session)threadList[currentThreadIdx]).setStopped(true);
}
for ( int currentThreadIdx = 0; currentThreadIdx < threadCount; currentThreadIdx++ ) {
// we need to use a timeout here because of missing interruptable session threads ...
threadList[currentThreadIdx].join(500);
if (threadList[currentThreadIdx].isAlive()) threadList[currentThreadIdx].join(500);
}
}
catch (InterruptedException e) {
serverCore.this.log.logWarning("Interruption while trying to shutdown all session threads.");
}
finally {
this.isClosed = true;
}
super.close();
this.isClosed = true;
super.close();
}
}
@ -626,10 +628,12 @@ public final class serverCore extends serverAbstractThread implements serverThre
if (!this.stopped && !this.isInterrupted()) {
try {
this.setName("Session_inPool");
serverCore.this.theSessionPool.returnObject(this);
}
catch (Exception e1) {
e1.printStackTrace();
// e1.printStackTrace();
this.stopped = true;
}
}
}
@ -637,7 +641,7 @@ public final class serverCore extends serverAbstractThread implements serverThre
}
}
private void execute() {
private void execute() throws InterruptedException {
try {
// setting the session startup time
@ -648,6 +652,7 @@ public final class serverCore extends serverAbstractThread implements serverThre
// getting some client information
this.userAddress = this.controlSocket.getInetAddress();
this.setName("Session_" + this.userAddress.getHostAddress() + ":" + this.controlSocket.getPort());
// TODO: check if we want to allow this socket to connect us
@ -669,6 +674,7 @@ public final class serverCore extends serverAbstractThread implements serverThre
listen();
} catch (Exception e) {
if (e instanceof InterruptedException) throw (InterruptedException) e;
System.err.println("ERROR: (internal) " + e);
} finally {
try {

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