add some logging

etcdserver2/etcdhttp/http.go

@@ -80,7 +80,7 @@ func Sender(p Peers) func(msgs []raftpb.Message) {
 					// TODO: unknown peer id.. what do we do? I
 					// don't think his should ever happen, need to
 					// look into this further.
-					elog.TODO()
+					log.Println("etcdhttp: no addr for %d", m.To)
 					break
 				}
 
@@ -92,7 +92,7 @@ func Sender(p Peers) func(msgs []raftpb.Message) {
 				// of messages out at a time.
 				data, err := m.Marshal()
 				if err != nil {
-					elog.TODO()
+					log.Println("etcdhttp: dropping message:", err)
 					break // drop bad message
 				}
 				if httpPost(url, data) {
@@ -177,14 +177,15 @@ func (h Handler) serveKeys(ctx context.Context, w http.ResponseWriter, r *http.R
 func (h Handler) serveRaft(ctx context.Context, w http.ResponseWriter, r *http.Request) {
 	b, err := ioutil.ReadAll(r.Body)
 	if err != nil {
-		elog.TODO()
+		log.Println("etcdhttp: error reading raft message:", err)
 	}
 	var m raftpb.Message
 	if err := m.Unmarshal(b); err != nil {
-		elog.TODO()
+		log.Println("etcdhttp: error unmarshaling raft message:", err)
 	}
+	log.Printf("etcdhttp: raft recv message: %+v", m)
 	if err := h.Server.Node.Step(ctx, m); err != nil {
-		elog.TODO()
+		log.Println("etcdhttp: error stepping raft messages:", err)
 	}
 }
 

raft/example_test.go

@@ -1,8 +1,6 @@
 package raft
 
 import (
-	"code.google.com/p/go.net/context"
-
 	pb "github.com/coreos/etcd/raft/raftpb"
 )
 
@@ -12,7 +10,7 @@ func saveStateToDisk(st pb.State)    {}
 func saveToDisk(ents []pb.Entry)     {}
 
 func Example_Node() {
-	n := Start(context.Background(), 0, nil)
+	n := Start(0, nil)
 
 	// stuff to n happens in other goroutines
 

raft/node.go

@@ -3,6 +3,7 @@ package raft
 
 import (
 	"errors"
+	"log"
 
 	"code.google.com/p/go.net/context"
 	pb "github.com/coreos/etcd/raft/raftpb"
@@ -71,11 +72,13 @@ func (n *Node) run(r *raft) {
 	var prev Ready
 	for {
 		if r.hasLeader() {
+			log.Printf("raft: found leader %#x - unblocking proposals", r.lead)
 			propc = n.propc
 		} else {
 			// We cannot accept proposals because we don't know who
 			// to send them to, so we'll apply back-pressure and
 			// block senders.
+			log.Println("raft: no leader - blocking proposals")
 			propc = nil
 		}
 

raft/node_test.go

@@ -12,7 +12,7 @@ func TestNode(t *testing.T) {
 	ctx, cancel := context.WithCancel(context.Background())
 	defer cancel()
 
-	n := Start(ctx, 1, []int64{1})
+	n := Start(1, []int64{1})
 	ch := make(chan Ready)
 	go func() {
 		for {