@fluidframework/shared-object-base - npm Package Compare versions

Comparing version 2.90.0 to 2.91.0

CHANGELOG.md

 # @fluidframework/shared-object-base
 
+## 2.91.0
+
+Dependency updates only.
+
 ## 2.90.0
@@ -4,0 +8,0 @@

dist/packageVersion.d.ts

@@ -8,3 +8,3 @@ /*!
 export declare const pkgName = "@fluidframework/shared-object-base";
-export declare const pkgVersion = "2.90.0";
+export declare const pkgVersion = "2.91.0";
 //# sourceMappingURL=packageVersion.d.ts.map

dist/packageVersion.js

@@ -11,3 +11,3 @@ "use strict";
 exports.pkgName = "@fluidframework/shared-object-base";
-exports.pkgVersion = "2.90.0";
+exports.pkgVersion = "2.91.0";
 //# sourceMappingURL=packageVersion.js.map

dist/packageVersion.js.map

@@ -1,1 +0,1 @@
-{"version":3,"file":"packageVersion.js","sourceRoot":"","sources":["../src/packageVersion.ts"],"names":[],"mappings":";AAAA;;;;;GAKG;;;AAEU,QAAA,OAAO,GAAG,oCAAoC,CAAC;AAC/C,QAAA,UAAU,GAAG,QAAQ,CAAC","sourcesContent":["/*!\n * Copyright (c) Microsoft Corporation and contributors. All rights reserved.\n * Licensed under the MIT License.\n *\n * THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY\n */\n\nexport const pkgName = \"@fluidframework/shared-object-base\";\nexport const pkgVersion = \"2.90.0\";\n"]}
+{"version":3,"file":"packageVersion.js","sourceRoot":"","sources":["../src/packageVersion.ts"],"names":[],"mappings":";AAAA;;;;;GAKG;;;AAEU,QAAA,OAAO,GAAG,oCAAoC,CAAC;AAC/C,QAAA,UAAU,GAAG,QAAQ,CAAC","sourcesContent":["/*!\n * Copyright (c) Microsoft Corporation and contributors. All rights reserved.\n * Licensed under the MIT License.\n *\n * THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY\n */\n\nexport const pkgName = \"@fluidframework/shared-object-base\";\nexport const pkgVersion = \"2.91.0\";\n"]}

dist/sharedObject.d.ts

@@ -172,14 +172,13 @@ /*!
     /**
-     * Derived classes must override this to do custom processing on a 'bunch' of remote messages.
+     * Apply a 'bunch' of sequenced ops to this shared object.
      * @remarks
-     * A 'bunch' is a group of messages that have the following properties:
-     * - They are all part of the same grouped batch, which entails:
-     *   - They are contiguous in sequencing order.
-     *   - They are all from the same client.
-     *   - They are all based on the same reference sequence number.
-     *   - They are not interleaved with messages from other clients.
-     * - They are not interleaved with messages from other DDS in the container.
-     * Derived classes should override this if they need to do custom processing on a 'bunch' of remote messages.
-     * @param messageCollection - The collection of messages to process.
+     * See {@link @fluidframework/runtime-definitions#IRuntimeMessageCollection} for what a "bunch" is.
      *
+     * These ops have been sequenced by the service and now have a finalized ordering.
+     * They may be local or remote ops, but they cannot be ops that are still pending acknowledgement from the service.
+     *
+     * @param messageCollection - The 'bunch' of sequenced ops to apply to this shared object.
+     * @privateRemarks
+     * TODO:Performance: AB#59783: Allowing this to process more messages at once (more than the current definition of 'bunch') could improve performance of clients which fall behind,
+     * which is one of the most important performance sensitive scenarios.
      */
@@ -186,0 +185,0 @@ protected abstract processMessagesCore(messagesCollection: IRuntimeMessageCollection): void;

dist/sharedObject.d.ts.map

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dist/sharedObject.js.map

@@ -1,1 +0,1 @@
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* Copyright (c) Microsoft Corporation and contributors. All rights reserved.\n * Licensed under the MIT License.\n */\n\nimport type { EventEmitterEventType } from \"@fluid-internal/client-utils\";\nimport { AttachState } from \"@fluidframework/container-definitions\";\nimport type { IDeltaManager } from \"@fluidframework/container-definitions/internal\";\nimport type { ITelemetryBaseProperties, ErasedType } from \"@fluidframework/core-interfaces\";\nimport type {\n\tIFluidHandleInternal,\n\tIFluidLoadable,\n} from \"@fluidframework/core-interfaces/internal\";\nimport { assert } from \"@fluidframework/core-utils/internal\";\nimport type {\n\tIChannelServices,\n\tIChannelStorageService,\n\tIChannel,\n\tIChannelAttributes,\n\tIChannelFactory,\n\tIFluidDataStoreRuntime,\n\tIDeltaHandler,\n\tIFluidDataStoreRuntimeInternalConfig,\n} from \"@fluidframework/datastore-definitions/internal\";\nimport type {\n\tIDocumentMessage,\n\tISequencedDocumentMessage,\n} from \"@fluidframework/driver-definitions/internal\";\nimport {\n\ttype IExperimentalIncrementalSummaryContext,\n\ttype ISummaryTreeWithStats,\n\ttype ITelemetryContext,\n\ttype IGarbageCollectionData,\n\tblobCountPropertyName,\n\ttotalBlobSizePropertyName,\n\ttype IRuntimeMessageCollection,\n\ttype IRuntimeMessagesContent,\n} from \"@fluidframework/runtime-definitions/internal\";\nimport {\n\ttoDeltaManagerInternal,\n\ttype TelemetryContext,\n} from \"@fluidframework/runtime-utils/internal\";\nimport {\n\ttype ITelemetryLoggerExt,\n\tDataProcessingError,\n\tEventEmitterWithErrorHandling,\n\ttype MonitoringContext,\n\tSampledTelemetryHelper,\n\tcreateChildLogger,\n\tloggerToMonitoringContext,\n\ttagCodeArtifacts,\n\ttype ICustomData,\n\ttype IFluidErrorBase,\n\tLoggingError,\n} from \"@fluidframework/telemetry-utils/internal\";\nimport { v4 as uuid } from \"uuid\";\n\nimport { GCHandleVisitor } from \"./gcHandleVisitor.js\";\nimport { SharedObjectHandle } from \"./handle.js\";\nimport { FluidSerializer, type IFluidSerializer } from \"./serializer.js\";\nimport type { ISharedObject, ISharedObjectEvents } from \"./types.js\";\nimport { bindHandles, makeHandlesSerializable, parseHandles } from \"./utils.js\";\n\n/**\n * Custom telemetry properties used in {@link SharedObjectCore} to instantiate {@link TelemetryEventBatcher} class.\n * This interface is used to define the properties that will be passed to the {@link TelemetryEventBatcher.measure} function\n * which is called in the {@link SharedObjectCore.process} method.\n */\ninterface ProcessTelemetryProperties {\n\tsequenceDifference: number;\n}\n\n/**\n * Base class from which all {@link ISharedObject|shared objects} derive.\n * @remarks\n * This class implements common behaviors that implementations of {@link ISharedObject} may want to reuse.\n * Even more such behaviors are implemented in the {@link SharedObject} class.\n * @privateRemarks\n * Currently some documentation (like the above) implies that this is supposed to be the only implementation of ISharedObject, which is both package-exported and not `@sealed`.\n * This situation should be clarified to indicate if other implementations of ISharedObject are allowed and just currently don't exist,\n * or if the intention is that no other implementations should exist and creating some might break things.\n * As part of this, any existing implementations of ISharedObject (via SharedObjectCore or otherwise) in use by legacy API users will need to be considered.\n *\n * TODO:\n * This class should eventually be made internal, as custom subclasses of it outside this repository are intended to be made unsupported in the future.\n * @legacy @beta\n */\nexport abstract class SharedObjectCore<\n\t\tTEvent extends ISharedObjectEvents = ISharedObjectEvents,\n\t>\n\textends EventEmitterWithErrorHandling<TEvent>\n\timplements ISharedObject<TEvent>\n{\n\tpublic get IFluidLoadable(): this {\n\t\treturn this;\n\t}\n\n\tprivate readonly opProcessingHelper: SampledTelemetryHelper<\n\t\tvoid,\n\t\tProcessTelemetryProperties\n\t>;\n\tprivate readonly callbacksHelper: SampledTelemetryHelper<boolean>;\n\n\t/**\n\t * The handle referring to this SharedObject\n\t */\n\tpublic readonly handle: IFluidHandleInternal;\n\n\t/**\n\t * Telemetry logger for the shared object\n\t */\n\tprotected readonly logger: ITelemetryLoggerExt;\n\tprivate readonly mc: MonitoringContext;\n\n\t/**\n\t * Connection state\n\t */\n\tprivate _connected = false;\n\n\t/**\n\t * Services used by the shared object\n\t */\n\tprivate services: IChannelServices | undefined;\n\n\t/**\n\t * True if the dds is bound to its parent.\n\t */\n\tprivate _isBoundToContext: boolean = false;\n\n\t/**\n\t * Tracks error that closed this object.\n\t */\n\tprivate closeError?: ReturnType<typeof DataProcessingError.wrapIfUnrecognized>;\n\n\t/**\n\t * Gets the connection state\n\t * @returns The state of the connection\n\t */\n\tpublic get connected(): boolean {\n\t\treturn this._connected;\n\t}\n\n\tconstructor(\n\t\t/**\n\t\t * The ID of the shared object.\n\t\t */\n\t\tpublic id: string,\n\t\t/**\n\t\t * The runtime instance that contains the Shared Object.\n\t\t */\n\t\tprotected runtime: IFluidDataStoreRuntime,\n\t\t/**\n\t\t * The attributes of the Shared Object.\n\t\t */\n\t\tpublic readonly attributes: IChannelAttributes,\n\t) {\n\t\tsuper((event: EventEmitterEventType, e: unknown) =>\n\t\t\tthis.eventListenerErrorHandler(event, e),\n\t\t);\n\n\t\tassert(!id.includes(\"/\"), 0x304 /* Id cannot contain slashes */);\n\n\t\tthis.handle = new SharedObjectHandle(this, id, runtime);\n\n\t\tthis.logger = createChildLogger({\n\t\t\tlogger: runtime.logger,\n\t\t\tproperties: {\n\t\t\t\tall: {\n\t\t\t\t\tsharedObjectId: uuid(),\n\t\t\t\t\t...tagCodeArtifacts({\n\t\t\t\t\t\tddsType: this.attributes.type,\n\t\t\t\t\t}),\n\t\t\t\t},\n\t\t\t},\n\t\t});\n\t\tthis.mc = loggerToMonitoringContext(this.logger);\n\n\t\tconst { opProcessingHelper, callbacksHelper } = this.setUpSampledTelemetryHelpers();\n\t\tthis.opProcessingHelper = opProcessingHelper;\n\t\tthis.callbacksHelper = callbacksHelper;\n\t}\n\n\t/**\n\t * Accessor for `this.runtime`'s {@link @fluidframework/datastore-definitions#IFluidDataStoreRuntime.deltaManager} as a {@link @fluidframework/container-definitions/internal#IDeltaManager}\n\t */\n\tprotected get deltaManager(): IDeltaManager<ISequencedDocumentMessage, IDocumentMessage> {\n\t\treturn toDeltaManagerInternal(this.runtime.deltaManager);\n\t}\n\n\t/**\n\t * This function is only supposed to be called from SharedObjectCore's constructor and\n\t * depends on a few things being set already. assert() calls make sure of it.\n\t * @returns The telemetry sampling helpers, so the constructor can be the one to assign them\n\t * to variables to avoid complaints from TypeScript.\n\t */\n\tprivate setUpSampledTelemetryHelpers(): {\n\t\topProcessingHelper: SampledTelemetryHelper<void, ProcessTelemetryProperties>;\n\t\tcallbacksHelper: SampledTelemetryHelper<boolean>;\n\t} {\n\t\tassert(\n\t\t\tthis.mc !== undefined && this.logger !== undefined,\n\t\t\t0x349 /* this.mc and/or this.logger has not been set */,\n\t\t);\n\t\tconst opProcessingHelper = new SampledTelemetryHelper<void, ProcessTelemetryProperties>(\n\t\t\t{\n\t\t\t\teventName: \"ddsOpProcessing\",\n\t\t\t\tcategory: \"performance\",\n\t\t\t},\n\t\t\tthis.logger,\n\t\t\tthis.mc.config.getNumber(\"Fluid.SharedObject.OpProcessingTelemetrySampling\") ?? 1000,\n\t\t\ttrue,\n\t\t\tnew Map<string, ITelemetryBaseProperties>([\n\t\t\t\t[\"local\", { localOp: true }],\n\t\t\t\t[\"remote\", { localOp: false }],\n\t\t\t]),\n\t\t);\n\t\tconst callbacksHelper = new SampledTelemetryHelper<boolean>(\n\t\t\t{\n\t\t\t\teventName: \"ddsEventCallbacks\",\n\t\t\t\tcategory: \"performance\",\n\t\t\t},\n\t\t\tthis.logger,\n\t\t\tthis.mc.config.getNumber(\"Fluid.SharedObject.DdsCallbacksTelemetrySampling\") ?? 1000,\n\t\t\ttrue,\n\t\t);\n\n\t\tthis.runtime.once(\"dispose\", () => {\n\t\t\tthis.callbacksHelper.dispose();\n\t\t\tthis.opProcessingHelper.dispose();\n\t\t});\n\n\t\treturn { opProcessingHelper, callbacksHelper };\n\t}\n\n\t/**\n\t * Marks this objects as closed. Any attempt to change it (local changes or processing remote ops)\n\t * would result in same error thrown. If called multiple times, only first error is remembered.\n\t * @param error - error object that is thrown whenever an attempt is made to modify this object\n\t */\n\tprivate closeWithError(error: IFluidErrorBase | undefined): void {\n\t\t// eslint-disable-next-line @typescript-eslint/prefer-nullish-coalescing -- using ??= could change behavior if value is falsy\n\t\tif (this.closeError === undefined) {\n\t\t\tthis.closeError = error;\n\t\t}\n\t}\n\n\t/**\n\t * Verifies that this object is not closed via closeWithError(). If it is, throws an error used to close it.\n\t */\n\tprivate verifyNotClosed(): void {\n\t\tif (this.closeError !== undefined) {\n\t\t\tthrow this.closeError;\n\t\t}\n\t}\n\n\t/**\n\t * Event listener handler helper that can be used to react to exceptions thrown from event listeners\n\t * It wraps error with DataProcessingError, closes this object and throws resulting error.\n\t * See closeWithError() for more details\n\t * Ideally such situation never happens, as consumers of DDS should never throw exceptions\n\t * in event listeners (i.e. catch any of the issues and make determination on how to handle it).\n\t * When such exceptions propagate through, most likely data model is no longer consistent, i.e.\n\t * DDS state does not match what user sees. Because of it DDS moves to \"corrupted state\" and does not\n\t * allow processing of ops or local changes, which very quickly results in container closure.\n\t */\n\tprivate eventListenerErrorHandler(event: EventEmitterEventType, e: unknown): void {\n\t\tconst error = DataProcessingError.wrapIfUnrecognized(\n\t\t\te,\n\t\t\t\"SharedObjectEventListenerException\",\n\t\t);\n\t\terror.addTelemetryProperties({ emittedEventName: String(event) });\n\n\t\tthis.closeWithError(error);\n\t\tthrow error;\n\t}\n\n\tprivate setBoundAndHandleAttach(): void {\n\t\t// Ensure didAttach is only called once, and we only register a single event\n\t\t// but we still call setConnectionState as our existing mocks don't\n\t\t// always propagate connection state\n\t\tthis.setBoundAndHandleAttach = () => this.setConnectionState(this.runtime.connected);\n\t\tthis._isBoundToContext = true;\n\t\t// eslint-disable-next-line unicorn/consistent-function-scoping\n\t\tconst runDidAttach: () => void = () => {\n\t\t\t// Allows objects to do any custom processing if it is attached.\n\t\t\tthis.didAttach();\n\t\t\tthis.setConnectionState(this.runtime.connected);\n\t\t};\n\t\tif (this.isAttached()) {\n\t\t\trunDidAttach();\n\t\t} else {\n\t\t\tthis.runtime.once(\"attaching\", runDidAttach);\n\t\t}\n\t}\n\n\t/**\n\t * A shared object, after construction, can either be loaded in the case that it is already part of\n\t * a shared document. Or later attached if it is being newly added.\n\t * @param services - Services used by the shared object\n\t */\n\tpublic async load(services: IChannelServices): Promise<void> {\n\t\tthis.services = services;\n\t\t// set this before load so that isAttached is true\n\t\t// for attached runtimes when load core is running\n\t\tthis._isBoundToContext = true;\n\t\tawait this.loadCore(services.objectStorage);\n\t\tthis.attachDeltaHandler();\n\t\tthis.setBoundAndHandleAttach();\n\t}\n\n\t/**\n\t * Initializes the object as a local, non-shared object. This object can become shared after\n\t * it is attached to the document.\n\t */\n\tpublic initializeLocal(): void {\n\t\tthis.initializeLocalCore();\n\t}\n\n\t/**\n\t * {@inheritDoc (ISharedObject:interface).bindToContext}\n\t */\n\tpublic bindToContext(): void {\n\t\t// ensure the method only runs once by removing the implementation\n\t\t// without this the method suffers from re-entrancy issues\n\t\tthis.bindToContext = () => {};\n\t\tif (!this._isBoundToContext) {\n\t\t\tthis.runtime.bindChannel(this);\n\t\t\t// must set after bind channel so isAttached doesn't report true\n\t\t\t// before binding is complete\n\t\t\tthis.setBoundAndHandleAttach();\n\t\t}\n\t}\n\n\t/**\n\t * {@inheritDoc @fluidframework/datastore-definitions#(IChannel:interface).connect}\n\t */\n\tpublic connect(services: IChannelServices): void {\n\t\t// handle the case where load is called\n\t\t// before connect; loading detached data stores\n\t\tif (this.services === undefined) {\n\t\t\tthis.services = services;\n\t\t\tthis.attachDeltaHandler();\n\t\t}\n\n\t\tthis.setBoundAndHandleAttach();\n\t}\n\n\t/**\n\t * {@inheritDoc @fluidframework/datastore-definitions#(IChannel:interface).isAttached}\n\t */\n\tpublic isAttached(): boolean {\n\t\treturn this._isBoundToContext && this.runtime.attachState !== AttachState.Detached;\n\t}\n\n\t/**\n\t * {@inheritDoc @fluidframework/datastore-definitions#(IChannel:interface).getAttachSummary}\n\t */\n\tpublic abstract getAttachSummary(\n\t\tfullTree?: boolean,\n\t\ttrackState?: boolean,\n\t\ttelemetryContext?: ITelemetryContext,\n\t): ISummaryTreeWithStats;\n\n\t/**\n\t * {@inheritDoc @fluidframework/datastore-definitions#(IChannel:interface).summarize}\n\t */\n\tpublic abstract summarize(\n\t\tfullTree?: boolean,\n\t\ttrackState?: boolean,\n\t\ttelemetryContext?: ITelemetryContext,\n\t): Promise<ISummaryTreeWithStats>;\n\n\t/**\n\t * {@inheritDoc @fluidframework/datastore-definitions#(IChannel:interface).getGCData}\n\t */\n\tpublic abstract getGCData(fullGC?: boolean): IGarbageCollectionData;\n\n\t/**\n\t * Allows the distributed data type to perform custom loading\n\t * @param services - Storage used by the shared object\n\t */\n\tprotected abstract loadCore(services: IChannelStorageService): Promise<void>;\n\n\t/**\n\t * Allows the distributed data type to perform custom local loading.\n\t */\n\tprotected initializeLocalCore(): void {\n\t\treturn;\n\t}\n\n\t/**\n\t * Allows the distributive data type the ability to perform custom processing once an attach has happened.\n\t * Also called after non-local data type get loaded.\n\t */\n\tprotected didAttach(): void {\n\t\treturn;\n\t}\n\n\t/* eslint-disable jsdoc/check-indentation */\n\t/**\n\t * Derived classes must override this to do custom processing on a 'bunch' of remote messages.\n\t * @remarks\n\t * A 'bunch' is a group of messages that have the following properties:\n\t * - They are all part of the same grouped batch, which entails:\n\t *   - They are contiguous in sequencing order.\n\t *   - They are all from the same client.\n\t *   - They are all based on the same reference sequence number.\n\t *   - They are not interleaved with messages from other clients.\n\t * - They are not interleaved with messages from other DDS in the container.\n\t * Derived classes should override this if they need to do custom processing on a 'bunch' of remote messages.\n\t * @param messageCollection - The collection of messages to process.\n\t *\n\t */\n\t/* eslint-enable jsdoc/check-indentation */\n\tprotected abstract processMessagesCore(messagesCollection: IRuntimeMessageCollection): void;\n\n\t/**\n\t * Called when the object has disconnected from the delta stream.\n\t */\n\n\tprotected abstract onDisconnect(): void;\n\n\t/**\n\t * The serializer to serialize / parse handles.\n\t */\n\tprotected abstract get serializer(): IFluidSerializer;\n\n\t/**\n\t * Submits a message by the local client to the runtime.\n\t * @param content - Content of the message. Note: handles contained in the\n\t * message object should not be encoded in any way\n\t * @param localOpMetadata - The local metadata associated with the message. This is kept locally by the runtime\n\t * and not sent to the server. This will be sent back when this message is received back from the server. This is\n\t * also sent if we are asked to resubmit the message.\n\t */\n\tprotected submitLocalMessage(content: unknown, localOpMetadata: unknown = undefined): void {\n\t\tthis.verifyNotClosed();\n\t\tif (this.isAttached()) {\n\t\t\t// NOTE: We may also be encoding in the ContainerRuntime layer.\n\t\t\t// Once the layer-compat window passes we can remove the encoding codepath here altogether\n\t\t\tconst onlyBind =\n\t\t\t\t(this.runtime as IFluidDataStoreRuntimeInternalConfig)\n\t\t\t\t\t.submitMessagesWithoutEncodingHandles === true;\n\t\t\tconst contentToSubmit = onlyBind\n\t\t\t\t? bindHandles(content, this.handle)\n\t\t\t\t: makeHandlesSerializable(content, this.serializer, this.handle);\n\n\t\t\t// eslint-disable-next-line @typescript-eslint/no-non-null-assertion\n\t\t\tthis.services!.deltaConnection.submit(contentToSubmit, localOpMetadata);\n\t\t}\n\t}\n\n\t/**\n\t * Marks this object as dirty so that it is part of the next summary. It is called by a SharedSummaryBlock\n\t * that want to be part of summary but does not generate ops.\n\t */\n\tprotected dirty(): void {\n\t\tif (!this.isAttached()) {\n\t\t\treturn;\n\t\t}\n\n\t\t// eslint-disable-next-line @typescript-eslint/no-non-null-assertion\n\t\tthis.services!.deltaConnection.dirty();\n\t}\n\n\t/**\n\t * Called when the object has fully connected to the delta stream\n\t * Default implementation for DDS, override if different behavior is required.\n\t */\n\tprotected onConnect(): void {}\n\n\t/**\n\t * Called when a message has to be resubmitted. This typically happens after a reconnection for unacked messages.\n\t * The default implementation here is to resubmit the same message. The client can override if different behavior\n\t * is required. It can choose to resubmit the same message, submit different / multiple messages or not submit\n\t * anything at all.\n\t * @param content - The content of the original message.\n\t * @param localOpMetadata - The local metadata associated with the original message.\n\t */\n\tprotected reSubmitCore(content: unknown, localOpMetadata: unknown): void {\n\t\tthis.submitLocalMessage(content, localOpMetadata);\n\t}\n\n\t/**\n\t * Called when a message has to be resubmitted but its content should be \"squashed\" if any subsequent pending changes\n\t * override the content in the fashion described on {@link @fluidframework/datastore-definitions#IDeltaHandler.reSubmit}.\n\t *\n\t * @param content - The content of the original message.\n\t * @param localOpMetadata - The local metadata associated with the original message.\n\t */\n\tprotected reSubmitSquashed(content: unknown, localOpMetadata: unknown): void {\n\t\tconst allowStagingModeWithoutSquashing =\n\t\t\tloggerToMonitoringContext(this.logger).config.getBoolean(\n\t\t\t\t\"Fluid.SharedObject.AllowStagingModeWithoutSquashing\",\n\t\t\t) ??\n\t\t\t(this.runtime.options.allowStagingModeWithoutSquashing as boolean | undefined) ??\n\t\t\ttrue;\n\t\tif (allowStagingModeWithoutSquashing) {\n\t\t\tthis.reSubmitCore(content, localOpMetadata);\n\t\t} else {\n\t\t\tthis.throwUnsupported(\"reSubmitSquashed\");\n\t\t}\n\t}\n\n\t/**\n\t * Promises that are waiting for an ack from the server before resolving should use this instead of new Promise.\n\t * It ensures that if something changes that will interrupt that ack (e.g. the FluidDataStoreRuntime disposes),\n\t * the Promise will reject.\n\t * If runtime is disposed when this call is made, executor is not run and promise is rejected right away.\n\t */\n\tprotected async newAckBasedPromise<T>(\n\t\texecutor: (\n\t\t\tresolve: (value: T | PromiseLike<T>) => void,\n\t\t\treject: (reason?: unknown) => void,\n\t\t) => void,\n\t): Promise<T> {\n\t\tlet rejectBecauseDispose: () => void;\n\t\treturn new Promise<T>((resolve, reject) => {\n\t\t\trejectBecauseDispose = () =>\n\t\t\t\treject(\n\t\t\t\t\tnew Error(\"FluidDataStoreRuntime disposed while this ack-based Promise was pending\"),\n\t\t\t\t);\n\n\t\t\tif (this.runtime.disposed) {\n\t\t\t\trejectBecauseDispose();\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tthis.runtime.on(\"dispose\", rejectBecauseDispose);\n\t\t\texecutor(resolve, reject);\n\t\t}).finally(() => {\n\t\t\t// Note: rejectBecauseDispose will never be undefined here\n\t\t\tthis.runtime.off(\"dispose\", rejectBecauseDispose);\n\t\t});\n\t}\n\n\tprivate attachDeltaHandler(): void {\n\t\t// Services should already be there in case we are attaching delta handler.\n\t\tassert(\n\t\t\tthis.services !== undefined,\n\t\t\t0x07a /* \"Services should be there to attach delta handler\" */,\n\t\t);\n\t\t// attachDeltaHandler is only called after services is assigned\n\t\tthis.services.deltaConnection.attach({\n\t\t\tprocessMessages: (messagesCollection: IRuntimeMessageCollection) => {\n\t\t\t\tthis.processMessages(messagesCollection);\n\t\t\t},\n\t\t\tsetConnectionState: (connected: boolean) => {\n\t\t\t\tthis.setConnectionState(connected);\n\t\t\t},\n\t\t\treSubmit: (content: unknown, localOpMetadata: unknown, squash: boolean) => {\n\t\t\t\tthis.reSubmit(content, localOpMetadata, squash);\n\t\t\t},\n\t\t\tapplyStashedOp: (content: unknown): void => {\n\t\t\t\tthis.applyStashedOp(parseHandles(content, this.serializer));\n\t\t\t},\n\t\t\trollback: (content: unknown, localOpMetadata: unknown) => {\n\t\t\t\tthis.rollback(content, localOpMetadata);\n\t\t\t},\n\t\t} satisfies IDeltaHandler);\n\t}\n\n\t/**\n\t * Set the state of connection to services.\n\t * @param connected - true if connected, false otherwise.\n\t */\n\tprivate setConnectionState(connected: boolean): void {\n\t\t// only an attached shared object can transition its\n\t\t// connected state. This is defensive, as some\n\t\t// of our test harnesses don't handle this correctly\n\t\tif (!this.isAttached() || this._connected === connected) {\n\t\t\t// Not changing state, nothing the same.\n\t\t\treturn;\n\t\t}\n\n\t\t// Should I change the state at the end? So that we *can't* send new stuff before we send old?\n\t\tthis._connected = connected;\n\n\t\tif (connected) {\n\t\t\t// Call this for now so that DDSes like ConsensusOrderedCollection that maintain their own pending\n\t\t\t// messages will work.\n\t\t\tthis.onConnect();\n\t\t} else {\n\t\t\t// Things that are true now...\n\t\t\t// - if we had a connection we can no longer send messages over it\n\t\t\t// - if we had outbound messages some may or may not be ACK'd. Won't know until next message\n\t\t\t//\n\t\t\t// - nack could get a new msn - but might as well do it in the join?\n\t\t\tthis.onDisconnect();\n\t\t}\n\t}\n\n\t/* eslint-disable jsdoc/check-indentation */\n\t/**\n\t * Process a bunch of messages for this shared object. A bunch is group of messages that have the following properties:\n\t * - They are all part of the same grouped batch, which entails:\n\t *   - They are contiguous in sequencing order.\n\t *   - They are all from the same client.\n\t *   - They are all based on the same reference sequence number.\n\t *   - They are not interleaved with messages from other clients.\n\t * - They are not interleaved with messages from other DDS in the container.\n\t * @param messageCollection - The collection of messages to process.\n\t *\n\t */\n\t/* eslint-enable jsdoc/check-indentation */\n\tprivate processMessages(messagesCollection: IRuntimeMessageCollection): void {\n\t\tthis.verifyNotClosed(); // This will result in container closure.\n\n\t\tconst { envelope, local, messagesContent } = messagesCollection;\n\n\t\t// Decode any handles in the contents before processing the messages.\n\t\tconst decodedMessagesContent: IRuntimeMessagesContent[] = [];\n\t\tfor (const { contents, localOpMetadata, clientSequenceNumber } of messagesContent) {\n\t\t\tconst decodedMessageContent: IRuntimeMessagesContent = {\n\t\t\t\tcontents: parseHandles(contents, this.serializer),\n\t\t\t\tlocalOpMetadata,\n\t\t\t\tclientSequenceNumber,\n\t\t\t};\n\t\t\tdecodedMessagesContent.push(decodedMessageContent);\n\t\t}\n\n\t\tconst emitEvents = (event: \"pre-op\" | \"op\"): void => {\n\t\t\tfor (const { contents, clientSequenceNumber } of decodedMessagesContent) {\n\t\t\t\tconst message: ISequencedDocumentMessage = {\n\t\t\t\t\t...envelope,\n\t\t\t\t\tcontents,\n\t\t\t\t\tclientSequenceNumber,\n\t\t\t\t};\n\t\t\t\tthis.emitInternal(event, message, local);\n\t\t\t}\n\t\t};\n\n\t\temitEvents(\"pre-op\");\n\t\tthis.opProcessingHelper.measure(\n\t\t\t(): ICustomData<ProcessTelemetryProperties> => {\n\t\t\t\tconst decodedMessagesCollection: IRuntimeMessageCollection = {\n\t\t\t\t\tenvelope,\n\t\t\t\t\tlocal,\n\t\t\t\t\tmessagesContent: decodedMessagesContent,\n\t\t\t\t};\n\t\t\t\tthis.processMessagesCore(decodedMessagesCollection);\n\t\t\t\tconst telemetryProperties: ProcessTelemetryProperties = {\n\t\t\t\t\tsequenceDifference: envelope.sequenceNumber - envelope.referenceSequenceNumber,\n\t\t\t\t};\n\t\t\t\treturn {\n\t\t\t\t\tcustomData: telemetryProperties,\n\t\t\t\t};\n\t\t\t},\n\t\t\tlocal ? \"local\" : \"remote\",\n\t\t);\n\t\temitEvents(\"op\");\n\t}\n\n\t/**\n\t * Called when a message has to be resubmitted. This typically happens for unacked messages after a\n\t * reconnection.\n\t * @param content - The content of the original message.\n\t * @param localOpMetadata - The local metadata associated with the original message.\n\t * @param squash - If `true`, the message will be resubmitted in a squashed form. If `false`,\n\t * the legacy behavior (no squashing) will be used.\n\t */\n\tprivate reSubmit(content: unknown, localOpMetadata: unknown, squash: boolean): void {\n\t\tif (squash) {\n\t\t\tthis.reSubmitSquashed(content, localOpMetadata);\n\t\t} else {\n\t\t\tthis.reSubmitCore(content, localOpMetadata);\n\t\t}\n\t}\n\n\t/**\n\t * Revert an op\n\t */\n\tprotected rollback(content: unknown, localOpMetadata: unknown): void {\n\t\tthis.throwUnsupported(\"rollback\");\n\t}\n\n\t/**\n\t * Apply changes from the provided op content just as if a local client has made the change,\n\t * including submitting the op. Used when rehydrating an attached container\n\t * with pending changes. The rehydration process replays all remote ops\n\t * and applies stashed ops after the remote op with a sequence number\n\t * that matches that of the stashed op is applied. This ensures\n\t * stashed ops are applied at the same state they were originally created.\n\t *\n\t * It is possible that stashed ops have been sent in the past, and will be found when\n\t * the shared object catches up with remotes ops.\n\t * So this prepares the SharedObject for seeing potentially seeing the ACK.\n\t * If no matching remote op is found, all the applied stashed ops will go\n\t * through the normal resubmit flow upon reconnection, which allows the dds\n\t * to rebase them to the latest state, and then resubmit them.\n\t *\n\t * @param content - Contents of a stashed op.\n\t */\n\tprotected abstract applyStashedOp(content: unknown): void;\n\n\t/**\n\t * Emit an event. This function is only intended for use by DDS classes that extend SharedObject/SharedObjectCore,\n\t * specifically to emit events that are part of the public interface of the DDS (i.e. those that can have listeners\n\t * attached to them by the consumers of the DDS). It should not be called from outside the class or to emit events\n\t * which are only internal to the DDS. Support for calling it from outside the DDS instance might be removed in the\n\t * future.\n\t * @param event - The event to emit.\n\t * @param args - Arguments to pass to the event listeners.\n\t * @returns `true` if the event had listeners, `false` otherwise.\n\t */\n\tpublic emit(event: EventEmitterEventType, ...args: any[]): boolean {\n\t\treturn this.callbacksHelper.measure(() => {\n\t\t\t// eslint-disable-next-line @typescript-eslint/no-unsafe-argument\n\t\t\treturn super.emit(event, ...args);\n\t\t});\n\t}\n\n\t/**\n\t * Use to emit events inside {@link SharedObjectCore}, with no telemetry measurement\n\t * done on the duration of the callbacks. Simply calls `super.emit()`.\n\t * @param event - Event to emit\n\t * @param args - Arguments for the event\n\t * @returns Whatever `super.emit()` returns.\n\t */\n\tprivate emitInternal(event: EventEmitterEventType, ...args: unknown[]): boolean {\n\t\treturn super.emit(event, ...args);\n\t}\n\n\tprivate throwUnsupported(featureName: string): never {\n\t\tthrow new LoggingError(\"Unsupported DDS feature\", {\n\t\t\tfeatureName,\n\t\t\t...tagCodeArtifacts({ ddsType: this.attributes.type }),\n\t\t});\n\t}\n}\n\n/**\n * Helper for implementing {@link ISharedObject} with simplified, synchronous summarization and garbage collection.\n * @remarks\n * DDS implementations with async and incremental summarization should extend {@link SharedObjectCore} directly instead.\n * @privateRemarks\n * TODO:\n * This class is badly named.\n * Once it becomes `@internal` \"SharedObjectCore\" should probably become \"SharedObject\"\n * and this class should be renamed to something like \"SharedObjectSynchronous\".\n * @legacy @beta\n */\nexport abstract class SharedObject<\n\tTEvent extends ISharedObjectEvents = ISharedObjectEvents,\n> extends SharedObjectCore<TEvent> {\n\t/**\n\t * True while we are garbage collecting this object's data.\n\t */\n\tprivate _isGCing: boolean = false;\n\n\t/**\n\t * The serializer to use to serialize / parse handles, if any.\n\t */\n\tprivate readonly _serializer: IFluidSerializer;\n\n\tprotected get serializer(): IFluidSerializer {\n\t\t/**\n\t\t * During garbage collection, the GCHandleVisitor \"serializer\" keeps track of IFluidHandles that are serialized. These\n\t\t * handles represent references to other Fluid objects.\n\t\t *\n\t\t * This is fine for now. However, if we implement delay loading in DDSes, they may load and de-serialize content\n\t\t * in summarize. When that happens, they may incorrectly hit this assert and we will have to change this.\n\t\t */\n\t\tassert(\n\t\t\t!this._isGCing,\n\t\t\t0x075 /* \"SummarySerializer should be used for serializing data during summary.\" */,\n\t\t);\n\t\treturn this._serializer;\n\t}\n\n\tconstructor(\n\t\tid: string,\n\t\truntime: IFluidDataStoreRuntime,\n\t\tattributes: IChannelAttributes,\n\t\t/**\n\t\t * The prefix to use for telemetry events emitted by this object.\n\t\t */\n\t\tprivate readonly telemetryContextPrefix: string,\n\t) {\n\t\tsuper(id, runtime, attributes);\n\n\t\tthis._serializer = new FluidSerializer(this.runtime.channelsRoutingContext);\n\t}\n\n\t/**\n\t * {@inheritDoc @fluidframework/datastore-definitions#(IChannel:interface).getAttachSummary}\n\t */\n\tpublic getAttachSummary(\n\t\tfullTree: boolean = false,\n\t\ttrackState: boolean = false,\n\t\ttelemetryContext?: ITelemetryContext,\n\t): ISummaryTreeWithStats {\n\t\tconst result = this.summarizeCore(\n\t\t\tthis.serializer,\n\t\t\ttelemetryContext,\n\t\t\tundefined /* incrementalSummaryContext */,\n\t\t\tfullTree,\n\t\t);\n\t\tthis.incrementTelemetryMetric(\n\t\t\tblobCountPropertyName,\n\t\t\tresult.stats.blobNodeCount,\n\t\t\ttelemetryContext,\n\t\t);\n\t\tthis.incrementTelemetryMetric(\n\t\t\ttotalBlobSizePropertyName,\n\t\t\tresult.stats.totalBlobSize,\n\t\t\ttelemetryContext,\n\t\t);\n\t\treturn result;\n\t}\n\n\t/**\n\t * {@inheritDoc @fluidframework/datastore-definitions#(IChannel:interface).summarize}\n\t */\n\tpublic async summarize(\n\t\tfullTree: boolean = false,\n\t\ttrackState: boolean = false,\n\t\ttelemetryContext?: ITelemetryContext,\n\t\tincrementalSummaryContext?: IExperimentalIncrementalSummaryContext,\n\t): Promise<ISummaryTreeWithStats> {\n\t\tconst result = this.summarizeCore(\n\t\t\tthis.serializer,\n\t\t\ttelemetryContext,\n\t\t\tincrementalSummaryContext,\n\t\t\tfullTree,\n\t\t);\n\t\tthis.incrementTelemetryMetric(\n\t\t\tblobCountPropertyName,\n\t\t\tresult.stats.blobNodeCount,\n\t\t\ttelemetryContext,\n\t\t);\n\t\tthis.incrementTelemetryMetric(\n\t\t\ttotalBlobSizePropertyName,\n\t\t\tresult.stats.totalBlobSize,\n\t\t\ttelemetryContext,\n\t\t);\n\t\treturn result;\n\t}\n\n\t/**\n\t * {@inheritDoc @fluidframework/datastore-definitions#(IChannel:interface).getGCData}\n\t */\n\tpublic getGCData(fullGC: boolean = false): IGarbageCollectionData {\n\t\t// Set _isGCing to true. This flag is used to ensure that we only use GCHandleVisitor in this codepath and not when trying to truly serialize.\n\t\tassert(\n\t\t\t!this._isGCing,\n\t\t\t0x078 /* \"Possible re-entrancy! Summary should not already be in progress.\" */,\n\t\t);\n\t\tthis._isGCing = true;\n\n\t\tlet gcData: IGarbageCollectionData;\n\t\ttry {\n\t\t\tconst handleVisitor = new GCHandleVisitor(this.runtime.channelsRoutingContext);\n\t\t\tthis.processGCDataCore(handleVisitor);\n\t\t\t// The GC data for this shared object contains a single GC node. The outbound routes of this node are the\n\t\t\t// routes of handles serialized during summarization.\n\t\t\tgcData = { gcNodes: { \"/\": handleVisitor.getVisitedHandlePaths() } };\n\t\t\tassert(\n\t\t\t\tthis._isGCing,\n\t\t\t\t0x079 /* \"Possible re-entrancy! Summary should have been in progress.\" */,\n\t\t\t);\n\t\t} finally {\n\t\t\tthis._isGCing = false;\n\t\t}\n\n\t\treturn gcData;\n\t}\n\n\t/**\n\t * Calls the serializer over all data in this object that reference other GC nodes.\n\t * Derived classes must override this to provide custom list of references to other GC nodes.\n\t *\n\t * @remarks Serialization itself doesn't matter (the result is ignored). We're tapping into the serialization infrastructure\n\t * as a way to visit all the content in this content that may reference other objects via handle.\n\t *\n\t * @param serializer - The \"serializer\" (more like handle visitor) to use.\n\t * Implementations should ensure that serialize is called on all handles, as the way to visit them.\n\t */\n\tprotected processGCDataCore(serializer: IFluidSerializer): void {\n\t\t// We run the full summarize logic to get the list of outbound routes from this object. This is a little\n\t\t// expensive but its okay for now. It will be updated to not use full summarize and make it more efficient.\n\t\t// See: https://github.com/microsoft/FluidFramework/issues/4547\n\t\tthis.summarizeCore(serializer);\n\t}\n\n\t/**\n\t * Gets a form of the object that can be serialized.\n\t * @returns A tree representing the snapshot of the shared object.\n\t */\n\tprotected abstract summarizeCore(\n\t\tserializer: IFluidSerializer,\n\t\ttelemetryContext?: ITelemetryContext,\n\t\tincrementalSummaryContext?: IExperimentalIncrementalSummaryContext,\n\t\tfullTree?: boolean,\n\t): ISummaryTreeWithStats;\n\n\tprivate incrementTelemetryMetric(\n\t\tpropertyName: string,\n\t\tincrementBy: number,\n\t\ttelemetryContext?: ITelemetryContext,\n\t): void {\n\t\tif (telemetryContext !== undefined) {\n\t\t\t// TelemetryContext needs to implment a get function\n\t\t\tassert(\n\t\t\t\t\"get\" in telemetryContext && typeof telemetryContext.get === \"function\",\n\t\t\t\t0x97e /* received context must have a get function */,\n\t\t\t);\n\n\t\t\tconst prevTotal = ((telemetryContext as TelemetryContext).get(\n\t\t\t\tthis.telemetryContextPrefix,\n\t\t\t\tpropertyName,\n\t\t\t) ?? 0) as number;\n\t\t\ttelemetryContext.set(this.telemetryContextPrefix, propertyName, prevTotal + incrementBy);\n\t\t}\n\t}\n}\n\n/**\n * Defines a kind of shared object.\n * Used in containers to register a shared object implementation, and to create new instances of a given type of shared object.\n *\n * @remarks\n * For use internally and in the \"encapsulated API\".\n * See {@link SharedObjectKind} for the type erased version for use in the public declarative API.\n *\n * @privateRemarks\n * This does not extend {@link SharedObjectKind} since doing so would prevent implementing this interface in type safe code.\n * Any implementation of this can safely be used as a {@link SharedObjectKind} with an explicit type conversion,\n * but doing so is typically not needed as {@link createSharedObjectKind} is used to produce values that are both types simultaneously.\n * @legacy @beta\n */\nexport interface ISharedObjectKind<TSharedObject> {\n\t/**\n\t * Get a factory which can be used by the Fluid Framework to programmatically instantiate shared objects within containers.\n\t * @remarks\n\t * The produced factory is intended for use with the FluidDataStoreRegistry and is used by the Fluid Framework to instantiate already existing Channels.\n\t * To create new shared objects use:\n\t *\n\t * - {@link @fluidframework/fluid-static#IFluidContainer.create} if using `@fluidframework/fluid-static`, for example via `@fluidframework/azure-client`.\n\t *\n\t * - {@link ISharedObjectKind.create} if using a custom container definitions (and thus not using {@link @fluidframework/fluid-static#IFluidContainer}).\n\t */\n\tgetFactory(): IChannelFactory<TSharedObject>;\n\n\t/**\n\t * Create a shared object.\n\t * @param runtime - The data store runtime that the new shared object belongs to.\n\t * @param id - Optional name of the shared object.\n\t * @returns Newly created shared object.\n\t *\n\t * @example\n\t * To create a `SharedTree`, call the static create method:\n\t *\n\t * ```typescript\n\t * const myTree = SharedTree.create(this.runtime, id);\n\t * ```\n\t * @remarks\n\t * The created object is local (detached): insert a handle to it into an attached object to share (attach) it.\n\t * If using `@fluidframework/fluid-static` (for example via `@fluidframework/azure-client`), use {@link @fluidframework/fluid-static#IFluidContainer.create} instead of calling this directly.\n\t *\n\t * @privateRemarks\n\t * This can only be used with a `MockFluidDataStoreRuntime` when that mock is created with a `registry` containing a factory for this shared object.\n\t */\n\tcreate(runtime: IFluidDataStoreRuntime, id?: string): TSharedObject;\n}\n\n/**\n * Defines a kind of shared object.\n * @remarks\n * Used in containers to register a shared object implementation, and to create new instances of a given type of shared object.\n * See {@link @fluidframework/fluid-static#IFluidContainer.create} and {@link @fluidframework/fluid-static#ContainerSchema} for details.\n * @privateRemarks\n * Part of the \"declarative API\".\n * Type erased reference to an {@link ISharedObjectKind} or a DataObject class in for use in\n * `fluid-static`'s `IFluidContainer` and `ContainerSchema`.\n * Use {@link createSharedObjectKind} to creating an instance of this type.\n * @sealed\n * @public\n */\nexport interface SharedObjectKind<out TSharedObject = unknown>\n\textends ErasedType<readonly [\"SharedObjectKind\", TSharedObject]> {\n\t/**\n\t * Check whether an {@link @fluidframework/core-interfaces#IFluidLoadable} is an instance of this shared object kind.\n\t * @remarks This should be used in place of `instanceof` checks for shared objects, as their actual classes are not exported in Fluid's public API.\n\t */\n\tis(value: IFluidLoadable): value is IFluidLoadable & TSharedObject;\n}\n\n/**\n * Utility for creating ISharedObjectKind instances.\n * @remarks\n * This takes in a class which implements IChannelFactory,\n * and uses it to return a a single value which is intended to be used as the API entry point for the corresponding shared object type.\n * The returned value implements {@link ISharedObjectKind} for use in the encapsulated API, as well as the type erased {@link SharedObjectKind} used by the declarative API.\n * See {@link @fluidframework/fluid-static#ContainerSchema} for how this is used in the declarative API.\n * @internal\n */\nexport function createSharedObjectKind<TSharedObject>(\n\tfactory: (new () => IChannelFactory<TSharedObject>) & { readonly Type: string },\n): ISharedObjectKind<TSharedObject> & SharedObjectKind<TSharedObject> {\n\tconst result: ISharedObjectKind<TSharedObject> &\n\t\tOmit<SharedObjectKind<TSharedObject>, \"brand\"> = {\n\t\tgetFactory(): IChannelFactory<TSharedObject> {\n\t\t\treturn new factory();\n\t\t},\n\n\t\tcreate(runtime: IFluidDataStoreRuntime, id?: string): TSharedObject {\n\t\t\treturn runtime.createChannel(id, factory.Type) as TSharedObject;\n\t\t},\n\n\t\tis(value: IFluidLoadable): value is IFluidLoadable & TSharedObject {\n\t\t\treturn isChannel(value) && value.attributes.type === factory.Type;\n\t\t},\n\t};\n\n\treturn result as typeof result & SharedObjectKind<TSharedObject>;\n}\n\nfunction isChannel(loadable: IFluidLoadable): loadable is IChannel {\n\t// This assumes no other IFluidLoadable has an `attributes` field, and thus may not be fully robust.\n\treturn (loadable as IChannel).attributes !== undefined;\n}\n"]}
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* Copyright (c) Microsoft Corporation and contributors. All rights reserved.\n * Licensed under the MIT License.\n */\n\nimport type { EventEmitterEventType } from \"@fluid-internal/client-utils\";\nimport { AttachState } from \"@fluidframework/container-definitions\";\nimport type { IDeltaManager } from \"@fluidframework/container-definitions/internal\";\nimport type { ITelemetryBaseProperties, ErasedType } from \"@fluidframework/core-interfaces\";\nimport type {\n\tIFluidHandleInternal,\n\tIFluidLoadable,\n} from \"@fluidframework/core-interfaces/internal\";\nimport { assert } from \"@fluidframework/core-utils/internal\";\nimport type {\n\tIChannelServices,\n\tIChannelStorageService,\n\tIChannel,\n\tIChannelAttributes,\n\tIChannelFactory,\n\tIFluidDataStoreRuntime,\n\tIDeltaHandler,\n\tIFluidDataStoreRuntimeInternalConfig,\n} from \"@fluidframework/datastore-definitions/internal\";\nimport type {\n\tIDocumentMessage,\n\tISequencedDocumentMessage,\n} from \"@fluidframework/driver-definitions/internal\";\nimport {\n\ttype IExperimentalIncrementalSummaryContext,\n\ttype ISummaryTreeWithStats,\n\ttype ITelemetryContext,\n\ttype IGarbageCollectionData,\n\tblobCountPropertyName,\n\ttotalBlobSizePropertyName,\n\ttype IRuntimeMessageCollection,\n\ttype IRuntimeMessagesContent,\n} from \"@fluidframework/runtime-definitions/internal\";\nimport {\n\ttoDeltaManagerInternal,\n\ttype TelemetryContext,\n} from \"@fluidframework/runtime-utils/internal\";\nimport {\n\ttype ITelemetryLoggerExt,\n\tDataProcessingError,\n\tEventEmitterWithErrorHandling,\n\ttype MonitoringContext,\n\tSampledTelemetryHelper,\n\tcreateChildLogger,\n\tloggerToMonitoringContext,\n\ttagCodeArtifacts,\n\ttype ICustomData,\n\ttype IFluidErrorBase,\n\tLoggingError,\n} from \"@fluidframework/telemetry-utils/internal\";\nimport { v4 as uuid } from \"uuid\";\n\nimport { GCHandleVisitor } from \"./gcHandleVisitor.js\";\nimport { SharedObjectHandle } from \"./handle.js\";\nimport { FluidSerializer, type IFluidSerializer } from \"./serializer.js\";\nimport type { ISharedObject, ISharedObjectEvents } from \"./types.js\";\nimport { bindHandles, makeHandlesSerializable, parseHandles } from \"./utils.js\";\n\n/**\n * Custom telemetry properties used in {@link SharedObjectCore} to instantiate {@link TelemetryEventBatcher} class.\n * This interface is used to define the properties that will be passed to the {@link TelemetryEventBatcher.measure} function\n * which is called in the {@link SharedObjectCore.process} method.\n */\ninterface ProcessTelemetryProperties {\n\tsequenceDifference: number;\n}\n\n/**\n * Base class from which all {@link ISharedObject|shared objects} derive.\n * @remarks\n * This class implements common behaviors that implementations of {@link ISharedObject} may want to reuse.\n * Even more such behaviors are implemented in the {@link SharedObject} class.\n * @privateRemarks\n * Currently some documentation (like the above) implies that this is supposed to be the only implementation of ISharedObject, which is both package-exported and not `@sealed`.\n * This situation should be clarified to indicate if other implementations of ISharedObject are allowed and just currently don't exist,\n * or if the intention is that no other implementations should exist and creating some might break things.\n * As part of this, any existing implementations of ISharedObject (via SharedObjectCore or otherwise) in use by legacy API users will need to be considered.\n *\n * TODO:\n * This class should eventually be made internal, as custom subclasses of it outside this repository are intended to be made unsupported in the future.\n * @legacy @beta\n */\nexport abstract class SharedObjectCore<\n\t\tTEvent extends ISharedObjectEvents = ISharedObjectEvents,\n\t>\n\textends EventEmitterWithErrorHandling<TEvent>\n\timplements ISharedObject<TEvent>\n{\n\tpublic get IFluidLoadable(): this {\n\t\treturn this;\n\t}\n\n\tprivate readonly opProcessingHelper: SampledTelemetryHelper<\n\t\tvoid,\n\t\tProcessTelemetryProperties\n\t>;\n\tprivate readonly callbacksHelper: SampledTelemetryHelper<boolean>;\n\n\t/**\n\t * The handle referring to this SharedObject\n\t */\n\tpublic readonly handle: IFluidHandleInternal;\n\n\t/**\n\t * Telemetry logger for the shared object\n\t */\n\tprotected readonly logger: ITelemetryLoggerExt;\n\tprivate readonly mc: MonitoringContext;\n\n\t/**\n\t * Connection state\n\t */\n\tprivate _connected = false;\n\n\t/**\n\t * Services used by the shared object\n\t */\n\tprivate services: IChannelServices | undefined;\n\n\t/**\n\t * True if the dds is bound to its parent.\n\t */\n\tprivate _isBoundToContext: boolean = false;\n\n\t/**\n\t * Tracks error that closed this object.\n\t */\n\tprivate closeError?: ReturnType<typeof DataProcessingError.wrapIfUnrecognized>;\n\n\t/**\n\t * Gets the connection state\n\t * @returns The state of the connection\n\t */\n\tpublic get connected(): boolean {\n\t\treturn this._connected;\n\t}\n\n\tconstructor(\n\t\t/**\n\t\t * The ID of the shared object.\n\t\t */\n\t\tpublic id: string,\n\t\t/**\n\t\t * The runtime instance that contains the Shared Object.\n\t\t */\n\t\tprotected runtime: IFluidDataStoreRuntime,\n\t\t/**\n\t\t * The attributes of the Shared Object.\n\t\t */\n\t\tpublic readonly attributes: IChannelAttributes,\n\t) {\n\t\tsuper((event: EventEmitterEventType, e: unknown) =>\n\t\t\tthis.eventListenerErrorHandler(event, e),\n\t\t);\n\n\t\tassert(!id.includes(\"/\"), 0x304 /* Id cannot contain slashes */);\n\n\t\tthis.handle = new SharedObjectHandle(this, id, runtime);\n\n\t\tthis.logger = createChildLogger({\n\t\t\tlogger: runtime.logger,\n\t\t\tproperties: {\n\t\t\t\tall: {\n\t\t\t\t\tsharedObjectId: uuid(),\n\t\t\t\t\t...tagCodeArtifacts({\n\t\t\t\t\t\tddsType: this.attributes.type,\n\t\t\t\t\t}),\n\t\t\t\t},\n\t\t\t},\n\t\t});\n\t\tthis.mc = loggerToMonitoringContext(this.logger);\n\n\t\tconst { opProcessingHelper, callbacksHelper } = this.setUpSampledTelemetryHelpers();\n\t\tthis.opProcessingHelper = opProcessingHelper;\n\t\tthis.callbacksHelper = callbacksHelper;\n\t}\n\n\t/**\n\t * Accessor for `this.runtime`'s {@link @fluidframework/datastore-definitions#IFluidDataStoreRuntime.deltaManager} as a {@link @fluidframework/container-definitions/internal#IDeltaManager}\n\t */\n\tprotected get deltaManager(): IDeltaManager<ISequencedDocumentMessage, IDocumentMessage> {\n\t\treturn toDeltaManagerInternal(this.runtime.deltaManager);\n\t}\n\n\t/**\n\t * This function is only supposed to be called from SharedObjectCore's constructor and\n\t * depends on a few things being set already. assert() calls make sure of it.\n\t * @returns The telemetry sampling helpers, so the constructor can be the one to assign them\n\t * to variables to avoid complaints from TypeScript.\n\t */\n\tprivate setUpSampledTelemetryHelpers(): {\n\t\topProcessingHelper: SampledTelemetryHelper<void, ProcessTelemetryProperties>;\n\t\tcallbacksHelper: SampledTelemetryHelper<boolean>;\n\t} {\n\t\tassert(\n\t\t\tthis.mc !== undefined && this.logger !== undefined,\n\t\t\t0x349 /* this.mc and/or this.logger has not been set */,\n\t\t);\n\t\tconst opProcessingHelper = new SampledTelemetryHelper<void, ProcessTelemetryProperties>(\n\t\t\t{\n\t\t\t\teventName: \"ddsOpProcessing\",\n\t\t\t\tcategory: \"performance\",\n\t\t\t},\n\t\t\tthis.logger,\n\t\t\tthis.mc.config.getNumber(\"Fluid.SharedObject.OpProcessingTelemetrySampling\") ?? 1000,\n\t\t\ttrue,\n\t\t\tnew Map<string, ITelemetryBaseProperties>([\n\t\t\t\t[\"local\", { localOp: true }],\n\t\t\t\t[\"remote\", { localOp: false }],\n\t\t\t]),\n\t\t);\n\t\tconst callbacksHelper = new SampledTelemetryHelper<boolean>(\n\t\t\t{\n\t\t\t\teventName: \"ddsEventCallbacks\",\n\t\t\t\tcategory: \"performance\",\n\t\t\t},\n\t\t\tthis.logger,\n\t\t\tthis.mc.config.getNumber(\"Fluid.SharedObject.DdsCallbacksTelemetrySampling\") ?? 1000,\n\t\t\ttrue,\n\t\t);\n\n\t\tthis.runtime.once(\"dispose\", () => {\n\t\t\tthis.callbacksHelper.dispose();\n\t\t\tthis.opProcessingHelper.dispose();\n\t\t});\n\n\t\treturn { opProcessingHelper, callbacksHelper };\n\t}\n\n\t/**\n\t * Marks this objects as closed. Any attempt to change it (local changes or processing remote ops)\n\t * would result in same error thrown. If called multiple times, only first error is remembered.\n\t * @param error - error object that is thrown whenever an attempt is made to modify this object\n\t */\n\tprivate closeWithError(error: IFluidErrorBase | undefined): void {\n\t\t// eslint-disable-next-line @typescript-eslint/prefer-nullish-coalescing -- using ??= could change behavior if value is falsy\n\t\tif (this.closeError === undefined) {\n\t\t\tthis.closeError = error;\n\t\t}\n\t}\n\n\t/**\n\t * Verifies that this object is not closed via closeWithError(). If it is, throws an error used to close it.\n\t */\n\tprivate verifyNotClosed(): void {\n\t\tif (this.closeError !== undefined) {\n\t\t\tthrow this.closeError;\n\t\t}\n\t}\n\n\t/**\n\t * Event listener handler helper that can be used to react to exceptions thrown from event listeners\n\t * It wraps error with DataProcessingError, closes this object and throws resulting error.\n\t * See closeWithError() for more details\n\t * Ideally such situation never happens, as consumers of DDS should never throw exceptions\n\t * in event listeners (i.e. catch any of the issues and make determination on how to handle it).\n\t * When such exceptions propagate through, most likely data model is no longer consistent, i.e.\n\t * DDS state does not match what user sees. Because of it DDS moves to \"corrupted state\" and does not\n\t * allow processing of ops or local changes, which very quickly results in container closure.\n\t */\n\tprivate eventListenerErrorHandler(event: EventEmitterEventType, e: unknown): void {\n\t\tconst error = DataProcessingError.wrapIfUnrecognized(\n\t\t\te,\n\t\t\t\"SharedObjectEventListenerException\",\n\t\t);\n\t\terror.addTelemetryProperties({ emittedEventName: String(event) });\n\n\t\tthis.closeWithError(error);\n\t\tthrow error;\n\t}\n\n\tprivate setBoundAndHandleAttach(): void {\n\t\t// Ensure didAttach is only called once, and we only register a single event\n\t\t// but we still call setConnectionState as our existing mocks don't\n\t\t// always propagate connection state\n\t\tthis.setBoundAndHandleAttach = () => this.setConnectionState(this.runtime.connected);\n\t\tthis._isBoundToContext = true;\n\t\t// eslint-disable-next-line unicorn/consistent-function-scoping\n\t\tconst runDidAttach: () => void = () => {\n\t\t\t// Allows objects to do any custom processing if it is attached.\n\t\t\tthis.didAttach();\n\t\t\tthis.setConnectionState(this.runtime.connected);\n\t\t};\n\t\tif (this.isAttached()) {\n\t\t\trunDidAttach();\n\t\t} else {\n\t\t\tthis.runtime.once(\"attaching\", runDidAttach);\n\t\t}\n\t}\n\n\t/**\n\t * A shared object, after construction, can either be loaded in the case that it is already part of\n\t * a shared document. Or later attached if it is being newly added.\n\t * @param services - Services used by the shared object\n\t */\n\tpublic async load(services: IChannelServices): Promise<void> {\n\t\tthis.services = services;\n\t\t// set this before load so that isAttached is true\n\t\t// for attached runtimes when load core is running\n\t\tthis._isBoundToContext = true;\n\t\tawait this.loadCore(services.objectStorage);\n\t\tthis.attachDeltaHandler();\n\t\tthis.setBoundAndHandleAttach();\n\t}\n\n\t/**\n\t * Initializes the object as a local, non-shared object. This object can become shared after\n\t * it is attached to the document.\n\t */\n\tpublic initializeLocal(): void {\n\t\tthis.initializeLocalCore();\n\t}\n\n\t/**\n\t * {@inheritDoc (ISharedObject:interface).bindToContext}\n\t */\n\tpublic bindToContext(): void {\n\t\t// ensure the method only runs once by removing the implementation\n\t\t// without this the method suffers from re-entrancy issues\n\t\tthis.bindToContext = () => {};\n\t\tif (!this._isBoundToContext) {\n\t\t\tthis.runtime.bindChannel(this);\n\t\t\t// must set after bind channel so isAttached doesn't report true\n\t\t\t// before binding is complete\n\t\t\tthis.setBoundAndHandleAttach();\n\t\t}\n\t}\n\n\t/**\n\t * {@inheritDoc @fluidframework/datastore-definitions#(IChannel:interface).connect}\n\t */\n\tpublic connect(services: IChannelServices): void {\n\t\t// handle the case where load is called\n\t\t// before connect; loading detached data stores\n\t\tif (this.services === undefined) {\n\t\t\tthis.services = services;\n\t\t\tthis.attachDeltaHandler();\n\t\t}\n\n\t\tthis.setBoundAndHandleAttach();\n\t}\n\n\t/**\n\t * {@inheritDoc @fluidframework/datastore-definitions#(IChannel:interface).isAttached}\n\t */\n\tpublic isAttached(): boolean {\n\t\treturn this._isBoundToContext && this.runtime.attachState !== AttachState.Detached;\n\t}\n\n\t/**\n\t * {@inheritDoc @fluidframework/datastore-definitions#(IChannel:interface).getAttachSummary}\n\t */\n\tpublic abstract getAttachSummary(\n\t\tfullTree?: boolean,\n\t\ttrackState?: boolean,\n\t\ttelemetryContext?: ITelemetryContext,\n\t): ISummaryTreeWithStats;\n\n\t/**\n\t * {@inheritDoc @fluidframework/datastore-definitions#(IChannel:interface).summarize}\n\t */\n\tpublic abstract summarize(\n\t\tfullTree?: boolean,\n\t\ttrackState?: boolean,\n\t\ttelemetryContext?: ITelemetryContext,\n\t): Promise<ISummaryTreeWithStats>;\n\n\t/**\n\t * {@inheritDoc @fluidframework/datastore-definitions#(IChannel:interface).getGCData}\n\t */\n\tpublic abstract getGCData(fullGC?: boolean): IGarbageCollectionData;\n\n\t/**\n\t * Allows the distributed data type to perform custom loading\n\t * @param services - Storage used by the shared object\n\t */\n\tprotected abstract loadCore(services: IChannelStorageService): Promise<void>;\n\n\t/**\n\t * Allows the distributed data type to perform custom local loading.\n\t */\n\tprotected initializeLocalCore(): void {\n\t\treturn;\n\t}\n\n\t/**\n\t * Allows the distributive data type the ability to perform custom processing once an attach has happened.\n\t * Also called after non-local data type get loaded.\n\t */\n\tprotected didAttach(): void {\n\t\treturn;\n\t}\n\n\t/**\n\t * Apply a 'bunch' of sequenced ops to this shared object.\n\t * @remarks\n\t * See {@link @fluidframework/runtime-definitions#IRuntimeMessageCollection} for what a \"bunch\" is.\n\t *\n\t * These ops have been sequenced by the service and now have a finalized ordering.\n\t * They may be local or remote ops, but they cannot be ops that are still pending acknowledgement from the service.\n\t *\n\t * @param messageCollection - The 'bunch' of sequenced ops to apply to this shared object.\n\t * @privateRemarks\n\t * TODO:Performance: AB#59783: Allowing this to process more messages at once (more than the current definition of 'bunch') could improve performance of clients which fall behind,\n\t * which is one of the most important performance sensitive scenarios.\n\t */\n\tprotected abstract processMessagesCore(messagesCollection: IRuntimeMessageCollection): void;\n\n\t/**\n\t * Called when the object has disconnected from the delta stream.\n\t */\n\tprotected abstract onDisconnect(): void;\n\n\t/**\n\t * The serializer to serialize / parse handles.\n\t */\n\tprotected abstract get serializer(): IFluidSerializer;\n\n\t/**\n\t * Submits a message by the local client to the runtime.\n\t * @param content - Content of the message. Note: handles contained in the\n\t * message object should not be encoded in any way\n\t * @param localOpMetadata - The local metadata associated with the message. This is kept locally by the runtime\n\t * and not sent to the server. This will be sent back when this message is received back from the server. This is\n\t * also sent if we are asked to resubmit the message.\n\t */\n\tprotected submitLocalMessage(content: unknown, localOpMetadata: unknown = undefined): void {\n\t\tthis.verifyNotClosed();\n\t\tif (this.isAttached()) {\n\t\t\t// NOTE: We may also be encoding in the ContainerRuntime layer.\n\t\t\t// Once the layer-compat window passes we can remove the encoding codepath here altogether\n\t\t\tconst onlyBind =\n\t\t\t\t(this.runtime as IFluidDataStoreRuntimeInternalConfig)\n\t\t\t\t\t.submitMessagesWithoutEncodingHandles === true;\n\t\t\tconst contentToSubmit = onlyBind\n\t\t\t\t? bindHandles(content, this.handle)\n\t\t\t\t: makeHandlesSerializable(content, this.serializer, this.handle);\n\n\t\t\t// eslint-disable-next-line @typescript-eslint/no-non-null-assertion\n\t\t\tthis.services!.deltaConnection.submit(contentToSubmit, localOpMetadata);\n\t\t}\n\t}\n\n\t/**\n\t * Marks this object as dirty so that it is part of the next summary. It is called by a SharedSummaryBlock\n\t * that want to be part of summary but does not generate ops.\n\t */\n\tprotected dirty(): void {\n\t\tif (!this.isAttached()) {\n\t\t\treturn;\n\t\t}\n\n\t\t// eslint-disable-next-line @typescript-eslint/no-non-null-assertion\n\t\tthis.services!.deltaConnection.dirty();\n\t}\n\n\t/**\n\t * Called when the object has fully connected to the delta stream\n\t * Default implementation for DDS, override if different behavior is required.\n\t */\n\tprotected onConnect(): void {}\n\n\t/**\n\t * Called when a message has to be resubmitted. This typically happens after a reconnection for unacked messages.\n\t * The default implementation here is to resubmit the same message. The client can override if different behavior\n\t * is required. It can choose to resubmit the same message, submit different / multiple messages or not submit\n\t * anything at all.\n\t * @param content - The content of the original message.\n\t * @param localOpMetadata - The local metadata associated with the original message.\n\t */\n\tprotected reSubmitCore(content: unknown, localOpMetadata: unknown): void {\n\t\tthis.submitLocalMessage(content, localOpMetadata);\n\t}\n\n\t/**\n\t * Called when a message has to be resubmitted but its content should be \"squashed\" if any subsequent pending changes\n\t * override the content in the fashion described on {@link @fluidframework/datastore-definitions#IDeltaHandler.reSubmit}.\n\t *\n\t * @param content - The content of the original message.\n\t * @param localOpMetadata - The local metadata associated with the original message.\n\t */\n\tprotected reSubmitSquashed(content: unknown, localOpMetadata: unknown): void {\n\t\tconst allowStagingModeWithoutSquashing =\n\t\t\tloggerToMonitoringContext(this.logger).config.getBoolean(\n\t\t\t\t\"Fluid.SharedObject.AllowStagingModeWithoutSquashing\",\n\t\t\t) ??\n\t\t\t(this.runtime.options.allowStagingModeWithoutSquashing as boolean | undefined) ??\n\t\t\ttrue;\n\t\tif (allowStagingModeWithoutSquashing) {\n\t\t\tthis.reSubmitCore(content, localOpMetadata);\n\t\t} else {\n\t\t\tthis.throwUnsupported(\"reSubmitSquashed\");\n\t\t}\n\t}\n\n\t/**\n\t * Promises that are waiting for an ack from the server before resolving should use this instead of new Promise.\n\t * It ensures that if something changes that will interrupt that ack (e.g. the FluidDataStoreRuntime disposes),\n\t * the Promise will reject.\n\t * If runtime is disposed when this call is made, executor is not run and promise is rejected right away.\n\t */\n\tprotected async newAckBasedPromise<T>(\n\t\texecutor: (\n\t\t\tresolve: (value: T | PromiseLike<T>) => void,\n\t\t\treject: (reason?: unknown) => void,\n\t\t) => void,\n\t): Promise<T> {\n\t\tlet rejectBecauseDispose: () => void;\n\t\treturn new Promise<T>((resolve, reject) => {\n\t\t\trejectBecauseDispose = () =>\n\t\t\t\treject(\n\t\t\t\t\tnew Error(\"FluidDataStoreRuntime disposed while this ack-based Promise was pending\"),\n\t\t\t\t);\n\n\t\t\tif (this.runtime.disposed) {\n\t\t\t\trejectBecauseDispose();\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tthis.runtime.on(\"dispose\", rejectBecauseDispose);\n\t\t\texecutor(resolve, reject);\n\t\t}).finally(() => {\n\t\t\t// Note: rejectBecauseDispose will never be undefined here\n\t\t\tthis.runtime.off(\"dispose\", rejectBecauseDispose);\n\t\t});\n\t}\n\n\tprivate attachDeltaHandler(): void {\n\t\t// Services should already be there in case we are attaching delta handler.\n\t\tassert(\n\t\t\tthis.services !== undefined,\n\t\t\t0x07a /* \"Services should be there to attach delta handler\" */,\n\t\t);\n\t\t// attachDeltaHandler is only called after services is assigned\n\t\tthis.services.deltaConnection.attach({\n\t\t\tprocessMessages: (messagesCollection: IRuntimeMessageCollection) => {\n\t\t\t\tthis.processMessages(messagesCollection);\n\t\t\t},\n\t\t\tsetConnectionState: (connected: boolean) => {\n\t\t\t\tthis.setConnectionState(connected);\n\t\t\t},\n\t\t\treSubmit: (content: unknown, localOpMetadata: unknown, squash: boolean) => {\n\t\t\t\tthis.reSubmit(content, localOpMetadata, squash);\n\t\t\t},\n\t\t\tapplyStashedOp: (content: unknown): void => {\n\t\t\t\tthis.applyStashedOp(parseHandles(content, this.serializer));\n\t\t\t},\n\t\t\trollback: (content: unknown, localOpMetadata: unknown) => {\n\t\t\t\tthis.rollback(content, localOpMetadata);\n\t\t\t},\n\t\t} satisfies IDeltaHandler);\n\t}\n\n\t/**\n\t * Set the state of connection to services.\n\t * @param connected - true if connected, false otherwise.\n\t */\n\tprivate setConnectionState(connected: boolean): void {\n\t\t// only an attached shared object can transition its\n\t\t// connected state. This is defensive, as some\n\t\t// of our test harnesses don't handle this correctly\n\t\tif (!this.isAttached() || this._connected === connected) {\n\t\t\t// Not changing state, nothing the same.\n\t\t\treturn;\n\t\t}\n\n\t\t// Should I change the state at the end? So that we *can't* send new stuff before we send old?\n\t\tthis._connected = connected;\n\n\t\tif (connected) {\n\t\t\t// Call this for now so that DDSes like ConsensusOrderedCollection that maintain their own pending\n\t\t\t// messages will work.\n\t\t\tthis.onConnect();\n\t\t} else {\n\t\t\t// Things that are true now...\n\t\t\t// - if we had a connection we can no longer send messages over it\n\t\t\t// - if we had outbound messages some may or may not be ACK'd. Won't know until next message\n\t\t\t//\n\t\t\t// - nack could get a new msn - but might as well do it in the join?\n\t\t\tthis.onDisconnect();\n\t\t}\n\t}\n\n\t/* eslint-disable jsdoc/check-indentation */\n\t/**\n\t * Process a bunch of messages for this shared object. A bunch is group of messages that have the following properties:\n\t * - They are all part of the same grouped batch, which entails:\n\t *   - They are contiguous in sequencing order.\n\t *   - They are all from the same client.\n\t *   - They are all based on the same reference sequence number.\n\t *   - They are not interleaved with messages from other clients.\n\t * - They are not interleaved with messages from other DDS in the container.\n\t * @param messageCollection - The collection of messages to process.\n\t *\n\t */\n\t/* eslint-enable jsdoc/check-indentation */\n\tprivate processMessages(messagesCollection: IRuntimeMessageCollection): void {\n\t\tthis.verifyNotClosed(); // This will result in container closure.\n\n\t\tconst { envelope, local, messagesContent } = messagesCollection;\n\n\t\t// Decode any handles in the contents before processing the messages.\n\t\tconst decodedMessagesContent: IRuntimeMessagesContent[] = [];\n\t\tfor (const { contents, localOpMetadata, clientSequenceNumber } of messagesContent) {\n\t\t\tconst decodedMessageContent: IRuntimeMessagesContent = {\n\t\t\t\tcontents: parseHandles(contents, this.serializer),\n\t\t\t\tlocalOpMetadata,\n\t\t\t\tclientSequenceNumber,\n\t\t\t};\n\t\t\tdecodedMessagesContent.push(decodedMessageContent);\n\t\t}\n\n\t\tconst emitEvents = (event: \"pre-op\" | \"op\"): void => {\n\t\t\tfor (const { contents, clientSequenceNumber } of decodedMessagesContent) {\n\t\t\t\tconst message: ISequencedDocumentMessage = {\n\t\t\t\t\t...envelope,\n\t\t\t\t\tcontents,\n\t\t\t\t\tclientSequenceNumber,\n\t\t\t\t};\n\t\t\t\tthis.emitInternal(event, message, local);\n\t\t\t}\n\t\t};\n\n\t\temitEvents(\"pre-op\");\n\t\tthis.opProcessingHelper.measure(\n\t\t\t(): ICustomData<ProcessTelemetryProperties> => {\n\t\t\t\tconst decodedMessagesCollection: IRuntimeMessageCollection = {\n\t\t\t\t\tenvelope,\n\t\t\t\t\tlocal,\n\t\t\t\t\tmessagesContent: decodedMessagesContent,\n\t\t\t\t};\n\t\t\t\tthis.processMessagesCore(decodedMessagesCollection);\n\t\t\t\tconst telemetryProperties: ProcessTelemetryProperties = {\n\t\t\t\t\tsequenceDifference: envelope.sequenceNumber - envelope.referenceSequenceNumber,\n\t\t\t\t};\n\t\t\t\treturn {\n\t\t\t\t\tcustomData: telemetryProperties,\n\t\t\t\t};\n\t\t\t},\n\t\t\tlocal ? \"local\" : \"remote\",\n\t\t);\n\t\temitEvents(\"op\");\n\t}\n\n\t/**\n\t * Called when a message has to be resubmitted. This typically happens for unacked messages after a\n\t * reconnection.\n\t * @param content - The content of the original message.\n\t * @param localOpMetadata - The local metadata associated with the original message.\n\t * @param squash - If `true`, the message will be resubmitted in a squashed form. If `false`,\n\t * the legacy behavior (no squashing) will be used.\n\t */\n\tprivate reSubmit(content: unknown, localOpMetadata: unknown, squash: boolean): void {\n\t\tif (squash) {\n\t\t\tthis.reSubmitSquashed(content, localOpMetadata);\n\t\t} else {\n\t\t\tthis.reSubmitCore(content, localOpMetadata);\n\t\t}\n\t}\n\n\t/**\n\t * Revert an op\n\t */\n\tprotected rollback(content: unknown, localOpMetadata: unknown): void {\n\t\tthis.throwUnsupported(\"rollback\");\n\t}\n\n\t/**\n\t * Apply changes from the provided op content just as if a local client has made the change,\n\t * including submitting the op. Used when rehydrating an attached container\n\t * with pending changes. The rehydration process replays all remote ops\n\t * and applies stashed ops after the remote op with a sequence number\n\t * that matches that of the stashed op is applied. This ensures\n\t * stashed ops are applied at the same state they were originally created.\n\t *\n\t * It is possible that stashed ops have been sent in the past, and will be found when\n\t * the shared object catches up with remotes ops.\n\t * So this prepares the SharedObject for seeing potentially seeing the ACK.\n\t * If no matching remote op is found, all the applied stashed ops will go\n\t * through the normal resubmit flow upon reconnection, which allows the dds\n\t * to rebase them to the latest state, and then resubmit them.\n\t *\n\t * @param content - Contents of a stashed op.\n\t */\n\tprotected abstract applyStashedOp(content: unknown): void;\n\n\t/**\n\t * Emit an event. This function is only intended for use by DDS classes that extend SharedObject/SharedObjectCore,\n\t * specifically to emit events that are part of the public interface of the DDS (i.e. those that can have listeners\n\t * attached to them by the consumers of the DDS). It should not be called from outside the class or to emit events\n\t * which are only internal to the DDS. Support for calling it from outside the DDS instance might be removed in the\n\t * future.\n\t * @param event - The event to emit.\n\t * @param args - Arguments to pass to the event listeners.\n\t * @returns `true` if the event had listeners, `false` otherwise.\n\t */\n\tpublic emit(event: EventEmitterEventType, ...args: any[]): boolean {\n\t\treturn this.callbacksHelper.measure(() => {\n\t\t\t// eslint-disable-next-line @typescript-eslint/no-unsafe-argument\n\t\t\treturn super.emit(event, ...args);\n\t\t});\n\t}\n\n\t/**\n\t * Use to emit events inside {@link SharedObjectCore}, with no telemetry measurement\n\t * done on the duration of the callbacks. Simply calls `super.emit()`.\n\t * @param event - Event to emit\n\t * @param args - Arguments for the event\n\t * @returns Whatever `super.emit()` returns.\n\t */\n\tprivate emitInternal(event: EventEmitterEventType, ...args: unknown[]): boolean {\n\t\treturn super.emit(event, ...args);\n\t}\n\n\tprivate throwUnsupported(featureName: string): never {\n\t\tthrow new LoggingError(\"Unsupported DDS feature\", {\n\t\t\tfeatureName,\n\t\t\t...tagCodeArtifacts({ ddsType: this.attributes.type }),\n\t\t});\n\t}\n}\n\n/**\n * Helper for implementing {@link ISharedObject} with simplified, synchronous summarization and garbage collection.\n * @remarks\n * DDS implementations with async and incremental summarization should extend {@link SharedObjectCore} directly instead.\n * @privateRemarks\n * TODO:\n * This class is badly named.\n * Once it becomes `@internal` \"SharedObjectCore\" should probably become \"SharedObject\"\n * and this class should be renamed to something like \"SharedObjectSynchronous\".\n * @legacy @beta\n */\nexport abstract class SharedObject<\n\tTEvent extends ISharedObjectEvents = ISharedObjectEvents,\n> extends SharedObjectCore<TEvent> {\n\t/**\n\t * True while we are garbage collecting this object's data.\n\t */\n\tprivate _isGCing: boolean = false;\n\n\t/**\n\t * The serializer to use to serialize / parse handles, if any.\n\t */\n\tprivate readonly _serializer: IFluidSerializer;\n\n\tprotected get serializer(): IFluidSerializer {\n\t\t/**\n\t\t * During garbage collection, the GCHandleVisitor \"serializer\" keeps track of IFluidHandles that are serialized. These\n\t\t * handles represent references to other Fluid objects.\n\t\t *\n\t\t * This is fine for now. However, if we implement delay loading in DDSes, they may load and de-serialize content\n\t\t * in summarize. When that happens, they may incorrectly hit this assert and we will have to change this.\n\t\t */\n\t\tassert(\n\t\t\t!this._isGCing,\n\t\t\t0x075 /* \"SummarySerializer should be used for serializing data during summary.\" */,\n\t\t);\n\t\treturn this._serializer;\n\t}\n\n\tconstructor(\n\t\tid: string,\n\t\truntime: IFluidDataStoreRuntime,\n\t\tattributes: IChannelAttributes,\n\t\t/**\n\t\t * The prefix to use for telemetry events emitted by this object.\n\t\t */\n\t\tprivate readonly telemetryContextPrefix: string,\n\t) {\n\t\tsuper(id, runtime, attributes);\n\n\t\tthis._serializer = new FluidSerializer(this.runtime.channelsRoutingContext);\n\t}\n\n\t/**\n\t * {@inheritDoc @fluidframework/datastore-definitions#(IChannel:interface).getAttachSummary}\n\t */\n\tpublic getAttachSummary(\n\t\tfullTree: boolean = false,\n\t\ttrackState: boolean = false,\n\t\ttelemetryContext?: ITelemetryContext,\n\t): ISummaryTreeWithStats {\n\t\tconst result = this.summarizeCore(\n\t\t\tthis.serializer,\n\t\t\ttelemetryContext,\n\t\t\tundefined /* incrementalSummaryContext */,\n\t\t\tfullTree,\n\t\t);\n\t\tthis.incrementTelemetryMetric(\n\t\t\tblobCountPropertyName,\n\t\t\tresult.stats.blobNodeCount,\n\t\t\ttelemetryContext,\n\t\t);\n\t\tthis.incrementTelemetryMetric(\n\t\t\ttotalBlobSizePropertyName,\n\t\t\tresult.stats.totalBlobSize,\n\t\t\ttelemetryContext,\n\t\t);\n\t\treturn result;\n\t}\n\n\t/**\n\t * {@inheritDoc @fluidframework/datastore-definitions#(IChannel:interface).summarize}\n\t */\n\tpublic async summarize(\n\t\tfullTree: boolean = false,\n\t\ttrackState: boolean = false,\n\t\ttelemetryContext?: ITelemetryContext,\n\t\tincrementalSummaryContext?: IExperimentalIncrementalSummaryContext,\n\t): Promise<ISummaryTreeWithStats> {\n\t\tconst result = this.summarizeCore(\n\t\t\tthis.serializer,\n\t\t\ttelemetryContext,\n\t\t\tincrementalSummaryContext,\n\t\t\tfullTree,\n\t\t);\n\t\tthis.incrementTelemetryMetric(\n\t\t\tblobCountPropertyName,\n\t\t\tresult.stats.blobNodeCount,\n\t\t\ttelemetryContext,\n\t\t);\n\t\tthis.incrementTelemetryMetric(\n\t\t\ttotalBlobSizePropertyName,\n\t\t\tresult.stats.totalBlobSize,\n\t\t\ttelemetryContext,\n\t\t);\n\t\treturn result;\n\t}\n\n\t/**\n\t * {@inheritDoc @fluidframework/datastore-definitions#(IChannel:interface).getGCData}\n\t */\n\tpublic getGCData(fullGC: boolean = false): IGarbageCollectionData {\n\t\t// Set _isGCing to true. This flag is used to ensure that we only use GCHandleVisitor in this codepath and not when trying to truly serialize.\n\t\tassert(\n\t\t\t!this._isGCing,\n\t\t\t0x078 /* \"Possible re-entrancy! Summary should not already be in progress.\" */,\n\t\t);\n\t\tthis._isGCing = true;\n\n\t\tlet gcData: IGarbageCollectionData;\n\t\ttry {\n\t\t\tconst handleVisitor = new GCHandleVisitor(this.runtime.channelsRoutingContext);\n\t\t\tthis.processGCDataCore(handleVisitor);\n\t\t\t// The GC data for this shared object contains a single GC node. The outbound routes of this node are the\n\t\t\t// routes of handles serialized during summarization.\n\t\t\tgcData = { gcNodes: { \"/\": handleVisitor.getVisitedHandlePaths() } };\n\t\t\tassert(\n\t\t\t\tthis._isGCing,\n\t\t\t\t0x079 /* \"Possible re-entrancy! Summary should have been in progress.\" */,\n\t\t\t);\n\t\t} finally {\n\t\t\tthis._isGCing = false;\n\t\t}\n\n\t\treturn gcData;\n\t}\n\n\t/**\n\t * Calls the serializer over all data in this object that reference other GC nodes.\n\t * Derived classes must override this to provide custom list of references to other GC nodes.\n\t *\n\t * @remarks Serialization itself doesn't matter (the result is ignored). We're tapping into the serialization infrastructure\n\t * as a way to visit all the content in this content that may reference other objects via handle.\n\t *\n\t * @param serializer - The \"serializer\" (more like handle visitor) to use.\n\t * Implementations should ensure that serialize is called on all handles, as the way to visit them.\n\t */\n\tprotected processGCDataCore(serializer: IFluidSerializer): void {\n\t\t// We run the full summarize logic to get the list of outbound routes from this object. This is a little\n\t\t// expensive but its okay for now. It will be updated to not use full summarize and make it more efficient.\n\t\t// See: https://github.com/microsoft/FluidFramework/issues/4547\n\t\tthis.summarizeCore(serializer);\n\t}\n\n\t/**\n\t * Gets a form of the object that can be serialized.\n\t * @returns A tree representing the snapshot of the shared object.\n\t */\n\tprotected abstract summarizeCore(\n\t\tserializer: IFluidSerializer,\n\t\ttelemetryContext?: ITelemetryContext,\n\t\tincrementalSummaryContext?: IExperimentalIncrementalSummaryContext,\n\t\tfullTree?: boolean,\n\t): ISummaryTreeWithStats;\n\n\tprivate incrementTelemetryMetric(\n\t\tpropertyName: string,\n\t\tincrementBy: number,\n\t\ttelemetryContext?: ITelemetryContext,\n\t): void {\n\t\tif (telemetryContext !== undefined) {\n\t\t\t// TelemetryContext needs to implment a get function\n\t\t\tassert(\n\t\t\t\t\"get\" in telemetryContext && typeof telemetryContext.get === \"function\",\n\t\t\t\t0x97e /* received context must have a get function */,\n\t\t\t);\n\n\t\t\tconst prevTotal = ((telemetryContext as TelemetryContext).get(\n\t\t\t\tthis.telemetryContextPrefix,\n\t\t\t\tpropertyName,\n\t\t\t) ?? 0) as number;\n\t\t\ttelemetryContext.set(this.telemetryContextPrefix, propertyName, prevTotal + incrementBy);\n\t\t}\n\t}\n}\n\n/**\n * Defines a kind of shared object.\n * Used in containers to register a shared object implementation, and to create new instances of a given type of shared object.\n *\n * @remarks\n * For use internally and in the \"encapsulated API\".\n * See {@link SharedObjectKind} for the type erased version for use in the public declarative API.\n *\n * @privateRemarks\n * This does not extend {@link SharedObjectKind} since doing so would prevent implementing this interface in type safe code.\n * Any implementation of this can safely be used as a {@link SharedObjectKind} with an explicit type conversion,\n * but doing so is typically not needed as {@link createSharedObjectKind} is used to produce values that are both types simultaneously.\n * @legacy @beta\n */\nexport interface ISharedObjectKind<TSharedObject> {\n\t/**\n\t * Get a factory which can be used by the Fluid Framework to programmatically instantiate shared objects within containers.\n\t * @remarks\n\t * The produced factory is intended for use with the FluidDataStoreRegistry and is used by the Fluid Framework to instantiate already existing Channels.\n\t * To create new shared objects use:\n\t *\n\t * - {@link @fluidframework/fluid-static#IFluidContainer.create} if using `@fluidframework/fluid-static`, for example via `@fluidframework/azure-client`.\n\t *\n\t * - {@link ISharedObjectKind.create} if using a custom container definitions (and thus not using {@link @fluidframework/fluid-static#IFluidContainer}).\n\t */\n\tgetFactory(): IChannelFactory<TSharedObject>;\n\n\t/**\n\t * Create a shared object.\n\t * @param runtime - The data store runtime that the new shared object belongs to.\n\t * @param id - Optional name of the shared object.\n\t * @returns Newly created shared object.\n\t *\n\t * @example\n\t * To create a `SharedTree`, call the static create method:\n\t *\n\t * ```typescript\n\t * const myTree = SharedTree.create(this.runtime, id);\n\t * ```\n\t * @remarks\n\t * The created object is local (detached): insert a handle to it into an attached object to share (attach) it.\n\t * If using `@fluidframework/fluid-static` (for example via `@fluidframework/azure-client`), use {@link @fluidframework/fluid-static#IFluidContainer.create} instead of calling this directly.\n\t *\n\t * @privateRemarks\n\t * This can only be used with a `MockFluidDataStoreRuntime` when that mock is created with a `registry` containing a factory for this shared object.\n\t */\n\tcreate(runtime: IFluidDataStoreRuntime, id?: string): TSharedObject;\n}\n\n/**\n * Defines a kind of shared object.\n * @remarks\n * Used in containers to register a shared object implementation, and to create new instances of a given type of shared object.\n * See {@link @fluidframework/fluid-static#IFluidContainer.create} and {@link @fluidframework/fluid-static#ContainerSchema} for details.\n * @privateRemarks\n * Part of the \"declarative API\".\n * Type erased reference to an {@link ISharedObjectKind} or a DataObject class in for use in\n * `fluid-static`'s `IFluidContainer` and `ContainerSchema`.\n * Use {@link createSharedObjectKind} to creating an instance of this type.\n * @sealed\n * @public\n */\nexport interface SharedObjectKind<out TSharedObject = unknown>\n\textends ErasedType<readonly [\"SharedObjectKind\", TSharedObject]> {\n\t/**\n\t * Check whether an {@link @fluidframework/core-interfaces#IFluidLoadable} is an instance of this shared object kind.\n\t * @remarks This should be used in place of `instanceof` checks for shared objects, as their actual classes are not exported in Fluid's public API.\n\t */\n\tis(value: IFluidLoadable): value is IFluidLoadable & TSharedObject;\n}\n\n/**\n * Utility for creating ISharedObjectKind instances.\n * @remarks\n * This takes in a class which implements IChannelFactory,\n * and uses it to return a a single value which is intended to be used as the API entry point for the corresponding shared object type.\n * The returned value implements {@link ISharedObjectKind} for use in the encapsulated API, as well as the type erased {@link SharedObjectKind} used by the declarative API.\n * See {@link @fluidframework/fluid-static#ContainerSchema} for how this is used in the declarative API.\n * @internal\n */\nexport function createSharedObjectKind<TSharedObject>(\n\tfactory: (new () => IChannelFactory<TSharedObject>) & { readonly Type: string },\n): ISharedObjectKind<TSharedObject> & SharedObjectKind<TSharedObject> {\n\tconst result: ISharedObjectKind<TSharedObject> &\n\t\tOmit<SharedObjectKind<TSharedObject>, \"brand\"> = {\n\t\tgetFactory(): IChannelFactory<TSharedObject> {\n\t\t\treturn new factory();\n\t\t},\n\n\t\tcreate(runtime: IFluidDataStoreRuntime, id?: string): TSharedObject {\n\t\t\treturn runtime.createChannel(id, factory.Type) as TSharedObject;\n\t\t},\n\n\t\tis(value: IFluidLoadable): value is IFluidLoadable & TSharedObject {\n\t\t\treturn isChannel(value) && value.attributes.type === factory.Type;\n\t\t},\n\t};\n\n\treturn result as typeof result & SharedObjectKind<TSharedObject>;\n}\n\nfunction isChannel(loadable: IFluidLoadable): loadable is IChannel {\n\t// This assumes no other IFluidLoadable has an `attributes` field, and thus may not be fully robust.\n\treturn (loadable as IChannel).attributes !== undefined;\n}\n"]}

lib/packageVersion.d.ts

@@ -8,3 +8,3 @@ /*!
 export declare const pkgName = "@fluidframework/shared-object-base";
-export declare const pkgVersion = "2.90.0";
+export declare const pkgVersion = "2.91.0";
 //# sourceMappingURL=packageVersion.d.ts.map

lib/packageVersion.js

@@ -8,3 +8,3 @@ /*!
 export const pkgName = "@fluidframework/shared-object-base";
-export const pkgVersion = "2.90.0";
+export const pkgVersion = "2.91.0";
 //# sourceMappingURL=packageVersion.js.map

lib/packageVersion.js.map

@@ -1,1 +0,1 @@
-{"version":3,"file":"packageVersion.js","sourceRoot":"","sources":["../src/packageVersion.ts"],"names":[],"mappings":"AAAA;;;;;GAKG;AAEH,MAAM,CAAC,MAAM,OAAO,GAAG,oCAAoC,CAAC;AAC5D,MAAM,CAAC,MAAM,UAAU,GAAG,QAAQ,CAAC","sourcesContent":["/*!\n * Copyright (c) Microsoft Corporation and contributors. All rights reserved.\n * Licensed under the MIT License.\n *\n * THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY\n */\n\nexport const pkgName = \"@fluidframework/shared-object-base\";\nexport const pkgVersion = \"2.90.0\";\n"]}
+{"version":3,"file":"packageVersion.js","sourceRoot":"","sources":["../src/packageVersion.ts"],"names":[],"mappings":"AAAA;;;;;GAKG;AAEH,MAAM,CAAC,MAAM,OAAO,GAAG,oCAAoC,CAAC;AAC5D,MAAM,CAAC,MAAM,UAAU,GAAG,QAAQ,CAAC","sourcesContent":["/*!\n * Copyright (c) Microsoft Corporation and contributors. All rights reserved.\n * Licensed under the MIT License.\n *\n * THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY\n */\n\nexport const pkgName = \"@fluidframework/shared-object-base\";\nexport const pkgVersion = \"2.91.0\";\n"]}

lib/sharedObject.d.ts

@@ -172,14 +172,13 @@ /*!
     /**
-     * Derived classes must override this to do custom processing on a 'bunch' of remote messages.
+     * Apply a 'bunch' of sequenced ops to this shared object.
      * @remarks
-     * A 'bunch' is a group of messages that have the following properties:
-     * - They are all part of the same grouped batch, which entails:
-     *   - They are contiguous in sequencing order.
-     *   - They are all from the same client.
-     *   - They are all based on the same reference sequence number.
-     *   - They are not interleaved with messages from other clients.
-     * - They are not interleaved with messages from other DDS in the container.
-     * Derived classes should override this if they need to do custom processing on a 'bunch' of remote messages.
-     * @param messageCollection - The collection of messages to process.
+     * See {@link @fluidframework/runtime-definitions#IRuntimeMessageCollection} for what a "bunch" is.
      *
+     * These ops have been sequenced by the service and now have a finalized ordering.
+     * They may be local or remote ops, but they cannot be ops that are still pending acknowledgement from the service.
+     *
+     * @param messageCollection - The 'bunch' of sequenced ops to apply to this shared object.
+     * @privateRemarks
+     * TODO:Performance: AB#59783: Allowing this to process more messages at once (more than the current definition of 'bunch') could improve performance of clients which fall behind,
+     * which is one of the most important performance sensitive scenarios.
      */
@@ -186,0 +185,0 @@ protected abstract processMessagesCore(messagesCollection: IRuntimeMessageCollection): void;

lib/sharedObject.d.ts.map

@@ -1,1 +0,1 @@
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lib/sharedObject.js.map

@@ -1,1 +0,1 @@
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* Copyright (c) Microsoft Corporation and contributors. All rights reserved.\n * Licensed under the MIT License.\n */\n\nimport type { EventEmitterEventType } from \"@fluid-internal/client-utils\";\nimport { AttachState } from \"@fluidframework/container-definitions\";\nimport type { IDeltaManager } from \"@fluidframework/container-definitions/internal\";\nimport type { ITelemetryBaseProperties, ErasedType } from \"@fluidframework/core-interfaces\";\nimport type {\n\tIFluidHandleInternal,\n\tIFluidLoadable,\n} from \"@fluidframework/core-interfaces/internal\";\nimport { assert } from \"@fluidframework/core-utils/internal\";\nimport type {\n\tIChannelServices,\n\tIChannelStorageService,\n\tIChannel,\n\tIChannelAttributes,\n\tIChannelFactory,\n\tIFluidDataStoreRuntime,\n\tIDeltaHandler,\n\tIFluidDataStoreRuntimeInternalConfig,\n} from \"@fluidframework/datastore-definitions/internal\";\nimport type {\n\tIDocumentMessage,\n\tISequencedDocumentMessage,\n} from \"@fluidframework/driver-definitions/internal\";\nimport {\n\ttype IExperimentalIncrementalSummaryContext,\n\ttype ISummaryTreeWithStats,\n\ttype ITelemetryContext,\n\ttype IGarbageCollectionData,\n\tblobCountPropertyName,\n\ttotalBlobSizePropertyName,\n\ttype IRuntimeMessageCollection,\n\ttype IRuntimeMessagesContent,\n} from \"@fluidframework/runtime-definitions/internal\";\nimport {\n\ttoDeltaManagerInternal,\n\ttype TelemetryContext,\n} from \"@fluidframework/runtime-utils/internal\";\nimport {\n\ttype ITelemetryLoggerExt,\n\tDataProcessingError,\n\tEventEmitterWithErrorHandling,\n\ttype MonitoringContext,\n\tSampledTelemetryHelper,\n\tcreateChildLogger,\n\tloggerToMonitoringContext,\n\ttagCodeArtifacts,\n\ttype ICustomData,\n\ttype IFluidErrorBase,\n\tLoggingError,\n} from \"@fluidframework/telemetry-utils/internal\";\nimport { v4 as uuid } from \"uuid\";\n\nimport { GCHandleVisitor } from \"./gcHandleVisitor.js\";\nimport { SharedObjectHandle } from \"./handle.js\";\nimport { FluidSerializer, type IFluidSerializer } from \"./serializer.js\";\nimport type { ISharedObject, ISharedObjectEvents } from \"./types.js\";\nimport { bindHandles, makeHandlesSerializable, parseHandles } from \"./utils.js\";\n\n/**\n * Custom telemetry properties used in {@link SharedObjectCore} to instantiate {@link TelemetryEventBatcher} class.\n * This interface is used to define the properties that will be passed to the {@link TelemetryEventBatcher.measure} function\n * which is called in the {@link SharedObjectCore.process} method.\n */\ninterface ProcessTelemetryProperties {\n\tsequenceDifference: number;\n}\n\n/**\n * Base class from which all {@link ISharedObject|shared objects} derive.\n * @remarks\n * This class implements common behaviors that implementations of {@link ISharedObject} may want to reuse.\n * Even more such behaviors are implemented in the {@link SharedObject} class.\n * @privateRemarks\n * Currently some documentation (like the above) implies that this is supposed to be the only implementation of ISharedObject, which is both package-exported and not `@sealed`.\n * This situation should be clarified to indicate if other implementations of ISharedObject are allowed and just currently don't exist,\n * or if the intention is that no other implementations should exist and creating some might break things.\n * As part of this, any existing implementations of ISharedObject (via SharedObjectCore or otherwise) in use by legacy API users will need to be considered.\n *\n * TODO:\n * This class should eventually be made internal, as custom subclasses of it outside this repository are intended to be made unsupported in the future.\n * @legacy @beta\n */\nexport abstract class SharedObjectCore<\n\t\tTEvent extends ISharedObjectEvents = ISharedObjectEvents,\n\t>\n\textends EventEmitterWithErrorHandling<TEvent>\n\timplements ISharedObject<TEvent>\n{\n\tpublic get IFluidLoadable(): this {\n\t\treturn this;\n\t}\n\n\tprivate readonly opProcessingHelper: SampledTelemetryHelper<\n\t\tvoid,\n\t\tProcessTelemetryProperties\n\t>;\n\tprivate readonly callbacksHelper: SampledTelemetryHelper<boolean>;\n\n\t/**\n\t * The handle referring to this SharedObject\n\t */\n\tpublic readonly handle: IFluidHandleInternal;\n\n\t/**\n\t * Telemetry logger for the shared object\n\t */\n\tprotected readonly logger: ITelemetryLoggerExt;\n\tprivate readonly mc: MonitoringContext;\n\n\t/**\n\t * Connection state\n\t */\n\tprivate _connected = false;\n\n\t/**\n\t * Services used by the shared object\n\t */\n\tprivate services: IChannelServices | undefined;\n\n\t/**\n\t * True if the dds is bound to its parent.\n\t */\n\tprivate _isBoundToContext: boolean = false;\n\n\t/**\n\t * Tracks error that closed this object.\n\t */\n\tprivate closeError?: ReturnType<typeof DataProcessingError.wrapIfUnrecognized>;\n\n\t/**\n\t * Gets the connection state\n\t * @returns The state of the connection\n\t */\n\tpublic get connected(): boolean {\n\t\treturn this._connected;\n\t}\n\n\tconstructor(\n\t\t/**\n\t\t * The ID of the shared object.\n\t\t */\n\t\tpublic id: string,\n\t\t/**\n\t\t * The runtime instance that contains the Shared Object.\n\t\t */\n\t\tprotected runtime: IFluidDataStoreRuntime,\n\t\t/**\n\t\t * The attributes of the Shared Object.\n\t\t */\n\t\tpublic readonly attributes: IChannelAttributes,\n\t) {\n\t\tsuper((event: EventEmitterEventType, e: unknown) =>\n\t\t\tthis.eventListenerErrorHandler(event, e),\n\t\t);\n\n\t\tassert(!id.includes(\"/\"), 0x304 /* Id cannot contain slashes */);\n\n\t\tthis.handle = new SharedObjectHandle(this, id, runtime);\n\n\t\tthis.logger = createChildLogger({\n\t\t\tlogger: runtime.logger,\n\t\t\tproperties: {\n\t\t\t\tall: {\n\t\t\t\t\tsharedObjectId: uuid(),\n\t\t\t\t\t...tagCodeArtifacts({\n\t\t\t\t\t\tddsType: this.attributes.type,\n\t\t\t\t\t}),\n\t\t\t\t},\n\t\t\t},\n\t\t});\n\t\tthis.mc = loggerToMonitoringContext(this.logger);\n\n\t\tconst { opProcessingHelper, callbacksHelper } = this.setUpSampledTelemetryHelpers();\n\t\tthis.opProcessingHelper = opProcessingHelper;\n\t\tthis.callbacksHelper = callbacksHelper;\n\t}\n\n\t/**\n\t * Accessor for `this.runtime`'s {@link @fluidframework/datastore-definitions#IFluidDataStoreRuntime.deltaManager} as a {@link @fluidframework/container-definitions/internal#IDeltaManager}\n\t */\n\tprotected get deltaManager(): IDeltaManager<ISequencedDocumentMessage, IDocumentMessage> {\n\t\treturn toDeltaManagerInternal(this.runtime.deltaManager);\n\t}\n\n\t/**\n\t * This function is only supposed to be called from SharedObjectCore's constructor and\n\t * depends on a few things being set already. assert() calls make sure of it.\n\t * @returns The telemetry sampling helpers, so the constructor can be the one to assign them\n\t * to variables to avoid complaints from TypeScript.\n\t */\n\tprivate setUpSampledTelemetryHelpers(): {\n\t\topProcessingHelper: SampledTelemetryHelper<void, ProcessTelemetryProperties>;\n\t\tcallbacksHelper: SampledTelemetryHelper<boolean>;\n\t} {\n\t\tassert(\n\t\t\tthis.mc !== undefined && this.logger !== undefined,\n\t\t\t0x349 /* this.mc and/or this.logger has not been set */,\n\t\t);\n\t\tconst opProcessingHelper = new SampledTelemetryHelper<void, ProcessTelemetryProperties>(\n\t\t\t{\n\t\t\t\teventName: \"ddsOpProcessing\",\n\t\t\t\tcategory: \"performance\",\n\t\t\t},\n\t\t\tthis.logger,\n\t\t\tthis.mc.config.getNumber(\"Fluid.SharedObject.OpProcessingTelemetrySampling\") ?? 1000,\n\t\t\ttrue,\n\t\t\tnew Map<string, ITelemetryBaseProperties>([\n\t\t\t\t[\"local\", { localOp: true }],\n\t\t\t\t[\"remote\", { localOp: false }],\n\t\t\t]),\n\t\t);\n\t\tconst callbacksHelper = new SampledTelemetryHelper<boolean>(\n\t\t\t{\n\t\t\t\teventName: \"ddsEventCallbacks\",\n\t\t\t\tcategory: \"performance\",\n\t\t\t},\n\t\t\tthis.logger,\n\t\t\tthis.mc.config.getNumber(\"Fluid.SharedObject.DdsCallbacksTelemetrySampling\") ?? 1000,\n\t\t\ttrue,\n\t\t);\n\n\t\tthis.runtime.once(\"dispose\", () => {\n\t\t\tthis.callbacksHelper.dispose();\n\t\t\tthis.opProcessingHelper.dispose();\n\t\t});\n\n\t\treturn { opProcessingHelper, callbacksHelper };\n\t}\n\n\t/**\n\t * Marks this objects as closed. Any attempt to change it (local changes or processing remote ops)\n\t * would result in same error thrown. If called multiple times, only first error is remembered.\n\t * @param error - error object that is thrown whenever an attempt is made to modify this object\n\t */\n\tprivate closeWithError(error: IFluidErrorBase | undefined): void {\n\t\t// eslint-disable-next-line @typescript-eslint/prefer-nullish-coalescing -- using ??= could change behavior if value is falsy\n\t\tif (this.closeError === undefined) {\n\t\t\tthis.closeError = error;\n\t\t}\n\t}\n\n\t/**\n\t * Verifies that this object is not closed via closeWithError(). If it is, throws an error used to close it.\n\t */\n\tprivate verifyNotClosed(): void {\n\t\tif (this.closeError !== undefined) {\n\t\t\tthrow this.closeError;\n\t\t}\n\t}\n\n\t/**\n\t * Event listener handler helper that can be used to react to exceptions thrown from event listeners\n\t * It wraps error with DataProcessingError, closes this object and throws resulting error.\n\t * See closeWithError() for more details\n\t * Ideally such situation never happens, as consumers of DDS should never throw exceptions\n\t * in event listeners (i.e. catch any of the issues and make determination on how to handle it).\n\t * When such exceptions propagate through, most likely data model is no longer consistent, i.e.\n\t * DDS state does not match what user sees. Because of it DDS moves to \"corrupted state\" and does not\n\t * allow processing of ops or local changes, which very quickly results in container closure.\n\t */\n\tprivate eventListenerErrorHandler(event: EventEmitterEventType, e: unknown): void {\n\t\tconst error = DataProcessingError.wrapIfUnrecognized(\n\t\t\te,\n\t\t\t\"SharedObjectEventListenerException\",\n\t\t);\n\t\terror.addTelemetryProperties({ emittedEventName: String(event) });\n\n\t\tthis.closeWithError(error);\n\t\tthrow error;\n\t}\n\n\tprivate setBoundAndHandleAttach(): void {\n\t\t// Ensure didAttach is only called once, and we only register a single event\n\t\t// but we still call setConnectionState as our existing mocks don't\n\t\t// always propagate connection state\n\t\tthis.setBoundAndHandleAttach = () => this.setConnectionState(this.runtime.connected);\n\t\tthis._isBoundToContext = true;\n\t\t// eslint-disable-next-line unicorn/consistent-function-scoping\n\t\tconst runDidAttach: () => void = () => {\n\t\t\t// Allows objects to do any custom processing if it is attached.\n\t\t\tthis.didAttach();\n\t\t\tthis.setConnectionState(this.runtime.connected);\n\t\t};\n\t\tif (this.isAttached()) {\n\t\t\trunDidAttach();\n\t\t} else {\n\t\t\tthis.runtime.once(\"attaching\", runDidAttach);\n\t\t}\n\t}\n\n\t/**\n\t * A shared object, after construction, can either be loaded in the case that it is already part of\n\t * a shared document. Or later attached if it is being newly added.\n\t * @param services - Services used by the shared object\n\t */\n\tpublic async load(services: IChannelServices): Promise<void> {\n\t\tthis.services = services;\n\t\t// set this before load so that isAttached is true\n\t\t// for attached runtimes when load core is running\n\t\tthis._isBoundToContext = true;\n\t\tawait this.loadCore(services.objectStorage);\n\t\tthis.attachDeltaHandler();\n\t\tthis.setBoundAndHandleAttach();\n\t}\n\n\t/**\n\t * Initializes the object as a local, non-shared object. This object can become shared after\n\t * it is attached to the document.\n\t */\n\tpublic initializeLocal(): void {\n\t\tthis.initializeLocalCore();\n\t}\n\n\t/**\n\t * {@inheritDoc (ISharedObject:interface).bindToContext}\n\t */\n\tpublic bindToContext(): void {\n\t\t// ensure the method only runs once by removing the implementation\n\t\t// without this the method suffers from re-entrancy issues\n\t\tthis.bindToContext = () => {};\n\t\tif (!this._isBoundToContext) {\n\t\t\tthis.runtime.bindChannel(this);\n\t\t\t// must set after bind channel so isAttached doesn't report true\n\t\t\t// before binding is complete\n\t\t\tthis.setBoundAndHandleAttach();\n\t\t}\n\t}\n\n\t/**\n\t * {@inheritDoc @fluidframework/datastore-definitions#(IChannel:interface).connect}\n\t */\n\tpublic connect(services: IChannelServices): void {\n\t\t// handle the case where load is called\n\t\t// before connect; loading detached data stores\n\t\tif (this.services === undefined) {\n\t\t\tthis.services = services;\n\t\t\tthis.attachDeltaHandler();\n\t\t}\n\n\t\tthis.setBoundAndHandleAttach();\n\t}\n\n\t/**\n\t * {@inheritDoc @fluidframework/datastore-definitions#(IChannel:interface).isAttached}\n\t */\n\tpublic isAttached(): boolean {\n\t\treturn this._isBoundToContext && this.runtime.attachState !== AttachState.Detached;\n\t}\n\n\t/**\n\t * {@inheritDoc @fluidframework/datastore-definitions#(IChannel:interface).getAttachSummary}\n\t */\n\tpublic abstract getAttachSummary(\n\t\tfullTree?: boolean,\n\t\ttrackState?: boolean,\n\t\ttelemetryContext?: ITelemetryContext,\n\t): ISummaryTreeWithStats;\n\n\t/**\n\t * {@inheritDoc @fluidframework/datastore-definitions#(IChannel:interface).summarize}\n\t */\n\tpublic abstract summarize(\n\t\tfullTree?: boolean,\n\t\ttrackState?: boolean,\n\t\ttelemetryContext?: ITelemetryContext,\n\t): Promise<ISummaryTreeWithStats>;\n\n\t/**\n\t * {@inheritDoc @fluidframework/datastore-definitions#(IChannel:interface).getGCData}\n\t */\n\tpublic abstract getGCData(fullGC?: boolean): IGarbageCollectionData;\n\n\t/**\n\t * Allows the distributed data type to perform custom loading\n\t * @param services - Storage used by the shared object\n\t */\n\tprotected abstract loadCore(services: IChannelStorageService): Promise<void>;\n\n\t/**\n\t * Allows the distributed data type to perform custom local loading.\n\t */\n\tprotected initializeLocalCore(): void {\n\t\treturn;\n\t}\n\n\t/**\n\t * Allows the distributive data type the ability to perform custom processing once an attach has happened.\n\t * Also called after non-local data type get loaded.\n\t */\n\tprotected didAttach(): void {\n\t\treturn;\n\t}\n\n\t/* eslint-disable jsdoc/check-indentation */\n\t/**\n\t * Derived classes must override this to do custom processing on a 'bunch' of remote messages.\n\t * @remarks\n\t * A 'bunch' is a group of messages that have the following properties:\n\t * - They are all part of the same grouped batch, which entails:\n\t *   - They are contiguous in sequencing order.\n\t *   - They are all from the same client.\n\t *   - They are all based on the same reference sequence number.\n\t *   - They are not interleaved with messages from other clients.\n\t * - They are not interleaved with messages from other DDS in the container.\n\t * Derived classes should override this if they need to do custom processing on a 'bunch' of remote messages.\n\t * @param messageCollection - The collection of messages to process.\n\t *\n\t */\n\t/* eslint-enable jsdoc/check-indentation */\n\tprotected abstract processMessagesCore(messagesCollection: IRuntimeMessageCollection): void;\n\n\t/**\n\t * Called when the object has disconnected from the delta stream.\n\t */\n\n\tprotected abstract onDisconnect(): void;\n\n\t/**\n\t * The serializer to serialize / parse handles.\n\t */\n\tprotected abstract get serializer(): IFluidSerializer;\n\n\t/**\n\t * Submits a message by the local client to the runtime.\n\t * @param content - Content of the message. Note: handles contained in the\n\t * message object should not be encoded in any way\n\t * @param localOpMetadata - The local metadata associated with the message. This is kept locally by the runtime\n\t * and not sent to the server. This will be sent back when this message is received back from the server. This is\n\t * also sent if we are asked to resubmit the message.\n\t */\n\tprotected submitLocalMessage(content: unknown, localOpMetadata: unknown = undefined): void {\n\t\tthis.verifyNotClosed();\n\t\tif (this.isAttached()) {\n\t\t\t// NOTE: We may also be encoding in the ContainerRuntime layer.\n\t\t\t// Once the layer-compat window passes we can remove the encoding codepath here altogether\n\t\t\tconst onlyBind =\n\t\t\t\t(this.runtime as IFluidDataStoreRuntimeInternalConfig)\n\t\t\t\t\t.submitMessagesWithoutEncodingHandles === true;\n\t\t\tconst contentToSubmit = onlyBind\n\t\t\t\t? bindHandles(content, this.handle)\n\t\t\t\t: makeHandlesSerializable(content, this.serializer, this.handle);\n\n\t\t\t// eslint-disable-next-line @typescript-eslint/no-non-null-assertion\n\t\t\tthis.services!.deltaConnection.submit(contentToSubmit, localOpMetadata);\n\t\t}\n\t}\n\n\t/**\n\t * Marks this object as dirty so that it is part of the next summary. It is called by a SharedSummaryBlock\n\t * that want to be part of summary but does not generate ops.\n\t */\n\tprotected dirty(): void {\n\t\tif (!this.isAttached()) {\n\t\t\treturn;\n\t\t}\n\n\t\t// eslint-disable-next-line @typescript-eslint/no-non-null-assertion\n\t\tthis.services!.deltaConnection.dirty();\n\t}\n\n\t/**\n\t * Called when the object has fully connected to the delta stream\n\t * Default implementation for DDS, override if different behavior is required.\n\t */\n\tprotected onConnect(): void {}\n\n\t/**\n\t * Called when a message has to be resubmitted. This typically happens after a reconnection for unacked messages.\n\t * The default implementation here is to resubmit the same message. The client can override if different behavior\n\t * is required. It can choose to resubmit the same message, submit different / multiple messages or not submit\n\t * anything at all.\n\t * @param content - The content of the original message.\n\t * @param localOpMetadata - The local metadata associated with the original message.\n\t */\n\tprotected reSubmitCore(content: unknown, localOpMetadata: unknown): void {\n\t\tthis.submitLocalMessage(content, localOpMetadata);\n\t}\n\n\t/**\n\t * Called when a message has to be resubmitted but its content should be \"squashed\" if any subsequent pending changes\n\t * override the content in the fashion described on {@link @fluidframework/datastore-definitions#IDeltaHandler.reSubmit}.\n\t *\n\t * @param content - The content of the original message.\n\t * @param localOpMetadata - The local metadata associated with the original message.\n\t */\n\tprotected reSubmitSquashed(content: unknown, localOpMetadata: unknown): void {\n\t\tconst allowStagingModeWithoutSquashing =\n\t\t\tloggerToMonitoringContext(this.logger).config.getBoolean(\n\t\t\t\t\"Fluid.SharedObject.AllowStagingModeWithoutSquashing\",\n\t\t\t) ??\n\t\t\t(this.runtime.options.allowStagingModeWithoutSquashing as boolean | undefined) ??\n\t\t\ttrue;\n\t\tif (allowStagingModeWithoutSquashing) {\n\t\t\tthis.reSubmitCore(content, localOpMetadata);\n\t\t} else {\n\t\t\tthis.throwUnsupported(\"reSubmitSquashed\");\n\t\t}\n\t}\n\n\t/**\n\t * Promises that are waiting for an ack from the server before resolving should use this instead of new Promise.\n\t * It ensures that if something changes that will interrupt that ack (e.g. the FluidDataStoreRuntime disposes),\n\t * the Promise will reject.\n\t * If runtime is disposed when this call is made, executor is not run and promise is rejected right away.\n\t */\n\tprotected async newAckBasedPromise<T>(\n\t\texecutor: (\n\t\t\tresolve: (value: T | PromiseLike<T>) => void,\n\t\t\treject: (reason?: unknown) => void,\n\t\t) => void,\n\t): Promise<T> {\n\t\tlet rejectBecauseDispose: () => void;\n\t\treturn new Promise<T>((resolve, reject) => {\n\t\t\trejectBecauseDispose = () =>\n\t\t\t\treject(\n\t\t\t\t\tnew Error(\"FluidDataStoreRuntime disposed while this ack-based Promise was pending\"),\n\t\t\t\t);\n\n\t\t\tif (this.runtime.disposed) {\n\t\t\t\trejectBecauseDispose();\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tthis.runtime.on(\"dispose\", rejectBecauseDispose);\n\t\t\texecutor(resolve, reject);\n\t\t}).finally(() => {\n\t\t\t// Note: rejectBecauseDispose will never be undefined here\n\t\t\tthis.runtime.off(\"dispose\", rejectBecauseDispose);\n\t\t});\n\t}\n\n\tprivate attachDeltaHandler(): void {\n\t\t// Services should already be there in case we are attaching delta handler.\n\t\tassert(\n\t\t\tthis.services !== undefined,\n\t\t\t0x07a /* \"Services should be there to attach delta handler\" */,\n\t\t);\n\t\t// attachDeltaHandler is only called after services is assigned\n\t\tthis.services.deltaConnection.attach({\n\t\t\tprocessMessages: (messagesCollection: IRuntimeMessageCollection) => {\n\t\t\t\tthis.processMessages(messagesCollection);\n\t\t\t},\n\t\t\tsetConnectionState: (connected: boolean) => {\n\t\t\t\tthis.setConnectionState(connected);\n\t\t\t},\n\t\t\treSubmit: (content: unknown, localOpMetadata: unknown, squash: boolean) => {\n\t\t\t\tthis.reSubmit(content, localOpMetadata, squash);\n\t\t\t},\n\t\t\tapplyStashedOp: (content: unknown): void => {\n\t\t\t\tthis.applyStashedOp(parseHandles(content, this.serializer));\n\t\t\t},\n\t\t\trollback: (content: unknown, localOpMetadata: unknown) => {\n\t\t\t\tthis.rollback(content, localOpMetadata);\n\t\t\t},\n\t\t} satisfies IDeltaHandler);\n\t}\n\n\t/**\n\t * Set the state of connection to services.\n\t * @param connected - true if connected, false otherwise.\n\t */\n\tprivate setConnectionState(connected: boolean): void {\n\t\t// only an attached shared object can transition its\n\t\t// connected state. This is defensive, as some\n\t\t// of our test harnesses don't handle this correctly\n\t\tif (!this.isAttached() || this._connected === connected) {\n\t\t\t// Not changing state, nothing the same.\n\t\t\treturn;\n\t\t}\n\n\t\t// Should I change the state at the end? So that we *can't* send new stuff before we send old?\n\t\tthis._connected = connected;\n\n\t\tif (connected) {\n\t\t\t// Call this for now so that DDSes like ConsensusOrderedCollection that maintain their own pending\n\t\t\t// messages will work.\n\t\t\tthis.onConnect();\n\t\t} else {\n\t\t\t// Things that are true now...\n\t\t\t// - if we had a connection we can no longer send messages over it\n\t\t\t// - if we had outbound messages some may or may not be ACK'd. Won't know until next message\n\t\t\t//\n\t\t\t// - nack could get a new msn - but might as well do it in the join?\n\t\t\tthis.onDisconnect();\n\t\t}\n\t}\n\n\t/* eslint-disable jsdoc/check-indentation */\n\t/**\n\t * Process a bunch of messages for this shared object. A bunch is group of messages that have the following properties:\n\t * - They are all part of the same grouped batch, which entails:\n\t *   - They are contiguous in sequencing order.\n\t *   - They are all from the same client.\n\t *   - They are all based on the same reference sequence number.\n\t *   - They are not interleaved with messages from other clients.\n\t * - They are not interleaved with messages from other DDS in the container.\n\t * @param messageCollection - The collection of messages to process.\n\t *\n\t */\n\t/* eslint-enable jsdoc/check-indentation */\n\tprivate processMessages(messagesCollection: IRuntimeMessageCollection): void {\n\t\tthis.verifyNotClosed(); // This will result in container closure.\n\n\t\tconst { envelope, local, messagesContent } = messagesCollection;\n\n\t\t// Decode any handles in the contents before processing the messages.\n\t\tconst decodedMessagesContent: IRuntimeMessagesContent[] = [];\n\t\tfor (const { contents, localOpMetadata, clientSequenceNumber } of messagesContent) {\n\t\t\tconst decodedMessageContent: IRuntimeMessagesContent = {\n\t\t\t\tcontents: parseHandles(contents, this.serializer),\n\t\t\t\tlocalOpMetadata,\n\t\t\t\tclientSequenceNumber,\n\t\t\t};\n\t\t\tdecodedMessagesContent.push(decodedMessageContent);\n\t\t}\n\n\t\tconst emitEvents = (event: \"pre-op\" | \"op\"): void => {\n\t\t\tfor (const { contents, clientSequenceNumber } of decodedMessagesContent) {\n\t\t\t\tconst message: ISequencedDocumentMessage = {\n\t\t\t\t\t...envelope,\n\t\t\t\t\tcontents,\n\t\t\t\t\tclientSequenceNumber,\n\t\t\t\t};\n\t\t\t\tthis.emitInternal(event, message, local);\n\t\t\t}\n\t\t};\n\n\t\temitEvents(\"pre-op\");\n\t\tthis.opProcessingHelper.measure(\n\t\t\t(): ICustomData<ProcessTelemetryProperties> => {\n\t\t\t\tconst decodedMessagesCollection: IRuntimeMessageCollection = {\n\t\t\t\t\tenvelope,\n\t\t\t\t\tlocal,\n\t\t\t\t\tmessagesContent: decodedMessagesContent,\n\t\t\t\t};\n\t\t\t\tthis.processMessagesCore(decodedMessagesCollection);\n\t\t\t\tconst telemetryProperties: ProcessTelemetryProperties = {\n\t\t\t\t\tsequenceDifference: envelope.sequenceNumber - envelope.referenceSequenceNumber,\n\t\t\t\t};\n\t\t\t\treturn {\n\t\t\t\t\tcustomData: telemetryProperties,\n\t\t\t\t};\n\t\t\t},\n\t\t\tlocal ? \"local\" : \"remote\",\n\t\t);\n\t\temitEvents(\"op\");\n\t}\n\n\t/**\n\t * Called when a message has to be resubmitted. This typically happens for unacked messages after a\n\t * reconnection.\n\t * @param content - The content of the original message.\n\t * @param localOpMetadata - The local metadata associated with the original message.\n\t * @param squash - If `true`, the message will be resubmitted in a squashed form. If `false`,\n\t * the legacy behavior (no squashing) will be used.\n\t */\n\tprivate reSubmit(content: unknown, localOpMetadata: unknown, squash: boolean): void {\n\t\tif (squash) {\n\t\t\tthis.reSubmitSquashed(content, localOpMetadata);\n\t\t} else {\n\t\t\tthis.reSubmitCore(content, localOpMetadata);\n\t\t}\n\t}\n\n\t/**\n\t * Revert an op\n\t */\n\tprotected rollback(content: unknown, localOpMetadata: unknown): void {\n\t\tthis.throwUnsupported(\"rollback\");\n\t}\n\n\t/**\n\t * Apply changes from the provided op content just as if a local client has made the change,\n\t * including submitting the op. Used when rehydrating an attached container\n\t * with pending changes. The rehydration process replays all remote ops\n\t * and applies stashed ops after the remote op with a sequence number\n\t * that matches that of the stashed op is applied. This ensures\n\t * stashed ops are applied at the same state they were originally created.\n\t *\n\t * It is possible that stashed ops have been sent in the past, and will be found when\n\t * the shared object catches up with remotes ops.\n\t * So this prepares the SharedObject for seeing potentially seeing the ACK.\n\t * If no matching remote op is found, all the applied stashed ops will go\n\t * through the normal resubmit flow upon reconnection, which allows the dds\n\t * to rebase them to the latest state, and then resubmit them.\n\t *\n\t * @param content - Contents of a stashed op.\n\t */\n\tprotected abstract applyStashedOp(content: unknown): void;\n\n\t/**\n\t * Emit an event. This function is only intended for use by DDS classes that extend SharedObject/SharedObjectCore,\n\t * specifically to emit events that are part of the public interface of the DDS (i.e. those that can have listeners\n\t * attached to them by the consumers of the DDS). It should not be called from outside the class or to emit events\n\t * which are only internal to the DDS. Support for calling it from outside the DDS instance might be removed in the\n\t * future.\n\t * @param event - The event to emit.\n\t * @param args - Arguments to pass to the event listeners.\n\t * @returns `true` if the event had listeners, `false` otherwise.\n\t */\n\tpublic emit(event: EventEmitterEventType, ...args: any[]): boolean {\n\t\treturn this.callbacksHelper.measure(() => {\n\t\t\t// eslint-disable-next-line @typescript-eslint/no-unsafe-argument\n\t\t\treturn super.emit(event, ...args);\n\t\t});\n\t}\n\n\t/**\n\t * Use to emit events inside {@link SharedObjectCore}, with no telemetry measurement\n\t * done on the duration of the callbacks. Simply calls `super.emit()`.\n\t * @param event - Event to emit\n\t * @param args - Arguments for the event\n\t * @returns Whatever `super.emit()` returns.\n\t */\n\tprivate emitInternal(event: EventEmitterEventType, ...args: unknown[]): boolean {\n\t\treturn super.emit(event, ...args);\n\t}\n\n\tprivate throwUnsupported(featureName: string): never {\n\t\tthrow new LoggingError(\"Unsupported DDS feature\", {\n\t\t\tfeatureName,\n\t\t\t...tagCodeArtifacts({ ddsType: this.attributes.type }),\n\t\t});\n\t}\n}\n\n/**\n * Helper for implementing {@link ISharedObject} with simplified, synchronous summarization and garbage collection.\n * @remarks\n * DDS implementations with async and incremental summarization should extend {@link SharedObjectCore} directly instead.\n * @privateRemarks\n * TODO:\n * This class is badly named.\n * Once it becomes `@internal` \"SharedObjectCore\" should probably become \"SharedObject\"\n * and this class should be renamed to something like \"SharedObjectSynchronous\".\n * @legacy @beta\n */\nexport abstract class SharedObject<\n\tTEvent extends ISharedObjectEvents = ISharedObjectEvents,\n> extends SharedObjectCore<TEvent> {\n\t/**\n\t * True while we are garbage collecting this object's data.\n\t */\n\tprivate _isGCing: boolean = false;\n\n\t/**\n\t * The serializer to use to serialize / parse handles, if any.\n\t */\n\tprivate readonly _serializer: IFluidSerializer;\n\n\tprotected get serializer(): IFluidSerializer {\n\t\t/**\n\t\t * During garbage collection, the GCHandleVisitor \"serializer\" keeps track of IFluidHandles that are serialized. These\n\t\t * handles represent references to other Fluid objects.\n\t\t *\n\t\t * This is fine for now. However, if we implement delay loading in DDSes, they may load and de-serialize content\n\t\t * in summarize. When that happens, they may incorrectly hit this assert and we will have to change this.\n\t\t */\n\t\tassert(\n\t\t\t!this._isGCing,\n\t\t\t0x075 /* \"SummarySerializer should be used for serializing data during summary.\" */,\n\t\t);\n\t\treturn this._serializer;\n\t}\n\n\tconstructor(\n\t\tid: string,\n\t\truntime: IFluidDataStoreRuntime,\n\t\tattributes: IChannelAttributes,\n\t\t/**\n\t\t * The prefix to use for telemetry events emitted by this object.\n\t\t */\n\t\tprivate readonly telemetryContextPrefix: string,\n\t) {\n\t\tsuper(id, runtime, attributes);\n\n\t\tthis._serializer = new FluidSerializer(this.runtime.channelsRoutingContext);\n\t}\n\n\t/**\n\t * {@inheritDoc @fluidframework/datastore-definitions#(IChannel:interface).getAttachSummary}\n\t */\n\tpublic getAttachSummary(\n\t\tfullTree: boolean = false,\n\t\ttrackState: boolean = false,\n\t\ttelemetryContext?: ITelemetryContext,\n\t): ISummaryTreeWithStats {\n\t\tconst result = this.summarizeCore(\n\t\t\tthis.serializer,\n\t\t\ttelemetryContext,\n\t\t\tundefined /* incrementalSummaryContext */,\n\t\t\tfullTree,\n\t\t);\n\t\tthis.incrementTelemetryMetric(\n\t\t\tblobCountPropertyName,\n\t\t\tresult.stats.blobNodeCount,\n\t\t\ttelemetryContext,\n\t\t);\n\t\tthis.incrementTelemetryMetric(\n\t\t\ttotalBlobSizePropertyName,\n\t\t\tresult.stats.totalBlobSize,\n\t\t\ttelemetryContext,\n\t\t);\n\t\treturn result;\n\t}\n\n\t/**\n\t * {@inheritDoc @fluidframework/datastore-definitions#(IChannel:interface).summarize}\n\t */\n\tpublic async summarize(\n\t\tfullTree: boolean = false,\n\t\ttrackState: boolean = false,\n\t\ttelemetryContext?: ITelemetryContext,\n\t\tincrementalSummaryContext?: IExperimentalIncrementalSummaryContext,\n\t): Promise<ISummaryTreeWithStats> {\n\t\tconst result = this.summarizeCore(\n\t\t\tthis.serializer,\n\t\t\ttelemetryContext,\n\t\t\tincrementalSummaryContext,\n\t\t\tfullTree,\n\t\t);\n\t\tthis.incrementTelemetryMetric(\n\t\t\tblobCountPropertyName,\n\t\t\tresult.stats.blobNodeCount,\n\t\t\ttelemetryContext,\n\t\t);\n\t\tthis.incrementTelemetryMetric(\n\t\t\ttotalBlobSizePropertyName,\n\t\t\tresult.stats.totalBlobSize,\n\t\t\ttelemetryContext,\n\t\t);\n\t\treturn result;\n\t}\n\n\t/**\n\t * {@inheritDoc @fluidframework/datastore-definitions#(IChannel:interface).getGCData}\n\t */\n\tpublic getGCData(fullGC: boolean = false): IGarbageCollectionData {\n\t\t// Set _isGCing to true. This flag is used to ensure that we only use GCHandleVisitor in this codepath and not when trying to truly serialize.\n\t\tassert(\n\t\t\t!this._isGCing,\n\t\t\t0x078 /* \"Possible re-entrancy! Summary should not already be in progress.\" */,\n\t\t);\n\t\tthis._isGCing = true;\n\n\t\tlet gcData: IGarbageCollectionData;\n\t\ttry {\n\t\t\tconst handleVisitor = new GCHandleVisitor(this.runtime.channelsRoutingContext);\n\t\t\tthis.processGCDataCore(handleVisitor);\n\t\t\t// The GC data for this shared object contains a single GC node. The outbound routes of this node are the\n\t\t\t// routes of handles serialized during summarization.\n\t\t\tgcData = { gcNodes: { \"/\": handleVisitor.getVisitedHandlePaths() } };\n\t\t\tassert(\n\t\t\t\tthis._isGCing,\n\t\t\t\t0x079 /* \"Possible re-entrancy! Summary should have been in progress.\" */,\n\t\t\t);\n\t\t} finally {\n\t\t\tthis._isGCing = false;\n\t\t}\n\n\t\treturn gcData;\n\t}\n\n\t/**\n\t * Calls the serializer over all data in this object that reference other GC nodes.\n\t * Derived classes must override this to provide custom list of references to other GC nodes.\n\t *\n\t * @remarks Serialization itself doesn't matter (the result is ignored). We're tapping into the serialization infrastructure\n\t * as a way to visit all the content in this content that may reference other objects via handle.\n\t *\n\t * @param serializer - The \"serializer\" (more like handle visitor) to use.\n\t * Implementations should ensure that serialize is called on all handles, as the way to visit them.\n\t */\n\tprotected processGCDataCore(serializer: IFluidSerializer): void {\n\t\t// We run the full summarize logic to get the list of outbound routes from this object. This is a little\n\t\t// expensive but its okay for now. It will be updated to not use full summarize and make it more efficient.\n\t\t// See: https://github.com/microsoft/FluidFramework/issues/4547\n\t\tthis.summarizeCore(serializer);\n\t}\n\n\t/**\n\t * Gets a form of the object that can be serialized.\n\t * @returns A tree representing the snapshot of the shared object.\n\t */\n\tprotected abstract summarizeCore(\n\t\tserializer: IFluidSerializer,\n\t\ttelemetryContext?: ITelemetryContext,\n\t\tincrementalSummaryContext?: IExperimentalIncrementalSummaryContext,\n\t\tfullTree?: boolean,\n\t): ISummaryTreeWithStats;\n\n\tprivate incrementTelemetryMetric(\n\t\tpropertyName: string,\n\t\tincrementBy: number,\n\t\ttelemetryContext?: ITelemetryContext,\n\t): void {\n\t\tif (telemetryContext !== undefined) {\n\t\t\t// TelemetryContext needs to implment a get function\n\t\t\tassert(\n\t\t\t\t\"get\" in telemetryContext && typeof telemetryContext.get === \"function\",\n\t\t\t\t0x97e /* received context must have a get function */,\n\t\t\t);\n\n\t\t\tconst prevTotal = ((telemetryContext as TelemetryContext).get(\n\t\t\t\tthis.telemetryContextPrefix,\n\t\t\t\tpropertyName,\n\t\t\t) ?? 0) as number;\n\t\t\ttelemetryContext.set(this.telemetryContextPrefix, propertyName, prevTotal + incrementBy);\n\t\t}\n\t}\n}\n\n/**\n * Defines a kind of shared object.\n * Used in containers to register a shared object implementation, and to create new instances of a given type of shared object.\n *\n * @remarks\n * For use internally and in the \"encapsulated API\".\n * See {@link SharedObjectKind} for the type erased version for use in the public declarative API.\n *\n * @privateRemarks\n * This does not extend {@link SharedObjectKind} since doing so would prevent implementing this interface in type safe code.\n * Any implementation of this can safely be used as a {@link SharedObjectKind} with an explicit type conversion,\n * but doing so is typically not needed as {@link createSharedObjectKind} is used to produce values that are both types simultaneously.\n * @legacy @beta\n */\nexport interface ISharedObjectKind<TSharedObject> {\n\t/**\n\t * Get a factory which can be used by the Fluid Framework to programmatically instantiate shared objects within containers.\n\t * @remarks\n\t * The produced factory is intended for use with the FluidDataStoreRegistry and is used by the Fluid Framework to instantiate already existing Channels.\n\t * To create new shared objects use:\n\t *\n\t * - {@link @fluidframework/fluid-static#IFluidContainer.create} if using `@fluidframework/fluid-static`, for example via `@fluidframework/azure-client`.\n\t *\n\t * - {@link ISharedObjectKind.create} if using a custom container definitions (and thus not using {@link @fluidframework/fluid-static#IFluidContainer}).\n\t */\n\tgetFactory(): IChannelFactory<TSharedObject>;\n\n\t/**\n\t * Create a shared object.\n\t * @param runtime - The data store runtime that the new shared object belongs to.\n\t * @param id - Optional name of the shared object.\n\t * @returns Newly created shared object.\n\t *\n\t * @example\n\t * To create a `SharedTree`, call the static create method:\n\t *\n\t * ```typescript\n\t * const myTree = SharedTree.create(this.runtime, id);\n\t * ```\n\t * @remarks\n\t * The created object is local (detached): insert a handle to it into an attached object to share (attach) it.\n\t * If using `@fluidframework/fluid-static` (for example via `@fluidframework/azure-client`), use {@link @fluidframework/fluid-static#IFluidContainer.create} instead of calling this directly.\n\t *\n\t * @privateRemarks\n\t * This can only be used with a `MockFluidDataStoreRuntime` when that mock is created with a `registry` containing a factory for this shared object.\n\t */\n\tcreate(runtime: IFluidDataStoreRuntime, id?: string): TSharedObject;\n}\n\n/**\n * Defines a kind of shared object.\n * @remarks\n * Used in containers to register a shared object implementation, and to create new instances of a given type of shared object.\n * See {@link @fluidframework/fluid-static#IFluidContainer.create} and {@link @fluidframework/fluid-static#ContainerSchema} for details.\n * @privateRemarks\n * Part of the \"declarative API\".\n * Type erased reference to an {@link ISharedObjectKind} or a DataObject class in for use in\n * `fluid-static`'s `IFluidContainer` and `ContainerSchema`.\n * Use {@link createSharedObjectKind} to creating an instance of this type.\n * @sealed\n * @public\n */\nexport interface SharedObjectKind<out TSharedObject = unknown>\n\textends ErasedType<readonly [\"SharedObjectKind\", TSharedObject]> {\n\t/**\n\t * Check whether an {@link @fluidframework/core-interfaces#IFluidLoadable} is an instance of this shared object kind.\n\t * @remarks This should be used in place of `instanceof` checks for shared objects, as their actual classes are not exported in Fluid's public API.\n\t */\n\tis(value: IFluidLoadable): value is IFluidLoadable & TSharedObject;\n}\n\n/**\n * Utility for creating ISharedObjectKind instances.\n * @remarks\n * This takes in a class which implements IChannelFactory,\n * and uses it to return a a single value which is intended to be used as the API entry point for the corresponding shared object type.\n * The returned value implements {@link ISharedObjectKind} for use in the encapsulated API, as well as the type erased {@link SharedObjectKind} used by the declarative API.\n * See {@link @fluidframework/fluid-static#ContainerSchema} for how this is used in the declarative API.\n * @internal\n */\nexport function createSharedObjectKind<TSharedObject>(\n\tfactory: (new () => IChannelFactory<TSharedObject>) & { readonly Type: string },\n): ISharedObjectKind<TSharedObject> & SharedObjectKind<TSharedObject> {\n\tconst result: ISharedObjectKind<TSharedObject> &\n\t\tOmit<SharedObjectKind<TSharedObject>, \"brand\"> = {\n\t\tgetFactory(): IChannelFactory<TSharedObject> {\n\t\t\treturn new factory();\n\t\t},\n\n\t\tcreate(runtime: IFluidDataStoreRuntime, id?: string): TSharedObject {\n\t\t\treturn runtime.createChannel(id, factory.Type) as TSharedObject;\n\t\t},\n\n\t\tis(value: IFluidLoadable): value is IFluidLoadable & TSharedObject {\n\t\t\treturn isChannel(value) && value.attributes.type === factory.Type;\n\t\t},\n\t};\n\n\treturn result as typeof result & SharedObjectKind<TSharedObject>;\n}\n\nfunction isChannel(loadable: IFluidLoadable): loadable is IChannel {\n\t// This assumes no other IFluidLoadable has an `attributes` field, and thus may not be fully robust.\n\treturn (loadable as IChannel).attributes !== undefined;\n}\n"]}
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* Copyright (c) Microsoft Corporation and contributors. All rights reserved.\n * Licensed under the MIT License.\n */\n\nimport type { EventEmitterEventType } from \"@fluid-internal/client-utils\";\nimport { AttachState } from \"@fluidframework/container-definitions\";\nimport type { IDeltaManager } from \"@fluidframework/container-definitions/internal\";\nimport type { ITelemetryBaseProperties, ErasedType } from \"@fluidframework/core-interfaces\";\nimport type {\n\tIFluidHandleInternal,\n\tIFluidLoadable,\n} from \"@fluidframework/core-interfaces/internal\";\nimport { assert } from \"@fluidframework/core-utils/internal\";\nimport type {\n\tIChannelServices,\n\tIChannelStorageService,\n\tIChannel,\n\tIChannelAttributes,\n\tIChannelFactory,\n\tIFluidDataStoreRuntime,\n\tIDeltaHandler,\n\tIFluidDataStoreRuntimeInternalConfig,\n} from \"@fluidframework/datastore-definitions/internal\";\nimport type {\n\tIDocumentMessage,\n\tISequencedDocumentMessage,\n} from \"@fluidframework/driver-definitions/internal\";\nimport {\n\ttype IExperimentalIncrementalSummaryContext,\n\ttype ISummaryTreeWithStats,\n\ttype ITelemetryContext,\n\ttype IGarbageCollectionData,\n\tblobCountPropertyName,\n\ttotalBlobSizePropertyName,\n\ttype IRuntimeMessageCollection,\n\ttype IRuntimeMessagesContent,\n} from \"@fluidframework/runtime-definitions/internal\";\nimport {\n\ttoDeltaManagerInternal,\n\ttype TelemetryContext,\n} from \"@fluidframework/runtime-utils/internal\";\nimport {\n\ttype ITelemetryLoggerExt,\n\tDataProcessingError,\n\tEventEmitterWithErrorHandling,\n\ttype MonitoringContext,\n\tSampledTelemetryHelper,\n\tcreateChildLogger,\n\tloggerToMonitoringContext,\n\ttagCodeArtifacts,\n\ttype ICustomData,\n\ttype IFluidErrorBase,\n\tLoggingError,\n} from \"@fluidframework/telemetry-utils/internal\";\nimport { v4 as uuid } from \"uuid\";\n\nimport { GCHandleVisitor } from \"./gcHandleVisitor.js\";\nimport { SharedObjectHandle } from \"./handle.js\";\nimport { FluidSerializer, type IFluidSerializer } from \"./serializer.js\";\nimport type { ISharedObject, ISharedObjectEvents } from \"./types.js\";\nimport { bindHandles, makeHandlesSerializable, parseHandles } from \"./utils.js\";\n\n/**\n * Custom telemetry properties used in {@link SharedObjectCore} to instantiate {@link TelemetryEventBatcher} class.\n * This interface is used to define the properties that will be passed to the {@link TelemetryEventBatcher.measure} function\n * which is called in the {@link SharedObjectCore.process} method.\n */\ninterface ProcessTelemetryProperties {\n\tsequenceDifference: number;\n}\n\n/**\n * Base class from which all {@link ISharedObject|shared objects} derive.\n * @remarks\n * This class implements common behaviors that implementations of {@link ISharedObject} may want to reuse.\n * Even more such behaviors are implemented in the {@link SharedObject} class.\n * @privateRemarks\n * Currently some documentation (like the above) implies that this is supposed to be the only implementation of ISharedObject, which is both package-exported and not `@sealed`.\n * This situation should be clarified to indicate if other implementations of ISharedObject are allowed and just currently don't exist,\n * or if the intention is that no other implementations should exist and creating some might break things.\n * As part of this, any existing implementations of ISharedObject (via SharedObjectCore or otherwise) in use by legacy API users will need to be considered.\n *\n * TODO:\n * This class should eventually be made internal, as custom subclasses of it outside this repository are intended to be made unsupported in the future.\n * @legacy @beta\n */\nexport abstract class SharedObjectCore<\n\t\tTEvent extends ISharedObjectEvents = ISharedObjectEvents,\n\t>\n\textends EventEmitterWithErrorHandling<TEvent>\n\timplements ISharedObject<TEvent>\n{\n\tpublic get IFluidLoadable(): this {\n\t\treturn this;\n\t}\n\n\tprivate readonly opProcessingHelper: SampledTelemetryHelper<\n\t\tvoid,\n\t\tProcessTelemetryProperties\n\t>;\n\tprivate readonly callbacksHelper: SampledTelemetryHelper<boolean>;\n\n\t/**\n\t * The handle referring to this SharedObject\n\t */\n\tpublic readonly handle: IFluidHandleInternal;\n\n\t/**\n\t * Telemetry logger for the shared object\n\t */\n\tprotected readonly logger: ITelemetryLoggerExt;\n\tprivate readonly mc: MonitoringContext;\n\n\t/**\n\t * Connection state\n\t */\n\tprivate _connected = false;\n\n\t/**\n\t * Services used by the shared object\n\t */\n\tprivate services: IChannelServices | undefined;\n\n\t/**\n\t * True if the dds is bound to its parent.\n\t */\n\tprivate _isBoundToContext: boolean = false;\n\n\t/**\n\t * Tracks error that closed this object.\n\t */\n\tprivate closeError?: ReturnType<typeof DataProcessingError.wrapIfUnrecognized>;\n\n\t/**\n\t * Gets the connection state\n\t * @returns The state of the connection\n\t */\n\tpublic get connected(): boolean {\n\t\treturn this._connected;\n\t}\n\n\tconstructor(\n\t\t/**\n\t\t * The ID of the shared object.\n\t\t */\n\t\tpublic id: string,\n\t\t/**\n\t\t * The runtime instance that contains the Shared Object.\n\t\t */\n\t\tprotected runtime: IFluidDataStoreRuntime,\n\t\t/**\n\t\t * The attributes of the Shared Object.\n\t\t */\n\t\tpublic readonly attributes: IChannelAttributes,\n\t) {\n\t\tsuper((event: EventEmitterEventType, e: unknown) =>\n\t\t\tthis.eventListenerErrorHandler(event, e),\n\t\t);\n\n\t\tassert(!id.includes(\"/\"), 0x304 /* Id cannot contain slashes */);\n\n\t\tthis.handle = new SharedObjectHandle(this, id, runtime);\n\n\t\tthis.logger = createChildLogger({\n\t\t\tlogger: runtime.logger,\n\t\t\tproperties: {\n\t\t\t\tall: {\n\t\t\t\t\tsharedObjectId: uuid(),\n\t\t\t\t\t...tagCodeArtifacts({\n\t\t\t\t\t\tddsType: this.attributes.type,\n\t\t\t\t\t}),\n\t\t\t\t},\n\t\t\t},\n\t\t});\n\t\tthis.mc = loggerToMonitoringContext(this.logger);\n\n\t\tconst { opProcessingHelper, callbacksHelper } = this.setUpSampledTelemetryHelpers();\n\t\tthis.opProcessingHelper = opProcessingHelper;\n\t\tthis.callbacksHelper = callbacksHelper;\n\t}\n\n\t/**\n\t * Accessor for `this.runtime`'s {@link @fluidframework/datastore-definitions#IFluidDataStoreRuntime.deltaManager} as a {@link @fluidframework/container-definitions/internal#IDeltaManager}\n\t */\n\tprotected get deltaManager(): IDeltaManager<ISequencedDocumentMessage, IDocumentMessage> {\n\t\treturn toDeltaManagerInternal(this.runtime.deltaManager);\n\t}\n\n\t/**\n\t * This function is only supposed to be called from SharedObjectCore's constructor and\n\t * depends on a few things being set already. assert() calls make sure of it.\n\t * @returns The telemetry sampling helpers, so the constructor can be the one to assign them\n\t * to variables to avoid complaints from TypeScript.\n\t */\n\tprivate setUpSampledTelemetryHelpers(): {\n\t\topProcessingHelper: SampledTelemetryHelper<void, ProcessTelemetryProperties>;\n\t\tcallbacksHelper: SampledTelemetryHelper<boolean>;\n\t} {\n\t\tassert(\n\t\t\tthis.mc !== undefined && this.logger !== undefined,\n\t\t\t0x349 /* this.mc and/or this.logger has not been set */,\n\t\t);\n\t\tconst opProcessingHelper = new SampledTelemetryHelper<void, ProcessTelemetryProperties>(\n\t\t\t{\n\t\t\t\teventName: \"ddsOpProcessing\",\n\t\t\t\tcategory: \"performance\",\n\t\t\t},\n\t\t\tthis.logger,\n\t\t\tthis.mc.config.getNumber(\"Fluid.SharedObject.OpProcessingTelemetrySampling\") ?? 1000,\n\t\t\ttrue,\n\t\t\tnew Map<string, ITelemetryBaseProperties>([\n\t\t\t\t[\"local\", { localOp: true }],\n\t\t\t\t[\"remote\", { localOp: false }],\n\t\t\t]),\n\t\t);\n\t\tconst callbacksHelper = new SampledTelemetryHelper<boolean>(\n\t\t\t{\n\t\t\t\teventName: \"ddsEventCallbacks\",\n\t\t\t\tcategory: \"performance\",\n\t\t\t},\n\t\t\tthis.logger,\n\t\t\tthis.mc.config.getNumber(\"Fluid.SharedObject.DdsCallbacksTelemetrySampling\") ?? 1000,\n\t\t\ttrue,\n\t\t);\n\n\t\tthis.runtime.once(\"dispose\", () => {\n\t\t\tthis.callbacksHelper.dispose();\n\t\t\tthis.opProcessingHelper.dispose();\n\t\t});\n\n\t\treturn { opProcessingHelper, callbacksHelper };\n\t}\n\n\t/**\n\t * Marks this objects as closed. Any attempt to change it (local changes or processing remote ops)\n\t * would result in same error thrown. If called multiple times, only first error is remembered.\n\t * @param error - error object that is thrown whenever an attempt is made to modify this object\n\t */\n\tprivate closeWithError(error: IFluidErrorBase | undefined): void {\n\t\t// eslint-disable-next-line @typescript-eslint/prefer-nullish-coalescing -- using ??= could change behavior if value is falsy\n\t\tif (this.closeError === undefined) {\n\t\t\tthis.closeError = error;\n\t\t}\n\t}\n\n\t/**\n\t * Verifies that this object is not closed via closeWithError(). If it is, throws an error used to close it.\n\t */\n\tprivate verifyNotClosed(): void {\n\t\tif (this.closeError !== undefined) {\n\t\t\tthrow this.closeError;\n\t\t}\n\t}\n\n\t/**\n\t * Event listener handler helper that can be used to react to exceptions thrown from event listeners\n\t * It wraps error with DataProcessingError, closes this object and throws resulting error.\n\t * See closeWithError() for more details\n\t * Ideally such situation never happens, as consumers of DDS should never throw exceptions\n\t * in event listeners (i.e. catch any of the issues and make determination on how to handle it).\n\t * When such exceptions propagate through, most likely data model is no longer consistent, i.e.\n\t * DDS state does not match what user sees. Because of it DDS moves to \"corrupted state\" and does not\n\t * allow processing of ops or local changes, which very quickly results in container closure.\n\t */\n\tprivate eventListenerErrorHandler(event: EventEmitterEventType, e: unknown): void {\n\t\tconst error = DataProcessingError.wrapIfUnrecognized(\n\t\t\te,\n\t\t\t\"SharedObjectEventListenerException\",\n\t\t);\n\t\terror.addTelemetryProperties({ emittedEventName: String(event) });\n\n\t\tthis.closeWithError(error);\n\t\tthrow error;\n\t}\n\n\tprivate setBoundAndHandleAttach(): void {\n\t\t// Ensure didAttach is only called once, and we only register a single event\n\t\t// but we still call setConnectionState as our existing mocks don't\n\t\t// always propagate connection state\n\t\tthis.setBoundAndHandleAttach = () => this.setConnectionState(this.runtime.connected);\n\t\tthis._isBoundToContext = true;\n\t\t// eslint-disable-next-line unicorn/consistent-function-scoping\n\t\tconst runDidAttach: () => void = () => {\n\t\t\t// Allows objects to do any custom processing if it is attached.\n\t\t\tthis.didAttach();\n\t\t\tthis.setConnectionState(this.runtime.connected);\n\t\t};\n\t\tif (this.isAttached()) {\n\t\t\trunDidAttach();\n\t\t} else {\n\t\t\tthis.runtime.once(\"attaching\", runDidAttach);\n\t\t}\n\t}\n\n\t/**\n\t * A shared object, after construction, can either be loaded in the case that it is already part of\n\t * a shared document. Or later attached if it is being newly added.\n\t * @param services - Services used by the shared object\n\t */\n\tpublic async load(services: IChannelServices): Promise<void> {\n\t\tthis.services = services;\n\t\t// set this before load so that isAttached is true\n\t\t// for attached runtimes when load core is running\n\t\tthis._isBoundToContext = true;\n\t\tawait this.loadCore(services.objectStorage);\n\t\tthis.attachDeltaHandler();\n\t\tthis.setBoundAndHandleAttach();\n\t}\n\n\t/**\n\t * Initializes the object as a local, non-shared object. This object can become shared after\n\t * it is attached to the document.\n\t */\n\tpublic initializeLocal(): void {\n\t\tthis.initializeLocalCore();\n\t}\n\n\t/**\n\t * {@inheritDoc (ISharedObject:interface).bindToContext}\n\t */\n\tpublic bindToContext(): void {\n\t\t// ensure the method only runs once by removing the implementation\n\t\t// without this the method suffers from re-entrancy issues\n\t\tthis.bindToContext = () => {};\n\t\tif (!this._isBoundToContext) {\n\t\t\tthis.runtime.bindChannel(this);\n\t\t\t// must set after bind channel so isAttached doesn't report true\n\t\t\t// before binding is complete\n\t\t\tthis.setBoundAndHandleAttach();\n\t\t}\n\t}\n\n\t/**\n\t * {@inheritDoc @fluidframework/datastore-definitions#(IChannel:interface).connect}\n\t */\n\tpublic connect(services: IChannelServices): void {\n\t\t// handle the case where load is called\n\t\t// before connect; loading detached data stores\n\t\tif (this.services === undefined) {\n\t\t\tthis.services = services;\n\t\t\tthis.attachDeltaHandler();\n\t\t}\n\n\t\tthis.setBoundAndHandleAttach();\n\t}\n\n\t/**\n\t * {@inheritDoc @fluidframework/datastore-definitions#(IChannel:interface).isAttached}\n\t */\n\tpublic isAttached(): boolean {\n\t\treturn this._isBoundToContext && this.runtime.attachState !== AttachState.Detached;\n\t}\n\n\t/**\n\t * {@inheritDoc @fluidframework/datastore-definitions#(IChannel:interface).getAttachSummary}\n\t */\n\tpublic abstract getAttachSummary(\n\t\tfullTree?: boolean,\n\t\ttrackState?: boolean,\n\t\ttelemetryContext?: ITelemetryContext,\n\t): ISummaryTreeWithStats;\n\n\t/**\n\t * {@inheritDoc @fluidframework/datastore-definitions#(IChannel:interface).summarize}\n\t */\n\tpublic abstract summarize(\n\t\tfullTree?: boolean,\n\t\ttrackState?: boolean,\n\t\ttelemetryContext?: ITelemetryContext,\n\t): Promise<ISummaryTreeWithStats>;\n\n\t/**\n\t * {@inheritDoc @fluidframework/datastore-definitions#(IChannel:interface).getGCData}\n\t */\n\tpublic abstract getGCData(fullGC?: boolean): IGarbageCollectionData;\n\n\t/**\n\t * Allows the distributed data type to perform custom loading\n\t * @param services - Storage used by the shared object\n\t */\n\tprotected abstract loadCore(services: IChannelStorageService): Promise<void>;\n\n\t/**\n\t * Allows the distributed data type to perform custom local loading.\n\t */\n\tprotected initializeLocalCore(): void {\n\t\treturn;\n\t}\n\n\t/**\n\t * Allows the distributive data type the ability to perform custom processing once an attach has happened.\n\t * Also called after non-local data type get loaded.\n\t */\n\tprotected didAttach(): void {\n\t\treturn;\n\t}\n\n\t/**\n\t * Apply a 'bunch' of sequenced ops to this shared object.\n\t * @remarks\n\t * See {@link @fluidframework/runtime-definitions#IRuntimeMessageCollection} for what a \"bunch\" is.\n\t *\n\t * These ops have been sequenced by the service and now have a finalized ordering.\n\t * They may be local or remote ops, but they cannot be ops that are still pending acknowledgement from the service.\n\t *\n\t * @param messageCollection - The 'bunch' of sequenced ops to apply to this shared object.\n\t * @privateRemarks\n\t * TODO:Performance: AB#59783: Allowing this to process more messages at once (more than the current definition of 'bunch') could improve performance of clients which fall behind,\n\t * which is one of the most important performance sensitive scenarios.\n\t */\n\tprotected abstract processMessagesCore(messagesCollection: IRuntimeMessageCollection): void;\n\n\t/**\n\t * Called when the object has disconnected from the delta stream.\n\t */\n\tprotected abstract onDisconnect(): void;\n\n\t/**\n\t * The serializer to serialize / parse handles.\n\t */\n\tprotected abstract get serializer(): IFluidSerializer;\n\n\t/**\n\t * Submits a message by the local client to the runtime.\n\t * @param content - Content of the message. Note: handles contained in the\n\t * message object should not be encoded in any way\n\t * @param localOpMetadata - The local metadata associated with the message. This is kept locally by the runtime\n\t * and not sent to the server. This will be sent back when this message is received back from the server. This is\n\t * also sent if we are asked to resubmit the message.\n\t */\n\tprotected submitLocalMessage(content: unknown, localOpMetadata: unknown = undefined): void {\n\t\tthis.verifyNotClosed();\n\t\tif (this.isAttached()) {\n\t\t\t// NOTE: We may also be encoding in the ContainerRuntime layer.\n\t\t\t// Once the layer-compat window passes we can remove the encoding codepath here altogether\n\t\t\tconst onlyBind =\n\t\t\t\t(this.runtime as IFluidDataStoreRuntimeInternalConfig)\n\t\t\t\t\t.submitMessagesWithoutEncodingHandles === true;\n\t\t\tconst contentToSubmit = onlyBind\n\t\t\t\t? bindHandles(content, this.handle)\n\t\t\t\t: makeHandlesSerializable(content, this.serializer, this.handle);\n\n\t\t\t// eslint-disable-next-line @typescript-eslint/no-non-null-assertion\n\t\t\tthis.services!.deltaConnection.submit(contentToSubmit, localOpMetadata);\n\t\t}\n\t}\n\n\t/**\n\t * Marks this object as dirty so that it is part of the next summary. It is called by a SharedSummaryBlock\n\t * that want to be part of summary but does not generate ops.\n\t */\n\tprotected dirty(): void {\n\t\tif (!this.isAttached()) {\n\t\t\treturn;\n\t\t}\n\n\t\t// eslint-disable-next-line @typescript-eslint/no-non-null-assertion\n\t\tthis.services!.deltaConnection.dirty();\n\t}\n\n\t/**\n\t * Called when the object has fully connected to the delta stream\n\t * Default implementation for DDS, override if different behavior is required.\n\t */\n\tprotected onConnect(): void {}\n\n\t/**\n\t * Called when a message has to be resubmitted. This typically happens after a reconnection for unacked messages.\n\t * The default implementation here is to resubmit the same message. The client can override if different behavior\n\t * is required. It can choose to resubmit the same message, submit different / multiple messages or not submit\n\t * anything at all.\n\t * @param content - The content of the original message.\n\t * @param localOpMetadata - The local metadata associated with the original message.\n\t */\n\tprotected reSubmitCore(content: unknown, localOpMetadata: unknown): void {\n\t\tthis.submitLocalMessage(content, localOpMetadata);\n\t}\n\n\t/**\n\t * Called when a message has to be resubmitted but its content should be \"squashed\" if any subsequent pending changes\n\t * override the content in the fashion described on {@link @fluidframework/datastore-definitions#IDeltaHandler.reSubmit}.\n\t *\n\t * @param content - The content of the original message.\n\t * @param localOpMetadata - The local metadata associated with the original message.\n\t */\n\tprotected reSubmitSquashed(content: unknown, localOpMetadata: unknown): void {\n\t\tconst allowStagingModeWithoutSquashing =\n\t\t\tloggerToMonitoringContext(this.logger).config.getBoolean(\n\t\t\t\t\"Fluid.SharedObject.AllowStagingModeWithoutSquashing\",\n\t\t\t) ??\n\t\t\t(this.runtime.options.allowStagingModeWithoutSquashing as boolean | undefined) ??\n\t\t\ttrue;\n\t\tif (allowStagingModeWithoutSquashing) {\n\t\t\tthis.reSubmitCore(content, localOpMetadata);\n\t\t} else {\n\t\t\tthis.throwUnsupported(\"reSubmitSquashed\");\n\t\t}\n\t}\n\n\t/**\n\t * Promises that are waiting for an ack from the server before resolving should use this instead of new Promise.\n\t * It ensures that if something changes that will interrupt that ack (e.g. the FluidDataStoreRuntime disposes),\n\t * the Promise will reject.\n\t * If runtime is disposed when this call is made, executor is not run and promise is rejected right away.\n\t */\n\tprotected async newAckBasedPromise<T>(\n\t\texecutor: (\n\t\t\tresolve: (value: T | PromiseLike<T>) => void,\n\t\t\treject: (reason?: unknown) => void,\n\t\t) => void,\n\t): Promise<T> {\n\t\tlet rejectBecauseDispose: () => void;\n\t\treturn new Promise<T>((resolve, reject) => {\n\t\t\trejectBecauseDispose = () =>\n\t\t\t\treject(\n\t\t\t\t\tnew Error(\"FluidDataStoreRuntime disposed while this ack-based Promise was pending\"),\n\t\t\t\t);\n\n\t\t\tif (this.runtime.disposed) {\n\t\t\t\trejectBecauseDispose();\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tthis.runtime.on(\"dispose\", rejectBecauseDispose);\n\t\t\texecutor(resolve, reject);\n\t\t}).finally(() => {\n\t\t\t// Note: rejectBecauseDispose will never be undefined here\n\t\t\tthis.runtime.off(\"dispose\", rejectBecauseDispose);\n\t\t});\n\t}\n\n\tprivate attachDeltaHandler(): void {\n\t\t// Services should already be there in case we are attaching delta handler.\n\t\tassert(\n\t\t\tthis.services !== undefined,\n\t\t\t0x07a /* \"Services should be there to attach delta handler\" */,\n\t\t);\n\t\t// attachDeltaHandler is only called after services is assigned\n\t\tthis.services.deltaConnection.attach({\n\t\t\tprocessMessages: (messagesCollection: IRuntimeMessageCollection) => {\n\t\t\t\tthis.processMessages(messagesCollection);\n\t\t\t},\n\t\t\tsetConnectionState: (connected: boolean) => {\n\t\t\t\tthis.setConnectionState(connected);\n\t\t\t},\n\t\t\treSubmit: (content: unknown, localOpMetadata: unknown, squash: boolean) => {\n\t\t\t\tthis.reSubmit(content, localOpMetadata, squash);\n\t\t\t},\n\t\t\tapplyStashedOp: (content: unknown): void => {\n\t\t\t\tthis.applyStashedOp(parseHandles(content, this.serializer));\n\t\t\t},\n\t\t\trollback: (content: unknown, localOpMetadata: unknown) => {\n\t\t\t\tthis.rollback(content, localOpMetadata);\n\t\t\t},\n\t\t} satisfies IDeltaHandler);\n\t}\n\n\t/**\n\t * Set the state of connection to services.\n\t * @param connected - true if connected, false otherwise.\n\t */\n\tprivate setConnectionState(connected: boolean): void {\n\t\t// only an attached shared object can transition its\n\t\t// connected state. This is defensive, as some\n\t\t// of our test harnesses don't handle this correctly\n\t\tif (!this.isAttached() || this._connected === connected) {\n\t\t\t// Not changing state, nothing the same.\n\t\t\treturn;\n\t\t}\n\n\t\t// Should I change the state at the end? So that we *can't* send new stuff before we send old?\n\t\tthis._connected = connected;\n\n\t\tif (connected) {\n\t\t\t// Call this for now so that DDSes like ConsensusOrderedCollection that maintain their own pending\n\t\t\t// messages will work.\n\t\t\tthis.onConnect();\n\t\t} else {\n\t\t\t// Things that are true now...\n\t\t\t// - if we had a connection we can no longer send messages over it\n\t\t\t// - if we had outbound messages some may or may not be ACK'd. Won't know until next message\n\t\t\t//\n\t\t\t// - nack could get a new msn - but might as well do it in the join?\n\t\t\tthis.onDisconnect();\n\t\t}\n\t}\n\n\t/* eslint-disable jsdoc/check-indentation */\n\t/**\n\t * Process a bunch of messages for this shared object. A bunch is group of messages that have the following properties:\n\t * - They are all part of the same grouped batch, which entails:\n\t *   - They are contiguous in sequencing order.\n\t *   - They are all from the same client.\n\t *   - They are all based on the same reference sequence number.\n\t *   - They are not interleaved with messages from other clients.\n\t * - They are not interleaved with messages from other DDS in the container.\n\t * @param messageCollection - The collection of messages to process.\n\t *\n\t */\n\t/* eslint-enable jsdoc/check-indentation */\n\tprivate processMessages(messagesCollection: IRuntimeMessageCollection): void {\n\t\tthis.verifyNotClosed(); // This will result in container closure.\n\n\t\tconst { envelope, local, messagesContent } = messagesCollection;\n\n\t\t// Decode any handles in the contents before processing the messages.\n\t\tconst decodedMessagesContent: IRuntimeMessagesContent[] = [];\n\t\tfor (const { contents, localOpMetadata, clientSequenceNumber } of messagesContent) {\n\t\t\tconst decodedMessageContent: IRuntimeMessagesContent = {\n\t\t\t\tcontents: parseHandles(contents, this.serializer),\n\t\t\t\tlocalOpMetadata,\n\t\t\t\tclientSequenceNumber,\n\t\t\t};\n\t\t\tdecodedMessagesContent.push(decodedMessageContent);\n\t\t}\n\n\t\tconst emitEvents = (event: \"pre-op\" | \"op\"): void => {\n\t\t\tfor (const { contents, clientSequenceNumber } of decodedMessagesContent) {\n\t\t\t\tconst message: ISequencedDocumentMessage = {\n\t\t\t\t\t...envelope,\n\t\t\t\t\tcontents,\n\t\t\t\t\tclientSequenceNumber,\n\t\t\t\t};\n\t\t\t\tthis.emitInternal(event, message, local);\n\t\t\t}\n\t\t};\n\n\t\temitEvents(\"pre-op\");\n\t\tthis.opProcessingHelper.measure(\n\t\t\t(): ICustomData<ProcessTelemetryProperties> => {\n\t\t\t\tconst decodedMessagesCollection: IRuntimeMessageCollection = {\n\t\t\t\t\tenvelope,\n\t\t\t\t\tlocal,\n\t\t\t\t\tmessagesContent: decodedMessagesContent,\n\t\t\t\t};\n\t\t\t\tthis.processMessagesCore(decodedMessagesCollection);\n\t\t\t\tconst telemetryProperties: ProcessTelemetryProperties = {\n\t\t\t\t\tsequenceDifference: envelope.sequenceNumber - envelope.referenceSequenceNumber,\n\t\t\t\t};\n\t\t\t\treturn {\n\t\t\t\t\tcustomData: telemetryProperties,\n\t\t\t\t};\n\t\t\t},\n\t\t\tlocal ? \"local\" : \"remote\",\n\t\t);\n\t\temitEvents(\"op\");\n\t}\n\n\t/**\n\t * Called when a message has to be resubmitted. This typically happens for unacked messages after a\n\t * reconnection.\n\t * @param content - The content of the original message.\n\t * @param localOpMetadata - The local metadata associated with the original message.\n\t * @param squash - If `true`, the message will be resubmitted in a squashed form. If `false`,\n\t * the legacy behavior (no squashing) will be used.\n\t */\n\tprivate reSubmit(content: unknown, localOpMetadata: unknown, squash: boolean): void {\n\t\tif (squash) {\n\t\t\tthis.reSubmitSquashed(content, localOpMetadata);\n\t\t} else {\n\t\t\tthis.reSubmitCore(content, localOpMetadata);\n\t\t}\n\t}\n\n\t/**\n\t * Revert an op\n\t */\n\tprotected rollback(content: unknown, localOpMetadata: unknown): void {\n\t\tthis.throwUnsupported(\"rollback\");\n\t}\n\n\t/**\n\t * Apply changes from the provided op content just as if a local client has made the change,\n\t * including submitting the op. Used when rehydrating an attached container\n\t * with pending changes. The rehydration process replays all remote ops\n\t * and applies stashed ops after the remote op with a sequence number\n\t * that matches that of the stashed op is applied. This ensures\n\t * stashed ops are applied at the same state they were originally created.\n\t *\n\t * It is possible that stashed ops have been sent in the past, and will be found when\n\t * the shared object catches up with remotes ops.\n\t * So this prepares the SharedObject for seeing potentially seeing the ACK.\n\t * If no matching remote op is found, all the applied stashed ops will go\n\t * through the normal resubmit flow upon reconnection, which allows the dds\n\t * to rebase them to the latest state, and then resubmit them.\n\t *\n\t * @param content - Contents of a stashed op.\n\t */\n\tprotected abstract applyStashedOp(content: unknown): void;\n\n\t/**\n\t * Emit an event. This function is only intended for use by DDS classes that extend SharedObject/SharedObjectCore,\n\t * specifically to emit events that are part of the public interface of the DDS (i.e. those that can have listeners\n\t * attached to them by the consumers of the DDS). It should not be called from outside the class or to emit events\n\t * which are only internal to the DDS. Support for calling it from outside the DDS instance might be removed in the\n\t * future.\n\t * @param event - The event to emit.\n\t * @param args - Arguments to pass to the event listeners.\n\t * @returns `true` if the event had listeners, `false` otherwise.\n\t */\n\tpublic emit(event: EventEmitterEventType, ...args: any[]): boolean {\n\t\treturn this.callbacksHelper.measure(() => {\n\t\t\t// eslint-disable-next-line @typescript-eslint/no-unsafe-argument\n\t\t\treturn super.emit(event, ...args);\n\t\t});\n\t}\n\n\t/**\n\t * Use to emit events inside {@link SharedObjectCore}, with no telemetry measurement\n\t * done on the duration of the callbacks. Simply calls `super.emit()`.\n\t * @param event - Event to emit\n\t * @param args - Arguments for the event\n\t * @returns Whatever `super.emit()` returns.\n\t */\n\tprivate emitInternal(event: EventEmitterEventType, ...args: unknown[]): boolean {\n\t\treturn super.emit(event, ...args);\n\t}\n\n\tprivate throwUnsupported(featureName: string): never {\n\t\tthrow new LoggingError(\"Unsupported DDS feature\", {\n\t\t\tfeatureName,\n\t\t\t...tagCodeArtifacts({ ddsType: this.attributes.type }),\n\t\t});\n\t}\n}\n\n/**\n * Helper for implementing {@link ISharedObject} with simplified, synchronous summarization and garbage collection.\n * @remarks\n * DDS implementations with async and incremental summarization should extend {@link SharedObjectCore} directly instead.\n * @privateRemarks\n * TODO:\n * This class is badly named.\n * Once it becomes `@internal` \"SharedObjectCore\" should probably become \"SharedObject\"\n * and this class should be renamed to something like \"SharedObjectSynchronous\".\n * @legacy @beta\n */\nexport abstract class SharedObject<\n\tTEvent extends ISharedObjectEvents = ISharedObjectEvents,\n> extends SharedObjectCore<TEvent> {\n\t/**\n\t * True while we are garbage collecting this object's data.\n\t */\n\tprivate _isGCing: boolean = false;\n\n\t/**\n\t * The serializer to use to serialize / parse handles, if any.\n\t */\n\tprivate readonly _serializer: IFluidSerializer;\n\n\tprotected get serializer(): IFluidSerializer {\n\t\t/**\n\t\t * During garbage collection, the GCHandleVisitor \"serializer\" keeps track of IFluidHandles that are serialized. These\n\t\t * handles represent references to other Fluid objects.\n\t\t *\n\t\t * This is fine for now. However, if we implement delay loading in DDSes, they may load and de-serialize content\n\t\t * in summarize. When that happens, they may incorrectly hit this assert and we will have to change this.\n\t\t */\n\t\tassert(\n\t\t\t!this._isGCing,\n\t\t\t0x075 /* \"SummarySerializer should be used for serializing data during summary.\" */,\n\t\t);\n\t\treturn this._serializer;\n\t}\n\n\tconstructor(\n\t\tid: string,\n\t\truntime: IFluidDataStoreRuntime,\n\t\tattributes: IChannelAttributes,\n\t\t/**\n\t\t * The prefix to use for telemetry events emitted by this object.\n\t\t */\n\t\tprivate readonly telemetryContextPrefix: string,\n\t) {\n\t\tsuper(id, runtime, attributes);\n\n\t\tthis._serializer = new FluidSerializer(this.runtime.channelsRoutingContext);\n\t}\n\n\t/**\n\t * {@inheritDoc @fluidframework/datastore-definitions#(IChannel:interface).getAttachSummary}\n\t */\n\tpublic getAttachSummary(\n\t\tfullTree: boolean = false,\n\t\ttrackState: boolean = false,\n\t\ttelemetryContext?: ITelemetryContext,\n\t): ISummaryTreeWithStats {\n\t\tconst result = this.summarizeCore(\n\t\t\tthis.serializer,\n\t\t\ttelemetryContext,\n\t\t\tundefined /* incrementalSummaryContext */,\n\t\t\tfullTree,\n\t\t);\n\t\tthis.incrementTelemetryMetric(\n\t\t\tblobCountPropertyName,\n\t\t\tresult.stats.blobNodeCount,\n\t\t\ttelemetryContext,\n\t\t);\n\t\tthis.incrementTelemetryMetric(\n\t\t\ttotalBlobSizePropertyName,\n\t\t\tresult.stats.totalBlobSize,\n\t\t\ttelemetryContext,\n\t\t);\n\t\treturn result;\n\t}\n\n\t/**\n\t * {@inheritDoc @fluidframework/datastore-definitions#(IChannel:interface).summarize}\n\t */\n\tpublic async summarize(\n\t\tfullTree: boolean = false,\n\t\ttrackState: boolean = false,\n\t\ttelemetryContext?: ITelemetryContext,\n\t\tincrementalSummaryContext?: IExperimentalIncrementalSummaryContext,\n\t): Promise<ISummaryTreeWithStats> {\n\t\tconst result = this.summarizeCore(\n\t\t\tthis.serializer,\n\t\t\ttelemetryContext,\n\t\t\tincrementalSummaryContext,\n\t\t\tfullTree,\n\t\t);\n\t\tthis.incrementTelemetryMetric(\n\t\t\tblobCountPropertyName,\n\t\t\tresult.stats.blobNodeCount,\n\t\t\ttelemetryContext,\n\t\t);\n\t\tthis.incrementTelemetryMetric(\n\t\t\ttotalBlobSizePropertyName,\n\t\t\tresult.stats.totalBlobSize,\n\t\t\ttelemetryContext,\n\t\t);\n\t\treturn result;\n\t}\n\n\t/**\n\t * {@inheritDoc @fluidframework/datastore-definitions#(IChannel:interface).getGCData}\n\t */\n\tpublic getGCData(fullGC: boolean = false): IGarbageCollectionData {\n\t\t// Set _isGCing to true. This flag is used to ensure that we only use GCHandleVisitor in this codepath and not when trying to truly serialize.\n\t\tassert(\n\t\t\t!this._isGCing,\n\t\t\t0x078 /* \"Possible re-entrancy! Summary should not already be in progress.\" */,\n\t\t);\n\t\tthis._isGCing = true;\n\n\t\tlet gcData: IGarbageCollectionData;\n\t\ttry {\n\t\t\tconst handleVisitor = new GCHandleVisitor(this.runtime.channelsRoutingContext);\n\t\t\tthis.processGCDataCore(handleVisitor);\n\t\t\t// The GC data for this shared object contains a single GC node. The outbound routes of this node are the\n\t\t\t// routes of handles serialized during summarization.\n\t\t\tgcData = { gcNodes: { \"/\": handleVisitor.getVisitedHandlePaths() } };\n\t\t\tassert(\n\t\t\t\tthis._isGCing,\n\t\t\t\t0x079 /* \"Possible re-entrancy! Summary should have been in progress.\" */,\n\t\t\t);\n\t\t} finally {\n\t\t\tthis._isGCing = false;\n\t\t}\n\n\t\treturn gcData;\n\t}\n\n\t/**\n\t * Calls the serializer over all data in this object that reference other GC nodes.\n\t * Derived classes must override this to provide custom list of references to other GC nodes.\n\t *\n\t * @remarks Serialization itself doesn't matter (the result is ignored). We're tapping into the serialization infrastructure\n\t * as a way to visit all the content in this content that may reference other objects via handle.\n\t *\n\t * @param serializer - The \"serializer\" (more like handle visitor) to use.\n\t * Implementations should ensure that serialize is called on all handles, as the way to visit them.\n\t */\n\tprotected processGCDataCore(serializer: IFluidSerializer): void {\n\t\t// We run the full summarize logic to get the list of outbound routes from this object. This is a little\n\t\t// expensive but its okay for now. It will be updated to not use full summarize and make it more efficient.\n\t\t// See: https://github.com/microsoft/FluidFramework/issues/4547\n\t\tthis.summarizeCore(serializer);\n\t}\n\n\t/**\n\t * Gets a form of the object that can be serialized.\n\t * @returns A tree representing the snapshot of the shared object.\n\t */\n\tprotected abstract summarizeCore(\n\t\tserializer: IFluidSerializer,\n\t\ttelemetryContext?: ITelemetryContext,\n\t\tincrementalSummaryContext?: IExperimentalIncrementalSummaryContext,\n\t\tfullTree?: boolean,\n\t): ISummaryTreeWithStats;\n\n\tprivate incrementTelemetryMetric(\n\t\tpropertyName: string,\n\t\tincrementBy: number,\n\t\ttelemetryContext?: ITelemetryContext,\n\t): void {\n\t\tif (telemetryContext !== undefined) {\n\t\t\t// TelemetryContext needs to implment a get function\n\t\t\tassert(\n\t\t\t\t\"get\" in telemetryContext && typeof telemetryContext.get === \"function\",\n\t\t\t\t0x97e /* received context must have a get function */,\n\t\t\t);\n\n\t\t\tconst prevTotal = ((telemetryContext as TelemetryContext).get(\n\t\t\t\tthis.telemetryContextPrefix,\n\t\t\t\tpropertyName,\n\t\t\t) ?? 0) as number;\n\t\t\ttelemetryContext.set(this.telemetryContextPrefix, propertyName, prevTotal + incrementBy);\n\t\t}\n\t}\n}\n\n/**\n * Defines a kind of shared object.\n * Used in containers to register a shared object implementation, and to create new instances of a given type of shared object.\n *\n * @remarks\n * For use internally and in the \"encapsulated API\".\n * See {@link SharedObjectKind} for the type erased version for use in the public declarative API.\n *\n * @privateRemarks\n * This does not extend {@link SharedObjectKind} since doing so would prevent implementing this interface in type safe code.\n * Any implementation of this can safely be used as a {@link SharedObjectKind} with an explicit type conversion,\n * but doing so is typically not needed as {@link createSharedObjectKind} is used to produce values that are both types simultaneously.\n * @legacy @beta\n */\nexport interface ISharedObjectKind<TSharedObject> {\n\t/**\n\t * Get a factory which can be used by the Fluid Framework to programmatically instantiate shared objects within containers.\n\t * @remarks\n\t * The produced factory is intended for use with the FluidDataStoreRegistry and is used by the Fluid Framework to instantiate already existing Channels.\n\t * To create new shared objects use:\n\t *\n\t * - {@link @fluidframework/fluid-static#IFluidContainer.create} if using `@fluidframework/fluid-static`, for example via `@fluidframework/azure-client`.\n\t *\n\t * - {@link ISharedObjectKind.create} if using a custom container definitions (and thus not using {@link @fluidframework/fluid-static#IFluidContainer}).\n\t */\n\tgetFactory(): IChannelFactory<TSharedObject>;\n\n\t/**\n\t * Create a shared object.\n\t * @param runtime - The data store runtime that the new shared object belongs to.\n\t * @param id - Optional name of the shared object.\n\t * @returns Newly created shared object.\n\t *\n\t * @example\n\t * To create a `SharedTree`, call the static create method:\n\t *\n\t * ```typescript\n\t * const myTree = SharedTree.create(this.runtime, id);\n\t * ```\n\t * @remarks\n\t * The created object is local (detached): insert a handle to it into an attached object to share (attach) it.\n\t * If using `@fluidframework/fluid-static` (for example via `@fluidframework/azure-client`), use {@link @fluidframework/fluid-static#IFluidContainer.create} instead of calling this directly.\n\t *\n\t * @privateRemarks\n\t * This can only be used with a `MockFluidDataStoreRuntime` when that mock is created with a `registry` containing a factory for this shared object.\n\t */\n\tcreate(runtime: IFluidDataStoreRuntime, id?: string): TSharedObject;\n}\n\n/**\n * Defines a kind of shared object.\n * @remarks\n * Used in containers to register a shared object implementation, and to create new instances of a given type of shared object.\n * See {@link @fluidframework/fluid-static#IFluidContainer.create} and {@link @fluidframework/fluid-static#ContainerSchema} for details.\n * @privateRemarks\n * Part of the \"declarative API\".\n * Type erased reference to an {@link ISharedObjectKind} or a DataObject class in for use in\n * `fluid-static`'s `IFluidContainer` and `ContainerSchema`.\n * Use {@link createSharedObjectKind} to creating an instance of this type.\n * @sealed\n * @public\n */\nexport interface SharedObjectKind<out TSharedObject = unknown>\n\textends ErasedType<readonly [\"SharedObjectKind\", TSharedObject]> {\n\t/**\n\t * Check whether an {@link @fluidframework/core-interfaces#IFluidLoadable} is an instance of this shared object kind.\n\t * @remarks This should be used in place of `instanceof` checks for shared objects, as their actual classes are not exported in Fluid's public API.\n\t */\n\tis(value: IFluidLoadable): value is IFluidLoadable & TSharedObject;\n}\n\n/**\n * Utility for creating ISharedObjectKind instances.\n * @remarks\n * This takes in a class which implements IChannelFactory,\n * and uses it to return a a single value which is intended to be used as the API entry point for the corresponding shared object type.\n * The returned value implements {@link ISharedObjectKind} for use in the encapsulated API, as well as the type erased {@link SharedObjectKind} used by the declarative API.\n * See {@link @fluidframework/fluid-static#ContainerSchema} for how this is used in the declarative API.\n * @internal\n */\nexport function createSharedObjectKind<TSharedObject>(\n\tfactory: (new () => IChannelFactory<TSharedObject>) & { readonly Type: string },\n): ISharedObjectKind<TSharedObject> & SharedObjectKind<TSharedObject> {\n\tconst result: ISharedObjectKind<TSharedObject> &\n\t\tOmit<SharedObjectKind<TSharedObject>, \"brand\"> = {\n\t\tgetFactory(): IChannelFactory<TSharedObject> {\n\t\t\treturn new factory();\n\t\t},\n\n\t\tcreate(runtime: IFluidDataStoreRuntime, id?: string): TSharedObject {\n\t\t\treturn runtime.createChannel(id, factory.Type) as TSharedObject;\n\t\t},\n\n\t\tis(value: IFluidLoadable): value is IFluidLoadable & TSharedObject {\n\t\t\treturn isChannel(value) && value.attributes.type === factory.Type;\n\t\t},\n\t};\n\n\treturn result as typeof result & SharedObjectKind<TSharedObject>;\n}\n\nfunction isChannel(loadable: IFluidLoadable): loadable is IChannel {\n\t// This assumes no other IFluidLoadable has an `attributes` field, and thus may not be fully robust.\n\treturn (loadable as IChannel).attributes !== undefined;\n}\n"]}

package.json

 {
   "name": "@fluidframework/shared-object-base",
-  "version": "2.90.0",
+  "version": "2.91.0",
   "description": "Fluid base class for shared distributed data structures",
@@ -72,13 +72,13 @@ "homepage": "https://fluidframework.com",
   "dependencies": {
-    "@fluid-internal/client-utils": "~2.90.0",
-    "@fluidframework/container-definitions": "~2.90.0",
-    "@fluidframework/core-interfaces": "~2.90.0",
-    "@fluidframework/core-utils": "~2.90.0",
-    "@fluidframework/datastore": "~2.90.0",
-    "@fluidframework/datastore-definitions": "~2.90.0",
-    "@fluidframework/driver-definitions": "~2.90.0",
-    "@fluidframework/id-compressor": "~2.90.0",
-    "@fluidframework/runtime-definitions": "~2.90.0",
-    "@fluidframework/runtime-utils": "~2.90.0",
-    "@fluidframework/telemetry-utils": "~2.90.0",
+    "@fluid-internal/client-utils": "~2.91.0",
+    "@fluidframework/container-definitions": "~2.91.0",
+    "@fluidframework/core-interfaces": "~2.91.0",
+    "@fluidframework/core-utils": "~2.91.0",
+    "@fluidframework/datastore": "~2.91.0",
+    "@fluidframework/datastore-definitions": "~2.91.0",
+    "@fluidframework/driver-definitions": "~2.91.0",
+    "@fluidframework/id-compressor": "~2.91.0",
+    "@fluidframework/runtime-definitions": "~2.91.0",
+    "@fluidframework/runtime-utils": "~2.91.0",
+    "@fluidframework/telemetry-utils": "~2.91.0",
     "uuid": "^11.1.0"
@@ -88,11 +88,11 @@ },
     "@arethetypeswrong/cli": "^0.18.2",
-    "@biomejs/biome": "~1.9.3",
-    "@fluid-internal/mocha-test-setup": "~2.90.0",
-    "@fluid-private/test-pairwise-generator": "~2.90.0",
+    "@biomejs/biome": "~2.4.5",
+    "@fluid-internal/mocha-test-setup": "~2.91.0",
+    "@fluid-private/test-pairwise-generator": "~2.91.0",
     "@fluid-tools/build-cli": "^0.63.0",
     "@fluidframework/build-common": "^2.0.3",
     "@fluidframework/build-tools": "^0.63.0",
-    "@fluidframework/eslint-config-fluid": "~2.90.0",
+    "@fluidframework/eslint-config-fluid": "~2.91.0",
     "@fluidframework/shared-object-base-previous": "npm:@fluidframework/shared-object-base@2.83.0",
-    "@fluidframework/test-runtime-utils": "~2.90.0",
+    "@fluidframework/test-runtime-utils": "~2.91.0",
     "@microsoft/api-extractor": "7.52.11",
@@ -99,0 +99,0 @@ "@types/benchmark": "^2.1.0",

src/packageVersion.ts

@@ -9,2 +9,2 @@ /*!
 export const pkgName = "@fluidframework/shared-object-base";
-export const pkgVersion = "2.90.0";
+export const pkgVersion = "2.91.0";

src/sharedObject.ts

@@ -399,18 +399,15 @@ /*!
 
-	/* eslint-disable jsdoc/check-indentation */
 	/**
-	 * Derived classes must override this to do custom processing on a 'bunch' of remote messages.
+	 * Apply a 'bunch' of sequenced ops to this shared object.
 	 * @remarks
-	 * A 'bunch' is a group of messages that have the following properties:
-	 * - They are all part of the same grouped batch, which entails:
-	 *   - They are contiguous in sequencing order.
-	 *   - They are all from the same client.
-	 *   - They are all based on the same reference sequence number.
-	 *   - They are not interleaved with messages from other clients.
-	 * - They are not interleaved with messages from other DDS in the container.
-	 * Derived classes should override this if they need to do custom processing on a 'bunch' of remote messages.
-	 * @param messageCollection - The collection of messages to process.
+	 * See {@link @fluidframework/runtime-definitions#IRuntimeMessageCollection} for what a "bunch" is.
 	 *
+	 * These ops have been sequenced by the service and now have a finalized ordering.
+	 * They may be local or remote ops, but they cannot be ops that are still pending acknowledgement from the service.
+	 *
+	 * @param messageCollection - The 'bunch' of sequenced ops to apply to this shared object.
+	 * @privateRemarks
+	 * TODO:Performance: AB#59783: Allowing this to process more messages at once (more than the current definition of 'bunch') could improve performance of clients which fall behind,
+	 * which is one of the most important performance sensitive scenarios.
 	 */
-	/* eslint-enable jsdoc/check-indentation */
 	protected abstract processMessagesCore(messagesCollection: IRuntimeMessageCollection): void;
@@ -421,3 +418,2 @@
 	 */
-
 	protected abstract onDisconnect(): void;
@@ -424,0 +420,0 @@

New alerts

Long strings

Supply chain risk

Contains long string literals, which may be a sign of obfuscated or packed code.

Found 1 instance in 1 package

Fixed alerts

Long strings

Supply chain risk

Contains long string literals, which may be a sign of obfuscated or packed code.

Found 1 instance in 1 package

Worsened metrics

Total package byte prevSize

597351

-0.03%

Lines of code

6696

-0.07%

Dependency changes

• + Added

  @fluid-internal/client-utils@2.91.0
  (transitive)

• + Added

  @fluidframework/container-definitions@2.91.0
  (transitive)

• + Added

  @fluidframework/container-runtime-definitions@2.91.0
  (transitive)

• + Added

  @fluidframework/core-interfaces@2.91.0
  (transitive)

• + Added

  @fluidframework/core-utils@2.91.0
  (transitive)

• + Added

  @fluidframework/datastore@2.91.0
  (transitive)

• + Added

  @fluidframework/datastore-definitions@2.91.0
  (transitive)

• + Added

  @fluidframework/driver-definitions@2.91.0
  (transitive)

• + Added

  @fluidframework/driver-utils@2.91.0
  (transitive)

• + Added

  @fluidframework/id-compressor@2.91.0
  (transitive)

• + Added

  @fluidframework/runtime-definitions@2.91.0
  (transitive)

• + Added

  @fluidframework/runtime-utils@2.91.0
  (transitive)

• + Added

  @fluidframework/telemetry-utils@2.91.0
  (transitive)

• - Removed

  @fluid-internal/client-utils@2.90.0
  (transitive)

• - Removed

  @fluidframework/container-definitions@2.90.0
  (transitive)

• - Removed

  @fluidframework/container-runtime-definitions@2.90.0
  (transitive)

• - Removed

  @fluidframework/core-interfaces@2.90.0
  (transitive)

• - Removed

  @fluidframework/core-utils@2.90.0
  (transitive)

• - Removed

  @fluidframework/datastore@2.90.0
  (transitive)

• - Removed

  @fluidframework/datastore-definitions@2.90.0
  (transitive)

• - Removed

  @fluidframework/driver-definitions@2.90.0
  (transitive)

• - Removed

  @fluidframework/driver-utils@2.90.0
  (transitive)

• - Removed

  @fluidframework/id-compressor@2.90.0
  (transitive)

• - Removed

  @fluidframework/runtime-definitions@2.90.0
  (transitive)

• - Removed

  @fluidframework/runtime-utils@2.90.0
  (transitive)

• - Removed

  @fluidframework/telemetry-utils@2.90.0
  (transitive)

• Updated

  @fluid-internal/client-utils@~2.91.0

• Updated

  @fluidframework/container-definitions@~2.91.0

• Updated

  @fluidframework/core-interfaces@~2.91.0

• Updated

  @fluidframework/core-utils@~2.91.0

• Updated

  @fluidframework/datastore@~2.91.0

• Updated

  @fluidframework/datastore-definitions@~2.91.0

• Updated

  @fluidframework/driver-definitions@~2.91.0

• Updated

  @fluidframework/id-compressor@~2.91.0

• Updated

  @fluidframework/runtime-definitions@~2.91.0

• Updated

  @fluidframework/runtime-utils@~2.91.0

• Updated

  @fluidframework/telemetry-utils@~2.91.0