// Store a value in this peer local storage
func (dht *IpfsDHT) handlePutValue(ctx context.Context, p peer.ID, pmes *pb.Message) (*pb.Message, error) {
defer log.EventBegin(ctx, "handlePutValue", p).Done()
dskey := key.Key(pmes.GetKey()).DsKey()
if err := dht.verifyRecordLocally(pmes.GetRecord()); err != nil {
log.Debugf("Bad dht record in PUT from: %s. %s", key.Key(pmes.GetRecord().GetAuthor()), err)
return nil, err
}
data, err := proto.Marshal(pmes.GetRecord())
if err != nil {
return nil, err
}
err = dht.datastore.Put(dskey, data)
log.Debugf("%s handlePutValue %v", dht.self, dskey)
return pmes, err
}
func TestGetFailures(t *testing.T) {
if testing.Short() {
t.SkipNow()
}
ctx := context.Background()
mn, err := mocknet.FullMeshConnected(ctx, 2)
if err != nil {
t.Fatal(err)
}
hosts := mn.Hosts()
tsds := dssync.MutexWrap(ds.NewMapDatastore())
d := NewDHT(ctx, hosts[0], tsds)
d.Update(ctx, hosts[1].ID())
// Reply with failures to every message
hosts[1].SetStreamHandler(ProtocolDHT, func(s inet.Stream) {
defer s.Close()
io.Copy(ioutil.Discard, s)
})
// This one should time out
ctx1, _ := context.WithTimeout(context.Background(), 200*time.Millisecond)
if _, err := d.GetValue(ctx1, key.Key("test")); err != nil {
if merr, ok := err.(u.MultiErr); ok && len(merr) > 0 {
err = merr[0]
}
if err != context.DeadlineExceeded && err != context.Canceled {
t.Fatal("Got different error than we expected", err)
}
} else {
t.Fatal("Did not get expected error!")
}
t.Log("Timeout test passed.")
// Reply with failures to every message
hosts[1].SetStreamHandler(ProtocolDHT, func(s inet.Stream) {
defer s.Close()
pbr := ggio.NewDelimitedReader(s, inet.MessageSizeMax)
pbw := ggio.NewDelimitedWriter(s)
pmes := new(pb.Message)
if err := pbr.ReadMsg(pmes); err != nil {
panic(err)
}
resp := &pb.Message{
Type: pmes.Type,
}
if err := pbw.WriteMsg(resp); err != nil {
panic(err)
}
})
// This one should fail with NotFound.
// long context timeout to ensure we dont end too early.
// the dht should be exhausting its query and returning not found.
// (was 3 seconds before which should be _plenty_ of time, but maybe
// travis machines really have a hard time...)
ctx2, _ := context.WithTimeout(context.Background(), 20*time.Second)
_, err = d.GetValue(ctx2, key.Key("test"))
if err != nil {
if merr, ok := err.(u.MultiErr); ok && len(merr) > 0 {
err = merr[0]
}
if err != routing.ErrNotFound {
t.Fatalf("Expected ErrNotFound, got: %s", err)
}
} else {
t.Fatal("expected error, got none.")
}
t.Log("ErrNotFound check passed!")
// Now we test this DHT's handleGetValue failure
{
typ := pb.Message_GET_VALUE
str := "hello"
sk, err := d.getOwnPrivateKey()
if err != nil {
t.Fatal(err)
}
rec, err := record.MakePutRecord(sk, key.Key(str), []byte("blah"), true)
if err != nil {
t.Fatal(err)
}
req := pb.Message{
Type: &typ,
Key: &str,
Record: rec,
}
s, err := hosts[1].NewStream(ProtocolDHT, hosts[0].ID())
if err != nil {
t.Fatal(err)
}
defer s.Close()
pbr := ggio.NewDelimitedReader(s, inet.MessageSizeMax)
pbw := ggio.NewDelimitedWriter(s)
if err := pbw.WriteMsg(&req); err != nil {
t.Fatal(err)
}
pmes := new(pb.Message)
if err := pbr.ReadMsg(pmes); err != nil {
t.Fatal(err)
}
if pmes.GetRecord() != nil {
t.Fatal("shouldnt have value")
}
if pmes.GetProviderPeers() != nil {
t.Fatal("shouldnt have provider peers")
}
}
}
func (s *Server) handleMessage(
ctx context.Context, p peer.ID, req *dhtpb.Message) (peer.ID, *dhtpb.Message) {
defer log.EventBegin(ctx, "routingMessageReceived", req, p).Done()
var response = dhtpb.NewMessage(req.GetType(), req.GetKey(), req.GetClusterLevel())
switch req.GetType() {
case dhtpb.Message_GET_VALUE:
rawRecord, err := getRoutingRecord(s.routingBackend, key.Key(req.GetKey()))
if err != nil {
return "", nil
}
response.Record = rawRecord
return p, response
case dhtpb.Message_PUT_VALUE:
// FIXME: verify complains that the peer's ID is not present in the
// peerstore. Mocknet problem?
// if err := verify(s.peerstore, req.GetRecord()); err != nil {
// log.Event(ctx, "validationFailed", req, p)
// return "", nil
// }
putRoutingRecord(s.routingBackend, key.Key(req.GetKey()), req.GetRecord())
return p, req
case dhtpb.Message_FIND_NODE:
p := s.peerstore.PeerInfo(peer.ID(req.GetKey()))
pri := []dhtpb.PeerRoutingInfo{
{
PeerInfo: p,
// Connectedness: TODO
},
}
response.CloserPeers = dhtpb.PeerRoutingInfosToPBPeers(pri)
return p.ID, response
case dhtpb.Message_ADD_PROVIDER:
for _, provider := range req.GetProviderPeers() {
providerID := peer.ID(provider.GetId())
if providerID == p {
store := []*dhtpb.Message_Peer{provider}
storeProvidersToPeerstore(s.peerstore, p, store)
if err := putRoutingProviders(s.routingBackend, key.Key(req.GetKey()), store); err != nil {
return "", nil
}
} else {
log.Event(ctx, "addProviderBadRequest", p, req)
}
}
return "", nil
case dhtpb.Message_GET_PROVIDERS:
providers, err := getRoutingProviders(s.routingBackend, key.Key(req.GetKey()))
if err != nil {
return "", nil
}
response.ProviderPeers = providers
return p, response
case dhtpb.Message_PING:
return p, req
default:
}
return "", nil
}