fsm: add reservation fsm compiling

fsm/fsm.go

@@ -206,6 +206,8 @@ func (s *StateMachine) SendEvent(event EventType, eventCtx EventContext) error {
 		// current state.
 		state, err := s.getNextState(event)
 		if err != nil {
+			log.Errorf("unable to get next state: %v from event: "+
+				"%v, current state: %v", err, event, s.current)
 			return ErrEventRejected
 		}
 

fsm/stateparser/stateparser.go

@@ -10,6 +10,7 @@ import (
 	"sort"
 
 	"github.com/lightninglabs/loop/fsm"
+	"github.com/lightninglabs/loop/instantout/reservation"
 )
 
 func main() {
@@ -41,6 +42,13 @@ func run() error {
 			return err
 		}
 
+	case "reservation":
+		reservationFSM := &reservation.FSM{}
+		err = writeMermaidFile(fp, reservationFSM.GetReservationStates())
+		if err != nil {
+			return err
+		}
+
 	default:
 		fmt.Println("Missing or wrong argument: fsm must be one of:")
 		fmt.Println("\treservations")

instantout/reservation/reservation_fsm.md

@@ -0,0 +1,17 @@
+```mermaid
+stateDiagram-v2
+[*] --> Init: OnServerRequest
+Confirmed
+Confirmed --> TimedOut: OnTimedOut
+Confirmed --> Confirmed: OnRecover
+Failed
+Init
+Init --> Failed: OnError
+Init --> WaitForConfirmation: OnBroadcast
+Init --> Failed: OnRecover
+TimedOut
+WaitForConfirmation
+WaitForConfirmation --> WaitForConfirmation: OnRecover
+WaitForConfirmation --> Confirmed: OnConfirmed
+WaitForConfirmation --> TimedOut: OnTimedOut
+```

scripts/fsm-generate.sh

@@ -1,2 +1,3 @@
 #!/usr/bin/env bash
-go run ./fsm/stateparser/stateparser.go --out ./fsm/example_fsm.md --fsm example
+go run ./fsm/stateparser/stateparser.go --out ./fsm/example_fsm.md --fsm example
+go run ./fsm/stateparser/stateparser.go --out ./reservation/reservation_fsm.md --fsm reservation