PSDeployScripts/FileSystemDiff.ps1
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<# .SYNOPSIS Deploy using Copy-Item for folder and file deployments checking for code differences .DESCRIPTION Deploy files using Copy-Item, but first check if the code in the destination file has changed since the last deployment. Scenarios: 1. File does not exist at destination: Copy from code control. Create a hash file. 2. File exists at destination, but no hash file: Copy from code control. Create a hash file. 3. File exists at destination, matching hash file: Copy from code control. Create a new hash file. 4. File exists at destination, hash file does not match: two scenario's here: a. SaveDiff not set: Show warning that destination file is different. Overwrite from code control. Create new hash file. b. SaveDiff set: Show warning. Rename destination file. Copy from code control. Create new hash file. .PARAMETER Deployment Deployment to run .PARAMETER SaveDiff If a difference between the target file, and the target files saved hash is different that means the target file was changed outside of code control. Use this option to save the file before overwriting it with the proper file from code control. #> [CmdletBinding()] Param ( [ValidateScript({ $_.PSObject.TypeNames[0] -eq 'PSDeploy.Deployment' })] [psobject[]]$Deployment, [switch]$SaveDiff ) Write-Verbose "Starting local deployment with $($Deployment.count) sources" #Local Deployment. Duplicate code. Sigh. ForEach ($Map in $Deployment) { If ($Map.SourceExists) { If ($Map.SourceType -eq "Directory") { $Files = Get-ChildItem $Map.Source -Recurse -File $Source = $Map.Source } Else { $Files = @(Get-ItemProperty $Map.Source) $Source = Split-Path -Path $Map.Source } ForEach ($File in $Files) { ForEach ($Target in $Map.Targets) { #Checking for file differences from last deploy and file currently at target $OldFilePath = Join-Path -Path ($File.DirectoryName.ToLower().Replace($Source.ToLower(),$Target.ToLower())) -ChildPath $File.Name $OldHashPath = Join-Path -Path ($File.DirectoryName.ToLower().Replace($Source.ToLower(),$Target.ToLower())) -ChildPath "$($File.Name).hash" $OldFileParent = Split-Path -Path $OldFilePath If (-not (Test-Path $OldFileParent)) { $null = New-Item -Path $OldFileParent -ItemType Directory } ElseIf (Test-Path $OldHashPath) { $OldHash = Import-Clixml -Path $OldHashPath $NewHash = Get-FileHash -Path $OldFilePath If ($OldHash.Hash -ne $NewHash.Hash) { Write-Warning "Difference was detected on target file $OldFilePath" If ($SaveDiff) { $SaveDiffPath = Join-Path -Path (Split-Path -Path $OldFilePath) -ChildPath "$($File.BaseName)-$(Get-Date -Format 'MM-dd-yyyy-HH-mm-ss')$($File.Extension)" Write-Verbose "Saving changed file as $SaveDiffPath" Rename-Item -Path $OldFilePath -NewName "$($File.BaseName)-$(Get-Date -Format 'MM-dd-yyyy-HH-mm-ss')$($File.Extension)" } } } #Deploying the file Write-Verbose "Deploying file '$($File.Name)' to '$Target'" $HashFilePath = Join-Path -Path (Split-Path -Path $OldFilePath) -ChildPath "$($File.Name).hash" Copy-Item -Path $File.FullName -Destination $OldFilePath -Force -Confirm:$false $Hash = [PSCustomObject]@{ Hash = Get-FileHash -Path $File.FullName | Select -ExpandProperty Hash File = $null #Get-Content $File.FullName #future proofing, not part of MVP } $Hash | Export-Clixml -Path $HashFilePath } } } } |