GolangGraphQL

This project shows how to implement GraphQL service API by Golang

Tools using

• API server: https://github.com/gin-gonic/gin
• Graph: https://github.com/99designs/gqlgen
• Database: GORM, Migration
• Dependent Injection: Wire

Run Demo

First of all you need setup Mysql in your local environment.

Migrate Database by run

export MIGRATION_DIR=your_SQL_scriptions
export DATABASE_URL=your_mysql_URI
make migrate 

Generate graphql resolvers in Golang

Default directory is graph

make gqlgen

Generate indepent injection code

make di

Start API

# cd to you project folder 
go run ./apps/server

After run abover command your service will be started on default port 8080. You can use POSTMAN or another Graphql request tool to try example API

create a new product

curl --location 'localhost:8080/v1/mutation' \
--header 'Content-Type: application/json' \
--data '{"query":"mutation {\n createProduct(\n input:{\n name: \"Iphone 14 pro max\",\n sku: \"4234265565\",\n properties: {\n price: 999999999,\n color: \"PINK\",\n size:\"6.5'\''0\"\n}\n}){\n id,\n name,\n sku,\n properties {\n price,\n color,\n size\n}\n}\n}","variables":{}}'

filter products created

curl --location 'localhost:8080/v1/query' \
--header 'Content-Type: application/json' \
--data '{"query":"query {\n filter(page:1, limit:1){\n id,\n name,\n sku,\n properties{\n price,\n color,\n size\n}\n}\n}","variables":{}}'

Document References

If you have been not aware about GraphQL API yet, you can learn here Or find a tutorial suitable with your programing language [here] (https://www.howtographql.com/basics/1-graphql-is-the-better-rest/)