static void CheckWebPageLinks()
{
string _currentWebPage = String.Empty;
while (true) //Never stop (for virtualizing IIS socket)
{
GeneralUtils generalUtils = new GeneralUtils();
if (String.IsNullOrEmpty(_currentWebPage))
{
lock (_objectLockWebPagesList)
{
_currentWebPage = WebPagesToCheck.FirstOrDefault(); //Get web page from IIS queue
WebPagesToCheck.Remove(_currentWebPage);
}
}
if ((_currentWebPage != null) && (_currentWebPage != ""))
{
WebPageClass CurrentWebPage = new WebPageClass(_currentWebPage);
Settings settingsValues = new Settings();
SQLRequests SQLReq = new SQLRequests();
CurrentWebPage = SQLReq.GetWebPageCheckResults(CurrentWebPage.WebPageName, settingsValues.TimePeriodForValidCheckResultsInMinutes);
if (CurrentWebPage.AllLinks > 0) //Results from last x minutes exist in the DB and will return to the request
{
Console.WriteLine("Results from DB - " + CurrentWebPage.WebPageName + Environment.NewLine + "Number of links = " + CurrentWebPage.AllLinks + " Working links = " + CurrentWebPage.WorkinkLinks + " Broken links = " + CurrentWebPage.BrokenLinks + " Time out links = " + CurrentWebPage.TimeoutLinks + " Total check time = " + generalUtils.ConvertSecondsToMinutes(CurrentWebPage.TotalCheckTime) + Environment.NewLine);
_currentWebPage = "";
}
else //No results exist in the DB
{
bool addToCheckWebList = false;
lock (_objectLockWebPagesDictionary)
{
if ((WebPagesLinksToCheck.ContainsKey(CurrentWebPage.WebPageName)) && (WebPagesLinksToCheck[CurrentWebPage.WebPageName].Count > 0)) //Web page links currently being checked
{
addToCheckWebList = false;
Thread.Sleep(60000); //Sleep 1 minutes to wait for the check results
}
else //Add a check web page to dictionary
{
addToCheckWebList = true;
if (!WebPagesLinksToCheck.ContainsKey(CurrentWebPage.WebPageName))
{
WebPagesLinksToCheck.Add(CurrentWebPage.WebPageName, new List <string>());
}
}
}
if (addToCheckWebList) //Check web page links
{
DateTime StartTime = new DateTime();
DateTime EndTime = new DateTime();
StartTime = DateTime.Now;
//Get all links from http
WebUtils webUtils = new WebUtils();
List <string> LinksFromWebPage = webUtils.GetAllLinksFromWebPage(CurrentWebPage.WebPageName);
lock (_objectLockWebPagesDictionary)
{
foreach (string item in LinksFromWebPage)
{
WebPagesLinksToCheck[CurrentWebPage.WebPageName].Add(item);
}
CurrentWebPage.AllLinks = WebPagesLinksToCheck[CurrentWebPage.WebPageName].Count;
}
if (CurrentWebPage.AllLinks > 0) //Address is valid and internet connection works
{
int numberOfLinksCheckTasks = settingsValues.DeterminNumberOfSockets(CurrentWebPage.AllLinks);
Task[] AllTasks = new Task[numberOfLinksCheckTasks];
for (int i = 0; i < numberOfLinksCheckTasks; i++)
{
AllTasks[i] = Task.Factory.StartNew(() => CheckNextLink(CurrentWebPage));
}
//All unchecked links after timeout time will considered as timeout links
if (!Task.WaitAll(AllTasks, settingsValues.WebPageCheckTimeoutInMilliseconds))
{
int allUncheckLinks = CurrentWebPage.AllLinks - CurrentWebPage.WorkinkLinks - CurrentWebPage.BrokenLinks - CurrentWebPage.TimeoutLinks;
lock (_objectLockWebPageClass)
{
CurrentWebPage.TimeoutLinks = CurrentWebPage.TimeoutLinks + allUncheckLinks;
}
}
EndTime = DateTime.Now;
TimeSpan ts = EndTime - StartTime;
CurrentWebPage.TotalCheckTime = (int)ts.TotalSeconds;
//Add result to the DB and print a message
if (SQLReq.AddWebCheckResult(CurrentWebPage.WebPageName, CurrentWebPage.AllLinks, CurrentWebPage.WorkinkLinks, CurrentWebPage.BrokenLinks, CurrentWebPage.TimeoutLinks, CurrentWebPage.TotalCheckTime))
{
Console.WriteLine("INSERTED - " + CurrentWebPage.WebPageName + Environment.NewLine + "Number of links = " + CurrentWebPage.AllLinks + " Working links = " + CurrentWebPage.WorkinkLinks + " Broken links = " + CurrentWebPage.BrokenLinks + " Time out links = " + CurrentWebPage.TimeoutLinks + " Total check time = " + generalUtils.ConvertSecondsToMinutes(CurrentWebPage.TotalCheckTime) + Environment.NewLine);
}
else
{
Console.WriteLine("NOT INSERTED - " + CurrentWebPage.WebPageName + Environment.NewLine);
}
_currentWebPage = String.Empty;
}
else //Address is not valid or no internet connection - set web page as timeout page
{
EndTime = DateTime.Now;
TimeSpan ts = EndTime - StartTime;
CurrentWebPage.TotalCheckTime = (int)ts.TotalSeconds;
//Add result to the DB (name and all counts are 0) and print a message
if (SQLReq.AddWebCheckResult(CurrentWebPage.WebPageName, 0, 0, 0, 0, CurrentWebPage.TotalCheckTime))
{
Console.WriteLine("ERROR - Error reading web page links " + Environment.NewLine + "INSERTED - " + CurrentWebPage.WebPageName + Environment.NewLine + "Number of links = " + CurrentWebPage.AllLinks + " Working links = " + CurrentWebPage.WorkinkLinks + " Broken links = " + CurrentWebPage.BrokenLinks + " Time out links = " + CurrentWebPage.TimeoutLinks + " Total check time = " + generalUtils.ConvertSecondsToMinutes(CurrentWebPage.TotalCheckTime) + Environment.NewLine);
}
else
{
Console.WriteLine("ERROR - Error reading web page links and DB insertion failed " + Environment.NewLine + "NOT INSERTED - " + CurrentWebPage.WebPageName + Environment.NewLine);
}
_currentWebPage = String.Empty;
}
}
}
}
Thread.Sleep(3000); //Sleep 3 seconds for reducing actions while queue is empty
}
}