com.r3corda.protocols / ResolveTransactionsProtocol

ResolveTransactionsProtocol

class ResolveTransactionsProtocol : ProtocolLogic<Unit>

This protocol fetches each transaction identified by the given hashes from either disk or network, along with all their dependencies, and verifies them together using a single TransactionGroup. If no exception is thrown, then all the transactions have been successfully verified and inserted into the local database.

A couple of constructors are provided that accept a single transaction. When these are used, the dependencies of that transaction are resolved and then the transaction itself is verified. Again, if successful, the results are inserted into the database as long as a SignedTransaction was provided. If only the WireTransaction form was provided then this isnt enough to put into the local database, so only the dependencies are inserted. This way to use the protocol is helpful when resolving and verifying a finished but partially signed transaction.





Exceptions

ExcessivelyLargeTransactionGraph class ExcessivelyLargeTransactionGraph : Exception

Constructors

<init> ResolveTransactionsProtocol(stx: SignedTransaction, otherSide: SingleMessageRecipient)
ResolveTransactionsProtocol(wtx: WireTransaction, otherSide: SingleMessageRecipient)ResolveTransactionsProtocol(txHashes: Set<SecureHash>, otherSide: SingleMessageRecipient)

This protocol fetches each transaction identified by the given hashes from either disk or network, along with all their dependencies, and verifies them together using a single TransactionGroup. If no exception is thrown, then all the transactions have been successfully verified and inserted into the local database.

Inherited Properties

logger val logger: <ERROR CLASS>

This is where you should log things to.

progressTracker open val progressTracker: ProgressTracker?

Override this to provide a ProgressTracker. If one is provided and stepped, the framework will do something helpful with the progress reports. If this protocol is invoked as a sub-protocol of another, then the tracker will be made a child of the current step in the parent. If its null, this protocol doesnt track progress.

psm lateinit var psm: ProtocolStateMachine<*>

Reference to the Fiber instance that is the top level controller for the entire flow.

serviceHub val serviceHub: ServiceHub

Provides access to big, heavy classes that may be reconstructed from time to time, e.g. across restarts

Functions

call fun call(): Unit

This is where you fill out your business logic.

Inherited Functions

receive fun <T : Any> receive(topic: String, sessionIDForReceive: Long): UntrustworthyData<T>
fun <T : Any> receive(topic: String, sessionIDForReceive: Long, clazz: Class<T>): UntrustworthyData<T>
send fun send(topic: String, destination: MessageRecipients, sessionID: Long, obj: Any): Unit
sendAndReceive fun <T : Any> sendAndReceive(topic: String, destination: MessageRecipients, sessionIDForSend: Long, sessionIDForReceive: Long, obj: Any): UntrustworthyData<T>
subProtocol fun <R> subProtocol(subLogic: ProtocolLogic<R>): R

Invokes the given subprotocol by simply passing through this ProtocolLogics reference to the ProtocolStateMachine and then calling the call method.