Start an Application with a Powershell Script an Restart it Automatic on non Return Code 0, also capture Eventlog crash entry into the log

StartAppWithEventLogCapturing.ps1

# Start the Terminal Application on Logon
# Automatic Restart Terminal Application on Crash

Param([String]$Path, [String]$ProcessName="MenuePlan.Terminal.UI", [String]$LogFile="generateme")

$defaultLogRootPath = "c:/temp";  # Define the Default Directory for Log Files
$InstantCrashCounter = 5; # Ammount of Instant Crashes before we stop restarting Application
$secondForDetectingInstantCrash = 60;  # Define when a Instant Crash happen in Seconds

if($Path -eq "")
{
  Write-Error -Message "Path is required!" -ErrorAction Stop
}
if(-not (Test-Path -Path $Path))
{
  Write-Error -Message "Cannot find Executable on $Path" -ErrorAction Stop
}

if($LogFile -eq "generateme")
{

  $logFileName = "menuplan_starter_" + $Path.Replace('/','-').Replace(':','-').Replace('\','-').Replace('.','_') + ".log";
  $LogFile = "$($defaultLogRootPath)/$($logfileName)"
}

function Add-Log($Message,$Sub="global",$WithoutStamp=$false)
{
  $logTime = Get-Date -Format "dd-MM-yyyy hh-mm-ss"
  $entry = "{0} : {1}`t{2}" -f $logTime,$Sub,$Message;
  if($withoutStamp)
  {
    $entry = "`t`t`t`t{0}" -f $Message;
  }

  Write-Host $entry;
  $entry | Out-File $LogFile -Append -Force -Encoding utf8;

}

function Get-ApplicationCrash($Path, $ProcessName, $After)
{
  $applog = Get-EventLog -LogName Application -EntryType Error -Newest 1 -After $After | Where-Object { $_.Message -like "*$($Path)*" } | Select -ExpandProperty Message
  if($applog -ne "")
  {
    Add-Log -Message "Application Crash Event Log" -Sub "Crash"
    foreach($line in $($applog -split "`r`n"))
    {
      Add-Log -Message $line -WithoutStamp $true
    }
  }
}

function StartApp($Path,$ProcessName)
{
  $pinfo = New-Object System.Diagnostics.ProcessStartInfo
  $pinfo.FileName = "$Path"
  $pinfo.RedirectStandardError = $true
  $pinfo.RedirectStandardOutput = $true
  $pinfo.UseShellExecute = $false
  $pinfo.Arguments = ""
  $p = New-Object System.Diagnostics.Process
  $p.StartInfo = $pinfo
  Add-Log -Message "Starting Application $($ProcessName)" -Sub "Watcher";
  $p.Start() | Out-Null
  #Do Other Stuff Here....
  $p.WaitForExit()
  $p.ExitCode
}

# MAIN
do
{  
  $StartDate = Get-Date;
  $returnCode = StartApp -Path $Path -ProcessName $ProcessName;
  if($returnCode -ne 0)
  {
    Get-ApplicationCrash -Path $Path -ProcessName $ProcessName -After $StartDate;
    Add-Log -Message "Application $($ProcessName) has Invalid Return Code $($returnCode)" -Sub "Crash";
    Add-Log -Message "Restarting Application $($ProcessName)" -Sub "Watcher";

    # Detect if Application Crash Instantly
    if( $($StartDate.AddSeconds($secondForDetectingInstantCrash)) -gt $(Get-Date) ) {
      # We Crashed Instantly
      $InstantCrashCounter--;
      Add-Log -Message "Application $($ProcessName) Crash Instantly. CrashCounter: $($InstantCrashCounter)/5" -Sub "Crash";
    }else{
      $InstantCrashCounter=5;
    }

    # Detect if we Crash to often
    if($InstantCrashCounter -eq 0)
    {
      Add-Log -Message "Application $($ProcessName) crash to often, we stopping" -Sub "Crash";
      $host.SetShouldExit($returnCode);
      exit
    }

  }
}until($returnCode -eq 0);

Add-Log -Message "Application $($ProcessName) stop successfully with Exit Code $returnCode" -Sub "Watcher"