修复暂停时没有中断的问题
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@@ -16,6 +16,9 @@ class DownloadExecutor {
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this.progressManager = progressManager;
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this.historyManager = historyManager;
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this.downloadService = downloadService; // 添加下载服务引用
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// 存储每个任务的中断控制器
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this.abortControllers = new Map();
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}
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/**
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@@ -23,6 +26,10 @@ class DownloadExecutor {
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*/
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async executeArtworkDownload(task, images, size, artworkDir, artwork) {
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try {
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// 为这个任务创建中断控制器
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const abortController = new AbortController();
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this.abortControllers.set(task.id, abortController);
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const results = [];
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for (let index = 0; index < images.length; index++) {
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@@ -33,6 +40,8 @@ class DownloadExecutor {
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// 检查是否应该暂停
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if (this.shouldPause(task.id)) {
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logger.info('任务已暂停,停止下载:', task.id);
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// 中断当前下载
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abortController.abort();
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// 确保任务状态为暂停
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task.status = 'paused';
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await this.taskManager.saveTasks();
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@@ -100,8 +109,8 @@ class DownloadExecutor {
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// 确保目录存在
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await this.fileManager.ensureDirectory(path.dirname(filePath));
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// 下载文件并等待完成
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await this.fileManager.downloadFile(imageUrl, filePath);
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// 下载文件并等待完成,传入中断控制器
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await this.fileManager.downloadFile(imageUrl, filePath, abortController);
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// 验证下载的文件完整性,传入期望的MIME类型
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const expectedMimeType = this.getMimeTypeFromUrl(imageUrl);
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@@ -232,6 +241,9 @@ class DownloadExecutor {
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task.end_time = new Date();
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await this.taskManager.saveTasks();
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this.progressManager.notifyProgressUpdate(task.id, task);
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} finally {
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// 清理中断控制器
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this.abortControllers.delete(task.id);
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}
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}
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@@ -612,6 +624,19 @@ class DownloadExecutor {
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return { success: true };
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}
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/**
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* 中断指定任务的下载
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* @param {string} taskId - 任务ID
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*/
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abortTask(taskId) {
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const abortController = this.abortControllers.get(taskId);
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if (abortController) {
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logger.info('中断任务下载', { taskId });
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abortController.abort();
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this.abortControllers.delete(taskId);
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}
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}
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/**
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* 检查任务是否应该暂停
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*/
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@@ -239,6 +239,9 @@ class DownloadService {
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// 更新任务状态为取消中,防止并发操作
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await this.taskManager.updateTask(taskId, { status: 'cancelling' });
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// 立即中断正在进行的下载
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this.downloadExecutor.abortTask(taskId);
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// 清理未完成的文件
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await this.cleanupIncompleteFiles(task);
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@@ -288,6 +291,9 @@ class DownloadService {
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// 更新任务状态为暂停中,防止并发操作
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await this.taskManager.updateTask(taskId, { status: 'pausing' });
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// 立即中断正在进行的下载
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this.downloadExecutor.abortTask(taskId);
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// 清理未完成的文件
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await this.cleanupIncompleteFiles(task);
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@@ -262,7 +262,7 @@ class FileManager {
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/**
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* 简单的文件下载方法
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*/
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async downloadFile(url, filePath) {
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async downloadFile(url, filePath, abortController = null) {
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const downloadConfig = await this.getDownloadConfig();
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const maxRetries = downloadConfig.retryAttempts;
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let lastError = null;
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@@ -272,6 +272,11 @@ class FileManager {
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let response = null;
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try {
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// 检查是否已被中断
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if (abortController && abortController.signal.aborted) {
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throw new Error('下载已被中断');
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}
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// 使用增强的文件工具类确保目录存在
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const dirPath = path.dirname(filePath);
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const dirCreated = await FileUtils.safeEnsureDirEnhanced(dirPath);
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@@ -288,6 +293,11 @@ class FileManager {
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}
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}
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// 再次检查是否已被中断
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if (abortController && abortController.signal.aborted) {
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throw new Error('下载已被中断');
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}
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response = await axios({
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method: 'GET',
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url: url,
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@@ -296,7 +306,8 @@ class FileManager {
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'Referer': 'https://www.pixiv.net/',
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'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36'
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},
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timeout: downloadConfig.timeout
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timeout: downloadConfig.timeout,
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signal: abortController ? abortController.signal : undefined
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});
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// 使用增强的写入流创建方法
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@@ -315,6 +326,24 @@ class FileManager {
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}
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};
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// 监听中断信号
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if (abortController) {
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abortController.signal.addEventListener('abort', () => {
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if (isResolved) return;
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isResolved = true;
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logger.info(`下载被中断: ${filePath}`);
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cleanup();
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// 删除未完成的文件
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this.safeDeleteFile(filePath).catch(error => {
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logger.warn('删除被中断的文件失败', { filePath, error: error.message });
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});
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reject(new Error('下载被中断'));
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});
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}
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writer.on('finish', async () => {
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if (isResolved) return;
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isResolved = true;
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@@ -378,6 +407,9 @@ class FileManager {
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// 清理超时定时器
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writer.on('finish', () => clearTimeout(timeout));
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writer.on('error', () => clearTimeout(timeout));
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if (abortController) {
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abortController.signal.addEventListener('abort', () => clearTimeout(timeout));
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}
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});
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} catch (error) {
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@@ -391,7 +423,25 @@ class FileManager {
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lastError = error;
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// 处理文件系统错误
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// 首先检查是否是中断错误,如果是则直接抛出,不重试
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if (error.message === '下载已被中断' ||
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error.code === 'ERR_CANCELED' ||
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error.name === 'AbortError' ||
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(error.message && error.message.includes('canceled'))) {
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logger.error(`下载文件失败 (尝试 ${attempt}/${maxRetries}): ${filePath}`, {
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error: error.message,
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stack: error.stack,
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url,
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retryable: false,
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attempt,
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reason: 'download_interrupted'
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});
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throw error;
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}
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// 处理其他文件系统错误
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const errorResult = ErrorHandler.handleFileSystemError(error, filePath, 'download');
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logger.error(`下载文件失败 (尝试 ${attempt}/${maxRetries}): ${filePath}`, {
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