Model: Add abort on generation

When the model is processing a prompt, add the ability to abort
on request cancellation. This is also a catch for a SIGINT.

Signed-off-by: kingbri <bdashore3@proton.me>

endpoints/OAI/utils/completion.py

@@ -2,6 +2,7 @@
 
 import pathlib
 from asyncio import CancelledError
+import threading
 from fastapi import HTTPException
 from typing import Optional
 
@@ -64,8 +65,10 @@ async def stream_generate_completion(data: CompletionRequest, model_path: pathli
     """Streaming generation for completions."""
 
     try:
+        abort_event = threading.Event()
+
         new_generation = model.container.generate_gen(
-            data.prompt, **data.to_gen_params()
+            data.prompt, abort_event, **data.to_gen_params()
         )
         async for generation in new_generation:
             response = _create_response(generation, model_path.name)
@@ -78,6 +81,7 @@ async def stream_generate_completion(data: CompletionRequest, model_path: pathli
     except CancelledError:
         # Get out if the request gets disconnected
 
+        abort_event.set()
         handle_request_disconnect("Completion generation cancelled by user.")
     except Exception:
         yield get_generator_error(