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Google sitemap agent and update it to Google with a ’ping’ service

Ferdi Verlaan  November 11 2010 15:41:46
Google has a cool little website called 'Google Webmaster tools' located at: https://www.google.com/webmasters/tools/

One of the features of Webmaster tools is the possibility to upload the sitemap of your site. This will improve the indexing of your website. A Google sitemap is a XML file which has the following structure:


<?xml version="1.0" encoding="UTF-8" ?>
<urlset xmlns="http://www.google.com/schemas/sitemap/0.84"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.google.com/schemas/sitemap/0.84
http://www.google.com/schemas/sitemap/0.84/sitemap.xsd">
<url>
  <loc>http://www.domain.com/dir/page.html</loc>
  <lastmod>2010-10-27</lastmod>
  <priority>1</priority>
  </url>
</urlset>

Dynamic sitemap

We want to update this sitemap automatically with a Lotusscript agent when we create or modify a page. We have created a view called 'vw-web-Sitemap' which has the structure of our content in it in hierachical format. It loops through the view, get the field 'urlkey_seo' and the last modified date and places them in the XML. The field 'urlkey_seo' contains the actual path of the page (ex: /products/coolproduct1/specs).


We created a small function to get the date in the correct format (yy-mm-dd). In our case we use three templates (forms), and we give a different priority to it, the homepage should be 1 (high), our products should have a priority of 0.8, and all other pages should have a priority of 0.5 (medium).


The agent has the following code:


%REM

       Agent web-GoogleSitemap

       Created Oct 27, 2010 by Ferdi Verlaan/Aas

       Description: Creates a google sitemap from the content of the sitemap view

%END REM

Option
Public
Option
Declare

Sub
Initialize

       
On Error GoTo errh

       
Dim session As New NotesSession
       
Dim db As NotesDatabase
       
Dim view As NotesView
       
Dim doc As NotesDocument
       
Dim rel As String        
       
       
Set db = session.Currentdatabase
       
Set view = db.Getview("vw-web-Sitemap")
       
Set doc = view.Getfirstdocument()

       
'header information for XML        
       
Print {Content-Type: application/xml"}
       
Print {<?xml version="1.0" encoding="UTF-8"?>}
       
Print {<urlset xmlns="http://www.google.com/schemas/sitemap/0.84"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:schemaLocation="http://www.google.com/schemas/sitemap/0.84
        http://www.google.com/schemas/sitemap/0.84/sitemap.xsd">}

       
Do Until doc Is Nothing
               
               
If doc.Form(0) = "cnt-Diensten" Then
                       rel =
"0.8"
               
elseIf doc.Form(0) = "cnt-Start" Then
                       rel =
"1"
               
Else
                       rel =
"0.5"
               
End If
               
               
Print {<url>}
               
Print {<loc>http://www.aashq.nl} & doc.urlkey_seo(0) & {</loc>}
               
Print {<lastmod>} & genDate(doc) & {</lastmod>}
               
Print {<priority>} & CStr(rel) &{</priority>}
               
Print {</url>}
               
               
Set doc = view.Getnextdocument(doc)
       
Loop        
       
       
Print {</urlset>}
       
       
Exit Sub
       
errh:

       
Print "Error on line " & Erl & " - " & Err & " - " & Error & " in "& GetThreadInfo(1)        
       
Exit Sub
       

End
Sub


%REM

       Function lenDate

       Description: checks the length of the day or month value

%END REM

Function
lenDate(ndt As String) As string
       
       
If Len(ndt) = 1 Then
               lenDate =
"0" + ndt
       
Else
               lenDate = ndt

       
End If
       

End
Function
%REM

       Sub genDate

       Description: Creates a yy-mm-dd date string

%END REM

Function
genDate(doc As NotesDocument) As string
       
       
Dim ndt As New NotesDateTime(CStr(doc.LastModified))
       
Dim y As String
       
Dim m As String
       
Dim d As string
       
       y =
CStr(Year(CStr(ndt.Lslocaltime)))
       m = lenDate(
CStr(Month(CStr(ndt.Lslocaltime))))
       d = lenDate(
CStr(Day(CStr(ndt.Lslocaltime))))
       
       genDate = y +
"-" + m + "-" + d
       
       
Exit Function
               

End
Function


This agent will create a nice XML output for Google Sitemaps. You can submit it to Google with Webmaster tools > Siteconfiguration > Sitemaps.


Image:Google sitemap agent and update it to Google with a ’ping’ service

Ping sitemap

After submission Google will index the sitemap periodically, but wouldn't it be great to let Google now that the sitemap has been updated? That is possible through a special PING website of Google. The url of this ping service is:
http://www.google.com/webmasters/sitemaps/ping? and then the url of your sitemap.

We have created a ping agent for Lotus Notes which automatically runs after a modification or creating of a new document.

The agent code is listed below (works only from Windows):


%REM

       Agent web-pingSitemap

       Created Nov 11, 2010 by Ferdi Verlaan/Aas

       Description: Pings the sitemap to Google services

%END REM

Option
Public
Option
Declare

Sub
Initialize
       
Dim result As String
       result = pingSitemap(
"http://www.google.com/webmasters/sitemaps/ping?sitemap=http://www.domain.com/website.nsf/web-GoogleSitemap.xml")
End
Sub

Function
pingSitemap(strUrl As String) As String
       
 
       
Dim oHTTP As Variant
       
Dim strReturn As String
       
       
Set oHTTP = CreateObject("Microsoft.XMLHTTP")

       oHTTP.open
UCase$("POST"), strUrl, False, "", ""
       oHTTP.setRequestHeader
"Content-type", "application/x-www-form-urlencoded"
       oHTTP.send(
"")
       
       pingSitemap = oHTTP.responseText

       
Set oHTTP = Nothing
       

End
Function

Good luck with implementing this on your own website.
Comments

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