Add pgBackRest Support for PostgreSQL Backups

[jaykayudo]

📋 Description

This PR implements backup capabilities for PostgreSQL databases using pgBackRest, addressing the limitations of the current pg_dump-based backup system, particularly for large databases.

🎯 Changes Made

Core Components

1. New Service Layer (app/Services/PgBackRestService.php)

• Handles all pgBackRest operations
• Automatic installation in database containers
• Configuration management (stanza creation, WAL archiving)
• Backup operations (full, differential, incremental)
• Restore operations (full database and PITR)
• S3 integration with encryption
• Status monitoring and health checks

2. Background Job (app/Jobs/PgBackRestBackupJob.php)

• Queue-based backup execution
• Intelligent backup type selection:
  • Full backup: Every 7 days
  • Differential backup: Daily (changes since last full)
  • Incremental backup: All other times (changes since last backup)
• Automatic retention management
• Error handling and notifications
• Integration with existing backup system

3. Database Schema (database/migrations/_add_pgbackrest_support.php)

• Added backup_engine field to scheduled_database_backups (pg_dump/pgbackrest)
• Added use_pgbackrest boolean flag
• Added pgbackrest_config JSON field for configuration
• Added backup_type to scheduled_database_backup_executions (full/diff/incr)
• Added database_size to track original database size
• New pgbackrest_configurations table for detailed status tracking
• All changes maintain backward compatibility

4. UI Components

• Livewire Component (app/Livewire/Project/Database/Backup/BackupConfiguration.php)

  • Enable/disable pgBackRest with one click
  • Real-time status indicators
  • Configuration management
  • Manual backup triggers

• Blade View (resources/views/livewire/project/database/backup/configuration.blade.php)

  • Beautiful, modern interface
  • Dark mode support
  • Cost savings indicators
  • Backup strategy explanation
  • One-click actions

5. API Endpoints (app/Http/Controllers/Api/BackupController.php)

• GET /api/databases/{uuid}/backups - List all backups
• POST /api/databases/{uuid}/backups - Create backup configuration
• POST /api/backups/{id}/execute - Trigger manual backup (with optional type)
• GET /api/backups/executions/{id} - Get execution details
• POST /api/backups/executions/{id}/restore - Restore from backup (with optional PITR)
• GET /api/databases/{uuid}/pgbackrest/status - Get pgBackRest status

🔗 Related Issues

Closes #7172

/claim #7172