Added rotation of backups

[psmysqlbackup.git] / psmysqlbackup.ps1

diff --git a/psmysqlbackup.ps1 b/psmysqlbackup.ps1
index 7ca585a28afe40a4736aae1ba3fbe79360883103..77ba6790f889e2930798b4629b068b0163a65671 100644 (file)
--- a/psmysqlbackup.ps1
+++ b/psmysqlbackup.ps1
@@ -6,7 +6,7 @@
 [String]$configMysqldumpCli = "C:\Program Files\MariaDB 10.5\bin\mysqldump.exe"
 
 [String]$configBackupDir = "backup"
-[String]$configRotate = 7
+[Int32]$configRotate = 7
 
 function Get-Databases() {
     $databaseString = (& $configMysqlCli --host=$configMysqlHost --user=$configMysqlUser --password=$configMysqlPassword --batch --skip-column-names -e "SHOW DATABASES;")
@@ -19,6 +19,26 @@ function Create-Backup([String]$database, [String]$target) {
     & $configMysqldumpCli --host=$configMysqlHost --user=$configMysqlUser --password=$configMysqlPassword --single-transaction --result-file=$target $database
 }
 
+function Rotate-Backups($backupDir) {
+    if($configRotate -le 0) {
+               return
+       }
+       
+       $keepBackupsCount = $configRotate
+       
+       Get-ChildItem $backupDir -File | Where-Object {($_.Name -match "^backup-.+-\d{8,}-\d{6}\.sql$")} | Sort-Object -Descending |
+       Foreach-Object {
+               if($keepBackupsCount -ge 0) {
+                       $keepBackupsCount--
+               }
+               
+               if($keepBackupsCount -eq -1) {
+                       Write-Output "Deleting backup $($_.FullName)"
+                       Remove-Item -Force $_.FullName
+               }
+       }
+}
+
 $currDaytime = Get-Date -format "yyyyMMdd-HHmmss"
 
 $databases = Get-Databases | Where-Object { $_ -ne "information_schema" -and $_ -ne "performance_schema"}
@@ -33,4 +53,5 @@ foreach($d in $databases) {
     $databaseBackupFile = Join-Path -Path $databaseBackupDir -ChildPath "backup-$d-$currDaytime.sql"
     Write-Output "Backing up $d to $databaseBackupFile..."
     Create-Backup $d $databaseBackupFile
+    Rotate-Backups $databaseBackupDir
 }
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