power loss

This commit is contained in:
Andras Schmelczer 2026-09-21 21:29:52 +01:00
commit d56084e4bc

View file

@ -1,62 +1,246 @@
import type { PersistenceProvider } from "./persistence/persistence";
import type { HistoryEntry, HistoryStats } from "./tracing/sync-history";
import { SyncHistory } from "./tracing/sync-history";
import { Logger, LogLevel, LogLine } from "./tracing/logger";
import type { RelativePath, StoredDatabase } from "./persistence/database";
import { Database } from "./persistence/database";
import * as Sentry from "@sentry/browser";
import type { SyncSettings } from "./persistence/settings";
import { DEFAULT_SETTINGS, Settings } from "./persistence/settings";
import { SyncService } from "./services/sync-service";
import { Syncer } from "./sync-operations/syncer";
import { setUpTelemetry } from "./utils/set-up-telemetry";
import type { PersistenceProvider } from "./persistence/persistence";
import { Database, type StoredDatabase } from "./persistence/database";
import {
Settings,
DEFAULT_SETTINGS,
type SyncSettings
} from "./persistence/settings";
import type { FileSystemOperations } from "./file-operations/filesystem-operations";
import { FileOperations } from "./file-operations/file-operations";
import { Logger, LogLevel } from "./tracing/logger";
import { SyncHistory } from "./tracing/sync-history";
import { FetchController } from "./services/fetch-controller";
import { UnrestrictedSyncer } from "./sync-operations/unrestricted-syncer";
import { rateLimit } from "./utils/rate-limit";
import type { NetworkConnectionStatus } from "./types/network-connection-status";
import { DocumentSyncStatus } from "./types/document-sync-status";
import { WebSocketManager } from "./services/websocket-manager";
import { createClientId } from "./utils/create-client-id";
import { CursorTracker } from "./sync-operations/cursor-tracker";
import type { CursorSpan } from "./services/types/CursorSpan";
import type { MaybeOutdatedClientCursors } from "./types/maybe-outdated-client-cursors";
import { FileChangeNotifier } from "./sync-operations/file-change-notifier";
import { FixedSizeDocumentCache } from "./utils/data-structures/fix-sized-cache";
import { setUpTelemetry } from "./utils/set-up-telemetry";
import { DIFF_CACHE_SIZE_MB } from "./consts";
import { SyncService } from "./services/sync-service";
import { ServerConfig } from "./services/server-config";
import type { EventListeners } from "./utils/data-structures/event-listeners";
import { WebSocketManager } from "./services/websocket-manager";
import { Syncer } from "./sync-operations/syncer";
import { CursorTracker } from "./sync-operations/cursor-tracker";
import { FileChangeNotifier } from "./sync-operations/file-change-notifier";
import { createClientId } from "./utils/create-client-id";
import { DocumentSyncStatus } from "./types/document-sync-status";
import type { CursorSpan } from "./services/types/CursorSpan";
import { isInternalPath } from "./utils/portable-path";
import { FixedSizeDocumentCache } from "./utils/data-structures/fix-sized-cache";
import { globsToRegexes } from "./utils/globs-to-regexes";
import { Lock } from "./utils/data-structures/locks";
import type { LocalChange } from "./sync-operations/local-changes";
type StoredClient = Partial<{
settings: Partial<SyncSettings>;
database: Partial<StoredDatabase>;
localChanges: LocalChange[];
localChangesVaultKey: string;
historyCheckpoint: { vaultKey: string; checkpoint?: string };
}>;
const vaultKey = (settings: SyncSettings): string =>
JSON.stringify([
settings.remoteUri.replace(/\/$/u, ""),
settings.vaultName
]);
export class SyncClient {
private hasStartedOfflineSync = false;
private hasFinishedOfflineSync = false;
private hasStarted = false;
private hasBeenDestroyed = false;
private readonly lifecycle = new Lock();
private destroying?: Promise<void>;
private started = false;
private destroyed = false;
private unloadTelemetry?: () => void;
private isDestroying = false;
private readonly eventUnsubscribers: (() => void)[] = [];
private readonly unsubscribeLog: () => void;
private constructor(
public readonly logger: Logger,
private readonly history: SyncHistory,
private readonly settings: Settings,
private readonly database: Database,
private readonly syncer: Syncer,
private readonly webSocketManager: WebSocketManager,
public readonly logger: Logger,
private readonly fetchController: FetchController,
private readonly serverConfig: ServerConfig,
private readonly cursorTracker: CursorTracker,
private readonly fileChangeNotifier: FileChangeNotifier,
private readonly contentCache: FixedSizeDocumentCache,
private readonly fileOperations: FileOperations,
private readonly serverConfig: ServerConfig,
private readonly persistence: PersistenceProvider<
Partial<{
settings: Partial<SyncSettings>;
database: Partial<StoredDatabase>;
}>
>
) {}
private readonly persistence: PersistenceProvider<StoredClient>
) {
syncer.onServerHistoryChanged.add(() => {
cursorTracker.reset();
});
syncer.onReadyForEvents.add(() => {
if (
this.started &&
!this.destroyed &&
settings.getSettings().isSyncEnabled
)
webSocketManager.start();
});
this.unsubscribeLog = logger.onLogEmitted.add((log) => {
if (log.level === LogLevel.ERROR && Sentry.isInitialized())
Sentry.captureMessage(log.message);
});
}
public static async create({
fs,
persistence,
fetch,
webSocket
}: {
fs: FileSystemOperations;
persistence: PersistenceProvider<StoredClient>;
fetch?: typeof globalThis.fetch;
webSocket?: typeof globalThis.WebSocket;
/** V4 preserves bytes and line endings as stored, on every platform. */
nativeLineEndings?: string;
}): Promise<SyncClient> {
const logger = new Logger();
let stored = (await persistence.load()) ?? {};
let saving: Promise<void> = Promise.resolve();
let reloadBeforeSave = false;
// Settings and engine state share a store. Serialize complete durable
// replacements so one cannot overwrite a newer save from the other.
const save = async (update: StoredClient): Promise<void> => {
const operation = saving.then(async () => {
if (reloadBeforeSave) {
stored = (await persistence.load()) ?? {};
reloadBeforeSave = false;
}
const next = { ...stored, ...structuredClone(update) };
try {
await persistence.save(next);
stored = next;
} catch (error) {
// A failed save may have committed. Do not let a queued
// settings/notification save roll back that engine state.
reloadBeforeSave = true;
throw error;
}
});
saving = operation.catch(() => {});
return operation;
};
const settings = new Settings(logger, stored.settings, async (data) =>
save({ settings: data })
);
const database = new Database(
logger,
stored.database,
async (data) => save({ database: data }),
vaultKey(settings.getSettings()),
async () => {
await saving;
stored = (await persistence.load()) ?? {};
return stored.database as StoredDatabase | undefined;
}
);
if (
stored.localChanges?.length &&
stored.localChangesVaultKey !== vaultKey(settings.getSettings())
) {
throw new Error(
"Offline notifications belong to another vault; use a separate state store"
);
}
const fetchController = new FetchController(
settings.getSettings().isSyncEnabled,
logger
);
const deviceId = createClientId();
const service = new SyncService(
deviceId,
fetchController,
settings,
logger,
fetch,
{
get: () =>
stored.historyCheckpoint?.vaultKey ===
vaultKey(settings.getSettings())
? stored.historyCheckpoint.checkpoint
: undefined,
save: async (checkpoint) =>
save({
historyCheckpoint: {
vaultKey: vaultKey(settings.getSettings()),
checkpoint
}
})
}
);
const serverConfig = new ServerConfig(service);
const notifier = new FileChangeNotifier();
const localChanges = stored.localChanges ?? [];
let syncer: Syncer;
const files = new FileOperations(
fs,
database,
serverConfig,
(paths) => {
for (const path of paths) notifier.notifyOfFileChange(path);
},
{
entries: () => localChanges,
flush: async () => syncer?.flushLocalChanges()
},
(path, size) => {
const current = settings.getSettings();
return (
size > current.maxFileSizeMB * 1024 * 1024 ||
globsToRegexes(current.ignorePatterns, logger).some(
(pattern) => pattern.test(path)
)
);
}
);
const websocket = new WebSocketManager(
deviceId,
logger,
settings,
webSocket
);
const history = new SyncHistory(logger);
const contentCache = new FixedSizeDocumentCache(
settings.getSettings().diffCacheSizeMB * 1024 * 1024
);
syncer = new Syncer(
deviceId,
logger,
database,
settings,
service,
websocket,
files,
serverConfig,
history,
contentCache,
{
entries: localChanges,
save: async (entries) =>
save({
localChanges: entries,
localChangesVaultKey: vaultKey(settings.getSettings())
})
}
);
const cursors = new CursorTracker(database, websocket, files, notifier);
return new SyncClient(
logger,
history,
settings,
database,
syncer,
websocket,
fetchController,
serverConfig,
cursors,
notifier,
contentCache,
persistence
);
}
private check(): void {
if (this.destroyed) throw new Error("SyncClient has been destroyed");
}
public get documentCount(): number {
return this.database.length;
@ -66,478 +250,229 @@ export class SyncClient {
return this.webSocketManager.isWebSocketConnected;
}
public get onSyncHistoryUpdated(): EventListeners<
(stats: HistoryStats) => unknown
> {
this.checkIfDestroyed("onSyncHistoryUpdated getter");
public get onSyncHistoryUpdated() {
return this.history.onHistoryUpdated;
}
public get onSettingsChanged(): EventListeners<
(newSettings: SyncSettings, oldSettings: SyncSettings) => unknown
> {
this.checkIfDestroyed("onSettingsChanged getter");
public get onSettingsChanged() {
return this.settings.onSettingsChanged;
}
public get onRemainingOperationsCountChanged(): EventListeners<
(remainingOperationsCount: number) => unknown
> {
this.checkIfDestroyed("onRemainingOperationsCountChanged getter");
public get onRemainingOperationsCountChanged() {
return this.syncer.onRemainingOperationsCountChanged;
}
public get onWebSocketStatusChanged(): EventListeners<
(isConnected: boolean) => unknown
> {
this.checkIfDestroyed("onWebSocketStatusChanged getter");
public get onWebSocketStatusChanged() {
return this.webSocketManager.onWebSocketStatusChanged;
}
public get onRemoteCursorsUpdated(): EventListeners<
(cursors: MaybeOutdatedClientCursors[]) => unknown
> {
this.checkIfDestroyed("onRemoteCursorsUpdated getter");
public get onRemoteCursorsUpdated() {
return this.cursorTracker.onRemoteCursorsUpdated;
}
public static async create({
fs,
persistence,
fetch,
webSocket,
nativeLineEndings = "\n"
}: {
fs: FileSystemOperations;
persistence: PersistenceProvider<
Partial<{
settings: Partial<SyncSettings>;
database: Partial<StoredDatabase>;
}>
>;
fetch?: typeof globalThis.fetch;
webSocket?: typeof globalThis.WebSocket;
nativeLineEndings?: string;
}): Promise<SyncClient> {
const logger = new Logger();
const deviceId = createClientId();
logger.info(`Creating SyncClient with client id ${deviceId}`);
const history = new SyncHistory(logger);
let state = (await persistence.load()) ?? {
settings: undefined,
database: undefined
};
const settings = new Settings(
logger,
state.settings,
async (data): Promise<void> => {
state = { ...state, settings: data };
// we're not rate-limiting settings saves as (1) we need to initialise the settings to know the rate limit
// and (2) settings changes are infrequent enough that rate-limiting is not necessary
await persistence.save(state);
}
);
const rateLimitedSave = rateLimit(
persistence.save,
() => settings.getSettings().minimumSaveIntervalMs
);
const database = new Database(
logger,
state.database,
async (data): Promise<void> => {
state = { ...state, database: data };
await rateLimitedSave(state);
}
);
const fetchController = new FetchController(
settings.getSettings().isSyncEnabled,
logger
);
const syncService = new SyncService(
deviceId,
fetchController,
settings,
logger,
fetch
);
const serverConfig = new ServerConfig(syncService);
const fileOperations = new FileOperations(
logger,
database,
fs,
serverConfig,
nativeLineEndings
);
const contentCache = new FixedSizeDocumentCache(
1024 * 1024 * DIFF_CACHE_SIZE_MB
);
const unrestrictedSyncer = new UnrestrictedSyncer(
logger,
database,
settings,
syncService,
fileOperations,
history,
contentCache,
serverConfig
);
const webSocketManager = new WebSocketManager(
deviceId,
logger,
settings,
webSocket
);
const syncer = new Syncer(
deviceId,
logger,
database,
settings,
syncService,
webSocketManager,
fileOperations,
unrestrictedSyncer
);
const fileChangeNotifier = new FileChangeNotifier();
const cursorTracker = new CursorTracker(
database,
webSocketManager,
fileOperations,
fileChangeNotifier
);
const client = new SyncClient(
history,
settings,
database,
syncer,
webSocketManager,
logger,
fetchController,
cursorTracker,
fileChangeNotifier,
contentCache,
fileOperations,
serverConfig,
persistence
);
logger.info("SyncClient created successfully");
return client;
}
public async start(): Promise<void> {
this.checkIfDestroyed("start");
if (this.hasStarted) {
throw new Error("SyncClient has already been started");
}
this.hasStarted = true;
if (
!this.unloadTelemetry &&
this.settings.getSettings().enableTelemetry
) {
this.unloadTelemetry = setUpTelemetry();
}
this.eventUnsubscribers.push(
this.settings.onSettingsChanged.add((newSettings, oldSettings) => {
if (oldSettings.isSyncEnabled != newSettings.isSyncEnabled) {
this.fetchController.canFetch = newSettings.isSyncEnabled;
}
})
);
this.eventUnsubscribers.push(
this.logger.onLogEmitted.add((log): void => {
if (log.level === LogLevel.ERROR && Sentry.isInitialized()) {
Sentry.captureMessage(log.message);
}
})
);
this.eventUnsubscribers.push(
this.settings.onSettingsChanged.add(
this.onSettingsChange.bind(this)
)
);
if (this.settings.getSettings().isSyncEnabled) {
this.logger.info("Starting SyncClient");
await this.startSyncing();
this.logger.info("SyncClient has successfully started");
}
}
/**
* Reload settings from disk overriding current in-memory settings.
* Missing values will be filled in from DEFAULT_SETTINGS rather than
* retaining current in-memory settings.
*/
public async reloadSettings(): Promise<void> {
this.checkIfDestroyed("reloadSettings");
const state = (await this.persistence.load()) ?? {
settings: undefined
};
const settings = {
...DEFAULT_SETTINGS,
...(state.settings ?? {})
};
await this.setSettings(settings);
}
public async checkConnection(): Promise<NetworkConnectionStatus> {
this.checkIfDestroyed("checkConnection");
const server = await this.serverConfig.checkConnection(true);
return {
isSuccessful: server.isSuccessful,
serverMessage: server.message,
isWebSocketConnected: this.webSocketManager.isWebSocketConnected
};
}
public getHistoryEntries(): readonly HistoryEntry[] {
public getHistoryEntries() {
return this.history.entries;
}
/**
* Wait for the in-flight operations to finish, reset all tracking,
* and the local database but retain the settings.
* The SyncClient can be used again after calling this method.
*/
public async reset(): Promise<void> {
this.checkIfDestroyed("reset");
this.logger.info(
"Stopping SyncClient to apply changed connection settings"
);
await this.pause();
// clear all local state
this.logger.info("Resetting SyncClient's local state");
this.database.reset();
await this.database.save(); // ensure the new database reads as empty
this.resetInMemoryState();
this.hasStartedOfflineSync = false;
this.hasFinishedOfflineSync = false;
this.serverConfig.reset();
await this.startSyncing();
}
public getSettings(): SyncSettings {
return this.settings.getSettings();
}
public async setSetting<T extends keyof SyncSettings>(
key: T,
value: SyncSettings[T]
): Promise<void> {
this.checkIfDestroyed("setSetting");
await this.settings.setSetting(key, value);
}
public async setSettings(value: Partial<SyncSettings>): Promise<void> {
this.checkIfDestroyed("setSettings");
await this.settings.setSettings(value);
}
public async syncLocallyCreatedFile(
relativePath: RelativePath
): Promise<void> {
this.checkIfDestroyed("syncLocallyCreatedFile");
this.fileChangeNotifier.notifyOfFileChange(relativePath);
return this.syncer.syncLocallyCreatedFile(relativePath);
}
public async syncLocallyDeletedFile(
relativePath: RelativePath
): Promise<void> {
this.checkIfDestroyed("syncLocallyDeletedFile");
this.fileChangeNotifier.notifyOfFileChange(relativePath);
return this.syncer.syncLocallyDeletedFile(relativePath);
}
public async syncLocallyUpdatedFile({
oldPath,
relativePath
}: {
oldPath?: RelativePath;
relativePath: RelativePath;
}): Promise<void> {
this.checkIfDestroyed("syncLocallyUpdatedFile");
this.fileChangeNotifier.notifyOfFileChange(relativePath);
return this.syncer.syncLocallyUpdatedFile({
oldPath,
relativePath
});
}
public getDocumentSyncingStatus(
relativePath: RelativePath
): DocumentSyncStatus {
this.checkIfDestroyed("getDocumentSyncingStatus");
if (!this.settings.getSettings().isSyncEnabled) {
return DocumentSyncStatus.SYNCING_IS_DISABLED;
}
if (!this.syncer.isFirstSyncComplete || !this.hasFinishedOfflineSync) {
return DocumentSyncStatus.SYNCING;
}
const document =
this.database.getLatestDocumentByRelativePath(relativePath);
if (document === undefined) {
return DocumentSyncStatus.SYNCING;
}
return document.updates.length > 0
? DocumentSyncStatus.SYNCING
: DocumentSyncStatus.UP_TO_DATE;
}
public async updateLocalCursors(
documentToCursors: Record<RelativePath, CursorSpan[]>
): Promise<void> {
this.checkIfDestroyed("updateLocalCursors");
await this.cursorTracker.sendLocalCursorsToServer(documentToCursors);
}
public async waitUntilFinished(): Promise<void> {
this.checkIfDestroyed("waitUntilIdle");
await this.syncer.waitUntilFinished();
await this.webSocketManager.waitUntilFinished();
await this.database.save(); // flush all changes to disk
}
/**
* Completely destroy the SyncClient, cancelling all in-progress operations.
* After calling this method, the SyncClient cannot be used again.
*/
public async destroy(): Promise<void> {
this.checkIfDestroyed("destroy");
// Prevent concurrent destroy calls
if (this.isDestroying) {
this.logger.warn(
"destroy() called while already destroying, ignoring"
public async start(): Promise<void> {
await this.lifecycle.withLock(async () => {
this.check();
if (this.started)
throw new Error("SyncClient has already been started");
await this.syncer.recoverLocalState();
await this.database.bindVault(
vaultKey(this.settings.getSettings())
);
return;
}
this.isDestroying = true;
// cancel everything that's in progress
await this.pause();
this.hasBeenDestroyed = true;
this.resetInMemoryState();
// Clean up event listeners to prevent memory leaks
this.eventUnsubscribers.forEach((unsubscribe) => {
unsubscribe();
this.started = true;
this.configureTelemetry();
if (this.settings.getSettings().isSyncEnabled) await this.resume();
});
this.eventUnsubscribers.length = 0;
this.logger.info("SyncClient has been successfully disposed");
this.unloadTelemetry?.();
}
private async startSyncing(): Promise<void> {
this.checkIfDestroyed("startSyncing");
private async resume(): Promise<void> {
if (this.destroyed) return;
if (!this.settings.getSettings().isSyncEnabled) return;
await this.database.bindVault(vaultKey(this.settings.getSettings()));
this.fetchController.finishReset();
await this.serverConfig.initialize();
this.webSocketManager.start();
if (!this.hasStartedOfflineSync) {
this.hasStartedOfflineSync = true;
await this.syncer.scheduleSyncForOfflineChanges();
}
this.hasFinishedOfflineSync = true;
this.fetchController.canFetch = true;
this.syncer.start();
await this.syncer.waitUntilFinished();
}
private async pause(): Promise<void> {
const stopped = this.syncer.stop();
this.fetchController.startReset();
await this.webSocketManager.stop();
await this.waitUntilFinished();
await stopped;
}
private resetInMemoryState(): void {
this.history.reset();
this.contentCache.reset();
// don't reset the logger
this.cursorTracker.reset();
this.syncer.reset();
this.fileOperations.reset();
/** Restart transports; never discard pending requests or filesystem journals. */
public async reset(): Promise<void> {
await this.lifecycle.withLock(async () => {
this.check();
await this.pause();
this.serverConfig.reset();
this.cursorTracker.reset();
await this.syncer.retryRejectedRequests();
if (this.started && this.settings.getSettings().isSyncEnabled)
await this.resume();
});
}
private async onSettingsChange(
newSettings: SyncSettings,
oldSettings: SyncSettings
): Promise<void> {
this.checkIfDestroyed("onSettingsChange");
public async setSettings(change: Partial<SyncSettings>): Promise<void> {
const update = structuredClone(change);
const notification = await this.lifecycle.withLock(async () => {
this.check();
const old = this.settings.getSettings();
const next = { ...old, ...update };
if (
vaultKey(next) !== vaultKey(old) &&
(this.started ||
this.database.state.initialized ||
this.database.state.bootstrap ||
this.database.state.pending ||
this.database.state.application ||
this.syncer.hasLocalChanges ||
Object.keys(this.database.state.local).length)
)
throw new Error(
"Changing vaults requires a separate state store and client; pending recovery data must not be reset"
);
if (
newSettings.vaultName !== oldSettings.vaultName ||
newSettings.remoteUri !== oldSettings.remoteUri
) {
await this.reset();
}
if (newSettings.isSyncEnabled !== oldSettings.isSyncEnabled) {
if (newSettings.isSyncEnabled) {
await this.startSyncing();
} else {
await this.pause();
try {
if (this.started) await this.pause();
await this.database.recoverPersistence();
await this.settings.setSettings(update, false);
await this.syncer.retryRejectedRequests();
this.contentCache.resize(next.diffCacheSizeMB * 1024 * 1024);
await this.database.bindVault(vaultKey(next));
} catch (error) {
this.serverConfig.reset();
this.contentCache.resize(
this.settings.getSettings().diffCacheSizeMB * 1024 * 1024
);
this.configureTelemetry();
if (this.started && this.settings.getSettings().isSyncEnabled)
await this.resume().catch((resumeError: unknown) => {
this.logger.error(
`Settings recovery could not resume sync: ${String(resumeError)}`
);
});
throw error;
}
}
this.serverConfig.reset();
this.configureTelemetry();
if (this.started && next.isSyncEnabled) await this.resume();
return [this.settings.getSettings(), old] as const;
});
await this.settings.onSettingsChanged.triggerAsync(...notification);
}
if (newSettings.diffCacheSizeMB !== oldSettings.diffCacheSizeMB) {
this.contentCache.resize(newSettings.diffCacheSizeMB * 1024 * 1024);
}
public async setSetting<K extends keyof SyncSettings>(
key: K,
value: SyncSettings[K]
): Promise<void> {
await this.setSettings({ [key]: value });
}
if (newSettings.enableTelemetry !== oldSettings.enableTelemetry) {
if (newSettings.enableTelemetry) {
this.unloadTelemetry = setUpTelemetry();
} else {
public async reloadSettings(): Promise<void> {
const stored = await this.persistence.load();
await this.setSettings({ ...DEFAULT_SETTINGS, ...stored?.settings });
}
public async checkConnection() {
const result = await this.serverConfig.checkConnection(true);
return {
isSuccessful: result.isSuccessful,
serverMessage: result.message,
isWebSocketConnected: this.isWebSocketConnected
};
}
/** Notifications enqueue work. Use waitUntilFinished() to await convergence. */
public async syncLocallyCreatedFile(path: string): Promise<void> {
this.check();
if (isInternalPath(path)) return;
this.fileChangeNotifier.notifyOfFileChange(path);
await this.syncer.syncLocallyCreatedFile(path);
}
public async syncLocallyDeletedFile(path: string): Promise<void> {
this.check();
if (isInternalPath(path)) return;
this.fileChangeNotifier.notifyOfFileChange(path);
await this.syncer.syncLocallyDeletedFile(path);
}
public async syncLocallyUpdatedFile(change: {
oldPath?: string;
relativePath: string;
}): Promise<void> {
this.check();
if (
isInternalPath(change.relativePath) ||
(change.oldPath && isInternalPath(change.oldPath))
)
return;
this.fileChangeNotifier.notifyOfFileChange(change.relativePath);
await this.syncer.syncLocallyUpdatedFile(change);
}
public async updateLocalCursors(
cursors: Record<string, CursorSpan[]>
): Promise<void> {
this.check();
await this.cursorTracker.sendLocalCursorsToServer(cursors);
}
public getDocumentSyncingStatus(path: string): DocumentSyncStatus {
this.check();
if (!this.settings.getSettings().isSyncEnabled)
return DocumentSyncStatus.SYNCING_IS_DISABLED;
return this.syncer.isDocumentUpToDate(path)
? DocumentSyncStatus.UP_TO_DATE
: DocumentSyncStatus.SYNCING;
}
public async waitUntilFinished(): Promise<void> {
this.check();
await this.syncer.waitUntilFinished();
}
private configureTelemetry(): void {
if (
this.settings.getSettings().enableTelemetry &&
typeof window !== "undefined"
) {
this.unloadTelemetry ??= setUpTelemetry();
} else {
this.unloadTelemetry?.();
this.unloadTelemetry = undefined;
}
}
public async destroy(): Promise<void> {
if (this.destroying) return this.destroying;
this.destroyed = true;
// Interrupt a start/reset awaiting network progress before waiting for
// its lifecycle operation to finish.
this.fetchController.startReset();
const stopped = this.syncer.stop();
this.destroying = this.lifecycle.withLock(async () => {
try {
await this.webSocketManager.stop();
await stopped;
await this.syncer.flushLocalChanges();
} finally {
this.cursorTracker.reset();
this.unsubscribeLog();
this.unloadTelemetry?.();
}
}
}
private checkIfDestroyed(origin: string): void {
if (this.hasBeenDestroyed) {
throw new Error(
`SyncClient has been destroyed and can no longer be used; called from ${origin}`
);
}
});
return this.destroying;
}
}