mirror of
https://github.com/hellodigua/ChatLab.git
synced 2026-04-29 08:12:41 +08:00
886 lines
28 KiB
TypeScript
886 lines
28 KiB
TypeScript
/**
|
||
* 流式导入模块
|
||
* 在 Worker 线程中流式解析文件并批量写入数据库
|
||
*/
|
||
|
||
import Database from 'better-sqlite3'
|
||
import * as fs from 'fs'
|
||
import * as path from 'path'
|
||
import {
|
||
streamParseFile,
|
||
detectFormat,
|
||
getPreprocessor,
|
||
needsPreprocess,
|
||
type ParsedMeta,
|
||
type ParsedMember,
|
||
type ParsedMessage,
|
||
} from '../../parser'
|
||
import { getDbDir } from '../core'
|
||
import { initPerfLog, logPerf, logPerfDetail, resetPerfLog, logInfo, logError, logSummary, getCurrentLogFile } from '../core'
|
||
import { sendProgress, generateSessionId, getDbPath, createDatabaseWithoutIndexes, createIndexes } from './utils'
|
||
|
||
/** 跳过消息的原因统计 */
|
||
export interface SkipReasons {
|
||
noSenderId: number
|
||
noAccountName: number
|
||
invalidTimestamp: number
|
||
noType: number
|
||
}
|
||
|
||
/** 导入诊断信息 */
|
||
export interface ImportDiagnostics {
|
||
/** 日志文件路径 */
|
||
logFile: string | null
|
||
/** 检测到的格式 */
|
||
detectedFormat: string | null
|
||
/** 收到的消息数 */
|
||
messagesReceived: number
|
||
/** 写入的消息数 */
|
||
messagesWritten: number
|
||
/** 跳过的消息数 */
|
||
messagesSkipped: number
|
||
/** 跳过原因统计 */
|
||
skipReasons: SkipReasons
|
||
}
|
||
|
||
/** 流式导入结果 */
|
||
export interface StreamImportResult {
|
||
success: boolean
|
||
sessionId?: string
|
||
error?: string
|
||
/** 诊断信息（成功或失败时都返回） */
|
||
diagnostics?: ImportDiagnostics
|
||
}
|
||
|
||
// ==================== 临时数据库相关（用于合并功能） ====================
|
||
|
||
/**
|
||
* 获取临时数据库目录（Worker 环境）
|
||
*/
|
||
function getTempDir(): string {
|
||
const dbDir = getDbDir()
|
||
const tempDir = path.join(path.dirname(dbDir), 'temp')
|
||
if (!fs.existsSync(tempDir)) {
|
||
fs.mkdirSync(tempDir, { recursive: true })
|
||
}
|
||
return tempDir
|
||
}
|
||
|
||
/**
|
||
* 生成临时数据库文件路径
|
||
*/
|
||
function generateTempDbPath(sourceFilePath: string): string {
|
||
const timestamp = Date.now()
|
||
const random = Math.random().toString(36).substring(2, 8)
|
||
const baseName = path.basename(sourceFilePath, path.extname(sourceFilePath))
|
||
const safeName = baseName.replace(/[/\\?%*:|"<>]/g, '_').substring(0, 50)
|
||
return path.join(getTempDir(), `merge_${safeName}_${timestamp}_${random}.db`)
|
||
}
|
||
|
||
/**
|
||
* 创建临时数据库并初始化表结构
|
||
*/
|
||
function createTempDatabase(dbPath: string): Database.Database {
|
||
const db = new Database(dbPath)
|
||
|
||
db.pragma('journal_mode = WAL')
|
||
db.pragma('synchronous = NORMAL')
|
||
|
||
db.exec(`
|
||
CREATE TABLE IF NOT EXISTS meta (
|
||
name TEXT NOT NULL,
|
||
platform TEXT NOT NULL,
|
||
type TEXT NOT NULL,
|
||
group_id TEXT,
|
||
group_avatar TEXT,
|
||
owner_id TEXT,
|
||
schema_version INTEGER DEFAULT 1
|
||
);
|
||
|
||
CREATE TABLE IF NOT EXISTS member (
|
||
platform_id TEXT PRIMARY KEY,
|
||
account_name TEXT,
|
||
group_nickname TEXT,
|
||
avatar TEXT
|
||
);
|
||
|
||
CREATE TABLE IF NOT EXISTS message (
|
||
id INTEGER PRIMARY KEY AUTOINCREMENT,
|
||
sender_platform_id TEXT NOT NULL,
|
||
sender_account_name TEXT,
|
||
sender_group_nickname TEXT,
|
||
timestamp INTEGER NOT NULL,
|
||
type INTEGER NOT NULL,
|
||
content TEXT
|
||
);
|
||
|
||
CREATE INDEX IF NOT EXISTS idx_message_ts ON message(timestamp);
|
||
CREATE INDEX IF NOT EXISTS idx_message_sender ON message(sender_platform_id);
|
||
`)
|
||
|
||
return db
|
||
}
|
||
|
||
/**
|
||
* 流式导入聊天记录
|
||
* @param filePath 文件路径
|
||
* @param requestId 请求ID（用于进度回调）
|
||
*/
|
||
export async function streamImport(filePath: string, requestId: string): Promise<StreamImportResult> {
|
||
// 检测格式
|
||
const formatFeature = detectFormat(filePath)
|
||
if (!formatFeature) {
|
||
return { success: false, error: 'error.unrecognized_format' }
|
||
}
|
||
|
||
// 初始化性能日志（实时写入文件）
|
||
resetPerfLog()
|
||
const sessionId = generateSessionId()
|
||
initPerfLog(sessionId)
|
||
|
||
// 记录导入开始信息
|
||
logInfo(`文件路径: ${filePath}`)
|
||
logInfo(`检测到格式: ${formatFeature.name} (${formatFeature.id})`)
|
||
logInfo(`平台: ${formatFeature.platform}`)
|
||
logPerf('开始导入', 0)
|
||
|
||
// 预处理：如果格式需要且文件较大，先精简
|
||
let actualFilePath = filePath
|
||
let tempFilePath: string | null = null
|
||
const preprocessor = getPreprocessor(filePath)
|
||
|
||
if (preprocessor && needsPreprocess(filePath)) {
|
||
logInfo('文件需要预处理，开始精简大文件...')
|
||
sendProgress(requestId, {
|
||
stage: 'parsing',
|
||
bytesRead: 0,
|
||
totalBytes: 0,
|
||
messagesProcessed: 0,
|
||
percentage: 0,
|
||
message: '', // Frontend translates based on stage
|
||
})
|
||
|
||
try {
|
||
tempFilePath = await preprocessor.preprocess(filePath, (progress) => {
|
||
sendProgress(requestId, {
|
||
...progress,
|
||
message: '', // Frontend translates based on stage
|
||
})
|
||
})
|
||
actualFilePath = tempFilePath
|
||
logInfo(`预处理完成，临时文件: ${tempFilePath}`)
|
||
} catch (err) {
|
||
const errorMsg = `预处理失败: ${err instanceof Error ? err.message : String(err)}`
|
||
logError(errorMsg, err instanceof Error ? err : undefined)
|
||
return {
|
||
success: false,
|
||
error: errorMsg,
|
||
}
|
||
}
|
||
}
|
||
|
||
const db = createDatabaseWithoutIndexes(sessionId)
|
||
|
||
// 准备语句
|
||
const insertMeta = db.prepare(`
|
||
INSERT INTO meta (name, platform, type, imported_at, group_id, group_avatar, owner_id) VALUES (?, ?, ?, ?, ?, ?, ?)
|
||
`)
|
||
const insertMember = db.prepare(`
|
||
INSERT OR IGNORE INTO member (platform_id, account_name, group_nickname, avatar, roles) VALUES (?, ?, ?, ?, ?)
|
||
`)
|
||
const getMemberId = db.prepare(`SELECT id FROM member WHERE platform_id = ?`)
|
||
const insertMessage = db.prepare(`
|
||
INSERT INTO message (sender_id, sender_account_name, sender_group_nickname, ts, type, content, reply_to_message_id, platform_message_id)
|
||
VALUES (?, ?, ?, ?, ?, ?, ?, ?)
|
||
`)
|
||
const insertNameHistory = db.prepare(`
|
||
INSERT INTO member_name_history (member_id, name_type, name, start_ts, end_ts) VALUES (?, ?, ?, ?, ?)
|
||
`)
|
||
const updateMemberAccountName = db.prepare(`UPDATE member SET account_name = ? WHERE platform_id = ?`)
|
||
const updateMemberGroupNickname = db.prepare(`UPDATE member SET group_nickname = ? WHERE platform_id = ?`)
|
||
|
||
// 成员ID映射（platformId -> dbId）
|
||
const memberIdMap = new Map<string, number>()
|
||
// 分别追踪 account_name 和 group_nickname 的变化
|
||
const accountNameTracker = new Map<
|
||
string,
|
||
{
|
||
currentName: string
|
||
lastSeenTs: number
|
||
history: Array<{ name: string; startTs: number }>
|
||
}
|
||
>()
|
||
const groupNicknameTracker = new Map<
|
||
string,
|
||
{
|
||
currentName: string
|
||
lastSeenTs: number
|
||
history: Array<{ name: string; startTs: number }>
|
||
}
|
||
>()
|
||
// 是否已插入 meta
|
||
let metaInserted = false
|
||
|
||
// 分批提交配置（每 50000 条消息提交一次）
|
||
const BATCH_COMMIT_SIZE = 50000
|
||
// WAL checkpoint 间隔（每 200000 条执行一次 checkpoint）
|
||
const CHECKPOINT_INTERVAL = 200000
|
||
let messageCountInBatch = 0
|
||
let totalMessageCount = 0
|
||
let lastCheckpointCount = 0
|
||
let inTransaction = false
|
||
|
||
// 开始第一个事务
|
||
const beginTransaction = () => {
|
||
if (!inTransaction) {
|
||
db.exec('BEGIN TRANSACTION')
|
||
inTransaction = true
|
||
}
|
||
}
|
||
|
||
// 执行 WAL checkpoint（将 WAL 日志合并到主数据库）
|
||
const doCheckpoint = () => {
|
||
try {
|
||
db.pragma('wal_checkpoint(TRUNCATE)')
|
||
} catch {
|
||
// 忽略 WAL checkpoint 失败
|
||
}
|
||
}
|
||
|
||
// 提交当前事务并开始新事务
|
||
const commitAndBeginNew = () => {
|
||
if (inTransaction) {
|
||
db.exec('COMMIT')
|
||
inTransaction = false
|
||
|
||
// 记录性能日志
|
||
logPerf(`提交事务`, totalMessageCount, BATCH_COMMIT_SIZE)
|
||
|
||
// 定期执行 WAL checkpoint（防止 WAL 文件过大导致变慢）
|
||
if (totalMessageCount - lastCheckpointCount >= CHECKPOINT_INTERVAL) {
|
||
doCheckpoint()
|
||
logPerf('WAL checkpoint', totalMessageCount)
|
||
lastCheckpointCount = totalMessageCount
|
||
}
|
||
|
||
// Send write progress (frontend shows messagesProcessed count)
|
||
sendProgress(requestId, {
|
||
stage: 'importing',
|
||
bytesRead: 0,
|
||
totalBytes: 0,
|
||
messagesProcessed: totalMessageCount,
|
||
percentage: 100,
|
||
message: '', // Frontend translates based on stage and shows messagesProcessed
|
||
})
|
||
}
|
||
beginTransaction()
|
||
}
|
||
|
||
beginTransaction()
|
||
|
||
// 标记是否需要在 finally 中删除数据库文件
|
||
// 仅在导入失败或消息数为 0 时设置为 true
|
||
let shouldDeleteDb = false
|
||
let importError: string | null = null
|
||
|
||
// 统计回调调用次数（用于诊断）
|
||
let callbackStats = {
|
||
onProgressCalls: 0,
|
||
onLogCalls: 0,
|
||
onMetaCalls: 0,
|
||
onMembersCalls: 0,
|
||
onMessageBatchCalls: 0,
|
||
totalMembersReceived: 0,
|
||
totalMessagesReceived: 0,
|
||
skippedNoSenderId: 0,
|
||
skippedNoAccountName: 0,
|
||
skippedInvalidTimestamp: 0,
|
||
skippedNoType: 0,
|
||
}
|
||
|
||
logInfo('开始调用 streamParseFile...')
|
||
|
||
try {
|
||
await streamParseFile(actualFilePath, {
|
||
batchSize: 5000,
|
||
|
||
onProgress: (progress) => {
|
||
callbackStats.onProgressCalls++
|
||
// 转发进度到主进程
|
||
sendProgress(requestId, progress)
|
||
},
|
||
|
||
onLog: (level, message) => {
|
||
callbackStats.onLogCalls++
|
||
// 将解析器日志写入导入日志文件
|
||
if (level === 'error') {
|
||
logError(message)
|
||
} else {
|
||
logInfo(message)
|
||
}
|
||
},
|
||
|
||
onMeta: (meta: ParsedMeta) => {
|
||
callbackStats.onMetaCalls++
|
||
if (!metaInserted) {
|
||
logInfo(`写入 meta: name=${meta.name}, type=${meta.type}, platform=${meta.platform}`)
|
||
insertMeta.run(
|
||
meta.name,
|
||
meta.platform,
|
||
meta.type,
|
||
Math.floor(Date.now() / 1000),
|
||
meta.groupId || null,
|
||
meta.groupAvatar || null,
|
||
meta.ownerId || null
|
||
)
|
||
metaInserted = true
|
||
}
|
||
},
|
||
|
||
onMembers: (members: ParsedMember[]) => {
|
||
callbackStats.onMembersCalls++
|
||
callbackStats.totalMembersReceived += members.length
|
||
logInfo(`收到成员批次: ${members.length} 个成员`)
|
||
for (const member of members) {
|
||
insertMember.run(
|
||
member.platformId,
|
||
member.accountName || null,
|
||
member.groupNickname || null,
|
||
member.avatar || null,
|
||
member.roles ? JSON.stringify(member.roles) : '[]'
|
||
)
|
||
const row = getMemberId.get(member.platformId) as { id: number } | undefined
|
||
if (row) {
|
||
memberIdMap.set(member.platformId, row.id)
|
||
}
|
||
}
|
||
},
|
||
|
||
onMessageBatch: (messages: ParsedMessage[]) => {
|
||
callbackStats.onMessageBatchCalls++
|
||
callbackStats.totalMessagesReceived += messages.length
|
||
// 每收到 10 批消息记录一次日志
|
||
if (callbackStats.onMessageBatchCalls <= 3 || callbackStats.onMessageBatchCalls % 10 === 0) {
|
||
logInfo(`收到消息批次 #${callbackStats.onMessageBatchCalls}: ${messages.length} 条消息`)
|
||
}
|
||
|
||
// 分阶段计时
|
||
let memberLookupTime = 0
|
||
let memberInsertTime = 0
|
||
let messageInsertTime = 0
|
||
let nicknameTrackTime = 0
|
||
let memberLookupCount = 0
|
||
let memberInsertCount = 0
|
||
let nicknameChangeCount = 0
|
||
|
||
for (const msg of messages) {
|
||
// 数据验证：跳过无效消息（带统计）
|
||
if (!msg.senderPlatformId) {
|
||
callbackStats.skippedNoSenderId++
|
||
continue
|
||
}
|
||
if (!msg.senderAccountName) {
|
||
callbackStats.skippedNoAccountName++
|
||
continue
|
||
}
|
||
if (msg.timestamp === undefined || msg.timestamp === null || isNaN(msg.timestamp)) {
|
||
callbackStats.skippedInvalidTimestamp++
|
||
continue
|
||
}
|
||
if (msg.type === undefined || msg.type === null) {
|
||
callbackStats.skippedNoType++
|
||
continue
|
||
}
|
||
|
||
// 确保成员存在
|
||
let t0 = Date.now()
|
||
if (!memberIdMap.has(msg.senderPlatformId)) {
|
||
// 消息中没有头像和角色信息，设为默认值
|
||
insertMember.run(
|
||
msg.senderPlatformId,
|
||
msg.senderAccountName || null,
|
||
msg.senderGroupNickname || null,
|
||
null,
|
||
'[]'
|
||
)
|
||
const row = getMemberId.get(msg.senderPlatformId) as { id: number } | undefined
|
||
if (row) {
|
||
memberIdMap.set(msg.senderPlatformId, row.id)
|
||
}
|
||
memberInsertCount++
|
||
memberInsertTime += Date.now() - t0
|
||
} else {
|
||
memberLookupCount++
|
||
memberLookupTime += Date.now() - t0
|
||
}
|
||
|
||
const senderId = memberIdMap.get(msg.senderPlatformId)
|
||
if (senderId === undefined) continue
|
||
|
||
// 插入消息
|
||
// 防御性处理：确保所有值都是 SQLite 兼容的类型
|
||
// SQLite 只支持: numbers, strings, bigints, buffers, null
|
||
let safeContent: string | null = null
|
||
if (msg.content != null) {
|
||
safeContent = typeof msg.content === 'string' ? msg.content : JSON.stringify(msg.content)
|
||
}
|
||
|
||
t0 = Date.now()
|
||
insertMessage.run(
|
||
senderId,
|
||
msg.senderAccountName || null,
|
||
msg.senderGroupNickname || null,
|
||
msg.timestamp,
|
||
msg.type,
|
||
safeContent,
|
||
msg.replyToMessageId || null,
|
||
msg.platformMessageId || null
|
||
)
|
||
messageInsertTime += Date.now() - t0
|
||
messageCountInBatch++
|
||
totalMessageCount++
|
||
|
||
// 追踪昵称变化（仅记录，不写入数据库，最后批量处理）
|
||
t0 = Date.now()
|
||
|
||
// 追踪 account_name 变化
|
||
const accountName = msg.senderAccountName
|
||
if (accountName && accountName !== msg.senderPlatformId) {
|
||
const tracker = accountNameTracker.get(msg.senderPlatformId)
|
||
if (!tracker) {
|
||
accountNameTracker.set(msg.senderPlatformId, {
|
||
currentName: accountName,
|
||
lastSeenTs: msg.timestamp,
|
||
history: [{ name: accountName, startTs: msg.timestamp }],
|
||
})
|
||
nicknameChangeCount++
|
||
} else if (tracker.currentName !== accountName) {
|
||
tracker.history.push({ name: accountName, startTs: msg.timestamp })
|
||
tracker.currentName = accountName
|
||
tracker.lastSeenTs = msg.timestamp
|
||
nicknameChangeCount++
|
||
} else {
|
||
tracker.lastSeenTs = msg.timestamp
|
||
}
|
||
}
|
||
|
||
// 追踪 group_nickname 变化
|
||
const groupNickname = msg.senderGroupNickname
|
||
if (groupNickname) {
|
||
const tracker = groupNicknameTracker.get(msg.senderPlatformId)
|
||
if (!tracker) {
|
||
groupNicknameTracker.set(msg.senderPlatformId, {
|
||
currentName: groupNickname,
|
||
lastSeenTs: msg.timestamp,
|
||
history: [{ name: groupNickname, startTs: msg.timestamp }],
|
||
})
|
||
nicknameChangeCount++
|
||
} else if (tracker.currentName !== groupNickname) {
|
||
tracker.history.push({ name: groupNickname, startTs: msg.timestamp })
|
||
tracker.currentName = groupNickname
|
||
tracker.lastSeenTs = msg.timestamp
|
||
nicknameChangeCount++
|
||
} else {
|
||
tracker.lastSeenTs = msg.timestamp
|
||
}
|
||
}
|
||
|
||
nicknameTrackTime += Date.now() - t0
|
||
|
||
// 分批提交（每 50000 条）
|
||
if (messageCountInBatch >= BATCH_COMMIT_SIZE) {
|
||
// 记录详细分阶段耗时
|
||
const detail =
|
||
`[详细] 成员查找: ${memberLookupTime}ms (${memberLookupCount}次) | ` +
|
||
`成员插入: ${memberInsertTime}ms (${memberInsertCount}次) | ` +
|
||
`消息插入: ${messageInsertTime}ms | ` +
|
||
`昵称追踪: ${nicknameTrackTime}ms (变化${nicknameChangeCount}次)`
|
||
logPerfDetail(detail)
|
||
|
||
commitAndBeginNew()
|
||
messageCountInBatch = 0
|
||
|
||
// 重置计时
|
||
memberLookupTime = 0
|
||
memberInsertTime = 0
|
||
messageInsertTime = 0
|
||
nicknameTrackTime = 0
|
||
memberLookupCount = 0
|
||
memberInsertCount = 0
|
||
nicknameChangeCount = 0
|
||
}
|
||
}
|
||
},
|
||
})
|
||
|
||
// 提交最后的消息事务
|
||
if (inTransaction) {
|
||
db.exec('COMMIT')
|
||
inTransaction = false
|
||
}
|
||
|
||
// 批量写入昵称历史（在索引创建前，写入速度更快）
|
||
sendProgress(requestId, {
|
||
stage: 'importing',
|
||
bytesRead: 0,
|
||
totalBytes: 0,
|
||
messagesProcessed: totalMessageCount,
|
||
percentage: 100,
|
||
message: '', // Frontend translates based on stage
|
||
})
|
||
logPerf('开始写入昵称历史', totalMessageCount)
|
||
|
||
// 开始新事务
|
||
db.exec('BEGIN TRANSACTION')
|
||
let historyCount = 0
|
||
let filteredCount = 0
|
||
|
||
// 处理 account_name 历史
|
||
for (const [platformId, tracker] of accountNameTracker.entries()) {
|
||
if (!platformId || platformId === '0' || platformId === 'undefined') continue
|
||
|
||
const senderId = memberIdMap.get(platformId)
|
||
if (!senderId) continue
|
||
|
||
// 清理历史记录
|
||
const uniqueNames = new Map<string, { startTs: number; lastTs: number }>()
|
||
for (const h of tracker.history) {
|
||
const existing = uniqueNames.get(h.name)
|
||
if (!existing) {
|
||
uniqueNames.set(h.name, { startTs: h.startTs, lastTs: h.startTs })
|
||
} else {
|
||
existing.lastTs = h.startTs
|
||
}
|
||
}
|
||
|
||
uniqueNames.delete(platformId)
|
||
|
||
if (uniqueNames.size <= 1) {
|
||
filteredCount++
|
||
updateMemberAccountName.run(tracker.currentName, platformId)
|
||
continue
|
||
}
|
||
|
||
const sortedHistory = Array.from(uniqueNames.entries()).sort((a, b) => a[1].startTs - b[1].startTs)
|
||
for (let i = 0; i < sortedHistory.length; i++) {
|
||
const [name, { startTs }] = sortedHistory[i]
|
||
const endTs = i < sortedHistory.length - 1 ? sortedHistory[i + 1][1].startTs : null
|
||
insertNameHistory.run(senderId, 'account_name', name, startTs, endTs)
|
||
historyCount++
|
||
}
|
||
|
||
updateMemberAccountName.run(tracker.currentName, platformId)
|
||
}
|
||
|
||
// 处理 group_nickname 历史
|
||
for (const [platformId, tracker] of groupNicknameTracker.entries()) {
|
||
if (!platformId || platformId === '0' || platformId === 'undefined') continue
|
||
|
||
const senderId = memberIdMap.get(platformId)
|
||
if (!senderId) continue
|
||
|
||
const uniqueNames = new Map<string, { startTs: number; lastTs: number }>()
|
||
for (const h of tracker.history) {
|
||
const existing = uniqueNames.get(h.name)
|
||
if (!existing) {
|
||
uniqueNames.set(h.name, { startTs: h.startTs, lastTs: h.startTs })
|
||
} else {
|
||
existing.lastTs = h.startTs
|
||
}
|
||
}
|
||
|
||
if (uniqueNames.size <= 1) {
|
||
filteredCount++
|
||
updateMemberGroupNickname.run(tracker.currentName, platformId)
|
||
continue
|
||
}
|
||
|
||
const sortedHistory = Array.from(uniqueNames.entries()).sort((a, b) => a[1].startTs - b[1].startTs)
|
||
for (let i = 0; i < sortedHistory.length; i++) {
|
||
const [name, { startTs }] = sortedHistory[i]
|
||
const endTs = i < sortedHistory.length - 1 ? sortedHistory[i + 1][1].startTs : null
|
||
insertNameHistory.run(senderId, 'group_nickname', name, startTs, endTs)
|
||
historyCount++
|
||
}
|
||
|
||
updateMemberGroupNickname.run(tracker.currentName, platformId)
|
||
}
|
||
|
||
db.exec('COMMIT')
|
||
logPerf(`昵称历史写入完成 (${historyCount}条)`, totalMessageCount)
|
||
|
||
// 创建索引（导入完成后批量创建，比边导入边更新快很多）
|
||
sendProgress(requestId, {
|
||
stage: 'importing',
|
||
bytesRead: 0,
|
||
totalBytes: 0,
|
||
messagesProcessed: totalMessageCount,
|
||
percentage: 100,
|
||
message: '', // Frontend translates based on stage
|
||
})
|
||
logPerf('开始创建索引', totalMessageCount)
|
||
createIndexes(db)
|
||
logPerf('索引创建完成', totalMessageCount)
|
||
|
||
// 最终 WAL checkpoint
|
||
sendProgress(requestId, {
|
||
stage: 'importing',
|
||
bytesRead: 0,
|
||
totalBytes: 0,
|
||
messagesProcessed: totalMessageCount,
|
||
percentage: 100,
|
||
message: '', // Frontend translates based on stage
|
||
})
|
||
doCheckpoint()
|
||
logPerf('WAL checkpoint 完成', totalMessageCount)
|
||
logPerf('导入完成', totalMessageCount)
|
||
|
||
// 记录解析器回调统计（诊断信息）
|
||
logInfo(`=== 解析器回调统计 ===`)
|
||
logInfo(`onProgress 调用次数: ${callbackStats.onProgressCalls}`)
|
||
logInfo(`onLog 调用次数: ${callbackStats.onLogCalls}`)
|
||
logInfo(`onMeta 调用次数: ${callbackStats.onMetaCalls}`)
|
||
logInfo(`onMembers 调用次数: ${callbackStats.onMembersCalls}, 总成员数: ${callbackStats.totalMembersReceived}`)
|
||
logInfo(`onMessageBatch 调用次数: ${callbackStats.onMessageBatchCalls}, 总消息数: ${callbackStats.totalMessagesReceived}`)
|
||
if (
|
||
callbackStats.skippedNoSenderId > 0 ||
|
||
callbackStats.skippedNoAccountName > 0 ||
|
||
callbackStats.skippedInvalidTimestamp > 0 ||
|
||
callbackStats.skippedNoType > 0
|
||
) {
|
||
logInfo(`=== 消息跳过统计 ===`)
|
||
if (callbackStats.skippedNoSenderId > 0) logInfo(` 无 senderPlatformId: ${callbackStats.skippedNoSenderId}`)
|
||
if (callbackStats.skippedNoAccountName > 0) logInfo(` 无 senderAccountName: ${callbackStats.skippedNoAccountName}`)
|
||
if (callbackStats.skippedInvalidTimestamp > 0) logInfo(` 无效 timestamp: ${callbackStats.skippedInvalidTimestamp}`)
|
||
if (callbackStats.skippedNoType > 0) logInfo(` 无 type: ${callbackStats.skippedNoType}`)
|
||
}
|
||
|
||
// 写入日志摘要
|
||
logSummary(totalMessageCount, memberIdMap.size)
|
||
|
||
// 检查消息数量，如果为 0 则视为导入失败
|
||
if (totalMessageCount === 0) {
|
||
logError(`导入失败：未解析到任何消息 (收到 ${callbackStats.totalMessagesReceived} 条消息，全部被跳过或未收到任何消息)`)
|
||
// 标记需要删除数据库文件（将在 finally 中执行，确保数据库已关闭）
|
||
shouldDeleteDb = true
|
||
importError = 'error.no_messages'
|
||
}
|
||
} catch (error) {
|
||
// 记录错误日志
|
||
logError('导入失败', error instanceof Error ? error : undefined)
|
||
|
||
// 回滚当前事务
|
||
if (inTransaction) {
|
||
try {
|
||
db.exec('ROLLBACK')
|
||
} catch {
|
||
// 忽略回滚错误
|
||
}
|
||
}
|
||
|
||
// 标记需要删除数据库文件（将在 finally 中执行，确保数据库已关闭）
|
||
shouldDeleteDb = true
|
||
importError = error instanceof Error ? error.message : String(error)
|
||
} finally {
|
||
// 先关闭数据库连接（释放文件锁）
|
||
db.close()
|
||
|
||
// 清理临时文件
|
||
if (tempFilePath && preprocessor) {
|
||
preprocessor.cleanup(tempFilePath)
|
||
}
|
||
|
||
// 删除失败的数据库文件（在数据库关闭后执行，避免 Windows 上的 EBUSY 错误）
|
||
if (shouldDeleteDb) {
|
||
const dbPath = getDbPath(sessionId)
|
||
try {
|
||
if (fs.existsSync(dbPath)) {
|
||
fs.unlinkSync(dbPath)
|
||
}
|
||
// 同时清理 WAL 和 SHM 文件
|
||
const walPath = dbPath + '-wal'
|
||
const shmPath = dbPath + '-shm'
|
||
if (fs.existsSync(walPath)) {
|
||
fs.unlinkSync(walPath)
|
||
}
|
||
if (fs.existsSync(shmPath)) {
|
||
fs.unlinkSync(shmPath)
|
||
}
|
||
} catch (cleanupError) {
|
||
logError('清理失败的数据库文件时出错', cleanupError instanceof Error ? cleanupError : undefined)
|
||
}
|
||
}
|
||
}
|
||
|
||
// 构造诊断信息
|
||
const diagnostics: ImportDiagnostics = {
|
||
logFile: getCurrentLogFile(),
|
||
detectedFormat: formatFeature ? `${formatFeature.name} (${formatFeature.id})` : null,
|
||
messagesReceived: callbackStats.totalMessagesReceived,
|
||
messagesWritten: totalMessageCount,
|
||
messagesSkipped:
|
||
callbackStats.skippedNoSenderId +
|
||
callbackStats.skippedNoAccountName +
|
||
callbackStats.skippedInvalidTimestamp +
|
||
callbackStats.skippedNoType,
|
||
skipReasons: {
|
||
noSenderId: callbackStats.skippedNoSenderId,
|
||
noAccountName: callbackStats.skippedNoAccountName,
|
||
invalidTimestamp: callbackStats.skippedInvalidTimestamp,
|
||
noType: callbackStats.skippedNoType,
|
||
},
|
||
}
|
||
|
||
// 返回结果（移到 try-catch-finally 之外）
|
||
if (importError) {
|
||
return { success: false, error: importError, diagnostics }
|
||
}
|
||
return { success: true, sessionId, diagnostics }
|
||
}
|
||
|
||
/** 流式解析文件信息的返回结果 */
|
||
export interface StreamParseFileInfoResult {
|
||
// 基本信息（用于预览）
|
||
name: string
|
||
format: string
|
||
platform: string
|
||
messageCount: number
|
||
memberCount: number
|
||
fileSize: number
|
||
// 临时数据库路径（用于后续合并，避免内存溢出）
|
||
tempDbPath: string
|
||
}
|
||
|
||
/**
|
||
* 流式解析文件，写入临时数据库
|
||
* 用于合并功能：解析结果存入临时 SQLite，避免内存溢出
|
||
*/
|
||
export async function streamParseFileInfo(filePath: string, requestId: string): Promise<StreamParseFileInfoResult> {
|
||
const formatFeature = detectFormat(filePath)
|
||
if (!formatFeature) {
|
||
throw new Error('无法识别文件格式')
|
||
}
|
||
|
||
// 获取文件大小
|
||
const fileSize = fs.statSync(filePath).size
|
||
|
||
// 立即发送初始进度，让用户知道已开始处理
|
||
sendProgress(requestId, {
|
||
stage: 'parsing',
|
||
bytesRead: 0,
|
||
totalBytes: fileSize,
|
||
messagesProcessed: 0,
|
||
percentage: 0,
|
||
message: '', // Frontend translates based on stage
|
||
})
|
||
|
||
// 创建临时数据库
|
||
const tempDbPath = generateTempDbPath(filePath)
|
||
const db = createTempDatabase(tempDbPath)
|
||
|
||
// 准备语句
|
||
const insertMeta = db.prepare(
|
||
'INSERT INTO meta (name, platform, type, group_id, group_avatar, owner_id) VALUES (?, ?, ?, ?, ?, ?)'
|
||
)
|
||
const insertMember = db.prepare(
|
||
'INSERT OR IGNORE INTO member (platform_id, account_name, group_nickname, avatar) VALUES (?, ?, ?, ?)'
|
||
)
|
||
const insertMessage = db.prepare(`
|
||
INSERT INTO message (sender_platform_id, sender_account_name, sender_group_nickname, timestamp, type, content)
|
||
VALUES (?, ?, ?, ?, ?, ?)
|
||
`)
|
||
|
||
let meta: ParsedMeta = { name: '未知群聊', platform: formatFeature.platform, type: 'group' }
|
||
const memberSet = new Set<string>()
|
||
let messageCount = 0
|
||
let metaInserted = false
|
||
|
||
// 开始事务
|
||
db.exec('BEGIN TRANSACTION')
|
||
|
||
try {
|
||
await streamParseFile(filePath, {
|
||
// 对于大文件使用更小的批次，以更频繁地更新进度
|
||
batchSize: fileSize > 100 * 1024 * 1024 ? 2000 : 5000,
|
||
|
||
onProgress: (progress) => {
|
||
sendProgress(requestId, progress)
|
||
},
|
||
|
||
onMeta: (parsedMeta) => {
|
||
meta = parsedMeta
|
||
if (!metaInserted) {
|
||
insertMeta.run(
|
||
parsedMeta.name,
|
||
parsedMeta.platform,
|
||
parsedMeta.type,
|
||
parsedMeta.groupId || null,
|
||
parsedMeta.groupAvatar || null,
|
||
parsedMeta.ownerId || null
|
||
)
|
||
metaInserted = true
|
||
}
|
||
},
|
||
|
||
onMembers: (parsedMembers) => {
|
||
for (const m of parsedMembers) {
|
||
if (!memberSet.has(m.platformId)) {
|
||
memberSet.add(m.platformId)
|
||
insertMember.run(m.platformId, m.accountName || null, m.groupNickname || null, m.avatar || null)
|
||
}
|
||
}
|
||
},
|
||
|
||
onMessageBatch: (batch) => {
|
||
for (const msg of batch) {
|
||
// 确保成员存在
|
||
if (!memberSet.has(msg.senderPlatformId)) {
|
||
memberSet.add(msg.senderPlatformId)
|
||
// 消息中没有头像信息，设为 null
|
||
insertMember.run(msg.senderPlatformId, msg.senderAccountName || null, msg.senderGroupNickname || null, null)
|
||
}
|
||
|
||
insertMessage.run(
|
||
msg.senderPlatformId,
|
||
msg.senderAccountName || null,
|
||
msg.senderGroupNickname || null,
|
||
msg.timestamp,
|
||
msg.type,
|
||
msg.content || null
|
||
)
|
||
messageCount++
|
||
}
|
||
},
|
||
})
|
||
|
||
// 提交事务
|
||
db.exec('COMMIT')
|
||
db.close()
|
||
|
||
return {
|
||
name: meta.name,
|
||
format: formatFeature.name,
|
||
platform: meta.platform,
|
||
messageCount,
|
||
memberCount: memberSet.size,
|
||
fileSize,
|
||
tempDbPath,
|
||
}
|
||
} catch (error) {
|
||
// 回滚并清理
|
||
try {
|
||
db.exec('ROLLBACK')
|
||
} catch {
|
||
// 忽略回滚错误
|
||
}
|
||
db.close()
|
||
|
||
// 删除失败的临时数据库
|
||
if (fs.existsSync(tempDbPath)) {
|
||
fs.unlinkSync(tempDbPath)
|
||
}
|
||
|
||
throw error
|
||
}
|
||
}
|