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"""
本地进度管理适配器
基于内存队列实现的进度管理适配器，适用于本地单实例场景。
"""
import asyncio
from collections import defaultdict
from datetime import datetime
from typing import Any, AsyncGenerator, Dict, List, Optional
from ..base import ProgressAdapter
class LocalProgressAdapter(ProgressAdapter):
"""
本地内存进度管理适配器
特点：
1. 使用内存字典存储最新进度
2. 使用 asyncio.Queue 实现订阅者模式
3. 支持多订阅者同时订阅同一任务
4. 与 AsyncTrainingManager 的进度推送机制兼容
注意：
- 进程重启后进度数据会丢失
- 仅适用于单实例部署
- 服务器模式应使用 RedisProgressAdapter
Example:
>>> adapter = LocalProgressAdapter()
>>> await adapter.update_progress("task-123", {
... "stage": "sovits_train",
... "progress": 0.5,
... "message": "Epoch 8/16"
... })
>>>
>>> # 订阅进度
>>> async for progress in adapter.subscribe("task-123"):
... print(f"{progress['stage']}: {progress['progress']*100:.1f}%")
"""
def __init__(self):
"""初始化本地进度适配器"""
# 存储每个任务的最新进度
self.progress_store: Dict[str, Dict[str, Any]] = {}
# 存储每个任务的订阅者队列列表
self.subscribers: Dict[str, List[asyncio.Queue]] = defaultdict(list)
# 锁，用于保护订阅者列表的并发访问
self._lock = asyncio.Lock()
async def update_progress(self, task_id: str, progress: Dict[str, Any]) -> None:
"""
更新进度
Args:
task_id: 任务ID
progress: 进度信息字典，可包含:
- type: 消息类型 ("progress", "log", "error", "heartbeat")
- stage: 当前阶段
- progress: 阶段进度 (0.0-1.0)
- overall_progress: 总体进度 (0.0-1.0)
- message: 进度消息
- status: 状态 ("running", "completed", "failed", "cancelled")
"""
# 添加时间戳
if "timestamp" not in progress:
progress["timestamp"] = datetime.utcnow().isoformat()
# 存储最新进度
self.progress_store[task_id] = progress
# 通知所有订阅者
async with self._lock:
if task_id in self.subscribers:
for queue in self.subscribers[task_id]:
try:
await queue.put(progress)
except asyncio.QueueFull:
# 队列满了，跳过（避免阻塞）
pass
async def get_progress(self, task_id: str) -> Optional[Dict[str, Any]]:
"""
获取当前进度
Args:
task_id: 任务ID
Returns:
最新进度信息，不存在则返回 None
"""
return self.progress_store.get(task_id)
async def subscribe(self, task_id: str) -> AsyncGenerator[Dict[str, Any], None]:
"""
订阅进度更新
创建一个异步生成器，持续接收指定任务的进度更新。
当任务进入终态（completed, failed, cancelled）时自动结束。
Args:
task_id: 任务ID
Yields:
进度信息字典
Example:
>>> async for progress in adapter.subscribe("task-123"):
... print(progress)
... if progress.get("status") == "completed":
... break
"""
# 创建订阅者队列
queue: asyncio.Queue = asyncio.Queue(maxsize=100)
async with self._lock:
self.subscribers[task_id].append(queue)
try:
# 首先发送当前进度（如果有）
current = self.progress_store.get(task_id)
if current:
yield current
# 如果已经是终态，直接返回
if current.get("status") in ("completed", "failed", "cancelled"):
return
# 持续接收更新
while True:
try:
# 30秒超时，发送心跳
progress = await asyncio.wait_for(queue.get(), timeout=30.0)
yield progress
# 检查是否为终态
if progress.get("status") in ("completed", "failed", "cancelled"):
break
except asyncio.TimeoutError:
# 发送心跳保持连接
yield {
"type": "heartbeat",
"timestamp": datetime.utcnow().isoformat(),
}
finally:
# 清理订阅者
async with self._lock:
if task_id in self.subscribers:
try:
self.subscribers[task_id].remove(queue)
except ValueError:
pass
# 如果没有订阅者了，清理列表
if not self.subscribers[task_id]:
del self.subscribers[task_id]
async def clear_progress(self, task_id: str) -> None:
"""
清除任务进度数据
Args:
task_id: 任务ID
"""
self.progress_store.pop(task_id, None)
async with self._lock:
self.subscribers.pop(task_id, None)
async def get_subscriber_count(self, task_id: str) -> int:
"""
获取任务的订阅者数量
Args:
task_id: 任务ID
Returns:
订阅者数量
"""
async with self._lock:
return len(self.subscribers.get(task_id, []))
async def broadcast_to_all(self, message: Dict[str, Any]) -> int:
"""
向所有任务的订阅者广播消息
用于系统级通知，如服务器关闭警告等。
Args:
message: 消息内容
Returns:
发送成功的订阅者数量
"""
if "timestamp" not in message:
message["timestamp"] = datetime.utcnow().isoformat()
count = 0
async with self._lock:
for task_id, queues in self.subscribers.items():
for queue in queues:
try:
await queue.put(message)
count += 1
except asyncio.QueueFull:
pass
return count
def get_active_tasks(self) -> List[str]:
"""
获取有活跃订阅者的任务列表
Returns:
任务ID列表
"""
return list(self.subscribers.keys())
def get_stats(self) -> Dict[str, Any]:
"""
获取适配器统计信息
Returns:
统计信息字典
"""
total_subscribers = sum(
len(queues) for queues in self.subscribers.values()
)
return {
"stored_progress_count": len(self.progress_store),
"active_tasks": len(self.subscribers),
"total_subscribers": total_subscribers,
}
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