254 lines
7.5 KiB
Go
254 lines
7.5 KiB
Go
// Command zfs-client is the CLI tool for creating and uploading ZFS snapshots.
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// It provides commands for backup, status checking, snapshot rotation, and incremental backups.
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package main
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import (
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"fmt"
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"os"
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"git.ma-al.com/goc_marek/zfs/internal/client"
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)
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func main() {
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if len(os.Args) < 2 {
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printUsage()
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os.Exit(1)
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}
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// Load configuration from environment and .env file
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config := client.LoadConfig()
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c := client.New(config)
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command := os.Args[1]
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switch command {
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case "backup":
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// Default: create manual backup (full or incremental)
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fmt.Println("=== Creating and sending backup ===\n")
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snapshot, err := c.CreateSnapshot()
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if err != nil {
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fmt.Printf("Error creating snapshot: %v\n", err)
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os.Exit(1)
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}
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if err := c.SendSnapshot(snapshot); err != nil {
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fmt.Printf("Error sending snapshot: %v\n", err)
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os.Exit(1)
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}
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fmt.Println("\n✓ Backup completed successfully!")
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case "backup-full":
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// Force full backup (no incremental)
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fmt.Println("=== Creating full backup ===\n")
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snapshot, err := c.CreateSnapshot()
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if err != nil {
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fmt.Printf("Error creating snapshot: %v\n", err)
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os.Exit(1)
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}
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if err := c.SendIncremental(snapshot, ""); err != nil {
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fmt.Printf("Error sending snapshot: %v\n", err)
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os.Exit(1)
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}
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// Create bookmark for future incremental backups
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if err := c.CreateBookmark(snapshot); err != nil {
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fmt.Printf("Warning: failed to create bookmark: %v\n", err)
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}
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fmt.Println("\n✓ Full backup completed successfully!")
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case "backup-incremental":
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// Incremental backup from last bookmark
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fmt.Println("=== Creating incremental backup ===\n")
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// Check for existing bookmark
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lastBookmark, err := c.GetLastBookmark()
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if err != nil {
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fmt.Printf("Error checking bookmarks: %v\n", err)
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os.Exit(1)
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}
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if lastBookmark == "" {
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fmt.Println("No existing bookmark found. Use 'backup-full' for initial backup.")
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os.Exit(1)
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}
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snapshot, err := c.CreateSnapshot()
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if err != nil {
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fmt.Printf("Error creating snapshot: %v\n", err)
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os.Exit(1)
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}
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if err := c.SendIncremental(snapshot, lastBookmark); err != nil {
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fmt.Printf("Error sending incremental snapshot: %v\n", err)
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os.Exit(1)
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}
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// Create bookmark for future incremental backups
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if err := c.CreateBookmark(snapshot); err != nil {
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fmt.Printf("Warning: failed to create bookmark: %v\n", err)
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}
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fmt.Println("\n✓ Incremental backup completed successfully!")
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case "snapshot":
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// Create typed snapshots (hourly, daily, weekly, monthly)
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if len(os.Args) < 3 {
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fmt.Println("Usage: zfs-client snapshot <hourly|daily|weekly|monthly>")
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os.Exit(1)
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}
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snapType := client.SnapshotType(os.Args[2])
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switch snapType {
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case client.SnapshotHourly, client.SnapshotDaily, client.SnapshotWeekly, client.SnapshotMonthly:
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// Valid type
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default:
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fmt.Printf("Invalid snapshot type: %s\n", snapType)
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fmt.Println("Valid types: hourly, daily, weekly, monthly")
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os.Exit(1)
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}
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fmt.Printf("=== Creating %s snapshot ===\n\n", snapType)
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snapshot, err := c.CreateSnapshotWithType(snapType)
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if err != nil {
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fmt.Printf("Error creating snapshot: %v\n", err)
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os.Exit(1)
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}
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// Check for existing bookmark for incremental
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lastBookmark, _ := c.GetLastBookmark()
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if err := c.SendIncremental(snapshot, lastBookmark); err != nil {
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fmt.Printf("Error sending snapshot: %v\n", err)
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os.Exit(1)
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}
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// Create bookmark
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if err := c.CreateBookmark(snapshot); err != nil {
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fmt.Printf("Warning: failed to create bookmark: %v\n", err)
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}
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// Rotate local snapshots using server policy if available
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policy, err := getRotationPolicy(c)
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if err != nil {
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fmt.Printf("Warning: failed to get rotation policy: %v\n", err)
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policy = client.DefaultPolicy()
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}
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if err := c.RotateLocalSnapshots(policy); err != nil {
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fmt.Printf("Warning: failed to rotate snapshots: %v\n", err)
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}
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fmt.Printf("\n✓ %s snapshot completed successfully!\n", snapType)
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case "rotate":
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// Rotate local snapshots using server policy if available
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fmt.Println("=== Rotating local snapshots ===\n")
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policy, err := getRotationPolicy(c)
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if err != nil {
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fmt.Printf("Warning: failed to get rotation policy: %v\n", err)
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policy = client.DefaultPolicy()
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}
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if err := c.RotateLocalSnapshots(policy); err != nil {
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fmt.Printf("Error rotating snapshots: %v\n", err)
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os.Exit(1)
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}
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fmt.Println("\n✓ Rotation completed!")
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case "rotate-remote":
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// Request server to rotate remote snapshots
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if err := c.RequestRotation(); err != nil {
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fmt.Printf("Error requesting rotation: %v\n", err)
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os.Exit(1)
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}
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case "status":
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if err := c.GetStatus(); err != nil {
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fmt.Printf("Error getting status: %v\n", err)
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os.Exit(1)
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}
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case "bookmarks":
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// List bookmarks
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fmt.Println("=== ZFS Bookmarks ===\n")
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bookmark, err := c.GetLastBookmark()
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if err != nil {
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fmt.Printf("Error: %v\n", err)
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os.Exit(1)
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}
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if bookmark == "" {
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fmt.Println("No bookmarks found")
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} else {
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fmt.Printf("Last bookmark: %s\n", bookmark)
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}
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case "help", "-h", "--help":
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printUsage()
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default:
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fmt.Printf("Unknown command: %s\n", command)
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printUsage()
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os.Exit(1)
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}
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}
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// getRotationPolicy fetches the rotation policy from the server.
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// If the server has a policy configured, it must be used.
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// Otherwise, the default policy is returned.
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func getRotationPolicy(c *client.Client) (*client.SnapshotPolicy, error) {
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serverPolicy, err := c.GetRotationPolicy()
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if err != nil {
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return nil, err
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}
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if serverPolicy.ServerManaged && serverPolicy.RotationPolicy != nil {
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fmt.Println(" Using server-managed rotation policy")
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return serverPolicy.RotationPolicy, nil
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}
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// No server policy, use default
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fmt.Println(" Using default rotation policy")
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return client.DefaultPolicy(), nil
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}
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func printUsage() {
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fmt.Println("ZFS Snapshot Backup Client")
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fmt.Println("\nUsage: zfs-client [command]")
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fmt.Println("\nCommands:")
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fmt.Println(" backup - Create snapshot and send (auto incremental if bookmark exists)")
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fmt.Println(" backup-full - Create full backup (no incremental)")
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fmt.Println(" backup-incremental - Create incremental backup from last bookmark")
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fmt.Println(" snapshot <type> - Create typed snapshot (hourly|daily|weekly|monthly)")
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fmt.Println(" rotate - Rotate local snapshots based on retention policy")
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fmt.Println(" rotate-remote - Request server to rotate old remote snapshots")
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fmt.Println(" status - Check server status and quota")
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fmt.Println(" bookmarks - List ZFS bookmarks")
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fmt.Println(" help - Show this help message")
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fmt.Println("\nSnapshot Retention Policy (default):")
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fmt.Println(" Hourly: 24 snapshots")
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fmt.Println(" Daily: 7 snapshots")
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fmt.Println(" Weekly: 4 snapshots")
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fmt.Println(" Monthly: 12 snapshots")
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fmt.Println("\nEnvironment Variables (can be set in .env file):")
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fmt.Println(" CLIENT_ID - Client identifier (default: client1)")
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fmt.Println(" API_KEY - API key for authentication (default: secret123)")
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fmt.Println(" SERVER_URL - Backup server URL (default: http://localhost:8080)")
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fmt.Println(" LOCAL_DATASET - ZFS dataset to backup (default: tank/data)")
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fmt.Println(" COMPRESS - Enable gzip compression (default: true)")
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fmt.Println(" STORAGE_TYPE - Storage type: s3 or local (default: s3)")
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fmt.Println("\nExamples:")
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fmt.Println(" zfs-client backup")
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fmt.Println(" zfs-client backup-full")
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fmt.Println(" zfs-client snapshot hourly")
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fmt.Println(" zfs-client rotate")
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fmt.Println(" CLIENT_ID=myclient zfs-client backup")
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}
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