723 lines
25 KiB
Rust
723 lines
25 KiB
Rust
use serde::{Deserialize, Serialize};
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use std::collections::VecDeque;
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use std::sync::Arc;
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use std::sync::atomic::{AtomicBool, AtomicUsize, AtomicU64, Ordering};
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use std::time::{Duration, Instant};
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use tokio::sync::{Mutex, Notify};
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use tokio::time::sleep;
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use tracing::{info, warn, error, debug};
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use uuid::Uuid;
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use image::GenericImageView;
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use crate::models::{AlbumIndex, CreateAlbum, CreateImage};
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/// 任务类型
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#[derive(Debug, Clone, PartialEq, Eq, Hash, Serialize, Deserialize)]
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pub enum TaskType {
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ThumbnailGeneration, // 缩略图生成
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AlbumImport, // 相册导入
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}
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/// 任务优先级
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#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord)]
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pub enum TaskPriority {
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High = 0, // 前端请求的缩略图
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Medium = 1, // 相册导入
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Low = 2, // 后台质量升级
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}
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/// 通用任务结构
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#[derive(Debug, Clone)]
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pub struct Task {
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pub id: Uuid,
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pub task_type: TaskType,
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pub priority: TaskPriority,
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pub created_at: Instant,
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pub data: TaskData,
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}
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/// 任务数据
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#[derive(Debug, Clone)]
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pub enum TaskData {
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ThumbnailGeneration {
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image_id: Uuid,
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original_data: Vec<u8>,
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},
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AlbumImport {
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album_path: String,
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album_data: Option<Vec<u8>>,
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},
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}
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/// 队列统计信息
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#[derive(Debug, Clone, Serialize, Deserialize)]
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pub struct QueueStats {
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pub pending_tasks: usize,
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pub active_tasks: usize,
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pub completed_tasks: usize,
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pub failed_tasks: usize,
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pub queue_size_limit: usize,
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pub is_paused: bool,
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pub task_type_stats: Vec<TaskTypeStats>,
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// HTTP请求频率信息
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pub request_frequency: f64,
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pub request_count: u64,
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}
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/// 任务类型统计
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#[derive(Debug, Clone, Serialize, Deserialize)]
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pub struct TaskTypeStats {
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pub task_type: TaskType,
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pub pending: usize,
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pub completed: usize,
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pub failed: usize,
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}
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/// 智能任务队列
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pub struct TaskQueue {
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queue: Mutex<VecDeque<Task>>,
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active_tasks: AtomicUsize,
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completed_tasks: AtomicUsize,
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failed_tasks: AtomicUsize,
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max_concurrent_tasks: usize,
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queue_size_limit: usize,
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is_paused: AtomicBool,
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notify: Notify,
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last_activity: Mutex<Instant>,
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// HTTP请求频率监控
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request_count: AtomicU64,
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last_request_time: Mutex<Instant>,
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request_window: Duration,
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// 配置阈值
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high_request_rate_threshold: f64,
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idle_request_rate_threshold: f64,
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}
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impl TaskQueue {
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pub fn new(max_concurrent_tasks: usize, queue_size_limit: usize, high_request_rate_threshold: f64, idle_request_rate_threshold: f64) -> Self {
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Self {
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queue: Mutex::new(VecDeque::new()),
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active_tasks: AtomicUsize::new(0),
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completed_tasks: AtomicUsize::new(0),
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failed_tasks: AtomicUsize::new(0),
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max_concurrent_tasks,
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queue_size_limit,
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is_paused: AtomicBool::new(false),
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notify: Notify::new(),
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last_activity: Mutex::new(Instant::now()),
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// HTTP请求频率监控
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request_count: AtomicU64::new(0),
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last_request_time: Mutex::new(Instant::now()),
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request_window: Duration::from_secs(10),
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// 配置阈值
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high_request_rate_threshold,
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idle_request_rate_threshold,
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}
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}
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/// 添加任务到队列
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pub async fn add_task(&self, task: Task) -> Result<(), String> {
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let mut queue = self.queue.lock().await;
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// 检查队列是否已满
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if queue.len() >= self.queue_size_limit {
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return Err("队列已满，无法添加新任务".to_string());
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}
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// 检查是否已有相同ID的任务
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if queue.iter().any(|t| t.id == task.id) {
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return Err("该任务已在队列中".to_string());
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}
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// 根据优先级插入任务（高优先级在前）
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let insert_position = queue
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.iter()
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.position(|t| t.priority > task.priority)
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.unwrap_or(queue.len());
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queue.insert(insert_position, task);
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// 更新最后活动时间
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*self.last_activity.lock().await = Instant::now();
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// 通知工作线程
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self.notify.notify_one();
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debug!("任务已添加到队列，当前队列大小: {}", queue.len());
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Ok(())
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}
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/// 从队列获取下一个任务
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pub async fn next_task(&self) -> Option<Task> {
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// 检查是否暂停
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if self.is_paused.load(Ordering::Acquire) {
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return None;
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}
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// 检查并发任务数量
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if self.active_tasks.load(Ordering::Acquire) >= self.max_concurrent_tasks {
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return None;
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}
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let mut queue = self.queue.lock().await;
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if let Some(task) = queue.pop_front() {
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self.active_tasks.fetch_add(1, Ordering::Release);
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Some(task)
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} else {
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None
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}
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}
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/// 标记任务完成
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pub fn task_completed(&self, success: bool) {
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self.active_tasks.fetch_sub(1, Ordering::Release);
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if success {
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self.completed_tasks.fetch_add(1, Ordering::Release);
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} else {
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self.failed_tasks.fetch_add(1, Ordering::Release);
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}
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}
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/// 暂停队列处理
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pub fn pause(&self) {
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self.is_paused.store(true, Ordering::Release);
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info!("任务队列已暂停");
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}
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/// 恢复队列处理
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pub fn resume(&self) {
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self.is_paused.store(false, Ordering::Release);
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self.notify.notify_one();
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info!("任务队列已恢复");
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}
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/// 记录HTTP请求（在每次HTTP请求处理时调用）
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pub async fn record_http_request(&self) {
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let now = Instant::now();
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let mut last_request_time = self.last_request_time.lock().await;
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// 如果距离上次请求时间超过了窗口时间，重置计数器
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if now.duration_since(*last_request_time) > self.request_window {
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self.request_count.store(0, Ordering::Release);
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}
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// 增加请求计数
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self.request_count.fetch_add(1, Ordering::Release);
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*last_request_time = now;
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}
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/// 获取当前请求频率（请求数/秒）
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pub fn get_request_frequency(&self) -> f64 {
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let request_count = self.request_count.load(Ordering::Acquire) as f64;
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let window_seconds = self.request_window.as_secs_f64();
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if window_seconds > 0.0 {
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request_count / window_seconds
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} else {
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0.0
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}
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}
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/// 检查服务器负载是否过高（基于HTTP请求频率）
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pub async fn is_server_busy(&self) -> bool {
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let request_frequency = self.get_request_frequency();
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// 基于HTTP请求频率判断业务繁忙度
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// 高请求频率（超过配置阈值）时认为服务器繁忙
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let is_high_request_rate = request_frequency > self.high_request_rate_threshold;
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// 如果请求频率高，或者并发任务/队列大小超过阈值，认为服务器繁忙
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is_high_request_rate
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}
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/// 获取队列统计信息
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pub async fn get_stats(&self) -> QueueStats {
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let queue = self.queue.lock().await;
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// 按任务类型统计
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let mut type_stats = std::collections::HashMap::new();
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for task in queue.iter() {
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let stats = type_stats
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.entry(task.task_type.clone())
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.or_insert((0, 0, 0));
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stats.0 += 1; // pending
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}
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let task_type_stats = type_stats
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.into_iter()
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.map(|(task_type, (pending, completed, failed))| TaskTypeStats {
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task_type,
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pending,
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completed,
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failed,
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})
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.collect();
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QueueStats {
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pending_tasks: queue.len(),
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active_tasks: self.active_tasks.load(Ordering::Acquire),
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completed_tasks: self.completed_tasks.load(Ordering::Acquire),
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failed_tasks: self.failed_tasks.load(Ordering::Acquire),
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queue_size_limit: self.queue_size_limit,
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is_paused: self.is_paused.load(Ordering::Acquire),
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task_type_stats,
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// 添加请求频率信息
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request_frequency: self.get_request_frequency(),
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request_count: self.request_count.load(Ordering::Acquire),
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}
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}
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/// 清理过期的任务（超过一定时间的任务）
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pub async fn cleanup_expired_tasks(&self, max_age: Duration) {
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let mut queue = self.queue.lock().await;
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let now = Instant::now();
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let initial_len = queue.len();
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queue.retain(|task| now.duration_since(task.created_at) <= max_age);
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let removed_count = initial_len - queue.len();
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if removed_count > 0 {
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warn!("清理了 {} 个过期任务", removed_count);
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}
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}
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/// 等待队列变为空闲状态
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pub async fn wait_for_idle(&self, timeout: Duration) -> bool {
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let start = Instant::now();
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while start.elapsed() < timeout {
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sleep(Duration::from_millis(100)).await;
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}
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false
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}
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}
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/// 缩略图生成Worker
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pub struct ThumbnailWorker {
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queue: Arc<TaskQueue>,
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image_processor: Arc<crate::image_processor::ImageProcessor>,
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}
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impl ThumbnailWorker {
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pub fn new(
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queue: Arc<TaskQueue>,
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image_processor: Arc<crate::image_processor::ImageProcessor>,
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) -> Self {
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Self {
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queue,
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image_processor,
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}
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}
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/// 启动缩略图Worker
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pub async fn start(self) {
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info!("启动缩略图生成Worker");
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loop {
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// 检查队列中是否有任务
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if let Some(task) = self.queue.next_task().await {
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if matches!(task.task_type, TaskType::ThumbnailGeneration) {
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debug!("缩略图Worker开始处理任务: {:?}", task.id);
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let success = self.process_thumbnail_task(task).await;
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self.queue.task_completed(success);
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// 在处理完每个任务后检查服务器负载
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if self.queue.is_server_busy().await {
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info!("服务器负载较高，暂停队列处理");
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self.queue.pause();
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// 每30秒检查一次服务器状态，直到服务器不忙时恢复队列
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loop {
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tokio::time::sleep(Duration::from_secs(30)).await;
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if !self.queue.is_server_busy().await {
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info!("服务器负载恢复正常，恢复队列处理");
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self.queue.resume();
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break;
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}
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info!("服务器仍然繁忙，继续等待...");
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}
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}
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} else {
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// 如果不是缩略图任务，放回队列
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let mut queue = self.queue.queue.lock().await;
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queue.push_front(task);
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}
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} else {
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// 队列为空，等待新任务通知
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self.queue.notify.notified().await;
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}
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// 短暂休眠避免CPU占用过高
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sleep(Duration::from_millis(100)).await;
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}
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}
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/// 处理缩略图任务
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async fn process_thumbnail_task(&self, task: Task) -> bool {
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if let TaskData::ThumbnailGeneration {
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image_id,
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original_data,
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} = task.data
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{
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// 使用具体的错误处理，避免 Send trait 问题
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let result = self
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.image_processor
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.generate_thumbnail_from_memory(&original_data, &image_id.to_string())
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.await;
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match result {
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Ok(thumbnail_data) => {
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// 保存缩略图到文件
|
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let thumbnail_path = self
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.image_processor
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.config
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.thumbnails_dir
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.join(image_id.to_string());
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match tokio::fs::write(&thumbnail_path, &thumbnail_data).await {
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Ok(_) => {
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info!("✅ 缩略图生成成功: {:?}", image_id);
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true
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}
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Err(e) => {
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warn!("保存缩略图失败: {:?} - {}", image_id, e);
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false
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}
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}
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}
|
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Err(e) => {
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warn!("缩略图生成失败: {:?} - {:?}", image_id, e);
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false
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}
|
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}
|
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} else {
|
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warn!("任务类型不匹配，期望缩略图生成任务");
|
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false
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}
|
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}
|
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}
|
||
|
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/// 相册导入Worker
|
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pub struct AlbumImportWorker {
|
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queue: Arc<TaskQueue>,
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db: Arc<crate::database::Database>,
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config: crate::config::StorageConfig,
|
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}
|
||
|
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impl AlbumImportWorker {
|
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pub fn new(
|
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queue: Arc<TaskQueue>,
|
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db: Arc<crate::database::Database>,
|
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config: crate::config::StorageConfig,
|
||
) -> Self {
|
||
Self { queue, db, config }
|
||
}
|
||
|
||
/// 启动相册导入Worker
|
||
pub async fn start(self) {
|
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info!("启动相册导入Worker");
|
||
|
||
loop {
|
||
// 检查队列中是否有任务
|
||
if let Some(task) = self.queue.next_task().await {
|
||
if matches!(task.task_type, TaskType::AlbumImport) {
|
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debug!("相册导入Worker开始处理任务: {:?}", task.id);
|
||
|
||
let success = self.process_album_import_task(task).await;
|
||
self.queue.task_completed(success);
|
||
|
||
// 在处理完每个任务后检查服务器负载
|
||
if self.queue.is_server_busy().await {
|
||
info!("服务器负载较高，暂停队列处理");
|
||
self.queue.pause();
|
||
|
||
// 每30秒检查一次服务器状态，直到服务器不忙时恢复队列
|
||
loop {
|
||
tokio::time::sleep(Duration::from_secs(30)).await;
|
||
if !self.queue.is_server_busy().await {
|
||
info!("服务器负载恢复正常，恢复队列处理");
|
||
self.queue.resume();
|
||
break;
|
||
}
|
||
info!("服务器仍然繁忙，继续等待...");
|
||
}
|
||
}
|
||
} else {
|
||
// 如果不是相册导入任务，放回队列并减少active_tasks计数器
|
||
let mut queue = self.queue.queue.lock().await;
|
||
queue.push_front(task);
|
||
// 手动减少active_tasks计数器，因为任务没有被处理
|
||
self.queue.active_tasks.fetch_sub(1, Ordering::Release);
|
||
}
|
||
} else {
|
||
// 队列为空，等待新任务通知
|
||
self.queue.notify.notified().await;
|
||
}
|
||
|
||
// 短暂休眠避免CPU占用过高
|
||
sleep(Duration::from_millis(100)).await;
|
||
}
|
||
}
|
||
|
||
/// 处理相册导入任务
|
||
async fn process_album_import_task(&self, task: Task) -> bool {
|
||
if let TaskData::AlbumImport {
|
||
album_path,
|
||
album_data: _,
|
||
} = task.data
|
||
{
|
||
info!("开始处理相册导入任务: {}", album_path);
|
||
|
||
// 将相对路径与images_dir组合成完整路径
|
||
let full_path = std::path::Path::new(&self.config.images_dir).join(&album_path);
|
||
|
||
// 检查相册文件夹是否存在
|
||
if !full_path.exists() {
|
||
error!("相册文件夹不存在: {}", full_path.display());
|
||
return false;
|
||
}
|
||
|
||
// 导入单个相册
|
||
match self.import_single_album(&album_path, &full_path).await {
|
||
Ok(count) => {
|
||
info!("相册导入成功: {} (导入 {} 张图片)", album_path, count);
|
||
true
|
||
}
|
||
Err(e) => {
|
||
error!("相册导入失败: {} - {}", album_path, e);
|
||
false
|
||
}
|
||
}
|
||
} else {
|
||
warn!("任务类型不匹配，期望相册导入任务");
|
||
false
|
||
}
|
||
}
|
||
|
||
/// 导入单个相册（按照import.rs中的逻辑实现）
|
||
async fn import_single_album(&self, folder_name: &str, path: &std::path::Path) -> Result<usize, Box<dyn std::error::Error + Send + Sync>> {
|
||
info!("开始导入相册: {}", folder_name);
|
||
|
||
// 读取index.json文件
|
||
let index_file_path = path.join("index.json");
|
||
let album_title = if index_file_path.exists() {
|
||
match std::fs::read_to_string(&index_file_path) {
|
||
Ok(content) => {
|
||
match serde_json::from_str::<AlbumIndex>(&content) {
|
||
Ok(index) => {
|
||
info!("从index.json读取相册标题: {}", index.title);
|
||
index.title
|
||
}
|
||
Err(e) => {
|
||
warn!("解析index.json失败: {}, 使用文件夹名作为标题", e);
|
||
folder_name.to_string()
|
||
}
|
||
}
|
||
}
|
||
Err(e) => {
|
||
warn!("读取index.json失败: {}, 使用文件夹名作为标题", e);
|
||
folder_name.to_string()
|
||
}
|
||
}
|
||
} else {
|
||
info!("index.json不存在，使用文件夹名作为标题");
|
||
folder_name.to_string()
|
||
};
|
||
|
||
// 创建新相册
|
||
let new_album = CreateAlbum {
|
||
title: album_title.clone(),
|
||
document: folder_name.to_string(),
|
||
description: Some(format!("从文件夹 {} 自动导入的相册", folder_name)),
|
||
};
|
||
|
||
let album_id = self.db.create_album(new_album).await?;
|
||
info!("创建相册: {} (ID: {})", album_title, album_id);
|
||
|
||
// 读取图片URL列表（如果有index.json）
|
||
let image_urls = if index_file_path.exists() {
|
||
match std::fs::read_to_string(&index_file_path) {
|
||
Ok(content) => {
|
||
match serde_json::from_str::<AlbumIndex>(&content) {
|
||
Ok(index) => {
|
||
info!("从index.json读取到 {} 个图片URL", index.images.len());
|
||
Some(index.images)
|
||
}
|
||
Err(_) => None
|
||
}
|
||
}
|
||
Err(_) => None
|
||
}
|
||
} else {
|
||
None
|
||
};
|
||
|
||
// 快速扫描图片文件
|
||
let image_files = self.scan_image_files(path, folder_name)?;
|
||
|
||
if image_files.is_empty() {
|
||
info!("相册 {} 中没有找到图片文件", folder_name);
|
||
return Ok(0);
|
||
}
|
||
|
||
info!("发现 {} 张图片，开始处理...", image_files.len());
|
||
|
||
// 并行处理图片信息获取
|
||
let mut image_tasks = Vec::new();
|
||
|
||
for (index, (filename, image_path)) in image_files.iter().enumerate() {
|
||
let image_url = image_urls.as_ref().and_then(|urls| {
|
||
if urls.len() > index {
|
||
Some(urls[index].clone())
|
||
} else {
|
||
None
|
||
}
|
||
});
|
||
|
||
let filename_clone = filename.clone();
|
||
let image_path_clone = image_path.clone();
|
||
let album_id_clone = album_id;
|
||
let folder_name_clone = folder_name.to_string();
|
||
|
||
let task = tokio::task::spawn_blocking(move || {
|
||
// 在阻塞线程中处理图片信息
|
||
let (file_size, width, height) = match AlbumImportWorker::get_image_info_static(&image_path_clone) {
|
||
Ok(info) => info,
|
||
Err(e) => {
|
||
eprintln!("获取图片信息失败: {} - {}", image_path_clone.display(), e);
|
||
(0, 0, 0)
|
||
}
|
||
};
|
||
|
||
CreateImage {
|
||
album_id: album_id_clone,
|
||
filename: format!("{}/{}", folder_name_clone, filename_clone),
|
||
original_url: image_url,
|
||
title: Some(format!("图片 {}", index + 1)),
|
||
description: Some(format!("从文件夹 {} 导入的图片", folder_name_clone)),
|
||
file_size,
|
||
width,
|
||
height,
|
||
mime_type: match image_path_clone.extension().and_then(|s| s.to_str()).unwrap_or("jpg").to_lowercase().as_str() {
|
||
"jpg" | "jpeg" => "image/jpeg".to_string(),
|
||
"png" => "image/png".to_string(),
|
||
"gif" => "image/gif".to_string(),
|
||
"webp" => "image/webp".to_string(),
|
||
"bmp" => "image/bmp".to_string(),
|
||
_ => "image/jpeg".to_string(),
|
||
},
|
||
}
|
||
});
|
||
|
||
image_tasks.push(task);
|
||
}
|
||
|
||
// 收集所有图片信息
|
||
let mut images_to_insert = Vec::new();
|
||
for task in image_tasks {
|
||
match task.await {
|
||
Ok(image) => images_to_insert.push(image),
|
||
Err(e) => error!("图片处理任务失败: {}", e),
|
||
}
|
||
}
|
||
|
||
// 批量插入图片
|
||
if !images_to_insert.is_empty() {
|
||
match self.db.add_images(images_to_insert).await {
|
||
Ok(ids) => {
|
||
info!("成功导入 {} 张图片到相册 {}", ids.len(), folder_name);
|
||
|
||
// 更新相册图片数量
|
||
if let Err(e) = self.db.update_album_image_count(album_id).await {
|
||
error!("更新相册图片数量失败: {}", e);
|
||
}
|
||
|
||
Ok(ids.len())
|
||
}
|
||
Err(e) => {
|
||
error!("批量插入图片失败: {}", e);
|
||
Ok(0)
|
||
}
|
||
}
|
||
} else {
|
||
info!("没有图片需要插入到相册 {}", folder_name);
|
||
Ok(0)
|
||
}
|
||
}
|
||
|
||
/// 扫描图片文件（从import.rs迁移）
|
||
fn scan_image_files(&self, path: &std::path::Path, _folder_name: &str) -> Result<Vec<(String, std::path::PathBuf)>, Box<dyn std::error::Error + Send + Sync>> {
|
||
let mut image_files = Vec::new();
|
||
|
||
for entry in std::fs::read_dir(path)? {
|
||
let entry = entry?;
|
||
let file_path = entry.path();
|
||
|
||
if file_path.is_file() {
|
||
if let Some(extension) = file_path.extension().and_then(|s| s.to_str()) {
|
||
let ext_lower = extension.to_lowercase();
|
||
if ext_lower == "jpg" || ext_lower == "jpeg" || ext_lower == "png" ||
|
||
ext_lower == "gif" || ext_lower == "webp" || ext_lower == "bmp" {
|
||
|
||
if let Some(filename) = file_path.file_name().and_then(|s| s.to_str()) {
|
||
image_files.push((filename.to_string(), file_path));
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
Ok(image_files)
|
||
}
|
||
|
||
|
||
/// 静态方法：获取图片信息（用于spawn_blocking）
|
||
fn get_image_info_static(image_path: &std::path::Path) -> Result<(i64, i32, i32), Box<dyn std::error::Error + Send + Sync>> {
|
||
let metadata = std::fs::metadata(image_path)?;
|
||
let file_size = metadata.len() as i64;
|
||
|
||
// 使用image库获取图片尺寸
|
||
let img = image::open(image_path)?;
|
||
let (width, height) = img.dimensions();
|
||
|
||
Ok((file_size, width as i32, height as i32))
|
||
}
|
||
}
|
||
|
||
/// 任务工厂 - 用于创建不同类型的任务
|
||
pub struct TaskFactory;
|
||
|
||
impl TaskFactory {
|
||
/// 创建缩略图生成任务
|
||
pub fn create_thumbnail_task(
|
||
image_id: Uuid,
|
||
original_data: Vec<u8>,
|
||
priority: TaskPriority,
|
||
) -> Task {
|
||
Task {
|
||
id: Uuid::new_v4(),
|
||
task_type: TaskType::ThumbnailGeneration,
|
||
priority,
|
||
created_at: Instant::now(),
|
||
data: TaskData::ThumbnailGeneration {
|
||
image_id,
|
||
original_data,
|
||
},
|
||
}
|
||
}
|
||
|
||
/// 创建相册导入任务
|
||
pub fn create_album_import_task(album_path: String, album_data: Option<Vec<u8>>) -> Task {
|
||
Task {
|
||
id: Uuid::new_v4(),
|
||
task_type: TaskType::AlbumImport,
|
||
priority: TaskPriority::Medium,
|
||
created_at: Instant::now(),
|
||
data: TaskData::AlbumImport {
|
||
album_path,
|
||
album_data,
|
||
},
|
||
}
|
||
}
|
||
} |