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path: root/middleware/pprof/pprof.go
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Diffstat (limited to 'middleware/pprof/pprof.go')
-rw-r--r--middleware/pprof/pprof.go37
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"
+)