alx-common 2.8.8

An application framework promoting consistency and centralising common tasks

alx-common

A comprehensive Python framework for infrastructure automation, monitoring, and reporting. Designed to standardize common development tasks and eliminate code duplication in dev, test and production environments.

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Preamble

On first invocation, if the directory $HOME/.config/alx (or %APPDATA%\alx on Windows) is not found, then it is created along with the following files:

• alx.ini: The module configuration file which should be used to override settings in the defaults found in alx.ini in the installed module directory
• env: This file contains the path to the virtual environment in use and is set to the current python used to execute a script using alx-common. The file is used in a standardised start script that should be used to make best use of the module.
• key: An encryption key used to encrypt and decrypt strings. If there are multiple developers, then it is wise to share the key so the configuration file can remain consistent. This file must be stored readable only by the user and not shared. The command to create a key is:

python -c "from cryptography.fernet import Fernet; print(Fernet.generate_key().decode())"

These files can (and should) be modified to suit your needs. For example, changing alx.ini and adding

[mail]
from:       Application User <[e-mail]>
server:     your.mailhost.org

would be a good idea.

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Summary

alx-common provides a consistent foundation for building reliable internal applications that deal with:

• ✅ Configuration management
• ✅ Argument parsing
• ✅ Different environment handling: dev, test, prod
• ✅ Secure password, etc. handling with encryption
• ✅ Logging (including file rotation, maximum size and console output)
• ✅ Database utilities (MySQL, MariaDB, SQLite, PostgreSQL)
• ✅ HTML report generation
• ✅ Email notifications (plain, HTML, attachments, inline images)
• ✅ Monitoring integrations (ITRS Geneos support)
• ✅ Lightweight internal automation tools

Originally designed to simplify and standardize automation scripts, reporting jobs, monitoring pipelines, and operational tooling across real-world production environments. The aim of alx-common is to reduce hard coding and duplication of snippets.

Too many times, I have seen developers share code to 'send an email'. Then the mailhost changes and there are 200 scripts to fix. Or a shell script is copied and something edited to create a wrapper to start a python script. Or the same code is used over and over to set up logging or read a configuration file coupled with a lot of hard coding and inconsistencies.

Bad practice is endemic in the developer community as there are too many coders adopting a cut-and-paste mentality.

The name comes from my company, ALX Solutions which is no longer in operation but now lives on in PyPI and GitHub!

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Features

• Application Framework (alx.app.ALXapp)

  • Simplified argparse-based CLI definition
  • Config-driven parameter management (alx.ini)
  • Environment separation (dev/test/prod)
  • Secure password storage (Fernet encryption)
  • Dynamic path management (logs, data, config)
  • Application configuration automatically parsed and stored in alx.app.ALXapp object
  • Centralized logger management handled providing automatic house-keeping based on configuration

• Database Utilities (alx.db_util.ALXdatabase)

  • Simplifies open source database access
  • Auto-formatted SQL logging
  • Centralized connection lifecycle
  • Transaction management
  • Simplified execution mechanism

• Reporting (alx.html.ALXhtml)

  • Easy HTML generation
  • Promotes tidy and consistent code

• Email creation (alx.mail.ALXmail)

  • Supports plaintext and html formats
  • Easy email formatting and sending
  • Flexible
  • Integrated with SMTP servers, attachments, and inline images

• String manipulation (strings.py)

  • Commonly used string manipulation routines

• ITRS Geneos Utilities (alx.itrs)

  • Provides a consistent way to parse the environment on an event (alx.itrs.environment.Environment)
  • A standard alert in html / table format (alx.itrs.alert.HtmlAlert)
  • A class to create a Geneos toolkit sampler without the need to know internal details (alx.itrs.toolkit.Toolkit)
  • Standardised environment parsing

Documentation

Documentation exists inline in pdoc format. Once the module is installed pdoc alx will display the fully formatted documaentation in a browser window. It is also generated in html format at https://andrewapac.github.io/alx-common

Quick Start

from alx.app import ALXapp
import sys

args = [
    ['string'],
    ['-d', '--decrypt', {'action': 'store_true', 'default': False}]
]

app = ALXapp("Password encryption tool", args=args)

string = app.arguments.string

if not app.arguments.decrypt:
    string = app.encrypt(string)
    print("Encrypted: " + string)

print("Decrypted: " + app.decrypt(string))

sys.exit(0)

Examples

Please refer to the files in the examples directory

Changelog

See CHANGELOG for details of public releases.

Stats for nerds

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More at https://pepy.tech/projects/alx-common

Resources

• PyPI: https://pypi.org/project/alx-common/
• GitHub: https://github.com/AndrewAPAC/alx-common
• Documentation: https://andrewapac.github.io/alx-common/