Documentation ¶
Index ¶
- Constants
- Variables
- func CreateTestContext() (c *Context, w *httptest.ResponseRecorder, r *Engine)
- func Dir(root string, listDirectory bool) http.FileSystem
- func DisableBindValidation()
- func IsDebugging() bool
- func Mode() string
- func SetMode(value string)
- type Accounts
- type Context
- func (c *Context) Abort()
- func (c *Context) AbortWithError(code int, err error) *Error
- func (c *Context) AbortWithStatus(code int)
- func (c *Context) Bind(obj interface{}) error
- func (c *Context) BindJSON(obj interface{}) error
- func (c *Context) BindWith(obj interface{}, b binding.Binding) error
- func (c *Context) ClientIP() string
- func (c *Context) ContentType() string
- func (c *Context) Cookie(name string) (string, error)
- func (c *Context) Copy() *Context
- func (c *Context) Data(code int, contentType string, data []byte)
- func (c *Context) Deadline() (deadline time.Time, ok bool)
- func (c *Context) DefaultPostForm(key, defaultValue string) string
- func (c *Context) DefaultQuery(key, defaultValue string) string
- func (c *Context) Done() <-chan struct{}
- func (c *Context) Err() error
- func (c *Context) Error(err error) *Error
- func (c *Context) File(filepath string)
- func (c *Context) Get(key string) (value interface{}, exists bool)
- func (c *Context) GetCookie(name string) (string, error)
- func (c *Context) GetPostForm(key string) (string, bool)
- func (c *Context) GetQuery(key string) (string, bool)
- func (c *Context) HTML(code int, name string, obj interface{})
- func (c *Context) HandlerName() string
- func (c *Context) Header(key, value string)
- func (c *Context) IndentedJSON(code int, obj interface{})
- func (c *Context) IsAborted() bool
- func (c *Context) JSON(code int, obj interface{})
- func (c *Context) MustGet(key string) interface{}
- func (c *Context) Negotiate(code int, config Negotiate)
- func (c *Context) NegotiateFormat(offered ...string) string
- func (c *Context) Next()
- func (c *Context) Param(key string) string
- func (c *Context) PostForm(key string) string
- func (c *Context) Query(key string) string
- func (c *Context) Redirect(code int, location string)
- func (c *Context) Render(code int, r render.Render)
- func (c *Context) SSEvent(name string, message interface{})
- func (c *Context) Set(key string, value interface{})
- func (c *Context) SetAccepted(formats ...string)
- func (c *Context) SetCookie(name string, value string, maxAge int, path string, domain string, secure bool, ...)
- func (c *Context) Status(code int)
- func (c *Context) Stream(step func(w io.Writer) bool)
- func (c *Context) String(code int, format string, values ...interface{})
- func (c *Context) Value(key interface{}) interface{}
- func (c *Context) XML(code int, obj interface{})
- type Engine
- func (engine *Engine) LoadHTMLFiles(files ...string)
- func (engine *Engine) LoadHTMLGlob(pattern string)
- func (engine *Engine) NoMethod(handlers ...HandlerFunc)
- func (engine *Engine) NoRoute(handlers ...HandlerFunc)
- func (engine *Engine) Routes() (routes RoutesInfo)
- func (engine *Engine) Run(addr ...string) (err error)
- func (engine *Engine) RunTLS(addr string, certFile string, keyFile string) (err error)
- func (engine *Engine) RunUnix(file string) (err error)
- func (engine *Engine) ServeHTTP(w http.ResponseWriter, req *http.Request)
- func (engine *Engine) SetHTMLTemplate(templ *template.Template)
- func (engine *Engine) Use(middleware ...HandlerFunc) IRoutes
- type Error
- type ErrorType
- type H
- type HandlerFunc
- func BasicAuth(accounts Accounts) HandlerFunc
- func BasicAuthForRealm(accounts Accounts, realm string) HandlerFunc
- func Bind(val interface{}) HandlerFunc
- func ErrorLogger() HandlerFunc
- func ErrorLoggerT(typ ErrorType) HandlerFunc
- func Logger() HandlerFunc
- func LoggerWithWriter(out io.Writer, notlogged ...string) HandlerFunc
- func Recovery() HandlerFunc
- func RecoveryWithWriter(out io.Writer) HandlerFunc
- func WrapF(f http.HandlerFunc) HandlerFunc
- func WrapH(h http.Handler) HandlerFunc
- type HandlersChain
- type IRouter
- type IRoutes
- type Negotiate
- type Param
- type Params
- type ResponseWriter
- type RouteInfo
- type RouterGroup
- func (group *RouterGroup) Any(relativePath string, handlers ...HandlerFunc) IRoutes
- func (group *RouterGroup) BasePath() string
- func (group *RouterGroup) DELETE(relativePath string, handlers ...HandlerFunc) IRoutes
- func (group *RouterGroup) GET(relativePath string, handlers ...HandlerFunc) IRoutes
- func (group *RouterGroup) Group(relativePath string, handlers ...HandlerFunc) *RouterGroup
- func (group *RouterGroup) HEAD(relativePath string, handlers ...HandlerFunc) IRoutes
- func (group *RouterGroup) Handle(httpMethod, relativePath string, handlers ...HandlerFunc) IRoutes
- func (group *RouterGroup) OPTIONS(relativePath string, handlers ...HandlerFunc) IRoutes
- func (group *RouterGroup) PATCH(relativePath string, handlers ...HandlerFunc) IRoutes
- func (group *RouterGroup) POST(relativePath string, handlers ...HandlerFunc) IRoutes
- func (group *RouterGroup) PUT(relativePath string, handlers ...HandlerFunc) IRoutes
- func (group *RouterGroup) Static(relativePath, root string) IRoutes
- func (group *RouterGroup) StaticFS(relativePath string, fs http.FileSystem) IRoutes
- func (group *RouterGroup) StaticFile(relativePath, filepath string) IRoutes
- func (group *RouterGroup) Use(middleware ...HandlerFunc) IRoutes
- type RoutesInfo
Constants ¶
const ( MIMEJSON = binding.MIMEJSON MIMEHTML = binding.MIMEHTML MIMEXML = binding.MIMEXML MIMEXML2 = binding.MIMEXML2 MIMEPlain = binding.MIMEPlain MIMEPOSTForm = binding.MIMEPOSTForm MIMEMultipartPOSTForm = binding.MIMEMultipartPOSTForm )
Content-Type MIME of the most common data formats
const ( DebugMode string = "debug" ReleaseMode string = "release" TestMode string = "test" )
const AuthUserKey = "user"
const BindKey = "_gin-gonic/gin/bindkey"
const ENV_GIN_MODE = "GIN_MODE"
const Version = "v1.0rc2"
Framework's version
Variables ¶
var DefaultErrorWriter io.Writer = os.Stderr
var DefaultWriter io.Writer = os.Stdout
DefaultWriter is the default io.Writer used the 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 ¶
func CreateTestContext() (c *Context, w *httptest.ResponseRecorder, r *Engine)
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 interally 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()
func IsDebugging ¶
func IsDebugging() bool
IsDebugging returns true if the framework is running in debug mode. Use SetMode(gin.Release) to switch to disable the debug mode.
Types ¶
type Context ¶
type Context struct { Request *http.Request Writer ResponseWriter Params Params Keys map[string]interface{} Errors errorMsgs 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 (*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 ¶
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 ¶
AbortWithStatus calls `Abort()` and writes the headers with the specified status code. For example, a failed attempt to authentificate a request could use: context.AbortWithStatus(401).
func (*Context) Bind ¶
Bind checks the Content-Type to select a binding engine automatically, Depending the "Content-Type" header different bindings are used:
"application/json" --> JSON binding "application/xml" --> XML binding
otherwise --> returns an error If 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 ParseBody() but this method also writes a 400 error if the json is not valid.
func (*Context) BindWith ¶
BindWith binds the passed struct pointer using the specified binding engine. See the binding package.
func (*Context) ClientIP ¶
ClientIP implements a best effort algorithm to return the real client IP, it parses X-Real-IP and X-Forwarded-For in order to work properly with reverse-proxies such us: nginx or haproxy.
func (*Context) ContentType ¶
ContentType returns the Content-Type header of the request.
func (*Context) Copy ¶
Copy returns a copy of the current context that can be safely used outside the request's scope. This have to be used then the context has to be passed to a goroutine.
func (*Context) DefaultPostForm ¶
PostForm 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 ¶
DefaultQuery returns the keyed url query value if it exists, othewise 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) 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.
func (*Context) Get ¶
Get returns the value for the given key, ie: (value, true). If the value does not exists it returns (nil, false)
func (*Context) GetPostForm ¶
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) GetQuery ¶
GetQuery is like Query(), it returns the keyed url query value if it exists `(value, true)` (even when the value is an empty string), othewise 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) HTML ¶
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) HandlerName ¶
HandlerName returns the main handle's name. For example if the handler is "handleGetUsers()", this function will return "main.handleGetUsers"
func (*Context) Header ¶
Header is a 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 ¶
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 to use this only for development propuses since printing pretty JSON is more CPU and bandwidth consuming. Use Context.JSON() instead.
func (*Context) JSON ¶
JSON serializes the given struct as JSON into the response body. It also sets the Content-Type as "application/json".
func (*Context) NegotiateFormat ¶
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 ¶
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" })
func (*Context) PostForm ¶
PostForm returns the specified key from a POST urlencoded form or multipart form when it exists, otherwise it returns an empty string `("")`.
func (*Context) Query ¶
Query returns the keyed url query value if it exists, othewise 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) Set ¶
Set is used to store a new key/value pair exclusivelly for this context. It also lazy initializes c.Keys if it was not used previously.
func (*Context) SetAccepted ¶
type Engine ¶
type Engine struct { RouterGroup HTMLRender render.HTMLRender // 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 // 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 // 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 bool // 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() *Engine
Default returns an Engine instance with the Logger and Recovery middleware already attached.
func New ¶
func New() *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
func (*Engine) LoadHTMLFiles ¶
func (*Engine) LoadHTMLGlob ¶
func (*Engine) NoMethod ¶
func (engine *Engine) NoMethod(handlers ...HandlerFunc)
Sets the handlers called when... TODO
func (*Engine) NoRoute ¶
func (engine *Engine) NoRoute(handlers ...HandlerFunc)
Adds handlers for NoRoute. It return 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 ¶
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) RunTLS ¶
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 ¶
RunUnix attaches the router to a http.Server and starts listening and serving HTTP requests through the specified unix socket (ie. a file). Note: this method will block the calling goroutine indefinitely unless an error happens.
func (*Engine) ServeHTTP ¶
func (engine *Engine) ServeHTTP(w http.ResponseWriter, req *http.Request)
Conforms to the http.Handler interface.
func (*Engine) SetHTMLTemplate ¶
func (*Engine) Use ¶
func (engine *Engine) Use(middleware ...HandlerFunc) IRoutes
Attachs a global middleware to the router. ie. the middleware attached though 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.
type Error ¶
func (*Error) MarshalJSON ¶
Implements the json.Marshaller interface
type H ¶
type H map[string]interface{}
func (H) MarshalXML ¶
Allows type H to be used with xml.Marshal
type HandlerFunc ¶
type HandlerFunc func(*Context)
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 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 interface{}) HandlerFunc
func ErrorLogger ¶
func ErrorLogger() HandlerFunc
func ErrorLoggerT ¶
func ErrorLoggerT(typ ErrorType) HandlerFunc
func Logger ¶
func Logger() HandlerFunc
Instances a Logger middleware that will write the logs to gin.DefaultWriter By default gin.DefaultWriter = os.Stdout
func LoggerWithWriter ¶
func LoggerWithWriter(out io.Writer, notlogged ...string) HandlerFunc
Instance a Logger middleware with the specified writter 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) HandlerFunc
func WrapF ¶
func WrapF(f http.HandlerFunc) HandlerFunc
func WrapH ¶
func WrapH(h http.Handler) HandlerFunc
type HandlersChain ¶
type HandlersChain []HandlerFunc
func (HandlersChain) Last ¶
func (c HandlersChain) Last() HandlerFunc
Last returns the last handler in the chain. ie. the last handler is the main own.
type IRouter ¶
type IRouter interface { IRoutes Group(string, ...HandlerFunc) *RouterGroup }
type IRoutes ¶
type IRoutes interface { Use(...HandlerFunc) IRoutes Handle(string, string, ...HandlerFunc) IRoutes Any(string, ...HandlerFunc) IRoutes GET(string, ...HandlerFunc) IRoutes POST(string, ...HandlerFunc) IRoutes DELETE(string, ...HandlerFunc) IRoutes PATCH(string, ...HandlerFunc) IRoutes PUT(string, ...HandlerFunc) IRoutes OPTIONS(string, ...HandlerFunc) IRoutes HEAD(string, ...HandlerFunc) IRoutes StaticFile(string, string) IRoutes Static(string, string) IRoutes StaticFS(string, http.FileSystem) IRoutes }
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.
type ResponseWriter ¶
type ResponseWriter interface { http.ResponseWriter http.Hijacker http.Flusher http.CloseNotifier // Returns the HTTP response status code of the current request. Status() int // Returns the number of bytes already written into the response http body. // See Written() Size() int // Writes the string into the response body. WriteString(string) (int, error) // Returns true if the response body was already written. Written() bool // Forces to write the http header (status code + headers). WriteHeaderNow() }
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
func (*RouterGroup) DELETE ¶
func (group *RouterGroup) DELETE(relativePath string, handlers ...HandlerFunc) IRoutes
DELETE is a shortcut for router.Handle("DELETE", path, handle)
func (*RouterGroup) GET ¶
func (group *RouterGroup) GET(relativePath string, handlers ...HandlerFunc) IRoutes
GET is a shortcut for router.Handle("GET", path, handle)
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 middlwares or the same path prefix. For example, all the routes that use a common middlware 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, handle)
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) OPTIONS ¶
func (group *RouterGroup) OPTIONS(relativePath string, handlers ...HandlerFunc) IRoutes
OPTIONS is a shortcut for router.Handle("OPTIONS", path, handle)
func (*RouterGroup) PATCH ¶
func (group *RouterGroup) PATCH(relativePath string, handlers ...HandlerFunc) IRoutes
PATCH is a shortcut for router.Handle("PATCH", path, handle)
func (*RouterGroup) POST ¶
func (group *RouterGroup) POST(relativePath string, handlers ...HandlerFunc) IRoutes
POST is a shortcut for router.Handle("POST", path, handle)
func (*RouterGroup) PUT ¶
func (group *RouterGroup) PUT(relativePath string, handlers ...HandlerFunc) IRoutes
PUT is a shortcut for router.Handle("PUT", path, handle)
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 user: gin.Dir()
func (*RouterGroup) StaticFile ¶
func (group *RouterGroup) StaticFile(relativePath, filepath string) IRoutes
StaticFile registers a single route in order to server a single file of the local filesystem. router.StaticFile("favicon.ico", "./resources/favicon.ico")
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