From 580e3c0d3bdac939b8d2ae74351461d320e5d60e Mon Sep 17 00:00:00 2001
From: Kevin <kevin@brighteng.org>
Date: Fri, 22 May 2026 11:17:20 +0800
Subject: [PATCH] remove dead code

---
 backend/app/baked/pipeline.py               |  3 +-
 backend/app/routers/recording_demo.py       |  5 ++++
 backend/app/services/video_batch_cleanup.py | 33 +++++++++++++++++++++
 backend/main.py                             | 12 ++++++--
 4 files changed, 50 insertions(+), 3 deletions(-)

diff --git a/backend/app/baked/pipeline.py b/backend/app/baked/pipeline.py
index abc5eeb..ffb7449 100644
--- a/backend/app/baked/pipeline.py
+++ b/backend/app/baked/pipeline.py
@@ -41,5 +41,6 @@ VOICE_FILE_LOG_PATH: str = "logs/voice_{surgery_id}.txt"
 VOICE_UPLOAD_MAX_BYTES: int = 10 * 1024 * 1024
 VOICE_CONFIRM_MAX_FAILED_PARSE_ROUNDS: int = 2
 
-# --- 非实时 batch 标注视频临时保留（小时）---
+# --- 非实时 batch 标注视频 / digest 级 pipeline 输入临时保留（小时）---
 VIDEO_BATCH_VIS_TTL_HOURS: int = 24
+VIDEO_BATCH_PIPELINE_INPUT_TTL_HOURS: int = 24
diff --git a/backend/app/routers/recording_demo.py b/backend/app/routers/recording_demo.py
index 01e68fc..ec8c96a 100644
--- a/backend/app/routers/recording_demo.py
+++ b/backend/app/routers/recording_demo.py
@@ -26,6 +26,7 @@ from app.baked import pipeline as bp
 from app.services.synthetic_rtsp import SyntheticRtspManager
 from app.services.video_batch_cleanup import (
     purge_batch_artifacts,
+    purge_expired_pipeline_inputs,
     purge_expired_visualizations,
     purge_surgery_batch_tree,
     stage_visualization_pending,
@@ -75,6 +76,10 @@ def _background_finalize_visualization(
             runner.root_dir,
             ttl_hours=float(bp.VIDEO_BATCH_VIS_TTL_HOURS),
         )
+        purge_expired_pipeline_inputs(
+            runner.root_dir,
+            ttl_hours=float(bp.VIDEO_BATCH_PIPELINE_INPUT_TTL_HOURS),
+        )
 
 
 class OfflineBatchResponse(BaseModel):
diff --git a/backend/app/services/video_batch_cleanup.py b/backend/app/services/video_batch_cleanup.py
index 275e36e..0bd908d 100644
--- a/backend/app/services/video_batch_cleanup.py
+++ b/backend/app/services/video_batch_cleanup.py
@@ -165,3 +165,36 @@ def purge_expired_visualizations(root_dir: Path, *, ttl_hours: float = 24.0) ->
     if removed:
         logger.info("video batch visualization TTL sweep removed {} file(s)", removed)
     return removed
+
+
+def purge_expired_pipeline_inputs(root_dir: Path, *, ttl_hours: float = 24.0) -> int:
+    """Delete ``cache/{digest}/input/pipeline*`` older than *ttl_hours*."""
+
+    cache_root = root_dir / "cache"
+    if not cache_root.is_dir():
+        return 0
+
+    cutoff = time.time() - float(ttl_hours) * 3600.0
+    removed = 0
+    for digest_dir in cache_root.iterdir():
+        if not digest_dir.is_dir():
+            continue
+        input_dir = digest_dir / "input"
+        if not input_dir.is_dir():
+            continue
+        for pipeline_file in input_dir.glob("pipeline*"):
+            if not pipeline_file.is_file():
+                continue
+            try:
+                if pipeline_file.stat().st_mtime >= cutoff:
+                    continue
+            except OSError:
+                continue
+            pipeline_file.unlink(missing_ok=True)
+            removed += 1
+            logger.info("purged expired pipeline input {}", pipeline_file)
+        _prune_empty_parents(input_dir, stop_at=cache_root)
+
+    if removed:
+        logger.info("video batch pipeline input TTL sweep removed {} file(s)", removed)
+    return removed
diff --git a/backend/main.py b/backend/main.py
index 890e60d..9387ef9 100644
--- a/backend/main.py
+++ b/backend/main.py
@@ -50,14 +50,22 @@ async def lifespan(app: FastAPI):
         "Database connection verified; ensure schema is applied with `alembic upgrade head` before serving traffic"
     )
     from app.baked import pipeline as bp
-    from app.services.video_batch_cleanup import purge_expired_visualizations
+    from app.services.video_batch_cleanup import (
+        purge_expired_pipeline_inputs,
+        purge_expired_visualizations,
+    )
     from app.algo_host.batch_service import BatchAlgorithmService
 
     repo_root = Path(__file__).resolve().parent
+    batch_root = BatchAlgorithmService(root_dir=repo_root / "logs" / "video_batch").root_dir
     purge_expired_visualizations(
-        BatchAlgorithmService(root_dir=repo_root / "logs" / "video_batch").root_dir,
+        batch_root,
         ttl_hours=float(bp.VIDEO_BATCH_VIS_TTL_HOURS),
     )
+    purge_expired_pipeline_inputs(
+        batch_root,
+        ttl_hours=float(bp.VIDEO_BATCH_PIPELINE_INPUT_TTL_HOURS),
+    )
     container = build_container(settings)
     app.state.container = container
     await container.start()