microservice-chassis-grupo2 2.0.0

A reusable library for microservices

🧩 Microservice Chassis Grupo 2

Repository link: https://github.com/Grupo-MACC/Chassis

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Functionalities

This repository provides a shared chassis for microservices, containing configuration, database management, authentication, messaging, and helper utilities.
It allows microservices to reuse common functionalities such as database connections, JWT validation, RabbitMQ communication, and standardized base models.

Below is a detailed list of the available functionalities:

Module	Functionality	Description
core/config.py	Settings Management	Centralized configuration for the chassis. Defines constants like the encryption algorithm (RS256), RabbitMQ connection parameters (RABBITMQ_HOST), and exchange name (broker).
core/security.py	Token Decoding and Verification	Handles JWT decoding using a public RSA key. Validates tokens and raises appropriate HTTP errors if invalid or missing.
core/dependencies.py	Database Session & Authentication Dependency	Provides FastAPI dependencies to manage asynchronous database sessions (get_db) and current user retrieval (get_current_user) from a JWT token.
core/rabbitmq.py	RabbitMQ Channel & Exchange Management	Creates asynchronous connections to RabbitMQ using aio_pika. Declares durable topic exchanges for inter-service communication.
core/utils.py	Helper Functions and Service URLs	Defines service URLs (order, machine, delivery, payment, auth) and provides error handling utilities with standardized logging (raise_and_log_error).
sql/database.py	Database Engine & Session Configuration	Configures SQLAlchemy’s asynchronous engine and sessionmaker. Supports SQLALCHEMY_DATABASE_URL via environment variable (defaults to SQLite).
sql/base_class.py	Base Model for ORM Classes	Provides a reusable abstract base class (BaseModel) for all database models, including timestamp columns (creation_date, update_date) and helper methods for converting models to dictionaries.

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Functionalities per Microservice

Microservice	Used Functionalities
payment	core/config, core/security, core/dependencies, core/rabbitmq, core/utils, sql/database, sql/base_class

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Summary

This chassis allows the payment microservice (and potentially others in the future) to operate with consistent patterns for:

• Secure token validation.
• Standardized database access and sessions.
• Centralized configuration.
• RabbitMQ-based inter-service communication.
• Common helper utilities and error management.
• Unified base ORM models.

It provides a robust foundation for building scalable and maintainable microservices within the system.