echo

package module
v4.2.3 Latest Latest
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 Go to latest Published: Apr 22, 2021 License: MIT Imports: 30 Imported by: 1

README

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Supported Go versions

As of version 4.0.0, Echo is available as a Go module. Therefore a Go version capable of understanding /vN suffixed imports is required:

  • 1.9.7+
  • 1.10.3+
  • 1.14+

Any of these versions will allow you to import Echo as github.com/labstack/echo/v4 which is the recommended way of using Echo going forward.

For older versions, please use the latest v3 tag.

Feature Overview

  • Optimized HTTP router which smartly prioritize routes
  • Build robust and scalable RESTful APIs
  • 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
  • Automatic TLS via Let’s Encrypt
  • HTTP/2 support

Benchmarks

Date: 2020/11/11
Source: https://github.com/vishr/web-framework-benchmark
Lower is better!

The benchmarks above were run on an Intel(R) Core(TM) i7-6820HQ CPU @ 2.70GHz

Guide

Installation

// go get github.com/labstack/echo/{version}
go get github.com/labstack/echo/v4

Example

package main

import (
  "net/http"
  "github.com/labstack/echo/v4"
  "github.com/labstack/echo/v4/middleware"
)

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

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

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

  // Start server
  e.Logger.Fatal(e.Start(":1323"))
}

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

Help

Contribute

Use issues for everything

  • For a small change, just send a PR.
  • For bigger changes open an issue for discussion before sending a PR.
  • PR should have:
    • Test case
    • Documentation
    • Example (If it makes sense)
  • You can also contribute by:
    • Reporting issues
    • Suggesting new features or enhancements
    • Improve/fix documentation

Credits

License

MIT

Documentation

Overview

Package echo implements high performance, minimalist Go web framework.

Example: 

package main

import (
  "net/http"

  "github.com/labstack/echo/v4"
  "github.com/labstack/echo/v4/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.Logger.Fatal(e.Start(":1323"))
}

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

Index

Examples

Constants

View Source 
const (
	CONNECT = http.MethodConnect
	DELETE  = http.MethodDelete
	GET     = http.MethodGet
	HEAD    = http.MethodHead
	OPTIONS = http.MethodOptions
	PATCH   = http.MethodPatch
	POST    = http.MethodPost
	// PROPFIND = "PROPFIND"
	PUT   = http.MethodPut
	TRACE = http.MethodTrace
)

HTTP methods NOTE: Deprecated, please use the stdlib constants directly instead.

View Source 
const (
	MIMEApplicationJSON                  = "application/json"
	MIMEApplicationJSONCharsetUTF8       = MIMEApplicationJSON + "; " + charsetUTF8
	MIMEApplicationJavaScript            = "application/javascript"
	MIMEApplicationJavaScriptCharsetUTF8 = MIMEApplicationJavaScript + "; " + charsetUTF8
	MIMEApplicationXML                   = "application/xml"
	MIMEApplicationXMLCharsetUTF8        = MIMEApplicationXML + "; " + charsetUTF8
	MIMETextXML                          = "text/xml"
	MIMETextXMLCharsetUTF8               = MIMETextXML + "; " + 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 (

	// PROPFIND Method can be used on collection and property resources.
	PROPFIND = "PROPFIND"
	// REPORT Method can be used to get information about a resource, see rfc 3253
	REPORT = "REPORT"
)
View Source 
const (
	HeaderAccept              = "Accept"
	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"
	HeaderXForwardedFor       = "X-Forwarded-For"
	HeaderXForwardedProto     = "X-Forwarded-Proto"
	HeaderXForwardedProtocol  = "X-Forwarded-Protocol"
	HeaderXForwardedSsl       = "X-Forwarded-Ssl"
	HeaderXUrlScheme          = "X-Url-Scheme"
	HeaderXHTTPMethodOverride = "X-HTTP-Method-Override"
	HeaderXRealIP             = "X-Real-IP"
	HeaderXRequestID          = "X-Request-ID"
	HeaderXRequestedWith      = "X-Requested-With"
	HeaderServer              = "Server"
	HeaderOrigin              = "Origin"

	// Access control
	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"
	HeaderContentSecurityPolicyReportOnly = "Content-Security-Policy-Report-Only"
	HeaderXCSRFToken                      = "X-CSRF-Token"
	HeaderReferrerPolicy                  = "Referrer-Policy"
)

Headers

View Source 
const (
	// Version of Echo
	Version = "4.2.2"
)

Variables

View Source 
var (
	ErrUnsupportedMediaType        = NewHTTPError(http.StatusUnsupportedMediaType)
	ErrNotFound                    = NewHTTPError(http.StatusNotFound)
	ErrUnauthorized                = NewHTTPError(http.StatusUnauthorized)
	ErrForbidden                   = NewHTTPError(http.StatusForbidden)
	ErrMethodNotAllowed            = NewHTTPError(http.StatusMethodNotAllowed)
	ErrStatusRequestEntityTooLarge = NewHTTPError(http.StatusRequestEntityTooLarge)
	ErrTooManyRequests             = NewHTTPError(http.StatusTooManyRequests)
	ErrBadRequest                  = NewHTTPError(http.StatusBadRequest)
	ErrBadGateway                  = NewHTTPError(http.StatusBadGateway)
	ErrInternalServerError         = NewHTTPError(http.StatusInternalServerError)
	ErrRequestTimeout              = NewHTTPError(http.StatusRequestTimeout)
	ErrServiceUnavailable          = NewHTTPError(http.StatusServiceUnavailable)
	ErrValidatorNotRegistered      = errors.New("validator not registered")
	ErrRendererNotRegistered       = errors.New("renderer not registered")
	ErrInvalidRedirectCode         = errors.New("invalid redirect status code")
	ErrCookieNotFound              = errors.New("cookie not found")
	ErrInvalidCertOrKeyType        = errors.New("invalid cert or key type, must be string or []byte")
	ErrInvalidListenerNetwork      = errors.New("invalid listener network")
)

Errors

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

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

Error handlers

Functions

func GetPath 

func GetPath(r *http.Request) string

GetPath returns RawPath, if it's empty returns Path from URL Difference between RawPath and Path is:

  • Path is where request path is stored. Value is stored in decoded form: /%47%6f%2f becomes /Go/.
  • RawPath is an optional field which only gets set if the default encoding is different from Path.

func NewBindingError 

func NewBindingError(sourceParam string, values []string, message interface{}, internalError error) error

NewBindingError creates new instance of binding error

Types

type BindUnmarshaler 

type BindUnmarshaler interface {
	// UnmarshalParam decodes and assigns a value from an form or query param.
	UnmarshalParam(param string) error
}

BindUnmarshaler is the interface used to wrap the UnmarshalParam method. Types that don't implement this, but do implement encoding.TextUnmarshaler will use that interface instead.

type Binder 

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

Binder is the interface that wraps the Bind method.

type BindingError 

type BindingError struct {
	// Field is the field name where value binding failed
	Field string `json:"field"`
	// Values of parameter that failed to bind.
	Values []string `json:"-"`
	*HTTPError
}

BindingError represents an error that occurred while binding request data.

func (*BindingError) Error 

func (be *BindingError) Error() string

Error returns error message

type Context 

type Context interface {
	// Request returns `*http.Request`.
	Request() *http.Request

	// SetRequest sets `*http.Request`.
	SetRequest(r *http.Request)

	// SetResponse sets `*Response`.
	SetResponse(r *Response)

	// Response returns `*Response`.
	Response() *Response

	// IsTLS returns true if HTTP connection is TLS otherwise false.
	IsTLS() bool

	// IsWebSocket returns true if HTTP connection is WebSocket otherwise false.
	IsWebSocket() bool

	// Scheme returns the HTTP protocol scheme, `http` or `https`.
	Scheme() string

	// RealIP returns the client's network address based on `X-Forwarded-For`
	// or `X-Real-IP` request header.
	// The behavior can be configured using `Echo#IPExtractor`.
	RealIP() string

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

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

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

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

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

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

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

	// QueryParam returns the query param for the provided name.
	QueryParam(name string) string

	// QueryParams returns the query parameters as `url.Values`.
	QueryParams() url.Values

	// QueryString returns the URL query string.
	QueryString() string

	// FormValue returns the form field value for the provided name.
	FormValue(name string) string

	// FormParams returns the form parameters as `url.Values`.
	FormParams() (url.Values, error)

	// FormFile returns the multipart form file for the provided name.
	FormFile(name string) (*multipart.FileHeader, error)

	// MultipartForm returns the multipart form.
	MultipartForm() (*multipart.Form, error)

	// Cookie returns the named cookie provided in the request.
	Cookie(name string) (*http.Cookie, error)

	// SetCookie adds a `Set-Cookie` header in HTTP response.
	SetCookie(cookie *http.Cookie)

	// Cookies returns the HTTP cookies sent with the request.
	Cookies() []*http.Cookie

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

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

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

	// Validate validates provided `i`. It is usually called after `Context#Bind()`.
	// Validator must be registered using `Echo#Validator`.
	Validate(i interface{}) error

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

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

	// HTMLBlob sends an HTTP blob response with status code.
	HTMLBlob(code int, b []byte) error

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

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

	// JSONPretty sends a pretty-print JSON with status code.
	JSONPretty(code int, i interface{}, indent string) error

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

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

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

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

	// XMLPretty sends a pretty-print XML with status code.
	XMLPretty(code int, i interface{}, indent string) error

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

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

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

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

	// Attachment sends a response as attachment, prompting client to save the
	// file.
	Attachment(file string, name string) error

	// Inline sends a response as inline, opening the file in the browser.
	Inline(file string, name string) error

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

	// Redirect redirects the request to a provided URL with status code.
	Redirect(code int, url 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(h HandlerFunc)

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

	// Set the logger
	SetLogger(l Logger)

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

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

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

type DefaultBinder 

type DefaultBinder struct{}

DefaultBinder is the default implementation of the Binder interface.

func (*DefaultBinder) Bind 

func (b *DefaultBinder) Bind(i interface{}, c Context) (err error)

Bind implements the `Binder#Bind` function. Binding is done in following order: 1) path params; 2) query params; 3) request body. Each step COULD override previous step binded values. For single source binding use their own methods BindBody, BindQueryParams, BindPathParams.

func (*DefaultBinder) BindBody 

func (b *DefaultBinder) BindBody(c Context, i interface{}) (err error)

BindBody binds request body contents to bindable object NB: then binding forms take note that this implementation uses standard library form parsing which parses form data from BOTH URL and BODY if content type is not MIMEMultipartForm See non-MIMEMultipartForm: https://golang.org/pkg/net/http/#Request.ParseForm See MIMEMultipartForm: https://golang.org/pkg/net/http/#Request.ParseMultipartForm

func (*DefaultBinder) BindPathParams 

func (b *DefaultBinder) BindPathParams(c Context, i interface{}) error

BindPathParams binds path params to bindable object

func (*DefaultBinder) BindQueryParams 

func (b *DefaultBinder) BindQueryParams(c Context, i interface{}) error

BindQueryParams binds query params to bindable object

type Echo 

type Echo struct {
	StdLogger *stdLog.Logger

	Server           *http.Server
	TLSServer        *http.Server
	Listener         net.Listener
	TLSListener      net.Listener
	AutoTLSManager   autocert.Manager
	DisableHTTP2     bool
	Debug            bool
	HideBanner       bool
	HidePort         bool
	HTTPErrorHandler HTTPErrorHandler
	Binder           Binder
	Validator        Validator
	Renderer         Renderer
	Logger           Logger
	IPExtractor      IPExtractor
	ListenerNetwork  string
	// 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 return the context by calling `ReleaseContext()`.

func (*Echo) Add 

func (e *Echo) Add(method, path string, handler HandlerFunc, middleware ...MiddlewareFunc) *Route

Add registers a new route for an HTTP method and path with matching handler in the router with optional route-level middleware.

func (*Echo) Any 

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

Any registers a new route for all HTTP methods and 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) *Route

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

func (*Echo) Close 

func (e *Echo) Close() error

Close immediately stops the server. It internally calls `http.Server#Close()`.

func (*Echo) DELETE 

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

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

func (*Echo) DefaultHTTPErrorHandler 

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

DefaultHTTPErrorHandler is the default HTTP error handler. It sends a JSON response with status code.

func (*Echo) File 

func (e *Echo) File(path, file string, m ...MiddlewareFunc) *Route

File registers a new route with path to serve a static file with optional route-level middleware.

func (*Echo) GET 

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

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

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) *Route

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

func (*Echo) Host 

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

Host creates a new router group for the provided host and optional host-level middleware.

func (*Echo) ListenerAddr 

func (e *Echo) ListenerAddr() net.Addr

ListenerAddr returns net.Addr for Listener

func (*Echo) Match 

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

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(r *http.Request, w http.ResponseWriter) Context

NewContext returns a Context instance.

func (*Echo) OPTIONS 

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

OPTIONS registers a new OPTIONS 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) *Route

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) *Route

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) *Route

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

func (*Echo) Pre 

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

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

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) Reverse 

func (e *Echo) Reverse(name string, params ...interface{}) string

Reverse generates an URL from route name and provided parameters.

func (*Echo) Router 

func (e *Echo) Router() *Router

Router returns the default router.

func (*Echo) Routers 

func (e *Echo) Routers() map[string]*Router

Routers returns the map of host => router.

func (*Echo) Routes 

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

Routes returns the registered routes.

func (*Echo) ServeHTTP 

func (e *Echo) ServeHTTP(w http.ResponseWriter, r *http.Request)

ServeHTTP implements `http.Handler` interface, which serves HTTP requests.

func (*Echo) Shutdown 

func (e *Echo) Shutdown(ctx stdContext.Context) error

Shutdown stops the server gracefully. It internally calls `http.Server#Shutdown()`.

func (*Echo) Start 

func (e *Echo) Start(address string) error

Start starts an HTTP server.

func (*Echo) StartAutoTLS 

func (e *Echo) StartAutoTLS(address string) error

StartAutoTLS starts an HTTPS server using certificates automatically installed from https://letsencrypt.org.

func (*Echo) StartH2CServer 

func (e *Echo) StartH2CServer(address string, h2s *http2.Server) (err error)

StartH2CServer starts a custom http/2 server with h2c (HTTP/2 Cleartext).

func (*Echo) StartServer 

func (e *Echo) StartServer(s *http.Server) (err error)

StartServer starts a custom http server.

func (*Echo) StartTLS 

func (e *Echo) StartTLS(address string, certFile, keyFile interface{}) (err error)

StartTLS starts an HTTPS server. If `certFile` or `keyFile` is `string` the values are treated as file paths. If `certFile` or `keyFile` is `[]byte` the values are treated as the certificate or key as-is.

func (*Echo) Static 

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

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

func (*Echo) TLSListenerAddr 

func (e *Echo) TLSListenerAddr() net.Addr

TLSListenerAddr returns net.Addr for TLSListener

func (*Echo) TRACE 

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

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

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 middleware or functionality that should be separate from the parent echo instance while still inheriting from it.

func (*Group) Add 

func (g *Group) Add(method, path string, handler HandlerFunc, middleware ...MiddlewareFunc) *Route

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

func (*Group) Any 

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

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

func (*Group) CONNECT 

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

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

func (*Group) DELETE 

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

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

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) *Route

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

func (*Group) Group 

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

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

func (*Group) Match 

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

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

func (*Group) OPTIONS 

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

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

func (*Group) PATCH 

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

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

func (*Group) POST 

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

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

func (*Group) PUT 

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

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

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) *Route

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

func (*Group) Use 

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

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

type HTTPError 

type HTTPError struct {
	Code     int         `json:"-"`
	Message  interface{} `json:"message"`
	Internal error       `json:"-"` // Stores the error returned by an external dependency
}

HTTPError represents an error that occurred while handling a request.

func NewHTTPError 

func NewHTTPError(code int, message ...interface{}) *HTTPError

NewHTTPError creates a new HTTPError instance.

func (*HTTPError) Error 

func (he *HTTPError) Error() string

Error makes it compatible with `error` interface.

func (*HTTPError) SetInternal 

func (he *HTTPError) SetInternal(err error) *HTTPError

SetInternal sets error to HTTPError.Internal

func (*HTTPError) Unwrap 

func (he *HTTPError) Unwrap() error

Unwrap satisfies the Go 1.13 error wrapper 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 serve HTTP requests.

func WrapHandler 

func WrapHandler(h http.Handler) HandlerFunc

WrapHandler wraps `http.Handler` into `echo.HandlerFunc`.

type IPExtractor 

type IPExtractor func(*http.Request) string

IPExtractor is a function to extract IP addr from http.Request. Set appropriate one to Echo#IPExtractor. See https://echo.labstack.com/guide/ip-address for more details.

func ExtractIPDirect 

func ExtractIPDirect() IPExtractor

ExtractIPDirect extracts IP address using actual IP address. Use this if your server faces to internet directory (i.e.: uses no proxy).

func ExtractIPFromRealIPHeader 

func ExtractIPFromRealIPHeader(options ...TrustOption) IPExtractor

ExtractIPFromRealIPHeader extracts IP address using x-real-ip header. Use this if you put proxy which uses this header.

func ExtractIPFromXFFHeader 

func ExtractIPFromXFFHeader(options ...TrustOption) IPExtractor

ExtractIPFromXFFHeader extracts IP address using x-forwarded-for header. Use this if you put proxy which uses this header. This returns nearest untrustable IP. If all IPs are trustable, returns furthest one (i.e.: XFF[0]).

type Logger 

type Logger interface {
	Output() io.Writer
	SetOutput(w io.Writer)
	Prefix() string
	SetPrefix(p string)
	Level() log.Lvl
	SetLevel(v log.Lvl)
	SetHeader(h string)
	Print(i ...interface{})
	Printf(format string, args ...interface{})
	Printj(j log.JSON)
	Debug(i ...interface{})
	Debugf(format string, args ...interface{})
	Debugj(j log.JSON)
	Info(i ...interface{})
	Infof(format string, args ...interface{})
	Infoj(j log.JSON)
	Warn(i ...interface{})
	Warnf(format string, args ...interface{})
	Warnj(j log.JSON)
	Error(i ...interface{})
	Errorf(format string, args ...interface{})
	Errorj(j log.JSON)
	Fatal(i ...interface{})
	Fatalj(j log.JSON)
	Fatalf(format string, args ...interface{})
	Panic(i ...interface{})
	Panicj(j log.JSON)
	Panicf(format string, args ...interface{})
}

Logger defines the logging interface.

type Map 

type Map map[string]interface{}

Map defines a generic map of type `map[string]interface{}`.

type MiddlewareFunc 

type MiddlewareFunc func(HandlerFunc) HandlerFunc

MiddlewareFunc defines a function to process middleware.

func WrapMiddleware 

func WrapMiddleware(m func(http.Handler) http.Handler) MiddlewareFunc

WrapMiddleware wraps `func(http.Handler) http.Handler` 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 Response 

type Response struct {
	Writer    http.ResponseWriter
	Status    int
	Size      int64
	Committed bool
	// contains filtered or unexported fields
}

Response wraps an http.ResponseWriter and implements its interface to be used by an HTTP handler to construct an HTTP response. See: https://golang.org/pkg/net/http/#ResponseWriter

func NewResponse 

func NewResponse(w http.ResponseWriter, e *Echo) (r *Response)

NewResponse creates a new instance of Response.

func (*Response) After 

func (r *Response) After(fn func())

After registers a function which is called just after the response is written. If the `Content-Length` is unknown, none of the after function is executed.

func (*Response) Before 

func (r *Response) Before(fn func())

Before registers a function which is called just before the response is written.

func (*Response) Flush 

func (r *Response) Flush()

Flush implements the http.Flusher interface to allow an HTTP handler to flush buffered data to the client. See http.Flusher(https://golang.org/pkg/net/http/#Flusher)

func (*Response) Header 

func (r *Response) Header() http.Header

Header returns the header map for the writer that will be sent by WriteHeader. Changing the header after a call to WriteHeader (or Write) has no effect unless the modified headers were declared as trailers by setting the "Trailer" header before the call to WriteHeader (see example) To suppress implicit response headers, set their value to nil. Example: https://golang.org/pkg/net/http/#example_ResponseWriter_trailers

func (*Response) Hijack 

func (r *Response) Hijack() (net.Conn, *bufio.ReadWriter, error)

Hijack implements the http.Hijacker interface to allow an HTTP handler to take over the connection. See http.Hijacker(https://golang.org/pkg/net/http/#Hijacker)

func (*Response) Write 

func (r *Response) Write(b []byte) (n int, err error)

Write writes the data to the connection as part of an HTTP reply.

func (*Response) WriteHeader 

func (r *Response) WriteHeader(code int)

WriteHeader sends an HTTP response header with status code. If WriteHeader is not called explicitly, the first call to Write will trigger an implicit WriteHeader(http.StatusOK). Thus explicit calls to WriteHeader are mainly used to send error codes.

type Route 

type Route struct {
	Method string `json:"method"`
	Path   string `json:"path"`
	Name   string `json:"name"`
}

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, c Context)

Find lookup a handler registered 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 TrustOption 

type TrustOption func(*ipChecker)

TrustOption is config for which IP address to trust

func TrustIPRange 

func TrustIPRange(ipRange *net.IPNet) TrustOption

TrustIPRange add trustable IP ranges using CIDR notation.

func TrustLinkLocal 

func TrustLinkLocal(v bool) TrustOption

TrustLinkLocal configures if you trust link-local address (default: true).

func TrustLoopback 

func TrustLoopback(v bool) TrustOption

TrustLoopback configures if you trust loopback address (default: true).

func TrustPrivateNet 

func TrustPrivateNet(v bool) TrustOption

TrustPrivateNet configures if you trust private network address (default: true).

type Validator 

type Validator interface {
	Validate(i interface{}) error
}

Validator is the interface that wraps the Validate function.

type ValueBinder 

type ValueBinder struct {

	// ValueFunc is used to get single parameter (first) value from request
	ValueFunc func(sourceParam string) string
	// ValuesFunc is used to get all values for parameter from request. i.e. `/api/search?ids=1&ids=2`
	ValuesFunc func(sourceParam string) []string
	// ErrorFunc is used to create errors. Allows you to use your own error type, that for example marshals to your specific json response
	ErrorFunc func(sourceParam string, values []string, message interface{}, internalError error) error
	// contains filtered or unexported fields
}

ValueBinder provides utility methods for binding query or path parameter to various Go built-in types

func FormFieldBinder 

func FormFieldBinder(c Context) *ValueBinder

FormFieldBinder creates form field value binder For all requests, FormFieldBinder parses the raw query from the URL and uses query params as form fields

For POST, PUT, and PATCH requests, it also reads the request body, parses it as a form and uses query params as form fields. Request body parameters take precedence over URL query string values in r.Form.

NB: when binding forms take note that this implementation uses standard library form parsing which parses form data from BOTH URL and BODY if content type is not MIMEMultipartForm See https://golang.org/pkg/net/http/#Request.ParseForm

func PathParamsBinder 

func PathParamsBinder(c Context) *ValueBinder

PathParamsBinder creates path parameter value binder

func QueryParamsBinder 

func QueryParamsBinder(c Context) *ValueBinder

QueryParamsBinder creates query parameter value binder

func (*ValueBinder) BindError 

func (b *ValueBinder) BindError() error

BindError returns first seen bind error and resets/empties binder errors for further calls

Example 
// example route function that binds query params to different destinations and stops binding on first bind error
failFastRouteFunc := func(c echo.Context) error {
	var opts struct {
		Active bool
		IDs    []int64
	}
	length := int64(50) // default length is 50

	// create binder that stops binding at first error
	b := echo.QueryParamsBinder(c)

	err := b.Int64("length", &length).
		Int64s("ids", &opts.IDs).
		Bool("active", &opts.Active).
		BindError() // returns first binding error
	if err != nil {
		bErr := err.(*echo.BindingError)
		return fmt.Errorf("my own custom error for field: %s values: %v", bErr.Field, bErr.Values)
	}
	fmt.Printf("active = %v, length = %v, ids = %v\n", opts.Active, length, opts.IDs)

	return c.JSON(http.StatusOK, opts)
}

e := echo.New()
c := e.NewContext(
	httptest.NewRequest(http.MethodGet, "/api/endpoint?active=true&length=25&ids=1&ids=2&ids=3", nil),
	httptest.NewRecorder(),
)

_ = failFastRouteFunc(c)

Output:

active = true, length = 25, ids = [1 2 3]

func (*ValueBinder) BindErrors 

func (b *ValueBinder) BindErrors() []error

BindErrors returns all bind errors and resets/empties binder errors for further calls

Example 
// example route function that binds query params to different destinations and returns all bind errors in one go
routeFunc := func(c echo.Context) error {
	var opts struct {
		Active bool
		IDs    []int64
	}
	length := int64(50) // default length is 50

	b := echo.QueryParamsBinder(c)

	errs := b.Int64("length", &length).
		Int64s("ids", &opts.IDs).
		Bool("active", &opts.Active).
		BindErrors() // returns all errors
	if errs != nil {
		for _, err := range errs {
			bErr := err.(*echo.BindingError)
			log.Printf("in case you want to access what field: %s values: %v failed", bErr.Field, bErr.Values)
		}
		return fmt.Errorf("%v fields failed to bind", len(errs))
	}
	fmt.Printf("active = %v, length = %v, ids = %v", opts.Active, length, opts.IDs)

	return c.JSON(http.StatusOK, opts)
}

e := echo.New()
c := e.NewContext(
	httptest.NewRequest(http.MethodGet, "/api/endpoint?active=true&length=25&ids=1&ids=2&ids=3", nil),
	httptest.NewRecorder(),
)

_ = routeFunc(c)

Output:

active = true, length = 25, ids = [1 2 3]

func (*ValueBinder) BindUnmarshaler 

func (b *ValueBinder) BindUnmarshaler(sourceParam string, dest BindUnmarshaler) *ValueBinder

BindUnmarshaler binds parameter to destination implementing BindUnmarshaler interface

func (*ValueBinder) BindWithDelimiter 

func (b *ValueBinder) BindWithDelimiter(sourceParam string, dest interface{}, delimiter string) *ValueBinder

BindWithDelimiter binds parameter to destination by suitable conversion function. Delimiter is used before conversion to split parameter value to separate values

func (*ValueBinder) Bool 

func (b *ValueBinder) Bool(sourceParam string, dest *bool) *ValueBinder

Bool binds parameter to bool variable

func (*ValueBinder) Bools 

func (b *ValueBinder) Bools(sourceParam string, dest *[]bool) *ValueBinder

Bools binds parameter values to slice of bool variables

func (*ValueBinder) Byte 

func (b *ValueBinder) Byte(sourceParam string, dest *byte) *ValueBinder

Byte binds parameter to byte variable

func (*ValueBinder) CustomFunc 

func (b *ValueBinder) CustomFunc(sourceParam string, customFunc func(values []string) []error) *ValueBinder

CustomFunc binds parameter values with Func. Func is called only when parameter values exist.

Example 
// example route function that binds query params using custom function closure
routeFunc := func(c echo.Context) error {
	length := int64(50) // default length is 50
	var binary []byte

	b := echo.QueryParamsBinder(c)
	errs := b.Int64("length", &length).
		CustomFunc("base64", func(values []string) []error {
			if len(values) == 0 {
				return nil
			}
			decoded, err := base64.URLEncoding.DecodeString(values[0])
			if err != nil {
				// in this example we use only first param value but url could contain multiple params in reality and
				// therefore in theory produce multiple binding errors
				return []error{echo.NewBindingError("base64", values[0:1], "failed to decode base64", err)}
			}
			binary = decoded
			return nil
		}).
		BindErrors() // returns all errors

	if errs != nil {
		for _, err := range errs {
			bErr := err.(*echo.BindingError)
			log.Printf("in case you want to access what field: %s values: %v failed", bErr.Field, bErr.Values)
		}
		return fmt.Errorf("%v fields failed to bind", len(errs))
	}
	fmt.Printf("length = %v, base64 = %s", length, binary)

	return c.JSON(http.StatusOK, "ok")
}

e := echo.New()
c := e.NewContext(
	httptest.NewRequest(http.MethodGet, "/api/endpoint?length=25&base64=SGVsbG8gV29ybGQ%3D", nil),
	httptest.NewRecorder(),
)
_ = routeFunc(c)

Output:

length = 25, base64 = Hello World

func (*ValueBinder) Duration 

func (b *ValueBinder) Duration(sourceParam string, dest *time.Duration) *ValueBinder

Duration binds parameter to time.Duration variable

func (*ValueBinder) Durations 

func (b *ValueBinder) Durations(sourceParam string, dest *[]time.Duration) *ValueBinder

Durations binds parameter values to slice of time.Duration variables

func (*ValueBinder) FailFast 

func (b *ValueBinder) FailFast(value bool) *ValueBinder

FailFast set internal flag to indicate if binding methods will return early (without binding) when previous bind failed NB: call this method before any other binding methods as it modifies binding methods behaviour

func (*ValueBinder) Float32 

func (b *ValueBinder) Float32(sourceParam string, dest *float32) *ValueBinder

Float32 binds parameter to float32 variable

func (*ValueBinder) Float32s 

func (b *ValueBinder) Float32s(sourceParam string, dest *[]float32) *ValueBinder

Float32s binds parameter values to slice of float32 variables

func (*ValueBinder) Float64 

func (b *ValueBinder) Float64(sourceParam string, dest *float64) *ValueBinder

Float64 binds parameter to float64 variable

func (*ValueBinder) Float64s 

func (b *ValueBinder) Float64s(sourceParam string, dest *[]float64) *ValueBinder

Float64s binds parameter values to slice of float64 variables

func (*ValueBinder) Int 

func (b *ValueBinder) Int(sourceParam string, dest *int) *ValueBinder

Int binds parameter to int variable

func (*ValueBinder) Int16 

func (b *ValueBinder) Int16(sourceParam string, dest *int16) *ValueBinder

Int16 binds parameter to int16 variable

func (*ValueBinder) Int16s 

func (b *ValueBinder) Int16s(sourceParam string, dest *[]int16) *ValueBinder

Int16s binds parameter to slice of int16

func (*ValueBinder) Int32 

func (b *ValueBinder) Int32(sourceParam string, dest *int32) *ValueBinder

Int32 binds parameter to int32 variable

func (*ValueBinder) Int32s 

func (b *ValueBinder) Int32s(sourceParam string, dest *[]int32) *ValueBinder

Int32s binds parameter to slice of int32

func (*ValueBinder) Int64 

func (b *ValueBinder) Int64(sourceParam string, dest *int64) *ValueBinder

Int64 binds parameter to int64 variable

func (*ValueBinder) Int64s 

func (b *ValueBinder) Int64s(sourceParam string, dest *[]int64) *ValueBinder

Int64s binds parameter to slice of int64

func (*ValueBinder) Int8 

func (b *ValueBinder) Int8(sourceParam string, dest *int8) *ValueBinder

Int8 binds parameter to int8 variable

func (*ValueBinder) Int8s 

func (b *ValueBinder) Int8s(sourceParam string, dest *[]int8) *ValueBinder

Int8s binds parameter to slice of int8

func (*ValueBinder) Ints 

func (b *ValueBinder) Ints(sourceParam string, dest *[]int) *ValueBinder

Ints binds parameter to slice of int

func (*ValueBinder) MustBindUnmarshaler 

func (b *ValueBinder) MustBindUnmarshaler(sourceParam string, dest BindUnmarshaler) *ValueBinder

MustBindUnmarshaler requires parameter value to exist to be bind to destination implementing BindUnmarshaler interface. Returns error when value does not exist

func (*ValueBinder) MustBindWithDelimiter 

func (b *ValueBinder) MustBindWithDelimiter(sourceParam string, dest interface{}, delimiter string) *ValueBinder

MustBindWithDelimiter requires parameter value to exist to be bind destination by suitable conversion function. Delimiter is used before conversion to split parameter value to separate values

func (*ValueBinder) MustBool 

func (b *ValueBinder) MustBool(sourceParam string, dest *bool) *ValueBinder

MustBool requires parameter value to exist to be bind to bool variable. Returns error when value does not exist

func (*ValueBinder) MustBools 

func (b *ValueBinder) MustBools(sourceParam string, dest *[]bool) *ValueBinder

MustBools requires parameter values to exist to be bind to slice of bool variables. Returns error when values does not exist

func (*ValueBinder) MustByte 

func (b *ValueBinder) MustByte(sourceParam string, dest *byte) *ValueBinder

MustByte requires parameter value to exist to be bind to byte variable. Returns error when value does not exist

func (*ValueBinder) MustCustomFunc 

func (b *ValueBinder) MustCustomFunc(sourceParam string, customFunc func(values []string) []error) *ValueBinder

MustCustomFunc requires parameter values to exist to be bind with Func. Returns error when value does not exist.

func (*ValueBinder) MustDuration 

func (b *ValueBinder) MustDuration(sourceParam string, dest *time.Duration) *ValueBinder

MustDuration requires parameter value to exist to be bind to time.Duration variable. Returns error when value does not exist

func (*ValueBinder) MustDurations 

func (b *ValueBinder) MustDurations(sourceParam string, dest *[]time.Duration) *ValueBinder

MustDurations requires parameter values to exist to be bind to slice of time.Duration variables. Returns error when values does not exist

func (*ValueBinder) MustFloat32 

func (b *ValueBinder) MustFloat32(sourceParam string, dest *float32) *ValueBinder

MustFloat32 requires parameter value to exist to be bind to float32 variable. Returns error when value does not exist

func (*ValueBinder) MustFloat32s 

func (b *ValueBinder) MustFloat32s(sourceParam string, dest *[]float32) *ValueBinder

MustFloat32s requires parameter values to exist to be bind to slice of float32 variables. Returns error when values does not exist

func (*ValueBinder) MustFloat64 

func (b *ValueBinder) MustFloat64(sourceParam string, dest *float64) *ValueBinder

MustFloat64 requires parameter value to exist to be bind to float64 variable. Returns error when value does not exist

func (*ValueBinder) MustFloat64s 

func (b *ValueBinder) MustFloat64s(sourceParam string, dest *[]float64) *ValueBinder

MustFloat64s requires parameter values to exist to be bind to slice of float64 variables. Returns error when values does not exist

func (*ValueBinder) MustInt 

func (b *ValueBinder) MustInt(sourceParam string, dest *int) *ValueBinder

MustInt requires parameter value to exist to be bind to int variable. Returns error when value does not exist

func (*ValueBinder) MustInt16 

func (b *ValueBinder) MustInt16(sourceParam string, dest *int16) *ValueBinder

MustInt16 requires parameter value to exist to be bind to int16 variable. Returns error when value does not exist

func (*ValueBinder) MustInt16s 

func (b *ValueBinder) MustInt16s(sourceParam string, dest *[]int16) *ValueBinder

MustInt16s requires parameter value to exist to be bind to int16 slice variable. Returns error when value does not exist

func (*ValueBinder) MustInt32 

func (b *ValueBinder) MustInt32(sourceParam string, dest *int32) *ValueBinder

MustInt32 requires parameter value to exist to be bind to int32 variable. Returns error when value does not exist

func (*ValueBinder) MustInt32s 

func (b *ValueBinder) MustInt32s(sourceParam string, dest *[]int32) *ValueBinder

MustInt32s requires parameter value to exist to be bind to int32 slice variable. Returns error when value does not exist

func (*ValueBinder) MustInt64 

func (b *ValueBinder) MustInt64(sourceParam string, dest *int64) *ValueBinder

MustInt64 requires parameter value to exist to be bind to int64 variable. Returns error when value does not exist

func (*ValueBinder) MustInt64s 

func (b *ValueBinder) MustInt64s(sourceParam string, dest *[]int64) *ValueBinder

MustInt64s requires parameter value to exist to be bind to int64 slice variable. Returns error when value does not exist

func (*ValueBinder) MustInt8 

func (b *ValueBinder) MustInt8(sourceParam string, dest *int8) *ValueBinder

MustInt8 requires parameter value to exist to be bind to int8 variable. Returns error when value does not exist

func (*ValueBinder) MustInt8s 

func (b *ValueBinder) MustInt8s(sourceParam string, dest *[]int8) *ValueBinder

MustInt8s requires parameter value to exist to be bind to int8 slice variable. Returns error when value does not exist

func (*ValueBinder) MustInts 

func (b *ValueBinder) MustInts(sourceParam string, dest *[]int) *ValueBinder

MustInts requires parameter value to exist to be bind to int slice variable. Returns error when value does not exist

func (*ValueBinder) MustString 

func (b *ValueBinder) MustString(sourceParam string, dest *string) *ValueBinder

MustString requires parameter value to exist to be bind to string variable. Returns error when value does not exist

func (*ValueBinder) MustStrings 

func (b *ValueBinder) MustStrings(sourceParam string, dest *[]string) *ValueBinder

MustStrings requires parameter values to exist to be bind to slice of string variables. Returns error when value does not exist

func (*ValueBinder) MustTime 

func (b *ValueBinder) MustTime(sourceParam string, dest *time.Time, layout string) *ValueBinder

MustTime requires parameter value to exist to be bind to time.Time variable. Returns error when value does not exist

func (*ValueBinder) MustTimes 

func (b *ValueBinder) MustTimes(sourceParam string, dest *[]time.Time, layout string) *ValueBinder

MustTimes requires parameter values to exist to be bind to slice of time.Time variables. Returns error when values does not exist

func (*ValueBinder) MustUint 

func (b *ValueBinder) MustUint(sourceParam string, dest *uint) *ValueBinder

MustUint requires parameter value to exist to be bind to uint variable. Returns error when value does not exist

func (*ValueBinder) MustUint16 

func (b *ValueBinder) MustUint16(sourceParam string, dest *uint16) *ValueBinder

MustUint16 requires parameter value to exist to be bind to uint16 variable. Returns error when value does not exist

func (*ValueBinder) MustUint16s 

func (b *ValueBinder) MustUint16s(sourceParam string, dest *[]uint16) *ValueBinder

MustUint16s requires parameter value to exist to be bind to uint16 slice variable. Returns error when value does not exist

func (*ValueBinder) MustUint32 

func (b *ValueBinder) MustUint32(sourceParam string, dest *uint32) *ValueBinder

MustUint32 requires parameter value to exist to be bind to uint32 variable. Returns error when value does not exist

func (*ValueBinder) MustUint32s 

func (b *ValueBinder) MustUint32s(sourceParam string, dest *[]uint32) *ValueBinder

MustUint32s requires parameter value to exist to be bind to uint32 slice variable. Returns error when value does not exist

func (*ValueBinder) MustUint64 

func (b *ValueBinder) MustUint64(sourceParam string, dest *uint64) *ValueBinder

MustUint64 requires parameter value to exist to be bind to uint64 variable. Returns error when value does not exist

func (*ValueBinder) MustUint64s 

func (b *ValueBinder) MustUint64s(sourceParam string, dest *[]uint64) *ValueBinder

MustUint64s requires parameter value to exist to be bind to uint64 slice variable. Returns error when value does not exist

func (*ValueBinder) MustUint8 

func (b *ValueBinder) MustUint8(sourceParam string, dest *uint8) *ValueBinder

MustUint8 requires parameter value to exist to be bind to uint8 variable. Returns error when value does not exist

func (*ValueBinder) MustUint8s 

func (b *ValueBinder) MustUint8s(sourceParam string, dest *[]uint8) *ValueBinder

MustUint8s requires parameter value to exist to be bind to uint8 slice variable. Returns error when value does not exist

func (*ValueBinder) MustUints 

func (b *ValueBinder) MustUints(sourceParam string, dest *[]uint) *ValueBinder

MustUints requires parameter value to exist to be bind to uint slice variable. Returns error when value does not exist

func (*ValueBinder) MustUnixTime 

func (b *ValueBinder) MustUnixTime(sourceParam string, dest *time.Time) *ValueBinder

MustUnixTime requires parameter value to exist to be bind to time.Duration variable (in local Time corresponding to the given Unix time). Returns error when value does not exist.

Example: 1609180603 bind to 2020-12-28T18:36:43.000000000+00:00

Note:

  • time.Time{} (param is empty) and time.Unix(0,0) (param = "0") are not equal

func (*ValueBinder) MustUnixTimeNano 

func (b *ValueBinder) MustUnixTimeNano(sourceParam string, dest *time.Time) *ValueBinder

MustUnixTimeNano requires parameter value to exist to be bind to time.Duration variable (in local Time corresponding to the given Unix time value in nano second precision). Returns error when value does not exist.

Example: 1609180603123456789 binds to 2020-12-28T18:36:43.123456789+00:00 Example: 1000000000 binds to 1970-01-01T00:00:01.000000000+00:00 Example: 999999999 binds to 1970-01-01T00:00:00.999999999+00:00

Note:

  • time.Time{} (param is empty) and time.Unix(0,0) (param = "0") are not equal
  • Javascript's Number type only has about 53 bits of precision (Number.MAX_SAFE_INTEGER = 9007199254740991). Compare it to 1609180603123456789 in example.

func (*ValueBinder) String 

func (b *ValueBinder) String(sourceParam string, dest *string) *ValueBinder

String binds parameter to string variable

func (*ValueBinder) Strings 

func (b *ValueBinder) Strings(sourceParam string, dest *[]string) *ValueBinder

Strings binds parameter values to slice of string

func (*ValueBinder) Time 

func (b *ValueBinder) Time(sourceParam string, dest *time.Time, layout string) *ValueBinder

Time binds parameter to time.Time variable

func (*ValueBinder) Times 

func (b *ValueBinder) Times(sourceParam string, dest *[]time.Time, layout string) *ValueBinder

Times binds parameter values to slice of time.Time variables

func (*ValueBinder) Uint 

func (b *ValueBinder) Uint(sourceParam string, dest *uint) *ValueBinder

Uint binds parameter to uint variable

func (*ValueBinder) Uint16 

func (b *ValueBinder) Uint16(sourceParam string, dest *uint16) *ValueBinder

Uint16 binds parameter to uint16 variable

func (*ValueBinder) Uint16s 

func (b *ValueBinder) Uint16s(sourceParam string, dest *[]uint16) *ValueBinder

Uint16s binds parameter to slice of uint16

func (*ValueBinder) Uint32 

func (b *ValueBinder) Uint32(sourceParam string, dest *uint32) *ValueBinder

Uint32 binds parameter to uint32 variable

func (*ValueBinder) Uint32s 

func (b *ValueBinder) Uint32s(sourceParam string, dest *[]uint32) *ValueBinder

Uint32s binds parameter to slice of uint32

func (*ValueBinder) Uint64 

func (b *ValueBinder) Uint64(sourceParam string, dest *uint64) *ValueBinder

Uint64 binds parameter to uint64 variable

func (*ValueBinder) Uint64s 

func (b *ValueBinder) Uint64s(sourceParam string, dest *[]uint64) *ValueBinder

Uint64s binds parameter to slice of uint64

func (*ValueBinder) Uint8 

func (b *ValueBinder) Uint8(sourceParam string, dest *uint8) *ValueBinder

Uint8 binds parameter to uint8 variable

func (*ValueBinder) Uint8s 

func (b *ValueBinder) Uint8s(sourceParam string, dest *[]uint8) *ValueBinder

Uint8s binds parameter to slice of uint8

func (*ValueBinder) Uints 

func (b *ValueBinder) Uints(sourceParam string, dest *[]uint) *ValueBinder

Uints binds parameter to slice of uint

func (*ValueBinder) UnixTime 

func (b *ValueBinder) UnixTime(sourceParam string, dest *time.Time) *ValueBinder

UnixTime binds parameter to time.Time variable (in local Time corresponding to the given Unix time).

Example: 1609180603 bind to 2020-12-28T18:36:43.000000000+00:00

Note:

  • time.Time{} (param is empty) and time.Unix(0,0) (param = "0") are not equal

func (*ValueBinder) UnixTimeNano 

func (b *ValueBinder) UnixTimeNano(sourceParam string, dest *time.Time) *ValueBinder

UnixTimeNano binds parameter to time.Time variable (in local Time corresponding to the given Unix time in nano second precision).

Example: 1609180603123456789 binds to 2020-12-28T18:36:43.123456789+00:00 Example: 1000000000 binds to 1970-01-01T00:00:01.000000000+00:00 Example: 999999999 binds to 1970-01-01T00:00:00.999999999+00:00

Note:

  • time.Time{} (param is empty) and time.Unix(0,0) (param = "0") are not equal
  • Javascript's Number type only has about 53 bits of precision (Number.MAX_SAFE_INTEGER = 9007199254740991). Compare it to 1609180603123456789 in example.

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