feat: langchain improved

demos/use_cases/multi_frameworks/openai_protocol.py

@@ -0,0 +1,35 @@
+"""OpenAI API protocol utilities for standardized response formatting."""
+
+import time
+import uuid
+from typing import Optional
+
+
+def create_chat_completion_chunk(
+    model: str,
+    content: str,
+    finish_reason: Optional[str] = None,
+) -> dict:
+    """Create an OpenAI-compatible streaming chat completion chunk.
+
+    Args:
+        model: Model identifier to include in the response
+        content: Content text for this chunk
+        finish_reason: Optional finish reason ('stop', 'length', etc.)
+
+    Returns:
+        Dictionary formatted as OpenAI chat.completion.chunk
+    """
+    return {
+        "id": f"chatcmpl-{uuid.uuid4().hex[:8]}",
+        "object": "chat.completion.chunk",
+        "created": int(time.time()),
+        "model": model,
+        "choices": [
+            {
+                "index": 0,
+                "delta": {"content": content} if content else {},
+                "finish_reason": finish_reason,
+            }
+        ],
+    }