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Python Programming Blueprints

You're reading from   Python Programming Blueprints Build nine projects by leveraging powerful frameworks such as Flask, Nameko, and Django

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Product type Paperback
Published in Feb 2018
Publisher Packt
ISBN-13 9781786468161
Length 456 pages
Edition 1st Edition
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Authors (3):
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Marcus Pennington Marcus Pennington
Author Profile Icon Marcus Pennington
Marcus Pennington
Pierluigi Riti Pierluigi Riti
Author Profile Icon Pierluigi Riti
Pierluigi Riti
Daniel Furtado Daniel Furtado
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Daniel Furtado
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Table of Contents (11) Chapters Close

Preface 1. Implementing the Weather Application 2. Creating a Remote-Control Application with Spotify FREE CHAPTER 3. Casting Votes on Twitter 4. Exchange Rates and the Currency Conversion Tool 5. Building a Web Messenger with Microservices 6. Extending TempMessenger with a User Authentication Microservice 7. Online Video Game Store with Django 8. Order Microservice 9. Notification Serverless Application 10. Other Books You May Enjoy

Creating your first Nameko microservice

Let's start by creating a new folder titled temp_messenger and placing a new file inside, named service.py, with the following code:

from nameko.rpc import rpc 
 
class KonnichiwaService: 
 
    name = 'konnichiwa_service' 
 
    @rpc 
    def konnichiwa(self): 
        return 'Konnichiwa!' 

We first start by importing rpc from nameko.rpc. This will allow us to decorate our methods with the rpc decorator and expose them as entrypoints into our service. An entrypoint is any method in a Nameko service that acts as a gateway into our service.

In order to create a Nameko service, we simply create a new class, KonnichiwaService, and assign it a name attribute. The name attribute gives it a namespace; this will be used later when we attempt to make a remote call to the service.

We've written a method on our service...

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