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class BufferedTransactionByIdReader[API_RESPONSE] extends AnyRef

Generic class that helps serving Ledger API point-wise lookups (TransactionService.{GetTransactionByEventId, GetTransactionById, GetFlatTransactionByEventId, GetFlatTransactionById}) from either the in-memory fan-out buffer or from persistence.

API_RESPONSE

The Ledger API response type.

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Instance Constructors

  1. new BufferedTransactionByIdReader(inMemoryFanoutBuffer: InMemoryFanoutBuffer, fetchFromPersistence: FetchTransactionByIdFromPersistence[API_RESPONSE], toApiResponse: ToApiResponse[API_RESPONSE])

    inMemoryFanoutBuffer

    The in-memory fan-out buffer.

    fetchFromPersistence

    Fetch a transaction by id from persistence.

    toApiResponse

    Convert a com.digitalasset.canton.platform.store.interfaces.TransactionLogUpdate.TransactionAccepted to a specific API response while also filtering for visibility.

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  8. def fetch(transactionId: String, requestingParties: Set[daml.lf.data.Ref.Party])(implicit loggingContext: LoggingContextWithTrace): Future[Option[API_RESPONSE]]

    Serves processed and filtered transaction from the buffer by transaction id, with fallback to a persistence fetch if the transaction is not anymore in the buffer (i.e.

    Serves processed and filtered transaction from the buffer by transaction id, with fallback to a persistence fetch if the transaction is not anymore in the buffer (i.e. it was evicted)

    transactionId

    The transaction id.

    requestingParties

    Parties requesting the transaction lookup

    loggingContext

    The logging context

    returns

    A future wrapping the API response if found.

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    Deprecated

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