func TestServiceProtocolProcessMessage(t *testing.T) {
ds := &DummyService{
link: make(chan bool),
}
var count int
sda.RegisterNewService("DummyService", func(c *sda.Context, path string) sda.Service {
if count == 0 {
count++
// the client does not need a Service
return &DummyService{link: make(chan bool)}
}
ds.c = c
ds.path = path
ds.Config = DummyConfig{
Send: true,
}
return ds
})
// fake a client
h2 := sda.NewLocalHost(2010)
defer h2.Close()
host := sda.NewLocalHost(2000)
host.ListenAndBind()
host.StartProcessMessages()
log.Lvl1("Host created and listening")
defer host.Close()
// create the entityList and tree
el := sda.NewRoster([]*network.ServerIdentity{host.ServerIdentity})
tree := el.GenerateBinaryTree()
// give it to the service
ds.fakeTree = tree
// Send a request to the service
b, err := network.MarshalRegisteredType(&DummyMsg{10})
log.ErrFatal(err)
re := &sda.ClientRequest{
Service: sda.ServiceFactory.ServiceID("DummyService"),
Data: b,
}
log.Lvl1("Client connecting to host")
if _, err := h2.Connect(host.ServerIdentity); err != nil {
t.Fatal(err)
}
log.Lvl1("Sending request to service...")
if err := h2.SendRaw(host.ServerIdentity, re); err != nil {
t.Fatal(err)
}
// wait for the link from the protocol
waitOrFatalValue(ds.link, true, t)
// now wait for the same link as the protocol should have sent a message to
// himself !
waitOrFatalValue(ds.link, true, t)
}
// CreateServiceMessage takes a service name and some data and encodes the whole
// as a ServiceMessage.
func CreateServiceMessage(service string, r interface{}) (*InterServiceMessage, error) {
sid := ServiceFactory.ServiceID(service)
buff, err := network.MarshalRegisteredType(r)
if err != nil {
return nil, err
}
return &InterServiceMessage{
Service: sid,
Data: buff,
}, nil
}
// CreateClientRequest creates a Request message out of any message that is
// destined to a Service. XXX For the moment it uses protobuf, as it is already
// handling abstract.Scalar/Public stuff that json can't do. Later we may want
// to think on how to change that.
func CreateClientRequest(service string, r interface{}) (*ClientRequest, error) {
sid := ServiceFactory.ServiceID(service)
log.Lvl1("Name", service, " <-> ServiceID", sid.String())
buff, err := network.MarshalRegisteredType(r)
if err != nil {
return nil, err
}
return &ClientRequest{
Service: sid,
Data: buff,
}, nil
}
// Test if a request that makes the service create a new protocol works
func TestServiceRequestNewProtocol(t *testing.T) {
ds := &DummyService{
link: make(chan bool),
}
sda.RegisterNewService("DummyService", func(c *sda.Context, path string) sda.Service {
ds.c = c
ds.path = path
return ds
})
host := sda.NewLocalHost(2000)
host.Listen()
host.StartProcessMessages()
log.Lvl1("Host created and listening")
defer host.Close()
// create the entityList and tree
el := sda.NewRoster([]*network.ServerIdentity{host.ServerIdentity})
tree := el.GenerateBinaryTree()
// give it to the service
ds.fakeTree = tree
// Send a request to the service
b, err := network.MarshalRegisteredType(&DummyMsg{10})
log.ErrFatal(err)
re := &sda.ClientRequest{
Service: sda.ServiceFactory.ServiceID("DummyService"),
Data: b,
}
// fake a client
h2 := sda.NewLocalHost(2010)
defer h2.Close()
log.Lvl1("Client connecting to host")
if _, err := h2.Connect(host.ServerIdentity); err != nil {
t.Fatal(err)
}
log.Lvl1("Sending request to service...")
if err := h2.SendRaw(host.ServerIdentity, re); err != nil {
t.Fatal(err)
}
// wait for the link from the
waitOrFatalValue(ds.link, true, t)
// Now RESEND the value so we instantiate using the SAME TREENODE
log.Lvl1("Sending request AGAIN to service...")
if err := h2.SendRaw(host.ServerIdentity, re); err != nil {
t.Fatal(err)
}
// wait for the link from the
// NOW expect false
waitOrFatalValue(ds.link, false, t)
}
// BinaryMarshaler does the same as Marshal
func (t *Tree) BinaryMarshaler() ([]byte, error) {
bt, err := t.Marshal()
if err != nil {
return nil, err
}
tbm := &tbmStruct{
T: bt,
EL: t.Roster,
}
b, err := network.MarshalRegisteredType(tbm)
if err != nil {
return nil, err
}
return b, nil
}
// SendTreeNode injects a message directly in the Overlay-layer, bypassing
// Host and Network
func (l *LocalTest) SendTreeNode(proto string, from, to *TreeNodeInstance, msg network.Body) error {
if from.Tree().ID != to.Tree().ID {
return errors.New("Can't send from one tree to another")
}
b, err := network.MarshalRegisteredType(msg)
if err != nil {
return err
}
sdaMsg := &ProtocolMsg{
MsgSlice: b,
MsgType: network.TypeToMessageTypeID(msg),
From: from.token,
To: to.token,
}
return to.overlay.TransmitMsg(sdaMsg)
}
// Save takes everything in the SimulationConfig structure and saves it to
// dir + SimulationFileName
func (sc *SimulationConfig) Save(dir string) error {
network.RegisterMessageType(&SimulationConfigFile{})
scf := &SimulationConfigFile{
TreeMarshal: sc.Tree.MakeTreeMarshal(),
Roster: sc.Roster,
PrivateKeys: sc.PrivateKeys,
Config: sc.Config,
}
buf, err := network.MarshalRegisteredType(scf)
if err != nil {
log.Fatal(err)
}
err = ioutil.WriteFile(dir+"/"+SimulationFileName, buf, 0660)
if err != nil {
log.Fatal(err)
}
return nil
}
// Separate function for testing
func propagateStartAndWait(pi sda.ProtocolInstance, msg network.Body, msec int, f func(network.Body)) (int, error) {
d, err := network.MarshalRegisteredType(msg)
if err != nil {
return -1, err
}
protocol := pi.(*Propagate)
protocol.Lock()
protocol.sd.Data = d
protocol.sd.Msec = msec
protocol.onData = f
done := make(chan int)
protocol.onDoneCb = func(i int) { done <- i }
protocol.Unlock()
if err = protocol.Start(); err != nil {
return -1, err
}
ret := <-done
log.Lvl2("Finished propagation with", ret, "replies")
return ret, nil
}
func TestServiceBackForthProtocol(t *testing.T) {
local := sda.NewLocalTest()
defer local.CloseAll()
// register service
sda.RegisterNewService("BackForth", func(c *sda.Context, path string) sda.Service {
return &simpleService{
ctx: c,
}
})
// create hosts
hosts, el, _ := local.GenTree(4, true, true, false)
// create client
priv, pub := sda.PrivPub()
client := network.NewSecureTCPHost(priv, network.NewServerIdentity(pub, ""))
c, err := client.Open(hosts[0].ServerIdentity)
assert.Nil(t, err)
// create request
r := &simpleRequest{
ServerIdentities: el,
Val: 10,
}
buff, err := network.MarshalRegisteredType(r)
assert.Nil(t, err)
req := &sda.ClientRequest{
Service: sda.ServiceFactory.ServiceID("BackForth"),
Data: buff,
}
assert.Nil(t, c.Send(context.TODO(), req))
nm, err := c.Receive(context.TODO())
assert.Nil(t, err)
assert.Equal(t, nm.MsgType, simpleResponseType)
resp := nm.Msg.(simpleResponse)
assert.Equal(t, resp.Val, 10)
}
// sendSDAData marshals the inner msg and then sends a Data msg
// to the appropriate entity
func (h *Host) sendSDAData(e *network.ServerIdentity, sdaMsg *ProtocolMsg) error {
b, err := network.MarshalRegisteredType(sdaMsg.Msg)
if err != nil {
typ := network.TypeFromData(sdaMsg.Msg)
rtype := reflect.TypeOf(sdaMsg.Msg)
var str string
if typ == network.ErrorType {
str = " Non registered Type !"
} else {
str = typ.String()
}
str += " (reflect= " + rtype.String()
return fmt.Errorf("Error marshaling message: %s ( msg = %+v)", err.Error(), sdaMsg.Msg)
}
sdaMsg.MsgSlice = b
sdaMsg.MsgType = network.TypeFromData(sdaMsg.Msg)
// put to nil so protobuf won't encode it and there won't be any error on the
// other side (because it doesn't know how to decode it)
sdaMsg.Msg = nil
log.Lvl4("Sending to", e.Addresses)
return h.SendRaw(e, sdaMsg)
}
// Marshal creates a simple binary-representation of the tree containing only
// the ids of the elements. Use NewTreeFromMarshal to get back the original
// tree
func (t *Tree) Marshal() ([]byte, error) {
buf, err := network.MarshalRegisteredType(t.MakeTreeMarshal())
return buf, err
}
// test for calling the NewProtocol method on a remote Service
func TestServiceNewProtocol(t *testing.T) {
ds1 := &DummyService{
link: make(chan bool),
Config: DummyConfig{
Send: true,
},
}
ds2 := &DummyService{
link: make(chan bool),
}
var count int
sda.RegisterNewService("DummyService", func(c *sda.Context, path string) sda.Service {
var localDs *DummyService
switch count {
case 2:
// the client does not need a Service
return &DummyService{link: make(chan bool)}
case 1: // children
localDs = ds2
case 0: // root
localDs = ds1
}
localDs.c = c
localDs.path = path
count++
return localDs
})
host := sda.NewLocalHost(2000)
host.ListenAndBind()
host.StartProcessMessages()
log.Lvl1("Host created and listening")
defer host.Close()
host2 := sda.NewLocalHost(2002)
host2.ListenAndBind()
host2.StartProcessMessages()
defer host2.Close()
// create the entityList and tree
el := sda.NewRoster([]*network.ServerIdentity{host.ServerIdentity, host2.ServerIdentity})
tree := el.GenerateBinaryTree()
// give it to the service
ds1.fakeTree = tree
// Send a request to the service
b, err := network.MarshalRegisteredType(&DummyMsg{10})
log.ErrFatal(err)
re := &sda.ClientRequest{
Service: sda.ServiceFactory.ServiceID("DummyService"),
Data: b,
}
// fake a client
client := sda.NewLocalHost(2010)
defer client.Close()
log.Lvl1("Client connecting to host")
if _, err := client.Connect(host.ServerIdentity); err != nil {
t.Fatal(err)
}
log.Lvl1("Sending request to service...")
if err := client.SendRaw(host.ServerIdentity, re); err != nil {
t.Fatal(err)
}
// wait for the link from the protocol that Starts
waitOrFatalValue(ds1.link, true, t)
// now wait for the same link as the protocol should have sent a message to
// himself !
waitOrFatalValue(ds1.link, true, t)
// now wait for the SECOND LINK on the SECOND HOST that the SECOND SERVICE
// should have started (ds2) in ProcessRequest
waitOrFatalValue(ds2.link, true, t)
}
func mkClientRequest(msg network.Body) []byte {
b, err := network.MarshalRegisteredType(msg)
log.ErrFatal(err)
return b
}