public JsonResult StartIndexProcess(string pageName)
{
try
{
CRAWLER_DEPTH = Int16.Parse(ConfigurationManager.AppSettings["DepthLevels"]);
string Folder = SearchUtils.GetDirectoryForFile(pageName, -1);
string actualPage = System.IO.Path.GetFileName(pageName);
//create a record to serve as a groupID for the site or group of pages to index.
int siteIndexID = SearchServices.GetNewSiteIndex(Folder, actualPage);
//now save the first page so that the parallel functions have links to use.
SearchResult csr = SearchUtils.LoadPageContent(pageName, -1, siteIndexID);
SearchUtils.GetLinksAndKeywords(csr);
csr.PageID = SearchServices.SaveSearchResults(csr);
//now everything is ready to run in a loop until all pages have been indexed.
return(StartCrawler(-1, siteIndexID));
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
return(null);
}
public JsonResult StartCrawler(int parentID, int siteIndexID)
{
IndexResultVM finalCount;
try
{
//this method runs recursively until the limit is reached.
ConcurrentBag <SearchResult> searchResults = new ConcurrentBag <SearchResult>();
// get the links from the saved links
bool MaximumDepthReached = SearchServices.CanReachMaxDepth(CRAWLER_DEPTH, siteIndexID);
if (!MaximumDepthReached)
{
List <PageContentVM> pageLinksMain = SearchServices.GetLinkDataForSiteIndexID(siteIndexID);
//put the links into a list so that they can be run in Parallel.
Parallel.ForEach(pageLinksMain, (sr) =>
{
string fullURL = string.Join("", sr.PageDirectory, sr.PageName);
SearchResult csr = SearchUtils.LoadPageContent(fullURL, sr.ParentID, siteIndexID);
searchResults.Add(csr);
});
// now that all the links have content, do a regular loop for the parsing and saving .
foreach (SearchResult csr in searchResults)
{
SearchUtils.GetLinksAndKeywords(csr);
csr.PageID = SearchServices.SaveSearchResults(csr);
StartCrawler(csr.PageID, siteIndexID);
}
}
}
catch (DbEntityValidationException)
{
Server.ClearError();
}
catch (Exception)
{
Server.ClearError();
}
finally
{
finalCount = SearchServices.GetIndexedPagesTotals(siteIndexID);
}
return(Json(finalCount, JsonRequestBehavior.AllowGet));
}
