Added support to stream data over SSE.

app/operations.py

@@ -1,4 +1,5 @@
 from fastapi.routing import APIRouter
+from fastapi.responses import StreamingResponse
 from typing_extensions import Annotated
 from pydantic import Field
 from data.schemas import SelectResult, CachedCursorOut
@@ -77,3 +78,28 @@ async def fetch_cursor(
         cursor=cached_cursor,
         results={"columns": cached_cursor.query.columns, "data": result},
     )
+
+
+
+
+@router.get("/sse-stream-cursor", dependencies=[Depends(get_current_user)], status_code=200)
+async def server_side_events_stream_cursor(
+    cursor_id: str,
+    page_size: Annotated[int, Field(ge=1, le=1000)] = 50,
+):
+    cached_cursor = mysql.cached_cursors.get(cursor_id, None)
+    if cached_cursor is None:
+        raise CursorNotFound
+
+    async def stream():
+        while True:
+            result = await fetch_cursor(cursor_id=cursor_id, page_size=page_size)
+
+            serialized_result = (
+                result.model_dump_json()
+            )
+            yield f"data: {serialized_result}\n\n"  # Format as Server-Sent Event (SSE)
+            if result.cursor.is_closed:
+                break
+
+    return StreamingResponse(stream(), media_type="text/event-stream")