moby/api/server/profiler.go
allencloud 8879458faa add trace in docker engine's pprof to show execution trace in binary form
Signed-off-by: allencloud <allen.sun@daocloud.io>
2016-05-13 15:24:44 +08:00

41 lines
1.1 KiB
Go

package server
import (
"expvar"
"fmt"
"net/http"
"net/http/pprof"
"github.com/gorilla/mux"
)
const debugPathPrefix = "/debug/"
func profilerSetup(mainRouter *mux.Router) {
var r = mainRouter.PathPrefix(debugPathPrefix).Subrouter()
r.HandleFunc("/vars", 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/trace", pprof.Trace)
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)
}
// Replicated from expvar.go as not public.
func 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")
}