Book Image

Echo Quick Start Guide

By : Ben Huson
Book Image

Echo Quick Start Guide

By: Ben Huson

Overview of this book

Echo is a leading framework for creating web applications with the Go language.  This book will show you how to develop scalable real-world web apps, RESTful services, and backend systems with Echo.  After a thorough understanding of the basics, you'll be introduced to all the concepts for a building real-world web system with Echo. You will start with the the Go HTTP standard library, and setting up your work environment. You will move on to Echo handlers, group routing, data binding, and middleware processing. After that, you will learn how to test your Go application and use templates.  By the end of this book you will be able to build your very own high performance apps using Echo. A Quick Start Guide is a focussed, shorter title which provides a faster paced introduction to a technology. They are for people who don’t need all the detail at this point in their learning curve. The presentation has been streamlined to concentrate on the things you really need to know, rather than everything.
Table of Contents (10 chapters)

Logging

It is very often the case that you will need to log events within your web application. Echo provides a simple mechanism by which the developer can access the logger through the echo.Context by calling the Logger method. When you instantiate the Echo framework, a logger can be set, which is the same logger that you will be able to access from the context. The following code can be used to access the logger in your application handler, giving you the ability to write logs with various log levels, as shown in the following code. The code is taken from $GOPATH/src/github.com/PacktPublishing/Echo-Essentials/chapter6/handlers/health_check.go:

// HealthCheck - Health Check Handler
func HealthCheck(c echo.Context) error {
    if reqID, ok := c.Get(middlewares.RequestIDContextKey).(uuid.UUID); ok {    
c.Logger().Debugf("RequestID: %s", reqID.String())
} ...