func (s *simpleService) ProcessClientRequest(e *network.ServerIdentity, r *sda.ClientRequest) {
msgT, pm, err := network.UnmarshalRegisteredType(r.Data, network.DefaultConstructors(network.Suite))
log.ErrFatal(err)
if msgT != simpleRequestType {
return
}
req := pm.(simpleRequest)
tree := req.ServerIdentities.GenerateBinaryTree()
tni := s.ctx.NewTreeNodeInstance(tree, tree.Root, "BackForth")
proto, err := newBackForthProtocolRoot(tni, req.Val, func(n int) {
if err := s.ctx.SendRaw(e, &simpleResponse{
Val: n,
}); err != nil {
log.Error(err)
}
})
if err != nil {
log.Error(err)
return
}
if err := s.ctx.RegisterProtocolInstance(proto); err != nil {
log.Error(err)
}
go proto.Start()
}
// NewTreeFromMarshal takes a slice of bytes and an Roster to re-create
// the original tree
func NewTreeFromMarshal(buf []byte, el *Roster) (*Tree, error) {
tp, pm, err := network.UnmarshalRegisteredType(buf,
network.DefaultConstructors(network.Suite))
if err != nil {
return nil, err
}
if tp != TreeMarshalTypeID {
return nil, errors.New("Didn't receive TreeMarshal-struct")
}
t, err := pm.(TreeMarshal).MakeTree(el)
t.computeSubtreeAggregate(network.Suite, t.Root)
return t, err
}
// BinaryUnmarshaler takes a TreeMarshal and stores it in the tree
func (t *Tree) BinaryUnmarshaler(b []byte) error {
_, m, err := network.UnmarshalRegisteredType(b, network.DefaultConstructors(network.Suite))
tbm, ok := m.(tbmStruct)
if !ok {
return errors.New("Didn't find TBMstruct")
}
tree, err := NewTreeFromMarshal(tbm.T, tbm.EL)
if err != nil {
return err
}
t.Roster = tbm.EL
t.ID = tree.ID
t.Root = tree.Root
return nil
}
func (ds *DummyService) ProcessServiceMessage(e *network.ServerIdentity, s *sda.InterServiceMessage) {
id, m, err := network.UnmarshalRegisteredType(s.Data, network.DefaultConstructors(network.Suite))
if err != nil {
ds.link <- false
return
}
if id != dummyMsgType {
ds.link <- false
return
}
dms := m.(DummyMsg)
if dms.A != 10 {
ds.link <- false
return
}
ds.link <- true
}
func (ds *DummyService) ProcessClientRequest(e *network.ServerIdentity, r *sda.ClientRequest) {
msgT, _, err := network.UnmarshalRegisteredType(r.Data, network.DefaultConstructors(network.Suite))
if err != nil || msgT != dummyMsgType {
ds.link <- false
return
}
if ds.firstTni == nil {
ds.firstTni = ds.c.NewTreeNodeInstance(ds.fakeTree, ds.fakeTree.Root, "DummyService")
}
dp := NewDummyProtocol(ds.firstTni, ds.Config, ds.link)
if err := ds.c.RegisterProtocolInstance(dp); err != nil {
ds.link <- false
return
}
dp.Start()
}
// dispatchMsgToProtocol will dispatch this sda.Data to the right instance
func (n *TreeNodeInstance) dispatchMsgToProtocol(sdaMsg *ProtocolMsg) error {
// Decode the inner message here. In older versions, it was decoded before,
// but first there is no use to do it before, and then every protocols had
// to manually registers their messages. Since it is done automatically by
// the Node, decoding should also be done by the node.
var err error
t, msg, err := network.UnmarshalRegisteredType(sdaMsg.MsgSlice, network.DefaultConstructors(n.Suite()))
if err != nil {
log.Error(n.ServerIdentity().First(), "Error while unmarshalling inner message of SDAData", sdaMsg.MsgType, ":", err)
}
// Put the msg into SDAData
sdaMsg.MsgType = t
sdaMsg.Msg = msg
// if message comes from parent, dispatch directly
// if messages come from children we must aggregate them
// if we still need to wait for additional messages, we return
msgType, msgs, done := n.aggregate(sdaMsg)
if !done {
log.Lvl3(n.Name(), "Not done aggregating children msgs")
return nil
}
log.Lvlf5("TNI dispatching -Message is: %+v", sdaMsg.Msg)
switch {
case n.channels[msgType] != nil:
log.Lvl4(n.Info(), "Dispatching to channel")
err = n.DispatchChannel(msgs)
case n.handlers[msgType] != nil:
log.Lvl4("Dispatching to handler", n.ServerIdentity().Addresses)
err = n.dispatchHandler(msgs)
default:
return errors.New("This message-type is not handled by this protocol")
}
return err
}
// GetReply takes a clientRequest and passes it to the corresponding
// handler-function.
func (p *ServiceProcessor) GetReply(e *network.ServerIdentity, d []byte) network.Body {
mt, m, err := network.UnmarshalRegisteredType(d,
network.DefaultConstructors(network.Suite))
fu, ok := p.functions[mt]
if !ok {
return &StatusRet{"Didn't register message-handler: " + mt.String()}
}
if err != nil {
return &StatusRet{err.Error()}
}
//to0 := reflect.TypeOf(fu).In(0)
to1 := reflect.TypeOf(fu).In(1)
f := reflect.ValueOf(fu)
log.Lvl4("Dispatching to", e.Addresses)
arg0 := reflect.New(reflect.TypeOf(network.ServerIdentity{}))
arg0.Elem().Set(reflect.ValueOf(e).Elem())
arg1 := reflect.New(to1.Elem())
arg1.Elem().Set(reflect.ValueOf(m))
ret := f.Call([]reflect.Value{arg0, arg1})
errI := ret[1].Interface()
if errI != nil {
return &StatusRet{errI.(error).Error()}
}
reply := ret[0].Interface()
if reply == nil {
reply = StatusOK
}
return reply
}
// LoadSimulationConfig gets all configuration from dir + SimulationFileName and instantiates the
// corresponding host 'ha'.
func LoadSimulationConfig(dir, ha string) ([]*SimulationConfig, error) {
network.RegisterMessageType(SimulationConfigFile{})
bin, err := ioutil.ReadFile(dir + "/" + SimulationFileName)
if err != nil {
return nil, err
}
_, msg, err := network.UnmarshalRegisteredType(bin,
network.DefaultConstructors(network.Suite))
if err != nil {
return nil, err
}
scf := msg.(SimulationConfigFile)
sc := &SimulationConfig{
Roster: scf.Roster,
PrivateKeys: scf.PrivateKeys,
Config: scf.Config,
}
sc.Tree, err = scf.TreeMarshal.MakeTree(sc.Roster)
if err != nil {
return nil, err
}
var ret []*SimulationConfig
if ha != "" {
if !strings.Contains(ha, ":") {
// to correctly match hosts a column is needed, else
// 10.255.0.1 would also match 10.255.0.10 and others
ha += ":"
}
for _, e := range sc.Roster.List {
for _, a := range e.Addresses {
log.Lvl4("Searching for", ha, "in", a)
// If we are started in Deterlab- or other
// big-server-needs-multiple-hosts, we might
// want to initialise all hosts in one instance
// of 'cothority' so as to minimize memory
// footprint
if strings.Contains(a, ha) {
log.Lvl3("Found host", a, "to match", ha)
host := NewHost(e, scf.PrivateKeys[a])
scNew := *sc
scNew.Host = host
scNew.Overlay = host.overlay
ret = append(ret, &scNew)
}
}
}
if len(ret) == 0 {
return nil, errors.New("Didn't find address: " + ha)
}
} else {
ret = append(ret, sc)
}
if strings.Contains(sc.Roster.List[0].Addresses[0], "localhost") {
// Now strip all superfluous numbers of localhost
for i := range sc.Roster.List {
_, port, _ := net.SplitHostPort(sc.Roster.List[i].Addresses[0])
sc.Roster.List[i].Addresses[0] = "localhost:" + port
}
}
return ret, nil
}