SAP Web Dispatcher and wildcard (asterisk)

[Aleksandr]

Hello colleagues.

 

You may face with a task when you need to add all particular url prefixes to SAP WD profile (wdisp with SRCURL parameter).

SAP documentation describes  SRCURL like "SRCURL=/sap/;/myapp/ means: Requests whose  URL starts with “/sap/” or “/myapp/” are forwarded to this system." and doesn't give information about possibility to use wildcard (asterisk).

First of all you need to catch all url prefixes. The log files (access_0_log-<date>) contain information about all url prefixes which are used via SAP WD. The powershell script below will help you to find all GET request and write it to a separate file. After that you may delete identical rows via Notepad++ (Edit -> Line Operations -> Remove Duplicate Lines) and find unique url prefixes.

Powershell script:

# - START - Param

$location = "C:\Users\zaytsev.ayu\Desktop\wd\Log\"; #folder with logs

$name_result_file = "!result_get_70_file.txt"; # name of folder 

$result_file = $location + $name_result_file; # saving point

# - END - Param



$array_dir_name = Get-ChildItem -Path $location -Force -ErrorAction SilentlyContinue | Select-Object Name;

$n = 0; #starting point

Write-Output ($array_dir_name.Count); #count of files in $location

while ($n -lt $array_dir_name.Count)

{

    $current_file = $location + $($array_dir_name[$n].Name);

    Write-Output ($current_file);

    if( Test-Path -Path $current_file -PathType Leaf -ErrorAction SilentlyContinue ) {

        $lines = Get-Content $current_file;

        foreach ( $line in $lines ) {

            if ( $line -match "GET (?<content>.*) HTTP/1.1" ) { #regular expression for matching needed content from row

                #Write-Output ($matches['content']);

                Add-Content -Path $result_file -Value $matches['content'];

            }

        }

    }

    $n++;



    #if ($n -eq 100) {

    #    break; #stopping point

    #}

} 

For example:

Found url prefixes	Possible final mask for SRCURL
/com.sap.portal.ivs.iviewservice/ /com.sap.portal.layouts.framework/ /com.sap.portal.navigation.afp.dtn/ /com.sap.portal.navigation.afp.dynamicnavigation/ /com.sap.portal.navigation.afp.layout/ /com.sap.portal.navigation.afp.masthead/	/com.sap.portal*

And as result you can add the final mask (url prefix) to SAP WD profile file:

wdisp/system_1 = SID=<SID>, MSHOST=<FQDN Message service (MS)>, MSPORT=<port of MS>, SRCURL=/com.sap.portal;/irj/

It means that "/<url_prefix>;"  works like "/<url_prefix>*;"