Rotate Logs

RotateLogs.psi

<#    
 
Public Domain License
Modified by kingbain
 
.SYNOPSIS
Clean up and rotate files
 
.DESCRIPTION
This script rotates files and keeps them in three directories
\daily
\weekly
\monthly
 
New files are expected to be written to $LogDir and Rotate-Logs moves them into subdirectories
 
.EXAMPLE
Rotate-Logs -LogDir "c:\MyLogDirectory"
 
.LINKS
http://www.getsurreal.com/powershell/powershell-file-rotation
#>
 
Param (
	[Parameter(ValueFromPipeline=$false)]
	[string]$LogDir = "C:\Apache24\logs", # Directory log files are written to
	[Parameter(ValueFromPipeline=$false)]
	[int]$DayOfWeek = 2, # The day of the week to store for weekly files (1 to 7 where 1 is Sunday)
	[Parameter(ValueFromPipeline=$false)]
	[int]$DayOfMonth = 1, # The day of the month to store for monthly files (Max = 28 since varying last day of month not currently handled)
	[Parameter(ValueFromPipeline=$false)]
	[int]$RotationDaily = 7, # The number of daily files to keep
	[Parameter(ValueFromPipeline=$false)]
	[int]$RotationWeekly = 6, # The number of weekly files to keep
	[Parameter(ValueFromPipeline=$false)]
	[int]$RotationMonthly = 5, # The number of monthly files to keep
	[Parameter(ValueFromPipeline=$false)]
	[string]$LogFileRegEx = ".*" # The number of monthly files to keep
)
 
Process {
	if (-not $LogDir) {
		Write-Host "Error:  -LogDir not set"
		Exit
    }
 
    $date = get-Date
 
    $verify_log_dir = Test-Path $LogDir
    if ($verify_log_dir) {
        $verify_daily_dir = Test-Path "$LogDir\daily"
        $verify_weekly_dir = Test-Path "$LogDir\weekly"
        $verify_monthly_dir = Test-Path "$LogDir\monthly"
 
        # If the daily directory does not exist try to create it
        if (!$verify_daily_dir) {
            $md_daily = md -Name "daily" -Path $LogDir
            if (!$md_daily){
                Write-Host "Error setting up log directories. Check Permissions."
                exit
            }
        }
        # If the weekly directory does not exist try to create it
        if (!$verify_weekly_dir) {
            $md_weekly = md -Name "weekly" -Path $LogDir
            if (!$md_weekly){
                Write-Host "Error setting up log directories. Check Permissions."
                exit
            }
        }
        # If the monthly directory does not exist try to create it
        if (!$verify_monthly_dir) {
            $md_monthly = md -Name "monthly" -Path $LogDir
            if (!$md_monthly){
                Write-Host "Error setting up log directories. Check Permissions."
                exit
            }
        }
    }
    else {
        Write-Host "Error:  Log directory $LogDir does not exist."
        exit
    }

    $logs_root = Get-ChildItem $LogDir | where {$_.Attributes -ne "Directory" -and $_.Name -match $logfileRegEx}

     
    if ($logs_root) {
        foreach ($file in $logs_root) {
            $file_date = $file.LastWriteTime
            $file_age = New-TimeSpan -Start $file_date -end $date

            if ($file_age.TotalDays -ge 1){

                if ($file_date -ge $date.AddDays(-$RotationDaily)) {
                   # Write-Host "$($file.Name) - $($file_date)"
                    Copy-Item "$LogDir\$file" "$LogDir\daily" 
                }
                if ($file_date -ge $date.AddDays(-$RotationWeekly*7) -and [int]$file_date.DayOfWeek -eq $DayOfWeek) {
                    #Write-Host "Weekly $($file.Name) - $($file_date)"
                    Copy-Item "$LogDir\$file" "$LogDir\weekly" 
                }
                if ($file_date -ge $date.AddDays(-$RotationMonthly*30) -and [int]$file_date.Day -eq $DayOfMonth) {
                    #Write-Host "Monthly $($file.Name) - $($file_date) $([int]$file_date.DayOfWeek)"
                    Copy-Item "$LogDir\$file" "$LogDir\monthly" 
                }
                Remove-Item "$LogDir\$file" -Force
            }

            
        $logs_daily = Get-ChildItem "$LogDir\daily" | where {$_.Attributes -ne "Directory"} | Sort-Object LastWriteTime -Descending
        $logs_weekly = Get-ChildItem "$LogDir\weekly" | where {$_.Attributes -ne "Directory"}
        $logs_monthly = Get-ChildItem "$LogDir\monthly" | where {$_.Attributes -ne "Directory"}
 
        if ($logs_daily) {
            foreach ($file in $logs_daily) {
                $file_date = get-date $file.LastWriteTime
                if ($file_date -le $date.AddDays(-$RotationDaily)) {
                    #Write-Host "$file.Name"
                    Remove-Item "$LogDir\daily\$file" -Force                   
                }
            }
        }
 
        if ($logs_weekly) {
            foreach ($file in $logs_weekly) {
                $file_date = get-date $file.LastWriteTime
                if ($file_date -le $date.AddDays(-$RotationWeekly*7)) {
                    #Write-Host "$file.Name"
                    Remove-Item "$LogDir\weekly\$file" -Force
                }
            }
        }
 
        if ($logs_monthly) {
            foreach ($file in $logs_monthly) {
                $file_date = get-date $file.LastWriteTime
                if ($file_date -le $date.AddDays(-$RotationMonthly*30)) {
                    #Write-Host "$file.Name"
                    Remove-Item "$LogDir\monthly\$file" -Force
                }
            }
        }






        }
    }
}