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http: Add support for profiling

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This commit is contained in:
Martin Polden
2020-09-05 12:21:02 +02:00
parent fed1ffaf81
commit 6878f54585
2 changed files with 25 additions and 3 deletions
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22
http/http.go
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@ -10,6 +10,7 @@ import (
"github.com/mpolden/echoip/iputil"
"github.com/mpolden/echoip/iputil/geo"
"github.com/mpolden/echoip/useragent"
"net/http/pprof"
"math/big"
"net"
@ -29,6 +30,7 @@ type Server struct {
LookupPort func(net.IP, uint64) error
cache *Cache
gr geo.Reader
profile bool
}
type Response struct {
@ -57,8 +59,8 @@ type PortResponse struct {
Reachable bool `json:"reachable"`
}
func New(db geo.Reader, cache *Cache) *Server {
return &Server{cache: cache, gr: db}
func New(db geo.Reader, cache *Cache, profile bool) *Server {
return &Server{cache: cache, gr: db, profile: profile}
}
func ipFromForwardedForHeader(v string) string {
@ -325,6 +327,13 @@ func cliMatcher(r *http.Request) bool {
type appHandler func(http.ResponseWriter, *http.Request) *appError
func wrapHandlerFunc(f http.HandlerFunc) appHandler {
return func(w http.ResponseWriter, r *http.Request) *appError {
f.ServeHTTP(w, r)
return nil
}
}
func (fn appHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
if e := fn(w, r); e != nil { // e is *appError
// When Content-Type for error is JSON, we need to marshal the response into JSON
@ -379,6 +388,15 @@ func (s *Server) Handler() http.Handler {
r.RoutePrefix("GET", "/port/", s.PortHandler)
}
// Profiling
if s.profile {
r.Route("GET", "/debug/pprof/cmdline", wrapHandlerFunc(pprof.Cmdline))
r.Route("GET", "/debug/pprof/profile", wrapHandlerFunc(pprof.Profile))
r.Route("GET", "/debug/pprof/symbol", wrapHandlerFunc(pprof.Symbol))
r.Route("GET", "/debug/pprof/trace", wrapHandlerFunc(pprof.Trace))
r.RoutePrefix("GET", "/debug/pprof/", wrapHandlerFunc(pprof.Index))
}
return r.Handler()
}