nginx logrotate on windows

nginx-logrotate-windows.ps1

# nginx folder
$nginxFolder = "D:\nginx\logs"

# keep log count
$keepLogCount = 7

# Maximum log file size in megabytes
$maxLogFileSizeMB = 10

# date format
$dateFormat = Get-Date -Format "yyyyMMdd"

# Define log types
$logTypes = @("access", "error")

foreach ($logType in $logTypes) {
  # define backup file name
  $backupBaseName = "$logType.log.$dateFormat"
  # get today's backup count in folder
  $logCount = (Get-ChildItem -Path $nginxFolder -Filter "$backupBaseName*" -File).Count + 1
  # get current log file
  $logFile = Get-ChildItem -Path $nginxFolder -Filter "$logType.log" -File

  # Check if file size exceeds the maximum size or if it's a new day
  if (($logFile.Length -gt ($maxLogFileSizeMB * 1MB)) -or ($logFile.LastWriteTime -lt (Get-Date).Date)) {
    # backup log, format as access.log.YYYYMMDD-count
    $logFile | Rename-Item -NewName { $_.Name -replace "$logType.log", "$backupBaseName-$logCount" }
    # get backup log file which name contain access or error
    $backupLogFiles = Get-ChildItem -Path $nginxFolder -Filter "$logType.log.*" -File
    # delete backup log which is older than keepLogCount
    $backupLogFiles | Where-Object { $_.LastWriteTime -lt (Get-Date).AddDays(-$keepLogCount) } | Remove-Item
  }
}

# reopen nginx service, need run as adminstrator
Restart-Service -Name nginx