py-dockerdb 0.4.0

Python package for working with databases in Docker containers

Docker-DB

A Python library for managing containerized databases through Docker. This library provides a simple interface for creating, configuring, and managing database containers for development and testing environments, from within python.

Features

The following features are supported:

• Easy setup and management of database containers
• Automated container lifecycle management
• Standardized configuration interfaces
• Connection management and health checking
• Volume persistence capabilities
• Initialization script support

The following features are implemented but not tested:

• Enable/Disable error if already created
• startdb
• restartdb
• init scripts to examples

The following databases are supported:

• MongoDB
• Microsoft SQL Server
• PostgreSQL
• MySQL

These databases might be added in the future:

• Cassandra

Installation

pip install py-dockerdb

Requirements

• Python 3.7+
• Docker installed and running
• Database-specific Python drivers:
  • pymongo for MongoDB
  • pyodbc for Microsoft SQL Server
  • psycopg2 for PostgreSQL
  • mysql-connector-python for MySQL

Basic Usage

Check out the following usage examples:

MongoDB Example

from docker_db.mongodb import MongoDBConfig, MongoDB

# Create configuration
config = MongoDBConfig(
    user="testuser",
    password="testpass",
    database="testdb",
    root_username="admin",
    root_password="adminpass",
    container_name="test-mongodb"
)

# Create and start MongoDB container
db = MongoDB(config)
db.create_db()

# Connect to database
client = db.connection
# Use the database...

# Stop the container when done
db.stop_db()

# Completely remove the container
db.delete_db()

PostgreSQL Example

from docker_db.postgres import PostgresConfig, PostgresDB

# Create configuration
config = PostgresConfig(
    user="testuser",
    password="testpass",
    database="testdb",
    container_name="test-postgres"
)

# Create and start PostgreSQL container
db = PostgresDB(config)
db.create_db()

# Connect to the database
conn = db.connection

# Create a cursor and execute a query
cursor = conn.cursor()
cursor.execute("SELECT version();")
version = cursor.fetchone()
print(f"PostgreSQL version: {version[0]}")

# Clean up
cursor.close()
db.stop_db()

Working with Initialization Scripts

All database managers support initialization scripts that can be executed when the container is created:

from pathlib import Path
from docker_db.mongodb import MongoDBConfig, MongoDB

config = MongoDBConfig(
    user="testuser",
    password="testpass",
    database="testdb",
    root_username="admin",
    root_password="adminpass",
    container_name="test-mongodb",
    init_script=Path("./path/to/init_script.js")
)

Custom Volume Paths

You can specify custom volume paths to persist data between container restarts:

from pathlib import Path
from docker_db.mssql import MSSQLConfig, MSSQLDB

config = MSSQLConfig(
    user="testuser",
    password="testpass",
    database="testdb",
    sa_password="StrongPassword123!",
    container_name="test-mssql",
    volume_path=Path("./data/mssql")
)

License

This project is licensed under the MIT License - see the LICENSE file for details.