230 lines
6.9 KiB
Markdown
230 lines
6.9 KiB
Markdown
English | [简体中文](./README_zh-CN.md)
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# Echoswagger
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Swagger UI generator for Echo framework
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[](https://goreportcard.com/report/github.com/elvinchan/echoswagger)
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[](https://travis-ci.org/elvinchan/echoswagger)
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[](https://codecov.io/gh/elvinchan/echoswagger)
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## Feature
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- No SwaggerUI HTML/CSS dependency
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- Highly integrated with Echo, low intrusive design
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- Take advantage of the strong typing language and chain programming to make it easy to use
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- Recycle garbage in time, low memory usage
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## Installation
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```
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go get github.com/elvinchan/echoswagger
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```
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## Example
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```go
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package main
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import (
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"net/http"
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"github.com/elvinchan/echoswagger"
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"github.com/labstack/echo"
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)
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func main() {
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// ApiRoot with Echo instance
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r := echoswagger.New(echo.New(), "/v1", "doc/", nil)
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// Routes with parameters & responses
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r.POST("/", createUser).
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AddParamBody(User{}, "body", "User input struct", true).
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AddResponse(http.StatusCreated, "successful", nil, nil)
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// Start server
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r.Echo().Logger.Fatal(r.Echo().Start(":1323"))
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}
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type User struct {
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Name string
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}
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// Handler
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func createUser(c echo.Context) error {
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return c.JSON(http.StatusCreated, nil)
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}
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```
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## Usage
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#### Create a `ApiRoot` with `New()`, which is a wrapper of `echo.New()`
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```
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r := echoswagger.New(echo.New(), "/v1", "doc/", nil)
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```
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You can use the result `ApiRoot` instance to:
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- Setup Security definitions, request/response Content-Types, UI options, etc.
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```
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r.AddSecurityAPIKey("JWT", "JWT Token", echoswagger.SecurityInHeader).
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SetRequestContentType("application/x-www-form-urlencoded", "multipart/form-data").
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SetUI(UISetting{HideTop: true})
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```
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- Get `echo.Echo` instance.
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```
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r.Echo()
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```
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- Registers a new GET, POST, PUT, DELETE, OPTIONS, HEAD or PATCH route in default group, these are wrappers of Echo's create route methods.
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It returns a new `Api` instance.
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```
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r.GET("/:id", handler)
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```
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- And: ↓
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#### Create a `ApiGroup` with `Group()`, which is a wrapper of `echo.Group()`
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```
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g := r.Group("Users", "/users")
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```
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You can use the result `ApiGroup` instance to:
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- Set description, etc.
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```
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g.SetDescription("The desc of group")
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```
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- Set security for all routes in this group.
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```
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g.SetSecurity("JWT")
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```
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- Get `echo.Group` instance.
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```
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g.EchoGroup()
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```
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- And: ↓
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#### Registers a new route in `ApiGroup`
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GET, POST, PUT, DELETE, OPTIONS, HEAD or PATCH methods are supported by Echoswagger, these are wrappers of Echo's create route methods.
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```
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a := g.GET("/:id", handler)
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```
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You can use the result `Api` instance to:
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- Add parameter with these methods:
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```
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AddParamPath(p interface{}, name, desc string)
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AddParamPathNested(p interface{})
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AddParamQuery(p interface{}, name, desc string, required bool)
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AddParamQueryNested(p interface{})
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AddParamForm(p interface{}, name, desc string, required bool)
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AddParamFormNested(p interface{})
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AddParamHeader(p interface{}, name, desc string, required bool)
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AddParamHeaderNested(p interface{})
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AddParamBody(p interface{}, name, desc string, required bool)
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AddParamFile(name, desc string, required bool)
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```
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The methods which name's suffix are `Nested` means these methods treat parameter `p` 's fields as paramters, so it must be a struct type.
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e.g.
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```
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type SearchInput struct {
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Q string `query:"q" swagger:"desc("Keywords"),required"`
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SkipCount int `query:"skipCount"`
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}
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a.AddParamQueryNested(SearchInput{})
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```
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Is equivalent to:
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```
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a.AddParamQuery("", "q", "", true).
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AddParamQuery(0, "skipCount", "", false)
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```
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- Add responses.
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```
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a.AddResponse(http.StatusOK, "response desc", body{}, nil)
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```
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- Set Security, request/response Content-Types, summary, description, etc.
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```
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a.SetSecurity("JWT").
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SetResponseContentType("application/xml").
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SetSummary("The summary of API").
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SetDescription("The desc of API")
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```
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- Get `echo.Route` instance.
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```
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a.Route()
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```
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#### With swagger tag, you can set more info with `AddParam...` methods.
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e.g.
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```
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type User struct {
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Age int `swagger:"min(0),max(99)"`
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Gender string `swagger:"enum(male|female|other),required"`
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Money []float64 `swagger:"default(0),readOnly"`
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}
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a.AddParamBody(&User{}, "Body", "", true)
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```
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The definition is equivalent to:
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```
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{
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"definitions": {
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"User": {
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"type": "object",
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"properties": {
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"Age": {
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"type": "integer",
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"format": "int32",
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"minimum": 0,
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"maximum": 99
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},
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"Gender": {
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"type": "string",
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"enum": [
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"male",
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"female",
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"other"
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],
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"format": "string"
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},
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"Money": {
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"type": "array",
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"items": {
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"type": "number",
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"default": 0,
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"format": "double"
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},
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"readOnly": true
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}
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},
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"required": [
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"Gender"
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]
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}
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}
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}
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```
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**Supported swagger tags:**
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Tag | Type | Description
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---|:---:|---
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collect | `string` | Determines the format of the array if type array is used. Possible values are: <ul><li>`csv` - comma separated values `foo,bar`. <li>`ssv` - space separated values `foo bar`. <li>`tsv` - tab separated values `foo\tbar`. <li>`pipes` - pipe separated values `foo\|bar`. </ul> Default value is `csv`.
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desc | `string` | Description.
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maximum | `number` | -
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minimum | `number` | -
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maxLength | `integer` | -
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minLength | `integer` | -
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allowEmpty | `boolean` | Sets the ability to pass empty-valued parameters. This is valid only for either `query` or `formData` parameters and allows you to send a parameter with a name only or an empty value. Default value is `false`.
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required | `boolean` | Determines whether this parameter is mandatory. If the parameter is `in` "path", this property is `true` without setting. Otherwise, the property MAY be included and its default value is `false`.
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readOnly | `boolean` | Relevant only for Schema `"properties"` definitions. Declares the property as "read only". This means that it MAY be sent as part of a response but MUST NOT be sent as part of the request. Properties marked as `readOnly` being `true` SHOULD NOT be in the `required` list of the defined schema. Default value is `false`.
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enum | [*] | Enumerate value, multiple values should be separated by "\|"
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default | * | Default value, which type is same as the field's type.
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## Reference
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[OpenAPI Specification 2.0](https://github.com/OAI/OpenAPI-Specification/blob/master/versions/2.0.md)
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## License
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[MIT](https://github.com/elvinchan/echoswagger/blob/master/LICENSE)
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