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

OpenAPI

Within a greater infrastructure landscape, HTTP and JSON are two commonly used standards for machine-to-machine communication. Most web-based services, including public and private clouds, use a combination of these technologies to expose their externally facing APIs.

The OpenAPI Specification allows us to define and consume RESTful APIs. It lets us describe the enabled HTTP paths, responses, and JSON schemas for the corresponding payloads. It serves as a contract between an API provider and its clients to allow for a more stable and reliable API consumer experience and enables API evolution through versioning.

We don’t widely use OpenAPI in networking, arguably for historical reasons. YANG and its ecosystem of protocols predate OpenAPI and the rate of change in network operating systems is not as fast as you might expect. But we often find OpenAPI support in network appliances—SDN controllers, monitoring and provisioning systems or Domain Name System (DNS...