public static SitemapUrlSet GetSitemap(string sitemapName)
{
Initialize();
SitemapUrlSet sitemapSet = new SitemapUrlSet();
SitemapUrlStoreBase S = s_Stores[sitemapName.ToLower()];
sitemapSet.Add(S.GetSitemapUrls(S.Name));
return(sitemapSet);
}
/// <summary>
/// Create a collection of URL elements from XML files
/// </summary>
/// <returns>SitemapUrlSet</returns>
public override SitemapUrlSet GetSitemapUrls(string sitemapName)
{
SitemapUrlSet sitemapUrls = new SitemapUrlSet();
string path = SitemapConfig.GetProviderPathByName(sitemapName);
if (path != null)
{
String file = HttpContext.Current.Server.MapPath(path);
try
{
XmlSerializer serializer = new XmlSerializer(typeof(SitemapUrlSet));
StreamReader reader = new StreamReader(file);
sitemapUrls = (SitemapUrlSet)serializer.Deserialize(reader);
foreach (SitemapUrl url in sitemapUrls)
{
url.changeFreq = sitemapChangeFreq.weekly;
}
reader.Close();
}
// If the file is malformed XML, create an error message.
catch (Exception ex)
{
log.Error("An XML file has failed parsing in FileSitemapUrlStore:GetSitemapUrls().\nFile: " + file + "\nEnvironment: " + System.Environment.MachineName + "\nRequest Host: " + HttpContext.Current.Request.Url.Host + "\n" + ex.ToString() + "\n");
return(new SitemapUrlSet());
}
return(new SitemapUrlSet(sitemapUrls));
}
else
{
log.ErrorFormat("Could not load dictionary provider file located at {0}.", path);
return(new SitemapUrlSet());
}
}
public void Add(SitemapUrlSet fromSet)
{
this._sitemapCollection.AddRange(fromSet._sitemapCollection);
}
public void ProcessRequest(HttpContext context)
{
HttpRequest request = context.Request;
HttpResponse response = context.Response;
response.ContentType = "application/xml";
response.ContentEncoding = System.Text.Encoding.UTF8;
byte[] utf8;
string sitemapName = GetSitemapName(request.FilePath);
if (sitemapName != null)
{
// Check if sitemap is already in the cache; if so, print the cached sitemap
if (HttpContext.Current.Cache[sitemapName] != null)
{
utf8 = (byte[])HttpContext.Current.Cache[sitemapName];
response.OutputStream.Write(utf8, 0, utf8.Length);
}
// Check if the exception is already in the cache; if so, go to error page
else if (HttpContext.Current.Cache[sitemapName + "_ex"] != null)
{
response.ContentType = "text/html";
response.TrySkipIisCustomErrors = true;
response.StatusCode = 500;
response.StatusDescription = "Error Generating Sitemap";
response.End();
}
// If it isn't, get the current sitemap, save that in the cache, and output
else
{
// Create a stopwatch object for timing of sitemap retrieval
Stopwatch stopwatch = new Stopwatch();
TimeSpan timeSpan;
try
{
XmlSerializerNamespaces ns = new XmlSerializerNamespaces();
ns.Add(string.Empty, "http://www.sitemaps.org/schemas/sitemap/0.9");
XmlSerializer ser = new XmlSerializer(typeof(SitemapUrlSet), "http://www.sitemaps.org/schemas/sitemap/0.9");
using (MemoryStream memStream = new MemoryStream())
using (XmlWriter writer = XmlWriter.Create(memStream))
{
stopwatch.Start();
SitemapUrlSet set = Sitemaps.GetSitemap(sitemapName);
ser.Serialize(writer, set, ns);
utf8 = memStream.ToArray();
if (set.Count() > 0)
{
HttpContext.Current.Cache.Add(sitemapName, utf8, null, DateTime.Now.AddMinutes(5), System.Web.Caching.Cache.NoSlidingExpiration, System.Web.Caching.CacheItemPriority.High, null);
response.OutputStream.Write(utf8, 0, utf8.Length);
stopwatch.Stop();
}
else
{
if (stopwatch.IsRunning)
{
stopwatch.Stop();
}
timeSpan = stopwatch.Elapsed;
HttpContext.Current.Cache.Add(sitemapName + "_ex", new byte[0], null, DateTime.Now.AddMinutes(5), System.Web.Caching.Cache.NoSlidingExpiration, System.Web.Caching.CacheItemPriority.High, null);
log.Fatal("Error generating Sitemap " + sitemapName + ". Check required files for " + sitemapName + " sitemap. \nEnvironment: " + System.Environment.MachineName + "\nRequest Host: " + HttpContext.Current.Request.Url.Host
+ "\nTime Elapsed for Sitemap " + sitemapName + " Retrieval: " + timeSpan.ToString() + " \nSitemapHandler.cs:ProcessRequest()");
response.ContentType = "text/html";
response.OutputStream.Write(new byte[0], 0, 0);
response.TrySkipIisCustomErrors = true;
response.StatusCode = 500;
response.StatusDescription = "Error Generating Sitemap";
response.End();
}
}
// Execution timeout is 110±15 seconds, so we'll log an error if the process takes more than 90 seconds.
// This will allow us to track instances where sitemap generation is slow, even if we don't hit a ThreadAbortException.
// See https://blogs.msdn.microsoft.com/pedram/2007/10/02/how-the-execution-timeout-is-managed-in-asp-net/)
timeSpan = stopwatch.Elapsed;
if (timeSpan.TotalSeconds > 90)
{
log.Error("Warning: XML Sitemap " + sitemapName + " is taking longer than expected to retrieve. Check page and file instruction XML files.\nTime Elapsed for Sitemap " + sitemapName + " Retrieval: " + timeSpan.ToString());
}
else
{
log.Debug("Time Elapsed for Sitemap " + sitemapName + " Retrieval: " + timeSpan.ToString());
}
}
// Save the exception in the cache and send an error email
catch (Exception ex)
{
if (stopwatch.IsRunning)
{
stopwatch.Stop();
}
timeSpan = stopwatch.Elapsed;
HttpContext.Current.Cache.Add(sitemapName + "_ex", new byte[0], null, DateTime.Now.AddMinutes(5), System.Web.Caching.Cache.NoSlidingExpiration, System.Web.Caching.CacheItemPriority.High, null);
log.Fatal("Error generating Sitemap " + sitemapName + ". Check required files for " + sitemapName + " sitemap. \nEnvironment: " + System.Environment.MachineName + "\nRequest Host: " + HttpContext.Current.Request.Url.Host
+ "\nTime Elapsed for Sitemap " + sitemapName + " Retrieval: " + timeSpan.ToString() + " \nSitemapHandler.cs:ProcessRequest()", ex);
response.ContentType = "text/html";
response.OutputStream.Write(new byte[0], 0, 0);
response.TrySkipIisCustomErrors = true;
response.StatusCode = 500;
response.StatusDescription = "Error Generating Sitemap";
response.End();
}
}
}
else
{
log.Fatal("Error generating Sitemap for " + request.FilePath + " - sitemap not included in web config. \nEnvironment: " + System.Environment.MachineName + "\nRequest Host: " + HttpContext.Current.Request.Url.Host
+ " \nSitemapHandler.cs:ProcessRequest()");
response.ContentType = "text/html";
response.TrySkipIisCustomErrors = true;
response.StatusCode = 404;
response.StatusDescription = "Sitemap Not Found";
response.End();
}
}
