vmware-startup-script.ps1

# Returns true if the vm is running, else false
Function isVmRunning([string]$name) {
  # Whether the named vm is running
  [bool]$isRunning = $false

  # Use `vmrun` to get the list of currently running vms
  [string[]]$runningVms = Invoke-Expression "vmrun list"

  # Get the number of running VMs
  [int16]$numOfRunningVms = $runningVms.Get(0).split(":").Get(1).Trim()

  if ($numOfRunningVms -gt 0) {
    for ($i = 1; $i -lt $runningVms.length; $i += 1) {
        if ($runningVms[$i].Contains($name)) {
            $isRunning = $true
            break
        }
    }
  } else {
    # The `vmrun list` command appears not to show vms started before a user logs in.
    # Using Get-Process to doubly check if the process isn't already running.
    try {
      $process = Get-Process -Name "vmware-vmx" -ErrorAction SilentlyContinue
    } catch {}

    if ($process) {
      $isRunning = $true
    }
  }

  Return $isRunning
}

Function LogEvent([string]$source, [int16]$eventId, [string]$entryType, [string]$message) {
  Write-EventLog -LogName Application -Source $source -EventId $eventId -EntryType $entryType -Message $message

  [string]$logBoundMessage = (Get-Date -Format g) + " " + $message

  switch -wildcard ($entryType.ToLower()) {
    "error" {
      $logBoundMessage >> "C:\vm\vmware\windows-7-error-log.txt"
    }

    "info" {
      $logBoundMessage >> "C:\vm\vmware\windows-7-info-log.txt"
    }

    default {
      $logBoundMessage >> "C:\vm\vmware\windows-7-info-log.txt"
    }
  }
}

Function main() {
  # Messages
  [string]$errorLogMessage = "The Windows 7 virtual machine failed to start."
  [string]$vmRunningMessage = "The Windows 7 virtual machine is already running."
  [string]$successLogMessage = "The Windows 7 virtual machine started successfully."

  [string]$eventLogSource = "VMWare Custom Scripts"
  [string]$vmFileLocation = "H:\vm\vmware\Windows 7\Windows 7.vmx"
  [string]$vmName = "Windows 7.vmx"

  # Create the event log source.
  try {
    New-EventLog -LogName Application -Source $eventLogSource -ErrorAction SilentlyContinue
  } catch {}

  if (isVmRunning $vmName) {
    LogEvent $eventLogSource 2004 Information $vmRunningMessage
  } else {
    # Start the vm
    vmrun -T player -gu REPLACE_ME_WITH_GUEST_USERNAME -gp REPLACE_ME_WITH_GUEST_PASSWORD start $vmFileLocation nogui

    # Exit with an error if the VM process is not detected
    if (isVmRunning $vmName -eq $False) {
      LogEvent $eventLogSource 2000 Information $successLogMessage
      exit 0
    } else {
      LogEvent $eventLogSource 5000 Error $errorLogMessage

      # The caller of this script knows to retry on an error exit code.  We don't want to continuously retry 
      # starting the vm as it may land us in an infinite loop.
      exit 1
    }
  }
}

# Kick off the startup process.
main