TFS 2017 - [ProjectName].setParameters.xml with powershell - powershell

Question

I create a zip Package in my build then i deploy it to a diffrent machine i am pasing few Parameters in my parameters.xml
<?xml version="1.0" encoding="utf-8"?>
<parameters>
<parameter name="WebSiteUserName" description="Please enter the username" defaultvalue="__WebSiteUserName__" tags="">
<parameterentry kind="XmlFile" scope="\\web.config$" match="/configuration/connectionStrings/add[#key='WebSiteUserName']/#value">
</parameterentry>
</parameter>
<parameter name="WebSiteUserPassword" description="Please enter the password" defaultvalue="__UserPassword__" tags="">
<parameterentry kind="XmlFile" scope="\\web.config$" match="/configuration/connectionStrings/add[#key='WebSiteUserPassword']/#value">
</parameterentry>
</parameter>
<parameter name="WebSiteDomain" description="Domiain" defaultvalue="__Domain__" tags="">
<parameterentry kind="XmlFile" scope="\\web.config$" match="/configuration/appSettings/add[#key='WebSiteDomain']/#value">
</parameterentry>
</parameter>
</parameters>
</parameters>
Then i run a powershell script
param(
[string]$paramsFilePath
)
Write-Verbose -Verbose "Entering script Replace-SetParameters.ps1"
Write-Verbose -Verbose ("Path to SetParametersFile: {0}" -f $paramsFilePath)
# get the environment variables
$vars = Get-ChildItem -path env:*
# read in the setParameters file
$contents = Get-Content -Path $paramsFilePath
# perform a regex replacement
$newContents = "";
$contents | % {
$line = $_
if ($_ -match "__(\w+[\.\w+]*)__") {
$setting = Get-ChildItem -path env:* | ? { $_.Name -eq $Matches[1] }
while ($setting) {
Write-Verbose -Verbose ("Replacing key {0} with value from environment" -f $setting.Name)
$line = $_ -replace "__(\w+[\.\w+]*)__", $setting.Value
}
}
$newContents += $line + [Environment]::NewLine
}
Write-Verbose -Verbose "Overwriting SetParameters file with new values"
Set-Content $paramsFilePath -Value $newContents
Write-Verbose " Assigning Parameters"
Write-Verbose -Verbose "Exiting script Replace-SetParameters.ps1"
It will go through the parameters file and replace the parameters token with the enviromental variable.
In my setParamaters.xml file The WebSiteUsername only gets changed
<?xml version="1.0" encoding="utf-8"?>
<parameters>
<setParameter name="IIS Web Application Name" value="Default Web Site/SomeWebsite" />
<setParameter name="WebSiteUserName" value="username" />
<setParameter name="WebSiteUserPassword" value="__UserPassword__" />
<setParameter name="Web.config Connection String" value="SomeValueForConnection" />
</parameters>
I dont know why this is happening. Any Thoughts?

Answer 1

I think you want to get the password from a TFS release definition environment.
You can´t access hidden fields with
$vars = Get-ChildItem -path env:secretVariable
There is a way but that´s only works in the context of a TFS VNext build or release extension.
In your case the only possibility of access is to set the variable as a script argument like this:
-paramsFilePath $(paramsFilePath) -password $(secretVariable)
In your script add the parameter like
param(
[string]$paramsFilePath,
[string]$password
)