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Network Automation with Go

Network Automation with Go

By : Nicolas Leiva, Michael Kashin
5 (5)
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Network Automation with Go

Network Automation with Go

5 (5)
By: Nicolas Leiva, Michael Kashin

Overview of this book

Go’s built-in first-class concurrency mechanisms make it an ideal choice for long-lived low-bandwidth I/O operations, which are typical requirements of network automation and network operations applications. This book provides a quick overview of Go and hands-on examples within it to help you become proficient with Go for network automation. It’s a practical guide that will teach you how to automate common network operations and build systems using Go. The first part takes you through a general overview, use cases, strengths, and inherent weaknesses of Go to prepare you for a deeper dive into network automation, which is heavily reliant on understanding this programming language. You’ll explore the common network automation areas and challenges, what language features you can use in each of those areas, and the common software tools and packages. To help deepen your understanding, you’ll also work through real-world network automation problems and apply hands-on solutions to them. By the end of this book, you’ll be well-versed with Go and have a solid grasp on network automation.
Table of Contents (18 chapters)
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1
Part 1: The Go Programming Language
6
Part 2: Common Tools and Frameworks
10
Part 3: Interacting with APIs

State validation

The way network devices model and store their state internally is often different from their configuration data model. Traditional CLI-first network devices display the state in a tabular format to the end user, making it easier for network operators to interpret and reason about it. In API-enabled network operating systems, they can present the state in a structured format, making the data friendlier for automation, but we still need to prepare the right data model for deserialization.

In this section, we will look at three different methods you could use to read the state from a network device through a code example that gathers operational data from the devices we just configured with crypto/ssh, net/http, and scrapligo in the preceding sections of this chapter. For each network device, we will use one of these resources to get the data in the format we need:

  • RESTful API calls: To retrieve and parse data from an HTTP interface
  • Regular expressions...

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