echo

package module
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 Go to latest Published: Nov 9, 2016 License: MIT Imports: 22 Imported by: 1

README

Echo GoDoc License Build Status Coverage Status Twitter

Don't forget to try the upcoming v3 tracked here

Fast and unfancy HTTP server framework for Go (Golang). Up to 10x faster than the rest.

Feature Overview

  • Optimized HTTP router which smartly prioritize routes
  • Build robust and scalable RESTful APIs
  • Run with standard HTTP server or FastHTTP server
  • Group APIs
  • Extensible middleware framework
  • Define middleware at root, group or route level
  • Data binding for JSON, XML and form payload
  • Handy functions to send variety of HTTP responses
  • Centralized HTTP error handling
  • Template rendering with any template engine
  • Define your format for the logger
  • Highly customizable

Performance

Performance

Quick Start

Installation

Echo is developed and tested using Go 1.6.x and 1.7.x

$ go get -u github.com/labstack/echo

Ideally, you should rely on a package manager like glide or govendor to use a specific version of Echo.

Hello, World!

Create server.go

package main

import (
	"net/http"
	"github.com/labstack/echo"
	"github.com/labstack/echo/engine/standard"
)

func main() {
	e := echo.New()
	e.GET("/", func(c echo.Context) error {
		return c.String(http.StatusOK, "Hello, World!")
	})
	e.Run(standard.New(":1323"))
}

Start server

$ go run server.go

Browse to http://localhost:1323 and you should see Hello, World! on the page.

Routing
e.POST("/users", saveUser)
e.GET("/users/:id", getUser)
e.PUT("/users/:id", updateUser)
e.DELETE("/users/:id", deleteUser)
Path Parameters
// e.GET("/users/:id", getUser)
func getUser(c echo.Context) error {
	// User ID from path `users/:id`
	id := c.Param("id")
	return c.String(http.StatusOK, id)
}

Browse to http://localhost:1323/users/Joe and you should see 'Joe' on the page.

Query Parameters

/show?team=x-men&member=wolverine

//e.GET("/show", show)
func show(c echo.Context) error {
	// Get team and member from the query string
	team := c.QueryParam("team")
	member := c.QueryParam("member")
	return c.String(http.StatusOK, "team:" + team + ", member:" + member)
}

Browse to http://localhost:1323/show?team=x-men&member=wolverine and you should see 'team:x-men, member:wolverine' on the page.

Form application/x-www-form-urlencoded

POST /save

name value
name Joe Smith
email joe@labstack.com 
// e.POST("/save", save)
func save(c echo.Context) error {
	// Get name and email
	name := c.FormValue("name")
	email := c.FormValue("email")
	return c.String(http.StatusOK, "name:" + name + ", email:" + email)
}

Run the following command.

$ curl -F "name=Joe Smith" -F "email=joe@labstack.com" http://localhost:1323/save
// => name:Joe Smith, email:joe@labstack.com
Form multipart/form-data

POST /save

name value
name Joe Smith
avatar avatar 
// e.POST("/save", save)
func save(c echo.Context) error {
	// Get name
	name := c.FormValue("name")
	// Get avatar
	avatar, err := c.FormFile("avatar")
	if err != nil {
		return err
	}

	// Source
	src, err := avatar.Open()
	if err != nil {
		return err
	}
	defer src.Close()

	// Destination
	dst, err := os.Create(avatar.Filename)
	if err != nil {
		return err
	}
	defer dst.Close()

	// Copy
	if _, err = io.Copy(dst, src); err != nil {
		return err
	}

	return c.HTML(http.StatusOK, "<b>Thank you! " + name + "</b>")
}

Run the following command.

$ curl -F "name=Joe Smith" -F "avatar=@/path/to/your/avatar.png" http://localhost:1323/save
// => <b>Thank you! Joe Smith</b>

For checking uploaded image, run the following command.

cd <project directory>
ls avatar.png
// => avatar.png
Handling Request
  • Bind JSON or XML or form payload into Go struct based on Content-Type request header.
  • Render response as JSON or XML with status code.
type User struct {
	Name  string `json:"name" xml:"name" form:"name"`
	Email string `json:"email" xml:"email" form:"email"`
}

e.POST("/users", func(c echo.Context) error {
	u := new(User)
	if err := c.Bind(u); err != nil {
		return err
	}
	return c.JSON(http.StatusCreated, u)
	// or
	// return c.XML(http.StatusCreated, u)
})
Static Content

Server any file from static directory for path /static/*.

e.Static("/static", "static")
Template Rendering
Middleware
// Root level middleware
e.Use(middleware.Logger())
e.Use(middleware.Recover())

// Group level middleware
g := e.Group("/admin")
g.Use(middleware.BasicAuth(func(username, password string) bool {
	if username == "joe" && password == "secret" {
		return true
	}
	return false
}))

// Route level middleware
track := func(next echo.HandlerFunc) echo.HandlerFunc {
	return func(c echo.Context) error {
		println("request to /users")
		return next(c)
	}
}
e.GET("/users", func(c echo.Context) error {
	return c.String(http.StatusOK, "/users")
}, track)
Built-in Middleware
Middleware Description
BodyLimit Limit request body
Logger Log HTTP requests
Recover Recover from panics
Gzip Send gzip HTTP response
BasicAuth HTTP basic authentication
JWTAuth JWT authentication
Secure Protection against attacks
CORS Cross-Origin Resource Sharing
CSRF Cross-Site Request Forgery
Static Serve static files
HTTPSRedirect Redirect HTTP requests to HTTPS
HTTPSWWWRedirect Redirect HTTP requests to WWW HTTPS
WWWRedirect Redirect non WWW requests to WWW
NonWWWRedirect Redirect WWW requests to non WWW
AddTrailingSlash Add trailing slash to the request URI
RemoveTrailingSlash Remove trailing slash from the request URI
MethodOverride Override request method
Third-party Middleware
Middleware Description
echoperm Keeping track of users, login states and permissions.
echopprof Adapt net/http/pprof to labstack/echo.
Next
Need help?

Support Us

Contribute

Use issues for everything

  • Report issues
  • Discuss on chat before sending a pull request
  • Suggest new features or enhancements
  • Improve/fix documentation

Credits

License

MIT

Documentation

Overview

Package echo implements a fast and unfancy HTTP server framework for Go (Golang).

Example: 

package main

import (
    "net/http"

    "github.com/labstack/echo"
    "github.com/labstack/echo/engine/standard"
    "github.com/labstack/echo/middleware"
)

// Handler
func hello(c echo.Context) error {
    return c.String(http.StatusOK, "Hello, World!")
}

func main() {
    // Echo instance
    e := echo.New()

    // Middleware
    e.Use(middleware.Logger())
    e.Use(middleware.Recover())

    // Routes
    e.GET("/", hello)

    // Start server
    e.Run(standard.New(":1323"))
}

Learn more at https://echo.labstack.com

Index

Constants

View Source 
const (
	CONNECT = "CONNECT"
	DELETE  = "DELETE"
	GET     = "GET"
	HEAD    = "HEAD"
	OPTIONS = "OPTIONS"
	PATCH   = "PATCH"
	POST    = "POST"
	PUT     = "PUT"
	TRACE   = "TRACE"
)

HTTP methods

View Source 
const (
	MIMEApplicationJSON                  = "application/json"
	MIMEApplicationJSONCharsetUTF8       = MIMEApplicationJSON + "; " + charsetUTF8
	MIMEApplicationJavaScript            = "application/javascript"
	MIMEApplicationJavaScriptCharsetUTF8 = MIMEApplicationJavaScript + "; " + charsetUTF8
	MIMEApplicationXML                   = "application/xml"
	MIMEApplicationXMLCharsetUTF8        = MIMEApplicationXML + "; " + charsetUTF8
	MIMEApplicationForm                  = "application/x-www-form-urlencoded"
	MIMEApplicationProtobuf              = "application/protobuf"
	MIMEApplicationMsgpack               = "application/msgpack"
	MIMETextHTML                         = "text/html"
	MIMETextHTMLCharsetUTF8              = MIMETextHTML + "; " + charsetUTF8
	MIMETextPlain                        = "text/plain"
	MIMETextPlainCharsetUTF8             = MIMETextPlain + "; " + charsetUTF8
	MIMEMultipartForm                    = "multipart/form-data"
	MIMEOctetStream                      = "application/octet-stream"
)

MIME types

View Source 
const (
	HeaderAcceptEncoding                = "Accept-Encoding"
	HeaderAllow                         = "Allow"
	HeaderAuthorization                 = "Authorization"
	HeaderContentDisposition            = "Content-Disposition"
	HeaderContentEncoding               = "Content-Encoding"
	HeaderContentLength                 = "Content-Length"
	HeaderContentType                   = "Content-Type"
	HeaderCookie                        = "Cookie"
	HeaderSetCookie                     = "Set-Cookie"
	HeaderIfModifiedSince               = "If-Modified-Since"
	HeaderLastModified                  = "Last-Modified"
	HeaderLocation                      = "Location"
	HeaderUpgrade                       = "Upgrade"
	HeaderVary                          = "Vary"
	HeaderWWWAuthenticate               = "WWW-Authenticate"
	HeaderXForwardedProto               = "X-Forwarded-Proto"
	HeaderXHTTPMethodOverride           = "X-HTTP-Method-Override"
	HeaderXForwardedFor                 = "X-Forwarded-For"
	HeaderXRealIP                       = "X-Real-IP"
	HeaderServer                        = "Server"
	HeaderOrigin                        = "Origin"
	HeaderAccessControlRequestMethod    = "Access-Control-Request-Method"
	HeaderAccessControlRequestHeaders   = "Access-Control-Request-Headers"
	HeaderAccessControlAllowOrigin      = "Access-Control-Allow-Origin"
	HeaderAccessControlAllowMethods     = "Access-Control-Allow-Methods"
	HeaderAccessControlAllowHeaders     = "Access-Control-Allow-Headers"
	HeaderAccessControlAllowCredentials = "Access-Control-Allow-Credentials"
	HeaderAccessControlExposeHeaders    = "Access-Control-Expose-Headers"
	HeaderAccessControlMaxAge           = "Access-Control-Max-Age"

	// Security
	HeaderStrictTransportSecurity = "Strict-Transport-Security"
	HeaderXContentTypeOptions     = "X-Content-Type-Options"
	HeaderXXSSProtection          = "X-XSS-Protection"
	HeaderXFrameOptions           = "X-Frame-Options"
	HeaderContentSecurityPolicy   = "Content-Security-Policy"
	HeaderXCSRFToken              = "X-CSRF-Token"
)

Headers

Variables

View Source 
var (
	ErrUnsupportedMediaType        = NewHTTPError(http.StatusUnsupportedMediaType)
	ErrNotFound                    = NewHTTPError(http.StatusNotFound)
	ErrUnauthorized                = NewHTTPError(http.StatusUnauthorized)
	ErrMethodNotAllowed            = NewHTTPError(http.StatusMethodNotAllowed)
	ErrStatusRequestEntityTooLarge = NewHTTPError(http.StatusRequestEntityTooLarge)
	ErrRendererNotRegistered       = errors.New("renderer not registered")
	ErrInvalidRedirectCode         = errors.New("invalid redirect status code")
	ErrCookieNotFound              = errors.New("cookie not found")
)

Errors

View Source 
var (
	NotFoundHandler = func(c Context) error {
		return ErrNotFound
	}

	MethodNotAllowedHandler = func(c Context) error {
		return ErrMethodNotAllowed
	}
)

Error handlers

Functions

func ContentTypeByExtension 

func ContentTypeByExtension(name string) (t string)

ContentTypeByExtension returns the MIME type associated with the file based on its extension. It returns `application/octet-stream` incase MIME type is not found.

Types

type Binder 

type Binder interface {
	Bind(interface{}, Context) error
}

Binder is the interface that wraps the Bind method.

type Context 

type Context interface {
	// StdContext returns `context.Context`.
	StdContext() gcontext.Context

	// SetStdContext sets `context.Context`.
	SetStdContext(gcontext.Context)

	// Request returns `engine.Request` interface.
	Request() engine.Request

	// Request returns `engine.Response` interface.
	Response() engine.Response

	// Path returns the registered path for the handler.
	Path() string

	// SetPath sets the registered path for the handler.
	SetPath(string)

	// P returns path parameter by index.
	P(int) string

	// Param returns path parameter by name.
	Param(string) string

	// ParamNames returns path parameter names.
	ParamNames() []string

	// SetParamNames sets path parameter names.
	SetParamNames(...string)

	// ParamValues returns path parameter values.
	ParamValues() []string

	// SetParamValues sets path parameter values.
	SetParamValues(...string)

	// QueryParam returns the query param for the provided name. It is an alias
	// for `engine.URL#QueryParam()`.
	QueryParam(string) string

	// QueryParams returns the query parameters as map.
	// It is an alias for `engine.URL#QueryParams()`.
	QueryParams() map[string][]string

	// FormValue returns the form field value for the provided name. It is an
	// alias for `engine.Request#FormValue()`.
	FormValue(string) string

	// FormParams returns the form parameters as map.
	// It is an alias for `engine.Request#FormParams()`.
	FormParams() map[string][]string

	// FormFile returns the multipart form file for the provided name. It is an
	// alias for `engine.Request#FormFile()`.
	FormFile(string) (*multipart.FileHeader, error)

	// MultipartForm returns the multipart form.
	// It is an alias for `engine.Request#MultipartForm()`.
	MultipartForm() (*multipart.Form, error)

	// Cookie returns the named cookie provided in the request.
	// It is an alias for `engine.Request#Cookie()`.
	Cookie(string) (engine.Cookie, error)

	// SetCookie adds a `Set-Cookie` header in HTTP response.
	// It is an alias for `engine.Response#SetCookie()`.
	SetCookie(engine.Cookie)

	// Cookies returns the HTTP cookies sent with the request.
	// It is an alias for `engine.Request#Cookies()`.
	Cookies() []engine.Cookie

	// Get retrieves data from the context.
	Get(string) interface{}

	// Set saves data in the context.
	Set(string, interface{})

	// Bind binds the request body into provided type `i`. The default binder
	// does it based on Content-Type header.
	Bind(interface{}) error

	// Render renders a template with data and sends a text/html response with status
	// code. Templates can be registered using `Echo.SetRenderer()`.
	Render(int, string, interface{}) error

	// HTML sends an HTTP response with status code.
	HTML(int, string) error

	// String sends a string response with status code.
	String(int, string) error

	// JSON sends a JSON response with status code.
	JSON(int, interface{}) error

	// JSONBlob sends a JSON blob response with status code.
	JSONBlob(int, []byte) error

	// JSONP sends a JSONP response with status code. It uses `callback` to construct
	// the JSONP payload.
	JSONP(int, string, interface{}) error

	// JSONPBlob sends a JSONP blob response with status code. It uses `callback`
	// to construct the JSONP payload.
	JSONPBlob(int, string, []byte) error

	// XML sends an XML response with status code.
	XML(int, interface{}) error

	// XMLBlob sends a XML blob response with status code.
	XMLBlob(int, []byte) error

	// Blob sends a blob response with status code and content type.
	Blob(int, string, []byte) error

	// Stream sends a streaming response with status code and content type.
	Stream(int, string, io.Reader) error

	// File sends a response with the content of the file.
	File(string) error

	// Attachment sends a response from `io.ReaderSeeker` as attachment, prompting
	// client to save the file.
	Attachment(io.ReadSeeker, string) error

	// Inline sends a response from `io.ReaderSeeker` as inline, opening
	// the file in the browser.
	Inline(io.ReadSeeker, string) error

	// NoContent sends a response with no body and a status code.
	NoContent(int) error

	// Redirect redirects the request with status code.
	Redirect(int, string) error

	// Error invokes the registered HTTP error handler. Generally used by middleware.
	Error(err error)

	// Handler returns the matched handler by router.
	Handler() HandlerFunc

	// SetHandler sets the matched handler by router.
	SetHandler(HandlerFunc)

	// Logger returns the `Logger` instance.
	Logger() log.Logger

	// Echo returns the `Echo` instance.
	Echo() *Echo

	// ServeContent sends static content from `io.Reader` and handles caching
	// via `If-Modified-Since` request header. It automatically sets `Content-Type`
	// and `Last-Modified` response headers.
	ServeContent(io.ReadSeeker, string, time.Time) error

	// Reset resets the context after request completes. It must be called along
	// with `Echo#AcquireContext()` and `Echo#ReleaseContext()`.
	// See `Echo#ServeHTTP()`
	Reset(engine.Request, engine.Response)
}

Context represents the context of the current HTTP request. It holds request and response objects, path, path parameters, data and registered handler. 

type Cookie struct {
	// contains filtered or unexported fields
}

Cookie defines the HTTP cookie.

func (*Cookie) Domain 

func (c *Cookie) Domain() string

Domain returns the cookie domain.

func (*Cookie) Expires 

func (c *Cookie) Expires() time.Time

Expires returns the cookie expiry time.

func (*Cookie) HTTPOnly 

func (c *Cookie) HTTPOnly() bool

HTTPOnly indicates if cookie is HTTPOnly.

func (*Cookie) Name 

func (c *Cookie) Name() string

Name returns the cookie name.

func (*Cookie) Path 

func (c *Cookie) Path() string

Path returns the cookie path.

func (*Cookie) Secure 

func (c *Cookie) Secure() bool

Secure indicates if cookie is Secure.

func (*Cookie) SetDomain 

func (c *Cookie) SetDomain(domain string)

SetDomain sets the cookie domain.

func (*Cookie) SetExpires 

func (c *Cookie) SetExpires(expires time.Time)

SetExpires sets the cookie expiry time.

func (*Cookie) SetHTTPOnly 

func (c *Cookie) SetHTTPOnly(httpOnly bool)

SetHTTPOnly sets the cookie as HTTPOnly.

func (*Cookie) SetName 

func (c *Cookie) SetName(name string)

SetName sets cookie name.

func (*Cookie) SetPath 

func (c *Cookie) SetPath(path string)

SetPath sets the cookie path.

func (*Cookie) SetSecure 

func (c *Cookie) SetSecure(secure bool)

SetSecure sets the cookie as Secure.

func (*Cookie) SetValue 

func (c *Cookie) SetValue(value string)

SetValue sets the cookie value.

func (*Cookie) Value 

func (c *Cookie) Value() string

Value returns the cookie value.

type Echo 

type Echo struct {
	// contains filtered or unexported fields
}

Echo is the top-level framework instance.

func New 

func New() (e *Echo)

New creates an instance of Echo.

func (*Echo) AcquireContext 

func (e *Echo) AcquireContext() Context

AcquireContext returns an empty `Context` instance from the pool. You must be return the context by calling `ReleaseContext()`.

func (*Echo) Any 

func (e *Echo) Any(path string, handler HandlerFunc, middleware ...MiddlewareFunc)

Any registers a new route for all HTTP methods and path with matching handler in the router with optional route-level middleware.

func (*Echo) Binder 

func (e *Echo) Binder() Binder

Binder returns the binder instance.

func (*Echo) CONNECT 

func (e *Echo) CONNECT(path string, h HandlerFunc, m ...MiddlewareFunc)

CONNECT registers a new CONNECT route for a path with matching handler in the router with optional route-level middleware.

func (*Echo) Connect 

func (e *Echo) Connect(path string, h HandlerFunc, m ...MiddlewareFunc)

Connect is deprecated, use `CONNECT()` instead.

func (*Echo) DELETE 

func (e *Echo) DELETE(path string, h HandlerFunc, m ...MiddlewareFunc)

DELETE registers a new DELETE route for a path with matching handler in the router with optional route-level middleware.

func (*Echo) Debug 

func (e *Echo) Debug() bool

Debug returns debug mode (enabled or disabled).

func (*Echo) DefaultHTTPErrorHandler 

func (e *Echo) DefaultHTTPErrorHandler(err error, c Context)

DefaultHTTPErrorHandler invokes the default HTTP error handler.

func (*Echo) Delete 

func (e *Echo) Delete(path string, h HandlerFunc, m ...MiddlewareFunc)

Delete is deprecated, use `DELETE()` instead.

func (*Echo) File 

func (e *Echo) File(path, file string)

File registers a new route with path to serve a static file.

func (*Echo) GET 

func (e *Echo) GET(path string, h HandlerFunc, m ...MiddlewareFunc)

GET registers a new GET route for a path with matching handler in the router with optional route-level middleware.

func (*Echo) Get 

func (e *Echo) Get(path string, h HandlerFunc, m ...MiddlewareFunc)

Get is deprecated, use `GET()` instead.

func (*Echo) Group 

func (e *Echo) Group(prefix string, m ...MiddlewareFunc) (g *Group)

Group creates a new router group with prefix and optional group-level middleware.

func (*Echo) HEAD 

func (e *Echo) HEAD(path string, h HandlerFunc, m ...MiddlewareFunc)

HEAD registers a new HEAD route for a path with matching handler in the router with optional route-level middleware.

func (*Echo) Head 

func (e *Echo) Head(path string, h HandlerFunc, m ...MiddlewareFunc)

Head is deprecated, use `HEAD()` instead.

func (*Echo) Logger 

func (e *Echo) Logger() log.Logger

Logger returns the logger instance.

func (*Echo) Match 

func (e *Echo) Match(methods []string, path string, handler HandlerFunc, middleware ...MiddlewareFunc)

Match registers a new route for multiple HTTP methods and path with matching handler in the router with optional route-level middleware.

func (*Echo) NewContext 

func (e *Echo) NewContext(req engine.Request, res engine.Response) Context

NewContext returns a Context instance.

func (*Echo) OPTIONS 

func (e *Echo) OPTIONS(path string, h HandlerFunc, m ...MiddlewareFunc)

OPTIONS registers a new OPTIONS route for a path with matching handler in the router with optional route-level middleware.

func (*Echo) Options 

func (e *Echo) Options(path string, h HandlerFunc, m ...MiddlewareFunc)

Options is deprecated, use `OPTIONS()` instead.

func (*Echo) PATCH 

func (e *Echo) PATCH(path string, h HandlerFunc, m ...MiddlewareFunc)

PATCH registers a new PATCH route for a path with matching handler in the router with optional route-level middleware.

func (*Echo) POST 

func (e *Echo) POST(path string, h HandlerFunc, m ...MiddlewareFunc)

POST registers a new POST route for a path with matching handler in the router with optional route-level middleware.

func (*Echo) PUT 

func (e *Echo) PUT(path string, h HandlerFunc, m ...MiddlewareFunc)

PUT registers a new PUT route for a path with matching handler in the router with optional route-level middleware.

func (*Echo) Patch 

func (e *Echo) Patch(path string, h HandlerFunc, m ...MiddlewareFunc)

Patch is deprecated, use `PATCH()` instead.

func (*Echo) Post 

func (e *Echo) Post(path string, h HandlerFunc, m ...MiddlewareFunc)

Post is deprecated, use `POST()` instead.

func (*Echo) Pre 

func (e *Echo) Pre(middleware ...MiddlewareFunc)

Pre adds middleware to the chain which is run before router.

func (*Echo) Put 

func (e *Echo) Put(path string, h HandlerFunc, m ...MiddlewareFunc)

Put is deprecated, use `PUT()` instead.

func (*Echo) ReleaseContext 

func (e *Echo) ReleaseContext(c Context)

ReleaseContext returns the `Context` instance back to the pool. You must call it after `AcquireContext()`.

func (*Echo) Router 

func (e *Echo) Router() *Router

Router returns router.

func (*Echo) Routes 

func (e *Echo) Routes() []Route

Routes returns the registered routes.

func (*Echo) Run 

func (e *Echo) Run(s engine.Server) error

Run starts the HTTP server.

func (*Echo) ServeHTTP 

func (e *Echo) ServeHTTP(req engine.Request, res engine.Response)

func (*Echo) SetBinder 

func (e *Echo) SetBinder(b Binder)

SetBinder registers a custom binder. It's invoked by `Context#Bind()`.

func (*Echo) SetDebug 

func (e *Echo) SetDebug(on bool)

SetDebug enables/disables debug mode.

func (*Echo) SetHTTPErrorHandler 

func (e *Echo) SetHTTPErrorHandler(h HTTPErrorHandler)

SetHTTPErrorHandler registers a custom Echo.HTTPErrorHandler.

func (*Echo) SetLogLevel 

func (e *Echo) SetLogLevel(l glog.Lvl)

SetLogLevel sets the log level for the logger. Default value ERROR.

func (*Echo) SetLogOutput 

func (e *Echo) SetLogOutput(w io.Writer)

SetLogOutput sets the output destination for the logger. Default value is `os.Std*`

func (*Echo) SetLogger 

func (e *Echo) SetLogger(l log.Logger)

SetLogger defines a custom logger.

func (*Echo) SetRenderer 

func (e *Echo) SetRenderer(r Renderer)

SetRenderer registers an HTML template renderer. It's invoked by `Context#Render()`.

func (*Echo) Static 

func (e *Echo) Static(prefix, root string)

Static registers a new route with path prefix to serve static files from the provided root directory.

func (*Echo) Stop added in v2.2.0 

func (e *Echo) Stop() error

Stop stops the HTTP server.

func (*Echo) TRACE 

func (e *Echo) TRACE(path string, h HandlerFunc, m ...MiddlewareFunc)

TRACE registers a new TRACE route for a path with matching handler in the router with optional route-level middleware.

func (*Echo) Trace 

func (e *Echo) Trace(path string, h HandlerFunc, m ...MiddlewareFunc)

Trace is deprecated, use `TRACE()` instead.

func (*Echo) URI 

func (e *Echo) URI(handler HandlerFunc, params ...interface{}) string

URI generates a URI from handler.

func (*Echo) URL 

func (e *Echo) URL(h HandlerFunc, params ...interface{}) string

URL is an alias for `URI` function.

func (*Echo) Use 

func (e *Echo) Use(middleware ...MiddlewareFunc)

Use adds middleware to the chain which is run after router.

type Group 

type Group struct {
	// contains filtered or unexported fields
}

Group is a set of sub-routes for a specified route. It can be used for inner routes that share a common middlware or functionality that should be separate from the parent echo instance while still inheriting from it.

func (*Group) Any 

func (g *Group) Any(path string, handler HandlerFunc, middleware ...MiddlewareFunc)

Any implements `Echo#Any()` for sub-routes within the Group.

func (*Group) CONNECT 

func (g *Group) CONNECT(path string, h HandlerFunc, m ...MiddlewareFunc)

CONNECT implements `Echo#CONNECT()` for sub-routes within the Group.

func (*Group) Connect 

func (g *Group) Connect(path string, h HandlerFunc, m ...MiddlewareFunc)

Connect is deprecated, use `CONNECT()` instead.

func (*Group) DELETE 

func (g *Group) DELETE(path string, h HandlerFunc, m ...MiddlewareFunc)

DELETE implements `Echo#DELETE()` for sub-routes within the Group.

func (*Group) Delete 

func (g *Group) Delete(path string, h HandlerFunc, m ...MiddlewareFunc)

Delete is deprecated, use `DELETE()` instead.

func (*Group) File 

func (g *Group) File(path, file string)

File implements `Echo#File()` for sub-routes within the Group.

func (*Group) GET 

func (g *Group) GET(path string, h HandlerFunc, m ...MiddlewareFunc)

GET implements `Echo#GET()` for sub-routes within the Group.

func (*Group) Get 

func (g *Group) Get(path string, h HandlerFunc, m ...MiddlewareFunc)

Get is deprecated, use `GET()` instead.

func (*Group) Group 

func (g *Group) Group(prefix string, middleware ...MiddlewareFunc) *Group

Group creates a new sub-group with prefix and optional sub-group-level middleware.

func (*Group) HEAD 

func (g *Group) HEAD(path string, h HandlerFunc, m ...MiddlewareFunc)

HEAD implements `Echo#HEAD()` for sub-routes within the Group.

func (*Group) Head 

func (g *Group) Head(path string, h HandlerFunc, m ...MiddlewareFunc)

Head is deprecated, use `HEAD()` instead.

func (*Group) Match 

func (g *Group) Match(methods []string, path string, handler HandlerFunc, middleware ...MiddlewareFunc)

Match implements `Echo#Match()` for sub-routes within the Group.

func (*Group) OPTIONS 

func (g *Group) OPTIONS(path string, h HandlerFunc, m ...MiddlewareFunc)

OPTIONS implements `Echo#OPTIONS()` for sub-routes within the Group.

func (*Group) Options 

func (g *Group) Options(path string, h HandlerFunc, m ...MiddlewareFunc)

Options is deprecated, use `OPTIONS()` instead.

func (*Group) PATCH 

func (g *Group) PATCH(path string, h HandlerFunc, m ...MiddlewareFunc)

PATCH implements `Echo#PATCH()` for sub-routes within the Group.

func (*Group) POST 

func (g *Group) POST(path string, h HandlerFunc, m ...MiddlewareFunc)

POST implements `Echo#POST()` for sub-routes within the Group.

func (*Group) PUT 

func (g *Group) PUT(path string, h HandlerFunc, m ...MiddlewareFunc)

PUT implements `Echo#PUT()` for sub-routes within the Group.

func (*Group) Patch 

func (g *Group) Patch(path string, h HandlerFunc, m ...MiddlewareFunc)

Patch is deprecated, use `PATCH()` instead.

func (*Group) Post 

func (g *Group) Post(path string, h HandlerFunc, m ...MiddlewareFunc)

Post is deprecated, use `POST()` instead.

func (*Group) Put 

func (g *Group) Put(path string, h HandlerFunc, m ...MiddlewareFunc)

Put is deprecated, use `PUT()` instead.

func (*Group) Static 

func (g *Group) Static(prefix, root string)

Static implements `Echo#Static()` for sub-routes within the Group.

func (*Group) TRACE 

func (g *Group) TRACE(path string, h HandlerFunc, m ...MiddlewareFunc)

TRACE implements `Echo#TRACE()` for sub-routes within the Group.

func (*Group) Trace 

func (g *Group) Trace(path string, h HandlerFunc, m ...MiddlewareFunc)

Trace is deprecated, use `TRACE()` instead.

func (*Group) Use 

func (g *Group) Use(m ...MiddlewareFunc)

Use implements `Echo#Use()` for sub-routes within the Group.

type HTTPError 

type HTTPError struct {
	Code    int
	Message string
}

HTTPError represents an error that occurred while handling a request.

func NewHTTPError 

func NewHTTPError(code int, msg ...string) *HTTPError

NewHTTPError creates a new HTTPError instance.

func (*HTTPError) Error 

func (e *HTTPError) Error() string

Error makes it compatible with `error` interface.

type HTTPErrorHandler 

type HTTPErrorHandler func(error, Context)

HTTPErrorHandler is a centralized HTTP error handler.

type HandlerFunc 

type HandlerFunc func(Context) error

HandlerFunc defines a function to server HTTP requests.

type MiddlewareFunc 

type MiddlewareFunc func(HandlerFunc) HandlerFunc

MiddlewareFunc defines a function to process middleware.

func WrapMiddleware 

func WrapMiddleware(h HandlerFunc) MiddlewareFunc

WrapMiddleware wrap `echo.HandlerFunc` into `echo.MiddlewareFunc`.

type Renderer 

type Renderer interface {
	Render(io.Writer, string, interface{}, Context) error
}

Renderer is the interface that wraps the Render function.

type Route 

type Route struct {
	Method  string
	Path    string
	Handler string
}

Route contains a handler and information for matching against requests.

type Router 

type Router struct {
	// contains filtered or unexported fields
}

Router is the registry of all registered routes for an `Echo` instance for request matching and URL path parameter parsing.

func NewRouter 

func NewRouter(e *Echo) *Router

NewRouter returns a new Router instance.

func (*Router) Add 

func (r *Router) Add(method, path string, h HandlerFunc)

Add registers a new route for method and path with matching handler.

func (*Router) Find 

func (r *Router) Find(method, path string, context Context)

Find lookup a handler registed for method and path. It also parses URL for path parameters and load them into context.

For performance:

- Get context from `Echo#AcquireContext()` - Reset it `Context#Reset()` - Return it `Echo#ReleaseContext()`.

type Validator 

type Validator interface {
	Validate() error
}

Validator is the interface that wraps the Validate function.

Source Files

View all Source files

Directories

Path Synopsis
fasthttp
standard
test
recipe
cors
crud
embed-resources
file-upload/multiple
file-upload/single
google-app-engine
graceful-shutdown/grace
graceful-shutdown/graceful
hello-world
http2
jsonp
jwt/custom-claims
jwt/map-claims
middleware
streaming-response
subdomains
websocket/gorilla
websocket/net

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