refactor: use injected eventmanager in chain instance methods

app/chain/download.py

@@ -961,7 +961,7 @@ class DownloadChain(ChainBase):
             downloader=downloader,
             origin=source,
         )
-        event = eventmanager.send_event(ChainEventType.ResourceSelection, event_data)
+        event = self.eventmanager.send_event(ChainEventType.ResourceSelection, event_data)
         if event and event.event_data:
             event_data = event.event_data
             if event_data.updated and event_data.updated_contexts is not None:

app/chain/media.py

@@ -19,7 +19,7 @@ from app.domain.context import (
     MusicArtistInfo,
     MusicInfo,
 )
-from app.runtime.events import eventmanager, Event
+from app.runtime.events import Event
 from app.domain.meta.metabase import MetaBase
 from app.domain.meta.metamusic import MetaMusic
 from app.domain.metainfo import MetaInfo, MetaInfoPath
@@ -450,8 +450,8 @@ class MediaChain(ChainBase, metaclass=Singleton):
 
 
 
-    @staticmethod
     def select_recognize_source(
+            self,
             log_name: str, log_context: str, native_fn, plugin_fn,
             is_recognized=None,
             plugin_event: ChainEventType = ChainEventType.NameRecognize,
@@ -470,7 +470,8 @@ class MediaChain(ChainBase, metaclass=Singleton):
         if is_recognized is None:
             is_recognized = lambda result: bool(result)
         mediainfo = None
-        plugin_available = eventmanager.check(plugin_event)
+        # 插件可用性检查走注入的事件管理器，避免链实例直连全局单例
+        plugin_available = self.eventmanager.check(plugin_event)
         if get_chain_runtime_config_snapshot().recognize_plugin_first and plugin_available:
             # 插件优先
             logger.info(f"插件识别优先模式已开启。请求辅助识别，标题：{log_name} ...")
@@ -758,7 +759,7 @@ class MediaChain(ChainBase, metaclass=Singleton):
                 music_type=music_type,
             )
         # 发送请求事件，等待结果
-        result: Event = eventmanager.send_event(
+        result: Event = self.eventmanager.send_event(
             ChainEventType.NameRecognize,
             {
                 "title": title,
@@ -820,7 +821,7 @@ class MediaChain(ChainBase, metaclass=Singleton):
         :param music_type: 音乐实体类型
         """
         # 发送音乐名称识别事件，等待插件返回标题要素
-        result: Event = eventmanager.send_event(
+        result: Event = self.eventmanager.send_event(
             ChainEventType.MusicNameRecognize,
             {
                 "title": title,
@@ -1507,14 +1508,14 @@ class MediaChain(ChainBase, metaclass=Singleton):
             media_id=media_id,
             target_media_source=target_source,
         )
-        event = eventmanager.send_event(
+        event = self.eventmanager.send_event(
             ChainEventType.MediaRecognizeConvert, event_data,
         )
         return event_data.media_dict if event and event_data.media_dict else None
 
 
-    @staticmethod
     async def async_select_recognize_source(
+            self,
             log_name: str, log_context: str, native_fn, plugin_fn,
             is_recognized=None,
             plugin_event: ChainEventType = ChainEventType.NameRecognize,
@@ -1532,7 +1533,8 @@ class MediaChain(ChainBase, metaclass=Singleton):
         if is_recognized is None:
             is_recognized = lambda result: bool(result)
         mediainfo = None
-        plugin_available = eventmanager.check(plugin_event)
+        # 插件可用性检查走注入的事件管理器，避免链实例直连全局单例
+        plugin_available = self.eventmanager.check(plugin_event)
         if get_chain_runtime_config_snapshot().recognize_plugin_first and plugin_available:
             # 插件优先
             logger.info(f"插件优先模式已开启。请求辅助识别，标题：{log_name} ...")
@@ -1696,7 +1698,7 @@ class MediaChain(ChainBase, metaclass=Singleton):
                 music_type=music_type,
             )
         # 发送请求事件，等待结果
-        result: Event = await eventmanager.async_send_event(
+        result: Event = await self.eventmanager.async_send_event(
             ChainEventType.NameRecognize,
             {
                 "title": title,
@@ -1758,7 +1760,7 @@ class MediaChain(ChainBase, metaclass=Singleton):
         :param music_type: 音乐实体类型
         """
         # 发送音乐名称识别事件，等待插件返回标题要素
-        result: Event = await eventmanager.async_send_event(
+        result: Event = await self.eventmanager.async_send_event(
             ChainEventType.MusicNameRecognize,
             {
                 "title": title,
@@ -2053,7 +2055,7 @@ class MediaChain(ChainBase, metaclass=Singleton):
             media_id=media_id,
             target_media_source=target_source,
         )
-        event = await eventmanager.async_send_event(
+        event = await self.eventmanager.async_send_event(
             ChainEventType.MediaRecognizeConvert, event_data,
         )
         return event_data.media_dict if event and event_data.media_dict else None

app/chain/site.py

@@ -74,7 +74,7 @@ class SiteChain(InteractionChainMixin, ChainBase):
                 payload=userdata.model_dump(),
             )
             # 发送事件
-            eventmanager.send_event(EventType.SiteRefreshed, {
+            self.eventmanager.send_event(EventType.SiteRefreshed, {
                 "site_id": site.get("id")
             })
             self._post_site_messages(site=site, userdata=userdata)
@@ -163,7 +163,7 @@ class SiteChain(InteractionChainMixin, ChainBase):
                     data={"total": total_num, "finished": index},
                 )
         if any_site_updated:
-            eventmanager.send_event(EventType.SiteRefreshed, {
+            self.eventmanager.send_event(EventType.SiteRefreshed, {
                 "site_id": "*"
             })
         if progress_callback:
@@ -461,7 +461,7 @@ class SiteChain(InteractionChainMixin, ChainBase):
 
             # 通知站点更新
             if indexer:
-                eventmanager.send_event(EventType.SiteUpdated, {
+                self.eventmanager.send_event(EventType.SiteUpdated, {
                     "domain": domain,
                 })
             if progress_callback:

app/chain/subscribe.py

@@ -934,7 +934,7 @@ class SubscribeChain(MusicSubscribeMixin, InteractionChainMixin, ChainBase):
         """同步执行提交后消息、事件和统计，异常不再触碰数据库事务。"""
         if context.notification:
             self.post_message(_SchemaMessage.model_validate(context.notification))
-        eventmanager.send_event(EventType.SubscribeAdded, {
+        self.eventmanager.send_event(EventType.SubscribeAdded, {
             "subscribe_id": subscribe_id,
             "idempotency_key": (
                 f"subscribe.added:{subscribe_id}:"
@@ -958,7 +958,7 @@ class SubscribeChain(MusicSubscribeMixin, InteractionChainMixin, ChainBase):
             await self.async_post_message(
                 _SchemaMessage.model_validate(context.notification)
             )
-        await eventmanager.async_send_event(EventType.SubscribeAdded, {
+        await self.eventmanager.async_send_event(EventType.SubscribeAdded, {
             "subscribe_id": subscribe_id,
             "idempotency_key": (
                 f"subscribe.added:{subscribe_id}:"
@@ -3112,7 +3112,7 @@ class SubscribeChain(MusicSubscribeMixin, InteractionChainMixin, ChainBase):
         if subscribe.state == "P":
             return
         # 发送订阅完成判定事件，在写入 DB 前，允许外部据完结策略否决本次自动完成
-        completion_event = eventmanager.send_event(
+        completion_event = self.eventmanager.send_event(
             ChainEventType.SubscribeCompletionCheck,
             SubscribeCompletionCheckEventData(subscribe=subscribe, mediainfo=mediainfo, meta=meta))
         if completion_event and completion_event.event_data:

app/chain/transfer.py

@@ -18,7 +18,6 @@ from app.chain.storage import StorageChain
 from app.chain.tmdb import TmdbChain
 from app.runtime.config import global_vars
 from app.domain.context import MediaInfo, MusicInfo, TorrentInfo
-from app.runtime.events import eventmanager
 from app.domain.meta.metabase import MetaBase
 from app.domain.meta.metamusic import MetaMusic
 from app.domain.metainfo import MetaInfoPath
@@ -1487,7 +1486,7 @@ class TransferChain(FileFilterMixin, ScrapeBatchMixin, EpisodeFormatMixin, Histo
             source_event_data = StorageOperSelectionEventData(
                 storage=task.fileitem.storage,
             )
-            source_event = eventmanager.send_event(
+            source_event = self.eventmanager.send_event(
                 ChainEventType.StorageOperSelection, source_event_data
             )
             # 使用事件返回的上下文数据
@@ -1503,7 +1502,7 @@ class TransferChain(FileFilterMixin, ScrapeBatchMixin, EpisodeFormatMixin, Histo
             target_event_data = StorageOperSelectionEventData(
                 storage=task.target_storage,
             )
-            target_event = eventmanager.send_event(
+            target_event = self.eventmanager.send_event(
                 ChainEventType.StorageOperSelection, target_event_data
             )
             # 使用事件返回的上下文数据

tests/test_bangumi_media_type.py

@@ -108,7 +108,8 @@ def test_media_identity_conversion_rejects_invalid_pair_without_plugin_handler()
         media_source=MediaSource.Bangumi,
         media_id="0",
     ) is None
-    with patch("app.chain.media.eventmanager.send_event", return_value=None):
+    # 无插件处理器：注入返回空的 eventmanager 桩
+    chain.eventmanager = Mock(send_event=Mock(return_value=None))
     assert MediaChain.convert_media_identity(
         chain,
         target_source=MediaSource.TheAudioDB,
@@ -129,7 +130,8 @@ def test_media_identity_conversion_dispatches_plugin_source() -> None:
         event_data.media_dict.update(result)
         return Mock(event_data=event_data)
 
-    with patch("app.chain.media.eventmanager.send_event", side_effect=handle_event):
+    # 事件经注入的 eventmanager 发送，测试桩直接提供实例依赖
+    chain.eventmanager = Mock(send_event=Mock(side_effect=handle_event))
     converted = MediaChain.convert_media_identity(
         chain,
         target_source=MediaSource.TMDB,
@@ -211,10 +213,8 @@ def test_async_media_identity_conversion_dispatches_plugin_source() -> None:
         event_data.media_dict.update(result)
         return Mock(event_data=event_data)
 
-    with patch(
+    # 事件经注入的 eventmanager 发送，测试桩直接提供实例依赖
-        "app.chain.media.eventmanager.async_send_event",
+    chain.eventmanager = Mock(async_send_event=AsyncMock(side_effect=handle_event))
-        new=AsyncMock(side_effect=handle_event),
-    ):
     converted = asyncio.run(MediaChain.async_convert_media_identity(
         chain,
         target_source=MediaSource.Douban,

tests/test_download_chain.py

@@ -558,6 +558,8 @@ def test_batch_download_rejects_complete_coverage_when_files_do_not_cover_target
     monkeypatch.setattr(download_module.eventmanager, "send_event", lambda *args, **kwargs: None)
 
     chain = DownloadChain.__new__(DownloadChain)
+    chain.eventmanager = MagicMock()
+    chain.eventmanager.send_event.return_value = None
     chain.download_torrent = MagicMock(return_value=(b"torrent-content", "", ["demo.mkv"]))
     chain.download_single = MagicMock(return_value="hash")
 
@@ -588,6 +590,8 @@ def test_batch_download_preserves_special_season_zero(monkeypatch):
     monkeypatch.setattr(download_module.eventmanager, "send_event", lambda *args, **kwargs: None)
 
     chain = DownloadChain.__new__(DownloadChain)
+    chain.eventmanager = MagicMock()
+    chain.eventmanager.send_event.return_value = None
     chain.download_torrent = MagicMock(return_value=(b"torrent-content", "", ["demo.mkv"]))
     chain.download_single = MagicMock(return_value="hash")
 
@@ -623,6 +627,8 @@ def test_batch_download_rejects_complete_coverage_when_only_missing_episodes_mat
     monkeypatch.setattr(download_module.eventmanager, "send_event", lambda *args, **kwargs: None)
 
     chain = DownloadChain.__new__(DownloadChain)
+    chain.eventmanager = MagicMock()
+    chain.eventmanager.send_event.return_value = None
     chain.download_torrent = MagicMock(return_value=(b"torrent-content", "", ["demo.mkv"]))
     chain.download_single = MagicMock(return_value="hash")
 
@@ -655,6 +661,8 @@ def test_batch_download_tries_next_episode_candidate_when_first_download_fails(m
     monkeypatch.setattr(download_module.eventmanager, "send_event", lambda *args, **kwargs: None)
 
     chain = DownloadChain.__new__(DownloadChain)
+    chain.eventmanager = MagicMock()
+    chain.eventmanager.send_event.return_value = None
     chain.download_single = MagicMock(side_effect=[None, "hash"])
 
     first_context = _build_tv_context(episode_list=[1])
@@ -692,6 +700,8 @@ def test_batch_download_does_not_download_duplicate_movie_after_success(monkeypa
     monkeypatch.setattr(download_module.eventmanager, "send_event", lambda *args, **kwargs: None)
 
     chain = DownloadChain.__new__(DownloadChain)
+    chain.eventmanager = MagicMock()
+    chain.eventmanager.send_event.return_value = None
     chain.download_single = MagicMock(return_value="hash")
 
     first_context = SimpleNamespace(
@@ -720,6 +730,8 @@ def test_batch_download_threads_custom_words_to_download_single(monkeypatch):
     monkeypatch.setattr(download_module.eventmanager, "send_event", lambda *args, **kwargs: None)
 
     chain = DownloadChain.__new__(DownloadChain)
+    chain.eventmanager = MagicMock()
+    chain.eventmanager.send_event.return_value = None
     chain.download_single = MagicMock(return_value="hash")
 
     context = SimpleNamespace(
@@ -744,6 +756,8 @@ def test_batch_download_applies_custom_words_to_torrent_file_episodes(monkeypatc
     monkeypatch.setattr(download_module.eventmanager, "send_event", lambda *args, **kwargs: None)
 
     chain = DownloadChain.__new__(DownloadChain)
+    chain.eventmanager = MagicMock()
+    chain.eventmanager.send_event.return_value = None
     chain.download_torrent = MagicMock(
         return_value=(b"torrent-content", "", ["A.Will.Eternal.S04E05.mkv"]),
     )
@@ -807,6 +821,8 @@ def test_download_single_records_failure_cooldown_when_downloader_rejects(monkey
     monkeypatch.setattr(download_module.eventmanager, "send_event", lambda *args, **kwargs: None)
 
     chain = DownloadChain.__new__(DownloadChain)
+    chain.eventmanager = MagicMock()
+    chain.eventmanager.send_event.return_value = None
     error_msg = "添加种子任务失败：无法读取种子文件"
     chain.download = MagicMock(return_value=("qb", None, "Original", error_msg))
     chain.post_message = MagicMock()
@@ -943,6 +959,8 @@ def test_batch_download_skips_failed_subscription_resource_and_tries_next(monkey
     )
 
     chain = DownloadChain.__new__(DownloadChain)
+    chain.eventmanager = MagicMock()
+    chain.eventmanager.send_event.return_value = None
     chain.download_single = MagicMock(return_value="hash")
 
     downloads, lefts = chain.batch_download(
@@ -965,6 +983,8 @@ def test_batch_download_accepts_complete_coverage_when_files_cover_target_range(
     monkeypatch.setattr(download_module.eventmanager, "send_event", lambda *args, **kwargs: None)
 
     chain = DownloadChain.__new__(DownloadChain)
+    chain.eventmanager = MagicMock()
+    chain.eventmanager.send_event.return_value = None
     chain.download_torrent = MagicMock(return_value=(b"torrent-content", "", ["demo.mkv"]))
     chain.download_single = MagicMock(return_value="hash")
 
@@ -997,6 +1017,8 @@ def test_batch_download_rejects_complete_coverage_when_files_have_same_count_but
     monkeypatch.setattr(download_module.eventmanager, "send_event", lambda *args, **kwargs: None)
 
     chain = DownloadChain.__new__(DownloadChain)
+    chain.eventmanager = MagicMock()
+    chain.eventmanager.send_event.return_value = None
     chain.download_torrent = MagicMock(return_value=(b"torrent-content", "", ["demo.mkv"]))
     chain.download_single = MagicMock(return_value="hash")
 
@@ -1029,6 +1051,8 @@ def test_batch_download_accepts_complete_coverage_when_title_episodes_cover_targ
     monkeypatch.setattr(download_module.eventmanager, "send_event", lambda *args, **kwargs: None)
 
     chain = DownloadChain.__new__(DownloadChain)
+    chain.eventmanager = MagicMock()
+    chain.eventmanager.send_event.return_value = None
     chain.download_torrent = MagicMock()
     chain.download_single = MagicMock(return_value="hash")
 
@@ -1062,6 +1086,8 @@ def test_batch_download_rejects_complete_coverage_when_title_episodes_are_partia
     monkeypatch.setattr(download_module.eventmanager, "send_event", lambda *args, **kwargs: None)
 
     chain = DownloadChain.__new__(DownloadChain)
+    chain.eventmanager = MagicMock()
+    chain.eventmanager.send_event.return_value = None
     chain.download_torrent = MagicMock()
     chain.download_single = MagicMock(return_value="hash")
 
@@ -1095,6 +1121,8 @@ def test_batch_download_complete_coverage_ignores_allowed_episode_narrowing(monk
     monkeypatch.setattr(download_module.eventmanager, "send_event", lambda *args, **kwargs: None)
 
     chain = DownloadChain.__new__(DownloadChain)
+    chain.eventmanager = MagicMock()
+    chain.eventmanager.send_event.return_value = None
     chain.download_torrent = MagicMock()
     chain.download_single = MagicMock(return_value="hash")
 
@@ -1129,6 +1157,8 @@ def test_batch_download_keeps_count_check_without_complete_coverage(monkeypatch)
     monkeypatch.setattr(download_module.eventmanager, "send_event", lambda *args, **kwargs: None)
 
     chain = DownloadChain.__new__(DownloadChain)
+    chain.eventmanager = MagicMock()
+    chain.eventmanager.send_event.return_value = None
     chain.download_torrent = MagicMock(return_value=(b"torrent-content", "", ["demo.mkv"]))
     chain.download_single = MagicMock(return_value="hash")
 

tests/test_music_plugin_recognize.py

@@ -4,7 +4,7 @@
 与 ChainBase 媒体识别插件补充（MediaRecognize / MusicMediaRecognize 链式事件）。
 """
 import asyncio
-from unittest.mock import AsyncMock, Mock, patch
+from unittest.mock import AsyncMock, MagicMock, Mock, patch
 
 from app.chain import ChainBase
 from app.chain.media import MediaChain
@@ -66,9 +66,11 @@ def test_music_recognize_help_sends_event_and_rematches(monkeypatch):
         "album": "叶惠美",
         "year": "2003",
     })
-    with patch("app.chain.media.eventmanager") as em:
+    # 事件经注入的 eventmanager 发送，直接替换实例依赖并保留断言能力
+    em = MagicMock()
     em.check.return_value = True
     em.send_event.return_value = event
+    monkeypatch.setattr(chain, "eventmanager", em)
     result = chain.recognize_by_meta(meta, media_source="musicbrainz")
 
     assert result is remote
@@ -101,8 +103,9 @@ def test_music_recognize_keeps_fallback_without_plugin(monkeypatch):
     fallback = _fallback_music(title="未知曲目")
     monkeypatch.setattr(chain, "recognize_media", Mock(return_value=fallback))
 
-    with patch("app.chain.media.eventmanager") as em:
+    em = MagicMock()
     em.check.return_value = False
+    monkeypatch.setattr(chain, "eventmanager", em)
     result = chain.recognize_by_meta(meta)
 
     assert result is fallback
@@ -122,9 +125,10 @@ def test_music_recognize_help_same_elements_keeps_fallback(monkeypatch):
         "name": "晴天",
         "artist": "周杰伦",
     })
-    with patch("app.chain.media.eventmanager") as em:
+    em = MagicMock()
     em.check.return_value = True
     em.send_event.return_value = event
+    monkeypatch.setattr(chain, "eventmanager", em)
     result = chain.recognize_by_meta(meta)
 
     assert result is fallback
@@ -143,9 +147,10 @@ def test_music_recognize_help_keeps_fallback_when_rematch_fails(monkeypatch):
         "name": "另一个晴天",
         "artist": "未知艺术家",
     })
-    with patch("app.chain.media.eventmanager") as em:
+    em = MagicMock()
     em.check.return_value = True
     em.send_event.return_value = event
+    monkeypatch.setattr(chain, "eventmanager", em)
     result = chain.recognize_by_meta(meta)
 
     assert result is fallback
@@ -169,9 +174,11 @@ def test_async_music_recognize_help(monkeypatch):
         "name": "晴天",
         "artist": "周杰伦",
     })
-    with patch("app.chain.media.eventmanager") as em:
+    # 事件经注入的 eventmanager 发送，直接替换实例依赖并保留断言能力
+    em = MagicMock()
     em.check.return_value = True
     em.async_send_event = AsyncMock(return_value=event)
+    monkeypatch.setattr(chain, "eventmanager", em)
     result = asyncio.run(chain.async_recognize_by_meta(meta))
 
     assert result is remote
@@ -193,10 +200,11 @@ def test_plugin_first_keeps_fallback_when_help_unidentified(monkeypatch):
         "title": "晴天",
         "name": "另一个晴天",
     })
-    with patch("app.chain.media.eventmanager") as em, \
+    em = MagicMock()
-            patch("app.runtime.config.settings.RECOGNIZE_PLUGIN_FIRST", True):
     em.check.return_value = True
     em.send_event.return_value = event
+    monkeypatch.setattr(chain, "eventmanager", em)
+    with patch("app.runtime.config.settings.RECOGNIZE_PLUGIN_FIRST", True):
         result = chain.recognize_by_meta(meta)
 
     assert result is fallback