Created
October 29, 2022 16:50
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Simple graphQL API built using Golang
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package main | |
import ( | |
"fmt" | |
"github.com/graphql-go/graphql" | |
"github.com/graphql-go/handler" | |
"log" | |
"net/http" | |
"time" | |
) | |
type Note struct { | |
ID int `json: "id"` | |
Title string `json: "title"` | |
Description string `json: "description"` | |
Created_At string `json: "created_at"` | |
} | |
/**Mock database*/ | |
var notes = []Note{ | |
{1, "Title 1", "Description 1", time.Now().UTC().String()}, | |
{2, "Title 2", "Description 2", time.Now().UTC().String()}, | |
{3, "Title 3", "Description 3", time.Now().UTC().String()}, | |
} | |
func main() { | |
fmt.Println("Starting graphql server...") | |
noteType := graphql.NewObject( | |
graphql.ObjectConfig{ | |
Name: "Note", | |
Description: "User generated note", | |
Fields: graphql.Fields{ | |
"id": &graphql.Field{ | |
Type: graphql.Int, | |
}, | |
"title": &graphql.Field{ | |
Type: graphql.String, | |
}, | |
"description": &graphql.Field{ | |
Type: graphql.String, | |
}, | |
"created_at": &graphql.Field{ | |
Type: graphql.String, | |
}, | |
// Addition fields | |
}, | |
}, | |
) | |
fields := graphql.Fields{ | |
"notes": &graphql.Field{ | |
Name: "Get all notes", | |
Type: graphql.NewList(noteType), | |
Description: "Get list of all notes", | |
Resolve: func(params graphql.ResolveParams) (interface{}, error) { | |
return notes, nil | |
}, | |
}, | |
} | |
rootQuery := graphql.ObjectConfig{ | |
Name: "RootQuery", | |
Fields: fields, | |
} | |
schemaConfig := graphql.SchemaConfig{Query: graphql.NewObject(rootQuery)} | |
schema, err := graphql.NewSchema(schemaConfig) | |
if err != nil { | |
log.Fatalf("Failed to create graphql schema: %v", err) | |
} | |
handler := handler.New(&handler.Config{ | |
Schema: &schema, | |
Pretty: true, | |
GraphiQL: false, | |
}) | |
http.Handle("/graphql", handler) | |
http.Handle("/sandbox", http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { w.Write(sandboxHTML) })) | |
log.Fatal(http.ListenAndServe(":8080", nil)) | |
} | |
var sandboxHTML = []byte(` | |
<!DOCTYPE html> | |
<html lang="en"> | |
<body style="margin: 0; overflow-x: hidden; overflow-y: hidden"> | |
<div id="sandbox" style="height:100vh; width:100vw;"></div> | |
<script src="https://embeddable-sandbox.cdn.apollographql.com/_latest/embeddable-sandbox.umd.production.min.js"></script> | |
<script> | |
new window.EmbeddedSandbox({ | |
target: "#sandbox", | |
// Pass through your server href if you are embedding on an endpoint. | |
// Otherwise, you can pass whatever endpoint you want Sandbox to start up with here. | |
initialEndpoint: "http://localhost:8080/graphql", | |
}); | |
// advanced options: https://www.apollographql.com/docs/studio/explorer/sandbox#embedding-sandbox | |
</script> | |
</body> | |
</html>`) |
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