81 lines
3.7 KiB
PowerShell
81 lines
3.7 KiB
PowerShell
#Function rotate the logs
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function Invoke-LogRotation ($LogFile, $MaxLogFiles, $MaxLogSize) {
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<#
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.SYNOPSIS
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Handle log rotation.
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.DESCRIPTION
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Invoke-LogRotation handles log rotation
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.NOTES
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Author: Øyvind Kallstad (Minimized and changed for WAU 12.01.2023 by Göran Axel Johannesson)
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URL: https://www.powershellgallery.com/packages/Communary.Logger/1.1
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Date: 21.11.2014
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Version: 1.0
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#>
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try {
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# get current size of log file
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$currentSize = (Get-Item $LogFile).Length
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# get log name
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$logFileName = Split-Path $LogFile -Leaf
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$logFilePath = Split-Path $LogFile
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$logFileNameWithoutExtension = [System.IO.Path]::GetFileNameWithoutExtension($logFileName)
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$logFileNameExtension = [System.IO.Path]::GetExtension($logFileName)
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# if MaxLogFiles is 1 just keep the original one and let it grow
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if (-not($MaxLogFiles -eq 1)) {
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if ($currentSize -ge $MaxLogSize) {
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# construct name of archived log file
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$newLogFileName = $logFileNameWithoutExtension + (Get-Date -Format 'yyyyMMddHHmmss').ToString() + $logFileNameExtension
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# copy old log file to new using the archived name constructed above
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Copy-Item -Path $LogFile -Destination (Join-Path (Split-Path $LogFile) $newLogFileName)
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# Create a new log file
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try {
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Remove-Item -Path $LogFile -Force
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New-Item -ItemType File -Path $LogFile -Force
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#Set ACL for users on logfile
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$NewAcl = Get-Acl -Path $LogFile
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$identity = New-Object System.Security.Principal.SecurityIdentifier S-1-5-11
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$fileSystemRights = "Modify"
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$type = "Allow"
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$fileSystemAccessRuleArgumentList = $identity, $fileSystemRights, $type
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$fileSystemAccessRule = New-Object -TypeName System.Security.AccessControl.FileSystemAccessRule -ArgumentList $fileSystemAccessRuleArgumentList
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$NewAcl.SetAccessRule($fileSystemAccessRule)
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Set-Acl -Path $LogFile -AclObject $NewAcl
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}
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catch {
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Write-Log $_.Exception.Message
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}
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# if MaxLogFiles is 0 don't delete any old archived log files
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if (-not($MaxLogFiles -eq 0)) {
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# set filter to search for archived log files
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$archivedLogFileFilter = $logFileNameWithoutExtension + '??????????????' + $logFileNameExtension
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# get archived log files
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$oldLogFiles = Get-Item -Path "$(Join-Path -Path $logFilePath -ChildPath $archivedLogFileFilter)"
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if ([bool]$oldLogFiles) {
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# compare found log files to MaxLogFiles parameter of the log object, and delete oldest until we are
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# back to the correct number
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if (($oldLogFiles.Count + 1) -gt $MaxLogFiles) {
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[int]$numTooMany = (($oldLogFiles.Count) + 1) - $MaxLogFiles
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$oldLogFiles | Sort-Object 'LastWriteTime' | Select-Object -First $numTooMany | Remove-Item
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}
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}
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}
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Return $True
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}
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}
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}
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catch {
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Write-Log "`n`n##################################################`n# CHECK FOR LOG ROTATION - $(Get-Date -Format (Get-culture).DateTimeFormat.ShortDatePattern)`n##################################################"
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Write-Log $_.Exception.Message
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}
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}
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