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import json
import os
import time
import zipfile
from pathlib import Path
from typing import Dict, Iterable, Sequence
import numpy as np
STATUS_FIELDS = [
"sign_language",
"title",
"duration_sec",
"start_sec",
"end_sec",
"subtitle_languages",
"subtitle_dir_path",
"subtitle_en_source",
"raw_video_path",
"raw_metadata_path",
"metadata_status",
"subtitle_status",
"download_status",
"process_status",
"upload_status",
"local_cleanup_status",
"archive_name",
"last_error",
"updated_at",
]
def _lock_path(stats_path: Path) -> Path:
return stats_path.with_suffix(stats_path.suffix + ".lock")
def processed_complete_counter_path(stats_path: Path) -> Path:
return stats_path.parent / "processed_complete.count"
def _counter_lock_path(counter_path: Path) -> Path:
return counter_path.with_suffix(counter_path.suffix + ".lock")
def read_processed_complete_counter(counter_path: Path) -> int:
if not counter_path.exists():
return 0
try:
return int(counter_path.read_text(encoding="utf-8").strip() or "0")
except Exception:
return 0
def write_processed_complete_counter(counter_path: Path, value: int) -> int:
counter_path.parent.mkdir(parents=True, exist_ok=True)
normalized = max(0, int(value))
tmp_path = counter_path.parent / f".{counter_path.name}.{os.getpid()}.tmp"
try:
tmp_path.write_text(f"{normalized}\n", encoding="utf-8")
os.replace(tmp_path, counter_path)
finally:
if tmp_path.exists():
tmp_path.unlink(missing_ok=True)
return normalized
def adjust_processed_complete_counter(counter_path: Path, delta: int) -> int:
lock_path = _counter_lock_path(counter_path)
lock_path.parent.mkdir(parents=True, exist_ok=True)
with lock_path.open("a+", encoding="utf-8") as handle:
fcntl.flock(handle.fileno(), fcntl.LOCK_EX)
try:
current = read_processed_complete_counter(counter_path)
return write_processed_complete_counter(counter_path, current + int(delta))
finally:
fcntl.flock(handle.fileno(), fcntl.LOCK_UN)
def _load_stats_unlocked(stats_path: Path) -> Dict[str, Dict[str, str]]:
if not stats_path.exists() or stats_path.stat().st_size == 0:
return {}
stats: Dict[str, Dict[str, str]] = {}
with np.load(stats_path, allow_pickle=True) as data:
video_ids = [str(item) for item in data.get("video_ids", np.asarray([], dtype=object)).tolist()]
for index, video_id in enumerate(video_ids):
record = {}
for field in STATUS_FIELDS:
values = data.get(field)
record[field] = str(values[index]) if values is not None and index < len(values) else ""
stats[video_id] = record
return stats
def load_stats(stats_path: Path, retries: int = 8, retry_delay: float = 0.2) -> Dict[str, Dict[str, str]]:
if not stats_path.exists():
return {}
lock_path = _lock_path(stats_path)
lock_path.parent.mkdir(parents=True, exist_ok=True)
last_error: Exception | None = None
for _ in range(retries):
with lock_path.open("a+", encoding="utf-8") as handle:
fcntl.flock(handle.fileno(), fcntl.LOCK_SH)
try:
return _load_stats_unlocked(stats_path)
except (EOFError, ValueError, OSError, zipfile.BadZipFile) as exc:
last_error = exc
finally:
fcntl.flock(handle.fileno(), fcntl.LOCK_UN)
time.sleep(retry_delay)
if last_error is not None:
raise last_error
return {}
def save_stats(stats_path: Path, stats: Dict[str, Dict[str, str]]) -> None:
stats_path.parent.mkdir(parents=True, exist_ok=True)
video_ids = sorted(stats)
payload = {"video_ids": np.asarray(video_ids, dtype=object)}
for field in STATUS_FIELDS:
payload[field] = np.asarray([stats[video_id].get(field, "") for video_id in video_ids], dtype=object)
tmp_path = stats_path.parent / f".{stats_path.stem}.{os.getpid()}.tmp.npz"
try:
np.savez(tmp_path, **payload)
os.replace(tmp_path, stats_path)
finally:
if tmp_path.exists():
tmp_path.unlink(missing_ok=True)
def ensure_record(stats: Dict[str, Dict[str, str]], video_id: str) -> Dict[str, str]:
if video_id not in stats:
stats[video_id] = {field: "" for field in STATUS_FIELDS}
return stats[video_id]
def update_video_stats(stats_path: Path, video_id: str, **updates: str) -> Dict[str, str]:
lock_path = _lock_path(stats_path)
lock_path.parent.mkdir(parents=True, exist_ok=True)
with lock_path.open("a+", encoding="utf-8") as handle:
fcntl.flock(handle.fileno(), fcntl.LOCK_EX)
stats = _load_stats_unlocked(stats_path)
record = ensure_record(stats, video_id)
for key, value in updates.items():
if key in STATUS_FIELDS:
record[key] = "" if value is None else str(value)
save_stats(stats_path, stats)
fcntl.flock(handle.fileno(), fcntl.LOCK_UN)
return dict(record)
def update_many_video_stats(stats_path: Path, video_ids: Iterable[str], **updates: str) -> None:
lock_path = _lock_path(stats_path)
lock_path.parent.mkdir(parents=True, exist_ok=True)
with lock_path.open("a+", encoding="utf-8") as handle:
fcntl.flock(handle.fileno(), fcntl.LOCK_EX)
stats = _load_stats_unlocked(stats_path)
for video_id in video_ids:
record = ensure_record(stats, video_id)
for key, value in updates.items():
if key in STATUS_FIELDS:
record[key] = "" if value is None else str(value)
save_stats(stats_path, stats)
fcntl.flock(handle.fileno(), fcntl.LOCK_UN)
def update_many_video_stats_with_retry(stats_path: Path, video_ids: Iterable[str], retries: int = 8, retry_delay: float = 0.2, **updates: str) -> None:
last_error: Exception | None = None
for _ in range(retries):
try:
update_many_video_stats(stats_path, video_ids, **updates)
return
except (EOFError, ValueError, OSError, zipfile.BadZipFile) as exc:
last_error = exc
time.sleep(retry_delay)
if last_error is not None:
raise last_error
def journal_lock_path(journal_path: Path) -> Path:
return journal_path.with_suffix(journal_path.suffix + ".lock")
def sidecar_status_dir(stats_path: Path) -> Path:
return stats_path.parent / "video_status"
def sidecar_status_path(stats_path: Path, video_id: str) -> Path:
return sidecar_status_dir(stats_path) / f"{video_id}.jsonl"
def append_status_journal(journal_path: Path, video_ids: Sequence[str], **updates: str) -> None:
journal_path.parent.mkdir(parents=True, exist_ok=True)
payload = {
"video_ids": list(video_ids),
"updates": {key: ("" if value is None else str(value)) for key, value in updates.items()},
"recorded_at": time.strftime("%Y-%m-%d %H:%M:%S"),
}
lock_path = journal_lock_path(journal_path)
with lock_path.open("a+", encoding="utf-8") as handle:
fcntl.flock(handle.fileno(), fcntl.LOCK_EX)
try:
with journal_path.open("a", encoding="utf-8") as journal_handle:
journal_handle.write(json.dumps(payload, ensure_ascii=False) + "\n")
finally:
fcntl.flock(handle.fileno(), fcntl.LOCK_UN)
def append_status_sidecar(stats_path: Path, video_id: str, **updates: str) -> None:
payload = {
"video_ids": [video_id],
"updates": {key: ("" if value is None else str(value)) for key, value in updates.items()},
"recorded_at": time.strftime("%Y-%m-%d %H:%M:%S"),
}
sidecar_path = sidecar_status_path(stats_path, video_id)
sidecar_path.parent.mkdir(parents=True, exist_ok=True)
lock_path = journal_lock_path(sidecar_path)
with lock_path.open("a+", encoding="utf-8") as handle:
fcntl.flock(handle.fileno(), fcntl.LOCK_EX)
try:
with sidecar_path.open("a", encoding="utf-8") as sidecar_handle:
sidecar_handle.write(json.dumps(payload, ensure_ascii=False) + "\n")
finally:
fcntl.flock(handle.fileno(), fcntl.LOCK_UN)
def update_video_stats_best_effort(stats_path: Path, journal_path: Path, video_id: str, **updates: str) -> Dict[str, str]:
append_status_sidecar(stats_path, video_id, **updates)
return {key: ("" if value is None else str(value)) for key, value in updates.items() if key in STATUS_FIELDS}
def update_many_video_stats_best_effort(stats_path: Path, journal_path: Path, video_ids: Sequence[str], **updates: str) -> None:
try:
update_many_video_stats_with_retry(stats_path, video_ids, **updates)
except Exception:
append_status_journal(journal_path, video_ids, **updates)
def _apply_payloads_to_stats(stats_path: Path, payloads: Sequence[dict]) -> int:
if not payloads:
return 0
update_count = 0
stats_lock_path = _lock_path(stats_path)
stats_lock_path.parent.mkdir(parents=True, exist_ok=True)
with stats_lock_path.open("a+", encoding="utf-8") as stats_handle:
fcntl.flock(stats_handle.fileno(), fcntl.LOCK_EX)
try:
stats = _load_stats_unlocked(stats_path)
for payload in payloads:
video_ids = [str(item) for item in payload.get("video_ids", []) if str(item)]
updates = payload.get("updates", {})
if not video_ids or not isinstance(updates, dict):
continue
for video_id in video_ids:
record = ensure_record(stats, video_id)
for key, value in updates.items():
if key in STATUS_FIELDS:
record[key] = "" if value is None else str(value)
update_count += 1
if update_count:
save_stats(stats_path, stats)
finally:
fcntl.flock(stats_handle.fileno(), fcntl.LOCK_UN)
return update_count
def apply_status_journal_to_stats(stats_path: Path, journal_path: Path, remove_applied: bool = True) -> int:
payloads = []
if journal_path.exists() and journal_path.stat().st_size > 0:
lock_path = journal_lock_path(journal_path)
with lock_path.open("a+", encoding="utf-8") as handle:
fcntl.flock(handle.fileno(), fcntl.LOCK_EX)
try:
if journal_path.exists() and journal_path.stat().st_size > 0:
for line in journal_path.read_text(encoding="utf-8").splitlines():
if line.strip():
payloads.append(json.loads(line))
if remove_applied:
journal_path.unlink(missing_ok=True)
finally:
fcntl.flock(handle.fileno(), fcntl.LOCK_UN)
sidecar_dir = sidecar_status_dir(stats_path)
if sidecar_dir.exists():
for sidecar_path in sorted(sidecar_dir.glob("*.jsonl")):
lock_path = journal_lock_path(sidecar_path)
with lock_path.open("a+", encoding="utf-8") as handle:
fcntl.flock(handle.fileno(), fcntl.LOCK_EX)
try:
if sidecar_path.exists() and sidecar_path.stat().st_size > 0:
for line in sidecar_path.read_text(encoding="utf-8").splitlines():
if line.strip():
payloads.append(json.loads(line))
if remove_applied:
sidecar_path.unlink(missing_ok=True)
finally:
fcntl.flock(handle.fileno(), fcntl.LOCK_UN)
if remove_applied:
lock_path.unlink(missing_ok=True)
return _apply_payloads_to_stats(stats_path, payloads)
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