Adds supplied source value to the Windows Application Event Log. Requires admin privileges and will warn the user if elevation is required.

add-eventlog-source.ps1

<#
    Add log source to Application Event Log if not already there - REQUIRES ADMIN privileges

    Peter Tyrrell
#>

param(
    [Parameter(Mandatory=$false,ValueFromPipeline=$true,Position=0)]
    [string]$logsrc = "Andi Solr Update"
)

# check for admin 
if (-NOT ([Security.Principal.WindowsPrincipal] [Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole] "Administrator")) {
    Write-Warning ("You do not have admin privileges. Re-run this script as an administrator.")
    break
}

try {
    if (-not [System.Diagnostics.EventLog]::SourceExists($logsrc)) {
        [System.Diagnostics.EventLog]::CreateEventSource($logsrc, "Application")
        Write-Host ("INFO Source '{0}' added to Application Event Log." -f $logsrc)
    }
    else {
        Write-Host ("INFO {0} is already a source in Application Event Log." -f $logsrc)
    }
}
catch {
    throw
}