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Move Profiler into specific http.Handler

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Signed-off-by: Michael Crosby <crosbymichael@gmail.com>
This commit is contained in:
Michael Crosby 2015-03-31 11:38:17 -07:00
parent ddbc68f564
commit 7609d52797
2 changed files with 53 additions and 31 deletions
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52
api/server/profiler.go Normal file
View file

@ -0,0 +1,52 @@
package server
import (
"expvar"
"fmt"
"net/http"
"net/http/pprof"
"github.com/gorilla/mux"
)
func NewProfiler() http.Handler {
var (
p = &Profiler{}
r = mux.NewRouter()
)
r.HandleFunc("/vars", p.expVars)
r.HandleFunc("/pprof/", pprof.Index)
r.HandleFunc("/pprof/cmdline", pprof.Cmdline)
r.HandleFunc("/pprof/profile", pprof.Profile)
r.HandleFunc("/pprof/symbol", pprof.Symbol)
r.HandleFunc("/pprof/block", pprof.Handler("block").ServeHTTP)
r.HandleFunc("/pprof/heap", pprof.Handler("heap").ServeHTTP)
r.HandleFunc("/pprof/goroutine", pprof.Handler("goroutine").ServeHTTP)
r.HandleFunc("/pprof/threadcreate", pprof.Handler("threadcreate").ServeHTTP)
p.r = r
return p
}
// Profiler enables pprof and expvar support via a HTTP API.
type Profiler struct {
r *mux.Router
}
func (p *Profiler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
p.r.ServeHTTP(w, r)
}
// Replicated from expvar.go as not public.
func (p *Profiler) expVars(w http.ResponseWriter, r *http.Request) {
first := true
w.Header().Set("Content-Type", "application/json; charset=utf-8")
fmt.Fprintf(w, "{\n")
expvar.Do(func(kv expvar.KeyValue) {
if !first {
fmt.Fprintf(w, ",\n")
}
first = false
fmt.Fprintf(w, "%q: %s", kv.Key, kv.Value)
})
fmt.Fprintf(w, "\n}\n")
}

32
api/server/server.go
View file

@ -6,13 +6,11 @@ import (
"encoding/base64"
"encoding/json"
"expvar"
"fmt"
"io"
"io/ioutil"
"net"
"net/http"
"net/http/pprof"
"os"
"strconv"
"strings"
@ -1308,38 +1306,11 @@ func makeHttpHandler(eng *engine.Engine, logging bool, localMethod string, local
}
}
// Replicated from expvar.go as not public.
func expvarHandler(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "application/json; charset=utf-8")
fmt.Fprintf(w, "{\n")
first := true
expvar.Do(func(kv expvar.KeyValue) {
if !first {
fmt.Fprintf(w, ",\n")
}
first = false
fmt.Fprintf(w, "%q: %s", kv.Key, kv.Value)
})
fmt.Fprintf(w, "\n}\n")
}
func AttachProfiler(router *mux.Router) {
router.HandleFunc("/debug/vars", expvarHandler)
router.HandleFunc("/debug/pprof/", pprof.Index)
router.HandleFunc("/debug/pprof/cmdline", pprof.Cmdline)
router.HandleFunc("/debug/pprof/profile", pprof.Profile)
router.HandleFunc("/debug/pprof/symbol", pprof.Symbol)
router.HandleFunc("/debug/pprof/block", pprof.Handler("block").ServeHTTP)
router.HandleFunc("/debug/pprof/heap", pprof.Handler("heap").ServeHTTP)
router.HandleFunc("/debug/pprof/goroutine", pprof.Handler("goroutine").ServeHTTP)
router.HandleFunc("/debug/pprof/threadcreate", pprof.Handler("threadcreate").ServeHTTP)
}
// we keep enableCors just for legacy usage, need to be removed in the future
func createRouter(eng *engine.Engine, logging, enableCors bool, corsHeaders string, dockerVersion string) *mux.Router {
r := mux.NewRouter()
if os.Getenv("DEBUG") != "" {
AttachProfiler(r)
r.Handle("/debug", NewProfiler())
}
m := map[string]map[string]HttpApiFunc{
"GET": {
@ -1494,7 +1465,6 @@ func newListener(proto, addr string, bufferRequests bool) (net.Listener, error)
if bufferRequests {
return listenbuffer.NewListenBuffer(proto, addr, activationLock)
}
return net.Listen(proto, addr)
}