com.r3corda.protocols / FetchAttachmentsProtocol

FetchAttachmentsProtocol

class FetchAttachmentsProtocol : FetchDataProtocol<Attachment, ByteArray>

Given a set of hashes either loads from from local storage or requests them from the other peer. Downloaded attachments are saved to local storage automatically.



Constructors

<init> FetchAttachmentsProtocol(requests: Set<SecureHash>, otherSide: Party)

Given a set of hashes either loads from from local storage or requests them from the other peer. Downloaded attachments are saved to local storage automatically.

Properties

topic val topic: String

The topic to use when communicating with other parties. If more than one topic is required then use sub-protocols. Note that this is temporary until protocol sessions are properly implemented.

Inherited Properties

otherSide val otherSide: Party
requests val requests: Set<SecureHash>

Functions

convert fun convert(wire: ByteArray): Attachment
load fun load(txid: SecureHash): Attachment?
maybeWriteToDisk fun maybeWriteToDisk(downloaded: List<Attachment>): Unit

Inherited Functions

call open fun call(): Result<T>

This is where you fill out your business logic.

Companion Object Properties

TOPIC const val TOPIC: String