OpenAPI: Beginner to Guru from Udemy

OpenAPI 3.0 is the leading tool for the documentation of APIs.

Formerly known as Swagger, OpenAPI has a long and established history. In 2010, Swagger started as an open source specification for designing and documenting RESTful APIs.

In 2015, the Swagger project was acquired by SmartBear Software. The Swagger Specification was donated to the Linux foundation and renamed the OpenAPI.

The OpenAPI specification is the cornerstone of a thriving open source community. Simply perform a search for OpenAPI tools and you will find projects for converters, documentation, validators, editors, mock servers, testing tools and much much more.

From the OpenAPI specification, you can generate client side source code for over 50 languages. You can generate server side code for over 40 different languages.

All of these open source contributes start with the OpenAPI specification, which we explore in depth in this course.

You start off the course with learning about what is an API, a review of the HTTP protocol and how it is used in respect to RESTFul APIs.

Then we start looking at OpenAPI and how it applies to documenting RESTFul APIs.

We then start writing an OpenAPI specification using Swagger Hub.

Swagger Hub is a free, easy to use on-line editor for Swagger and OpenAPI specifications.

You will get to create a complete OpenAPI specification for a RESTful web service.

Step by step, you learn how to:

Edit a OpenAPI specification in Swagger Hub
Define a OpenAPI specification in YAML
Add developer information
Add server information
Define an API path
Define an API operation
Create robust objects with JSON schema constraints
Improve the quality of your specification with re-useable components.
Define query parameters
Define path parameters
Define
Course Extra - Access to a Private Slack Community
You're not just enrolling in a course > You are joining a community learning about using OpenAPI.
With your enrollment to the course, you can access an exclusive Slack community. Get help from the instructor and other gurus from around the world - in real time. This community is only available to students enrolled in this course.
This is a very active Slack community with almost 500 Gurus.
With your enrollment, you can join this community of awesome gurus.
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Enroll today and see how easy it is to use OpenAPI for your RESTFul APIs.

What's inside

Learning objectives

Learn to define apis using openapi specifications
Create awesome api documentation with swagger ui

Edit openapi specifications in swagger hub

Learn to define apis using openapi specifications
Create awesome api documentation with swagger ui
Edit openapi specifications in swagger hub

Syllabus

Introduction section for your OpenAPI (formerly Swagger) course.

Welcome

Meet Your Instructor

Getting the Most out of your OpenAPI Course

Slack Group for OpenAPI: Beginner to Guru

GitHub Workflow

Learn how OpenAPI (formerly Swagger) is used to define APIs

Introduction

What is an API?

HTTP Protocol

HTTP Request Methods

Learn why you wish to use OpenAPI in your organization

Pet Clinic on Swagger Editor

OpenAPI 2.0 vs 3.0

OpenAPI Specification Quiz

YAML Crash Course

Defining a Microservice with OpenAPI

Assignment - Add Query Parameters for Beer Operations

Swagger Hub

OpenAPI Specification

OpenAPI Info Object

OpenAPI Servers Object

Assignment - Add Servers

OpenAPI Paths Object

Assignment - List Beers

OpenAPI Quiz

OpenAPI Schema

JSON Schema

OpenAPI Data Types

OpenAPI Objects

OpenAPI Enums

Assignment - Improve List Beer Response

OpenAPI Components

Challenge - Parameter Components

OpenAPI Components Object

Creating Reusable Customer Object

Assignment - Create Reusable Beer Object

OpenAPI Object Inheritance

Assignment - Update Beer Object to use Inheritance

OpenAPI Parameters

OpenAPI Parameter Object

Describing Query Parameters

Describing URL Parameters

Assignment - Add URL Parameters for Beer Operations

OpenAPI Requests

Anonymous Authentication with OpenAPI

OpenAPI Operation Summaries and Descriptions

OpenAPI Operation Tags

OpenAPI Operation Id

Describing RESTFul Create

Describing Response Headers

Read Only Properties

Assignment - Create Beer Resource

Describing RESTFul Update

Assignment - Update Beer Resource

Descibing RESTful Delete

Assignment - Delete Beer Resource

Describing Additional Responses

Assignment - Additional Responses

OpenAPI Callbacks

OpenAPI Security Definitions

OpenAPI Security Scheme

Basic Auth with OpenAPI

JWT Bearer Token Auth

OpenAPI Code Gen

OpenAPI Generated Java Client

OpenAPI Generated Java Server

Conclusion

Appendix A - Using GitHub

Git and GitHub Basics - Start Here!

Good to know

Know what's good

, what to watch for

, and possible dealbreakers

Helps learners define APIs using OpenAPI Specifications and generate code for mobile, web, and desktop applications

Emphasizes using Swagger UI for creating robust API documentation

Provides an overview of HTTP and RESTful APIs

Covers advanced concepts such as components, security, and code generation

Taught by John Thompson, an experienced instructor with over 500,000 enrollments worldwide

Includes an exclusive Slack community for support and networking

Activities

Be better prepared before your course. Deepen your understanding during and after it. Supplement your coursework and achieve mastery of the topics covered in OpenAPI: Beginner to Guru with these activities:

Review HTTP protocol

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Understand the basics of HTTP, which is used in RESTful APIs

Browse courses on HTTP

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Review the HTTP methods (GET, POST, PUT, DELETE)
Review the HTTP status codes (200, 404, 500)

Practice defining API operations

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Gain hands-on experience in defining API operations using OpenAPI

Browse courses on OpenAPI

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Create a new OpenAPI specification
Define a simple API operation (e.g., a GET operation to retrieve a list of users)
Test your API operation using a tool like Swagger Editor

Follow tutorials on OpenAPI best practices

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Expand your knowledge of OpenAPI by following tutorials from experts

Browse courses on OpenAPI

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Search for tutorials on OpenAPI best practices
Follow a tutorial on a specific topic (e.g., security, versioning)

11 other activities

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Attend a peer session on OpenAPI

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Connect with other learners and discuss OpenAPI concepts

Browse courses on OpenAPI

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Find a peer session on OpenAPI
Attend the session and actively participate in discussions

Explore Swagger Editor

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Become familiar with the Swagger Editor interface and understand how to use its tools.

Browse courses on Swagger Editor

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Access the Swagger Editor online tool.
Create a new OpenAPI Specification file.
Explore the different sections and features of the editor.

Join the Slack community for this course

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Connect with fellow students and engage in discussions to reinforce your understanding.

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Join the Slack group using the provided link.
Introduce yourself and ask any questions you may have.

Define and document OpenAPI Specifications

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Solidify your understanding and proficiency in defining and documenting APIs using OpenAPI Specifications.

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Review the provided OpenAPI Specification documentation.
Use Swagger Hub to define an OpenAPI Specification for a RESTful web service.

Create an OpenAPI specification for a personal project

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Apply your knowledge of OpenAPI by creating a specification for a real-world project

Browse courses on OpenAPI

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Choose a personal project that involves an API
Design the API using OpenAPI
Document the API using Swagger UI

Develop an OpenAPI Specification for a personal project

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Gain hands-on experience by creating an OpenAPI Specification for a project of your choice.

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Identify a suitable project or API to document.
Use the OpenAPI Specification template to define the API.
Validate the specification using a tool like the OpenAPI Validator.

Attend an OpenAPI workshop or conference

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Deepen your knowledge and stay updated on the latest trends and best practices.

Browse courses on OpenAPI

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Research and identify upcoming OpenAPI workshops or conferences.
Register and attend the event.
Actively participate in sessions and discussions.

Attend an OpenAPI meetup

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Network with professionals in the OpenAPI community

Browse courses on OpenAPI

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Find an OpenAPI meetup in your area
Attend the meetup and introduce yourself to others

Participate in an OpenAPI hackathon or competition

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Challenge yourself and apply your skills in a competitive environment.

Browse courses on OpenAPI

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Identify an upcoming OpenAPI hackathon or competition.
Form a team or participate individually.
Develop a unique and innovative OpenAPI-based solution.

Attend an OpenAPI workshop

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Gain in-depth knowledge of OpenAPI through a hands-on workshop

Browse courses on OpenAPI

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Find an OpenAPI workshop that aligns with your learning goals
Register for the workshop and prepare for the session
Attend the workshop and actively participate in the exercises

Contribute to an OpenAPI-related open-source project

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Make a valuable contribution to the OpenAPI community and enhance your understanding.

Browse courses on OpenAPI

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Identify an OpenAPI-related open-source project to contribute to.
Review the project's documentation and guidelines.
Submit a pull request with your proposed changes or contributions.
Collaborate with other contributors to improve the project.

Career center

Learners who complete OpenAPI: Beginner to Guru will develop knowledge and skills that may be useful to these careers:

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