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middleware.go
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middleware.go
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// Copyright (c) 2021 The static-server Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package router
import (
"github.com/gorilla/mux"
log "k8s.io/klog/v2"
"net/http"
"strings"
)
//LogMiddleware automatically sets the Access-Control-Allow-Methods response header
func LogMiddleware(r *mux.Router) mux.MiddlewareFunc {
return func(next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
if strings.Contains(req.RequestURI, "/api") {
log.V(3).Infof("METHOD: %+v, URL: %+v, REMOTE IP:%+v", req.Method, req.RequestURI, req.RemoteAddr)
} else {
log.Infof("METHOD: %+v, URL: %+v, REMOTE IP:%+v", req.Method, req.RequestURI, req.RemoteAddr)
}
next.ServeHTTP(w, req)
})
}
}
var allMethods = []string{http.MethodGet, http.MethodPut, http.MethodPatch, http.MethodOptions,
http.MethodDelete, http.MethodConnect}
var allAllowHeaders = []string{
"X-PINGOTHER", "Content-Type",
}
//CORSMethodMiddleware automatically sets the Access-Control-Allow-Methods response header
func CORSMethodMiddleware(r *mux.Router) mux.MiddlewareFunc {
return func(next http.Handler) http.Handler {
return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
w.Header().Set("Access-Control-Allow-Methods", strings.Join(allMethods, ","))
w.Header().Set("Access-Control-Allow-Origin", "*")
w.Header().Set("Access-Control-Allow-Headers", strings.Join(allAllowHeaders, ","))
next.ServeHTTP(w, req)
})
}
}