update
This commit is contained in:
@@ -8,7 +8,8 @@ import {
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SuspendedSessionInfo,
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} from '../types/ssh-suspend.types';
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import { temporaryLogStorageService, TemporaryLogStorageService } from './temporary-log-storage.service';
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import { clientStates } from '../websocket/state'; // +++ 导入 clientStates +++
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import { ClientState } from '../websocket/types';
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// clientStates 的直接访问已移除,因为takeOverMarkedSession现在从调用者接收所需信息
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/**
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* SshSuspendService 负责管理所有用户的挂起 SSH 会话的生命周期。
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@@ -37,48 +38,59 @@ export class SshSuspendService extends EventEmitter {
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}
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/**
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* 启动指定 SSH 会话的挂起模式。
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* @param userId 用户ID。
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* @param originalSessionId 原始会话ID。
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* @param sshClient SSH 客户端实例。
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* @param channel SSH 通道实例。
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* @param connectionName 连接名称。
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* @param connectionId 连接ID。
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* @param customSuspendName 可选的自定义挂起名称。
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* @returns Promise<string> 返回生成的 suspendSessionId。
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* 当一个被标记为待挂起的会话的 WebSocket 连接断开时,由此方法接管 SSH 资源。
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* @param details 包含接管所需的所有会话详细信息。
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* @returns Promise<string | null> 返回新生成的 suspendSessionId,如果无法接管则返回 null。
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*/
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async startSuspend(
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userId: number, // userId: string -> number
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originalSessionId: string,
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sshClient: Client,
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channel: ClientChannel, // 更新为 ClientChannel
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connectionName: string,
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connectionId: string,
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customSuspendName?: string,
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): Promise<string> {
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async takeOverMarkedSession(details: {
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userId: number;
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originalSessionId: string;
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sshClient: Client;
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channel: ClientChannel;
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connectionName: string;
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connectionId: string;
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logIdentifier: string;
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customSuspendName?: string;
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}): Promise<string | null> {
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const {
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userId,
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originalSessionId,
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sshClient,
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channel,
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connectionName,
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connectionId,
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logIdentifier,
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customSuspendName,
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} = details;
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// 检查 SSH client 和 channel 是否仍然可用
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// ClientChannel 有 readable 和 writable, Client 本身没有直接的此类属性
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// 如果 channel 不可读写,通常意味着底层连接有问题。
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if (!channel || !channel.readable || !channel.writable) {
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console.warn(`[用户: ${userId}] 尝试接管会话 ${originalSessionId} 时,SSH channel 已不可用 (readable: ${channel?.readable}, writable: ${channel?.writable})。将标记为已断开。`);
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// 确保如果 SSH 连接已经关闭,日志文件仍然保留,但不创建挂起条目。
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// SshSuspendService 不会管理这个“已经断开”的会话,但日志保留供用户清理。
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try { channel?.end(); } catch (e) { /* ignore */ }
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try { sshClient?.end(); } catch (e) { /* ignore */ }
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return null; // 无法接管
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}
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const suspendSessionId = uuidv4();
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const userSessions = this.getUserSessions(userId);
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// 在接管 channel 和 sshClient 前,移除它们上面可能存在的旧监听器
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// 这确保了 SshSuspendService 独占事件处理,避免旧的处理器(如 ssh.handler.ts 中的)继续发送数据或处理关闭事件
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channel.removeAllListeners('data');
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channel.removeAllListeners('close');
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channel.removeAllListeners('error');
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channel.removeAllListeners('end'); // ClientChannel 也有 'end' 事件
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channel.removeAllListeners('exit'); // ClientChannel 也有 'exit' 事件
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channel.removeAllListeners('end');
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channel.removeAllListeners('exit');
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// 对于 sshClient,移除监听器需要谨慎,特别是如果 sshClient 实例可能被多个 Shell共享(尽管在此应用中通常不这么做)
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// 假设这里的 sshClient 的生命周期与此 channel 紧密相关,或者是此 channel 的唯一父级。
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sshClient.removeAllListeners('error');
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sshClient.removeAllListeners('end');
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// sshClient.removeAllListeners('close'); // sshClient 本身没有 'close' 事件,通常是 'end' 或连接错误
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const tempLogPath = `./data/temp_suspended_ssh_logs/${suspendSessionId}.log`; // 路径相对于项目根目录
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const sessionDetails: SuspendSessionDetails = {
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sshClient,
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channel,
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tempLogPath,
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tempLogPath: logIdentifier, // 使用传入的日志标识符 (基于 originalSessionId)
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connectionName,
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connectionId,
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suspendStartTime: new Date().toISOString(),
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@@ -89,80 +101,66 @@ export class SshSuspendService extends EventEmitter {
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};
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userSessions.set(suspendSessionId, sessionDetails);
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console.log(`[用户: ${userId}] SSH会话 ${originalSessionId} 已被 SshSuspendService 接管 (新挂起ID: ${suspendSessionId})。日志文件标识: ${logIdentifier}`);
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// +++ 更新 ClientState 标记 +++
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const originalClientState = clientStates.get(originalSessionId);
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if (originalClientState) {
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originalClientState.isSuspendedByService = true;
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console.log(`[用户: ${userId}] ClientState for session ${originalSessionId} marked as suspended by service.`);
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} else {
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console.warn(`[用户: ${userId}] Could not find ClientState for original session ID ${originalSessionId} to mark as suspended.`);
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}
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// +++ 结束更新 ClientState 标记 +++
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console.log(`[用户: ${userId}] SSH会话 ${originalSessionId} (连接: ${connectionName}) 已启动挂起,ID: ${suspendSessionId}`);
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// 确保日志目录存在
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await this.logStorageService.ensureLogDirectoryExists();
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// 开始监听通道数据并写入日志
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channel.on('data', (data: Buffer) => {
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if (userSessions.get(suspendSessionId)?.backendSshStatus === 'hanging') {
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this.logStorageService.writeToLog(suspendSessionId, data.toString('utf-8')).catch(err => {
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console.error(`[用户: ${userId}, 会话: ${suspendSessionId}] 写入挂起日志失败:`, err);
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this.logStorageService.writeToLog(logIdentifier, data.toString('utf-8')).catch(err => {
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console.error(`[用户: ${userId}, 挂起ID: ${suspendSessionId}, 日志: ${logIdentifier}] 写入挂起日志失败:`, err);
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});
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}
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});
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const handleUnexpectedClose = () => {
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const handleSessionTermination = (reasonSuffix: string) => {
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const currentSession = userSessions.get(suspendSessionId);
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if (currentSession && currentSession.backendSshStatus === 'hanging') {
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const reason = 'SSH connection closed or errored.';
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console.warn(`[用户: ${userId}, 会话: ${suspendSessionId}] SSH 连接意外断开。原因: ${reason}`);
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const reason = `SSH connection ${reasonSuffix}.`;
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console.warn(`[用户: ${userId}, 挂起ID: ${suspendSessionId}, 日志: ${logIdentifier}] SSH 连接在挂起期间终止。原因: ${reason}`);
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currentSession.backendSshStatus = 'disconnected_by_backend';
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currentSession.disconnectionTimestamp = new Date().toISOString();
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this.removeChannelListeners(channel, sshClient); // 使用辅助方法移除
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this.removeChannelListeners(channel, sshClient);
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// 发出事件通知 WebSocket 层
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this.emit('sessionAutoTerminated', {
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userId: currentSession.userId, // 使用存储在 sessionDetails 中的 userId
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userId: currentSession.userId,
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suspendSessionId,
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reason
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});
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}
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};
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channel.on('close', handleUnexpectedClose);
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channel.on('close', () => handleSessionTermination('closed'));
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channel.on('error', (err: Error) => {
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console.error(`[用户: ${userId}, 会话: ${suspendSessionId}] 通道错误:`, err);
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handleUnexpectedClose();
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console.error(`[用户: ${userId}, 挂起ID: ${suspendSessionId}, 日志: ${logIdentifier}] 挂起会话的通道错误:`, err);
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handleSessionTermination('errored');
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});
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channel.on('end', () => handleSessionTermination('ended'));
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channel.on('exit', (code: number | null, signalName: string | null) => handleSessionTermination(`exited with code ${code}, signal ${signalName}`));
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sshClient.on('error', (err: Error) => {
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console.error(`[用户: ${userId}, 会话: ${suspendSessionId}] SSH客户端错误:`, err);
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handleUnexpectedClose();
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console.error(`[用户: ${userId}, 挂起ID: ${suspendSessionId}, 日志: ${logIdentifier}] 挂起会话的SSH客户端错误:`, err);
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handleSessionTermination('client errored');
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});
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sshClient.on('end', () => { // 'end' 通常是正常关闭,但也需要处理
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console.log(`[用户: ${userId}, 会话: ${suspendSessionId}] SSH客户端连接结束。`);
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handleUnexpectedClose(); // 如果是意外的,则标记为 disconnected
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sshClient.on('end', () => {
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console.log(`[用户: ${userId}, 挂起ID: ${suspendSessionId}, 日志: ${logIdentifier}] 挂起会话的SSH客户端连接结束。`);
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handleSessionTermination('client ended');
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});
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return suspendSessionId;
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}
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/**
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* 辅助方法:移除会话相关的事件监听器。
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*/
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private removeChannelListeners(channel: Channel, sshClient: Client): void {
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channel.removeAllListeners('data');
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channel.removeAllListeners('close');
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channel.removeAllListeners('error');
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channel.removeAllListeners('end');
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channel.removeAllListeners('exit');
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sshClient.removeAllListeners('error');
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sshClient.removeAllListeners('end');
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}
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/**
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* 列出指定用户的所有挂起会话(包括活跃和已断开的)。
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* 目前主要从内存中获取信息。
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@@ -196,26 +194,51 @@ export class SshSuspendService extends EventEmitter {
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* @returns Promise<{ sshClient: Client; channel: ClientChannel; logData: string; connectionName: string; originalConnectionId: string; } | null> 恢复成功则返回客户端、通道、日志数据、连接名和原始连接ID,否则返回null。
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*/
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async resumeSession(userId: number, suspendSessionId: string): Promise<{ sshClient: Client; channel: ClientChannel; logData: string; connectionName: string; originalConnectionId: string; } | null> {
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// console.log(`[SshSuspendService][用户: ${userId}] resumeSession 调用,suspendSessionId: ${suspendSessionId}`);
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const userSessions = this.getUserSessions(userId);
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const session = userSessions.get(suspendSessionId);
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if (!session || session.backendSshStatus !== 'hanging') {
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console.warn(`[用户: ${userId}] 尝试恢复的会话 ${suspendSessionId} 不存在或状态不正确 (${session?.backendSshStatus})。`);
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if (!session) {
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// console.warn(`[SshSuspendService][用户: ${userId}] resumeSession: 未找到挂起的会话 ${suspendSessionId}。`);
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return null;
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}
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// console.log(`[SshSuspendService][用户: ${userId}] resumeSession: 找到会话 ${suspendSessionId},状态: ${session.backendSshStatus}`);
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if (session.backendSshStatus !== 'hanging') {
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// console.warn(`[SshSuspendService][用户: ${userId}] resumeSession: 会话 ${suspendSessionId} 状态不为 'hanging' (当前: ${session.backendSshStatus}),无法恢复。`);
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return null;
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}
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// 停止监听旧通道事件
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this.removeChannelListeners(session.channel, session.sshClient);
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// console.log(`[SshSuspendService][用户: ${userId}] resumeSession: 已移除会话 ${suspendSessionId} 的旧监听器。`);
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const logData = await this.logStorageService.readLog(suspendSessionId);
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let logData = '';
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try {
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// 使用 session.tempLogPath (即 logIdentifier, 基于 originalSessionId) 来读取日志
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logData = await this.logStorageService.readLog(session.tempLogPath);
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console.log(`[SshSuspendService][用户: ${userId}] resumeSession: 已读取挂起会话 ${suspendSessionId} (日志: ${session.tempLogPath}) 的数据,长度: ${logData.length}`);
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} catch (error) {
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// console.error(`[SshSuspendService][用户: ${userId}] resumeSession: 读取挂起会话 ${suspendSessionId} (日志: ${session.tempLogPath}) 失败:`, error);
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// 根据策略,读取日志失败可能也应该导致恢复失败
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return null;
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}
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// 在从 userSessions 删除会话之前,保存需要返回的会话详细信息
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const { sshClient, channel, connectionName, connectionId: originalConnectionId } = session;
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userSessions.delete(suspendSessionId);
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await this.logStorageService.deleteLog(suspendSessionId);
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// console.log(`[SshSuspendService][用户: ${userId}] resumeSession: 已从内存中删除挂起会话 ${suspendSessionId} 的记录。`);
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try {
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// 删除以 session.tempLogPath (logIdentifier) 命名的日志文件
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await this.logStorageService.deleteLog(session.tempLogPath);
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// console.log(`[SshSuspendService][用户: ${userId}] resumeSession: 已删除挂起会话 ${suspendSessionId} 的日志文件 (路径: ${session.tempLogPath})。`);
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} catch (error) {
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// console.warn(`[SshSuspendService][用户: ${userId}] resumeSession: 删除挂起会话 ${suspendSessionId} 的日志文件 (路径: ${session.tempLogPath}) 失败:`, error);
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// 日志删除失败不应阻止恢复流程继续
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}
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console.log(`[用户: ${userId}] 挂起会话 ${suspendSessionId} 已成功恢复。`);
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// console.log(`[SshSuspendService][用户: ${userId}] resumeSession: 挂起会话 ${suspendSessionId} 准备返回恢复数据。`);
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return {
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sshClient,
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channel,
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@@ -239,9 +262,10 @@ export class SshSuspendService extends EventEmitter {
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console.warn(`[用户: ${userId}] 尝试终止的会话 ${suspendSessionId} 不存在或不是活跃状态 (${session?.backendSshStatus})。`);
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// 如果会话已断开,但记录还在,也应该能被“终止”(即移除)
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if(session && session.backendSshStatus === 'disconnected_by_backend'){
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const logPathToDelete = session.tempLogPath; // 获取正确的日志路径
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userSessions.delete(suspendSessionId);
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await this.logStorageService.deleteLog(suspendSessionId);
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console.log(`[用户: ${userId}] 已断开的挂起会话条目 ${suspendSessionId} 已通过终止操作移除。`);
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await this.logStorageService.deleteLog(logPathToDelete);
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console.log(`[用户: ${userId}] 已断开的挂起会话条目 ${suspendSessionId} (日志: ${logPathToDelete}) 已通过终止操作移除。`);
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return true;
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}
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return false;
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@@ -260,10 +284,11 @@ export class SshSuspendService extends EventEmitter {
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console.warn(`[用户: ${userId}, 会话: ${suspendSessionId}] 关闭sshClient时出错:`, e);
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}
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const logPathToFinallyDelete = session.tempLogPath; // 获取正确的日志路径
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userSessions.delete(suspendSessionId);
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await this.logStorageService.deleteLog(suspendSessionId);
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await this.logStorageService.deleteLog(logPathToFinallyDelete);
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console.log(`[用户: ${userId}] 活跃的挂起会话 ${suspendSessionId} 已成功终止并移除。`);
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console.log(`[用户: ${userId}] 活跃的挂起会话 ${suspendSessionId} (日志: ${logPathToFinallyDelete}) 已成功终止并移除。`);
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return true;
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}
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@@ -289,8 +314,13 @@ export class SshSuspendService extends EventEmitter {
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// 总是尝试删除日志文件,因为它可能对应一个已不在内存中的断开会话
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try {
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await this.logStorageService.deleteLog(suspendSessionId);
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console.log(`[用户: ${userId}] 已断开的挂起会话条目 ${suspendSessionId} 的日志已删除 (内存中状态: ${session ? session.backendSshStatus : '不在内存'})。`);
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// suspendSessionId 在这里是用户从UI上选择的,可能在内存中,也可能不在 (只剩日志文件)
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// 如果在内存中,session.tempLogPath 是正确的日志标识符
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// 如果不在内存中,suspendSessionId 本身可能就是日志文件名 (如果之前设计是这样的话,但现在统一用 originalSessionId 作为日志名基础)
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// 假设 remove 请求中的 suspendSessionId 就是我们存储的那个挂起ID
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const logPathToRemove = session ? session.tempLogPath : suspendSessionId; // 如果 session 不在内存,尝试直接用 suspendSessionId 作为日志文件名部分
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await this.logStorageService.deleteLog(logPathToRemove);
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console.log(`[用户: ${userId}] 已断开的挂起会话条目 ${suspendSessionId} 的日志 (标识: ${logPathToRemove}) 已删除 (内存中状态: ${session ? session.backendSshStatus : '不在内存'})。`);
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return true;
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} catch (error) {
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console.error(`[用户: ${userId}] 删除会话 ${suspendSessionId} 的日志文件失败:`, error);
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