mirror of
https://github.com/containers/podman.git
synced 2025-11-04 08:56:05 +08:00
104 lines
2.9 KiB
Go
104 lines
2.9 KiB
Go
package server
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import (
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"bufio"
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"errors"
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"fmt"
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"net"
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"net/http"
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"runtime"
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"github.com/containers/podman/v4/version"
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"github.com/sirupsen/logrus"
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)
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type BufferedResponseWriter struct {
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b *bufio.Writer
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w http.ResponseWriter
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}
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// APIHandler is a wrapper to enhance HandlerFunc's and remove redundant code
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func (s *APIServer) APIHandler(h http.HandlerFunc) http.HandlerFunc {
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return func(w http.ResponseWriter, r *http.Request) {
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// Wrapper to hide some boilerplate
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s.apiWrapper(h, w, r, false)
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}
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}
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// An API Handler to help historical clients with broken parsing that expect
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// streaming JSON payloads to be reliably messaged framed (full JSON record
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// always fits in each read())
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func (s *APIServer) StreamBufferedAPIHandler(h http.HandlerFunc) http.HandlerFunc {
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return func(w http.ResponseWriter, r *http.Request) {
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// Wrapper to hide some boilerplate
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s.apiWrapper(h, w, r, true)
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}
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}
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func (s *APIServer) apiWrapper(h http.HandlerFunc, w http.ResponseWriter, r *http.Request, buffer bool) {
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if err := r.ParseForm(); err != nil {
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logrus.WithFields(logrus.Fields{
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"X-Reference-Id": r.Header.Get("X-Reference-Id"),
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}).Info("Failed Request: unable to parse form: " + err.Error())
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}
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cv := version.APIVersion[version.Compat][version.CurrentAPI]
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w.Header().Set("API-Version", fmt.Sprintf("%d.%d", cv.Major, cv.Minor))
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lv := version.APIVersion[version.Libpod][version.CurrentAPI].String()
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w.Header().Set("Libpod-API-Version", lv)
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w.Header().Set("Server", "Libpod/"+lv+" ("+runtime.GOOS+")")
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if s.CorsHeaders != "" {
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w.Header().Set("Access-Control-Allow-Origin", s.CorsHeaders)
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w.Header().Set("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept, X-Registry-Auth, Connection, Upgrade, X-Registry-Config")
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w.Header().Set("Access-Control-Allow-Methods", "HEAD, GET, POST, DELETE, PUT, OPTIONS")
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}
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if buffer {
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w = newBufferedResponseWriter(w)
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}
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h(w, r)
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}
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// VersionedPath prepends the version parsing code
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// any handler may override this default when registering URL(s)
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func VersionedPath(p string) string {
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return "/v{version:[0-9][0-9A-Za-z.-]*}" + p
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}
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func (w *BufferedResponseWriter) Header() http.Header {
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return w.w.Header()
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}
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func (w *BufferedResponseWriter) Hijack() (net.Conn, *bufio.ReadWriter, error) {
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_ = w.b.Flush()
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if wrapped, ok := w.w.(http.Hijacker); ok {
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return wrapped.Hijack()
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}
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return nil, nil, errors.New("ResponseWriter does not support hijacking")
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}
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func (w *BufferedResponseWriter) Write(b []byte) (int, error) {
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return w.b.Write(b)
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}
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func (w *BufferedResponseWriter) WriteHeader(statusCode int) {
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w.w.WriteHeader(statusCode)
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}
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func (w *BufferedResponseWriter) Flush() {
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_ = w.b.Flush()
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if wrapped, ok := w.w.(http.Flusher); ok {
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wrapped.Flush()
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}
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}
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func newBufferedResponseWriter(rw http.ResponseWriter) *BufferedResponseWriter {
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return &BufferedResponseWriter{
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bufio.NewWriterSize(rw, 8192),
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rw,
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}
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}
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