From bd40dcfc2bc7c9014ea1f33482fb63aacbcdfe87 Mon Sep 17 00:00:00 2001 From: Valentin Rothberg Date: Tue, 8 Jan 2019 14:52:57 +0100 Subject: vendor: update everything * If possible, update each dependency to the latest available version. * Use releases over commit IDs and avoid vendoring branches. Signed-off-by: Valentin Rothberg --- .../github.com/docker/distribution/context/http.go | 366 --------------------- 1 file changed, 366 deletions(-) delete mode 100644 vendor/github.com/docker/distribution/context/http.go (limited to 'vendor/github.com/docker/distribution/context/http.go') diff --git a/vendor/github.com/docker/distribution/context/http.go b/vendor/github.com/docker/distribution/context/http.go deleted file mode 100644 index 7d65c8524..000000000 --- a/vendor/github.com/docker/distribution/context/http.go +++ /dev/null @@ -1,366 +0,0 @@ -package context - -import ( - "errors" - "net" - "net/http" - "strings" - "sync" - "time" - - "github.com/docker/distribution/uuid" - "github.com/gorilla/mux" - log "github.com/sirupsen/logrus" -) - -// Common errors used with this package. -var ( - ErrNoRequestContext = errors.New("no http request in context") - ErrNoResponseWriterContext = errors.New("no http response in context") -) - -func parseIP(ipStr string) net.IP { - ip := net.ParseIP(ipStr) - if ip == nil { - log.Warnf("invalid remote IP address: %q", ipStr) - } - return ip -} - -// RemoteAddr extracts the remote address of the request, taking into -// account proxy headers. -func RemoteAddr(r *http.Request) string { - if prior := r.Header.Get("X-Forwarded-For"); prior != "" { - proxies := strings.Split(prior, ",") - if len(proxies) > 0 { - remoteAddr := strings.Trim(proxies[0], " ") - if parseIP(remoteAddr) != nil { - return remoteAddr - } - } - } - // X-Real-Ip is less supported, but worth checking in the - // absence of X-Forwarded-For - if realIP := r.Header.Get("X-Real-Ip"); realIP != "" { - if parseIP(realIP) != nil { - return realIP - } - } - - return r.RemoteAddr -} - -// RemoteIP extracts the remote IP of the request, taking into -// account proxy headers. -func RemoteIP(r *http.Request) string { - addr := RemoteAddr(r) - - // Try parsing it as "IP:port" - if ip, _, err := net.SplitHostPort(addr); err == nil { - return ip - } - - return addr -} - -// WithRequest places the request on the context. The context of the request -// is assigned a unique id, available at "http.request.id". The request itself -// is available at "http.request". Other common attributes are available under -// the prefix "http.request.". If a request is already present on the context, -// this method will panic. -func WithRequest(ctx Context, r *http.Request) Context { - if ctx.Value("http.request") != nil { - // NOTE(stevvooe): This needs to be considered a programming error. It - // is unlikely that we'd want to have more than one request in - // context. - panic("only one request per context") - } - - return &httpRequestContext{ - Context: ctx, - startedAt: time.Now(), - id: uuid.Generate().String(), - r: r, - } -} - -// GetRequest returns the http request in the given context. Returns -// ErrNoRequestContext if the context does not have an http request associated -// with it. -func GetRequest(ctx Context) (*http.Request, error) { - if r, ok := ctx.Value("http.request").(*http.Request); r != nil && ok { - return r, nil - } - return nil, ErrNoRequestContext -} - -// GetRequestID attempts to resolve the current request id, if possible. An -// error is return if it is not available on the context. -func GetRequestID(ctx Context) string { - return GetStringValue(ctx, "http.request.id") -} - -// WithResponseWriter returns a new context and response writer that makes -// interesting response statistics available within the context. -func WithResponseWriter(ctx Context, w http.ResponseWriter) (Context, http.ResponseWriter) { - if closeNotifier, ok := w.(http.CloseNotifier); ok { - irwCN := &instrumentedResponseWriterCN{ - instrumentedResponseWriter: instrumentedResponseWriter{ - ResponseWriter: w, - Context: ctx, - }, - CloseNotifier: closeNotifier, - } - - return irwCN, irwCN - } - - irw := instrumentedResponseWriter{ - ResponseWriter: w, - Context: ctx, - } - return &irw, &irw -} - -// GetResponseWriter returns the http.ResponseWriter from the provided -// context. If not present, ErrNoResponseWriterContext is returned. The -// returned instance provides instrumentation in the context. -func GetResponseWriter(ctx Context) (http.ResponseWriter, error) { - v := ctx.Value("http.response") - - rw, ok := v.(http.ResponseWriter) - if !ok || rw == nil { - return nil, ErrNoResponseWriterContext - } - - return rw, nil -} - -// getVarsFromRequest let's us change request vars implementation for testing -// and maybe future changes. -var getVarsFromRequest = mux.Vars - -// WithVars extracts gorilla/mux vars and makes them available on the returned -// context. Variables are available at keys with the prefix "vars.". For -// example, if looking for the variable "name", it can be accessed as -// "vars.name". Implementations that are accessing values need not know that -// the underlying context is implemented with gorilla/mux vars. -func WithVars(ctx Context, r *http.Request) Context { - return &muxVarsContext{ - Context: ctx, - vars: getVarsFromRequest(r), - } -} - -// GetRequestLogger returns a logger that contains fields from the request in -// the current context. If the request is not available in the context, no -// fields will display. Request loggers can safely be pushed onto the context. -func GetRequestLogger(ctx Context) Logger { - return GetLogger(ctx, - "http.request.id", - "http.request.method", - "http.request.host", - "http.request.uri", - "http.request.referer", - "http.request.useragent", - "http.request.remoteaddr", - "http.request.contenttype") -} - -// GetResponseLogger reads the current response stats and builds a logger. -// Because the values are read at call time, pushing a logger returned from -// this function on the context will lead to missing or invalid data. Only -// call this at the end of a request, after the response has been written. -func GetResponseLogger(ctx Context) Logger { - l := getLogrusLogger(ctx, - "http.response.written", - "http.response.status", - "http.response.contenttype") - - duration := Since(ctx, "http.request.startedat") - - if duration > 0 { - l = l.WithField("http.response.duration", duration.String()) - } - - return l -} - -// httpRequestContext makes information about a request available to context. -type httpRequestContext struct { - Context - - startedAt time.Time - id string - r *http.Request -} - -// Value returns a keyed element of the request for use in the context. To get -// the request itself, query "request". For other components, access them as -// "request.". For example, r.RequestURI -func (ctx *httpRequestContext) Value(key interface{}) interface{} { - if keyStr, ok := key.(string); ok { - if keyStr == "http.request" { - return ctx.r - } - - if !strings.HasPrefix(keyStr, "http.request.") { - goto fallback - } - - parts := strings.Split(keyStr, ".") - - if len(parts) != 3 { - goto fallback - } - - switch parts[2] { - case "uri": - return ctx.r.RequestURI - case "remoteaddr": - return RemoteAddr(ctx.r) - case "method": - return ctx.r.Method - case "host": - return ctx.r.Host - case "referer": - referer := ctx.r.Referer() - if referer != "" { - return referer - } - case "useragent": - return ctx.r.UserAgent() - case "id": - return ctx.id - case "startedat": - return ctx.startedAt - case "contenttype": - ct := ctx.r.Header.Get("Content-Type") - if ct != "" { - return ct - } - } - } - -fallback: - return ctx.Context.Value(key) -} - -type muxVarsContext struct { - Context - vars map[string]string -} - -func (ctx *muxVarsContext) Value(key interface{}) interface{} { - if keyStr, ok := key.(string); ok { - if keyStr == "vars" { - return ctx.vars - } - - if strings.HasPrefix(keyStr, "vars.") { - keyStr = strings.TrimPrefix(keyStr, "vars.") - } - - if v, ok := ctx.vars[keyStr]; ok { - return v - } - } - - return ctx.Context.Value(key) -} - -// instrumentedResponseWriterCN provides response writer information in a -// context. It implements http.CloseNotifier so that users can detect -// early disconnects. -type instrumentedResponseWriterCN struct { - instrumentedResponseWriter - http.CloseNotifier -} - -// instrumentedResponseWriter provides response writer information in a -// context. This variant is only used in the case where CloseNotifier is not -// implemented by the parent ResponseWriter. -type instrumentedResponseWriter struct { - http.ResponseWriter - Context - - mu sync.Mutex - status int - written int64 -} - -func (irw *instrumentedResponseWriter) Write(p []byte) (n int, err error) { - n, err = irw.ResponseWriter.Write(p) - - irw.mu.Lock() - irw.written += int64(n) - - // Guess the likely status if not set. - if irw.status == 0 { - irw.status = http.StatusOK - } - - irw.mu.Unlock() - - return -} - -func (irw *instrumentedResponseWriter) WriteHeader(status int) { - irw.ResponseWriter.WriteHeader(status) - - irw.mu.Lock() - irw.status = status - irw.mu.Unlock() -} - -func (irw *instrumentedResponseWriter) Flush() { - if flusher, ok := irw.ResponseWriter.(http.Flusher); ok { - flusher.Flush() - } -} - -func (irw *instrumentedResponseWriter) Value(key interface{}) interface{} { - if keyStr, ok := key.(string); ok { - if keyStr == "http.response" { - return irw - } - - if !strings.HasPrefix(keyStr, "http.response.") { - goto fallback - } - - parts := strings.Split(keyStr, ".") - - if len(parts) != 3 { - goto fallback - } - - irw.mu.Lock() - defer irw.mu.Unlock() - - switch parts[2] { - case "written": - return irw.written - case "status": - return irw.status - case "contenttype": - contentType := irw.Header().Get("Content-Type") - if contentType != "" { - return contentType - } - } - } - -fallback: - return irw.Context.Value(key) -} - -func (irw *instrumentedResponseWriterCN) Value(key interface{}) interface{} { - if keyStr, ok := key.(string); ok { - if keyStr == "http.response" { - return irw - } - } - - return irw.instrumentedResponseWriter.Value(key) -} -- cgit v1.2.3-54-g00ecf