Private/Restore-HelmBackup.ps1
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function Restore-HelmBackup { param ( [string]$ManifestFilePath, # Path to the manifest file to restore [string]$Namespace, # Target namespace for the release [switch]$Verbose, # Enable verbose output [switch]$DryRun # Simulate the restore process without applying changes ) # Set verbose preference if ($Verbose) { $VerbosePreference = "Continue" } # Check if kubectl is installed if (!(Get-Command "kubectl")) { Write-Host "'kubectl' is not installed or not found in your system's PATH." -ForegroundColor Red Write-Host "Please install 'kubectl' before running Restore-HelmBackup." -ForegroundColor Red Write-Host "You can install 'kubectl' from: https://kubernetes.io/docs/tasks/tools/install/" -ForegroundColor Yellow return } # Validate the manifest file path if (-not (Test-Path $ManifestFilePath)) { Write-Host "Manifest file not found at path '$ManifestFilePath'." -ForegroundColor Red return } # Extract release name and timestamp from manifest file name $manifestFileName = [System.IO.Path]::GetFileNameWithoutExtension($ManifestFilePath) if ($manifestFileName -notmatch "^(?<releaseName>.+)_manifest_(?<timestamp>\d{4}-\d{2}-\d{2}_\d{2}-\d{2}-\d{2})$") { Write-Host "Invalid manifest file naming convention: '$manifestFileName'." -ForegroundColor Red return } $releaseName = $matches['releaseName'] $timestamp = $matches['timestamp'] # Locate corresponding backend files based on timestamp $backupDir = [System.IO.Path]::GetDirectoryName($ManifestFilePath) $backendFile = Get-ChildItem -Path $backupDir -Filter "${releaseName}_backend_${timestamp}.yaml" | Select-Object -First 1 # Log the files being used for restoration Write-Host "Using manifest file: $ManifestFilePath" -ForegroundColor Green if ($backendFile) { Write-Host "Using backend file: $($backendFile.FullName)" -ForegroundColor Green } else { Write-Host "No matching backend file found for release '$releaseName'." -ForegroundColor Yellow } # Check for namespace and create if needed if (-not $DryRun) { $namespaceCheck = kubectl get namespace $Namespace -o name if (-not $namespaceCheck) { Write-Verbose "Creating namespace '$Namespace'." kubectl create namespace $Namespace Write-Host "Namespace '$Namespace' created." -ForegroundColor Green } else { Write-Host "Namespace '$Namespace' exists." -ForegroundColor Green } } # Restore the manifest Write-Host "Restoring manifest for Helm release '$releaseName'..." -ForegroundColor Green if ($DryRun) { Write-Host "Dry run: Would apply manifest from file $ManifestFilePath." -ForegroundColor Yellow } else { $kubectlApplyCmd = "apply -f $ManifestFilePath" Write-Verbose "Running command: kubectl $kubectlApplyCmd" kubectl apply -f $ManifestFilePath Write-Host "Manifest for release '$releaseName' applied." -ForegroundColor Green } # Restore backend storage (if available) if ($backendFile) { Write-Host "Restoring backend storage for Helm release '$releaseName'..." -ForegroundColor Green if ($DryRun) { Write-Host "Dry run: Would apply backend storage from file $($backendFile.FullName)." -ForegroundColor Yellow } else { $kubectlApplyCmd = "apply -f $($backendFile.FullName)" Write-Verbose "Running command: kubectl $kubectlApplyCmd" kubectl apply -f $backendFile.FullName Write-Host "Backend storage for release '$releaseName' applied." -ForegroundColor Green } } Write-Host "Restore process for release '$releaseName' completed." -ForegroundColor Green } |