Add template for event emitter plugins

Author: benthomasson

extensions/eda/plugins/event_emitter/template.py

@@ -0,0 +1,52 @@
+#!/usr/bin/env python3
+"""
+template.py
+
+An ansible-rulebook event emitter plugin template.
+
+Examples:
+  sources:
+    - template:
+
+"""
+import asyncio
+from typing import Any, Dict
+
+
+async def main(queue: asyncio.Queue, args: Dict[str, Any]):
+    # The main entrypoint for the emitter plugin.
+    # This function is called by the rulebook engine.
+    # The queue is used to send messages from the rulebook engine to the plugin.
+    # The args dictionary contains the arguments passed to the plugin in the rulebook.
+    delay = args.get("delay", 0)
+
+    while True:
+        # Get a message from the queue.
+        # This is a blocking call, so the plugin will wait here until a message is available.
+        message = await queue.get()
+        # Do something with the message.
+        # This is where you would send the message to a remote service.
+        # If the message is None, then the rulebook engine is shutting down.
+        if message is None:
+            break
+        # Here we just print the message as an example.
+        print(message)
+
+
+if __name__ == "__main__":
+    # Test your plugin locally by running this file directly.
+
+    # We use the MockQueue class to simulate the queue for testing.
+    # In production, the queue will be provided by the rulebook engine.
+    class MockQueue:
+        count = 10
+        async def get(self):
+            self.count -= 1
+            if self.count == 0:
+                return None
+            else:
+                return {'message': 'hello world'}
+
+    mock_arguments = dict()
+    asyncio.run(main(MockQueue(), mock_arguments))
+