functions/Test-DbaPath.ps1
function Test-DbaPath { <# .SYNOPSIS Tests if file or directory exists from the perspective of the SQL Server service account. .DESCRIPTION Uses master.dbo.xp_fileexist to determine if a file or directory exists. .PARAMETER SqlInstance The SQL Server you want to run the test on. .PARAMETER SqlCredential Login to the target instance using alternative credentials. Accepts PowerShell credentials (Get-Credential). Windows Authentication, SQL Server Authentication, Active Directory - Password, and Active Directory - Integrated are all supported. For MFA support, please use Connect-DbaInstance. .PARAMETER Path The Path to test. This can be a file or directory .PARAMETER EnableException By default, when something goes wrong we try to catch it, interpret it and give you a friendly warning message. This avoids overwhelming you with "sea of red" exceptions, but is inconvenient because it basically disables advanced scripting. Using this switch turns this "nice by default" feature off and enables you to catch exceptions with your own try/catch. .NOTES Tags: Path, ServiceAccount Author: Chrissy LeMaire (@cl), netnerds.net Website: https://dbatools.io Copyright: (c) 2018 by dbatools, licensed under MIT License: MIT https://opensource.org/licenses/MIT .LINK https://dbatools.io/Test-DbaPath .EXAMPLE PS C:\> Test-DbaPath -SqlInstance sqlcluster -Path L:\MSAS12.MSSQLSERVER\OLAP Tests whether the service account running the "sqlcluster" SQL Server instance can access L:\MSAS12.MSSQLSERVER\OLAP. Logs into sqlcluster using Windows credentials. .EXAMPLE PS C:\> $credential = Get-Credential PS C:\> Test-DbaPath -SqlInstance sqlcluster -SqlCredential $credential -Path L:\MSAS12.MSSQLSERVER\OLAP Tests whether the service account running the "sqlcluster" SQL Server instance can access L:\MSAS12.MSSQLSERVER\OLAP. Logs into sqlcluster using SQL authentication. #> [CmdletBinding()] [Diagnostics.CodeAnalysis.SuppressMessageAttribute("PSUseOutputTypeCorrectly", "", Justification = "PSSA Rule Ignored by BOH")] param ( [parameter(Mandatory, ValueFromPipeline)] [DbaInstanceParameter[]]$SqlInstance, [PSCredential]$SqlCredential, [Parameter(Mandatory)] [object]$Path, [switch]$EnableException ) process { foreach ($instance in $SqlInstance) { try { $server = Connect-SqlInstance -SqlInstance $instance -SqlCredential $SqlCredential } catch { Stop-Function -Message "Error occurred while establishing connection to $instance" -Category ConnectionError -ErrorRecord $_ -Target $instance -Continue } $counter = [pscustomobject] @{ Value = 0 } $groupSize = 100 $RawPath = $Path $Path = [string[]]$Path $groups = $Path | Group-Object -Property { [math]::Floor($counter.Value++ / $groupSize) } foreach ($g in $groups) { $PathsBatch = $g.Group $query = @() foreach ($p in $PathsBatch) { $query += "EXEC master.dbo.xp_fileexist '$p'" } $sql = $query -join ';' $batchresult = $server.ConnectionContext.ExecuteWithResults($sql) if ($Path.Count -eq 1 -and $SqlInstance.Count -eq 1 -and (-not($RawPath -is [array]))) { if ($batchresult.Tables.rows[0] -eq $true -or $batchresult.Tables.rows[1] -eq $true) { return $true } else { return $false } } else { $i = 0 foreach ($r in $batchresult.tables.rows) { $DoesPass = $r[0] -eq $true -or $r[1] -eq $true [pscustomobject]@{ SqlInstance = $server.Name InstanceName = $server.ServiceName ComputerName = $server.ComputerName FilePath = $PathsBatch[$i] FileExists = $DoesPass IsContainer = $r[1] -eq $true } $i += 1 } } } } } } # 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