Class BlockhashSubscriber

Hierarchy

  • BlockhashSubscriber

Constructors

constructor

Properties

blockhashes commitment connection isSubscribed latestBlockHeight latestBlockHeightContext updateBlockhashIntervalId updateIntervalMs

Methods

getBlockhashCacheSize getLatestBlockHeight getLatestBlockHeightContext getLatestBlockhash pruneBlockhashes subscribe unsubscribe updateBlockhash

Constructors

constructor

Properties

Private blockhashes

blockhashes: Readonly<{
    blockhash: string;
    lastValidBlockHeight: number;
}>[] = []

Private commitment

commitment: Commitment

Private connection

connection: Connection

Private isSubscribed

isSubscribed: boolean = false

Private latestBlockHeight

latestBlockHeight: number

Private latestBlockHeightContext

latestBlockHeightContext: Context

Private updateBlockhashIntervalId

updateBlockhashIntervalId: Timeout

Private updateIntervalMs

updateIntervalMs: number

Methods

getBlockhashCacheSize

getLatestBlockHeight

getLatestBlockHeightContext

getLatestBlockhash

  • Returns the latest cached blockhash, based on an offset from the latest obtained

    Returns

    Cached blockhash at the given offset, or undefined

    Parameters

    • offset: number = 0

      Offset to use, defaulting to 0

    • offsetType: "index" | "seconds" = 'index'

      If 'seconds', it will use calculate the actual element offset based on the update interval; otherwise it will return a fixed index

    Returns Readonly<{
        blockhash: string;
        lastValidBlockHeight: number;
    }>

pruneBlockhashes

subscribe

unsubscribe

updateBlockhash

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