mirror of
https://github.com/labstack/echo.git
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131 lines
3.1 KiB
Go
131 lines
3.1 KiB
Go
package standard
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import (
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"bufio"
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"io"
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"net"
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"net/http"
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"github.com/labstack/echo/engine"
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"github.com/labstack/gommon/log"
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)
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type (
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// Response implements `engine.Response`.
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Response struct {
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http.ResponseWriter
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header engine.Header
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status int
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size int64
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committed bool
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writer io.Writer
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logger *log.Logger
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}
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responseAdapter struct {
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http.ResponseWriter
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response *Response
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}
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)
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// Header implements `engine.Response#Header` function.
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func (r *Response) Header() engine.Header {
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return r.header
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}
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// WriteHeader implements `engine.Response#WriteHeader` function.
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func (r *Response) WriteHeader(code int) {
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if r.committed {
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r.logger.Warn("response already committed")
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return
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}
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r.status = code
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r.ResponseWriter.WriteHeader(code)
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r.committed = true
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}
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// Write implements `engine.Response#Write` function.
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func (r *Response) Write(b []byte) (n int, err error) {
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n, err = r.writer.Write(b)
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r.size += int64(n)
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return
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}
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// Status implements `engine.Response#Status` function.
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func (r *Response) Status() int {
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return r.status
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}
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// Size implements `engine.Response#Size` function.
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func (r *Response) Size() int64 {
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return r.size
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}
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// Committed implements `engine.Response#Committed` function.
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func (r *Response) Committed() bool {
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return r.committed
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}
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// Writer implements `engine.Response#Writer` function.
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func (r *Response) Writer() io.Writer {
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return r.writer
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}
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// SetWriter implements `engine.Response#SetWriter` function.
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func (r *Response) SetWriter(w io.Writer) {
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r.writer = w
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}
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// Flush implements the http.Flusher interface to allow an HTTP handler to flush
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// buffered data to the client.
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// See https://golang.org/pkg/net/http/#Flusher
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func (r *Response) Flush() {
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r.ResponseWriter.(http.Flusher).Flush()
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}
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// Hijack implements the http.Hijacker interface to allow an HTTP handler to
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// take over the connection.
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// See https://golang.org/pkg/net/http/#Hijacker
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func (r *Response) Hijack() (net.Conn, *bufio.ReadWriter, error) {
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return r.ResponseWriter.(http.Hijacker).Hijack()
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}
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// CloseNotify implements the http.CloseNotifier interface to allow detecting
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// when the underlying connection has gone away.
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// This mechanism can be used to cancel long operations on the server if the
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// client has disconnected before the response is ready.
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// See https://golang.org/pkg/net/http/#CloseNotifier
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func (r *Response) CloseNotify() <-chan bool {
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return r.ResponseWriter.(http.CloseNotifier).CloseNotify()
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}
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func (r *Response) reset(w http.ResponseWriter, a *responseAdapter, h engine.Header) {
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r.ResponseWriter = a
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r.header = h
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r.status = http.StatusOK
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r.size = 0
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r.committed = false
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r.writer = w
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}
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func (a *responseAdapter) Write(b []byte) (n int, err error) {
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return a.response.Write(b)
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}
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func (a *responseAdapter) Flush() {
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a.ResponseWriter.(http.Flusher).Flush()
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}
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func (a *responseAdapter) Hijack() (net.Conn, *bufio.ReadWriter, error) {
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return a.ResponseWriter.(http.Hijacker).Hijack()
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}
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func (a *responseAdapter) CloseNotify() <-chan bool {
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return a.ResponseWriter.(http.CloseNotifier).CloseNotify()
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}
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func (a *responseAdapter) reset(w http.ResponseWriter, r *Response) {
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a.ResponseWriter = w
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a.response = r
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}
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