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handlers.go
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handlers.go
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// Copyright 2019 Yunion
//
// 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 appsrv
import (
"context"
"fmt"
"net/http"
"net/http/pprof"
"yunion.io/x/pkg/util/version"
)
type FilterHandler func(ctx context.Context, w http.ResponseWriter, r *http.Request)
type TMiddleware func(handler FilterHandler) FilterHandler
func VersionHandler(ctx context.Context, w http.ResponseWriter, r *http.Request) {
fmt.Fprintf(w, version.GetShortString())
}
func PingHandler(ctx context.Context, w http.ResponseWriter, r *http.Request) {
fmt.Fprintf(w, "pong")
}
/*
func CORSHandler(ctx context.Context, w http.ResponseWriter, r *http.Request) {
reqHdrs, enableCors := r.Header["Access-Control-Request-Headers"]
if enableCors {
w.Header().Set("Access-Control-Allow-Origin", getRequestOrigin(r))
allowHdrs := strings.Join(reqHdrs, ",")
allowHdrs = fmt.Sprintf("%s,%s", allowHdrs, "Authorization")
w.Header().Set("Vary", "Origin,Access-Control-Request-Method,Access-Control-Request-Headers")
w.Header().Set("Access-Control-Allow-Headers", allowHdrs)
w.Header().Set("Access-Control-Allow-Methods", "OPTIONS,GET,POST,PUT,PATCH,DELETE")
w.Header().Set("Access-Control-Allow-Credentials", "true")
w.Header().Set("Access-Control-Expose-Headers", allowHdrs)
w.Header().Set("Access-Control-Max-Age", "86400")
}
}*/
func AddPProfHandler(prefix string, app *Application) {
pp := "/debug/pprof"
if prefix != "" {
prefix = fmt.Sprintf("%s/%s", prefix, pp)
} else {
prefix = pp
}
app.AddHandler("GET", fmt.Sprintf("%s/", prefix), profIndex).SetProcessNoTimeout()
app.AddHandler("GET", fmt.Sprintf("%s/cmdline", prefix), profCmdline).SetProcessNoTimeout()
app.AddHandler("GET", fmt.Sprintf("%s/profile", prefix), profProfile).SetProcessNoTimeout()
app.AddHandler("GET", fmt.Sprintf("%s/symbol", prefix), profSymbol).SetProcessNoTimeout()
app.AddHandler("POST", fmt.Sprintf("%s/symbol", prefix), profSymbol).SetProcessNoTimeout()
app.AddHandler("GET", fmt.Sprintf("%s/trace", prefix), profTrace).SetProcessNoTimeout()
}
func profIndex(_ context.Context, w http.ResponseWriter, r *http.Request) {
pprof.Index(w, r)
}
func profCmdline(_ context.Context, w http.ResponseWriter, r *http.Request) {
pprof.Cmdline(w, r)
}
func profProfile(_ context.Context, w http.ResponseWriter, r *http.Request) {
pprof.Profile(w, r)
}
func profSymbol(_ context.Context, w http.ResponseWriter, r *http.Request) {
pprof.Symbol(w, r)
}
func profTrace(_ context.Context, w http.ResponseWriter, r *http.Request) {
pprof.Trace(w, r)
}