powerShell写日志功能

Function Write-Log {
    [cmdletbinding()]

    Param(
    [Parameter(Position=0)]
    [ValidateNotNullOrEmpty()]
    [string]$Message,
    [string]$Path= "$env:SHELL_LOCATION" + "\log\shell.log",
    [string]$level = "info"
    )
 
 $LogFile = $Path

 $setLevel = 'debug';
 
 switch -wildcard ($setLevel)
 {
 'info'{
  switch -wildcard ($level) {
   'info' {Write-Output "[$level] : $(Get-Date) ---- $Message" | Out-File -FilePath $LogFile -Append }
   'warning'{Write-Output "[$level] : $(Get-Date) ---- $Message" | Out-File -FilePath $LogFile -Append }
   'error' {Write-Output "[$level] : $(Get-Date) ---- $Message" | Out-File -FilePath $LogFile -Append }
   'debug' {}
   default {}
  }
 }

 'debug' {
  switch -wildcard ($level) {
   'info' {Write-Output "[$level] : $(Get-Date) ---- $Message" | Out-File -FilePath $LogFile -Append }
   'warning'{Write-Output "[$level] : $(Get-Date) ---- $Message" | Out-File -FilePath $LogFile -Append }
   'error' {Write-Output "[$level] : $(Get-Date) ---- $Message" | Out-File -FilePath $LogFile -Append }
   'debug' {Write-Output "[$level] : $(Get-Date) ---- $Message" | Out-File -FilePath $LogFile -Append }
   default {}
  }
 }
 
 'warning' {
  switch -wildcard ($level) {
   'info' {}
   'warning' {Write-Output "[$level] : $(Get-Date) ---- $Message" | Out-File -FilePath $LogFile -Append }
   'error' {Write-Output "[$level] : $(Get-Date) ---- $Message" | Out-File -FilePath $LogFile -Append }
   'debug' {}
   default {}
  }
 }

 'error' {
  switch ($level) {
   'info' {}
   'warning' {}
   'error' {Write-Output "[$level] : $(Get-Date) ---- $Message" | Out-File -FilePath $LogFile -Append }
   'debug' {}
   default {}
  }
 }
 }
}