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Loads database connection configuration from a specified configuration file and returns a ConnectionConfig object.

Purpose

This function serves as a convenience wrapper to load database connection settings from a configuration file. It delegates to the ConnectionConfig class's from_config_file class method to parse and instantiate the configuration object. This is typically used during application initialization to establish database connection parameters from external configuration files (likely JSON, YAML, or similar formats).

Source Code

def load_connection_config(config_file: str) -> ConnectionConfig:
    """Load connection configuration from file"""
    return ConnectionConfig.from_config_file(config_file)

Parameters

Parameter Details

config_file: A string representing the file path to the configuration file containing connection settings. This should be an absolute or relative path to a valid configuration file that can be parsed by ConnectionConfig.from_config_file(). The file format depends on the ConnectionConfig implementation but likely contains database host, port, credentials, and other connection parameters.

Return Value

Type: ConnectionConfig

Returns a ConnectionConfig object that encapsulates all database connection parameters loaded from the specified file. This object likely contains attributes such as host, port, database name, username, password, and other connection-specific settings. The exact structure depends on the ConnectionConfig class definition.

Dependencies

• pathlib
• dataclasses
• json
• urllib.parse

Required Imports

from pathlib import Path
from dataclasses import dataclass
import json
from urllib.parse import quote_plus

Usage Example

# Assuming ConnectionConfig class is defined in the same module
# and a config file exists at 'config/database.json'

config = load_connection_config('config/database.json')

# Use the loaded configuration
print(f"Connecting to: {config.host}:{config.port}")

# Example with absolute path
from pathlib import Path
config_path = Path.home() / '.myapp' / 'db_config.json'
config = load_connection_config(str(config_path))

Best Practices

• Ensure the configuration file exists before calling this function to avoid file not found errors
• Use absolute paths or paths relative to a known working directory to avoid path resolution issues
• Validate the returned ConnectionConfig object before using it to establish database connections
• Consider wrapping this call in try-except blocks to handle file reading or parsing errors gracefully
• Store sensitive connection information (passwords, API keys) securely and avoid committing configuration files with credentials to version control
• Use environment variables or secure vaults for production credentials rather than plain text configuration files
• Ensure proper file permissions on configuration files containing sensitive data

Tags

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