From c227bb40789c4352badf805779a3c122479a8e01 Mon Sep 17 00:00:00 2001
From: OoO <ooo@MacBook-Pro.local>
Date: Wed, 13 May 2026 12:49:03 +0800
Subject: [PATCH] =?UTF-8?q?=E8=A3=9C=E7=AB=B6=E5=93=81=20Feeder=20?=
 =?UTF-8?q?=E6=90=9C=E5=B0=8B=E8=A9=9E=20fallback=20=E8=A8=BA=E6=96=B7?=
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---
 services/competitor_price_feeder.py             |  6 +++++-
 ...est_competitor_match_attempts_persistence.py | 17 +++++++++++++++++
 2 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/services/competitor_price_feeder.py b/services/competitor_price_feeder.py
index 2b0acdd..cc79e39 100644
--- a/services/competitor_price_feeder.py
+++ b/services/competitor_price_feeder.py
@@ -145,7 +145,11 @@ def _build_search_keywords(momo_name: str) -> list:
         elif parsed.keywords:
             terms.append(" ".join(parsed.keywords[:4]))
     except Exception:
-        pass
+        logger.debug(
+            "[Feeder] ProductNameParser failed while building search keywords; "
+            "fallback to cleaned product name",
+            exc_info=True,
+        )
 
     return _dedupe_terms(terms)
 
diff --git a/tests/test_competitor_match_attempts_persistence.py b/tests/test_competitor_match_attempts_persistence.py
index 038524f..bd042a0 100644
--- a/tests/test_competitor_match_attempts_persistence.py
+++ b/tests/test_competitor_match_attempts_persistence.py
@@ -1,4 +1,5 @@
 from pathlib import Path
+import logging
 
 
 ROOT = Path(__file__).resolve().parents[1]
@@ -26,3 +27,19 @@ def test_competitor_feeder_persists_all_match_attempt_outcomes():
     assert "best_match_score" in migration
     assert "error_message" in migration
     assert "idx_comp_match_attempts_sku_source_time" in migration
+
+
+def test_competitor_feeder_logs_keyword_parser_fallback(monkeypatch, caplog):
+    from services import competitor_price_feeder
+    from services.price_comparison import ProductNameParser
+
+    def broken_parse(self, *_args, **_kwargs):
+        raise RuntimeError("parser unavailable")
+
+    monkeypatch.setattr(ProductNameParser, "parse", broken_parse)
+    caplog.set_level(logging.DEBUG, logger="services.competitor_price_feeder")
+
+    terms = competitor_price_feeder._build_search_keywords("理膚寶水 B5 修復霜 40ml")
+
+    assert terms
+    assert "fallback to cleaned product name" in caplog.text