// NewChaincodeHandler returns a new instance of the shim side handler.
func newChaincodeHandler(peerChatStream PeerChaincodeStream, chaincode Chaincode) *Handler {
v := &Handler{
ChatStream: peerChatStream,
cc: chaincode,
}
v.responseChannel = make(map[string]chan pb.ChaincodeMessage)
v.nextState = make(chan *nextStateInfo)
// Create the shim side FSM
v.FSM = fsm.NewFSM(
"created",
fsm.Events{
{Name: pb.ChaincodeMessage_REGISTERED.String(), Src: []string{"created"}, Dst: "established"},
{Name: pb.ChaincodeMessage_INIT.String(), Src: []string{"established"}, Dst: "init"},
{Name: pb.ChaincodeMessage_READY.String(), Src: []string{"established"}, Dst: "ready"},
{Name: pb.ChaincodeMessage_ERROR.String(), Src: []string{"init"}, Dst: "established"},
{Name: pb.ChaincodeMessage_RESPONSE.String(), Src: []string{"init"}, Dst: "init"},
{Name: pb.ChaincodeMessage_COMPLETED.String(), Src: []string{"init"}, Dst: "ready"},
{Name: pb.ChaincodeMessage_TRANSACTION.String(), Src: []string{"ready"}, Dst: "transaction"},
{Name: pb.ChaincodeMessage_COMPLETED.String(), Src: []string{"transaction"}, Dst: "ready"},
{Name: pb.ChaincodeMessage_ERROR.String(), Src: []string{"transaction"}, Dst: "ready"},
{Name: pb.ChaincodeMessage_RESPONSE.String(), Src: []string{"transaction"}, Dst: "transaction"},
{Name: pb.ChaincodeMessage_RESPONSE.String(), Src: []string{"ready"}, Dst: "ready"},
},
fsm.Callbacks{
"before_" + pb.ChaincodeMessage_REGISTERED.String(): func(e *fsm.Event) { v.beforeRegistered(e) },
"after_" + pb.ChaincodeMessage_RESPONSE.String(): func(e *fsm.Event) { v.afterResponse(e) },
"after_" + pb.ChaincodeMessage_ERROR.String(): func(e *fsm.Event) { v.afterError(e) },
"enter_init": func(e *fsm.Event) { v.enterInitState(e) },
"enter_transaction": func(e *fsm.Event) { v.enterTransactionState(e) },
},
)
return v
}
// Create and return a new Node. channels for sending and receiving messages are setup.
// And two goroutines are spawned Send and Receive to handle incoming and outgoing messages.
func NewNode(conn net.Conn) *Node {
n := new(Node)
n.Client = NewClient(conn)
n.ID = uuid.NewRandom()
n.Name = n.ID.String()
n.State = UNKNOWN
n.fsm = fsm.NewFSM(
n.State.S(),
fsm.Events{
{Name: "offline", Src: StateList(ONLINE, READY, ASSIGNING, WORKING), Dst: OFFLINE.S()},
{Name: "online", Src: StateList(UNKNOWN, READY, OFFLINE), Dst: ONLINE.S()},
{Name: "ready", Src: StateList(ONLINE, WORKING, ASSIGNING), Dst: READY.S()},
{Name: "assign", Src: StateList(READY), Dst: ASSIGNING.S()},
{Name: "work", Src: StateList(ASSIGNING), Dst: WORKING.S()},
{Name: "service", Src: StateList(UNKNOWN, ONLINE, OFFLINE), Dst: SERVICE.S()},
},
fsm.Callbacks{
"after_event": func(e *fsm.Event) { n.afterEvent(e) },
"before_offline": func(e *fsm.Event) { n.beforeOffline(e) },
OFFLINE.S(): func(e *fsm.Event) { n.offlineNode(e) },
},
)
n.Send = make(chan *proto_msg.KamajiMessage)
n.Receive = make(chan *proto_msg.KamajiMessage)
n.done = make(chan bool)
n.waitGroup = &sync.WaitGroup{}
if n.Conn != nil {
go n.messageTransmitter()
go n.messageReciever()
}
return n
}
// Create a new Command instance and return it.
func NewCommand(name string, task *Task) *Command {
c := new(Command)
c.ID = uuid.NewRandom()
c.Name = name
c.State = UNKNOWN
c.Completion = 0.0
c.created = time.Now()
c.priority = 0
c.Task = task
if task != nil {
task.Commands = append(task.Commands, c)
}
c.FSM = fsm.NewFSM(
c.State.S(),
fsm.Events{
{Name: "ready", Src: StateList(UNKNOWN, STOPPED, ASSIGNING), Dst: READY.S()},
{Name: "assign", Src: StateList(READY), Dst: ASSIGNING.S()},
{Name: "start", Src: StateList(UNKNOWN, READY, ASSIGNING, STOPPED), Dst: WORKING.S()},
{Name: "restart", Src: StateList(DONE), Dst: WORKING.S()},
{Name: "finish", Src: StateList(WORKING), Dst: DONE.S()},
{Name: "stop", Src: StateList(WORKING), Dst: STOPPED.S()},
},
fsm.Callbacks{
"after_event": func(e *fsm.Event) { c.afterEvent(e) },
DONE.S(): func(e *fsm.Event) { c.finishCommand(e) },
},
)
return c
}
func (self *Core) Start() {
mlog.Info("starting core service ...")
events := []fsm.EventDesc{
{Name: "import", Src: []string{"idle", "scanning"}, Dst: "scanning"},
{Name: "found", Src: []string{"scanning"}, Dst: "scanning"},
{Name: "scraped", Src: []string{"scanning"}, Dst: "scanning"},
{Name: "status", Src: []string{"idle", "scanning"}, Dst: "scanning"},
{Name: "finish", Src: []string{"scanning"}, Dst: "idle"},
}
// some initialization
self.fsm = fsm.NewFSM(
"idle",
events,
fsm.Callbacks{
"import": self.importer,
"found": self.found,
"scraped": self.scraped,
"finish": self.finish,
},
)
self.context = message.Context{Message: "Idle", Backdrop: "/mAwd34SAC8KqBKRm2MwHPLhLDU5.jpg", Completed: false}
go self.react()
mlog.Info("core service started")
}
func main() {
fsm := fsm.NewFSM(
"closed",
fsm.Events{
{Name: "open", Src: []string{"closed"}, Dst: "open"},
{Name: "close", Src: []string{"open"}, Dst: "closed"},
},
fsm.Callbacks{},
)
fmt.Println(fsm.Current())
err := fsm.Event("open")
if err != nil {
fmt.Println(err)
}
fmt.Println(fsm.Current())
err = fsm.Event("close")
if err != nil {
fmt.Println(err)
}
fmt.Println(fsm.Current())
}
// NewPeerConnectionFSM creates and returns a PeerConnectionFSM
func NewPeerConnectionFSM(to string) *PeerConnectionFSM {
d := &PeerConnectionFSM{
To: to,
}
d.FSM = fsm.NewFSM(
"created",
fsm.Events{
{Name: "HELLO", Src: []string{"created"}, Dst: "established"},
{Name: "GET_PEERS", Src: []string{"established"}, Dst: "established"},
{Name: "PEERS", Src: []string{"established"}, Dst: "established"},
{Name: "PING", Src: []string{"established"}, Dst: "established"},
{Name: "DISCONNECT", Src: []string{"created", "established"}, Dst: "closed"},
},
fsm.Callbacks{
"enter_state": func(e *fsm.Event) { d.enterState(e) },
"before_HELLO": func(e *fsm.Event) { d.beforeHello(e) },
"after_HELLO": func(e *fsm.Event) { d.afterHello(e) },
"before_PING": func(e *fsm.Event) { d.beforePing(e) },
"after_PING": func(e *fsm.Event) { d.afterPing(e) },
},
)
return d
}
func NewManager(_myId string, _members []string) *Manager {
self := &Manager{
myId: _myId,
members: _members,
votes: make(Votes),
threshold: util.ComputeQuorumThreshold(len(_members)),
C: make(chan bool, 100),
}
self.state = fsm.NewFSM(
"idle",
fsm.Events{
{Name: "quorum", Src: []string{"idle", "elected"}, Dst: "electing"},
{Name: "complete", Src: []string{"electing"}, Dst: "elected"},
{Name: "next", Src: []string{"elected"}, Dst: "idle"},
},
fsm.Callbacks{
"electing": func(e *fsm.Event) { self.onElecting() },
"enter_elected": func(e *fsm.Event) { self.onElected(e.Args[0].(string), e.Args[1].(int64)) },
"leave_elected": func(e *fsm.Event) { self.view++ },
},
)
fmt.Printf("EM: Initializing with %d members and a quorum threshold %d\n", len(self.members), self.threshold)
return self
}
func newChaincodeSupportHandler(chaincodeSupport *ChaincodeSupport, peerChatStream PeerChaincodeStream) *Handler {
v := &Handler{
ChatStream: peerChatStream,
}
v.chaincodeSupport = chaincodeSupport
//we want this to block
v.nextState = make(chan *nextStateInfo)
v.FSM = fsm.NewFSM(
createdstate,
fsm.Events{
//Send REGISTERED, then, if deploy { trigger INIT(via INIT) } else { trigger READY(via COMPLETED) }
{Name: pb.ChaincodeMessage_REGISTER.String(), Src: []string{createdstate}, Dst: establishedstate},
{Name: pb.ChaincodeMessage_INIT.String(), Src: []string{establishedstate}, Dst: initstate},
{Name: pb.ChaincodeMessage_READY.String(), Src: []string{establishedstate}, Dst: readystate},
{Name: pb.ChaincodeMessage_TRANSACTION.String(), Src: []string{readystate}, Dst: transactionstate},
{Name: pb.ChaincodeMessage_PUT_STATE.String(), Src: []string{transactionstate}, Dst: busyxactstate},
{Name: pb.ChaincodeMessage_DEL_STATE.String(), Src: []string{transactionstate}, Dst: busyxactstate},
{Name: pb.ChaincodeMessage_INVOKE_CHAINCODE.String(), Src: []string{transactionstate}, Dst: busyxactstate},
{Name: pb.ChaincodeMessage_PUT_STATE.String(), Src: []string{initstate}, Dst: busyinitstate},
{Name: pb.ChaincodeMessage_DEL_STATE.String(), Src: []string{initstate}, Dst: busyinitstate},
{Name: pb.ChaincodeMessage_INVOKE_CHAINCODE.String(), Src: []string{initstate}, Dst: busyinitstate},
{Name: pb.ChaincodeMessage_COMPLETED.String(), Src: []string{initstate, readystate, transactionstate}, Dst: readystate},
{Name: pb.ChaincodeMessage_GET_STATE.String(), Src: []string{readystate}, Dst: readystate},
{Name: pb.ChaincodeMessage_GET_STATE.String(), Src: []string{initstate}, Dst: initstate},
{Name: pb.ChaincodeMessage_GET_STATE.String(), Src: []string{busyinitstate}, Dst: busyinitstate},
{Name: pb.ChaincodeMessage_GET_STATE.String(), Src: []string{transactionstate}, Dst: transactionstate},
{Name: pb.ChaincodeMessage_GET_STATE.String(), Src: []string{busyxactstate}, Dst: busyxactstate},
{Name: pb.ChaincodeMessage_RANGE_QUERY_STATE.String(), Src: []string{readystate}, Dst: readystate},
{Name: pb.ChaincodeMessage_RANGE_QUERY_STATE.String(), Src: []string{initstate}, Dst: initstate},
{Name: pb.ChaincodeMessage_RANGE_QUERY_STATE.String(), Src: []string{busyinitstate}, Dst: busyinitstate},
{Name: pb.ChaincodeMessage_RANGE_QUERY_STATE.String(), Src: []string{transactionstate}, Dst: transactionstate},
{Name: pb.ChaincodeMessage_RANGE_QUERY_STATE.String(), Src: []string{busyxactstate}, Dst: busyxactstate},
{Name: pb.ChaincodeMessage_ERROR.String(), Src: []string{initstate}, Dst: endstate},
{Name: pb.ChaincodeMessage_ERROR.String(), Src: []string{transactionstate}, Dst: readystate},
{Name: pb.ChaincodeMessage_ERROR.String(), Src: []string{busyinitstate}, Dst: initstate},
{Name: pb.ChaincodeMessage_ERROR.String(), Src: []string{busyxactstate}, Dst: transactionstate},
{Name: pb.ChaincodeMessage_RESPONSE.String(), Src: []string{busyinitstate}, Dst: initstate},
{Name: pb.ChaincodeMessage_RESPONSE.String(), Src: []string{busyxactstate}, Dst: transactionstate},
},
fsm.Callbacks{
"before_" + pb.ChaincodeMessage_REGISTER.String(): func(e *fsm.Event) { v.beforeRegisterEvent(e, v.FSM.Current()) },
"before_" + pb.ChaincodeMessage_COMPLETED.String(): func(e *fsm.Event) { v.beforeCompletedEvent(e, v.FSM.Current()) },
"before_" + pb.ChaincodeMessage_INIT.String(): func(e *fsm.Event) { v.beforeInitState(e, v.FSM.Current()) },
"after_" + pb.ChaincodeMessage_GET_STATE.String(): func(e *fsm.Event) { v.afterGetState(e, v.FSM.Current()) },
"after_" + pb.ChaincodeMessage_RANGE_QUERY_STATE.String(): func(e *fsm.Event) { v.afterRangeQueryState(e, v.FSM.Current()) },
"after_" + pb.ChaincodeMessage_PUT_STATE.String(): func(e *fsm.Event) { v.afterPutState(e, v.FSM.Current()) },
"after_" + pb.ChaincodeMessage_DEL_STATE.String(): func(e *fsm.Event) { v.afterDelState(e, v.FSM.Current()) },
"after_" + pb.ChaincodeMessage_INVOKE_CHAINCODE.String(): func(e *fsm.Event) { v.afterInvokeChaincode(e, v.FSM.Current()) },
"enter_" + establishedstate: func(e *fsm.Event) { v.enterEstablishedState(e, v.FSM.Current()) },
"enter_" + initstate: func(e *fsm.Event) { v.enterInitState(e, v.FSM.Current()) },
"enter_" + readystate: func(e *fsm.Event) { v.enterReadyState(e, v.FSM.Current()) },
"enter_" + busyinitstate: func(e *fsm.Event) { v.enterBusyState(e, v.FSM.Current()) },
"enter_" + busyxactstate: func(e *fsm.Event) { v.enterBusyState(e, v.FSM.Current()) },
"enter_" + endstate: func(e *fsm.Event) { v.enterEndState(e, v.FSM.Current()) },
},
)
return v
}
func main() {
fsm := fsm.NewFSM(
"idle",
fsm.Events{
{Name: "scan", Src: []string{"idle"}, Dst: "scanning"},
{Name: "working", Src: []string{"scanning"}, Dst: "scanning"},
{Name: "situation", Src: []string{"scanning"}, Dst: "scanning"},
{Name: "situation", Src: []string{"idle"}, Dst: "idle"},
{Name: "finish", Src: []string{"scanning"}, Dst: "idle"},
},
fsm.Callbacks{
"scan": func(e *fsm.Event) {
fmt.Println("after_scan: " + e.FSM.Current())
},
"working": func(e *fsm.Event) {
fmt.Println("working: " + e.FSM.Current())
},
"situation": func(e *fsm.Event) {
fmt.Println("situation: " + e.FSM.Current())
},
"finish": func(e *fsm.Event) {
fmt.Println("finish: " + e.FSM.Current())
},
},
)
fmt.Println(fsm.Current())
err := fsm.Event("scan")
if err != nil {
fmt.Println(err)
}
fmt.Println("1:" + fsm.Current())
err = fsm.Event("working")
if err != nil {
fmt.Println(err)
}
fmt.Println("2:" + fsm.Current())
err = fsm.Event("situation")
if err != nil {
fmt.Println(err)
}
fmt.Println("3:" + fsm.Current())
err = fsm.Event("finish")
if err != nil {
fmt.Println(err)
}
fmt.Println("4:" + fsm.Current())
}
// NewPeerHandler returns a new Peer handler
// Is instance of HandlerFactory
func NewPeerHandler(coord MessageHandlerCoordinator, stream ChatStream, initiatedStream bool, nextHandler MessageHandler) (MessageHandler, error) {
d := &Handler{
ChatStream: stream,
initiatedStream: initiatedStream,
Coordinator: coord,
}
d.doneChan = make(chan struct{})
d.snapshotRequestHandler = newSyncStateSnapshotRequestHandler()
d.syncStateDeltasRequestHandler = newSyncStateDeltasHandler()
d.syncBlocksRequestHandler = newSyncBlocksRequestHandler()
d.FSM = fsm.NewFSM(
"created",
fsm.Events{
{Name: pb.Message_DISC_HELLO.String(), Src: []string{"created"}, Dst: "established"},
{Name: pb.Message_DISC_GET_PEERS.String(), Src: []string{"established"}, Dst: "established"},
{Name: pb.Message_DISC_PEERS.String(), Src: []string{"established"}, Dst: "established"},
{Name: pb.Message_SYNC_BLOCK_ADDED.String(), Src: []string{"established"}, Dst: "established"},
{Name: pb.Message_SYNC_GET_BLOCKS.String(), Src: []string{"established"}, Dst: "established"},
{Name: pb.Message_SYNC_BLOCKS.String(), Src: []string{"established"}, Dst: "established"},
{Name: pb.Message_SYNC_STATE_GET_SNAPSHOT.String(), Src: []string{"established"}, Dst: "established"},
{Name: pb.Message_SYNC_STATE_SNAPSHOT.String(), Src: []string{"established"}, Dst: "established"},
{Name: pb.Message_SYNC_STATE_GET_DELTAS.String(), Src: []string{"established"}, Dst: "established"},
{Name: pb.Message_SYNC_STATE_DELTAS.String(), Src: []string{"established"}, Dst: "established"},
},
fsm.Callbacks{
"enter_state": func(e *fsm.Event) { d.enterState(e) },
"before_" + pb.Message_DISC_HELLO.String(): func(e *fsm.Event) { d.beforeHello(e) },
"before_" + pb.Message_DISC_GET_PEERS.String(): func(e *fsm.Event) { d.beforeGetPeers(e) },
"before_" + pb.Message_DISC_PEERS.String(): func(e *fsm.Event) { d.beforePeers(e) },
"before_" + pb.Message_SYNC_BLOCK_ADDED.String(): func(e *fsm.Event) { d.beforeBlockAdded(e) },
"before_" + pb.Message_SYNC_GET_BLOCKS.String(): func(e *fsm.Event) { d.beforeSyncGetBlocks(e) },
"before_" + pb.Message_SYNC_BLOCKS.String(): func(e *fsm.Event) { d.beforeSyncBlocks(e) },
"before_" + pb.Message_SYNC_STATE_GET_SNAPSHOT.String(): func(e *fsm.Event) { d.beforeSyncStateGetSnapshot(e) },
"before_" + pb.Message_SYNC_STATE_SNAPSHOT.String(): func(e *fsm.Event) { d.beforeSyncStateSnapshot(e) },
"before_" + pb.Message_SYNC_STATE_GET_DELTAS.String(): func(e *fsm.Event) { d.beforeSyncStateGetDeltas(e) },
"before_" + pb.Message_SYNC_STATE_DELTAS.String(): func(e *fsm.Event) { d.beforeSyncStateDeltas(e) },
},
)
// If the stream was initiated from this Peer, send an Initial HELLO message
if d.initiatedStream {
// Send intiial Hello
helloMessage, err := d.Coordinator.NewOpenchainDiscoveryHello()
if err != nil {
return nil, fmt.Errorf("Error getting new HelloMessage: %s", err)
}
if err := d.SendMessage(helloMessage); err != nil {
return nil, fmt.Errorf("Error creating new Peer Handler, error returned sending %s: %s", pb.Message_DISC_HELLO, err)
}
}
return d, nil
}
func NewController(_id string, _peers IdentityMap, _connMgr *ConnectionManager) *Controller {
var members []string
for _, peer := range _peers {
members = append(members, peer.Id)
}
self := &Controller{
peers: _peers,
connMgr: _connMgr,
myId: _id,
activePeers: make(map[string]*Peer),
quorumThreshold: util.ComputeQuorumThreshold(len(_peers)) - 1, // We don't include ourselves
timer: time.NewTimer(0),
pulse: time.NewTicker(1),
electionManager: election.NewManager(_id, members),
minTmo: 500,
maxTmo: 1000,
}
<-self.timer.C // drain the initial event
self.pulse.Stop()
<-self.pulse.C // drain the initial event
self.state = fsm.NewFSM(
"convening",
fsm.Events{
{Name: "quorum", Src: []string{"convening"}, Dst: "initializing"},
{Name: "quorum-lost", Src: []string{"initializing", "electing", "electing-restart", "following", "leading"}, Dst: "convening"},
{Name: "elected-self", Src: []string{"initializing", "electing"}, Dst: "leading"},
{Name: "elected-other", Src: []string{"initializing", "electing"}, Dst: "following"},
{Name: "timeout", Src: []string{"initializing", "following", "electing"}, Dst: "electing"},
{Name: "election", Src: []string{"following", "leading"}, Dst: "electing"},
{Name: "heartbeat", Src: []string{"following"}, Dst: "following"},
},
fsm.Callbacks{
"convening": func(e *fsm.Event) { self.onConvening() },
"enter_initializing": func(e *fsm.Event) { self.onInitializing() },
"leave_initializing": func(e *fsm.Event) { self.timer.Stop() },
"enter_following": func(e *fsm.Event) { self.onEnterFollowing() },
"leave_following": func(e *fsm.Event) { self.onLeaveFollowing() },
"enter_electing": func(e *fsm.Event) { self.onElecting() },
"leave_electing": func(e *fsm.Event) { self.timer.Stop() },
"enter_leading": func(e *fsm.Event) { self.onEnterLeading() },
"leave_leading": func(e *fsm.Event) { self.onLeaveLeading() },
"heartbeat": func(e *fsm.Event) { self.onHeartBeat(e.Args[0].(string), e.Args[1].(int64)) },
"before_timeout": func(e *fsm.Event) { self.onTimeout() },
},
)
return self
}
func NewDoor(to string) *Door {
d := &Door{
To: to,
}
d.FSM = fsm.NewFSM(
"closed",
fsm.Events{
{Name: "open", Src: []string{"closed"}, Dst: "open"},
{Name: "close", Src: []string{"open"}, Dst: "closed"},
},
fsm.Callbacks{
"enter_state": func(e *fsm.Event) { d.enterState(e) },
},
)
return d
}
// NewChaincodeHandler returns a new instance of the shim side handler.
func newChaincodeHandler(to string, peerChatStream PeerChaincodeStream, chaincode Chaincode) *Handler {
v := &Handler{
To: to,
ChatStream: peerChatStream,
cc: chaincode,
}
v.responseChannel = make(map[string]chan pb.ChaincodeMessage)
v.isTransaction = make(map[string]bool)
// Create the shim side FSM
v.FSM = fsm.NewFSM(
"created",
fsm.Events{
{Name: pb.ChaincodeMessage_REGISTERED.String(), Src: []string{"created"}, Dst: "established"},
{Name: pb.ChaincodeMessage_INIT.String(), Src: []string{"established"}, Dst: "init"},
{Name: pb.ChaincodeMessage_READY.String(), Src: []string{"established"}, Dst: "ready"},
{Name: pb.ChaincodeMessage_ERROR.String(), Src: []string{"init"}, Dst: "established"},
{Name: pb.ChaincodeMessage_RESPONSE.String(), Src: []string{"init"}, Dst: "init"},
{Name: pb.ChaincodeMessage_COMPLETED.String(), Src: []string{"init"}, Dst: "ready"},
{Name: pb.ChaincodeMessage_TRANSACTION.String(), Src: []string{"ready"}, Dst: "transaction"},
{Name: pb.ChaincodeMessage_COMPLETED.String(), Src: []string{"transaction"}, Dst: "ready"},
{Name: pb.ChaincodeMessage_ERROR.String(), Src: []string{"transaction"}, Dst: "ready"},
{Name: pb.ChaincodeMessage_RESPONSE.String(), Src: []string{"transaction"}, Dst: "transaction"},
{Name: pb.ChaincodeMessage_QUERY.String(), Src: []string{"transaction"}, Dst: "transaction"},
{Name: pb.ChaincodeMessage_QUERY.String(), Src: []string{"ready"}, Dst: "ready"},
{Name: pb.ChaincodeMessage_RESPONSE.String(), Src: []string{"ready"}, Dst: "ready"},
},
fsm.Callbacks{
"before_" + pb.ChaincodeMessage_REGISTERED.String(): func(e *fsm.Event) { v.beforeRegistered(e) },
//"after_" + pb.ChaincodeMessage_INIT.String(): func(e *fsm.Event) { v.beforeInit(e) },
//"after_" + pb.ChaincodeMessage_TRANSACTION.String(): func(e *fsm.Event) { v.beforeTransaction(e) },
"after_" + pb.ChaincodeMessage_RESPONSE.String(): func(e *fsm.Event) { v.afterResponse(e) },
"after_" + pb.ChaincodeMessage_ERROR.String(): func(e *fsm.Event) { v.afterError(e) },
"enter_init": func(e *fsm.Event) { v.enterInitState(e) },
"enter_transaction": func(e *fsm.Event) { v.enterTransactionState(e) },
//"enter_ready": func(e *fsm.Event) { v.enterReadyState(e) },
"after_" + pb.ChaincodeMessage_COMPLETED.String(): func(e *fsm.Event) { v.afterCompleted(e) },
"before_" + pb.ChaincodeMessage_QUERY.String(): func(e *fsm.Event) { v.beforeQuery(e) }, //only checks for QUERY
},
)
return v
}
func NewConnection(conn *net.UDPConn, raddr *net.UDPAddr, local, remote *CryptoState) *Connection {
if remote == nil {
remote = NewCryptoState(new(KeyPair), nil, false)
}
if local == nil {
panic("local is nil, fixme")
return nil
}
c := &Connection{
conn: conn,
raddr: raddr,
isEstablished: false,
local: local,
remote: remote,
rand: rand.Reader,
}
c.state = fsm.NewFSM("Reset", serverEvents, c.serverEventCallbacks())
return c
}
// NewJob create a new Job struct, generates a uuid for it and returns the job.
func NewJob(name string) *Job {
j := new(Job)
j.ID = uuid.NewRandom()
j.Name = name
j.State = UNKNOWN
j.Completion = 0.0
j.Children = []*Task{}
j.created = time.Now()
j.priority = 0
j.FSM = fsm.NewFSM(
j.State.String(),
fsm.Events{
{Name: "ready", Src: StateList(UNKNOWN, STOPPED), Dst: READY.S()},
{Name: "start", Src: StateList(READY), Dst: WORKING.S()},
{Name: "finish", Src: StateList(WORKING), Dst: DONE.S()},
{Name: "restart", Src: StateList(DONE), Dst: WORKING.S()},
{Name: "stop", Src: StateList(WORKING), Dst: STOPPED.S()},
},
fsm.Callbacks{
"after_event": func(e *fsm.Event) { j.afterEvent(e) },
},
)
return j
}
func GetNextState(currentState, event string) (string, []string) {
initialState := currentState
notProceedingEvents := map[string]bool{
"NotInterested": true,
"ClosedLost": true,
"SWJobCancelled": true,
"Unresponsive": true,
}
disqualifiedEvent := map[string]bool{
"Disqualified": true,
"Insufficient Credit": true,
"Non-ownership": true,
}
if notProceedingEvents[event] {
initialState = "NotProceeding"
} else if disqualifiedEvent[event] {
initialState = "Disqualified"
}
fsm := fsm.NewFSM(
initialState,
fsm.Events{
{
Name: "OutboundTask",
Src: []string{state["Attempting-Contact:Open"]},
Dst: state["Attempting-Contact:Contacted"],
}, {
Name: "RequiredDealFieldsFilled",
Src: []string{state["Attempting-Contact:Open"], state["Attempting-Contact:Contacted"]},
Dst: state["Qualification:DealInfoVerified"],
}, {
Name: "ConsultationScheduled",
Src: []string{state["Qualification:DealInfoVerified"]},
Dst: state["Qualification:ConsultationScheduled"],
}, {
Name: "DealUsageNotNull",
Src: []string{state["Attempting-Contact:Contacted"], state["Qualification:DealInfoVerified"]},
Dst: state["Consultation:UtilityUsageCollected"],
}, {
Name: "DealUsageNotNull",
Src: []string{state["Qualification:ConsultationScheduled"]},
Dst: state["Consultation:UtilityUsageCollected"],
}, {
Name: "CreditPassed",
Src: []string{state["Qualification:ConsultationScheduled"]},
Dst: state["Consultation:CreditPassed"],
}, {
Name: "CreditPassed",
Src: []string{state["Consultation:UtilityUsageCollected"], state["Consultation:InitialSysDesign"], state["Consultation:ProposalPresented"]},
Dst: state["Consultation:CreditPassed"],
}, {
Name: "DesignGenerated",
Src: []string{state["Qualification:ConsultationScheduled"], state["Consultation:UtilityUsageCollected"], state["Consultation:CreditPassed"]},
Dst: state["Consultation:InitialSysDesign"],
}, {
Name: "PresentationOpened",
Src: []string{state["Consultation:CreditPassed"], state["Consultation:InitialSysDesign"]},
Dst: state["Consultation:Presented"],
}, {
Name: "IntialContractSigned",
Src: []string{state["Consultation:CreditPassed"], state["Consultation:Presented"]},
Dst: state["Consultation:ContractSigned"],
},
},
fsm.Callbacks{
"before_IntialContractSigned": func(e *fsm.Event) {
},
"onNotProceeding": func(e *fsm.Event) {
fmt.Printf("After Not Proceeding")
},
"outbound": func(e *fsm.Event) {
fmt.Println("after_scan: " + e.FSM.Current())
},
"working": func(e *fsm.Event) {
fmt.Println("working: " + e.FSM.Current())
},
"situation": func(e *fsm.Event) {
fmt.Println("situation: " + e.FSM.Current())
},
"finish": func(e *fsm.Event) {
fmt.Println("finish: " + e.FSM.Current())
},
"onenterstate": func(e *fsm.Event) {
fmt.Println("In All states: " + e.FSM.Current())
},
},
)
fsm.Event(event)
var possibleEvents []string
for k, _ := range state {
if fsm.Can(k) {
possibleEvents = append(possibleEvents, k)
}
}
return fsm.Current(), possibleEvents
}
// Decode decodes the input reader into the config pointer
func (d *Decoder) Decode(config *Config) error {
tokenBuffer := ""
expressionBuffer := ""
conditionalNesting := 0
errChan := make(chan error)
conditionName := ""
var lastOp Operation = nil
parserState := fsm.NewFSM(
"section",
fsm.Events{
{Name: "input", Src: []string{"section"}, Dst: "section_start"},
{Name: "output", Src: []string{"section"}, Dst: "section_start"},
{Name: "filter", Src: []string{"section"}, Dst: "section_start"},
{Name: "{", Src: []string{"section_start"}, Dst: "entity"},
{Name: "}", Src: []string{"entity"}, Dst: "section"},
{Name: "if", Src: []string{"entity"}, Dst: "cond_start"},
{Name: "else", Src: []string{"entity"}, Dst: "cond_start"},
{Name: "{", Src: []string{"cond_start"}, Dst: "entity"},
{Name: "driver", Src: []string{"entity"}, Dst: "entity_start"},
{Name: "{", Src: []string{"entity_start"}, Dst: "driver"},
{Name: "}", Src: []string{"driver"}, Dst: "entity"},
{Name: "key", Src: []string{"driver"}, Dst: "key_start"},
{Name: "=>", Src: []string{"key_start"}, Dst: "value"},
{Name: "val", Src: []string{"value"}, Dst: "driver"},
},
fsm.Callbacks{
"leave_cond_start": func(e *fsm.Event) {
conditionalNesting++
},
"leave_entity": func(e *fsm.Event) {
if e.Dst == "section" {
if conditionalNesting != 0 {
conditionalNesting--
e.Cancel()
}
}
if lastOp != nil && e.Event == "}" {
lastOp = lastOp.Parent()
}
},
"leave_driver": func(e *fsm.Event) {
if lastOp != nil && e.Event == "}" {
lastOp = lastOp.Parent()
}
},
"enter_section": func(e *fsm.Event) {
if conditionalNesting != 0 {
errChan <- fmt.Errorf("Empty if/else branch")
}
},
"enter_cond_start": func(e *fsm.Event) {
conditionName = e.Event
},
},
)
var buffer []byte = make([]byte, 2)
var err error
var n int
var lastKey string = ""
r := d.reader
for n, err = r.Read(buffer); err == nil && n > 0; n, err = r.Read(buffer) {
for i := 0; i < n; i++ {
runeValue, width := utf8.DecodeRuneInString(string(buffer[i:]))
if (parserState.Current() != "value" && unicode.IsSpace(runeValue)) || (parserState.Current() == "value" && (uint32(runeValue) == '\n')) {
if tokenBuffer != "" {
if strings.HasPrefix(parserState.Current(), "section") {
if parserState.Can(tokenBuffer) {
parserState.Event(tokenBuffer)
} else {
return fmt.Errorf("Unexpected Token %s", tokenBuffer)
}
if tokenBuffer != "}" && tokenBuffer != "{" {
if tokenBuffer == "input" {
config.Input = NewSection(lastOp, "input")
lastOp = config.Input
} else if tokenBuffer == "output" {
config.Output = NewSection(lastOp, "output")
lastOp = config.Output
} else if tokenBuffer == "filter" {
config.Filter = NewSection(lastOp, "filter")
lastOp = config.Filter
}
}
} else if strings.HasPrefix(parserState.Current(), "entity") {
if parserState.Can(tokenBuffer) {
parserState.Event(tokenBuffer)
} else {
if tokenBuffer == "{}" {
parserState.Event("{")
parserState.Event("}")
tokenBuffer = ""
} else if parserState.Can("driver") {
l := NewPlugin(lastOp, tokenBuffer)
lastOp.Add(l)
lastOp = l
parserState.Event("driver")
} else {
return fmt.Errorf("Unexpected Token %s", tokenBuffer)
}
}
} else if strings.HasPrefix(parserState.Current(), "driver") {
if parserState.Can(tokenBuffer) {
parserState.Event(tokenBuffer)
} else {
lastKey = tokenBuffer
parserState.Event("key")
}
} else if strings.HasPrefix(parserState.Current(), "key") {
if parserState.Can(tokenBuffer) {
parserState.Event(tokenBuffer)
} else {
return fmt.Errorf("Unexpected Token %s", tokenBuffer)
}
} else if strings.HasPrefix(parserState.Current(), "value") {
lastOp.(*Plugin).Set(lastKey, strings.Trim(tokenBuffer, " "))
parserState.Event("val")
} else if strings.HasPrefix(parserState.Current(), "cond") {
if parserState.Can(tokenBuffer) {
l := NewBranch(lastOp, conditionName, expressionBuffer)
lastOp.Add(l)
lastOp = l
parserState.Event(tokenBuffer)
expressionBuffer = ""
} else if parserState.Current() == "cond_start" {
expressionBuffer += tokenBuffer
}
}
}
tokenBuffer = ""
} else {
tokenBuffer += string(buffer[i : i+width])
}
}
}
select {
case e := <-errChan:
return e
default:
}
if err != nil && err != io.EOF {
return err
}
if parserState.Current() != "section" {
return fmt.Errorf("Error parsing config. Unclosed entity")
}
return nil
}
