mirror of
https://github.com/overleaf/overleaf.git
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8b4b454b97
Include tracked deletes when limiting document size GitOrigin-RevId: 9d7b2870001fb942eaa92db78993fee1ddb3937c
745 lines
21 KiB
TypeScript
745 lines
21 KiB
TypeScript
/* eslint-disable camelcase */
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// Migrated from services/web/frontend/js/ide/editor/Document.js
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import RangesTracker from '@overleaf/ranges-tracker'
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import { ShareJsDoc } from './share-js-doc'
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import { debugConsole } from '@/utils/debugging'
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import { Socket } from '@/features/ide-react/connection/types/socket'
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import { IdeEventEmitter } from '@/features/ide-react/create-ide-event-emitter'
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import { EditorFacade } from '@/features/source-editor/extensions/realtime'
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import { EventLog } from '@/features/ide-react/editor/event-log'
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import EditorWatchdogManager from '@/features/ide-react/connection/editor-watchdog-manager'
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import EventEmitter from '@/utils/EventEmitter'
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import {
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AnyOperation,
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Change,
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CommentOperation,
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EditOperation,
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} from '../../../../../types/change'
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import {
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isCommentOperation,
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isDeleteOperation,
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isInsertOperation,
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} from '@/utils/operations'
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import { decodeUtf8 } from '@/utils/decode-utf8'
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import {
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ShareJsOperation,
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TrackChangesIdSeeds,
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Version,
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} from '@/features/ide-react/editor/types/document'
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import { ThreadId } from '../../../../../types/review-panel/review-panel'
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import getMeta from '@/utils/meta'
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const MAX_PENDING_OP_SIZE = 64
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type JoinCallback = (error?: Error) => void
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type LeaveCallback = JoinCallback
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type Update =
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v: number
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doc: string
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}
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v: number
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doc: string
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op: AnyOperation[]
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meta: {
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type?: string
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source: string
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user_id: string
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ts: number
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}
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hash?: string
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lastV?: number
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}
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type Message = {
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meta: {
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tc: string
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user_id: string
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}
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}
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type ErrorMetadata = Record<string, any>
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function getOpSize(op: AnyOperation) {
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if (isInsertOperation(op)) {
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return op.i.length
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}
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if (isDeleteOperation(op)) {
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return op.d.length
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}
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return 0
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}
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function getShareJsOpSize(shareJsOp: ShareJsOperation) {
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return shareJsOp.reduce((total, op) => total + getOpSize(op), 0)
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}
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// TODO: define these in RangesTracker
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type _RangesTracker = Omit<RangesTracker, 'changes' | 'comments'> & {
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changes: Change<EditOperation>[]
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comments: Change<CommentOperation>[]
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track_changes?: boolean
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}
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export type RangesTrackerWithResolvedThreadIds = _RangesTracker & {
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resolvedThreadIds: Record<ThreadId, boolean>
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}
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export class DocumentContainer extends EventEmitter {
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private connected: boolean
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private wantToBeJoined = false
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private chaosMonkeyTimer: number | null = null
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public track_changes_as: string | null = null
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private joinCallbacks: JoinCallback[] = []
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private leaveCallbacks: LeaveCallback[] = []
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doc?: ShareJsDoc
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cm6?: EditorFacade
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oldInflightOp?: ShareJsOperation
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ranges?: _RangesTracker | RangesTrackerWithResolvedThreadIds
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joined = false
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// This is set and read in useCodeMirrorScope
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docName = ''
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constructor(
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readonly doc_id: string,
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readonly socket: Socket,
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private readonly globalEditorWatchdogManager: EditorWatchdogManager,
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private readonly ideEventEmitter: IdeEventEmitter,
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private readonly eventLog: EventLog,
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private readonly detachDoc: (docId: string, doc: DocumentContainer) => void
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) {
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super()
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this.connected = this.socket.socket.connected
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this.bindToEditorEvents()
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this.bindToSocketEvents()
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}
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attachToCM6(cm6: EditorFacade) {
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this.cm6 = cm6
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if (this.doc) {
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this.doc.attachToCM6(this.cm6)
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}
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this.cm6.on('change', this.checkConsistency)
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}
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detachFromCM6() {
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if (this.doc) {
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this.doc.detachFromCM6()
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}
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if (this.cm6) {
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this.cm6.off('change', this.checkConsistency)
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}
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delete this.cm6
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this.clearChaosMonkey()
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if (this.doc) {
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this.ideEventEmitter.emit('document:closed', this.doc)
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}
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}
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submitOp(...ops: AnyOperation[]) {
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this.doc?.submitOp(ops)
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}
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private checkConsistency = (editor: EditorFacade) => {
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// We've been seeing a lot of errors when I think there shouldn't be
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// any, which may be related to this check happening before the change is
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// applied. If we use a timeout, hopefully we can reduce this.
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window.setTimeout(() => {
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const editorValue = editor?.getValue()
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const sharejsValue = this.doc?.getSnapshot()
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if (editorValue !== sharejsValue) {
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return this.onError(
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new Error('Editor text does not match server text'),
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{},
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editorValue
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)
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}
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}, 0)
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}
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getSnapshot() {
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return this.doc?.getSnapshot()
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}
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getType() {
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return this.doc?.getType()
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}
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getInflightOp(): ShareJsOperation | undefined {
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return this.doc?.getInflightOp()
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}
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getPendingOp(): ShareJsOperation | undefined {
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return this.doc?.getPendingOp()
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}
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getRecentAck() {
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return this.doc?.getRecentAck()
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}
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hasBufferedOps() {
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return this.doc?.hasBufferedOps()
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}
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setTrackingChanges(track_changes: boolean) {
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if (this.doc) {
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this.doc.track_changes = track_changes
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}
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}
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getTrackingChanges() {
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return !!this.doc?.track_changes
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}
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setTrackChangesIdSeeds(id_seeds: TrackChangesIdSeeds) {
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if (this.doc) {
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this.doc.track_changes_id_seeds = id_seeds
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}
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}
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private onUpdateAppliedHandler = (update: any) => this.onUpdateApplied(update)
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private onErrorHandler = (error: Error, message: ErrorMetadata) => {
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// 'otUpdateError' are emitted per doc socket.io room, hence we can be
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// sure that message.doc_id exists.
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if (message.doc_id !== this.doc_id) {
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// This error is for another doc. Do not action it. We could open
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// a modal that has the wrong context on it.
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return
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}
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this.onError(error, message)
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}
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private onDisconnectHandler = () => this.onDisconnect()
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private bindToSocketEvents() {
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this.socket.on('otUpdateApplied', this.onUpdateAppliedHandler)
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this.socket.on('otUpdateError', this.onErrorHandler)
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return this.socket.on('disconnect', this.onDisconnectHandler)
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}
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private unBindFromSocketEvents() {
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this.socket.removeListener('otUpdateApplied', this.onUpdateAppliedHandler)
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this.socket.removeListener('otUpdateError', this.onErrorHandler)
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return this.socket.removeListener('disconnect', this.onDisconnectHandler)
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}
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private bindToEditorEvents() {
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this.ideEventEmitter.on('project:joined', this.onReconnect)
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}
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private unBindFromEditorEvents() {
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this.ideEventEmitter.off('project:joined', this.onReconnect)
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}
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leaveAndCleanUp(cb?: (error?: Error) => void) {
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return this.leave((error?: Error) => {
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this.cleanUp()
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if (cb) cb(error)
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})
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}
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leaveAndCleanUpPromise() {
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return new Promise<void>((resolve, reject) => {
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this.leaveAndCleanUp((error?: Error) => {
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if (error) {
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reject(error)
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} else {
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resolve()
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}
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})
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})
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}
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join(callback?: JoinCallback) {
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this.wantToBeJoined = true
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this.cancelLeave()
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if (this.connected) {
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this.joinDoc(callback)
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} else if (callback) {
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this.joinCallbacks.push(callback)
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}
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}
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leave(callback?: LeaveCallback) {
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this.flush() // force an immediate flush when leaving document
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this.wantToBeJoined = false
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this.cancelJoin()
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if (this.doc?.hasBufferedOps()) {
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debugConsole.log(
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'[leave] Doc has buffered ops, pushing callback for later'
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)
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if (callback) {
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this.leaveCallbacks.push(callback)
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}
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} else if (!this.connected) {
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debugConsole.log('[leave] Not connected, returning now')
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callback?.()
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} else {
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debugConsole.log('[leave] Leaving now')
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this.leaveDoc(callback)
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}
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}
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flush() {
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return this.doc?.flushPendingOps()
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}
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chaosMonkey(line = 0, char = 'a') {
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const orig = char
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let copy: string | null = null
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let pos = 0
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const timer = () => {
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if (copy == null || !copy.length) {
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copy = orig.slice() + ' ' + new Date() + '\n'
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line += Math.random() > 0.1 ? 1 : -2
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if (line < 0) {
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line = 0
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}
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pos = 0
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}
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char = copy[0]
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copy = copy.slice(1)
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if (this.cm6) {
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this.cm6.view.dispatch({
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changes: {
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from: Math.min(pos, this.cm6.view.state.doc.length),
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insert: char,
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},
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})
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}
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pos += 1
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this.chaosMonkeyTimer = window.setTimeout(
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timer,
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100 + (Math.random() < 0.1 ? 1000 : 0)
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)
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}
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timer()
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}
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clearChaosMonkey() {
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const timer = this.chaosMonkeyTimer
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if (timer) {
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this.chaosMonkeyTimer = null
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window.clearTimeout(timer)
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}
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}
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pollSavedStatus() {
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// returns false if doc has ops waiting to be acknowledged or
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// sent that haven't changed since the last time we checked.
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// Otherwise returns true.
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let saved
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const inflightOp = this.getInflightOp()
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const pendingOp = this.getPendingOp()
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const recentAck = this.getRecentAck()
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const pendingOpSize = pendingOp ? getShareJsOpSize(pendingOp) : 0
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if (inflightOp == null && pendingOp == null) {
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// There's nothing going on, this is OK.
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saved = true
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debugConsole.log('[pollSavedStatus] no inflight or pending ops')
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} else if (inflightOp && inflightOp === this.oldInflightOp) {
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// The same inflight op has been sitting unacked since we
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// last checked, this is bad.
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saved = false
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debugConsole.log('[pollSavedStatus] inflight op is same as before')
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} else if (
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pendingOp != null &&
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recentAck &&
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pendingOpSize < MAX_PENDING_OP_SIZE
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) {
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// There is an op waiting to go to server but it is small and
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// within the flushDelay, this is OK for now.
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saved = true
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debugConsole.log(
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'[pollSavedStatus] pending op (small with recent ack) assume ok',
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pendingOp,
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pendingOpSize
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)
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} else {
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// In any other situation, assume the document is unsaved.
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saved = false
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debugConsole.log(
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`[pollSavedStatus] assuming not saved (inflightOp?: ${
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inflightOp != null
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}, pendingOp?: ${pendingOp != null})`
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)
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}
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this.oldInflightOp = inflightOp
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return saved
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}
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private cancelLeave() {
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this.leaveCallbacks = []
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}
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private cancelJoin() {
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this.joinCallbacks = []
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}
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private onUpdateApplied(update: Update) {
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this.eventLog.pushEvent('received-update', {
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doc_id: this.doc_id,
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remote_doc_id: update?.doc,
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wantToBeJoined: this.wantToBeJoined,
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update,
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hasDoc: !!this.doc,
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})
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if (update?.doc === this.doc_id && this.doc != null) {
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this.eventLog.pushEvent('received-update:processing', {
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update,
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})
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// FIXME: change this back to processUpdateFromServer when redis fixed
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this.doc.processUpdateFromServerInOrder(update)
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if (!this.wantToBeJoined) {
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return this.leave()
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}
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}
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}
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private onDisconnect() {
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debugConsole.log('[onDisconnect] disconnecting')
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this.connected = false
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this.joined = false
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return this.doc != null
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? this.doc.updateConnectionState('disconnected')
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: undefined
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}
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private onReconnect = () => {
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debugConsole.log('[onReconnect] reconnected (joined project)')
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this.eventLog.pushEvent('reconnected:afterJoinProject')
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this.connected = true
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if (this.wantToBeJoined || this.doc?.hasBufferedOps()) {
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debugConsole.log(
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`[onReconnect] Rejoining (wantToBeJoined: ${
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this.wantToBeJoined
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} OR hasBufferedOps: ${this.doc?.hasBufferedOps()})`
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)
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this.joinDoc((error?: Error) => {
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if (error) {
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this.onError(error)
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return
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}
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this.doc?.updateConnectionState('ok')
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this.doc?.flushPendingOps()
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this.callJoinCallbacks()
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})
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}
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}
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private callJoinCallbacks() {
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for (const callback of this.joinCallbacks) {
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callback()
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}
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this.joinCallbacks = []
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}
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private joinDoc(callback?: JoinCallback) {
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if (this.doc) {
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this.eventLog.pushEvent('joinDoc:existing', {
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doc_id: this.doc_id,
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version: this.doc.getVersion(),
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})
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return this.socket.emit(
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'joinDoc',
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this.doc_id,
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this.doc.getVersion(),
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{ encodeRanges: true, age: this.doc.getTimeSinceLastServerActivity() },
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(error, docLines, version, updates, ranges) => {
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if (error) {
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callback?.(error)
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return
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}
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this.joined = true
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this.doc?.catchUp(updates)
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this.decodeRanges(ranges)
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this.catchUpRanges(ranges?.changes, ranges?.comments)
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callback?.()
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}
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)
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} else {
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this.eventLog.pushEvent('joinDoc:new', {
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doc_id: this.doc_id,
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})
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this.socket.emit(
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'joinDoc',
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this.doc_id,
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{ encodeRanges: true },
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(error, docLines, version, updates, ranges) => {
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if (error) {
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callback?.(error)
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return
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}
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this.joined = true
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this.eventLog.pushEvent('joinDoc:inited', {
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doc_id: this.doc_id,
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version,
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})
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this.doc = new ShareJsDoc(
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this.doc_id,
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docLines,
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version,
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this.socket,
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this.globalEditorWatchdogManager,
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this.ideEventEmitter,
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this.eventLog
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)
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this.decodeRanges(ranges)
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this.ranges = new RangesTracker(ranges?.changes, ranges?.comments)
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this.bindToShareJsDocEvents()
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callback?.()
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}
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)
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}
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}
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private decodeRanges(ranges: RangesTracker) {
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try {
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if (ranges.changes) {
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for (const change of ranges.changes) {
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if (isInsertOperation(change.op)) {
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change.op.i = decodeUtf8(change.op.i)
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}
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if (isDeleteOperation(change.op)) {
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change.op.d = decodeUtf8(change.op.d)
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}
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}
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}
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return (() => {
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if (!ranges.comments) {
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return []
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}
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return ranges.comments.map((comment: Change<CommentOperation>) =>
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comment.op.c != null
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? (comment.op.c = decodeUtf8(comment.op.c))
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: undefined
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)
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})()
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} catch (err) {
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debugConsole.error(err)
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}
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}
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private leaveDoc(callback?: LeaveCallback) {
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this.eventLog.pushEvent('leaveDoc', {
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doc_id: this.doc_id,
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})
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debugConsole.log('[leaveDoc] Sending leaveDoc request')
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this.socket.emit('leaveDoc', this.doc_id, error => {
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if (error) {
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callback?.(error)
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return
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}
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this.joined = false
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for (const leaveCallback of this.leaveCallbacks) {
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debugConsole.log('[_leaveDoc] Calling buffered callback', leaveCallback)
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leaveCallback(error)
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}
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this.leaveCallbacks = []
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callback?.()
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})
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}
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cleanUp() {
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// if we arrive here from _onError the pending and inflight ops will have been cleared
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if (this.hasBufferedOps()) {
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debugConsole.log(
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`[cleanUp] Document (${this.doc_id}) has buffered ops, refusing to remove from openDocs`
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)
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return // return immediately, do not unbind from events
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}
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this.detachDoc(this.doc_id, this)
|
|
|
|
this.unBindFromEditorEvents()
|
|
this.unBindFromSocketEvents()
|
|
}
|
|
|
|
private bindToShareJsDocEvents() {
|
|
if (!this.doc) {
|
|
return
|
|
}
|
|
|
|
this.doc.on('error', (error: Error, meta: ErrorMetadata) =>
|
|
this.onError(error, meta)
|
|
)
|
|
this.doc.on('externalUpdate', (update: Update) => {
|
|
this.eventLog.pushEvent('externalUpdate', { doc_id: this.doc_id })
|
|
return this.trigger('externalUpdate', update)
|
|
})
|
|
this.doc.on('remoteop', (...ops: AnyOperation[]) => {
|
|
this.eventLog.pushEvent('remoteop', { doc_id: this.doc_id })
|
|
return this.trigger('remoteop', ...ops)
|
|
})
|
|
this.doc.on('op:sent', (op: AnyOperation) => {
|
|
this.eventLog.pushEvent('op:sent', {
|
|
doc_id: this.doc_id,
|
|
op,
|
|
})
|
|
return this.trigger('op:sent')
|
|
})
|
|
this.doc.on('op:acknowledged', (op: AnyOperation) => {
|
|
this.eventLog.pushEvent('op:acknowledged', {
|
|
doc_id: this.doc_id,
|
|
op,
|
|
})
|
|
this.ideEventEmitter.emit('ide:opAcknowledged', {
|
|
doc_id: this.doc_id,
|
|
op,
|
|
})
|
|
return this.trigger('op:acknowledged')
|
|
})
|
|
this.doc.on('op:timeout', (op: AnyOperation) => {
|
|
this.eventLog.pushEvent('op:timeout', {
|
|
doc_id: this.doc_id,
|
|
op,
|
|
})
|
|
this.trigger('op:timeout')
|
|
return this.onError(new Error('op timed out'))
|
|
})
|
|
this.doc.on(
|
|
'flush',
|
|
(inflightOp: AnyOperation, pendingOp: AnyOperation, version: Version) => {
|
|
return this.eventLog.pushEvent('flush', {
|
|
doc_id: this.doc_id,
|
|
inflightOp,
|
|
pendingOp,
|
|
v: version,
|
|
})
|
|
}
|
|
)
|
|
|
|
let docChangedTimeout: number | null = null
|
|
this.doc.on(
|
|
'change',
|
|
(ops: AnyOperation[], oldSnapshot: any, msg: Message) => {
|
|
this.applyOpsToRanges(ops, msg)
|
|
if (docChangedTimeout) {
|
|
window.clearTimeout(docChangedTimeout)
|
|
}
|
|
docChangedTimeout = window.setTimeout(() => {
|
|
window.dispatchEvent(
|
|
new CustomEvent('doc:changed', { detail: { id: this.doc_id } })
|
|
)
|
|
this.ideEventEmitter.emit('doc:changed', { doc_id: this.doc_id })
|
|
}, 50)
|
|
}
|
|
)
|
|
|
|
this.doc.on('flipped_pending_to_inflight', () => {
|
|
return this.trigger('flipped_pending_to_inflight')
|
|
})
|
|
|
|
let docSavedTimeout: number | null
|
|
this.doc.on('saved', () => {
|
|
if (docSavedTimeout) {
|
|
window.clearTimeout(docSavedTimeout)
|
|
}
|
|
docSavedTimeout = window.setTimeout(() => {
|
|
window.dispatchEvent(
|
|
new CustomEvent('doc:saved', { detail: { id: this.doc_id } })
|
|
)
|
|
this.ideEventEmitter.emit('doc:saved', { doc_id: this.doc_id })
|
|
}, 50)
|
|
})
|
|
}
|
|
|
|
private onError(
|
|
error: Error,
|
|
meta: ErrorMetadata = {},
|
|
editorContent?: string
|
|
) {
|
|
meta.doc_id = this.doc_id
|
|
debugConsole.log('ShareJS error', error, meta)
|
|
if (error.message === 'no project_id found on client') {
|
|
debugConsole.log('ignoring error, will wait to join project')
|
|
return
|
|
}
|
|
if (this.doc) {
|
|
this.doc.clearInflightAndPendingOps()
|
|
}
|
|
this.trigger('error', error, meta, editorContent)
|
|
// The clean-up should run after the error is triggered because the error triggers a
|
|
// disconnect. If we run the clean-up first, we remove our event handlers and miss
|
|
// the disconnect event, which means we try to leaveDoc when the connection comes back.
|
|
// This could interfere with the new connection of a new instance of this document.
|
|
this.cleanUp()
|
|
}
|
|
|
|
private applyOpsToRanges(ops: AnyOperation[], msg?: Message) {
|
|
let old_id_seed
|
|
let track_changes_as = null
|
|
const remote_op = msg != null
|
|
if (remote_op && msg?.meta.tc) {
|
|
old_id_seed = this.ranges!.getIdSeed()
|
|
this.ranges!.setIdSeed(msg.meta.tc)
|
|
track_changes_as = msg.meta.user_id
|
|
} else if (!remote_op && this.track_changes_as != null) {
|
|
track_changes_as = this.track_changes_as
|
|
}
|
|
this.ranges!.track_changes = track_changes_as != null
|
|
for (const op of this.filterOps(ops)) {
|
|
this.ranges!.applyOp(op, { user_id: track_changes_as })
|
|
}
|
|
if (old_id_seed != null) {
|
|
this.ranges!.setIdSeed(old_id_seed)
|
|
}
|
|
if (remote_op) {
|
|
// With remote ops, the editor hasn't been updated when we receive this
|
|
// op, so defer updating track changes until it has
|
|
return window.setTimeout(() => this.emit('ranges:dirty'))
|
|
} else {
|
|
return this.emit('ranges:dirty')
|
|
}
|
|
}
|
|
|
|
private catchUpRanges(
|
|
changes: Change<EditOperation>[],
|
|
comments: Change<CommentOperation>[]
|
|
) {
|
|
// We've just been given the current server's ranges, but need to apply any local ops we have.
|
|
// Reset to the server state then apply our local ops again.
|
|
if (changes == null) {
|
|
changes = []
|
|
}
|
|
if (comments == null) {
|
|
comments = []
|
|
}
|
|
this.emit('ranges:clear')
|
|
this.ranges!.changes = changes
|
|
this.ranges!.comments = comments
|
|
this.ranges!.track_changes = this.doc?.track_changes ?? false
|
|
for (const op of this.filterOps(this.doc?.getInflightOp() || [])) {
|
|
this.ranges!.setIdSeed(this.doc?.track_changes_id_seeds?.inflight)
|
|
this.ranges!.applyOp(op, { user_id: this.track_changes_as })
|
|
}
|
|
for (const op of this.filterOps(this.doc?.getPendingOp() || [])) {
|
|
this.ranges!.setIdSeed(this.doc?.track_changes_id_seeds?.pending)
|
|
this.ranges!.applyOp(op, { user_id: this.track_changes_as })
|
|
}
|
|
return this.emit('ranges:redraw')
|
|
}
|
|
|
|
private filterOps(ops: AnyOperation[]) {
|
|
// Read-only token users can't see/edit comment, so we filter out comment
|
|
// ops to avoid highlighting comment ranges.
|
|
if (getMeta('ol-isRestrictedTokenMember')) {
|
|
return ops.filter(op => !isCommentOperation(op))
|
|
} else {
|
|
return ops
|
|
}
|
|
}
|
|
}
|