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Merge pull request #1145 from coreos/fix_panic

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raft: node ignores unexpected local messages receiving from network
This commit is contained in:
Xiang Li 2014-09-23 14:11:56 -07:00
commit 03152004d7
2 changed files with 26 additions and 8 deletions
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15
raft/node.go
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@ -231,11 +231,20 @@ func (n *node) Tick() {
}
func (n *node) Campaign(ctx context.Context) error {
return n.Step(ctx, pb.Message{Type: msgHup})
return n.step(ctx, pb.Message{Type: msgHup})
}
func (n *node) Propose(ctx context.Context, data []byte) error {
return n.Step(ctx, pb.Message{Type: msgProp, Entries: []pb.Entry{{Data: data}}})
return n.step(ctx, pb.Message{Type: msgProp, Entries: []pb.Entry{{Data: data}}})
}
func (n *node) Step(ctx context.Context, m pb.Message) error {
// ignore unexpected local messages receiving over network
if m.Type == msgHup || m.Type == msgBeat {
// TODO: return an error?
return nil
}
return n.step(ctx, m)
}
func (n *node) ProposeConfChange(ctx context.Context, cc pb.ConfChange) error {
@ -248,7 +257,7 @@ func (n *node) ProposeConfChange(ctx context.Context, cc pb.ConfChange) error {
// Step advances the state machine using msgs. The ctx.Err() will be returned,
// if any.
func (n *node) Step(ctx context.Context, m pb.Message) error {
func (n *node) step(ctx context.Context, m pb.Message) error {
ch := n.recvc
if m.Type == msgProp {
ch = n.propc

11
raft/node_test.go
View File

@ -18,7 +18,8 @@ func TestNodeStep(t *testing.T) {
propc: make(chan raftpb.Message, 1),
recvc: make(chan raftpb.Message, 1),
}
n.Step(context.TODO(), raftpb.Message{Type: int64(i)})
msgt := int64(i)
n.Step(context.TODO(), raftpb.Message{Type: msgt})
// Proposal goes to proc chan. Others go to recvc chan.
if int64(i) == msgProp {
select {
@ -26,6 +27,13 @@ func TestNodeStep(t *testing.T) {
default:
t.Errorf("%d: cannot receive %s on propc chan", i, mtmap[i])
}
} else {
if msgt == msgBeat || msgt == msgHup {
select {
case <-n.recvc:
t.Errorf("%d: step should ignore msgHub/msgBeat", i, mtmap[i])
default:
}
} else {
select {
case <-n.recvc:
@ -34,6 +42,7 @@ func TestNodeStep(t *testing.T) {
}
}
}
}
}
// Cancel and Stop should unblock Step()