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43 lines
1.5 KiB
43 lines
1.5 KiB
8 years ago
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// Package xhandler provides a bridge between http.Handler and net/context.
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//
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// xhandler enforces net/context in your handlers without sacrificing
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// compatibility with existing http.Handlers nor imposing a specific router.
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//
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// Thanks to net/context deadline management, xhandler is able to enforce
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// a per request deadline and will cancel the context in when the client close
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// the connection unexpectedly.
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//
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// You may create net/context aware middlewares pretty much the same way as
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// you would with http.Handler.
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package xhandler // import "github.com/rs/xhandler"
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import (
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"net/http"
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"golang.org/x/net/context"
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)
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// HandlerC is a net/context aware http.Handler
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type HandlerC interface {
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ServeHTTPC(context.Context, http.ResponseWriter, *http.Request)
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}
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// HandlerFuncC type is an adapter to allow the use of ordinary functions
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// as an xhandler.Handler. If f is a function with the appropriate signature,
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// xhandler.HandlerFuncC(f) is a xhandler.Handler object that calls f.
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type HandlerFuncC func(context.Context, http.ResponseWriter, *http.Request)
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// ServeHTTPC calls f(ctx, w, r).
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func (f HandlerFuncC) ServeHTTPC(ctx context.Context, w http.ResponseWriter, r *http.Request) {
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f(ctx, w, r)
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}
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// New creates a conventional http.Handler injecting the provided root
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// context to sub handlers. This handler is used as a bridge between conventional
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// http.Handler and context aware handlers.
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func New(ctx context.Context, h HandlerC) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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h.ServeHTTPC(ctx, w, r)
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})
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}
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