/**
* it will invoke the worker to start working on the tasks - never returns
*/
public void run()
{
int requestNum = 0, timeoutCounter = 0;
bool needToTerminate = false;
TimeSpan totalProcessTime;
Thread.Sleep(10000);
while (needToTerminate == false)
{
DateTime startTime = DateTime.Now;
try
{
//System.Console.WriteLine("-<>--------------------------------------------------------------------------");
SyncAccessor.getSlot(2, 1);
Url task = SyncAccessor.getFromQueue <Url>(_tasks, _timer);
//System.Console.WriteLine(" Start Working on : " + task.getUrl() + " ...");
ResourceContent content = _fetchers.fetchResource(task.getUrl());
if (content.isValid() != true)
{
timeoutCounter++;
//System.Console.WriteLine(" Fetch Failed Ignoring ... ");
continue;
}
//System.Console.WriteLine(" Fetched Successfully ... ");
ResourceContent modifiedContent = new ResourceContent(content.getResourceUrl(), content.getResourceType()
, content.getResourceContent(), content.getReturnCode(), task.getRank());
DateTime startProcess = DateTime.Now;
_processors.processResource(modifiedContent);
DateTime endProcess = DateTime.Now;
totalProcessTime = endProcess - startProcess;
//System.Console.WriteLine(" URL Processed Successfully ... ");
System.Console.WriteLine(" URL Processed Successfully ... ");
}
catch (Exception e)
{
//System.Console.WriteLine("[Exception Happened] " + e);
RuntimeStatistics.addToErrors(1);
continue;
}
DateTime endTime = DateTime.Now;
TimeSpan totalRequestTime = endTime - startTime;
if (LogDebuggerControl.getInstance().enableTiming)
{
// write request time to timing log file
StreamWriter sw = new
StreamWriter("_DEBUG_INFO_TIMING@" + System.Threading.Thread.CurrentThread.ManagedThreadId + ".txt", true);
sw.WriteLine(" TIMING FOR REQ - " + requestNum++ + " takes about " + totalRequestTime.TotalSeconds + " s, Processed At " + totalProcessTime.TotalSeconds + " s");
sw.Close();
}
}
}
/**
* This is a test method that checks if the class resourceContent works fine
*/
public static void Test()
{
String rsrcurl = "www.adamsearch.com";
ResourceType rsrcType = ResourceType.HtmlResource;
String rsrcContent = "Please click the next buttom to start crawling !!";
int rtrnCode = 200;
ResourceContent htmlResource1 = new ResourceContent(rsrcurl, rsrcType, rsrcContent, rtrnCode,0);
Console.WriteLine("The resource is : " + htmlResource1.isValid());
Console.WriteLine("Get url: " + htmlResource1.getResourceUrl());
Console.WriteLine("Get resourceType: " + htmlResource1.getResourceType());
Console.WriteLine("Get resourceContent: " + htmlResource1.getResourceContent());
Console.WriteLine("to string:\n" + htmlResource1);
}
/**
* This is a test method that checks if the class resourceContent works fine
*/
public static void Test()
{
String rsrcurl = "www.adamsearch.com";
ResourceType rsrcType = ResourceType.HtmlResource;
String rsrcContent = "Please click the next buttom to start crawling !!";
int rtrnCode = 200;
ResourceContent htmlResource1 = new ResourceContent(rsrcurl, rsrcType, rsrcContent, rtrnCode, 0);
Console.WriteLine("The resource is : " + htmlResource1.isValid());
Console.WriteLine("Get url: " + htmlResource1.getResourceUrl());
Console.WriteLine("Get resourceType: " + htmlResource1.getResourceType());
Console.WriteLine("Get resourceContent: " + htmlResource1.getResourceContent());
Console.WriteLine("to string:\n" + htmlResource1);
}
/**
* This method calculates the rank of a given url and returns it.
*/
public int rankUrl(ResourceContent parentResource, LinkItem item)
{
//These variables will contain the ranks for the whole content match and nearby text match and
//anchor match and the parentrank.
int rankParentUrl = parentResource.getRankOfUrl();
int anchorRank = 0;
//int wholePageRank = 0;
int nearbyTextRank = 0;
int neighborhood = 0;
int context = 0;
int inherited = 0;
char[] separators = { ' ', '\t', '\n' };
NumOfLinks++;
sumOfTotalNearbyWords += item.getText().Split(separators).Length;
sumOfTotalAnchorWords += item.getAnchor().Split(separators, StringSplitOptions.RemoveEmptyEntries).Length;
StreamWriter sw = null;
if (LogDebuggerControl.getInstance().debugRanker)
{
sw = new
StreamWriter("DataForRank" + System.Threading.Thread.CurrentThread.ManagedThreadId + ".txt", true);
sw.WriteLine(" *********HEAD REQUEST *********************************************");
sw.WriteLine(" ***** DATA FOR RANKER******************************************** ");
sw.WriteLine(" URL : " + item.getLink());
sw.WriteLine(" PARENT URL : " + item.getParentUrl());
sw.Close();
}
//rank of the whole page
if (!((lastResourceContent != null) && (lastResourceContent.Equals(parentResource.getResourceContent()))))
{
lastResourceContent = parentResource.getResourceContent();
wholePageRank = getRankOfWholeContent(parentResource);
}
//rank of the nearby text
nearbyTextRank = getRankOfNearbyText(item);
DateTime endTimeOfNearby = DateTime.Now;
//rank of the anchor url
anchorRank = getRankOfAnchor(item);
//rank of the neighborhood,that includes rank of the anchor and the nearby text
if (anchorRank > RankerOptions.ConfidenceLevelOfAnchor)
{
context = 100;
}
else
{
//nearbyTextRank = getRankOfNearbyText(item);
context = nearbyTextRank;
}
neighborhood = (int)(RankerOptions.BETTA * anchorRank + (1 - RankerOptions.BETTA) * context);
//rank of the inherited,that includes the rank of the parentUrl and paren content
inherited = (int)(RankerOptions.ALPHA * rankParentUrl + (1 - RankerOptions.ALPHA) * wholePageRank);
if (LogDebuggerControl.getInstance().debugRanker)
{
sw = new StreamWriter("DataForRank" + System.Threading.Thread.CurrentThread.ManagedThreadId + ".txt", true);
sw.WriteLine("************************DATA CONCLUSION*************************");
sw.WriteLine(" .PARENT RANK: ");
sw.WriteLine(rankParentUrl);
sw.WriteLine(" .RANK OF NEARBY TEXT: ");
sw.WriteLine(nearbyTextRank);
sw.WriteLine(" .AVG OF NEARBY WORDS");
sw.WriteLine((int)(sumOfTotalNearbyWords / NumOfLinks));
sw.WriteLine(" .RANK OF ANCHOR: ");
sw.WriteLine(anchorRank);
sw.WriteLine(" .AVG OF ANCHOR TEXT");
sw.WriteLine((int)(sumOfTotalAnchorWords / NumOfLinks));
sw.WriteLine(" .NEIGHBORHOOD: ");
sw.WriteLine(neighborhood);
sw.WriteLine(" .RANK OF WHOLE CONTENT: ");
sw.WriteLine(wholePageRank);
sw.WriteLine(" .INHERITED: ");
sw.WriteLine(inherited);
sw.WriteLine(" .RANK OF THE URL: ");
sw.WriteLine((int)(RankerOptions.GAMMA * inherited + (1 - RankerOptions.GAMMA) * neighborhood));
// sw.WriteLine(" * END ****************************************************************** ");
sw.Close();
}
//Console.WriteLine(totalRankingTime.TotalSeconds);
return((int)(RankerOptions.GAMMA * inherited + (1 - RankerOptions.GAMMA) * neighborhood));
}
/**
* This method returns a rank for the whole page content.
*/
private int getRankOfWholeContent(ResourceContent resource)
{
//These variables will contain the max and avg of the match levels of the whole
//content of parentReasource.
int maxMatchLevelForContent = 0;
int avgMatchLevelForContent = 0;
StreamWriter sw = null;
if (LogDebuggerControl.getInstance().debugRanker)
{
sw = new
StreamWriter("DataForRank" + System.Threading.Thread.CurrentThread.ManagedThreadId + ".txt", true);
sw.WriteLine(" ***** REQUEST FOR WHOLE CONTENT RANK******************************** ");
//sw.WriteLine(" URL : " + resource.getResourceUrl());
sw.Close();
}
//calculate the min and max of the match levels of the whole resource content to the categories.
if (wholeContentOptions == null)
{
wholeContentOptions = getOptions("wholeContent");
}
List <int> matchLevelsForContent = categorizer.classifyContentToAllCategories(resource.getResourceContent().Substring(0), wholeContentOptions);
maxMatchLevelForContent = calculateMax(matchLevelsForContent);
avgMatchLevelForContent = calculateAvg(matchLevelsForContent);
if (LogDebuggerControl.getInstance().debugRanker)
{
sw = new StreamWriter("DataForRank" + System.Threading.Thread.CurrentThread.ManagedThreadId + ".txt", true);
sw.WriteLine(" .MAX MATCH LEVEL OF WHOLE CONTENT: ");
sw.WriteLine(maxMatchLevelForContent);
sw.WriteLine(" .AVG MATCH LEVEL OF WHOLE CONTENT: ");
sw.WriteLine(avgMatchLevelForContent);
//sw.WriteLine(" .RANK OF WHOLE CONTENT: ");
//sw.WriteLine((int)(RankParams.MinAndMaxRATIO * maxMatchLevelForContent + (1 - RankParams.MinAndMaxRATIO) * avgMatchLevelForContent));
// sw.WriteLine(" * END ****************************************************************** ");
sw.Close();
}
return((int)(RankerOptions.MinAndMaxRATIO * maxMatchLevelForContent + (1 - RankerOptions.MinAndMaxRATIO) * avgMatchLevelForContent));
}
/**
* This method calculates the rank of a given url and returns it.
*/
public int rankUrl(ResourceContent parentResource,LinkItem item)
{
//These variables will contain the ranks for the whole content match and nearby text match and
//anchor match and the parentrank.
int rankParentUrl = parentResource.getRankOfUrl();
int anchorRank = 0;
//int wholePageRank = 0;
int nearbyTextRank = 0;
int neighborhood = 0;
int context = 0;
int inherited = 0;
char[] separators = {' ', '\t', '\n'};
NumOfLinks++;
sumOfTotalNearbyWords += item.getText().Split(separators).Length;
sumOfTotalAnchorWords += item.getAnchor().Split(separators, StringSplitOptions.RemoveEmptyEntries).Length;
StreamWriter sw = null;
if (LogDebuggerControl.getInstance().debugRanker)
{
sw = new
StreamWriter("DataForRank" + System.Threading.Thread.CurrentThread.ManagedThreadId + ".txt", true);
sw.WriteLine(" *********HEAD REQUEST *********************************************");
sw.WriteLine(" ***** DATA FOR RANKER******************************************** ");
sw.WriteLine(" URL : " + item.getLink());
sw.WriteLine(" PARENT URL : " + item.getParentUrl());
sw.Close();
}
//rank of the whole page
if (!((lastResourceContent!=null)&&(lastResourceContent.Equals(parentResource.getResourceContent()))))
{
lastResourceContent=parentResource.getResourceContent();
wholePageRank = getRankOfWholeContent(parentResource);
}
//rank of the nearby text
nearbyTextRank =getRankOfNearbyText(item);
DateTime endTimeOfNearby = DateTime.Now;
//rank of the anchor url
anchorRank = getRankOfAnchor(item);
//rank of the neighborhood,that includes rank of the anchor and the nearby text
if (anchorRank > RankerOptions.ConfidenceLevelOfAnchor)
context = 100;
else
{
//nearbyTextRank = getRankOfNearbyText(item);
context = nearbyTextRank;
}
neighborhood = (int)(RankerOptions.BETTA * anchorRank + (1 - RankerOptions.BETTA) * context);
//rank of the inherited,that includes the rank of the parentUrl and paren content
inherited = (int)(RankerOptions.ALPHA * rankParentUrl + (1 - RankerOptions.ALPHA) * wholePageRank);
if (LogDebuggerControl.getInstance().debugRanker)
{
sw = new StreamWriter("DataForRank" + System.Threading.Thread.CurrentThread.ManagedThreadId + ".txt", true);
sw.WriteLine("************************DATA CONCLUSION*************************");
sw.WriteLine(" .PARENT RANK: ");
sw.WriteLine(rankParentUrl);
sw.WriteLine(" .RANK OF NEARBY TEXT: ");
sw.WriteLine(nearbyTextRank);
sw.WriteLine(" .AVG OF NEARBY WORDS");
sw.WriteLine((int)(sumOfTotalNearbyWords / NumOfLinks));
sw.WriteLine(" .RANK OF ANCHOR: ");
sw.WriteLine(anchorRank);
sw.WriteLine(" .AVG OF ANCHOR TEXT");
sw.WriteLine((int)(sumOfTotalAnchorWords / NumOfLinks));
sw.WriteLine(" .NEIGHBORHOOD: ");
sw.WriteLine(neighborhood);
sw.WriteLine(" .RANK OF WHOLE CONTENT: ");
sw.WriteLine(wholePageRank);
sw.WriteLine(" .INHERITED: ");
sw.WriteLine(inherited);
sw.WriteLine(" .RANK OF THE URL: ");
sw.WriteLine((int)(RankerOptions.GAMMA * inherited + (1 - RankerOptions.GAMMA) * neighborhood));
// sw.WriteLine(" * END ****************************************************************** ");
sw.Close();
}
//Console.WriteLine(totalRankingTime.TotalSeconds);
return ((int)(RankerOptions.GAMMA * inherited + (1 - RankerOptions.GAMMA) * neighborhood));
}
/**
* This method returns a rank for the whole page content.
*/
private int getRankOfWholeContent(ResourceContent resource)
{
//These variables will contain the max and avg of the match levels of the whole
//content of parentReasource.
int maxMatchLevelForContent = 0;
int avgMatchLevelForContent = 0;
StreamWriter sw = null;
if (LogDebuggerControl.getInstance().debugRanker)
{
sw = new
StreamWriter("DataForRank" + System.Threading.Thread.CurrentThread.ManagedThreadId + ".txt", true);
sw.WriteLine(" ***** REQUEST FOR WHOLE CONTENT RANK******************************** ");
//sw.WriteLine(" URL : " + resource.getResourceUrl());
sw.Close();
}
//calculate the min and max of the match levels of the whole resource content to the categories.
if (wholeContentOptions == null)
{
wholeContentOptions = getOptions("wholeContent");
}
List<int> matchLevelsForContent = categorizer.classifyContentToAllCategories(resource.getResourceContent().Substring(0), wholeContentOptions);
maxMatchLevelForContent = calculateMax(matchLevelsForContent);
avgMatchLevelForContent = calculateAvg(matchLevelsForContent);
if (LogDebuggerControl.getInstance().debugRanker)
{
sw = new StreamWriter("DataForRank" + System.Threading.Thread.CurrentThread.ManagedThreadId + ".txt", true);
sw.WriteLine(" .MAX MATCH LEVEL OF WHOLE CONTENT: ");
sw.WriteLine(maxMatchLevelForContent);
sw.WriteLine(" .AVG MATCH LEVEL OF WHOLE CONTENT: ");
sw.WriteLine(avgMatchLevelForContent);
//sw.WriteLine(" .RANK OF WHOLE CONTENT: ");
//sw.WriteLine((int)(RankParams.MinAndMaxRATIO * maxMatchLevelForContent + (1 - RankParams.MinAndMaxRATIO) * avgMatchLevelForContent));
// sw.WriteLine(" * END ****************************************************************** ");
sw.Close();
}
return ((int)(RankerOptions.MinAndMaxRATIO * maxMatchLevelForContent + (1 - RankerOptions.MinAndMaxRATIO) * avgMatchLevelForContent));
}
/**
* This method tries to process the given content assuming that the given content
* can be processed via this processor
*/
public void process(ResourceContent resource)
{
DateTime startTime = DateTime.Now;
List <LinkItem> listOfLinks;
//extract all the links in page
listOfLinks = extractor.extractLinks(resource.getResourceUrl(), resource.getResourceContent());
RuntimeStatistics.addToExtractedUrls(listOfLinks.Count);
DateTime extEndTime = DateTime.Now;
/*** 1. Extracting the link from the request ***/
TimeSpan extRequest = extEndTime - startTime;
//reset the dictionary in filter that contains the urls from the same page
filter.resetDictionary();
int filteredUrlsCount = 0;
foreach (LinkItem item in listOfLinks)
{
//Filter the links and return only links that can be crawled
List <String> links = new List <String>();
links.Add(item.getLink());
List <String> filteredLinks = filter.filterLinks(links);
//If filteredLinks is not empty
if (filteredLinks.Count > 0)
{
filteredUrlsCount++;
Url url = new Url(filteredLinks[0], hashUrl(filteredLinks[0]), ranker.rankUrl(resource, item),
item.getDomainUrl(), hashUrl(item.getDomainUrl()));
deployLinksToFrontier(url);
RuntimeStatistics.addToFeedUrls(1);
}
}
DateTime catStartTime = DateTime.Now;
/*** 2. Ranking and deployment to the frontier ***/
TimeSpan rankTotalRequest = catStartTime - extEndTime;
//Ascribe the url to all the categories it is belonged to.
List <Result> classifiedResults = categorizer.classifyContent(resource.getResourceContent(),
resource.getResourceUrl());
if (classifiedResults.Count != 0)
{
RuntimeStatistics.addToCrawledUrls(1);
}
DateTime catEndTime = DateTime.Now;
/*** 3. Classification of the current request ***/
TimeSpan catTotalRequest = catEndTime - catStartTime;
//Save all the results to Storage
foreach (Result classifiedResult in classifiedResults)
{
Result result = new Result("0", classifiedResult.getUrl(), classifiedResult.getCategoryID(),
resource.getRankOfUrl(), classifiedResult.getTrustMeter());
deployResourceToStorage(result);
}
DateTime endTime = DateTime.Now;
/*** 4. deployment to the database (result) ***/
TimeSpan deployRequest = endTime - catEndTime;
/*** $. Total processing time ***/
TimeSpan totalRequest = endTime - startTime;
// write request time to timing log file
if (LogDebuggerControl.getInstance().enableTiming)
{
StreamWriter sw = new
StreamWriter("_DEBUG_INFO_PROCESSOR_TIMING@" + System.Threading.Thread.CurrentThread.ManagedThreadId + ".txt", true);
sw.WriteLine(" TIMING FOR REQ - [] ");
sw.WriteLine(" - Extractor Time " + extRequest.TotalSeconds + " seconds ");
sw.WriteLine(" - Ranker Time " + extRequest.TotalSeconds + " seconds ");
sw.WriteLine(" - Categori. Time " + catTotalRequest.TotalSeconds + " seconds ");
sw.WriteLine(" - Deploy Time " + deployRequest.TotalSeconds + " seconds ");
sw.WriteLine(" - Total Timing " + totalRequest.TotalSeconds + " seconds ");
sw.Close();
}
}
/**
* This method tries to process the given content assuming that the given content
* can be processed via this processor
*/
public void process(ResourceContent resource)
{
DateTime startTime = DateTime.Now;
List<LinkItem> listOfLinks;
//extract all the links in page
listOfLinks = extractor.extractLinks(resource.getResourceUrl(), resource.getResourceContent());
RuntimeStatistics.addToExtractedUrls(listOfLinks.Count);
DateTime extEndTime = DateTime.Now;
/*** 1. Extracting the link from the request ***/
TimeSpan extRequest = extEndTime - startTime;
//reset the dictionary in filter that contains the urls from the same page
filter.resetDictionary();
int filteredUrlsCount = 0;
foreach(LinkItem item in listOfLinks )
{
//Filter the links and return only links that can be crawled
List<String>links = new List<String>();
links.Add(item.getLink());
List<String> filteredLinks = filter.filterLinks(links);
//If filteredLinks is not empty
if (filteredLinks.Count > 0)
{
filteredUrlsCount++;
Url url = new Url(filteredLinks[0], hashUrl(filteredLinks[0]), ranker.rankUrl(resource,item),
item.getDomainUrl(), hashUrl(item.getDomainUrl()));
deployLinksToFrontier(url);
RuntimeStatistics.addToFeedUrls(1);
}
}
DateTime catStartTime = DateTime.Now;
/*** 2. Ranking and deployment to the frontier ***/
TimeSpan rankTotalRequest = catStartTime - extEndTime;
//Ascribe the url to all the categories it is belonged to.
List<Result> classifiedResults = categorizer.classifyContent(resource.getResourceContent(),
resource.getResourceUrl());
if (classifiedResults.Count != 0) RuntimeStatistics.addToCrawledUrls(1);
DateTime catEndTime = DateTime.Now;
/*** 3. Classification of the current request ***/
TimeSpan catTotalRequest = catEndTime - catStartTime;
//Save all the results to Storage
foreach (Result classifiedResult in classifiedResults)
{
Result result = new Result("0", classifiedResult.getUrl(),classifiedResult.getCategoryID(),
resource.getRankOfUrl(), classifiedResult.getTrustMeter());
deployResourceToStorage(result);
}
DateTime endTime = DateTime.Now;
/*** 4. deployment to the database (result) ***/
TimeSpan deployRequest = endTime - catEndTime;
/*** $. Total processing time ***/
TimeSpan totalRequest = endTime - startTime;
// write request time to timing log file
if (LogDebuggerControl.getInstance().enableTiming)
{
StreamWriter sw = new
StreamWriter("_DEBUG_INFO_PROCESSOR_TIMING@" + System.Threading.Thread.CurrentThread.ManagedThreadId + ".txt", true);
sw.WriteLine(" TIMING FOR REQ - [] ");
sw.WriteLine(" - Extractor Time " + extRequest.TotalSeconds + " seconds ");
sw.WriteLine(" - Ranker Time " + extRequest.TotalSeconds + " seconds ");
sw.WriteLine(" - Categori. Time " + catTotalRequest.TotalSeconds + " seconds ");
sw.WriteLine(" - Deploy Time " + deployRequest.TotalSeconds + " seconds ");
sw.WriteLine(" - Total Timing " + totalRequest.TotalSeconds + " seconds ");
sw.Close();
}
}