Book Image

Network Automation with Go

By : Nicolas Leiva, Michael Kashin
Book Image

Network Automation with Go

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)
1
Part 1: The Go Programming Language
6
Part 2: Common Tools and Frameworks
10
Part 3: Interacting with APIs

Decoding and Encoding

One of the most common network automation tasks is the ingesting and processing of structured data. You can retrieve data from or send it to a remote location or even store it on a local disk. Regardless of its location, you have to convert this data into an appropriate format. Encoding or marshaling is the process of transforming bytes from a Go data structure into a structured textual representation. Decoding or unmarshalling is the reverse process of populating Go values with externally sourced data.

Some examples of structured data encoding schemes are YAML, JSON, XML, and Protocol Buffers. Go’s standard library includes packages that implement encoding and decoding for most of these popular formats and they all leverage the io.Reader and io.Writer interface primitives which we’ve learned about in the last section.

In this section, we go through how Go deals with the following tasks:

  • Using tags to annotate Go structs to help libraries encode and...