locobuzz-python-configuration 0.1.8

A configuration builder package

Configuration Builder Package

This package provides a flexible and extensible way to load and validate configuration data from JSON files or dictionaries. It supports the Builder design pattern to allow customization and extension of configuration properties.

Installation

Install the package using pip:

pip install locobuzz-python-configuration

Usage

Basic Usage

To create a configuration object use the create_configuration function. You can load configuration data from a JSON file or dictionary.

from locobuzz_python_configuration import create_configuration

config = create_configuration(file_path='settings.json', required_components=["sql", "clickhouse", "aws", "elastic"])
print(config.__dict__)

Extending Configuration

You can extend the existing builder classes to add new properties. Here's how to extend the SQL configuration:

Step 1: Create an Extended Builder Class Create a new file named extended_sql_config_builder.py and define the extended builder class:

from locobuzz_python_configuration.sql_config_builder import SQLConfigurationBuilder, InvalidSQLConfigurationError

class ExtendedSQLConfigurationBuilder(SQLConfigurationBuilder):
    def __init__(self, config):
        super().__init__(config)
        self._sql_database_name = None

    def build(self, data):
        super().build(data)
        self._sql_database_name = data.get('sql_database_name')
        if not self._sql_database_name:
            raise InvalidSQLConfigurationError("Missing SQL database name configuration property")
        self._config._sql_database_name = self._sql_database_name

Step 2: Use the New Builder Class Update your main script to use the new builder class:

from locobuzz_python_configuration import create_configuration
from new_builder_class import NewBuilderClass

custom_builders = {
    'new_builder': NewBuilderClass
}

config = create_configuration(file_path='settings.json', required_components=["sql", "clickhouse", "aws", "elastic", "new_builder"], builder_classes=custom_builders)
print(config.__dict__)

Handling Errors

The package includes specific error classes for different components. Here's how to handle errors:

from locobuzz_python_configuration import create_configuration, InvalidConfigurationError
from extended_sql_config_builder import ExtendedSQLConfigurationBuilder

try:
    custom_builders = {
        'sql': ExtendedSQLConfigurationBuilder
    }

    config = create_configuration(file_path='settings.json', required_components=["sql", "clickhouse", "aws", "elastic"], builder_classes=custom_builders)
    if config:
        print("Configuration loaded successfully:", config.__dict__)
except InvalidConfigurationError as e:
    print(f"Error loading configuration: {e}")

Customizing Validation

If you need to customize the validation process for a specific component, extend the validation logic in your builder class:

from locobuzz_python_configuration.sql_config_builder import SQLConfigurationBuilder, InvalidSQLConfigurationError

class CustomSQLConfigurationBuilder(SQLConfigurationBuilder):
    def __init__(self, config):
        super().__init__(config)

    def validate(self, data):
        super().validate(data)
        if not data.get('sql_custom_property'):
            raise InvalidSQLConfigurationError("Missing SQL custom property")

    def build(self, data):
        self.validate(data)
        super().build(data)
        self._config._sql_custom_property = data.get('sql_custom_property')