How to do "traditional" logging in WAPT Pro 2.1

[Guest Siegfried Goeschl]

I have long-running performance test up to 24 hours and a hundreds of users - one thing being tested is account creation. SInce this is a formal test I need to provide the list of accounts I created during the performance test and match those accounts with the accounts actually found in the database. Therefore it is critical to write all created accounts into a logfile.

 

I tried the following options

 

+) using the "log" object provided does not help me for various reasons - it would be spread across all of my users and reporting is becoming unstable in my case (getting socket problems while downloading/parsing the logs)

+) using JavaScript (see the code below) does not work under high load because the Windows Scripting stuff throws exceptions - I think that concurrently writing to the same file causes the issue

 

Any other ideas?

 

Thanks in advance

 

Siegfried Goeschl

 

 

 

=== Start of Script ===

 

/**

* Logs to the given file and prepends a timestamp. If the file does not exist it will be created.

*/

function logToFile(fileName, line)

{

var date = new Date();

var timestamp = null;

var minuteString = null;

var secondString = null;

 

var hourString = (date.getHours() < 10) ? "0" + date.getHours() : date.getHours();

var minuteString = (date.getMinutes() < 10) ? "0" + date.getMinutes() : date.getMinutes();

var secondString = (date.getSeconds() < 10) ? "0" + date.getSeconds() : date.getSeconds();

var timestamp = hourString + ":" + minuteString + ":" + secondString;

var lineWritten = timestamp + ";" + line;

 

var fso = null;

var fh = null;

 

try

{

fso = new ActiveXObject("Scripting.FileSystemObject");

fh = fso.OpenTextFile(fileName, 8, true);

fh.WriteLine(lineWritten);

}

catch(e)

{

log.error("Unable to append to the logfile : " + lineWritten);

}

finally

{

if(fh != null)

{

fh.Close();

}

}

}

 

=== End Of Script ===

[sergei 0]

Use an unique file name for each virtual user (for example, use $UserID for file name) and merge files after test completion.

[Guest Siegfried Goeschl]

Hi Sergei,

 

there are many ways to skin the cat .... :-)

 

I implemented that in the mean time and need to test it but I think that better logging support would be a valuable addition to WAPT - image what my customer says if I try to explain why I need to write to 500 individual logfiles ... :-(

[sergei 0]

Ok, we will think.

[Guest Siegfried Goeschl]

I tested the solution using a single file for each virtual user and it does not work - when I have more virtual users trying to log causes an Exception saying "Object error".

 

For the records the script I'm using

 

/**

* Logs to the given file and prepends a timestamp. If the file does not exist it will be created.

*/

function logToCsv(baseFileName, line)

{

var date = new Date();

var fileName = baseFileName + "." + context.userId + ".csv";

 

var hourString = (date.getHours() < 10) ? "0" + date.getHours() : date.getHours();

var minuteString = (date.getMinutes() < 10) ? "0" + date.getMinutes() : date.getMinutes();

var secondString = (date.getSeconds() < 10) ? "0" + date.getSeconds() : date.getSeconds();

var timestamp = hourString + ":" + minuteString + ":" + secondString;

var lineWritten = timestamp + ";" + line;

 

var fso = null;

var fh = null;

 

try

{

fso = new ActiveXObject("Scripting.FileSystemObject");

 

if (fso.FileExists(fileName))

{

fh = fso.OpenTextFile(fileName, 8, true);

}

else

{

fh = fso.CreateTextFile(fileName, true);

}

 

fh.WriteLine(lineWritten);

}

catch(e)

{

log.error("Unable to append to the logfile : " + lineWritten);

log.error("Root Cause : " + e);

}

finally

{

if(fh != null)

{

fh.Close();

}

}

[sergei 0]

What is your hardware specification and how many virtual users did you run?