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Parser OpenAPI Build Status

Parse openAPI from go comments in handlers and structs

Install

  • go get github.com/alexjomin/openapi-parser

Comments

Infos

The comments use the yaml syntax of the openapi specs. Just use the tag @openapi:info in your comments before the comments in which you want to set the openapi info fields.

// @openapi:info
//  version: 0.0.1
//  title: Some cool title
//  description: Awesome description

Note that only the first declaration of your info fields will be kept and inserted in the final yaml description file.

Path

The comments use the yaml syntax of the openapi specs. Just @openapi:path before the handler Be careful with the number of tabs

// GetUser returns a user corresponding to specified id
// @openapi:path
// /pets:
//	get:
//		description: "The description of the endpoint"
//		responses:
//			"200":
//				description: "The description of the response"
//				content:
//					application/json:
//						schema:
//							type: "array"
//							items:
//								$ref: "#/components/schemas/Pet"
//		parameters:
//			- in: path
//				name: deviceId
//				schema:
//					type: integer
//				required: true
//				description: Numeric ID of the user to get
func GetPets(w http.ResponseWriter, r *http.Request) {}

Schema

The parser will parse the struct to create the shema, just add @openapi:schema before your struct

By default the name of the schema will be the name of the struct. You can overide it with @openapi:schema:CustomName. Warning not all type are handled for now, work in progress.

// Pet struct
// @openapi:schema
type Pet struct {
	String          string     `json:"string,omitempty"`
	Int             int        `json:"int,omitempty"`
	PointerOfString *string    `json:"pointerOfString"`
	SliceOfString   []string   `json:"sliceofString"`
	SliceOfInt      []int      `json:"sliceofInt"`
	Struct          Foo        `json:"struct"`
	PointerOfStruct *Foo       `json:"pointerOfStruct"`
	Time            time.Time  `json:"time"`
	PointerOfTime   *time.Time `json:"pointerOfTime"`
}

Usage

Parse comments in code to generate an OpenAPI documentation

Usage:
  openapi-parser [flags]
  openapi-parser [command]

Available Commands:
  help        Help about any command
  merge       Merge multiple openapi specification into one

Flags:
      --exit-error                  When an error occurs on parsing, exit with a code > 0
  -h, --help                        help for openapi-parser
      --output string               The output file (default "openapi.yaml")
      --parse-vendors stringArray   Give the vendor to parse
      --path string                 The Folder to parse (default ".")
      --vendors-path string         Give the vendor path (default "vendor")

Example

openapi-parser

openapi-parser --path /my/path --output my-openapi.yaml

openapi-parser --path /my/path --output my-openapi.yaml --exit-error

openapi-parser --path /my/path --output my-openapi.yaml --parse-vendors github.com/my/library-to-parse

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Simple and still naive openapi documentation generator from comments of your Go code.

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