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134 lines
4.5 KiB
134 lines
4.5 KiB
//
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// Package chi is a small, idiomatic and composable router for building HTTP services.
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//
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// chi requires Go 1.10 or newer.
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//
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// Example:
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// package main
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//
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// import (
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// "net/http"
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//
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// "github.com/go-chi/chi"
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// "github.com/go-chi/chi/middleware"
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// )
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//
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// func main() {
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// r := chi.NewRouter()
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// r.Use(middleware.Logger)
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// r.Use(middleware.Recoverer)
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//
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// r.Get("/", func(w http.ResponseWriter, r *http.Request) {
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// w.Write([]byte("root."))
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// })
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//
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// http.ListenAndServe(":3333", r)
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// }
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//
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// See github.com/go-chi/chi/_examples/ for more in-depth examples.
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//
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// URL patterns allow for easy matching of path components in HTTP
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// requests. The matching components can then be accessed using
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// chi.URLParam(). All patterns must begin with a slash.
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//
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// A simple named placeholder {name} matches any sequence of characters
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// up to the next / or the end of the URL. Trailing slashes on paths must
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// be handled explicitly.
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//
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// A placeholder with a name followed by a colon allows a regular
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// expression match, for example {number:\\d+}. The regular expression
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// syntax is Go's normal regexp RE2 syntax, except that regular expressions
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// including { or } are not supported, and / will never be
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// matched. An anonymous regexp pattern is allowed, using an empty string
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// before the colon in the placeholder, such as {:\\d+}
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//
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// The special placeholder of asterisk matches the rest of the requested
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// URL. Any trailing characters in the pattern are ignored. This is the only
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// placeholder which will match / characters.
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//
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// Examples:
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// "/user/{name}" matches "/user/jsmith" but not "/user/jsmith/info" or "/user/jsmith/"
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// "/user/{name}/info" matches "/user/jsmith/info"
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// "/page/*" matches "/page/intro/latest"
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// "/page/*/index" also matches "/page/intro/latest"
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// "/date/{yyyy:\\d\\d\\d\\d}/{mm:\\d\\d}/{dd:\\d\\d}" matches "/date/2017/04/01"
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//
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package chi
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import "net/http"
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// NewRouter returns a new Mux object that implements the Router interface.
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func NewRouter() *Mux {
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return NewMux()
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}
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// Router consisting of the core routing methods used by chi's Mux,
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// using only the standard net/http.
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type Router interface {
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http.Handler
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Routes
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// Use appends one or more middlewares onto the Router stack.
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Use(middlewares ...func(http.Handler) http.Handler)
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// With adds inline middlewares for an endpoint handler.
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With(middlewares ...func(http.Handler) http.Handler) Router
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// Group adds a new inline-Router along the current routing
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// path, with a fresh middleware stack for the inline-Router.
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Group(fn func(r Router)) Router
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// Route mounts a sub-Router along a `pattern`` string.
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Route(pattern string, fn func(r Router)) Router
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// Mount attaches another http.Handler along ./pattern/*
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Mount(pattern string, h http.Handler)
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// Handle and HandleFunc adds routes for `pattern` that matches
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// all HTTP methods.
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Handle(pattern string, h http.Handler)
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HandleFunc(pattern string, h http.HandlerFunc)
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// Method and MethodFunc adds routes for `pattern` that matches
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// the `method` HTTP method.
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Method(method, pattern string, h http.Handler)
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MethodFunc(method, pattern string, h http.HandlerFunc)
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// HTTP-method routing along `pattern`
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Connect(pattern string, h http.HandlerFunc)
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Delete(pattern string, h http.HandlerFunc)
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Get(pattern string, h http.HandlerFunc)
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Head(pattern string, h http.HandlerFunc)
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Options(pattern string, h http.HandlerFunc)
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Patch(pattern string, h http.HandlerFunc)
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Post(pattern string, h http.HandlerFunc)
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Put(pattern string, h http.HandlerFunc)
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Trace(pattern string, h http.HandlerFunc)
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// NotFound defines a handler to respond whenever a route could
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// not be found.
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NotFound(h http.HandlerFunc)
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// MethodNotAllowed defines a handler to respond whenever a method is
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// not allowed.
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MethodNotAllowed(h http.HandlerFunc)
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}
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// Routes interface adds two methods for router traversal, which is also
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// used by the `docgen` subpackage to generation documentation for Routers.
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type Routes interface {
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// Routes returns the routing tree in an easily traversable structure.
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Routes() []Route
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// Middlewares returns the list of middlewares in use by the router.
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Middlewares() Middlewares
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// Match searches the routing tree for a handler that matches
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// the method/path - similar to routing a http request, but without
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// executing the handler thereafter.
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Match(rctx *Context, method, path string) bool
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}
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// Middlewares type is a slice of standard middleware handlers with methods
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// to compose middleware chains and http.Handler's.
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type Middlewares []func(http.Handler) http.Handler
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