Add RAFT stuff

MyRaft/leader.py

@@ -0,0 +1,24 @@
+import MyRaft.state as state
+import MyRaft.node as node
+
+class Leader(state.State):
+    """The leader class represents the leader state in the raft algorithm"""
+    def __init__(self, context: node.RaftNode):
+        state.State.__init__(self, context)
+        print("We're a leader!")
+
+        # For indexes for each server to send. 
+        self.nextIndex = []
+        self.matchIndex = []
+
+        # Change our timeout.
+        self._context.set_timeout(self._context._heartbeat_timeout, 0)
+        # Send empty AppendEntries.
+        self._context.send_empty_AppendEntries()
+
+    def heartbeat_elapsed(self):
+        print("Sending an append entries message")
+        self._context.send_empty_AppendEntries()
+
+        # Don't forget to reset timer, otherwise they'll try run for leader.
+        self._context.set_timeout(self._context._heartbeat_timeout, 0)