When the Go program is a client for the GraphQL server, the client should understand how to compose GraphQL queries correctly and send them to the server. Go cannot do that natively, but it can with the help of an external package called machinebox/graphql. This is a lightweight client that allows developers to send queries and mutations to servers.
We can install the package using the dep tool:
dep ensure -add github.com/machinebox/graphql
Let's write a tool for fetching data from GitHub's GraphQL API. For that, create a project directory called graphqlClient:
mkdir -p $GOPATH/src/github.com/git-user/chapter10/graphqlClient
touch $GOPATH/src/github.com/git-user/chapter10/graphqlClient/main.go
The goal here is to fetch the details of all the available licenses for GitHub projects. GitHub provides an API to fetch all available licenses, but...