functions/Get-DbaBackupInformation.ps1
|
function Get-DbaBackupInformation { <# .SYNOPSIS Restores a SQL Server Database from a set of backupfiles .DESCRIPTION Upon bein passed a list of potential backups files this command will scan the files, select those that contain SQL Server backup sets. It will then filter those files down to a set The function defaults to working on a remote instance. This means that all paths passed in must be relative to the remote instance. XpDirTree will be used to perform the file scans Various means can be used to pass in a list of files to be considered. The default is to non recursively scan the folder passed in. .PARAMETER Path Path to SQL Server backup files. Paths passed in as strings will be scanned using the desired method, default is a non recursive folder scan Accepts multiple paths seperated by ',' Or it can consist of FileInfo objects, such as the output of Get-ChildItem or Get-Item. This allows you to work with your own filestructures as needed .PARAMETER SqlInstance The SQL Server instance to be used to read the headers of the backup files .PARAMETER SqlCredential Allows you to login to servers using SQL Logins as opposed to Windows Auth/Integrated/Trusted. .PARAMETER DatabaseName An arrary of Database Names to filter by. If empty all databases are returned. .PARAMETER SourceInstance If provided only backup originating from this destination will be returned. This SQL instance will not be connected to or involved in this work .PARAMETER NoXpDirTree If this switch is set, then Files will be parsed as locally files. This can cause failures if the running user can see files that the parsing SQL Instance cannot .PARAMETER DirectoryRecurse If specified the specified directory will be recursed into (only applies if not using XpDirTree) .PARAMETER Anonymise If specified we will output the results with ComputerName, InstanceName, Database, UserName, and Paths hashed out This options is mainly for use if we need you to submit details for fault finding to the dbatools team .PARAMETER ExportPath If specified the ouput will export via CliXml format to the specified file. This allows you to store the backup history object for later usage, or move it between computers .PARAMETER NoClobber If specified will stop Export from overwriting an existing file, the default is to overwrite .PARAMETER PassThru When data is exported the cmdlet will return no other output, this switch means it will also return the normal output which can be then piped into another command .PARAMETER Import When specified along with a path the command will import a previously exported .PARAMETER EnableException Replaces user friendly yellow warnings with bloody red exceptions of doom! Use this if you want the function to throw terminating errors you want to catch. .PARAMETER Confirm Prompts to confirm certain actions .PARAMETER WhatIf Shows what would happen if the command would execute, but does not actually perform the command .EXAMPLE Get-DbaBackupInformation -SqlInstance Server1 -Path c:\backups\ -DirectoryRecurse Will use the Server1 instance to recursively read all backup files under c:\backups, and return a dbatool BackupHistory object .EXAMPLE Get-DbaBackupInformation -SqlInstance Server1 -Path c:\backups\ -DirectoryRecurse -ExportPath c:\store\BackupHistory.xml #Copy the file c:\store\BackupHistory.xml to another machine via preferred technique, and the on 2nd machine: Get-DbaBackupInformation -Import -Path c:\store\BackupHistory.xml | Restore-DbaDatabase -SqlInstance Server2 -TrustDbBackupHistory This allows you to move backup history across servers, or to preserve backuphistory even after the original server has been purged .EXAMPLE Get-DbaBackupInformation -SqlInstance Server1 -Path c:\backups\ -DirectoryRecurse -ExportPath c:\store\BackupHistory.xml -PassThru ! Restore-DbaDatabse -SqlInstance Server2 -TrustDbBackupHistory In this example we gather backup information, export it to an xml file, and then pass it on through to Restore-DbaDatabase This allows us to repeat the restore without having to scan all the backup files again .EXAMPLE Get-ChildItem c:\backups\ -recurse -files | Where {$_.extension -in ('.bak','.trn') -and $_.LastWriteTime -gt (get-date).AddMonths(-1)} | Get-DbaBackupInformation -SqlInstance Server1 -ExportPath c:\backupHistory.xml This lets you keep a record of all backup history from the last month on hand to speed up refreshes .EXAMPLE $Backups = Get-DbaBackupInformation -SqlInstance Server1 -Path \\network\backupps $Backups += Get-DbaBackupInformation -SqlInstance Server2 -NoXpDirTree -Path c:\backups Scan the unc folder \\network\backups with Server1, and then scan the C:\backups folder on Server2 not using xp_dirtree, adding the results to the first set. #> [CmdletBinding( DefaultParameterSetName="Create")] param ( [parameter(Mandatory = $true, ValueFromPipeline = $true)] [object[]]$Path, [parameter(Mandatory = $true,ParameterSetName="Create")] [Alias("ServerInstance", "SqlServer")] [DbaInstanceParameter]$SqlInstance, [parameter(ParameterSetName="Create")] [PSCredential][System.Management.Automation.CredentialAttribute()]$SqlCredential, [string[]]$DatabaseName, [string[]]$SourceInstance, [parameter(ParameterSetName="Create")] [Switch]$NoXpDirTree, [parameter(ParameterSetName="Create")] [switch]$DirectoryRecurse, [switch]$EnableException, [string]$ExportPath, [parameter(ParameterSetName="Import")] [switch]$Import, [switch][Alias('Anonymize')]$Anonymise, [Switch]$NoClobber, [Switch]$PassThru ) begin { Function Hash-String{ param( [String]$InString ) $StringBuilder = New-Object System.Text.StringBuilder [System.Security.Cryptography.HashAlgorithm]::Create("md5").ComputeHash([System.Text.Encoding]::UTF8.GetBytes($InString))| ForEach{ [Void]$StringBuilder.Append($_.ToString("x2")) } return $StringBuilder.ToString() } Write-Message -Level InternalComment -Message "Starting" Write-Message -Level Debug -Message "Parameters bound: $($PSBoundParameters.Keys -join ", ")" if (Test-Bound -ParameterName ExportPath){ if ($true -eq $NoClobber) { if (Test-Path $ExportPath){ Stop-Function -Message "$ExportPath exists and NoClobber set" return } } } if ($PSCmdlet.ParameterSetName -eq "Create"){ try { $server = Connect-SqlInstance -SqlInstance $SqlInstance -SqlCredential $SqlCredential } catch { Stop-Function -Message "Failure" -Category ConnectionError -ErrorRecord $_ -Target $instance -Continue return } } } process { if (Test-FunctionInterrupt) { return } if ((Test-Bound -Parameter Import) -and ($true -eq $Import)) { ForEach ($f in $Path){ if (Test-Path -Path $f){ $GroupResults += Import-CliXml -Path $f ForEach ($group in $GroupResults){ $Group.FirstLsn = [BigInt]$group.FirstLSN.ToString() $Group.CheckpointLSN = [BigInt]$group.CheckpointLSN.ToString() $Group.DatabaseBackupLsn = [BigInt]$group.DatabaseBackupLsn.ToString() $Group.LastLsn = [BigInt]$group.LastLsn.ToString() } } else { Write-Message -Message "$f does not exist or is unreadable" -Leve Warning } } } else { $Files = @() $groupResults = @() if ($NoXpDirTree -ne $true){ ForEach ($f in $path) { $Files += Get-XpDirTreeRestoreFile -Path $f -SqlInstance $SqlInstance -SqlCredential $SqlCredential } } else { ForEach ($f in $path) { $Files += Get-ChildItem -Path $f -file -Recurse:$recurse } } $FileDetails = $Files | Read-DbaBackupHeader -SqlInstance $SqlInstance -SqlCredential $sqlcredential $groupdetails = $FileDetails | group-object -Property BackupSetGUID Foreach ($Group in $GroupDetails){ $historyObject = New-Object Sqlcollaborative.Dbatools.Database.BackupHistory $historyObject.ComputerName = $group.group[0].MachineName $historyObject.InstanceName = $group.group[0].ServiceName $historyObject.SqlInstance = $group.group[0].ServerName $historyObject.Database = $group.Group[0].DatabaseName $historyObject.UserName = $group.Group[0].UserName $historyObject.Start = [DateTime]$group.Group[0].BackupStartDate $historyObject.End = [DateTime]$group.Group[0].BackupFinishDate $historyObject.Duration = ([DateTime]$group.Group[0].BackupFinishDate - [DateTime]$group.Group[0].BackupStartDate).Seconds $historyObject.Path = [string[]]$Group.Group.BackupPath $historyObject.FileList = ($group.Group.FileList | select-object type, logicalname, physicalname) $historyObject.TotalSize = (Measure-Object $Group.Group.BackupSizeMB -sum).sum $historyObject.Type = $group.Group[0].BackupTypeDescription $historyObject.BackupSetId = $group.group[0].BackupSetGUID $historyObject.DeviceType = 'Disk' $historyObject.FullName = $Group.Group.BackupPath $historyObject.Position = $group.Group[0].Position $historyObject.FirstLsn = $group.Group[0].FirstLSN $historyObject.DatabaseBackupLsn = $group.Group[0].DatabaseBackupLSN $historyObject.CheckpointLSN = $group.Group[0].CheckpointLSN $historyObject.LastLsn = $group.Group[0].LastLsn $historyObject.SoftwareVersionMajor = $group.Group[0].SoftwareVersionMajor $groupResults += $historyObject } } if (Test-Bound 'SourceInstance') { $groupResults = $groupResults | Where-Object {$_.InstanceName -in $SourceInstance} } if (Test-Bound 'DatabaseName') { $groupResults = $groupResults | Where-Object {$_.Database -in $DatabaseName} } if ($true -eq $Anonymise){ ForEach ($group in $GroupResults){ $group.ComputerName = Hash-String -InString $group.ComputerName $group.InstanceName = Hash-String -InString $group.InstanceName $group.SqlInstance = Hash-String -InString $group.SqlInstance $group.Database = Hash-String -InString $group.Database $group.UserName = Hash-String -InString $group.UserName $group.Path = Hash-String -InString $Group.Path $group.FullName = Hash-String -InString $Group.Fullname } } if ((Test-Bound -parameterName exportpath) -and $null -ne $ExportPath) { $groupResults | Export-CliXml -Path $ExportPath -Depth 5 -NoClobber:$NoClobber if ($true -ne $PassThru){ return } } $groupResults | Sort-Object -Property End -Descending } } |