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Building a Backend Application with Go

Service Component Creation for GraphQL

Learn how to create a service component in the GraphQL application.

We'll cover the following...

Create a service component

Before creating a service component, we create a new directory inside the graph directory called service. Then, we add a service component in the service.go.

Go (1.18.2)
package service
import (
    "errors"
    "github.com/google/uuid"
    "go-gql-blogs/graph/model"
)
// BlogService represents service component
type BlogService struct{}
// create a local storage
var storage []*model.Blog
Service component for the application

In the code above, there are two main components:

  • BlogService: Acts as a service component that is used by the resolver.

  • storage: Acts as local storage for the application.

Get all blogs

We create a function to get all blogs called GetAllBlogs.

Go (1.18.2)
// other codes..
func (b *BlogService) GetAllBlogs() []*model.Blog {
    return storage
}
Get all blogs

In the code above, the function simply returns all blogs.

Get blog data by

...