Show compare engine in progress and SQL skip reasons.

Co-authored-by: Cursor <cursoragent@cursor.com>

netx_api/biz_state/compare_service.py

@@ -1762,7 +1762,7 @@ def _run_sheet(
     port_map: dict[str, str],
     iface_normalize_rules: list[dict[str, str]] | None = None,
     store_unchanged: str = "auto",
-    on_load_progress: Callable[[str, int], None] | None = None,
+    on_load_progress: Callable[..., None] | None = None,
 ) -> dict[str, Any]:
     key_fields = list(sheet.get("key_fields") or [])
     iface_fields = list(sheet.get("iface_fields") or [])
@@ -1785,28 +1785,32 @@ def _run_sheet(
         ignore_ports = bool(ignore_ports)
     mid = sheet["metric_id"]
 
-    # PostgreSQL path: pushdown-safe sheets join in-DB (BGP-scale).
-    from .compare_sql import can_sql_compare, run_sql_sheet_compare
+    def _emit_load(side: str, n: int, **meta: Any) -> None:
+        if not on_load_progress:
+            return
+        try:
+            on_load_progress(side, n, **meta)
+        except TypeError:
+            on_load_progress(side, n)
 
-    if can_sql_compare(
+    # PostgreSQL path: pushdown-safe sheets join in-DB (BGP-scale).
+    from .compare_sql import run_sql_sheet_compare, sql_compare_skip_reason
+
+    skip_reason = sql_compare_skip_reason(
         db,
         sheet,
         port_map=port_map,
         iface_normalize_rules=iface_normalize_rules,
-    ):
+    )
+    if not skip_reason:
         try:
-
-            def _sql_progress(side: str, n: int) -> None:
-                if on_load_progress:
-                    on_load_progress(side, n)
-
             result = run_sql_sheet_compare(
                 db,
                 sheet=sheet,
                 before_batch_id=before_batch_id,
                 after_batch_id=after_batch_id,
                 store_unchanged=store_unchanged,
-                on_progress=_sql_progress,
+                on_progress=_emit_load,
             )
             summary = dict(result["summary"])
             # Engine already sets raw counts / policy; keep keys stable
@@ -1836,14 +1840,22 @@ def _run_sheet(
                 sheet_key(sheet),
                 mid,
             )
+            skip_reason = "sql_error_fallback"
+    else:
+        _log.info(
+            "python compare sheet=%s metric=%s skip_sql=%s",
+            sheet_key(sheet),
+            mid,
+            skip_reason,
+        )
+
+    _emit_load("before", 0, engine="python", note=skip_reason or "python", phase="loading")
 
     def _before_chunk(n: int) -> None:
-        if on_load_progress:
-            on_load_progress("before", n)
+        _emit_load("before", n, engine="python", note=skip_reason or "python", phase="loading")
 
     def _after_chunk(n: int) -> None:
-        if on_load_progress:
-            on_load_progress("after", n)
+        _emit_load("after", n, engine="python", note=skip_reason or "python", phase="loading")
 
     before_raw = _load_metric_rows(
         db, batch_id=before_batch_id, metric_id=mid, on_chunk=_before_chunk
@@ -2106,27 +2118,43 @@ def _execute_compare_into_run(db: Session, run_id: str) -> dict[str, Any]:
                     break
             _publish_sheets()
 
-            _load_pub = {"t": 0.0, "n": -1}
+            _load_pub = {"t": 0.0, "n": -1, "engine": ""}
 
-            def _on_load(side: str, n: int, _idx: int = idx, _sheet: dict = sheet) -> None:
+            def _on_load(
+                side: str,
+                n: int,
+                *,
+                engine: str = "python",
+                note: str = "",
+                phase: str | None = None,
+                _idx: int = idx,
+                _sheet: dict = sheet,
+            ) -> None:
                 now = time.monotonic()
-                # Avoid committing every 5k on million-row BGP loads
-                if n - _load_pub["n"] < 25_000 and now - _load_pub["t"] < 2.0:
-                    return
+                eng = str(engine or "python")
+                # SQL emits sparse updates; Python still throttle chunk spam
+                if eng != "sql":
+                    if n - _load_pub["n"] < 25_000 and now - _load_pub["t"] < 2.0:
+                        return
                 _load_pub["t"] = now
                 _load_pub["n"] = n
+                _load_pub["engine"] = eng
+                extra: dict[str, Any] = {
+                    "load_side": side,
+                    "rows_loaded": n,
+                    "engine": eng,
+                }
+                if note:
+                    extra["engine_note"] = str(note)[:128]
                 _set_run_progress(
                     db,
                     run,
-                    phase="loading",
+                    phase=str(phase or ("loading" if eng != "sql" else "sql_count")),
                     sheet_index=_idx,
                     sheet_total=total,
                     sheet=_sheet,
                     started_mono=started_mono,
-                    extra={
-                        "load_side": side,
-                        "rows_loaded": n,
-                    },
+                    extra=extra,
                 )
 
             _set_run_progress(
@@ -2137,6 +2165,7 @@ def _execute_compare_into_run(db: Session, run_id: str) -> dict[str, Any]:
                 sheet_total=total,
                 sheet=sheet,
                 started_mono=started_mono,
+                extra={"engine": "", "engine_note": ""},
             )
             one = _run_sheet(
                 db,

netx_api/biz_state/compare_sql.py

@@ -119,6 +119,53 @@ def _field_rules_sql_compatible(rules: Sequence[Mapping[str, Any]] | None) -> bo
     return True
 
 
+def sql_compare_skip_reason(
+    db: Session,
+    sheet: Mapping[str, Any],
+    *,
+    port_map: Mapping[str, str] | None = None,
+    iface_normalize_rules: Sequence[Mapping[str, str]] | None = None,
+) -> str:
+    """Empty string when SQL is allowed; otherwise a short reason for progress/logs.
+
+    Simple ``row_filters`` (eq/in/contains/…) used for BGP sheet splits are fine —
+    they do **not** force Python by themselves.
+    """
+    if not _dialect_is_postgres(db):
+        return "not_postgres"
+    if port_map:
+        return "port_map"
+    key_fields = [str(k).strip() for k in (sheet.get("key_fields") or []) if str(k).strip()]
+    if not key_fields:
+        return "no_key_fields"
+    if any(not _FIELD_RE.match(k) for k in key_fields):
+        return "unsafe_key_field"
+    iface_fields = [str(f).strip() for f in (sheet.get("iface_fields") or []) if str(f).strip()]
+    iface_set = set(iface_fields)
+    ignore_ports = sheet.get("ignore_port_changes")
+    if ignore_ports is True:
+        return "ignore_port_changes"
+    if ignore_ports is None and iface_set and any(k in iface_set for k in key_fields):
+        return "auto_ignore_ports"
+    field_rules = list(sheet.get("field_rules") or [])
+    if not _field_rules_sql_compatible(field_rules):
+        return "field_rules"
+    compare_fields = effective_compare_fields(
+        list(sheet.get("compare_fields") or []),
+        field_rules,
+    )
+    if any(not _FIELD_RE.match(str(f).strip()) for f in compare_fields if str(f).strip()):
+        return "unsafe_compare_field"
+    used = set(key_fields) | {str(f).strip() for f in compare_fields if str(f).strip()}
+    if iface_normalize_rules and (used & iface_set):
+        return "iface_normalize"
+    if not _filters_sql_compatible(list(sheet.get("row_filters") or [])):
+        return "row_filters"
+    if not str(sheet.get("metric_id") or "").strip():
+        return "no_metric_id"
+    return ""
+
+
 def can_sql_compare(
     db: Session,
     sheet: Mapping[str, Any],
@@ -127,39 +174,14 @@ def can_sql_compare(
     iface_normalize_rules: Sequence[Mapping[str, str]] | None = None,
 ) -> bool:
     """True when this sheet can run entirely as a PostgreSQL JOIN."""
-    if not _dialect_is_postgres(db):
-        return False
-    if port_map:
-        return False
-    key_fields = [str(k).strip() for k in (sheet.get("key_fields") or []) if str(k).strip()]
-    if not key_fields or any(not _FIELD_RE.match(k) for k in key_fields):
-        return False
-    iface_fields = [str(f).strip() for f in (sheet.get("iface_fields") or []) if str(f).strip()]
-    iface_set = set(iface_fields)
-    # Port-rename heuristic / map rewrite cannot be expressed here
-    ignore_ports = sheet.get("ignore_port_changes")
-    if ignore_ports is True:
-        return False
-    if ignore_ports is None and iface_set and any(k in iface_set for k in key_fields):
-        # Auto path may drop iface from match key — stay on Python
-        return False
-    field_rules = list(sheet.get("field_rules") or [])
-    if not _field_rules_sql_compatible(field_rules):
-        return False
-    compare_fields = effective_compare_fields(
-        list(sheet.get("compare_fields") or []),
-        field_rules,
+    return not bool(
+        sql_compare_skip_reason(
+            db,
+            sheet,
+            port_map=port_map,
+            iface_normalize_rules=iface_normalize_rules,
+        )
     )
-    if any(not _FIELD_RE.match(str(f).strip()) for f in compare_fields if str(f).strip()):
-        return False
-    used = set(key_fields) | {str(f).strip() for f in compare_fields if str(f).strip()}
-    if iface_normalize_rules and (used & iface_set):
-        return False
-    if not _filters_sql_compatible(list(sheet.get("row_filters") or [])):
-        return False
-    if not str(sheet.get("metric_id") or "").strip():
-        return False
-    return True
 
 
 def compile_row_filters_sql(
@@ -321,15 +343,24 @@ def run_sql_sheet_compare(
     before_batch_id: str,
     after_batch_id: str,
     store_unchanged: str = "auto",
-    on_progress: Callable[[str, int], None] | None = None,
+    on_progress: Callable[..., None] | None = None,
 ) -> dict[str, Any]:
     """Compare one sheet via PostgreSQL TEMP tables + FULL OUTER JOIN.
 
     Returns the same ``{summary, diffs, mapping_stats}`` shape as ``compare_rows``.
+    ``on_progress(side, n, *, engine=\"sql\", note=..., phase=...)``.
     """
     if not _dialect_is_postgres(db):
         raise RuntimeError("sql_compare_requires_postgres")
 
+    def _prog(side: str, n: int, *, phase: str = "sql_count", note: str = "") -> None:
+        if not on_progress:
+            return
+        try:
+            on_progress(side, n, engine="sql", note=note, phase=phase)
+        except TypeError:
+            on_progress(side, n)
+
     key_fields = [str(k).strip() for k in (sheet.get("key_fields") or []) if str(k).strip()]
     field_rules = list(sheet.get("field_rules") or [])
     rules = field_rule_map(field_rules)
@@ -350,6 +381,8 @@ def run_sql_sheet_compare(
     tb = f"_netx_cmp_b_{tag}"
     ta = f"_netx_cmp_a_{tag}"
 
+    _prog("before", 0, phase="sql_count", note="count")
+
     # Raw counts (no row_filters)
     raw_b = int(
         db.execute(
@@ -361,8 +394,7 @@ def run_sql_sheet_compare(
         ).scalar()
         or 0
     )
-    if on_progress:
-        on_progress("before", raw_b)
+    _prog("before", raw_b, phase="sql_count")
     raw_a = int(
         db.execute(
             text(
@@ -373,14 +405,14 @@ def run_sql_sheet_compare(
         ).scalar()
         or 0
     )
-    if on_progress:
-        on_progress("after", raw_a)
+    _prog("after", raw_a, phase="sql_count")
 
     base_params = {"bid": bid_b, "mid": mid, **filter_params}
     # Build TEMP sides
-    for tname, batch_id in ((tb, bid_b), (ta, bid_a)):
+    for tname, batch_id, side in ((tb, bid_b, "before"), (ta, bid_a, "after")):
         db.execute(text(f"DROP TABLE IF EXISTS {tname}"))
         params = {**base_params, "bid": batch_id}
+        _prog(side, raw_b if side == "before" else raw_a, phase="sql_project", note="temp")
         # PRESERVE ROWS: compare progress commits must not drop temps mid-run
         db.execute(
             text(
@@ -410,8 +442,7 @@ def run_sql_sheet_compare(
     after_n = int(
         db.execute(text(f"SELECT count(*) FROM {ta}")).scalar() or 0
     )
-    if on_progress:
-        on_progress("after", after_n)
+    _prog("after", after_n, phase="sql_join", note="join")
 
     changed_pred = _changed_predicate(compare_fields, rules)
     kind_expr = f"""

tests/test_biz_state_compare_sql.py

@@ -8,6 +8,7 @@ from unittest.mock import MagicMock
 from netx_api.biz_state.compare_sql import (
     can_sql_compare,
     compile_row_filters_sql,
+    sql_compare_skip_reason,
     _field_rules_sql_compatible,
     _filters_sql_compatible,
     _safe_field,
@@ -117,6 +118,8 @@ class CompareSqlGateTests(unittest.TestCase):
             "row_filters": [{"field": "afi", "op": "eq", "value": "ipv4"}],
         }
         self.assertTrue(can_sql_compare(_db(), sheet, port_map={}))
+        # BGP afi/vrf sheet splits via row_filters must not force Python
+        self.assertEqual(sql_compare_skip_reason(_db(), sheet, port_map={}), "")
 
     def test_rejects_iface_normalize_when_key_uses_iface(self) -> None:
         sheet = {

web/src/i18n/en.ts

@@ -501,6 +501,10 @@ const en = {
     runStatusDoneSec: "Done {{s}}s",
     runProgress: "{{phase}} · sheet {{i}}/{{n}} · {{sheet}} · {{s}}s elapsed",
     runRowsLoaded: "Loaded {{side}} {{n}} rows",
+    runRowsSqlCount: "DB count {{side}} {{n}} rows",
+    runEngineSql: "engine SQL",
+    runEnginePython: "engine Python",
+    runEngineNote: "reason {{note}}",
     sheetPending: "Pending",
     ranWithDuration: "Compare finished ({{s}}s)",
     unchangedNotStored: "Success rows were counted but not stored. Set “Store success rows” to sample and re-run for spot-check.",

web/src/i18n/zh.ts

@@ -500,6 +500,10 @@ const zh = {
     runStatusDoneSec: "完成 {{s}}s",
     runProgress: "{{phase}} · 表 {{i}}/{{n}} · {{sheet}} · 已用 {{s}}s",
     runRowsLoaded: "已加载 {{side}} {{n}} 行",
+    runRowsSqlCount: "库内统计 {{side}} {{n}} 行",
+    runEngineSql: "引擎 SQL",
+    runEnginePython: "引擎 Python",
+    runEngineNote: "原因 {{note}}",
     sheetPending: "等待中",
     ranWithDuration: "比对完成（耗时 {{s}} 秒）",
     unchangedNotStored: "成功行仅统计数量未落库。可在任务配置将「成功行保存」改为抽样后重新比对（抽查用）。",

web/src/pages/network/BizComparePage.tsx

@@ -1893,7 +1893,10 @@ export function BizComparePage({ pageMode = "all" }: { pageMode?: BizComparePage
     diff_rows?: number;
     load_side?: string;
     rows_loaded?: number;
+    engine?: string;
+    engine_note?: string;
   };
+  const runEngine = String(runProgress.engine || "").toLowerCase();
 
   // Poll active compare runs so the modal can be closed and reopened safely.
   useEffect(() => {
@@ -3003,7 +3006,10 @@ export function BizComparePage({ pageMode = "all" }: { pageMode?: BizComparePage
                           sheet_title?: string;
                           rows_loaded?: number;
                           load_side?: string;
+                          engine?: string;
+                          engine_note?: string;
                         };
+                        const eng = String(prog.engine || "").toLowerCase();
                         const stLabel =
                           st === "running" || st === "queued"
                             ? t("bizCompare.runStatusRunning")
@@ -3018,15 +3024,25 @@ export function BizComparePage({ pageMode = "all" }: { pageMode?: BizComparePage
                           <tr key={String(r.id)} className={selected ? "is-selected" : undefined}>
                             <td>
                               <NmStatusChip color={jobChipColor(st)}>{stLabel}</NmStatusChip>
-                              {active && prog.phase ? (
+                              {active && (prog.phase || eng) ? (
                                 <div className="muted" style={{ fontSize: "0.75rem", marginTop: 4 }}>
-                                  {prog.phase}
+                                  {eng === "sql"
+                                    ? t("bizCompare.runEngineSql")
+                                    : eng === "python"
+                                      ? t("bizCompare.runEnginePython")
+                                      : ""}
+                                  {eng && prog.engine_note
+                                    ? ` · ${prog.engine_note}`
+                                    : ""}
+                                  {prog.phase ? `${eng ? " · " : ""}${prog.phase}` : ""}
                                   {prog.sheet_total
                                     ? ` · ${prog.sheet_index || 0}/${prog.sheet_total}`
                                     : ""}
                                   {prog.sheet_title ? ` · ${prog.sheet_title}` : ""}
                                   {Number(prog.rows_loaded || 0) > 0
-                                    ? ` · ${prog.load_side || ""} ${prog.rows_loaded}`
+                                    ? eng === "sql"
+                                      ? ` · ${prog.load_side || ""} ${prog.rows_loaded}`
+                                      : ` · ${prog.load_side || ""} ${prog.rows_loaded}`
                                     : ""}
                                 </div>
                               ) : null}
@@ -3240,6 +3256,18 @@ export function BizComparePage({ pageMode = "all" }: { pageMode?: BizComparePage
               {runDetail && runIsActive ? (
                 <div className="bs-cmp-progress" role="status" aria-live="polite">
                   <strong>{t("bizCompare.runStatusRunning")}</strong>
+                  {runEngine === "sql" || runEngine === "python" ? (
+                    <span className="muted">
+                      {runEngine === "sql"
+                        ? t("bizCompare.runEngineSql")
+                        : t("bizCompare.runEnginePython")}
+                      {runProgress.engine_note
+                        ? ` · ${t("bizCompare.runEngineNote", {
+                            note: String(runProgress.engine_note),
+                          })}`
+                        : ""}
+                    </span>
+                  ) : null}
                   <span className="muted">
                     {t("bizCompare.runProgress", {
                       phase: String(runProgress.phase || "…"),
@@ -3253,10 +3281,15 @@ export function BizComparePage({ pageMode = "all" }: { pageMode?: BizComparePage
                   </span>
                   {Number(runProgress.rows_loaded || 0) > 0 ? (
                     <span className="muted">
-                      {t("bizCompare.runRowsLoaded", {
-                        side: String(runProgress.load_side || "—"),
-                        n: String(runProgress.rows_loaded || 0),
-                      })}
+                      {runEngine === "sql"
+                        ? t("bizCompare.runRowsSqlCount", {
+                            side: String(runProgress.load_side || "—"),
+                            n: String(runProgress.rows_loaded || 0),
+                          })
+                        : t("bizCompare.runRowsLoaded", {
+                            side: String(runProgress.load_side || "—"),
+                            n: String(runProgress.rows_loaded || 0),
+                          })}
                     </span>
                   ) : null}
                   {runDetail.message ? (