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Building Python Microservices with FastAPI

You're reading from   Building Python Microservices with FastAPI Build secure, scalable, and structured Python microservices from design concepts to infrastructure

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Product type Paperback
Published in Aug 2022
Publisher Packt
ISBN-13 9781803245966
Length 420 pages
Edition 1st Edition
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Author (1):
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Sherwin John C. Tragura Sherwin John C. Tragura
Author Profile Icon Sherwin John C. Tragura
Sherwin John C. Tragura
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Table of Contents (17) Chapters Close

Preface 1. Part 1: Application-Related Architectural Concepts for FastAPI microservice development
2. Chapter 1: Setting Up FastAPI for Starters FREE CHAPTER 3. Chapter 2: Exploring the Core Features 4. Chapter 3: Investigating Dependency Injection 5. Chapter 4: Building the Microservice Application 6. Part 2: Data-Centric and Communication-Focused Microservices Concerns and Issues
7. Chapter 5: Connecting to a Relational Database 8. Chapter 6: Using a Non-Relational Database 9. Chapter 7: Securing the REST APIs 10. Chapter 8: Creating Coroutines, Events, and Message-Driven Transactions 11. Part 3: Infrastructure-Related Issues, Numerical and Symbolic Computations, and Testing Microservices
12. Chapter 9: Utilizing Other Advanced Features 13. Chapter 10: Solving Numerical, Symbolic, and Graphical Problems 14. Chapter 11: Adding Other Microservice Features 15. Index 16. Other Books You May Enjoy

Applying the OpenAPI 3.x specification

The OpenAPI 3.0 specification is a standard API documentation and language-agnostic specification that can describe the API services without knowing its sources, reading its documentation, and understanding its business logic. Additionally, FastAPI supports OpenAPI, and it can even automatically generate the default internal documentation of the API based on OpenAPI standards.

There are three ways to document our API services using the specification:

  • By extending the OpenAPI schema definition
  • By using the internal code base properties
  • By using the Query, Body, Form, and Path functions

Extending the OpenAPI schema definition

FastAPI has a get_openapi() method from its fastapi.openapi.utils extension that can override some schema descriptions. We can modify the info, servers, and paths details of the schema definition through the get_openapi() function. The function returns a dict of all details of the OpenAPI schema...

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