@fluidframework/runtime-utils Package

Classes

Class	Alerts	Description
FluidHandleBase	Legacy	Base class which can be uses to assist implementing IFluidHandleInternal.
RequestParser	Legacy	The Request Parser takes an IRequest provides parsing and sub request creation
RuntimeFactoryHelper	Legacy
SummaryTreeBuilder	Legacy	A helper class for building summary trees.

Functions

Function	Alerts	Return Type	Description
compareFluidHandles(a, b)		boolean	Compare two IFluidHandles.
convertToSummaryTreeWithStats(snapshot, fullTree)	Legacy	ISummaryTreeWithStats	Converts snapshot ITree to ISummaryTree format and tracks stats.
create404Response(request)	Legacy	IResponse	Creates a 404 "not found" response for the given request
isFluidHandle(value)		value is IFluidHandle	Check if a value is an @fluidframework/core-interfaces#IFluidHandle.
isFluidHandlePayloadPending(handle)	Legacy	handle is IFluidHandlePayloadPending<T>	Check if the handle is an IFluidHandlePayloadPending.
isLocalFluidHandle(handle)	Legacy	handle is ILocalFluidHandle<T>	Check if the handle is an ILocalFluidHandle.
lookupTemporaryBlobStorageId(containerRuntime, handle)	Legacy	string | undefined	Lookup the blob storage ID for a blob handle.
toDeltaManagerInternal(deltaManager)	Legacy	IDeltaManager<ISequencedDocumentMessage, IDocumentMessage>	Casts the public API for delta manager into the internal one, exposing access to APIs needed by the implementation of Fluid Framework but not its users.
toFluidHandleErased(handle)	Legacy	IFluidHandleErased<T>	Type erase IFluidHandleInternal for use with fluidHandleSymbol.
toFluidHandleInternal(handle)	Legacy	IFluidHandleInternal<T>	Downcast an IFluidHandle to an IFluidHandleInternal.

Function Details

compareFluidHandles

Compare two IFluidHandles.

Signature

export declare function compareFluidHandles(a: IFluidHandle, b: IFluidHandle): boolean;

Remarks

Returns true iff both handles have the same internal absolutePath.

Parameters

Parameter	Type	Description
a	IFluidHandle
b	IFluidHandle

Returns

Return type: boolean

convertToSummaryTreeWithStats

Converts snapshot ITree to ISummaryTree format and tracks stats.

This API is provided for existing users, but is not recommended for new users.

To use, import via @fluidframework/runtime-utils/legacy.

For more information about our API support guarantees, see here.

Signature

export declare function convertToSummaryTreeWithStats(snapshot: ITree, fullTree?: boolean): ISummaryTreeWithStats;

Parameters

Parameter	Modifiers	Type	Description
snapshot		ITree	snapshot in ITree format
fullTree	optional	boolean	true to never use handles, even if id is specified

Returns

Return type: ISummaryTreeWithStats

create404Response

Creates a 404 "not found" response for the given request

This API is provided for existing users, but is not recommended for new users.

To use, import via @fluidframework/runtime-utils/legacy.

For more information about our API support guarantees, see here.

Signature

create404Response: (request: IRequest) => IResponse

Parameters

Parameter	Type	Description
request	IRequest	The request that resulted in the 404 response

Returns

An IResponse with 404 status code. \

Return type: IResponse

isFluidHandle

Check if a value is an @fluidframework/core-interfaces#IFluidHandle.

Signature

export declare function isFluidHandle(value: unknown): value is IFluidHandle;

Remarks

Objects which have a field named IFluidHandle can in some cases produce a false positive.

Parameters

Parameter	Type	Description
value	unknown

Returns

Return type: value is IFluidHandle

isFluidHandlePayloadPending

Check if the handle is an IFluidHandlePayloadPending. \

This API is provided for existing users, but is not recommended for new users.

To use, import via @fluidframework/runtime-utils/legacy.

For more information about our API support guarantees, see here.

Signature

isFluidHandlePayloadPending: <T>(handle: IFluidHandle<T>) => handle is IFluidHandlePayloadPending<T>

Type Parameters

Parameter	Description
T

Parameters

Parameter	Type	Description
handle	IFluidHandle<T>

Returns

Return type: handle is IFluidHandlePayloadPending<T>

isLocalFluidHandle

Check if the handle is an ILocalFluidHandle. \

This API is provided for existing users, but is not recommended for new users.

To use, import via @fluidframework/runtime-utils/legacy.

For more information about our API support guarantees, see here.

Signature

isLocalFluidHandle: <T>(handle: IFluidHandle<T>) => handle is ILocalFluidHandle<T>

Type Parameters

Parameter	Description
T

Parameters

Parameter	Type	Description
handle	IFluidHandle<T>

Returns

Return type: handle is ILocalFluidHandle<T>

lookupTemporaryBlobStorageId

Lookup the blob storage ID for a blob handle.

This API is provided for existing users, but is not recommended for new users.

To use, import via @fluidframework/runtime-utils/legacy.

For more information about our API support guarantees, see here.

Signature

export declare function lookupTemporaryBlobStorageId(containerRuntime: IContainerRuntime, handle: IFluidHandle): string | undefined;

Remarks

This is a legacy+alpha helper function that provides access to blob storage IDs. For blobs with pending payloads (localId exists but upload hasn't finished), this is expected to return undefined. Consumers should use the observability APIs on the handle (handle.payloadState, payloadShared event) to understand/wait for storage ID availability. Similarly, when the runtime is detached, this will return undefined as no blobs have been uploaded to storage.

Warning: the returned blob URL may expire and does not support permalinks. This API is intended for temporary integration scenarios only.

Parameters

Parameter	Type	Description
containerRuntime	IContainerRuntime	The container runtime instance
handle	IFluidHandle	The blob handle to lookup the storage ID for

Returns

The storage ID if found and the blob is not pending, undefined otherwise \

Return type: string | undefined

toDeltaManagerInternal

Casts the public API for delta manager into the internal one, exposing access to APIs needed by the implementation of Fluid Framework but not its users. \

This API is provided for existing users, but is not recommended for new users.

To use, import via @fluidframework/runtime-utils/legacy.

For more information about our API support guarantees, see here.

Signature

export declare function toDeltaManagerInternal(deltaManager: IDeltaManagerErased): IDeltaManager<ISequencedDocumentMessage, IDocumentMessage>;

Parameters

Parameter	Type	Description
deltaManager	IDeltaManagerErased

Returns

Return type: IDeltaManager<ISequencedDocumentMessage, IDocumentMessage>

toFluidHandleErased

Type erase IFluidHandleInternal for use with fluidHandleSymbol. \

This API is provided for existing users, but is not recommended for new users.

To use, import via @fluidframework/runtime-utils/legacy.

For more information about our API support guarantees, see here.

Signature

export declare function toFluidHandleErased<T>(handle: IFluidHandleInternal<T>): IFluidHandleErased<T>;

Type Parameters

Parameter	Description
T

Parameters

Parameter	Type	Description
handle	IFluidHandleInternal<T>

Returns

Return type: IFluidHandleErased<T>

toFluidHandleInternal

Downcast an IFluidHandle to an IFluidHandleInternal. \

This API is provided for existing users, but is not recommended for new users.

To use, import via @fluidframework/runtime-utils/legacy.

For more information about our API support guarantees, see here.

Signature

export declare function toFluidHandleInternal<T>(handle: IFluidHandle<T>): IFluidHandleInternal<T>;

Type Parameters

Parameter	Description
T

Parameters

Parameter	Type	Description
handle	IFluidHandle<T>

Returns

Return type: IFluidHandleInternal<T>