Class AsyncTransaction<T>Abstract

Transaction that implements synchronous operations with a cache Implementors: You must update the cache and wait for store.asyncDone in your asynchronous methods.

Todo

Make sure we handle abortions correctly, especially since the cache is shared between transactions.

Type Parameters

Hierarchy (View Summary)

Constructors

constructor

Properties

asyncDone store

Methods

_cached async get getSync keys remove removeSync set setSync

Constructors

constructor

Properties

ProtectedasyncDone

asyncDone: Promise<unknown> = ...

Readonlystore

store: T

Methods

_cached

  • _cached(id: number, info?: { size: number }): undefined | Resource<number>
    Internal

    Gets a cache resource If info is set and the resource doesn't exist, it will be created

    Parameters

    • id: number
    • Optionalinfo: { size: number }

    Returns undefined | Resource<number>

Protectedasync

  • async(promise: Promise<unknown>): void
    Internal

    Run a asynchronous operation from a sync context. Not magic and subject to (race) conditions.

    Parameters

    • promise: Promise<unknown>

    Returns void

Abstractget

  • get(
        id: number,
        offset: number,
        end?: number,
    ): Promise<undefined | Uint8Array<ArrayBufferLike>>

    Retrieves data.

    Parameters

    • id: number

      The key to look under for data.

    • offset: number
    • Optionalend: number

    Returns Promise<undefined | Uint8Array<ArrayBufferLike>>

getSync

  • getSync(
        id: number,
        offset: number,
        end?: number,
    ): undefined | Uint8Array<ArrayBufferLike>

    Retrieves data. Throws an error if an error occurs or if the key does not exist.

    Parameters

    • id: number

      The key to look under for data.

    • offset: number
    • Optionalend: number

    Returns undefined | Uint8Array<ArrayBufferLike>

    The data stored under the key, or undefined if not present.

Abstractkeys

Abstractremove

removeSync

Abstractset

  • set(id: number, data: Uint8Array, offset: number): Promise<void>

    Adds the data to the store under an id. Overwrites any existing data.

    Parameters

    • id: number

      The key to add the data under.

    • data: Uint8Array

      The data to add to the store.

    • offset: number

    Returns Promise<void>

setSync

  • setSync(id: number, data: Uint8Array, offset: number): void

    Adds the data to the store under and id.

    Parameters

    • id: number

      The key to add the data under.

    • data: Uint8Array

      The data to add to the store.

    • offset: number

    Returns void

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