1 files changed, 45 insertions, 0 deletions
diff --git a/src/statemachine.rs b/src/statemachine.rs
new file mode 100644
index 0000000..a8b471d
--- /dev/null
+++ b/src/statemachine.rs
@@ -0,0 +1,45 @@
+struct Init;
+struct Master;
+struct Backup;
+
+enum Event {
+    Startup,
+    Shutdown,
+    MasterDownTimer,
+    AdvertTimer,
+}
+
+impl Init {
+    fn new() -> Init {
+        Init {}
+    }
+}
+
+trait VRRPv2StateMachine {
+    fn next(&self, event: Event) -> impl VRRPv2StateMachine;
+}
+
+impl VRRPv2StateMachine for Init {
+    fn next(&self, _event: Event) -> impl VRRPv2StateMachine {
+        Master {}
+    }
+}
+
+impl VRRPv2StateMachine for Master {
+    fn next(&self, _event: Event) -> impl VRRPv2StateMachine {
+        Backup {}
+    }
+}
+
+impl VRRPv2StateMachine for Backup {
+    fn next(&self, _event: Event) -> impl VRRPv2StateMachine {
+        Init {}
+    }
+}
+
+pub fn run() {
+    let sm = Init::new();
+    loop {
+        let _ = sm.next(Event::Startup);
+    }
+}