API Operation

annotation description
description A verbose explanation of the operation behavior.
id A unique string used to identify the operation. Must be unique among all API operations.
tags A list of tags to each API operation that separated by commas.
summary A short summary of what the operation does.
accept A list of MIME types the APIs can consume. Value MUST be as described under Mime Types.
produce A list of MIME types the APIs can produce. Value MUST be as described under Mime Types.
param Parameters that separated by spaces. param name,param type,data type,is mandatory?,comment attribute(optional)
security Security to each API operation.
success Success response that separated by spaces. return code,{param type},data type,comment
failure Failure response that separated by spaces. return code,{param type},data type,comment
router Failure response that separated by spaces. path,[httpMethod]

Example

celler/controller

Limitation

  • Not supported for cross-package models. Only search in project root folder. See #39

Mime Types

Mime Type annotation
application/json application/json, json
text/xml text/xml, xml
text/plain text/plain, plain
html text/html, html
multipart/form-data multipart/form-data, mpfd
application/x-www-form-urlencoded application/x-www-form-urlencoded, x-www-form-urlencoded
application/vnd.api+json application/vnd.api+json, json-api
application/x-json-stream application/x-json-stream, json-stream
application/octet-stream application/octet-stream, octet-stream
image/png image/png, png
image/jpeg image/jpeg, jpeg
image/gif image/gif, gif

Security

General API info.

// @securityDefinitions.basic BasicAuth

// @securitydefinitions.oauth2.application OAuth2Application
// @tokenUrl https://example.com/oauth/token
// @scope.write Grants write access
// @scope.admin Grants read and write access to administrative information

Each API operation.

// @Security ApiKeyAuth

Make it AND condition

// @Security ApiKeyAuth
// @Security OAuth2Application[write, admin]

Param Type

  • object (struct)
  • string (string)
  • integer (int, uint, uint32, uint64)
  • number (float32)
  • boolean (bool)
  • array

Data Type

  • string (string)
  • integer (int, uint, uint32, uint64)
  • number (float32)
  • boolean (bool)
  • user defined struct

Attribute

// @Param enumstring query string false "string enums" Enums(A, B, C)
// @Param enumint query int false "int enums" Enums(1, 2, 3)
// @Param enumnumber query number false "int enums" Enums(1.1, 1.2, 1.3)
// @Param string query string false "string valid" minlength(5) maxlength(10)
// @Param int query int false "int valid" mininum(1) maxinum(10)
// @Param default query string false "string default" default(A)

Available

Field Name Type Description
default * Declares the value of the parameter that the server will use if none is provided, for example a "count" to control the number of results per page might default to 100 if not supplied by the client in the request. (Note: "default" has no meaning for required parameters.) See https://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-6.2. Unlike JSON Schema this value MUST conform to the defined type for this parameter.
maximum number See https://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-5.1.2.
minimum number See https://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-5.1.3.
maxLength integer See https://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-5.2.1.
minLength integer See https://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-5.2.2.
enums [*] See https://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-5.5.1.

Future

Field Name Type Description
format string The extending format for the previously mentioned type. See Data Type Formats for further details.
multipleOf number See https://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-5.1.1.
pattern string See https://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-5.2.3.
maxItems integer See https://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-5.3.2.
minItems integer See https://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-5.3.3.
uniqueItems boolean See https://tools.ietf.org/html/draft-fge-json-schema-validation-00#section-5.3.4.
collectionFormat string Determines the format of the array if type array is used. Possible values are:
  • `csv` - comma separated values `foo,bar`.
  • `ssv` - space separated values `foo bar`.
  • `tsv` - tab separated values `foo\tbar`.
  • `pipes` - pipe separated values foo|bar.
  • `multi` - corresponds to multiple parameter instances instead of multiple values for a single instance `foo=bar&foo=baz`. This is valid only for parameters [`in`](#parameterIn) "query" or "formData".
Default value is csv.

TIPS

User defined structure with an array type

// @Success 200 {array} model.Account <-- This is a user defined struct.

package model

type Account struct {
    ID   int    `json:"id" example:"1"`
    Name string `json:"name" example:"account name"`
}

Use multiple path params

/// ...
// @Param group_id path int true "Group ID"
// @Param account_id path int true "Account ID"
// ...
// @Router /examples/groups/{group_id}/accounts/{account_id} [get]

Example value of struct

type Account struct {
    ID   int    `json:"id" example:"1"`
    Name string `json:"name" example:"account name"`
    PhotoUrls []string `json:"photo_urls" example:"http://test/image/1.jpg,http://test/image/2.jpg"`
}

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