# Number of backups to keep, set to 0 to keep all backups
$configRotate = 7
+# Directory where to store the logfiles
+$configLogDir = "log"
+# Number of logfiles to keep, set to 0 to keep all logfiles
+# You should set this to at least the same as $configRotate
+$configLogRotate = 7
+
# Databases to backup, leave empty to backup all databases
$configDbBackup = @()
# If $configDbBackup is empty, don't backup the databases defined here
# End of config
+<#
+.Synopsis
+ Write-Log writes a message to a specified log file with the current time stamp.
+.DESCRIPTION
+ The Write-Log function is designed to add logging capability to other scripts.
+ In addition to writing output and/or verbose you can write to a log file for
+ later debugging.
+.NOTES
+ Created by: Jason Wasser @wasserja
+ Modified: 11/24/2015 09:30:19 AM
+
+ Changelog:
+ * Code simplification and clarification - thanks to @juneb_get_help
+ * Added documentation.
+ * Renamed LogPath parameter to Path to keep it standard - thanks to @JeffHicks
+ * Revised the Force switch to work as it should - thanks to @JeffHicks
+
+ To Do:
+ * Add error handling if trying to create a log file in a inaccessible location.
+ * Add ability to write $Message to $Verbose or $Error pipelines to eliminate
+ duplicates.
+.PARAMETER Message
+ Message is the content that you wish to add to the log file.
+.PARAMETER Path
+ The path to the log file to which you would like to write. By default the function will
+ create the path and file if it does not exist.
+.PARAMETER Level
+ Specify the criticality of the log information being written to the log (i.e. Error, Warning, Informational)
+.PARAMETER NoClobber
+ Use NoClobber if you do not wish to overwrite an existing file.
+.EXAMPLE
+ Write-Log -Message 'Log message'
+ Writes the message to c:\Logs\PowerShellLog.log.
+.EXAMPLE
+ Write-Log -Message 'Restarting Server.' -Path c:\Logs\Scriptoutput.log
+ Writes the content to the specified log file and creates the path and file specified.
+.EXAMPLE
+ Write-Log -Message 'Folder does not exist.' -Path c:\Logs\Script.log -Level Error
+ Writes the message to the specified log file as an error message, and writes the message to the error pipeline.
+.LINK
+ https://gallery.technet.microsoft.com/scriptcenter/Write-Log-PowerShell-999c32d0
+#>
+function Write-Log
+{
+ [CmdletBinding()]
+ Param
+ (
+ [Parameter(Mandatory=$true,
+ ValueFromPipelineByPropertyName=$true)]
+ [ValidateNotNullOrEmpty()]
+ [Alias("LogContent")]
+ [string]$Message,
+
+ [Parameter(Mandatory=$false)]
+ [Alias('LogPath')]
+ [string]$Path='C:\Logs\PowerShellLog.log',
+
+ [Parameter(Mandatory=$false)]
+ [ValidateSet("Error","Warn","Info")]
+ [string]$Level="Info",
+
+ [Parameter(Mandatory=$false)]
+ [switch]$NoClobber
+ )
+
+ Begin
+ {
+ # Set VerbosePreference to Continue so that verbose messages are displayed.
+ $VerbosePreference = 'Continue'
+ }
+ Process
+ {
+
+ # If the file already exists and NoClobber was specified, do not write to the log.
+ if ((Test-Path $Path) -AND $NoClobber) {
+ Write-Error "Log file $Path already exists, and you specified NoClobber. Either delete the file or specify a different name."
+ Return
+ }
+
+ # If attempting to write to a log file in a folder/path that doesn't exist create the file including the path.
+ elseif (!(Test-Path $Path)) {
+ Write-Verbose "Creating $Path."
+ $NewLogFile = New-Item $Path -Force -ItemType File
+ }
+
+ else {
+ # Nothing to see here yet.
+ }
+
+ # Format Date for our Log File
+ $FormattedDate = Get-Date -Format "yyyy-MM-dd HH:mm:ss"
+
+ # Write message to error, warning, or verbose pipeline and specify $LevelText
+ switch ($Level) {
+ 'Error' {
+ Write-Error $Message
+ $LevelText = 'ERROR:'
+ }
+ 'Warn' {
+ Write-Warning $Message
+ $LevelText = 'WARNING:'
+ }
+ 'Info' {
+ Write-Verbose $Message
+ $LevelText = 'INFO:'
+ }
+ }
+
+ # Write log entry to $Path
+ "$FormattedDate $LevelText $Message" | Out-File -FilePath $Path -Append
+ }
+ End
+ {
+ }
+}
+
function Get-Databases() {
$databaseString = (& $configMysqlCli --host=$configMysqlHost --port=$configMysqlPort --user=$configMysqlUser --password=$configMysqlPassword --batch --skip-column-names -e "SHOW DATABASES;")
throw "mysqldump exited with Exit code $LastExitCode"
}
}
+function Invoke-FileRotation {
+ Param (
+ $Dir,
+ $MaxFiles,
+ [Parameter(Mandatory=$false)]
+ $Pattern,
+ [Parameter(Mandatory=$false)]
+ $LogFile
+ )
-function Rotate-Backups($backupDir) {
- if($configRotate -le 0) {
+ if($MaxFiles -le 0) {
return
}
-
- $keepBackupsCount = $configRotate
- Get-ChildItem $backupDir -File | Where-Object {($_.Name -match "^backup-.+-\d{8,}-\d{6}\.sql$")} | Sort-Object -Descending |
+ $keepFilesCount = $MaxFiles
+
+ Get-ChildItem $Dir -File | Where-Object {($null -eq $Pattern -or $_.Name -match $Pattern)} | Sort-Object -Descending |
Foreach-Object {
- if($keepBackupsCount -ge 0) {
- $keepBackupsCount--
+ if($keepFilesCount -ge 0) {
+ $keepFilesCount--
}
- if($keepBackupsCount -eq -1) {
- Write-Output "Deleting backup $($_.FullName)"
+ if($keepFilesCount -eq -1) {
+ Write-Output "Deleting file $($_.FullName)"
+
+ if($null -ne $LogFile) {
+ Write-Log "Deleting file $($_.FullName)" -Path $LogFile
+ }
+
Remove-Item -Force $_.FullName
}
}
$currDaytime = Get-Date -format "yyyyMMdd-HHmmss"
+$logFile = "$configLogDir\log-$currDaytime.log"
+
+$startTime = Get-Date -format "yyyy-MM-dd HH:mm:ss"
+Write-Log "Started at $startTime" -Path $logFile
+
# Get a list of all databases
try {
$databases = Get-Databases | Where-Object {!($_ -in $defaultDbExclude)}
}
catch {
+ Write-Log "Failed to get list of databases" -Path $logFile -Level Error
+ Write-Log $_ -Path $logFile -Level Error
+ Write-Log "Exiting" -Path $logFile -Level Error
+
Write-Output "Failed to get list of databases"
Write-Output $_
+
exit 1
}
$databasesToBackup += $cDb
}
else {
+ Write-Log "Not backing up database $cDb, because it does not exist" -Path $logFile -Level Warn
Write-Warning "Not backing up database $cDb, because it does not exist"
}
}
New-Item -ItemType directory -Path "$databaseBackupDir" -ErrorAction Stop | Out-Null
}
catch {
+ Write-Log "Failed to create directory $databaseBackupDir" -Path $logFile -Level Error
+ Write-Log $_ -Path $logFile -Level Error
+ Write-Log "Exiting" -Path $logFile -Level Error
+
Write-Output "Failed to create directory $databaseBackupDir"
Write-Output $_
+
exit 1
}
}
$databaseBackupFile = Join-Path -Path $databaseBackupDir -ChildPath "backup-$d-$currDaytime.sql"
+
+ Write-Log "Backing up $d to $databaseBackupFile..." -Path $logFile
Write-Output "Backing up $d to $databaseBackupFile..."
try {
Create-Backup $d $databaseBackupFile
- Rotate-Backups $databaseBackupDir
+ Invoke-FileRotation -Dir $databaseBackupDir -MaxFiles $configRotate -Pattern "^backup-.+-\d{8,}-\d{6}\.sql$" -LogFile $logFile
}
catch {
+ Write-Log "Could not backup database $d to $databaseBackupFile" -Path $logFile -Level Error
+ Write-Log $_ -Path $logFile -Level Error
+
Write-Output "Could not backup database $d to $databaseBackupFile"
Write-Output $_
}
-}
\ No newline at end of file
+}
+
+Invoke-FileRotation -Dir $configLogDir -MaxFiles $configLogRotate -Pattern "^log-\d{8,}-\d{6}\.log$" -LogFile $logFile
+
+$endTime = Get-Date -format "yyyy-MM-dd HH:mm:ss"
+Write-Log "Ended at $endTime" -Path $logFile
\ No newline at end of file
git.p6c8.net / psmysqlbackup.git / blobdiff