refactor: keep subscription search within architecture budget

app/application/subscription/execution.py

@@ -6,7 +6,12 @@ from dataclasses import dataclass
 from typing import Callable, Mapping, Optional, Protocol
 from uuid import uuid4
 
-from app.application.subscription.sitebudget import SiteBudgetClaim
+from app.application.subscription.sitebudget import (
+    SiteBudgetClaim,
+    SubscriptionSearchDeferred,
+    SubscriptionSiteBudgetDeferral,
+)
+from app.runtime.log import logger
 
 
 @dataclass(frozen=True, slots=True)
@@ -96,6 +101,48 @@ class SubscriptionExecutionContext:
         self.report_phase("submitting")
 
 
+def raise_subscription_site_budget_failures(failures: tuple[str, ...]) -> None:
+    """在成功站点结果完成处理后暴露其余站点的聚合失败。"""
+    if failures:
+        raise RuntimeError("；".join(failures))
+
+
+def raise_subscription_site_budget_deferral(
+    deferrals: tuple[SubscriptionSiteBudgetDeferral, ...],
+    execution_context: Optional[SubscriptionExecutionContext],
+) -> None:
+    """在没有下载副作用时，将临时站点冲突转换为持久队列延后。"""
+    if not deferrals or (execution_context and execution_context.download_started):
+        return
+    retry_at = min(deferrals, key=lambda item: item.retry_at).retry_at
+    site_ids = tuple(dict.fromkeys(item.site_id for item in deferrals))
+    raise SubscriptionSearchDeferred(retry_at=retry_at, site_ids=site_ids)
+
+
+def handle_subscription_search_deferred(
+    queue: SubscriptionSearchRepository,
+    task_id: str,
+    lease_token: str,
+    subscribe_name: str,
+    deferred: SubscriptionSearchDeferred,
+    record: Callable[[str, Optional[str]], None],
+) -> None:
+    """把站点预算冲突重新入队，并记录为可恢复而非失败的任务结果。"""
+    requeued = queue.defer_task(
+        task_id=task_id,
+        lease_token=lease_token,
+        available_at=deferred.retry_at,
+    )
+    if requeued:
+        logger.debug(
+            f"订阅 {subscribe_name} 站点预算冲突，已排队至 {deferred.retry_at} 后重试，"
+            f"sites={','.join(str(site_id) for site_id in deferred.site_ids)}"
+        )
+        record("requeued", "site_budget_deferred")
+    else:
+        logger.debug(f"订阅搜索任务 {task_id} 租约已变化，跳过重复站点预算重排队")
+
+
 @dataclass(frozen=True, slots=True)
 class SearchBatchSnapshot:
     """订阅搜索批次的持久业务状态快照。"""

app/chain/subscribe/search.py

@@ -19,6 +19,9 @@ from app.application.subscription.execution import (
     SearchTaskSnapshot,
     SubscriptionExecutionContext,
     SubscriptionSearchRepository,
+    handle_subscription_search_deferred,
+    raise_subscription_site_budget_deferral,
+    raise_subscription_site_budget_failures,
 )
 from app.application.subscription.observability import (
     SearchExecutionSummary,
@@ -33,7 +36,6 @@ from app.application.subscription.sitebudget import (
     SubscriptionSearchCancelled,
     SubscriptionSearchDeferred,
     SubscriptionSiteBudget,
-    SubscriptionSiteBudgetDeferral,
 )
 from app.chain.media import MediaChain
 from app.chain.search.facade import SearchChain
@@ -619,19 +621,9 @@ class _SubscribeSearchQueueOwner(_SubscribeSearchQueueCoordinator):
                     "system_stop" if system_stopped else "cancelled",
                 )
         except SubscriptionSearchDeferred as deferred:
-            requeued = queue.defer_task(
-                task_id=task_id,
-                lease_token=lease_token,
-                available_at=deferred.retry_at,
+            handle_subscription_search_deferred(
+                queue, task_id, lease_token, subscribe.name, deferred, summary.record
             )
-            if requeued:
-                logger.debug(
-                    f"订阅 {subscribe.name} 站点预算冲突，已排队至 {deferred.retry_at} 后重试，"
-                    f"sites={','.join(str(site_id) for site_id in deferred.site_ids)}"
-                )
-                summary.record("requeued", "site_budget_deferred")
-            else:
-                logger.debug(f"订阅搜索任务 {task_id} 租约已变化，跳过重复站点预算重排队")
         except Exception as err:
             logger.error(f"订阅 {subscribe.name} 搜索失败：{str(err)}", exc_info=True)
             queue.finish_task(
@@ -848,22 +840,22 @@ class SubscribeSearchOwner(_SubscribeSearchQueueOwner):
         if not contexts:
             logger.debug(f"订阅 {subscribe.keyword or subscribe.name} 未搜索到资源")
             if not site_budget_failures:
-                self._raise_site_budget_deferral(site_budget_deferrals, execution_context)
+                raise_subscription_site_budget_deferral(site_budget_deferrals, execution_context)
             self.finish_subscribe_or_not(
                 subscribe=subscribe,
                 meta=meta,
                 mediainfo=mediainfo,
                 lefts=no_exists,
             )
-            self._raise_site_budget_failures(site_budget_failures)
+            raise_subscription_site_budget_failures(site_budget_failures)
             return subscribe
         matched = self._filter_search_contexts(subscribe, contexts)
         if not matched:
             logger.debug(f"订阅 {subscribe.name} 没有符合过滤条件的资源")
             if not site_budget_failures:
-                self._raise_site_budget_deferral(site_budget_deferrals, execution_context)
+                raise_subscription_site_budget_deferral(site_budget_deferrals, execution_context)
             self.finish_subscribe_or_not(subscribe=subscribe, meta=meta, mediainfo=mediainfo, lefts=no_exists)
-            self._raise_site_budget_failures(site_budget_failures)
+            raise_subscription_site_budget_failures(site_budget_failures)
             return subscribe
         if execution_context:
             execution_context.report_phase("preparing")
@@ -888,28 +880,10 @@ class SubscribeSearchOwner(_SubscribeSearchQueueOwner):
                 downloads=downloads,
                 lefts=lefts,
             )
-        self._raise_site_budget_failures(site_budget_failures)
-        self._raise_site_budget_deferral(site_budget_deferrals, execution_context)
+        raise_subscription_site_budget_failures(site_budget_failures)
+        raise_subscription_site_budget_deferral(site_budget_deferrals, execution_context)
         return cast(Optional[SubscriptionSnapshot], current)
 
-    @staticmethod
-    def _raise_site_budget_failures(failures: tuple[str, ...]) -> None:
-        """在成功站点结果完成处理后暴露其余站点的聚合失败。"""
-        if failures:
-            raise RuntimeError("；".join(failures))
-
-    @staticmethod
-    def _raise_site_budget_deferral(
-        deferrals: tuple[SubscriptionSiteBudgetDeferral, ...],
-        execution_context: Optional[SubscriptionExecutionContext],
-    ) -> None:
-        """在没有下载副作用时，将临时站点冲突转换为持久队列延后。"""
-        if not deferrals or (execution_context and execution_context.download_started):
-            return
-        retry_at = min(deferrals, key=lambda item: item.retry_at).retry_at
-        site_ids = tuple(dict.fromkeys(item.site_id for item in deferrals))
-        raise SubscriptionSearchDeferred(retry_at=retry_at, site_ids=site_ids)
-
     def _filter_search_contexts(
         self,
         subscribe: SubscriptionSnapshot,