gqlgen初体验(一)

Building a GraphQL API in Go using gqlgen

依次执行以下命令，则完成了gqlgen站点的getting started的内容。

cd mygplprj/src
go mod init gitlab.com/jigar_xyz/mygplprj
cd cmd/go-graphql
go get github.com/99designs/gqlgen
go run github.com/99designs/gqlgen init --verbose

执行go run ./server.go就可以起到一个GraghQL站点。目录结构说明——

├── gqlgen.yml               - The gqlgen config file, knobs for controlling the generated code.
├── graph
│   ├── generated            - A package that only contains the generated runtime
│   │   └── generated.go
│   ├── model                - A package for all your graph models, generated or otherwise
│   │   └── models_gen.go
│   ├── resolver.go          - The root graph resolver type. This file wont get regenerated
│   ├── schema.graphqls      - Some schema. You can split the schema into as many graphql files as you like
│   └── schema.resolvers.go  - the resolver implementation for schema.graphql
└── server.go                - The entry point to your app. Customize it however you see fit

• gqlgen.xml 配置文件，说明如何自动生成代码。更详细的介绍参考config。结合目前工程中的gqlgen.xml可以更好理解
• generated/generated.go 根据配置自动生成的服务端文件，相当于GraphQL的运行时。可在上述配置文件中做对应的声明(文件名，文件地址，所属的包)
• models_gen.go 对应各个*.graphqls文件绑定的model，gqlgen会自己进行匹配，如果找到则忽略(相当于人工写)，否则会根据定义自动生成。Generated models required to build the graph. Often you will override these with your own models. Still very useful for input types.
• resolver.go 根类型resolver
• schema.graphqls 定义的schema，可以分割到多个不同的文件中
• schema.resolvers.go 对定义的实现

Introducing gqlgen: a GraphQL Server Generator for Go 项目开发人员对gqlgen的介绍