In this example, the ConfigManager class is responsible for managing the application configuration. It checks if the AZURE_ENVIRONMENT environment variable is set to determine if the application is running in Azure. If it is, it initializes the Azure App Configuration client and fetches configuration settings from there. If not, it loads environ…

config_manager.py

import os
from dotenv import load_dotenv
from azure.appconfiguration import AzureAppConfigurationClient, ConfigurationSetting

class ConfigManager:
    def __init__(self):
        # Load environment variables from .env file for local development
        load_dotenv()
        
        # Check if running in Azure environment
        self.is_azure_env = os.environ.get('AZURE_ENVIRONMENT') is not None
        
        if self.is_azure_env:
            # If running in Azure, initialize Azure App Configuration client
            self.app_config_client = AzureAppConfigurationClient.from_connection_string(os.environ['AZURE_APP_CONFIGURATION_CONNECTION_STRING'])
        else:
            # If running locally, load environment variables from .env file
            load_dotenv()

    def get_config(self, key):
        if self.is_azure_env:
            # If running in Azure, fetch configuration from Azure App Configuration
            try:
                config_setting = self.app_config_client.get_configuration_setting(key)
                return config_setting.value
            except Exception as e:
                print(f"Error fetching configuration from Azure App Configuration: {str(e)}")
                return None
        else:
            # If running locally, fetch configuration from environment variables
            return os.environ.get(key)

# Usage example
if __name__ == "__main__":
    config_manager = ConfigManager()
    
    # Fetching configuration for 'EXAMPLE_SETTING'
    example_setting = config_manager.get_config('EXAMPLE_SETTING')
    
    if example_setting is not None:
        print(f"EXAMPLE_SETTING: {example_setting}")
    else:
        print("EXAMPLE_SETTING not found.")