KubeSnapIt.psm1
|
#!/usr/bin/env pwsh # MARKER: NEW PARAM BLOCK # Dot Source all functions in all ps1 files located in this module # Define the path to the local Private directory and Krew storage directory for KubeSnapIt $localPrivateDir = "$PSScriptRoot\Private" # Local Private directory $krewStorageDir = "$HOME/.krew/store/KubeSnapIt" # Krew storage directory # Check if the local Private directory exists if (Test-Path -Path $localPrivateDir) { Write-Verbose "Executing scripts from local Private directory." # Get all .ps1 files in the local Private directory $localScripts = Get-ChildItem -Path "$localPrivateDir/*.ps1" 2>$null # Execute each .ps1 script found in the local Private directory foreach ($script in $localScripts) { Write-Verbose "Executing script: $($script.FullName)" . $script.FullName # Call the script } } else { Write-Verbose "Local Private directory not found, checking Krew storage." # Check if the KubeSnapIt storage directory exists if (Test-Path -Path $krewStorageDir) { Write-Verbose "Checking for available versions in $krewStorageDir." # Get all version directories (assuming they follow a vX.X.X naming pattern) $versionDirs = Get-ChildItem -Path $krewStorageDir -Directory | Where-Object { $_.Name -match '^v\d+\.\d+\.\d+$' } # Check if any version directories were found if ($versionDirs) { # Get the latest version directory based on the version number $latestVersionDir = $versionDirs | Sort-Object { [Version]$_.Name.Substring(1) } -Descending | Select-Object -First 1 Write-Verbose "Latest version found: $($latestVersionDir.Name)" # Construct the path to the Private directory for the latest version $kubePrivateDir = Join-Path -Path $latestVersionDir.FullName -ChildPath "Private" # Check if the Private directory exists in the latest version if (Test-Path -Path $kubePrivateDir) { # Get all .ps1 files in the Private directory $scripts = Get-ChildItem -Path "$kubePrivateDir/*.ps1" 2>$null # Execute each .ps1 script found foreach ($script in $scripts) { Write-Verbose "Executing script: $($script.FullName)" . $script.FullName # Call the script } } else { Write-Error "No Private directory found for the latest version: $($latestVersionDir.Name). Exiting." exit 1 } } else { Write-Error "No version directories found in $krewStorageDir. Exiting." exit 1 } } else { Write-Error "Krew storage directory for KubeSnapIt not found. Exiting." exit 1 } } function Invoke-KubeSnapIt { # START PARAM BLOCK [CmdletBinding()] param ( [string]$Namespace = "", [string]$OutputPath = "./snapshots", [string]$InputPath = "", [string]$ComparePath = "", [switch]$AllNamespaces, [string]$Labels = "", [string]$Objects = "", [switch]$DryRun, [switch]$Restore, [switch]$CompareWithCluster, # Switch for comparing with the cluster [switch]$CompareSnapshots, # Switch for comparing two snapshots [switch]$Force, [Alias("h")] [switch]$Help ) # END PARAM BLOCK # Display help message if the Help switch is used if ($Help) { Write-Host "" Write-Host "KubeSnapIt Parameters:" Write-Host " -Namespace Specify the Kubernetes namespace to take a snapshot from." Write-Host " -OutputPath Path to save the snapshot files." Write-Host " -InputPath Path to restore snapshots from or the first snapshot for comparison." Write-Host " -ComparePath Path to the second snapshot for comparison (optional)." Write-Host " -AllNamespaces Capture all namespaces. If this is provided, -Namespace will be ignored." Write-Host " -Labels Specify labels to filter Kubernetes objects (e.g., app=nginx)." Write-Host " -Objects Comma-separated list of specific objects in the kind/name format (e.g., pod/my-pod, deployment/my-deployment)." Write-Host " -DryRun Simulate taking or restoring the snapshot without saving or applying files." Write-Host " -Restore Restore snapshots from the specified directory or file." Write-Host " -CompareWithCluster Compare a snapshot with the current cluster state." Write-Host " -CompareSnapshots Compare two snapshots." Write-Host " -Force Force the action without prompting for confirmation." Write-Host " -Help Display this help message." return } # Check if kubectl is installed for actions that require it if (!(Get-Command "kubectl" -ErrorAction SilentlyContinue)) { Write-Host "'kubectl' is not installed or not found in your system's PATH." -ForegroundColor Red Write-Host "Please install 'kubectl' before running KubeSnapIt." -ForegroundColor Red Write-Host "You can install 'kubectl' from: https://kubernetes.io/docs/tasks/tools/install-kubectl/" -ForegroundColor Yellow exit } # Get the current Kubernetes context $context = kubectl config current-context if ($context) { # Add lines and styling to make it stand out Write-Host "" Write-Host "=========================================" -ForegroundColor Cyan Write-Host "YOU ARE CONNECTED TO A KUBERNETES CLUSTER" -ForegroundColor Cyan Write-Host "=========================================" -ForegroundColor Cyan Write-Host "" Write-Host "Kubernetes Context: $context" -ForegroundColor Green # Get cluster details from current context $clusterInfo = kubectl config view -o jsonpath="{.contexts[?(@.name=='$context')].context.cluster}" Write-Host "Kubernetes Cluster: $clusterInfo" -ForegroundColor Green Write-Host "" Write-Host "=========================================" -ForegroundColor Cyan Write-Host "" } else { Write-Host "You are not connected to any Kubernetes cluster." -ForegroundColor Red Write-Host "Please configure a Kubernetes cluster to connect to." -ForegroundColor Red Write-Host "Instructions to set up a cluster can be found here: https://kubernetes.io/docs/tasks/access-application-cluster/configure-access-multiple-clusters/" -ForegroundColor Yellow Write-Host "You can set the current context using the command: 'kubectl config use-context <context-name>'." -ForegroundColor Yellow exit } # Determine the operation type using switch switch ($true) { # Handle Restore operation { $Restore } { if (-not $InputPath) { Write-Host "Error: You must specify an input path for the restore operation." -ForegroundColor Red return } # Call the Restore-KubeSnapshot function Restore-KubeSnapshot -InputPath $InputPath -Force $Force -Verbose:$Verbose return } # Handle Compare with Cluster operation { $CompareWithCluster } { if (-not $InputPath) { Write-Host "Error: You must specify a snapshot path for comparison." -ForegroundColor Red return } Write-Verbose "Comparing snapshot with current cluster state: $InputPath" Compare-Files -LocalFile $InputPath -Verbose:$Verbose return } # Handle Compare Snapshots operation { $CompareSnapshots } { if (-not $InputPath) { Write-Host "Error: You must specify a snapshot path for comparison." -ForegroundColor Red return } # Ensure ComparePath is provided for snapshot comparison if (-not [string]::IsNullOrWhiteSpace($ComparePath)) { Write-Verbose "Comparing two snapshots: $InputPath and $ComparePath" Compare-Files -LocalFile $InputPath -CompareFile $ComparePath -Verbose:$Verbose return } else { Write-Host "Error: You must specify a second snapshot for comparison (-ComparePath)." -ForegroundColor Red return } } # Handle Snapshot operation { $Namespace -or $AllNamespaces } { # Set output path and create directory if it doesn't exist if (-not (Test-Path -Path $OutputPath)) { New-Item -Path $OutputPath -ItemType Directory -Force | Out-Null Write-Verbose "Output directory created: $OutputPath" } Write-Verbose "Starting snapshot process..." if ($DryRun) { Write-Host "Dry run enabled. No files will be saved." -ForegroundColor Yellow } # Call the snapshot function try { Save-KubeSnapshot -Namespace $Namespace -AllNamespaces:$AllNamespaces -Labels $Labels -Objects $Objects -OutputPath $OutputPath -DryRun:$DryRun -Verbose:$Verbose } catch { Write-Host "Error occurred during the snapshot process: $_" -ForegroundColor Red } return } # If none of the operations match, display an error default { Write-Host "Error: You must specify either -Restore, -CompareWithCluster, or -CompareSnapshots with a valid operation." -ForegroundColor Red return } } } |