chore: rely on websockets for autosync if a websocket connection is open (#2672)

packages/services/src/Domain/Api/WebSocketsServiceEvent.ts

@@ -3,4 +3,5 @@ export enum WebSocketsServiceEvent {
   NotificationAddedForUser = 'NotificationAddedForUser',
   MessageSentToUser = 'MessageSentToUser',
   UserInvitedToSharedVault = 'UserInvitedToSharedVault',
+  ItemsChangedOnServer = 'ItemsChangedOnServer',
 }

packages/services/src/Domain/Api/WebsocketsService.ts

@@ -55,6 +55,10 @@ export class WebSocketsService extends AbstractService<WebSocketsServiceEvent, D
     }
   }
 
+  isWebSocketConnectionOpen(): boolean {
+    return this.webSocket?.readyState === WebSocket.OPEN
+  }
+
   public closeWebSocketConnection(): void {
     this.webSocket?.close()
   }
@@ -62,6 +66,9 @@ export class WebSocketsService extends AbstractService<WebSocketsServiceEvent, D
   private onWebSocketMessage(messageEvent: MessageEvent) {
     const eventData = JSON.parse(messageEvent.data)
     switch (eventData.type) {
+      case 'ITEMS_CHANGED_ON_SERVER':
+        void this.notifyEvent(WebSocketsServiceEvent.ItemsChangedOnServer, eventData)
+        break
       case 'USER_ROLES_CHANGED':
         void this.notifyEvent(WebSocketsServiceEvent.UserRoleMessageReceived, eventData)
         break

packages/services/src/Domain/Sync/SyncServiceInterface.ts

@@ -16,7 +16,7 @@ export interface SyncServiceInterface extends AbstractService<SyncEvent> {
   isDatabaseLoaded(): boolean
   onNewDatabaseCreated(): Promise<void>
   loadDatabasePayloads(): Promise<void>
-
+  beginAutoSyncTimer(): void
   resetSyncState(): void
   markAllItemsAsNeedingSyncAndPersist(): Promise<void>
   downloadFirstSync(waitTimeOnFailureMs: number, otherSyncOptions?: Partial<SyncOptions>): Promise<void>

packages/snjs/lib/Application/Application.ts

@@ -137,9 +137,6 @@ import { TYPES } from './Dependencies/Types'
 import { RegisterApplicationServicesEvents } from './Dependencies/DependencyEvents'
 import { Result } from '@standardnotes/domain-core'
 
-/** How often to automatically sync, in milliseconds */
-const DEFAULT_AUTO_SYNC_INTERVAL = 30_000
-
 type LaunchCallback = {
   receiveChallenge: (challenge: Challenge) => void
 }
@@ -165,7 +162,6 @@ export class SNApplication implements ApplicationInterface, AppGroupManagedAppli
 
   private serviceObservers: ObserverRemover[] = []
   private managedSubscribers: ObserverRemover[] = []
-  private autoSyncInterval!: ReturnType<typeof setInterval>
 
   /** True if the result of deviceInterface.openDatabase yields a new database being created */
   private createdNewDatabase = false
@@ -463,7 +459,7 @@ export class SNApplication implements ApplicationInterface, AppGroupManagedAppli
           throw 'Application has been destroyed.'
         }
         await this.handleStage(ApplicationStage.LoadedDatabase_12)
-        this.beginAutoSyncTimer()
+        this.sync.beginAutoSyncTimer()
         await this.sync.sync({
           mode: SyncMode.DownloadFirst,
           source: SyncSource.External,
@@ -503,14 +499,6 @@ export class SNApplication implements ApplicationInterface, AppGroupManagedAppli
     }
   }
 
-  private beginAutoSyncTimer() {
-    this.autoSyncInterval = setInterval(() => {
-      const logger = this.dependencies.get<LoggerInterface>(TYPES.Logger)
-      logger.info('Syncing from autosync')
-      void this.sync.sync({ sourceDescription: 'Auto Sync' })
-    }, DEFAULT_AUTO_SYNC_INTERVAL)
-  }
-
   private async handleStage(stage: ApplicationStage) {
     await this.events.publishSync(
       {
@@ -743,9 +731,6 @@ export class SNApplication implements ApplicationInterface, AppGroupManagedAppli
   public deinit(mode: DeinitMode, source: DeinitSource): void {
     this.dealloced = true
 
-    clearInterval(this.autoSyncInterval)
-    ;(this.autoSyncInterval as unknown) = undefined
-
     for (const uninstallObserver of this.serviceObservers) {
       uninstallObserver()
     }

packages/snjs/lib/Application/Dependencies/Dependencies.ts

@@ -1331,6 +1331,15 @@ export class Dependencies {
       )
     })
 
+    this.factory.set(TYPES.WebSocketsService, () => {
+      return new WebSocketsService(
+        this.get<DiskStorageService>(TYPES.DiskStorageService),
+        this.options.webSocketUrl,
+        this.get<WebSocketApiService>(TYPES.WebSocketApiService),
+        this.get<InternalEventBus>(TYPES.InternalEventBus),
+      )
+    })
+
     this.factory.set(TYPES.SyncService, () => {
       return new SyncService(
         this.get<ItemManager>(TYPES.ItemManager),
@@ -1347,6 +1356,7 @@ export class Dependencies {
           sleepBetweenBatches: this.options.sleepBetweenBatches,
         },
         this.get<Logger>(TYPES.Logger),
+        this.get<WebSocketsService>(TYPES.WebSocketsService),
         this.get<InternalEventBus>(TYPES.InternalEventBus),
       )
     })
@@ -1390,15 +1400,6 @@ export class Dependencies {
       )
     })
 
-    this.factory.set(TYPES.WebSocketsService, () => {
-      return new WebSocketsService(
-        this.get<DiskStorageService>(TYPES.DiskStorageService),
-        this.options.webSocketUrl,
-        this.get<WebSocketApiService>(TYPES.WebSocketApiService),
-        this.get<InternalEventBus>(TYPES.InternalEventBus),
-      )
-    })
-
     this.factory.set(TYPES.WebSocketApiService, () => {
       return new WebSocketApiService(this.get<WebSocketServer>(TYPES.WebSocketServer))
     })

packages/snjs/lib/Application/Dependencies/DependencyEvents.ts

@@ -40,6 +40,7 @@ export function RegisterApplicationServicesEvents(container: Dependencies, event
   events.addEventHandler(container.get(TYPES.SubscriptionManager), ApplicationEvent.UserRolesChanged)
   events.addEventHandler(container.get(TYPES.SubscriptionManager), SessionEvent.Restored)
   events.addEventHandler(container.get(TYPES.SyncService), IntegrityEvent.IntegrityCheckCompleted)
+  events.addEventHandler(container.get(TYPES.SyncService), WebSocketsServiceEvent.ItemsChangedOnServer)
   events.addEventHandler(container.get(TYPES.UserService), AccountEvent.SignedInOrRegistered)
   events.addEventHandler(container.get(TYPES.VaultInviteService), ApplicationEvent.Launched)
   events.addEventHandler(container.get(TYPES.VaultInviteService), SyncEvent.ReceivedSharedVaultInvites)

packages/snjs/lib/Services/Sync/SyncService.ts

@@ -84,6 +84,8 @@ import {
   SyncEventReceivedAsymmetricMessagesData,
   SyncOpStatus,
   ApplicationSyncOptions,
+  WebSocketsServiceEvent,
+  WebSocketsService,
 } from '@standardnotes/services'
 import { OfflineSyncResponse } from './Offline/Response'
 import {
@@ -98,6 +100,7 @@ import { ContentType } from '@standardnotes/domain-core'
 
 const DEFAULT_MAJOR_CHANGE_THRESHOLD = 15
 const INVALID_SESSION_RESPONSE_STATUS = 401
+const DEFAULT_AUTO_SYNC_INTERVAL = 30_000
 
 /** Content types appearing first are always mapped first */
 const ContentTypeLocalLoadPriorty = [
@@ -149,6 +152,9 @@ export class SyncService
   public lastSyncInvokationPromise?: Promise<unknown>
   public currentSyncRequestPromise?: Promise<void>
 
+  private autoSyncInterval?: NodeJS.Timer
+  private wasNotifiedOfItemsChangeOnServer = false
+
   constructor(
     private itemManager: ItemManager,
     private sessionManager: SessionManager,
@@ -161,6 +167,7 @@ export class SyncService
     private identifier: string,
     private readonly options: ApplicationSyncOptions,
     private logger: LoggerInterface,
+    private sockets: WebSocketsService,
     protected override internalEventBus: InternalEventBusInterface,
   ) {
     super(internalEventBus)
@@ -187,6 +194,10 @@ export class SyncService
 
   public override deinit(): void {
     this.dealloced = true
+    if (this.autoSyncInterval) {
+      clearInterval(this.autoSyncInterval)
+    }
+    ;(this.autoSyncInterval as unknown) = undefined
     ;(this.sessionManager as unknown) = undefined
     ;(this.itemManager as unknown) = undefined
     ;(this.encryptionService as unknown) = undefined
@@ -349,6 +360,28 @@ export class SyncService
     this.opStatus.setDatabaseLoadStatus(0, 0, true)
   }
 
+  beginAutoSyncTimer(): void {
+    this.autoSyncInterval = setInterval(this.autoSync.bind(this), DEFAULT_AUTO_SYNC_INTERVAL)
+  }
+
+  private autoSync(): void {
+    if (!this.sockets.isWebSocketConnectionOpen()) {
+      this.logger.debug('WebSocket connection is closed, doing autosync')
+
+      void this.sync({ sourceDescription: 'Auto Sync' })
+
+      return
+    }
+
+    if (this.wasNotifiedOfItemsChangeOnServer) {
+      this.logger.debug('Was notified of items changed on server, doing autosync')
+
+      this.wasNotifiedOfItemsChangeOnServer = false
+
+      void this.sync({ sourceDescription: 'WebSockets Event - Items Changed On Server' })
+    }
+  }
+
   private async processPayloadBatch(
     batch: FullyFormedPayloadInterface<ItemContent>[],
     currentPosition?: number,
@@ -1400,8 +1433,15 @@ export class SyncService
   }
 
   async handleEvent(event: InternalEventInterface): Promise<void> {
-    if (event.type === IntegrityEvent.IntegrityCheckCompleted) {
+    switch (event.type) {
-      await this.handleIntegrityCheckEventResponse(event.payload as IntegrityEventPayload)
+      case IntegrityEvent.IntegrityCheckCompleted:
+        await this.handleIntegrityCheckEventResponse(event.payload as IntegrityEventPayload)
+        break
+      case WebSocketsServiceEvent.ItemsChangedOnServer:
+        this.wasNotifiedOfItemsChangeOnServer = true
+        break
+      default:
+        break
     }
   }
 

packages/snjs/package.json

@@ -38,7 +38,7 @@
     "@standardnotes/api": "workspace:*",
     "@standardnotes/common": "^1.50.0",
     "@standardnotes/domain-core": "^1.40.0",
-    "@standardnotes/domain-events": "^2.122.0",
+    "@standardnotes/domain-events": "^2.138.1",
     "@standardnotes/encryption": "workspace:*",
     "@standardnotes/features": "workspace:*",
     "@standardnotes/files": "workspace:*",

yarn.lock

@@ -6610,7 +6610,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@standardnotes/domain-events@npm:2.138.1":
+"@standardnotes/domain-events@npm:2.138.1, @standardnotes/domain-events@npm:^2.138.1":
   version: 2.138.1
   resolution: "@standardnotes/domain-events@npm:2.138.1"
   dependencies:
@@ -6620,16 +6620,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@standardnotes/domain-events@npm:^2.122.0":
-  version: 2.122.0
-  resolution: "@standardnotes/domain-events@npm:2.122.0"
-  dependencies:
-    "@standardnotes/predicates": 1.6.9
-    "@standardnotes/security": 1.12.0
-  checksum: 9dd2f02f1c9c91b3380d0db88dba3e504aaa14b7e58dcb519611dd8b15edb27c111805eb0e34f1612751fb59428296a216e39b5711892f6c8f1fc1f057e61c50
-  languageName: node
-  linkType: hard
-
 "@standardnotes/dynamic-theme@npm:^1.2.8":
   version: 1.2.8
   resolution: "@standardnotes/dynamic-theme@npm:1.2.8"
@@ -6992,13 +6982,6 @@ __metadata:
   languageName: unknown
   linkType: soft
 
-"@standardnotes/predicates@npm:1.6.9":
-  version: 1.6.9
-  resolution: "@standardnotes/predicates@npm:1.6.9"
-  checksum: 3b931aaccd763c98d043487e90624507265a350d5656ef55a3355b69fbdae2f718ecd2bde1e402d8fc49355404f91220df99b0a80c081e8da0d515eea1def9e7
-  languageName: node
-  linkType: hard
-
 "@standardnotes/predicates@npm:1.8.1":
   version: 1.8.1
   resolution: "@standardnotes/predicates@npm:1.8.1"
@@ -7081,16 +7064,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"@standardnotes/security@npm:1.12.0":
-  version: 1.12.0
-  resolution: "@standardnotes/security@npm:1.12.0"
-  dependencies:
-    jsonwebtoken: ^9.0.0
-    reflect-metadata: ^0.1.13
-  checksum: 96d42255e79fc2cf4c52f3d370c04ae00296673993e1c0cea2356ca4a6c934d22d6100ba95f9ad602ffb72ee686367ef4a263dc6a6c51795d9b61dc835e635cd
-  languageName: node
-  linkType: hard
-
 "@standardnotes/security@npm:1.17.2, @standardnotes/security@npm:^1.17.2":
   version: 1.17.2
   resolution: "@standardnotes/security@npm:1.17.2"
@@ -7239,7 +7212,7 @@ __metadata:
     "@standardnotes/api": "workspace:*"
     "@standardnotes/common": ^1.50.0
     "@standardnotes/domain-core": ^1.40.0
-    "@standardnotes/domain-events": ^2.122.0
+    "@standardnotes/domain-events": ^2.138.1
     "@standardnotes/encryption": "workspace:*"
     "@standardnotes/features": "workspace:*"
     "@standardnotes/files": "workspace:*"