Functions/Get-DacPacHash.ps1
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function Get-DacPacHash { [CmdletBinding()] [OutputType([String])] param ( [string]$dacpacPath, $rootPath ) [xml]$dacpacXml = New-Object xml $dacPacZipModelStream = $null $IsRootDacPac = $null -eq $rootPath try { if ($null -eq $rootpath){ $dacpacitem = (Get-Item $dacpacPath) $FulldacPacPath = $dacpacitem.FullName $rootpath = $dacpacitem.Directory } else{ $FulldacPacPath = Join-Path $rootPath $dacpacPath } Write-Verbose "getting DacPac hash for $FulldacPacPath" $Zip = [io.compression.zipfile]::OpenRead($FulldacPacPath) } catch [System.IO.FileNotFoundException], [System.Management.Automation.ItemNotFoundException] { throw "Can't open dacpac file $dacpacPath doesn't exist" } catch { $Ex = New-Object System.Exception ("Error reading dacpac $dacpacPath probably not a valid dacpac", $_.Exception) throw $ex } try { if (-not ($Zip.Entries.Name -eq "model.xml")) { Throw "Can't find the model.xml file in the dacpac, would guess this isn't a dacpac" } $dacPacZipModelStream = $Zip.GetEntry("model.xml").Open() $dacpacXml.Load($dacPacZipModelStream) $checksum = Get-ModelChecksum $dacpacXml; foreach ($dacpac in (Get-ReferencedDacpacsFromModel -modelxml $dacpacXml)) { $checksum += Get-DacPacHash -dacpacPath $dacpac -rootPath $rootPath } if ($IsRootDacPac) { $Zip.Entries | Where-Object { $_.Name -in ("predeploy.sql", "postdeploy.sql")} | ForEach-Object { $stream = $Zip.GetEntry($_.Name).open() $checksum += (Get-FileHash -InputStream $stream -Algorithm SHA256).Hash; $stream.Close(); $stream.Dispose(); } } } catch { Throw } finally { if ($null -ne $dacPacZipModelStream) { $dacPacZipModelStream.Close() $dacPacZipModelStream.Dispose() } if ($null -ne $Zip) { $Zip.Dispose() } } return $checksum } |