Test-GitOpsDrift.ps1
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Function Test-GitOpsDrift { <# .SYNOPSIS Checks the Source Directory's Git Diff and uses that information to help determine drift in the Destination Directory. .DESCRIPTION Run Git Diff on the Source Directory then determines each file's Build Directory representation. Checks the Hash of the file in the Build Directory against the Destination Directory and, based on the Git Diff, writes a warning if the hashes don't match when they should, or match when they shouldn't, or don't exist when they should, or exist when they shouldn't. .PARAMETER Build The Directory which holds the built representations of the Source Directory. .PARAMETER Source The Directory which holds the source. .PARAMETER Destination The Directory which holds the built represenations as they exist on the target system. Use PSDrive to map remote systems. .PARAMETER GitTag Used in the Git Diff call. Not currently implemented as it is not supported in Deploy-GitOpsBuild. .PARAMETER Exclude Regex which determines files that should be skipped. .PARAMETER TemplateExtension The extension of template files, used to determine the name of the built representation. .PARAMETER SpectoCommon The string that indicates that a file is intended to be Specific To (SpecTo) a system. .PARAMETER SpectoSignature The string that indicates that a specto file is to be copied in this run. #> param( [ValidateScript( { Test-Path $_ -PathType Container })] [Parameter()] [String] $Build = $env:TEMP, [ValidateScript( { Test-Path $_ -PathType Container })] [Parameter(Mandatory = $true)] [String] $Source, [Parameter(Mandatory = $true)] [String] $Destination, # [Parameter()] # [String] # $GitTag, [Parameter()] [Regex] $Exclude = '^.*\.md$', [Parameter()] [String] $TemplateExtension = ".eps1", [Parameter()] [String] $SpectoCommon = ".specto", [Parameter()] [String] $SpectoSignature ) Process { If (-not $(Test-Path $Destination)) { Write-Error "$Destination directory not found." } $SourceDirectory = Get-Item $Source Write-Debug "$($SourceDirectory.FullName)" $BuildDirectory = Get-Item $Build $DestinationDirectory = Get-Item $Destination Push-Location $SourceDirectory Try { $GitSrcFiles = @{} If ($PSBoundParameters['GitTag']) { git diff --relative --name-status $GitTag HEAD ` | Tee-Object -Variable GitStatusCmdOutput ` | Write-Debug } Else { git diff --relative --name-status HEAD^ HEAD ` | Tee-Object -Variable GitStatusCmdOutput ` | Write-Debug } ForEach ($Line in $GitStatusCmdOutput) { $GitStatusArray = $Line.Split("`t") Write-Debug $GitStatusArray.Count If ($GitStatusArray.Count -eq 3) { $GitSrcFileInfo = [System.IO.FileInfo](Join-Path $SourceDirectory $GitStatusArray[2]) $GitSrcFile = $GitSrcFileInfo.FullName.Replace("$($SourceDirectory.FullName)", "") $GitSrcFromFileInfo = [System.IO.FileInfo](Join-Path $SourceDirectory $GitStatusArray[1]) $GitSrcFromFile = $GitSrcFromFileInfo.FullName.Replace("$($SourceDirectory.FullName)", "") $GitSrcFiles["$GitSrcFile"] = @{ FullName = $GitSrcFileInfo.FullName Parent = $GitSrcFileInfo.DirectoryName FromFile = $GitSrcFromFile GitStatus = $GitStatusArray[0] } } ElseIf ($GitStatusArray.Count -eq 2) { $GitSrcFileInfo = [System.IO.FileInfo](Join-Path $SourceDirectory $GitStatusArray[1]) Write-Debug "$($GitSrcFileInfo | Select-Object -Property *)" $GitSrcFile = $GitSrcFileInfo.FullName.Replace("$($SourceDirectory.FullName)", "") $GitSrcFiles["$GitSrcFile"] = @{ FullName = $GitSrcFileInfo.FullName Parent = $GitSrcFileInfo.DirectoryName FromFile = $GitSrcFile GitStatus = $GitStatusArray[0] } } } Write-Debug "$($GitSrcFiles | ConvertTo-Json -Depth 100)" ForEach ($File in $($GitSrcFiles.GetEnumerator())) { If ($Exclude -and ($File.Key -match $Exclude)) { Write-Verbose "$($File.Key) Excluded" Continue } $BuildFile = @{ FullName = Join-Path -Path $BuildDirectory.FullName -ChildPath $File.Key Directory = Join-Path -Path $BuildDirectory.FullName -ChildPath $File.Value.Parent.Replace("$($SourceDirectory.FullName)", "") } $DestinationFile = @{ FullName = Join-Path -Path $DestinationDirectory.FullName -ChildPath $File.Key Directory = Join-Path -Path $DestinationDirectory.FullName -ChildPath $File.Value.Parent.Replace("$($SourceDirectory.FullName)", "") } If ($File.Key.EndsWith($TemplateExtension)) { $BuildFile.FullName = $BuildFile.FullName.Replace($TemplateExtension, "") $DestinationFile.FullName = $DestinationFile.FullName.Replace($TemplateExtension, "") } ElseIf ($File.Key.Contains($SpectoCommon)) { If ($SpectoSignature -and ($File.Key.EndsWith($SpectoSignature))) { $BuildFile.FullName = $BuildFile.FullName.Replace($SpectoCommon, "").Replace($SpectoSignature, "") $DestinationFile.FullName = $DestinationFile.FullName.Replace($SpectoCommon, "").Replace($SpectoSignature, "") } Else { Continue } } $BuildFileHash = Get-FileHash $BuildFile.FullName -ErrorAction SilentlyContinue $DestinationFileHash = Get-FileHash $DestinationFile.FullName -ErrorAction SilentlyContinue Switch ($File.Value.GitStatus) { 'A' { # addition of a file Write-Verbose "$($File.Key) was Added since last build, $($DestinationFile.FullName) hash should be null." If ($null -ne $DestinationFilehash) { Write-Warning "$($File.Key) was added but $($DestinationFile.FullName) already exists." } Break } 'D' { # deletion of a file Write-Warning "$($File.Key) was Deleted since last build, consider deleting $($DestinationFile.FullName)." Break } 'M' { # modification of the contents or mode of a file Write-Warning "$($File.Key) was Modified since last build, $($DestinationFile.FullName) shoudl be different than Source and overwritten." If ($null -eq $DestinationFilehash) { Write-Warning "$($File.Key) was Modified but $($DestinationFile.FullName) was not found." } ElseIf ($BuildFileHash.Hash -eq $DestinationFileHash.Hash) { Write-Warning "$($File.Key) was Modified but $($DestinationFile.FullName) matches the hash of the $($Buildfile.FullName) file. File may have already been deployed." } Break } 'R' { # renaming of a file Write-Verbose "$($File.Key) has been renamed from $($File.Value.FromFile). $($DestinationFile.FullName) should not exist. Any file generated from $($Destination.FullName) should be considered for deletion." If ($null -ne $DestinationFileHash) { Write-Warning "$($File.Key) was renamed from $($File.Value.FromFile), but $($DestinationFile.FullName) already exists." } Write-Warning "$($File.Key) was renamed from $($File.Value.FromFile). Consider deleting any file that was generated from $($File.Value.FromFile)." } Default { # Default Write-Warning "$($File.Key) has a status of $($File.Value.GitStatus), which is not handled." } } } ForEach ($SourceFile in $(Get-ChildItem $SourceDirectory.FullName -Recurse -File)) { If ($Exclude -and ($SourceFile.FullName -match $Exclude)) { Write-Verbose "$($SourceFile.FullName) Excluded" Continue } $SourceFileRelPath = $SourceFile.FullName.Replace($SourceDirectory.FullName, "") If ($GitSrcFiles.ContainsKey($SourceFileRelPath)) { Write-Verbose "$SourceFileRelPath was already checked during Git Diff handling." Continue } $BuildFile = @{ FullName = Join-Path -Path $BuildDirectory.FullName -ChildPath $SourceFile.FullName.Replace($SourceDirectory.FullName, "") Directory = Join-Path -Path $BuildDirectory.FullName -ChildPath $SourceFile.Directory.FullName.Replace($SourceDirectory.FullName, "") } $DestinationFile = @{ FullName = Join-Path -Path $DestinationDirectory.FullName -ChildPath $SourceFile.FullName.Replace($SourceDirectory.FullName, "") Directory = Join-Path -Path $DestinationDirectory.FullName -ChildPath $SourceFile.Directory.FullName.Replace($SourceDirectory.FullName, "") } If ($SourceFile.Name.EndsWith($TemplateExtension)) { $BuildFile.FullName = $BuildFile.FullName.Replace($TemplateExtension, "") $DestinationFile.FullName = $DestinationFile.FullName.Replace($TemplateExtension, "") } ElseIf ($SourceFile.Name.Contains($SpectoCommon)) { If ($SpectoSignature -and ($SourceFile.Name.EndsWith($SpectoSignature))) { $BuildFile.FullName = $BuildFile.FullName.Replace($SpectoCommon, "").Replace($SpectoSignature, "") $DestinationFile.FullName = $DestinationFile.FullName.Replace($SpectoCommon, "").Replace($SpectoSignature, "") } Else { Continue } } $BuildFileHash = Get-FileHash $BuildFile.FullName $DestinationFileHash = Get-FileHash $DestinationFile.FullName -ErrorAction SilentlyContinue Write-Verbose "$SourceFileRelPath has no changes since the last build. $($BuildFile.FullName) should match $($DestinationFile.FullName)." If ($null -eq $DestinationFileHash) { Write-Warning "$SourceFileRelPath has no changes since the last build. $($DesinationFile.FullName) was not found." } ElseIf ($($DestinationFileHash.Hash) -ne $($BuildFileHash.Hash)) { Write-Warning "$SourceFileRelPath has no changes since the last build. $($BuildFile.FullName) does not match $($DestinationFile.FullName)." } } } Finally { Pop-Location } } } |