Book Image

Hybrid Cloud for Developers

By : Manoj Hirway
Book Image

Hybrid Cloud for Developers

By: Manoj Hirway

Overview of this book

This book introduces you to the hybrid cloud platform, and focuses on the AWS public cloud and OpenStack private cloud platforms. It provides a deep dive into the AWS and OpenStack cloud platform services that are essential for developing hybrid cloud applications. You will learn to develop applications on AWS and OpenStack platforms with ease by leveraging various cloud services and taking advantage of PaaS. The book provides you with the ability to leverage the ?exibility of choosing a cloud platform for migrating your existing resources to the cloud, as well as developing hybrid cloud applications that can migrate virtual machine instances from AWS to OpenStack and vice versa. You will also be able to build and test cloud applications without worrying about the system that your development environment supports. The book also provides an in-depth understanding of the best practices that are followed across the industry for developing cloud applications, as well as for adapting the hybrid cloud platform. Lastly, it also sheds light on various troubleshooting techniques for OpenStack and AWS cloud platform services that are consumed by hybrid cloud applications. By the end of this book, you will have a deep understanding of the hybrid cloud platform and will be able to develop robust, efficient, modular, scalable, and ?exible cloud applications.
Table of Contents (16 chapters)
Title Page
Dedication
Packt Upsell
Contributors
Preface
Index

Developing Amazon SNS applications – Unix


We will use the same boto3 Python package, as it provides classes and functions for implementing the SNS service.

Let's start over by creating an SNS topic.

Creating a topic

An SNS topic can be created by invoking the create_topic() function of the sns_client object. The result is the Python dictionary that represents the SNS topic. Once an SNS topic is created, AWS automatically assigns a unique ARN to the topic. This ARN can be fetched using the TopicARN key of the SNS topic.

The following Python program demonstrates the creation of an SNS topic:

import boto3

# Create an SNS client object
sns_client = boto3.client(
    "sns",
   # You may have to set the AWS credentials of you haven't already set using AWS CLI
   # aws_access_key_id="YOUR ACCES KEY",   
   # aws_secret_access_key="YOUR SECRET KEY",
   # region_name=us-east-1
)

# Create an SNS topic
sns_topic = sns_client.create_topic(Name="packt-pub")
topic_arn = sns_topic['TopicArn']        # fetch...