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Hands-On RESTful Web Services with Go

You're reading from   Hands-On RESTful Web Services with Go Develop elegant RESTful APIs with Golang for microservices and the cloud

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Product type Paperback
Published in Feb 2020
Publisher Packt
ISBN-13 9781838643577
Length 404 pages
Edition 2nd Edition
Languages
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Author (1):
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Naren Yellavula Naren Yellavula
Author Profile Icon Naren Yellavula
Naren Yellavula
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Toc

Table of Contents (16) Chapters Close

Preface 1. Getting Started with REST API Development 2. Handling Routing for our REST Services FREE CHAPTER 3. Working with Middleware and RPC 4. Simplifying RESTful Services with Popular Go Frameworks 5. Working with MongoDB and Go to Create a REST API 6. Working with Protocol Buffers and gRPC 7. Working with PostgreSQL, JSON, and Go 8. Building a REST API Client in Go 9. Asynchronous API Design 10. GraphQL and Go 11. Scaling our REST API Using Microservices 12. Containerizing REST Services for Deployment 13. Deploying REST Services on Amazon Web Services 14. Handling Authentication for our REST Services 15. Other Books You May Enjoy

Exercise

Can you design the following requirements?

Develop a /healthcheck API with token authentication. Its main responsibilities should be as follows:

  • Authenticate the client and return a JWT string
  • Authorize client API requests by validating the JWT

You should use the knowledge you gained about the jwt-go package from the previous section. You have to build two endpoints, as follows:

  • /getToken
  • /healthcheck

The first endpoint should successfully log in a client and return a JWT token. The client should then use the second endpoint with the token to receive a successful response.

Post-development, the final API testing scenario should look something similar to this:

  1. If you make a GET request to the /healthcheck API without any token, you should receive an Access Denied message, as shown here:
Access Denied; Please check the access token
  1. You should be able to authenticate...
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