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Published: May 7, 2024 License: MIT Imports: 37 Imported by: 104,678

README

Gin Web Framework

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Gin is a web framework written in Go. It features a martini-like API with performance that is up to 40 times faster thanks to httprouter. If you need performance and good productivity, you will love Gin.

The key features of Gin are:

  • Zero allocation router
  • Fast
  • Middleware support
  • Crash-free
  • JSON validation
  • Routes grouping
  • Error management
  • Rendering built-in
  • Extendable

Getting started

Prerequisites
  • Go: any one of the three latest major releases (we test it with these).
Getting Gin

With Go module support, simply add the following import

import "github.com/gin-gonic/gin"

to your code, and then go [build|run|test] will automatically fetch the necessary dependencies.

Otherwise, run the following Go command to install the gin package:

$ go get -u github.com/gin-gonic/gin
Running Gin

First you need to import Gin package for using Gin, one simplest example likes the follow example.go:

package main

import (
  "net/http"

  "github.com/gin-gonic/gin"
)

func main() {
  r := gin.Default()
  r.GET("/ping", func(c *gin.Context) {
    c.JSON(http.StatusOK, gin.H{
      "message": "pong",
    })
  })
  r.Run() // listen and serve on 0.0.0.0:8080 (for windows "localhost:8080")
}

And use the Go command to run the demo:

# run example.go and visit 0.0.0.0:8080/ping on browser
$ go run example.go
Learn more examples
Quick Start

Learn and practice more examples, please read the Gin Quick Start which includes API examples and builds tag.

Examples

A number of ready-to-run examples demonstrating various use cases of Gin on the Gin examples repository.

Documentation

See API documentation and descriptions for package.

All documentation is available on the Gin website.

Articles about Gin

A curated list of awesome Gin framework.

Benchmarks

Gin uses a custom version of HttpRouter, see all benchmarks details.

Benchmark name (1) (2) (3) (4)
BenchmarkGin_GithubAll 43550 27364 ns/op 0 B/op 0 allocs/op
BenchmarkAce_GithubAll 40543 29670 ns/op 0 B/op 0 allocs/op
BenchmarkAero_GithubAll 57632 20648 ns/op 0 B/op 0 allocs/op
BenchmarkBear_GithubAll 9234 216179 ns/op 86448 B/op 943 allocs/op
BenchmarkBeego_GithubAll 7407 243496 ns/op 71456 B/op 609 allocs/op
BenchmarkBone_GithubAll 420 2922835 ns/op 720160 B/op 8620 allocs/op
BenchmarkChi_GithubAll 7620 238331 ns/op 87696 B/op 609 allocs/op
BenchmarkDenco_GithubAll 18355 64494 ns/op 20224 B/op 167 allocs/op
BenchmarkEcho_GithubAll 31251 38479 ns/op 0 B/op 0 allocs/op
BenchmarkGocraftWeb_GithubAll 4117 300062 ns/op 131656 B/op 1686 allocs/op
BenchmarkGoji_GithubAll 3274 416158 ns/op 56112 B/op 334 allocs/op
BenchmarkGojiv2_GithubAll 1402 870518 ns/op 352720 B/op 4321 allocs/op
BenchmarkGoJsonRest_GithubAll 2976 401507 ns/op 134371 B/op 2737 allocs/op
BenchmarkGoRestful_GithubAll 410 2913158 ns/op 910144 B/op 2938 allocs/op
BenchmarkGorillaMux_GithubAll 346 3384987 ns/op 251650 B/op 1994 allocs/op
BenchmarkGowwwRouter_GithubAll 10000 143025 ns/op 72144 B/op 501 allocs/op
BenchmarkHttpRouter_GithubAll 55938 21360 ns/op 0 B/op 0 allocs/op
BenchmarkHttpTreeMux_GithubAll 10000 153944 ns/op 65856 B/op 671 allocs/op
BenchmarkKocha_GithubAll 10000 106315 ns/op 23304 B/op 843 allocs/op
BenchmarkLARS_GithubAll 47779 25084 ns/op 0 B/op 0 allocs/op
BenchmarkMacaron_GithubAll 3266 371907 ns/op 149409 B/op 1624 allocs/op
BenchmarkMartini_GithubAll 331 3444706 ns/op 226551 B/op 2325 allocs/op
BenchmarkPat_GithubAll 273 4381818 ns/op 1483152 B/op 26963 allocs/op
BenchmarkPossum_GithubAll 10000 164367 ns/op 84448 B/op 609 allocs/op
BenchmarkR2router_GithubAll 10000 160220 ns/op 77328 B/op 979 allocs/op
BenchmarkRivet_GithubAll 14625 82453 ns/op 16272 B/op 167 allocs/op
BenchmarkTango_GithubAll 6255 279611 ns/op 63826 B/op 1618 allocs/op
BenchmarkTigerTonic_GithubAll 2008 687874 ns/op 193856 B/op 4474 allocs/op
BenchmarkTraffic_GithubAll 355 3478508 ns/op 820744 B/op 14114 allocs/op
BenchmarkVulcan_GithubAll 6885 193333 ns/op 19894 B/op 609 allocs/op
  • (1): Total Repetitions achieved in constant time, higher means more confident result
  • (2): Single Repetition Duration (ns/op), lower is better
  • (3): Heap Memory (B/op), lower is better
  • (4): Average Allocations per Repetition (allocs/op), lower is better

Middlewares

You can find many useful Gin middlewares at gin-contrib.

Users

Awesome project lists using Gin web framework.

  • gorush: A push notification server written in Go.
  • fnproject: The container native, cloud agnostic serverless platform.
  • photoprism: Personal photo management powered by Go and Google TensorFlow.
  • lura: Ultra performant API Gateway with middlewares.
  • picfit: An image resizing server written in Go.
  • dkron: Distributed, fault tolerant job scheduling system.

Contributing

Gin is the work of hundreds of contributors. We appreciate your help!

Please see CONTRIBUTING for details on submitting patches and the contribution workflow.

Documentation

Overview

Package gin implements a HTTP web framework called gin.

See https://gin-gonic.com/ for more information about gin.

Index

Constants

View Source
const (
	MIMEJSON              = binding.MIMEJSON
	MIMEHTML              = binding.MIMEHTML
	MIMEXML               = binding.MIMEXML
	MIMEXML2              = binding.MIMEXML2
	MIMEPlain             = binding.MIMEPlain
	MIMEPOSTForm          = binding.MIMEPOSTForm
	MIMEMultipartPOSTForm = binding.MIMEMultipartPOSTForm
	MIMEYAML              = binding.MIMEYAML
	MIMETOML              = binding.MIMETOML
)

Content-Type MIME of the most common data formats.

View Source
const (
	// PlatformGoogleAppEngine when running on Google App Engine. Trust X-Appengine-Remote-Addr
	// for determining the client's IP
	PlatformGoogleAppEngine = "X-Appengine-Remote-Addr"
	// PlatformCloudflare when using Cloudflare's CDN. Trust CF-Connecting-IP for determining
	// the client's IP
	PlatformCloudflare = "CF-Connecting-IP"
	// PlatformFlyIO when running on Fly.io. Trust Fly-Client-IP for determining the client's IP
	PlatformFlyIO = "Fly-Client-IP"
)

Trusted platforms

View Source
const (
	// DebugMode indicates gin mode is debug.
	DebugMode = "debug"
	// ReleaseMode indicates gin mode is release.
	ReleaseMode = "release"
	// TestMode indicates gin mode is test.
	TestMode = "test"
)
View Source
const AuthProxyUserKey = "proxy_user"

AuthProxyUserKey is the cookie name for proxy_user credential in basic auth for proxy.

View Source
const AuthUserKey = "user"

AuthUserKey is the cookie name for user credential in basic auth.

View Source
const BindKey = "_gin-gonic/gin/bindkey"

BindKey indicates a default bind key.

View Source
const BodyBytesKey = "_gin-gonic/gin/bodybyteskey"

BodyBytesKey indicates a default body bytes key.

View Source
const ContextKey = "_gin-gonic/gin/contextkey"

ContextKey is the key that a Context returns itself for.

View Source
const EnvGinMode = "GIN_MODE"

EnvGinMode indicates environment name for gin mode.

View Source
const Version = "v1.10.0"

Version is the current gin framework's version.

Variables

View Source
var DebugPrintFunc func(format string, values ...interface{})

DebugPrintFunc indicates debug log output format.

View Source
var DebugPrintRouteFunc func(httpMethod, absolutePath, handlerName string, nuHandlers int)

DebugPrintRouteFunc indicates debug log output format.

View Source
var DefaultErrorWriter io.Writer = os.Stderr

DefaultErrorWriter is the default io.Writer used by Gin to debug errors

View Source
var DefaultWriter io.Writer = os.Stdout

DefaultWriter is the default io.Writer used by Gin for debug output and middleware output like Logger() or Recovery(). Note that both Logger and Recovery provides custom ways to configure their output io.Writer. To support coloring in Windows use:

import "github.com/mattn/go-colorable"
gin.DefaultWriter = colorable.NewColorableStdout()

Functions

func CreateTestContext added in v1.3.0

func CreateTestContext(w http.ResponseWriter) (c *Context, r *Engine)

CreateTestContext returns a fresh engine and context for testing purposes

func Dir

func Dir(root string, listDirectory bool) http.FileSystem

Dir returns a http.FileSystem that can be used by http.FileServer(). It is used internally in router.Static(). if listDirectory == true, then it works the same as http.Dir() otherwise it returns a filesystem that prevents http.FileServer() to list the directory files.

func DisableBindValidation

func DisableBindValidation()

DisableBindValidation closes the default validator.

func DisableConsoleColor added in v1.3.0

func DisableConsoleColor()

DisableConsoleColor disables color output in the console.

func EnableJsonDecoderDisallowUnknownFields added in v1.5.0

func EnableJsonDecoderDisallowUnknownFields()

EnableJsonDecoderDisallowUnknownFields sets true for binding.EnableDecoderDisallowUnknownFields to call the DisallowUnknownFields method on the JSON Decoder instance.

func EnableJsonDecoderUseNumber added in v1.3.0

func EnableJsonDecoderUseNumber()

EnableJsonDecoderUseNumber sets true for binding.EnableDecoderUseNumber to call the UseNumber method on the JSON Decoder instance.

func ForceConsoleColor added in v1.4.0

func ForceConsoleColor()

ForceConsoleColor force color output in the console.

func IsDebugging

func IsDebugging() bool

IsDebugging returns true if the framework is running in debug mode. Use SetMode(gin.ReleaseMode) to disable debug mode.

func Mode

func Mode() string

Mode returns current gin mode.

func SetMode

func SetMode(value string)

SetMode sets gin mode according to input string.

Types

type Accounts

type Accounts map[string]string

Accounts defines a key/value for user/pass list of authorized logins.

type Context

type Context struct {
	Request *http.Request
	Writer  ResponseWriter

	Params Params

	// Keys is a key/value pair exclusively for the context of each request.
	Keys map[string]any

	// Errors is a list of errors attached to all the handlers/middlewares who used this context.
	Errors errorMsgs

	// Accepted defines a list of manually accepted formats for content negotiation.
	Accepted []string
	// contains filtered or unexported fields
}

Context is the most important part of gin. It allows us to pass variables between middleware, manage the flow, validate the JSON of a request and render a JSON response for example.

func CreateTestContextOnly added in v1.8.2

func CreateTestContextOnly(w http.ResponseWriter, r *Engine) (c *Context)

CreateTestContextOnly returns a fresh context base on the engine for testing purposes

func (*Context) Abort

func (c *Context) Abort()

Abort prevents pending handlers from being called. Note that this will not stop the current handler. Let's say you have an authorization middleware that validates that the current request is authorized. If the authorization fails (ex: the password does not match), call Abort to ensure the remaining handlers for this request are not called.

func (*Context) AbortWithError

func (c *Context) AbortWithError(code int, err error) *Error

AbortWithError calls `AbortWithStatus()` and `Error()` internally. This method stops the chain, writes the status code and pushes the specified error to `c.Errors`. See Context.Error() for more details.

func (*Context) AbortWithStatus

func (c *Context) AbortWithStatus(code int)

AbortWithStatus calls `Abort()` and writes the headers with the specified status code. For example, a failed attempt to authenticate a request could use: context.AbortWithStatus(401).

func (*Context) AbortWithStatusJSON added in v1.3.0

func (c *Context) AbortWithStatusJSON(code int, jsonObj any)

AbortWithStatusJSON calls `Abort()` and then `JSON` internally. This method stops the chain, writes the status code and return a JSON body. It also sets the Content-Type as "application/json".

func (*Context) AddParam added in v1.8.0

func (c *Context) AddParam(key, value string)

AddParam adds param to context and replaces path param key with given value for e2e testing purposes Example Route: "/user/:id" AddParam("id", 1) Result: "/user/1"

func (*Context) AsciiJSON added in v1.3.0

func (c *Context) AsciiJSON(code int, obj any)

AsciiJSON serializes the given struct as JSON into the response body with unicode to ASCII string. It also sets the Content-Type as "application/json".

func (*Context) Bind

func (c *Context) Bind(obj any) error

Bind checks the Method and Content-Type to select a binding engine automatically, Depending on the "Content-Type" header different bindings are used, for example:

"application/json" --> JSON binding
"application/xml"  --> XML binding

It parses the request's body as JSON if Content-Type == "application/json" using JSON or XML as a JSON input. It decodes the json payload into the struct specified as a pointer. It writes a 400 error and sets Content-Type header "text/plain" in the response if input is not valid.

func (*Context) BindHeader added in v1.5.0

func (c *Context) BindHeader(obj any) error

BindHeader is a shortcut for c.MustBindWith(obj, binding.Header).

func (*Context) BindJSON

func (c *Context) BindJSON(obj any) error

BindJSON is a shortcut for c.MustBindWith(obj, binding.JSON).

func (*Context) BindQuery added in v1.3.0

func (c *Context) BindQuery(obj any) error

BindQuery is a shortcut for c.MustBindWith(obj, binding.Query).

func (*Context) BindTOML added in v1.8.0

func (c *Context) BindTOML(obj any) error

BindTOML is a shortcut for c.MustBindWith(obj, binding.TOML).

func (*Context) BindUri added in v1.4.0

func (c *Context) BindUri(obj any) error

BindUri binds the passed struct pointer using binding.Uri. It will abort the request with HTTP 400 if any error occurs.

func (*Context) BindWith deprecated

func (c *Context) BindWith(obj any, b binding.Binding) error

BindWith binds the passed struct pointer using the specified binding engine. See the binding package.

Deprecated: Use MustBindWith or ShouldBindWith.

func (*Context) BindXML added in v1.4.0

func (c *Context) BindXML(obj any) error

BindXML is a shortcut for c.MustBindWith(obj, binding.BindXML).

func (*Context) BindYAML added in v1.4.0

func (c *Context) BindYAML(obj any) error

BindYAML is a shortcut for c.MustBindWith(obj, binding.YAML).

func (*Context) ClientIP

func (c *Context) ClientIP() string

ClientIP implements one best effort algorithm to return the real client IP. It calls c.RemoteIP() under the hood, to check if the remote IP is a trusted proxy or not. If it is it will then try to parse the headers defined in Engine.RemoteIPHeaders (defaulting to [X-Forwarded-For, X-Real-Ip]). If the headers are not syntactically valid OR the remote IP does not correspond to a trusted proxy, the remote IP (coming from Request.RemoteAddr) is returned.

func (*Context) ContentType

func (c *Context) ContentType() string

ContentType returns the Content-Type header of the request.

func (*Context) Cookie

func (c *Context) Cookie(name string) (string, error)

Cookie returns the named cookie provided in the request or ErrNoCookie if not found. And return the named cookie is unescaped. If multiple cookies match the given name, only one cookie will be returned.

func (*Context) Copy

func (c *Context) Copy() *Context

Copy returns a copy of the current context that can be safely used outside the request's scope. This has to be used when the context has to be passed to a goroutine.

func (*Context) Data

func (c *Context) Data(code int, contentType string, data []byte)

Data writes some data into the body stream and updates the HTTP code.

func (*Context) DataFromReader added in v1.3.0

func (c *Context) DataFromReader(code int, contentLength int64, contentType string, reader io.Reader, extraHeaders map[string]string)

DataFromReader writes the specified reader into the body stream and updates the HTTP code.

func (*Context) Deadline

func (c *Context) Deadline() (deadline time.Time, ok bool)

Deadline returns that there is no deadline (ok==false) when c.Request has no Context.

func (*Context) DefaultPostForm

func (c *Context) DefaultPostForm(key, defaultValue string) string

DefaultPostForm returns the specified key from a POST urlencoded form or multipart form when it exists, otherwise it returns the specified defaultValue string. See: PostForm() and GetPostForm() for further information.

func (*Context) DefaultQuery

func (c *Context) DefaultQuery(key, defaultValue string) string

DefaultQuery returns the keyed url query value if it exists, otherwise it returns the specified defaultValue string. See: Query() and GetQuery() for further information.

GET /?name=Manu&lastname=
c.DefaultQuery("name", "unknown") == "Manu"
c.DefaultQuery("id", "none") == "none"
c.DefaultQuery("lastname", "none") == ""

func (*Context) Done

func (c *Context) Done() <-chan struct{}

Done returns nil (chan which will wait forever) when c.Request has no Context.

func (*Context) Err

func (c *Context) Err() error

Err returns nil when c.Request has no Context.

func (*Context) Error

func (c *Context) Error(err error) *Error

Error attaches an error to the current context. The error is pushed to a list of errors. It's a good idea to call Error for each error that occurred during the resolution of a request. A middleware can be used to collect all the errors and push them to a database together, print a log, or append it in the HTTP response. Error will panic if err is nil.

func (*Context) File

func (c *Context) File(filepath string)

File writes the specified file into the body stream in an efficient way.

func (*Context) FileAttachment added in v1.4.0

func (c *Context) FileAttachment(filepath, filename string)

FileAttachment writes the specified file into the body stream in an efficient way On the client side, the file will typically be downloaded with the given filename

func (*Context) FileFromFS added in v1.6.0

func (c *Context) FileFromFS(filepath string, fs http.FileSystem)

FileFromFS writes the specified file from http.FileSystem into the body stream in an efficient way.

func (*Context) FormFile added in v1.3.0

func (c *Context) FormFile(name string) (*multipart.FileHeader, error)

FormFile returns the first file for the provided form key.

func (*Context) FullPath added in v1.5.0

func (c *Context) FullPath() string

FullPath returns a matched route full path. For not found routes returns an empty string.

router.GET("/user/:id", func(c *gin.Context) {
    c.FullPath() == "/user/:id" // true
})

func (*Context) Get

func (c *Context) Get(key string) (value any, exists bool)

Get returns the value for the given key, ie: (value, true). If the value does not exist it returns (nil, false)

func (*Context) GetBool added in v1.3.0

func (c *Context) GetBool(key string) (b bool)

GetBool returns the value associated with the key as a boolean.

func (*Context) GetDuration added in v1.3.0

func (c *Context) GetDuration(key string) (d time.Duration)

GetDuration returns the value associated with the key as a duration.

func (*Context) GetFloat64 added in v1.3.0

func (c *Context) GetFloat64(key string) (f64 float64)

GetFloat64 returns the value associated with the key as a float64.

func (*Context) GetHeader added in v1.3.0

func (c *Context) GetHeader(key string) string

GetHeader returns value from request headers.

func (*Context) GetInt added in v1.3.0

func (c *Context) GetInt(key string) (i int)

GetInt returns the value associated with the key as an integer.

func (*Context) GetInt64 added in v1.3.0

func (c *Context) GetInt64(key string) (i64 int64)

GetInt64 returns the value associated with the key as an integer.

func (*Context) GetPostForm

func (c *Context) GetPostForm(key string) (string, bool)

GetPostForm is like PostForm(key). It returns the specified key from a POST urlencoded form or multipart form when it exists `(value, true)` (even when the value is an empty string), otherwise it returns ("", false). For example, during a PATCH request to update the user's email:

    email=mail@example.com  -->  ("mail@example.com", true) := GetPostForm("email") // set email to "mail@example.com"
	   email=                  -->  ("", true) := GetPostForm("email") // set email to ""
                            -->  ("", false) := GetPostForm("email") // do nothing with email

func (*Context) GetPostFormArray

func (c *Context) GetPostFormArray(key string) (values []string, ok bool)

GetPostFormArray returns a slice of strings for a given form key, plus a boolean value whether at least one value exists for the given key.

func (*Context) GetPostFormMap added in v1.3.0

func (c *Context) GetPostFormMap(key string) (map[string]string, bool)

GetPostFormMap returns a map for a given form key, plus a boolean value whether at least one value exists for the given key.

func (*Context) GetQuery

func (c *Context) GetQuery(key string) (string, bool)

GetQuery is like Query(), it returns the keyed url query value if it exists `(value, true)` (even when the value is an empty string), otherwise it returns `("", false)`. It is shortcut for `c.Request.URL.Query().Get(key)`

GET /?name=Manu&lastname=
("Manu", true) == c.GetQuery("name")
("", false) == c.GetQuery("id")
("", true) == c.GetQuery("lastname")

func (*Context) GetQueryArray

func (c *Context) GetQueryArray(key string) (values []string, ok bool)

GetQueryArray returns a slice of strings for a given query key, plus a boolean value whether at least one value exists for the given key.

func (*Context) GetQueryMap added in v1.3.0

func (c *Context) GetQueryMap(key string) (map[string]string, bool)

GetQueryMap returns a map for a given query key, plus a boolean value whether at least one value exists for the given key.

func (*Context) GetRawData added in v1.3.0

func (c *Context) GetRawData() ([]byte, error)

GetRawData returns stream data.

func (*Context) GetString added in v1.3.0

func (c *Context) GetString(key string) (s string)

GetString returns the value associated with the key as a string.

func (*Context) GetStringMap added in v1.3.0

func (c *Context) GetStringMap(key string) (sm map[string]any)

GetStringMap returns the value associated with the key as a map of interfaces.

func (*Context) GetStringMapString added in v1.3.0

func (c *Context) GetStringMapString(key string) (sms map[string]string)

GetStringMapString returns the value associated with the key as a map of strings.

func (*Context) GetStringMapStringSlice added in v1.3.0

func (c *Context) GetStringMapStringSlice(key string) (smss map[string][]string)

GetStringMapStringSlice returns the value associated with the key as a map to a slice of strings.

func (*Context) GetStringSlice added in v1.3.0

func (c *Context) GetStringSlice(key string) (ss []string)

GetStringSlice returns the value associated with the key as a slice of strings.

func (*Context) GetTime added in v1.3.0

func (c *Context) GetTime(key string) (t time.Time)

GetTime returns the value associated with the key as time.

func (*Context) GetUint added in v1.7.0

func (c *Context) GetUint(key string) (ui uint)

GetUint returns the value associated with the key as an unsigned integer.

func (*Context) GetUint64 added in v1.7.0

func (c *Context) GetUint64(key string) (ui64 uint64)

GetUint64 returns the value associated with the key as an unsigned integer.

func (*Context) HTML

func (c *Context) HTML(code int, name string, obj any)

HTML renders the HTTP template specified by its file name. It also updates the HTTP code and sets the Content-Type as "text/html". See http://golang.org/doc/articles/wiki/

func (*Context) Handler added in v1.3.0

func (c *Context) Handler() HandlerFunc

Handler returns the main handler.

func (*Context) HandlerName

func (c *Context) HandlerName() string

HandlerName returns the main handler's name. For example if the handler is "handleGetUsers()", this function will return "main.handleGetUsers".

func (*Context) HandlerNames added in v1.4.0

func (c *Context) HandlerNames() []string

HandlerNames returns a list of all registered handlers for this context in descending order, following the semantics of HandlerName()

func (*Context) Header

func (c *Context) Header(key, value string)

Header is an intelligent shortcut for c.Writer.Header().Set(key, value). It writes a header in the response. If value == "", this method removes the header `c.Writer.Header().Del(key)`

func (*Context) IndentedJSON

func (c *Context) IndentedJSON(code int, obj any)

IndentedJSON serializes the given struct as pretty JSON (indented + endlines) into the response body. It also sets the Content-Type as "application/json". WARNING: we recommend using this only for development purposes since printing pretty JSON is more CPU and bandwidth consuming. Use Context.JSON() instead.

func (*Context) IsAborted

func (c *Context) IsAborted() bool

IsAborted returns true if the current context was aborted.

func (*Context) IsWebsocket added in v1.3.0

func (c *Context) IsWebsocket() bool

IsWebsocket returns true if the request headers indicate that a websocket handshake is being initiated by the client.

func (*Context) JSON

func (c *Context) JSON(code int, obj any)

JSON serializes the given struct as JSON into the response body. It also sets the Content-Type as "application/json".

func (*Context) JSONP added in v1.3.0

func (c *Context) JSONP(code int, obj any)

JSONP serializes the given struct as JSON into the response body. It adds padding to response body to request data from a server residing in a different domain than the client. It also sets the Content-Type as "application/javascript".

func (*Context) MultipartForm added in v1.3.0

func (c *Context) MultipartForm() (*multipart.Form, error)

MultipartForm is the parsed multipart form, including file uploads.

func (*Context) MustBindWith added in v1.3.0

func (c *Context) MustBindWith(obj any, b binding.Binding) error

MustBindWith binds the passed struct pointer using the specified binding engine. It will abort the request with HTTP 400 if any error occurs. See the binding package.

func (*Context) MustGet

func (c *Context) MustGet(key string) any

MustGet returns the value for the given key if it exists, otherwise it panics.

func (*Context) Negotiate

func (c *Context) Negotiate(code int, config Negotiate)

Negotiate calls different Render according to acceptable Accept format.

func (*Context) NegotiateFormat

func (c *Context) NegotiateFormat(offered ...string) string

NegotiateFormat returns an acceptable Accept format.

func (*Context) Next

func (c *Context) Next()

Next should be used only inside middleware. It executes the pending handlers in the chain inside the calling handler. See example in GitHub.

func (*Context) Param

func (c *Context) Param(key string) string

Param returns the value of the URL param. It is a shortcut for c.Params.ByName(key)

router.GET("/user/:id", func(c *gin.Context) {
    // a GET request to /user/john
    id := c.Param("id") // id == "john"
    // a GET request to /user/john/
    id := c.Param("id") // id == "/john/"
})

func (*Context) PostForm

func (c *Context) PostForm(key string) (value string)

PostForm returns the specified key from a POST urlencoded form or multipart form when it exists, otherwise it returns an empty string `("")`.

func (*Context) PostFormArray

func (c *Context) PostFormArray(key string) (values []string)

PostFormArray returns a slice of strings for a given form key. The length of the slice depends on the number of params with the given key.

func (*Context) PostFormMap added in v1.3.0

func (c *Context) PostFormMap(key string) (dicts map[string]string)

PostFormMap returns a map for a given form key.

func (*Context) ProtoBuf added in v1.4.0

func (c *Context) ProtoBuf(code int, obj any)

ProtoBuf serializes the given struct as ProtoBuf into the response body.

func (*Context) PureJSON added in v1.4.0

func (c *Context) PureJSON(code int, obj any)

PureJSON serializes the given struct as JSON into the response body. PureJSON, unlike JSON, does not replace special html characters with their unicode entities.

func (*Context) Query

func (c *Context) Query(key string) (value string)

Query returns the keyed url query value if it exists, otherwise it returns an empty string `("")`. It is shortcut for `c.Request.URL.Query().Get(key)`

    GET /path?id=1234&name=Manu&value=
	   c.Query("id") == "1234"
	   c.Query("name") == "Manu"
	   c.Query("value") == ""
	   c.Query("wtf") == ""

func (*Context) QueryArray

func (c *Context) QueryArray(key string) (values []string)

QueryArray returns a slice of strings for a given query key. The length of the slice depends on the number of params with the given key.

func (*Context) QueryMap added in v1.3.0

func (c *Context) QueryMap(key string) (dicts map[string]string)

QueryMap returns a map for a given query key.

func (*Context) Redirect

func (c *Context) Redirect(code int, location string)

Redirect returns an HTTP redirect to the specific location.

func (*Context) RemoteIP added in v1.7.0

func (c *Context) RemoteIP() string

RemoteIP parses the IP from Request.RemoteAddr, normalizes and returns the IP (without the port).

func (*Context) Render

func (c *Context) Render(code int, r render.Render)

Render writes the response headers and calls render.Render to render data.

func (*Context) SSEvent

func (c *Context) SSEvent(name string, message any)

SSEvent writes a Server-Sent Event into the body stream.

func (*Context) SaveUploadedFile added in v1.3.0

func (c *Context) SaveUploadedFile(file *multipart.FileHeader, dst string) error

SaveUploadedFile uploads the form file to specific dst.

func (*Context) SecureJSON added in v1.3.0

func (c *Context) SecureJSON(code int, obj any)

SecureJSON serializes the given struct as Secure JSON into the response body. Default prepends "while(1)," to response body if the given struct is array values. It also sets the Content-Type as "application/json".

func (*Context) Set

func (c *Context) Set(key string, value any)

Set is used to store a new key/value pair exclusively for this context. It also lazy initializes c.Keys if it was not used previously.

func (*Context) SetAccepted

func (c *Context) SetAccepted(formats ...string)

SetAccepted sets Accept header data.

func (*Context) SetCookie

func (c *Context) SetCookie(name, value string, maxAge int, path, domain string, secure, httpOnly bool)

SetCookie adds a Set-Cookie header to the ResponseWriter's headers. The provided cookie must have a valid Name. Invalid cookies may be silently dropped.

func (*Context) SetSameSite added in v1.6.2

func (c *Context) SetSameSite(samesite http.SameSite)

SetSameSite with cookie

func (*Context) ShouldBind added in v1.3.0

func (c *Context) ShouldBind(obj any) error

ShouldBind checks the Method and Content-Type to select a binding engine automatically, Depending on the "Content-Type" header different bindings are used, for example:

"application/json" --> JSON binding
"application/xml"  --> XML binding

It parses the request's body as JSON if Content-Type == "application/json" using JSON or XML as a JSON input. It decodes the json payload into the struct specified as a pointer. Like c.Bind() but this method does not set the response status code to 400 or abort if input is not valid.

func (*Context) ShouldBindBodyWith added in v1.3.0

func (c *Context) ShouldBindBodyWith(obj any, bb binding.BindingBody) (err error)

ShouldBindBodyWith is similar with ShouldBindWith, but it stores the request body into the context, and reuse when it is called again.

NOTE: This method reads the body before binding. So you should use ShouldBindWith for better performance if you need to call only once.

func (*Context) ShouldBindBodyWithJSON added in v1.10.0

func (c *Context) ShouldBindBodyWithJSON(obj any) error

ShouldBindBodyWithJSON is a shortcut for c.ShouldBindBodyWith(obj, binding.JSON).

func (*Context) ShouldBindBodyWithTOML added in v1.10.0

func (c *Context) ShouldBindBodyWithTOML(obj any) error

ShouldBindBodyWithTOML is a shortcut for c.ShouldBindBodyWith(obj, binding.TOML).

func (*Context) ShouldBindBodyWithXML added in v1.10.0

func (c *Context) ShouldBindBodyWithXML(obj any) error

ShouldBindBodyWithXML is a shortcut for c.ShouldBindBodyWith(obj, binding.XML).

func (*Context) ShouldBindBodyWithYAML added in v1.10.0

func (c *Context) ShouldBindBodyWithYAML(obj any) error

ShouldBindBodyWithYAML is a shortcut for c.ShouldBindBodyWith(obj, binding.YAML).

func (*Context) ShouldBindHeader added in v1.5.0

func (c *Context) ShouldBindHeader(obj any) error

ShouldBindHeader is a shortcut for c.ShouldBindWith(obj, binding.Header).

func (*Context) ShouldBindJSON added in v1.3.0

func (c *Context) ShouldBindJSON(obj any) error

ShouldBindJSON is a shortcut for c.ShouldBindWith(obj, binding.JSON).

func (*Context) ShouldBindQuery added in v1.3.0

func (c *Context) ShouldBindQuery(obj any) error

ShouldBindQuery is a shortcut for c.ShouldBindWith(obj, binding.Query).

func (*Context) ShouldBindTOML added in v1.8.0

func (c *Context) ShouldBindTOML(obj any) error

ShouldBindTOML is a shortcut for c.ShouldBindWith(obj, binding.TOML).

func (*Context) ShouldBindUri added in v1.4.0

func (c *Context) ShouldBindUri(obj any) error

ShouldBindUri binds the passed struct pointer using the specified binding engine.

func (*Context) ShouldBindWith added in v1.3.0

func (c *Context) ShouldBindWith(obj any, b binding.Binding) error

ShouldBindWith binds the passed struct pointer using the specified binding engine. See the binding package.

func (*Context) ShouldBindXML added in v1.4.0

func (c *Context) ShouldBindXML(obj any) error

ShouldBindXML is a shortcut for c.ShouldBindWith(obj, binding.XML).

func (*Context) ShouldBindYAML added in v1.4.0

func (c *Context) ShouldBindYAML(obj any) error

ShouldBindYAML is a shortcut for c.ShouldBindWith(obj, binding.YAML).

func (*Context) Status

func (c *Context) Status(code int)

Status sets the HTTP response code.

func (*Context) Stream

func (c *Context) Stream(step func(w io.Writer) bool) bool

Stream sends a streaming response and returns a boolean indicates "Is client disconnected in middle of stream"

func (*Context) String

func (c *Context) String(code int, format string, values ...any)

String writes the given string into the response body.

func (*Context) TOML added in v1.8.0

func (c *Context) TOML(code int, obj any)

TOML serializes the given struct as TOML into the response body.

func (*Context) Value

func (c *Context) Value(key any) any

Value returns the value associated with this context for key, or nil if no value is associated with key. Successive calls to Value with the same key returns the same result.

func (*Context) XML

func (c *Context) XML(code int, obj any)

XML serializes the given struct as XML into the response body. It also sets the Content-Type as "application/xml".

func (*Context) YAML

func (c *Context) YAML(code int, obj any)

YAML serializes the given struct as YAML into the response body.

type ContextKeyType added in v1.10.0

type ContextKeyType int
const ContextRequestKey ContextKeyType = 0

type Engine

type Engine struct {
	RouterGroup

	// RedirectTrailingSlash enables automatic redirection if the current route can't be matched but a
	// handler for the path with (without) the trailing slash exists.
	// For example if /foo/ is requested but a route only exists for /foo, the
	// client is redirected to /foo with http status code 301 for GET requests
	// and 307 for all other request methods.
	RedirectTrailingSlash bool

	// RedirectFixedPath if enabled, the router tries to fix the current request path, if no
	// handle is registered for it.
	// First superfluous path elements like ../ or // are removed.
	// Afterwards the router does a case-insensitive lookup of the cleaned path.
	// If a handle can be found for this route, the router makes a redirection
	// to the corrected path with status code 301 for GET requests and 307 for
	// all other request methods.
	// For example /FOO and /..//Foo could be redirected to /foo.
	// RedirectTrailingSlash is independent of this option.
	RedirectFixedPath bool

	// HandleMethodNotAllowed if enabled, the router checks if another method is allowed for the
	// current route, if the current request can not be routed.
	// If this is the case, the request is answered with 'Method Not Allowed'
	// and HTTP status code 405.
	// If no other Method is allowed, the request is delegated to the NotFound
	// handler.
	HandleMethodNotAllowed bool

	// ForwardedByClientIP if enabled, client IP will be parsed from the request's headers that
	// match those stored at `(*gin.Engine).RemoteIPHeaders`. If no IP was
	// fetched, it falls back to the IP obtained from
	// `(*gin.Context).Request.RemoteAddr`.
	ForwardedByClientIP bool

	// AppEngine was deprecated.
	// Deprecated: USE `TrustedPlatform` WITH VALUE `gin.PlatformGoogleAppEngine` INSTEAD
	// #726 #755 If enabled, it will trust some headers starting with
	// 'X-AppEngine...' for better integration with that PaaS.
	AppEngine bool

	// UseRawPath if enabled, the url.RawPath will be used to find parameters.
	UseRawPath bool

	// UnescapePathValues if true, the path value will be unescaped.
	// If UseRawPath is false (by default), the UnescapePathValues effectively is true,
	// as url.Path gonna be used, which is already unescaped.
	UnescapePathValues bool

	// RemoveExtraSlash a parameter can be parsed from the URL even with extra slashes.
	// See the PR #1817 and issue #1644
	RemoveExtraSlash bool

	// RemoteIPHeaders list of headers used to obtain the client IP when
	// `(*gin.Engine).ForwardedByClientIP` is `true` and
	// `(*gin.Context).Request.RemoteAddr` is matched by at least one of the
	// network origins of list defined by `(*gin.Engine).SetTrustedProxies()`.
	RemoteIPHeaders []string

	// TrustedPlatform if set to a constant of value gin.Platform*, trusts the headers set by
	// that platform, for example to determine the client IP
	TrustedPlatform string

	// MaxMultipartMemory value of 'maxMemory' param that is given to http.Request's ParseMultipartForm
	// method call.
	MaxMultipartMemory int64

	// UseH2C enable h2c support.
	UseH2C bool

	// ContextWithFallback enable fallback Context.Deadline(), Context.Done(), Context.Err() and Context.Value() when Context.Request.Context() is not nil.
	ContextWithFallback bool

	HTMLRender render.HTMLRender
	FuncMap    template.FuncMap
	// contains filtered or unexported fields
}

Engine is the framework's instance, it contains the muxer, middleware and configuration settings. Create an instance of Engine, by using New() or Default()

func Default

func Default(opts ...OptionFunc) *Engine

Default returns an Engine instance with the Logger and Recovery middleware already attached.

func New

func New(opts ...OptionFunc) *Engine

New returns a new blank Engine instance without any middleware attached. By default, the configuration is: - RedirectTrailingSlash: true - RedirectFixedPath: false - HandleMethodNotAllowed: false - ForwardedByClientIP: true - UseRawPath: false - UnescapePathValues: true

func (*Engine) Delims added in v1.3.0

func (engine *Engine) Delims(left, right string) *Engine

Delims sets template left and right delims and returns an Engine instance.

func (*Engine) HandleContext added in v1.3.0

func (engine *Engine) HandleContext(c *Context)

HandleContext re-enters a context that has been rewritten. This can be done by setting c.Request.URL.Path to your new target. Disclaimer: You can loop yourself to deal with this, use wisely.

func (*Engine) Handler added in v1.8.0

func (engine *Engine) Handler() http.Handler

func (*Engine) LoadHTMLFiles

func (engine *Engine) LoadHTMLFiles(files ...string)

LoadHTMLFiles loads a slice of HTML files and associates the result with HTML renderer.

func (*Engine) LoadHTMLGlob

func (engine *Engine) LoadHTMLGlob(pattern string)

LoadHTMLGlob loads HTML files identified by glob pattern and associates the result with HTML renderer.

func (*Engine) NoMethod

func (engine *Engine) NoMethod(handlers ...HandlerFunc)

NoMethod sets the handlers called when Engine.HandleMethodNotAllowed = true.

func (*Engine) NoRoute

func (engine *Engine) NoRoute(handlers ...HandlerFunc)

NoRoute adds handlers for NoRoute. It returns a 404 code by default.

func (*Engine) Routes

func (engine *Engine) Routes() (routes RoutesInfo)

Routes returns a slice of registered routes, including some useful information, such as: the http method, path and the handler name.

func (*Engine) Run

func (engine *Engine) Run(addr ...string) (err error)

Run attaches the router to a http.Server and starts listening and serving HTTP requests. It is a shortcut for http.ListenAndServe(addr, router) Note: this method will block the calling goroutine indefinitely unless an error happens.

func (*Engine) RunFd added in v1.4.0

func (engine *Engine) RunFd(fd int) (err error)

RunFd attaches the router to a http.Server and starts listening and serving HTTP requests through the specified file descriptor. Note: this method will block the calling goroutine indefinitely unless an error happens.

func (*Engine) RunListener added in v1.5.0

func (engine *Engine) RunListener(listener net.Listener) (err error)

RunListener attaches the router to a http.Server and starts listening and serving HTTP requests through the specified net.Listener

func (*Engine) RunTLS

func (engine *Engine) RunTLS(addr, certFile, keyFile string) (err error)

RunTLS attaches the router to a http.Server and starts listening and serving HTTPS (secure) requests. It is a shortcut for http.ListenAndServeTLS(addr, certFile, keyFile, router) Note: this method will block the calling goroutine indefinitely unless an error happens.

func (*Engine) RunUnix

func (engine *Engine) RunUnix(file string) (err error)

RunUnix attaches the router to a http.Server and starts listening and serving HTTP requests through the specified unix socket (i.e. a file). Note: this method will block the calling goroutine indefinitely unless an error happens.

func (*Engine) SecureJsonPrefix added in v1.3.0

func (engine *Engine) SecureJsonPrefix(prefix string) *Engine

SecureJsonPrefix sets the secureJSONPrefix used in Context.SecureJSON.

func (*Engine) ServeHTTP

func (engine *Engine) ServeHTTP(w http.ResponseWriter, req *http.Request)

ServeHTTP conforms to the http.Handler interface.

func (*Engine) SetFuncMap added in v1.3.0

func (engine *Engine) SetFuncMap(funcMap template.FuncMap)

SetFuncMap sets the FuncMap used for template.FuncMap.

func (*Engine) SetHTMLTemplate

func (engine *Engine) SetHTMLTemplate(templ *template.Template)

SetHTMLTemplate associate a template with HTML renderer.

func (*Engine) SetTrustedProxies added in v1.7.5

func (engine *Engine) SetTrustedProxies(trustedProxies []string) error

SetTrustedProxies set a list of network origins (IPv4 addresses, IPv4 CIDRs, IPv6 addresses or IPv6 CIDRs) from which to trust request's headers that contain alternative client IP when `(*gin.Engine).ForwardedByClientIP` is `true`. `TrustedProxies` feature is enabled by default, and it also trusts all proxies by default. If you want to disable this feature, use Engine.SetTrustedProxies(nil), then Context.ClientIP() will return the remote address directly.

func (*Engine) Use

func (engine *Engine) Use(middleware ...HandlerFunc) IRoutes

Use attaches a global middleware to the router. i.e. the middleware attached through Use() will be included in the handlers chain for every single request. Even 404, 405, static files... For example, this is the right place for a logger or error management middleware.

func (*Engine) With added in v1.10.0

func (engine *Engine) With(opts ...OptionFunc) *Engine

With returns a new Engine instance with the provided options.

type Error

type Error struct {
	Err  error
	Type ErrorType
	Meta any
}

Error represents a error's specification.

func (Error) Error

func (msg Error) Error() string

Error implements the error interface.

func (*Error) IsType

func (msg *Error) IsType(flags ErrorType) bool

IsType judges one error.

func (*Error) JSON

func (msg *Error) JSON() any

JSON creates a properly formatted JSON

func (*Error) MarshalJSON

func (msg *Error) MarshalJSON() ([]byte, error)

MarshalJSON implements the json.Marshaller interface.

func (*Error) SetMeta

func (msg *Error) SetMeta(data any) *Error

SetMeta sets the error's meta data.

func (*Error) SetType

func (msg *Error) SetType(flags ErrorType) *Error

SetType sets the error's type.

func (*Error) Unwrap added in v1.7.0

func (msg *Error) Unwrap() error

Unwrap returns the wrapped error, to allow interoperability with errors.Is(), errors.As() and errors.Unwrap()

type ErrorType

type ErrorType uint64

ErrorType is an unsigned 64-bit error code as defined in the gin spec.

const (
	// ErrorTypeBind is used when Context.Bind() fails.
	ErrorTypeBind ErrorType = 1 << 63
	// ErrorTypeRender is used when Context.Render() fails.
	ErrorTypeRender ErrorType = 1 << 62
	// ErrorTypePrivate indicates a private error.
	ErrorTypePrivate ErrorType = 1 << 0
	// ErrorTypePublic indicates a public error.
	ErrorTypePublic ErrorType = 1 << 1
	// ErrorTypeAny indicates any other error.
	ErrorTypeAny ErrorType = 1<<64 - 1
	// ErrorTypeNu indicates any other error.
	ErrorTypeNu = 2
)

type H

type H map[string]any

H is a shortcut for map[string]any

func (H) MarshalXML

func (h H) MarshalXML(e *xml.Encoder, start xml.StartElement) error

MarshalXML allows type H to be used with xml.Marshal.

type HandlerFunc

type HandlerFunc func(*Context)

HandlerFunc defines the handler used by gin middleware as return value.

func BasicAuth

func BasicAuth(accounts Accounts) HandlerFunc

BasicAuth returns a Basic HTTP Authorization middleware. It takes as argument a map[string]string where the key is the user name and the value is the password.

func BasicAuthForProxy added in v1.10.0

func BasicAuthForProxy(accounts Accounts, realm string) HandlerFunc

BasicAuthForProxy returns a Basic HTTP Proxy-Authorization middleware. If the realm is empty, "Proxy Authorization Required" will be used by default.

func BasicAuthForRealm

func BasicAuthForRealm(accounts Accounts, realm string) HandlerFunc

BasicAuthForRealm returns a Basic HTTP Authorization middleware. It takes as arguments a map[string]string where the key is the user name and the value is the password, as well as the name of the Realm. If the realm is empty, "Authorization Required" will be used by default. (see http://tools.ietf.org/html/rfc2617#section-1.2)

func Bind

func Bind(val any) HandlerFunc

Bind is a helper function for given interface object and returns a Gin middleware.

func CustomRecovery added in v1.7.0

func CustomRecovery(handle RecoveryFunc) HandlerFunc

CustomRecovery returns a middleware that recovers from any panics and calls the provided handle func to handle it.

func CustomRecoveryWithWriter added in v1.7.0

func CustomRecoveryWithWriter(out io.Writer, handle RecoveryFunc) HandlerFunc

CustomRecoveryWithWriter returns a middleware for a given writer that recovers from any panics and calls the provided handle func to handle it.

func ErrorLogger

func ErrorLogger() HandlerFunc

ErrorLogger returns a HandlerFunc for any error type.

func ErrorLoggerT

func ErrorLoggerT(typ ErrorType) HandlerFunc

ErrorLoggerT returns a HandlerFunc for a given error type.

func Logger

func Logger() HandlerFunc

Logger instances a Logger middleware that will write the logs to gin.DefaultWriter. By default, gin.DefaultWriter = os.Stdout.

func LoggerWithConfig added in v1.4.0

func LoggerWithConfig(conf LoggerConfig) HandlerFunc

LoggerWithConfig instance a Logger middleware with config.

func LoggerWithFormatter added in v1.4.0

func LoggerWithFormatter(f LogFormatter) HandlerFunc

LoggerWithFormatter instance a Logger middleware with the specified log format function.

func LoggerWithWriter

func LoggerWithWriter(out io.Writer, notlogged ...string) HandlerFunc

LoggerWithWriter instance a Logger middleware with the specified writer buffer. Example: os.Stdout, a file opened in write mode, a socket...

func Recovery

func Recovery() HandlerFunc

Recovery returns a middleware that recovers from any panics and writes a 500 if there was one.

func RecoveryWithWriter

func RecoveryWithWriter(out io.Writer, recovery ...RecoveryFunc) HandlerFunc

RecoveryWithWriter returns a middleware for a given writer that recovers from any panics and writes a 500 if there was one.

func WrapF

func WrapF(f http.HandlerFunc) HandlerFunc

WrapF is a helper function for wrapping http.HandlerFunc and returns a Gin middleware.

func WrapH

func WrapH(h http.Handler) HandlerFunc

WrapH is a helper function for wrapping http.Handler and returns a Gin middleware.

type HandlersChain

type HandlersChain []HandlerFunc

HandlersChain defines a HandlerFunc slice.

func (HandlersChain) Last

func (c HandlersChain) Last() HandlerFunc

Last returns the last handler in the chain. i.e. the last handler is the main one.

type IRouter

type IRouter interface {
	IRoutes
	Group(string, ...HandlerFunc) *RouterGroup
}

IRouter defines all router handle interface includes single and group router.

type IRoutes

IRoutes defines all router handle interface.

type LogFormatter added in v1.4.0

type LogFormatter func(params LogFormatterParams) string

LogFormatter gives the signature of the formatter function passed to LoggerWithFormatter

type LogFormatterParams added in v1.4.0

type LogFormatterParams struct {
	Request *http.Request

	// TimeStamp shows the time after the server returns a response.
	TimeStamp time.Time
	// StatusCode is HTTP response code.
	StatusCode int
	// Latency is how much time the server cost to process a certain request.
	Latency time.Duration
	// ClientIP equals Context's ClientIP method.
	ClientIP string
	// Method is the HTTP method given to the request.
	Method string
	// Path is a path the client requests.
	Path string
	// ErrorMessage is set if error has occurred in processing the request.
	ErrorMessage string

	// BodySize is the size of the Response Body
	BodySize int
	// Keys are the keys set on the request's context.
	Keys map[string]any
	// contains filtered or unexported fields
}

LogFormatterParams is the structure any formatter will be handed when time to log comes

func (*LogFormatterParams) IsOutputColor added in v1.4.0

func (p *LogFormatterParams) IsOutputColor() bool

IsOutputColor indicates whether can colors be outputted to the log.

func (*LogFormatterParams) MethodColor added in v1.4.0

func (p *LogFormatterParams) MethodColor() string

MethodColor is the ANSI color for appropriately logging http method to a terminal.

func (*LogFormatterParams) ResetColor added in v1.4.0

func (p *LogFormatterParams) ResetColor() string

ResetColor resets all escape attributes.

func (*LogFormatterParams) StatusCodeColor added in v1.4.0

func (p *LogFormatterParams) StatusCodeColor() string

StatusCodeColor is the ANSI color for appropriately logging http status code to a terminal.

type LoggerConfig added in v1.4.0

type LoggerConfig struct {
	// Optional. Default value is gin.defaultLogFormatter
	Formatter LogFormatter

	// Output is a writer where logs are written.
	// Optional. Default value is gin.DefaultWriter.
	Output io.Writer

	// SkipPaths is an url path array which logs are not written.
	// Optional.
	SkipPaths []string

	// Skip is a Skipper that indicates which logs should not be written.
	// Optional.
	Skip Skipper
}

LoggerConfig defines the config for Logger middleware.

type Negotiate

type Negotiate struct {
	Offered  []string
	HTMLName string
	HTMLData any
	JSONData any
	XMLData  any
	YAMLData any
	Data     any
	TOMLData any
}

Negotiate contains all negotiations data.

type OptionFunc added in v1.10.0

type OptionFunc func(*Engine)

OptionFunc defines the function to change the default configuration

type Param

type Param struct {
	Key   string
	Value string
}

Param is a single URL parameter, consisting of a key and a value.

type Params

type Params []Param

Params is a Param-slice, as returned by the router. The slice is ordered, the first URL parameter is also the first slice value. It is therefore safe to read values by the index.

func (Params) ByName

func (ps Params) ByName(name string) (va string)

ByName returns the value of the first Param which key matches the given name. If no matching Param is found, an empty string is returned.

func (Params) Get

func (ps Params) Get(name string) (string, bool)

Get returns the value of the first Param which key matches the given name and a boolean true. If no matching Param is found, an empty string is returned and a boolean false .

type RecoveryFunc added in v1.7.0

type RecoveryFunc func(c *Context, err any)

RecoveryFunc defines the function passable to CustomRecovery.

type ResponseWriter

type ResponseWriter interface {
	http.ResponseWriter
	http.Hijacker
	http.Flusher
	http.CloseNotifier

	// Status returns the HTTP response status code of the current request.
	Status() int

	// Size returns the number of bytes already written into the response http body.
	// See Written()
	Size() int

	// WriteString writes the string into the response body.
	WriteString(string) (int, error)

	// Written returns true if the response body was already written.
	Written() bool

	// WriteHeaderNow forces to write the http header (status code + headers).
	WriteHeaderNow()

	// Pusher get the http.Pusher for server push
	Pusher() http.Pusher
}

ResponseWriter ...

type RouteInfo

type RouteInfo struct {
	Method      string
	Path        string
	Handler     string
	HandlerFunc HandlerFunc
}

RouteInfo represents a request route's specification which contains method and path and its handler.

type RouterGroup

type RouterGroup struct {
	Handlers HandlersChain
	// contains filtered or unexported fields
}

RouterGroup is used internally to configure router, a RouterGroup is associated with a prefix and an array of handlers (middleware).

func (*RouterGroup) Any

func (group *RouterGroup) Any(relativePath string, handlers ...HandlerFunc) IRoutes

Any registers a route that matches all the HTTP methods. GET, POST, PUT, PATCH, HEAD, OPTIONS, DELETE, CONNECT, TRACE.

func (*RouterGroup) BasePath

func (group *RouterGroup) BasePath() string

BasePath returns the base path of router group. For example, if v := router.Group("/rest/n/v1/api"), v.BasePath() is "/rest/n/v1/api".

func (*RouterGroup) DELETE

func (group *RouterGroup) DELETE(relativePath string, handlers ...HandlerFunc) IRoutes

DELETE is a shortcut for router.Handle("DELETE", path, handlers).

func (*RouterGroup) GET

func (group *RouterGroup) GET(relativePath string, handlers ...HandlerFunc) IRoutes

GET is a shortcut for router.Handle("GET", path, handlers).

func (*RouterGroup) Group

func (group *RouterGroup) Group(relativePath string, handlers ...HandlerFunc) *RouterGroup

Group creates a new router group. You should add all the routes that have common middlewares or the same path prefix. For example, all the routes that use a common middleware for authorization could be grouped.

func (*RouterGroup) HEAD

func (group *RouterGroup) HEAD(relativePath string, handlers ...HandlerFunc) IRoutes

HEAD is a shortcut for router.Handle("HEAD", path, handlers).

func (*RouterGroup) Handle

func (group *RouterGroup) Handle(httpMethod, relativePath string, handlers ...HandlerFunc) IRoutes

Handle registers a new request handle and middleware with the given path and method. The last handler should be the real handler, the other ones should be middleware that can and should be shared among different routes. See the example code in GitHub.

For GET, POST, PUT, PATCH and DELETE requests the respective shortcut functions can be used.

This function is intended for bulk loading and to allow the usage of less frequently used, non-standardized or custom methods (e.g. for internal communication with a proxy).

func (*RouterGroup) Match added in v1.9.0

func (group *RouterGroup) Match(methods []string, relativePath string, handlers ...HandlerFunc) IRoutes

Match registers a route that matches the specified methods that you declared.

func (*RouterGroup) OPTIONS

func (group *RouterGroup) OPTIONS(relativePath string, handlers ...HandlerFunc) IRoutes

OPTIONS is a shortcut for router.Handle("OPTIONS", path, handlers).

func (*RouterGroup) PATCH

func (group *RouterGroup) PATCH(relativePath string, handlers ...HandlerFunc) IRoutes

PATCH is a shortcut for router.Handle("PATCH", path, handlers).

func (*RouterGroup) POST

func (group *RouterGroup) POST(relativePath string, handlers ...HandlerFunc) IRoutes

POST is a shortcut for router.Handle("POST", path, handlers).

func (*RouterGroup) PUT

func (group *RouterGroup) PUT(relativePath string, handlers ...HandlerFunc) IRoutes

PUT is a shortcut for router.Handle("PUT", path, handlers).

func (*RouterGroup) Static

func (group *RouterGroup) Static(relativePath, root string) IRoutes

Static serves files from the given file system root. Internally a http.FileServer is used, therefore http.NotFound is used instead of the Router's NotFound handler. To use the operating system's file system implementation, use :

router.Static("/static", "/var/www")

func (*RouterGroup) StaticFS

func (group *RouterGroup) StaticFS(relativePath string, fs http.FileSystem) IRoutes

StaticFS works just like `Static()` but a custom `http.FileSystem` can be used instead. Gin by default uses: gin.Dir()

func (*RouterGroup) StaticFile

func (group *RouterGroup) StaticFile(relativePath, filepath string) IRoutes

StaticFile registers a single route in order to serve a single file of the local filesystem. router.StaticFile("favicon.ico", "./resources/favicon.ico")

func (*RouterGroup) StaticFileFS added in v1.8.0

func (group *RouterGroup) StaticFileFS(relativePath, filepath string, fs http.FileSystem) IRoutes

StaticFileFS works just like `StaticFile` but a custom `http.FileSystem` can be used instead.. router.StaticFileFS("favicon.ico", "./resources/favicon.ico", Dir{".", false}) Gin by default uses: gin.Dir()

func (*RouterGroup) Use

func (group *RouterGroup) Use(middleware ...HandlerFunc) IRoutes

Use adds middleware to the group, see example code in GitHub.

type RoutesInfo

type RoutesInfo []RouteInfo

RoutesInfo defines a RouteInfo slice.

type Skipper added in v1.10.0

type Skipper func(c *Context) bool

Skipper is a function to skip logs based on provided Context

Directories

Path Synopsis
internal

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