diff options
Diffstat (limited to 'middleware/pprof/pprof.go')
-rw-r--r-- | middleware/pprof/pprof.go | 37 |
1 files changed, 31 insertions, 6 deletions
diff --git a/middleware/pprof/pprof.go b/middleware/pprof/pprof.go index 677690ff8..2c812f246 100644 --- a/middleware/pprof/pprof.go +++ b/middleware/pprof/pprof.go @@ -2,8 +2,9 @@ package pprof import ( "log" + "net" "net/http" - _ "net/http/pprof" + pp "net/http/pprof" "github.com/miekg/coredns/middleware" @@ -11,10 +12,10 @@ import ( "golang.org/x/net/context" ) -const addr = "localhost:8053" - type Handler struct { Next middleware.Handler + ln net.Listener + mux *http.ServeMux } // ServeDNS passes all other requests up the chain. @@ -23,10 +24,34 @@ func (h *Handler) ServeDNS(ctx context.Context, w dns.ResponseWriter, r *dns.Msg } func (h *Handler) Start() error { + if ln, err := net.Listen("tcp", addr); err != nil { + log.Printf("[ERROR] Failed to start pprof handler: %s", err) + return err + } else { + h.ln = ln + } + + h.mux = http.NewServeMux() + h.mux.HandleFunc(path+"/", pp.Index) + h.mux.HandleFunc(path+"/cmdline", pp.Cmdline) + h.mux.HandleFunc(path+"/profile", pp.Profile) + h.mux.HandleFunc(path+"/symbol", pp.Symbol) + h.mux.HandleFunc(path+"/trace", pp.Trace) + go func() { - if err := http.ListenAndServe(addr, nil); err != nil { - log.Printf("[ERROR] Failed to start pprof handler: %s", err) - } + http.Serve(h.ln, h.mux) }() return nil } + +func (h *Handler) Shutdown() error { + if h.ln != nil { + return h.ln.Close() + } + return nil +} + +const ( + addr = "localhost:6053" + path = "/debug/pprof" +) |