Add HW 4

homework/04-broadcast/solution/broadcast.py

@@ -0,0 +1,31 @@
+from anysystem import Context, Message, Process
+from typing import List
+
+
+class BroadcastProcess(Process):
+    def __init__(self, proc_id: str, processes: List[str]):
+        self._id = proc_id
+        self._processes = processes
+
+    def on_local_message(self, msg: Message, ctx: Context):
+        if msg.type == 'SEND':
+            bcast_msg = Message('BCAST', {
+                'text': msg['text']
+            })
+            # best-effort broadcast
+            for proc in self._processes:
+                ctx.send(bcast_msg, proc)
+
+    def on_start(self, ctx: Context):
+        pass
+
+    def on_message(self, msg: Message, sender: str, ctx: Context):
+        if msg.type == 'BCAST':
+            # deliver message to the local user
+            deliver_msg = Message('DELIVER', {
+                'text': msg['text']
+            })
+            ctx.send_local(deliver_msg)
+
+    def on_timer(self, timer_name: str, ctx: Context):
+        pass