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// SPDX-FileCopyrightText: 2020 Ethel Morgan
//
// SPDX-License-Identifier: MIT
package httputil
import (
"fmt"
"net/http"
"github.com/gorilla/mux"
"go.eth.moe/logger"
)
type (
responseWriter struct {
http.ResponseWriter
StatusCode int
}
)
func (rw *responseWriter) WriteHeader(code int) {
rw.StatusCode = code
rw.ResponseWriter.WriteHeader(code)
}
const (
kb = 1024
mb = 1024 * kb
)
// Logger is a middleware for logging HTTP requests and responses, using go.eth.moe/logger.
func Logger(next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
log, ctx := logger.FromContext(r.Context())
log.AddField("http.client", r.RemoteAddr)
if xForwardedFor := r.Header.Get("X-Forwarded-For"); xForwardedFor != "" {
log.AddField("http.client", xForwardedFor)
}
log.AddField("http.method", r.Method)
log.AddField("http.path", r.URL.Path)
log.AddField("http.useragent", r.UserAgent())
for k, v := range mux.Vars(r) {
log.AddField(fmt.Sprintf("http.vars.%s", k), v)
}
for k, vs := range r.URL.Query() {
if len(vs) == 1 {
log.AddField(fmt.Sprintf("http.query.%s", k), vs[0])
continue
}
log.AddField(fmt.Sprintf("http.query.%s", k), vs)
}
if err := r.ParseMultipartForm(10 * mb); err != nil {
log.WithError(err).Error("could not parse request form")
}
for k, vs := range r.Form {
if len(vs) == 1 {
log.AddField(fmt.Sprintf("http.form.%s", k), vs[0])
continue
}
log.AddField(fmt.Sprintf("http.form.%s", k), vs)
}
rw := responseWriter{ResponseWriter: w, StatusCode: 200}
next.ServeHTTP(&rw, r.WithContext(ctx))
log.AddField("http.status", rw.StatusCode)
log.Info("served HTTP request")
})
}
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