db-wizard 2.3.2

Advanced database copy and migration tool - supports MongoDB, MySQL, PostgreSQL, Redis

db-wizard

Advanced database copy and migration tool with interactive wizard. Supports MongoDB, MySQL, PostgreSQL, and Redis.

Why?

• Copying databases between servers means remembering long mongodump/mysqldump/pg_dump commands with connection strings
• Shell aliases with plaintext passwords end up in bash history
• No progress tracking, no error handling, no saved configurations
• Repetitive tasks require typing the same commands every time

db-wizard fixes all of this with saved hosts, saved tasks, SSH tunnels, interactive wizard, and proper error handling.

Quick Start

python -m venv .venv
source .venv/bin/activate
pip install -e .

# Launch interactive wizard
dbw

Key Features

• Multi-database: MongoDB, MySQL, PostgreSQL, and Redis through a single interface
• Auto-detect engine: URI scheme determines the engine (mongodb://, mysql://, postgres://, redis://)
• Interactive wizard: Guided menu for all operations
• SSH tunnels: Built-in tunnel for hosts behind SSH (auto port-forward)
• Saved hosts: Store connection configs with optional SSH tunnel
• Saved tasks: Create and execute repeatable copy/backup/restore tasks
• Full automation: -y flag for unattended cron jobs
• Backup & restore: Complete backup/restore with compression to local, SSH, or FTP storage
• Password masking: Credentials never shown in UI output
• Progress tracking: Real-time feedback during operations
• Smart copy: MongoDB uses mongodump/mongorestore (10-100x faster) with Python fallback; MySQL uses mysqldump/mysql pipe

Usage

Interactive Mode (Recommended)

dbw

The wizard guides you through:

• Select/create saved hosts (MongoDB, MySQL, PostgreSQL, or Redis, with optional SSH tunnel)
• Choose database and tables/collections
• Copy options (drop target, backup before drop, verify)
• Save as reusable task

Saved Tasks

# List tasks
dbw --list-tasks

# Run task with confirmation
dbw --task daily_backup

# Run automated (for cron)
dbw --task daily_backup -y

Direct Command Line

# MongoDB copy
dbw -s mongodb://source-server -t mongodb://target-server \
    --source-db myapp --drop-target -y

# MySQL copy
dbw -s mysql://user:pass@remote:3306/production \
    -t mysql://root@localhost/production \
    --source-db production --drop-target -y

Backup & Restore

# Backup to local directory
dbw --backup mongodb://localhost/myapp --backup-to /var/backups

# Backup to SSH storage
dbw --backup mongodb://localhost/production --backup-to ssh://backup@server:/backups

# Restore
dbw --restore /backups/2025_01_15-production.tar.gz --restore-to mongodb://localhost

CLI Commands

Command	Alias
db-wizard	Full name
dbw	Primary short alias

Main Options

Option	Description
-s, --source	Source database URI (mongodb:// or mysql://)
-t, --target	Target database URI
--source-db	Source database name
--target-db	Target database name (defaults to source-db)
--source-collection	Specific collection/table (omit for all)
--drop-target	Drop target before copying
-y, --yes	Full automation without prompts
--verify	Verify integrity after copy (MongoDB)
--force-python	Force Python copy instead of mongodump (MongoDB)
--list-tasks	Show saved tasks
--list-hosts	Show saved hosts
-c, --count	Count rows when listing tasks/hosts (slow on remote)
--task <name>	Execute saved task
--verify-connection	Test connection to a URI
--backup	Backup database
--backup-to	Backup destination (path or ssh:// or ftp://)
--restore	Restore from backup file
--restore-to	Restore target URI

SSH Tunnels

Hosts behind SSH can be reached automatically. When adding a host in the wizard:

1. Enter the database URI (e.g., mysql://user:pass@localhost:3306/db)
2. Enable SSH tunnel
3. Enter SSH hostname (from ~/.ssh/config) or full user@host details

The tunnel opens automatically when you select the host, forwards a random local port, and closes when db-wizard exits.

Tunnel config is saved with the host:

{
  "hosts": {
    "production": {
      "uri": "mysql://user:pass@localhost:3306/mydb",
      "ssh_tunnel": "production-server"
    }
  }
}

Configuration

Settings are saved in ~/.db_wizard_settings.json (auto-migrated from ~/.mongo_wizard_settings.json).

File permissions are set to 600 (owner-only) because it contains credentials.

{
  "hosts": {
    "local_mongo": "mongodb://localhost:27017",
    "local_mysql": "mysql://root@localhost:3306",
    "remote_db": {
      "uri": "mysql://user:pass@localhost:3306/db",
      "ssh_tunnel": "myserver"
    }
  },
  "tasks": {
    "sync_staging": {
      "source_uri": "mongodb://production:27017",
      "target_uri": "mongodb://staging:27017",
      "source_db": "app",
      "target_db": "app",
      "drop_target": true
    }
  },
  "storages": {
    "backup_server": {
      "type": "ssh",
      "host": "backup.server.com",
      "user": "backup",
      "port": 22,
      "path": "/backups"
    }
  }
}

System Requirements

• Python 3.11+
• For MongoDB: mongodump/mongorestore (install with brew install mongodb-database-tools)
• For MySQL: mysqldump/mysql CLI tools (install with brew install mysql-client)
• For PostgreSQL: pg_dump/pg_restore/psql CLI tools (install with brew install postgresql)
• For Redis: redis-cli (install with brew install redis)

The wizard checks requirements at startup and shows what's available.

Testing

# All unit tests (no database server needed)
pytest tests/ --ignore=tests/test_integration.py --ignore=tests/test_full_integration.py -v

# With coverage
pytest --cov=db_wizard --cov-report=html tests/

# Integration tests (requires MongoDB on localhost:27017)
pytest tests/test_full_integration.py -v

162 unit tests covering: engine abstraction, MongoDB engine, MySQL engine, SSH tunnels, settings migration, storage backends, formatting, utilities, bug fixes.

Architecture

db_wizard/
    engine.py           # DatabaseEngine ABC + EngineFactory
    engines/
        mongo.py        # MongoEngine (pymongo + mongodump/mongorestore)
        mysql.py        # MySQLEngine (mysqldump/mysql CLI)
        postgres.py     # PostgresEngine (pg_dump/psql CLI)
        redis.py        # RedisEngine (redis-cli)
    flows/              # Wizard interaction flows (copy, backup, etc.)
    tunnel.py           # SSH tunnel manager (auto port-forward)
    wizard.py           # Interactive wizard entrypoint (engine-agnostic)
    cli.py              # Click CLI (auto-detects engine from URI)
    backup.py           # Backup/restore manager
    task_runner.py      # Saved task executor
    settings.py         # JSON config manager (~/.db_wizard_settings.json)
    storage.py          # Storage backends (Local, SSH/SCP, FTP)

The engine abstraction (DatabaseEngine ABC) allows adding new database engines by implementing a single interface. The wizard, CLI, backup manager, and task runner are all engine-agnostic.