Hands-On RESTful Web Services with Go - Second Edition

Developing a UUID generation API using ServeMux

A UUID is a unique identifier for a resource or a transaction. UUIDs are widely used for identifying an HTTP request. Let us develop an API for generating a UUID. Please follow these steps:

1. Create the program file as follows:

touch -p $GOPATH/src/github.com/git-user/chapter2/uuidGenerator/main.go

2. Any Go struct with a few dedicated HTTP methods is qualified to be a ServeMux. For example, we can create a custom UUID struct and implement the ServeHTTP function in order to make it a ServeMux object. Following is the implementation for the uuidGenerator.go module:

import (  "crypto/rand"  "fmt")// UUID is a custom multiplexertype UUID struct {}func (p *UUID) ServeHTTP(w http.ResponseWriter, r *http.Request) ...