Problem
When configuring the SeaLights agent for DotNet, it isn't easy to manage the agent files in the correct version - especially in standalone environments (containers, backend servers, etc)
Solution
The following PowerShell script checks for the recommended agent and latest version, and in case it does not exist locally - downloads & unzips it in the given directory.
Downloading the Recommended Agent set in settings
[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
$previousProgressPref=$global:ProgressPreference
$global:ProgressPreference = "SilentlyContinue" #Disable Progress bar to speed up download and expand
$sldomain="mycompany.sealights.co" #Update with your customer domain
$slToken="$(Get-Content sltoken.txt)" #Prefer a credential Environment variable for the token
Write-Output "Retrieve version from Sealights settings..."
$slHeader=@{'Accept'='application/json'; 'Authorization'="Bearer $slToken"}
$SLSettingsVersion = ((iwr -Uri https://$sldomain/api/v2/agents/dotnet/recommended -UseBasicParsing -Headers $slHeader).Content | ConvertFrom-Json | Select-Object agent).agent.version
$SLAgentPath=".\SL.DotNet\"
$SlAgentVersionPath = $(Join-Path -Path $SLAgentPath -ChildPath "version.txt")
if( $(Test-Path -Path $SlAgentVersionPath -PathType Leaf) )
{
$SLLocalVersion=Get-Content $SlAgentVersionPath
if ( $SLLocalVersion -eq $SLSettingsVersion )
{
Write-Output "Skipping Download - Local agent matches current settings version: $SLLocalVersion"
} else {
Write-Output "Local agent is not using the latest version. Deleting local agent."
Remove-Item -Recurse -Force $SLAgentPath
#Get-ChildItem -path $SLAgentPath -include * -Recurse -exclude sltoken.txt -erroraction silentlycontinue | Remove-Item -Force -Verbose
}
}
if( -Not $(Test-Path -Path $SlAgentVersionPath -PathType Leaf) )
{
Write-Output "Download Sealights DotNet agent set in settings..."
iwr -OutFile .\sealights-dotnet-agent.zip -UseBasicParsing -Uri http://agents.sealights.co/SL.DotNet/SL.DotNet-$SLSettingsVersion.zip
Write-Output "Expanding downloaded archive and placing token..."
Expand-Archive .\sealights-dotnet-agent.zip -DestinationPath $SLAgentPath -Force
Remove-Item -Force .\sealights-dotnet-agent.zip
Get-ChildItem -Directory -Path .\SL.DotNet\ | Foreach-Object { $slToken | Out-File -NoNewline -Force (Join-Path $_.FullName "sltoken.txt") }
Write-Output "Sealights agent version used is: $(Get-Content $SlAgentVersionPath)"
}
#Restore progress bar
$global:ProgressPreference = $previousProgressPref
#End of script