fix(telemetry): get rid of annoying sqlite span export error

llama_stack/providers/inline/telemetry/meta_reference/sqlite_span_processor.py

@@ -9,6 +9,7 @@ import os
 import sqlite3
 import threading
 from datetime import datetime, timezone
+from enum import Enum
 
 from opentelemetry.sdk.trace import SpanProcessor
 from opentelemetry.trace import Span
@@ -153,6 +154,9 @@ class SQLiteSpanProcessor(SpanProcessor):
             )
 
             for event in span.events:
+                name = event.name
+                if isinstance(name, Enum):
+                    name = name.value
                 cursor.execute(
                     """
                     INSERT INTO span_events (
@@ -161,7 +165,7 @@ class SQLiteSpanProcessor(SpanProcessor):
                 """,
                     (
                         span_id,
-                        event.name,
+                        name,
                         datetime.fromtimestamp(event.timestamp / 1e9, timezone.utc).isoformat(),
                         json.dumps(dict(event.attributes)),
                     ),