etcdserver, embed, v2http: move pprof setup to embed

Seems like a better place for prof setup since it's not specific to v2.

embed/etcd.go

@@ -117,7 +117,6 @@ func StartEtcd(inCfg *Config) (e *Etcd, err error) {
 		AutoCompactionRetention: cfg.AutoCompactionRetention,
 		QuotaBackendBytes:       cfg.QuotaBackendBytes,
 		StrictReconfigCheck:     cfg.StrictReconfigCheck,
-		EnablePprof:             cfg.EnablePprof,
 		ClientCertAuthEnabled:   cfg.ClientTLSInfo.ClientCertAuth,
 	}
 
@@ -230,6 +229,10 @@ func startClientListeners(cfg *Config) (sctxs map[string]*serveCtx, err error) {
 		plog.Warningf("ignoring client auto TLS since certs given")
 	}
 
+	if cfg.EnablePprof {
+		plog.Infof("pprof is enabled under %s", pprofPrefix)
+	}
+
 	sctxs = make(map[string]*serveCtx)
 	for _, u := range cfg.LCUrls {
 		sctx := newServeCtx()
@@ -284,6 +287,9 @@ func startClientListeners(cfg *Config) (sctxs map[string]*serveCtx, err error) {
 			}
 		}()
 		sctx.userHandlers = cfg.UserHandlers
+		if cfg.EnablePprof {
+			sctx.registerPprof()
+		}
 		sctxs[u.Host] = sctx
 	}
 	return sctxs, nil

embed/serve.go

@@ -20,6 +20,7 @@ import (
 	defaultLog "log"
 	"net"
 	"net/http"
+	"net/http/pprof"
 	"strings"
 	"time"
 
@@ -35,6 +36,8 @@ import (
 	"google.golang.org/grpc/credentials"
 )
 
+const pprofPrefix = "/debug/pprof"
+
 type serveCtx struct {
 	l        net.Listener
 	secure   bool
@@ -181,3 +184,23 @@ func (sctx *serveCtx) createMux(gwmux *gw.ServeMux, handler http.Handler) *http.
 	httpmux.Handle("/", handler)
 	return httpmux
 }
+
+func (sctx *serveCtx) registerPprof() {
+	f := func(s string, h http.Handler) {
+		if sctx.userHandlers[s] != nil {
+			plog.Warningf("path %s already registered by user handler", s)
+			return
+		}
+		sctx.userHandlers[s] = h
+	}
+	f(pprofPrefix+"/", http.HandlerFunc(pprof.Index))
+	f(pprofPrefix+"/profile", http.HandlerFunc(pprof.Profile))
+	f(pprofPrefix+"/symbol", http.HandlerFunc(pprof.Symbol))
+	f(pprofPrefix+"/cmdline", http.HandlerFunc(pprof.Cmdline))
+	f(pprofPrefix+"/trace", http.HandlerFunc(pprof.Trace))
+
+	f(pprofPrefix+"/heap", pprof.Handler("heap"))
+	f(pprofPrefix+"/goroutine", pprof.Handler("goroutine"))
+	f(pprofPrefix+"/threadcreate", pprof.Handler("threadcreate"))
+	f(pprofPrefix+"/block", pprof.Handler("block"))
+}

etcdserver/api/v2http/client.go

@@ -21,7 +21,6 @@ import (
 	"fmt"
 	"io/ioutil"
 	"net/http"
-	"net/http/pprof"
 	"net/url"
 	"path"
 	"strconv"
@@ -57,7 +56,6 @@ const (
 	healthPath               = "/health"
 	versionPath              = "/version"
 	configPath               = "/config"
-	pprofPrefix              = "/debug/pprof"
 )
 
 // NewClientHandler generates a muxed http.Handler with the given parameters to serve etcd client requests.
@@ -113,23 +111,6 @@ func NewClientHandler(server *etcdserver.EtcdServer, timeout time.Duration) http
 	mux.Handle(deprecatedMachinesPrefix, dmh)
 	handleAuth(mux, sech)
 
-	if server.IsPprofEnabled() {
-		plog.Infof("pprof is enabled under %s", pprofPrefix)
-
-		mux.HandleFunc(pprofPrefix+"/", pprof.Index)
-		mux.HandleFunc(pprofPrefix+"/profile", pprof.Profile)
-		mux.HandleFunc(pprofPrefix+"/symbol", pprof.Symbol)
-		mux.HandleFunc(pprofPrefix+"/cmdline", pprof.Cmdline)
-		// TODO: currently, we don't create an entry for pprof.Trace,
-		// because go 1.4 doesn't provide it. After support of go 1.4 is dropped,
-		// we should add the entry.
-
-		mux.Handle(pprofPrefix+"/heap", pprof.Handler("heap"))
-		mux.Handle(pprofPrefix+"/goroutine", pprof.Handler("goroutine"))
-		mux.Handle(pprofPrefix+"/threadcreate", pprof.Handler("threadcreate"))
-		mux.Handle(pprofPrefix+"/block", pprof.Handler("block"))
-	}
-
 	return requestLogger(mux)
 }
 

etcdserver/config.go

@@ -55,8 +55,6 @@ type ServerConfig struct {
 
 	StrictReconfigCheck bool
 
-	EnablePprof bool
-
 	// ClientCertAuthEnabled is true when cert has been signed by the client CA.
 	ClientCertAuthEnabled bool
 }

etcdserver/server.go

@@ -1098,8 +1098,6 @@ func (s *EtcdServer) Lead() uint64 { return atomic.LoadUint64(&s.r.lead) }
 
 func (s *EtcdServer) Leader() types.ID { return types.ID(s.Lead()) }
 
-func (s *EtcdServer) IsPprofEnabled() bool { return s.Cfg.EnablePprof }
-
 // configure sends a configuration change through consensus and
 // then waits for it to be applied to the server. It
 // will block until the change is performed or there is an error.