Parameterised powershell script through SSIS Execute Process Task (with UNC) - sql-server

Question

I've done varied amounts of research into how to run a parameterised PS script from SSIS. I am having issues getting a parameterised script running. PS script is as follows, if I hard code the parameters into the script it behaves as expected:
Param ([string]$filepath,[string]$filename)
$Path = $filepath
$InputFile = (Join-Path $Path $filename)
$Reader = New-Object System.IO.StreamReader($InputFile)
While (($Line = $Reader.ReadLine()) -ne $null) {
If ($Line -match 'FILE\|([^\|]+)') {
$OutputFile = "$($matches[1]).txt"
}
Add-Content (Join-Path $Path $OutputFile) $Line
}
Running in SSIS execute process task, I am trying to build the Arguments command via an expression as follows:
"-ExecutionPolicy ByPass -File " + #[User::vPSScriptLocation] + " " + #[User::vFilePath]+ " "+ #[User::vFileName]
Evaluating the expression gives the following:
-ExecutionPolicy ByPass -File \\WorkDirectory\Script.ps1 \\transfer datafile.data
Upon execution, the task fails. The .ps1 is deleted from the work directory and SSIS gives the following error code:
Error: 0xC0029151 at Execute powershell script, Execute Process Task: In Executing "C:\Windows\System32\WindowsPowerShell\v1.0\PowerShell.exe" "-ExecutionPolicy ByPass -File \\WorkDirectory\Script.ps1 \\transfer datafile.data" at "", The process exit code was "-196608" while the expected was "0".
Looks like it's getting an empty string where it shouldn't? Any pointers appreciated.

Answer 1

OK so as it appears I could not call a UNC path to execute this using an Execute Process Task, I decided to execute this within a Script Task with a reference added to System.Management.Automation which allowed me to create a PowerShell instance. This is far from my ideal solution as I really wanted to call a .ps1 file, but looks like this is my only solution given I need to use a UNC path.
I build the PS script with my Dts variables and then executed it within the instance, which achieved the desired result:
public void Main()
{
string filepath = Dts.Variables["User::vUNCPath"].Value.ToString();
string filename = Dts.Variables["User::vFileName"].Value.ToString();
string searchterm = Dts.Variables["User::vSearchTerm"].Value.ToString();
bool fireAgain = true;
// Build powershell script
string script = "$Path = \""+filepath+"\";"+
"$InputFile = (Join-Path $Path \""+ filename+"\");" +
"$Reader = New-Object System.IO.StreamReader($InputFile);" +
"While (($Line = $Reader.ReadLine()) -ne $null) {" +
"If ($Line -match '"+searchterm+"') { "+
"$OutputFile = \"$($matches[1]).txt\"};" +
"Add-Content (Join-Path $Path $OutputFile) $Line}";
Dts.Events.FireInformation(0, "Info", "Powershell script built: " + script, String.Empty, 0, ref fireAgain);
try
{
// Create instance to run script
using (PowerShell psinstance = PowerShell.Create())
{
//Assign built script to this instance
psinstance.AddScript(script);
//Run powershell script
psinstance.Invoke();
}
Dts.TaskResult = (int)ScriptResults.Success;
}
catch (Exception ex)
{
Dts.Events.FireError(0, "Error", ex.Message, String.Empty, 0);
Dts.TaskResult = (int)ScriptResults.Failure;
}
}

Answer 2

If you're running your script as a ps1-File with a param-block like this, your execution-call should name the parameters by their name:
"-ExecutionPolicy ByPass -File " + #[User::vPSScriptLocation] + " -filepath " + #[User::vFilePath]+ " -filename "+ #[User::vFileName]
This should do it, if you use a valid filepath and filename.
If it doesn't work, please try to write your script as a function and try it in a powershell-console. Your script as a function looks like this:
function SearchLines
{
Param (
[string]$filepath,
[string]$filename
)
$Path = $filepath
$InputFile = (Join-Path $Path $filename)
$Reader = New-Object System.IO.StreamReader($InputFile)
While (($Line = $Reader.ReadLine()) -ne $null) {
If ($Line -match 'FILE\|([^\|]+)') {
$OutputFile = "$($matches[1]).txt"
}
Add-Content (Join-Path $Path $OutputFile) $Line
}
}
Usage:
SearchLines -filepath "\\your\unc\path\here" -filename "filename.txt"
If this don't work for you, please let us know which error you got.
Thx.
UPDATE:
Based on your comments, i wrote your function new in the hope, it meets your requirements as close as possible. The function now looks like this:
function SearchLines
{
Param (
[string]$InputFile
)
$FileContent = Get-Content $InputFile
foreach($Line in $FileContent)
{
If ($Line -match 'FILE\|([^\|]+)')
{
$OutputFile = "$($matches[1]).txt"
}
Add-Content -Path $OutputFile -Value $Line
}
}
Usage:
SearchLines -InputFile c:\your\path\to\your\file.log
This function creates for every line in your given file a new file in the actual folder named what is written in the line. The Cmdlet Join-Path simply adds the two strings together, without any check for plausibility. That's why you can simply commit the full path to your file instead of the path and the file in separate parameters.
If you need the path of the inputfile to set it for your outputfiles, you can get it with these lines:
$tmpPath = Get-Childitem $InputFullPath
$Path = $tmpPath.Directory.FullName
Because you didn't explained what exactly this script should do, i hope you can use this to get what you wanted.
Greetings