net.corda.core.flows

Class NotaryFlow.Client

FlowLogic

net.corda.core.flows.NotaryFlow.Client

Enclosing class:

NotaryFlow

public static class NotaryFlow.Client
extends FlowLogic

A flow to be used by a party for obtaining signature(s) from a class NotaryService ascertaining the transaction time-window is correct and none of its inputs have been used in another completed transaction.

In case of a single-node or Raft notary, the flow will return a single signature. For the BFT notary multiple signatures will be returned – one from each replica that accepted the input state commit.

See Also:

class NotaryService

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	Client.Companion

Field Summary

Fields

Modifier and Type	Field and Description
static Client.Companion	Companion

Constructor Summary

Constructors

Constructor and Description
Client(SignedTransaction stx, ProgressTracker progressTracker) A flow to be used by a party for obtaining signature(s) from a class NotaryService ascertaining the transaction time-window is correct and none of its inputs have been used in another completed transaction.
Client(SignedTransaction stx)

Method Summary

Modifier and Type	Method and Description
java.util.List<net.corda.core.crypto.TransactionSignature>	call() This is where you fill out your business logic.
ProgressTracker	getProgressTracker() Override this to provide a class ProgressTracker. If one is provided and stepped, the framework will do something helpful with the progress reports e.g record to the audit service. If this flow is invoked as a subflow of another, then the tracker will be made a child of the current step in the parent. If it's null, this flow doesn't track progress.

Methods inherited from class net.corda.core.flows.FlowLogic

call, checkFlowPermission, flowStackSnapshot, getCurrentTopLevel, getFlowInfo, getLogger, getOurIdentity, getOurIdentityAndCert, getProgressTracker, getRunId, getServiceHub, initiateFlow, persistFlowStackSnapshot, receive, recordAuditEvent, send, sendAndReceive, sleep, subFlow, track, waitForLedgerCommit

Field Detail

Companion

public static Client.Companion Companion

Constructor Detail

Client

public Client(SignedTransaction stx,
              ProgressTracker progressTracker)

A flow to be used by a party for obtaining signature(s) from a class NotaryService ascertaining the transaction time-window is correct and none of its inputs have been used in another completed transaction.

In case of a single-node or Raft notary, the flow will return a single signature. For the BFT notary multiple signatures will be returned – one from each replica that accepted the input state commit.

Parameters:

progressTracker -

Override this to provide a class ProgressTracker. If one is provided and stepped, the framework will do something helpful with the progress reports e.g record to the audit service. If this flow is invoked as a subflow of another, then the tracker will be made a child of the current step in the parent. If it's null, this flow doesn't track progress.

Note that this has to return a tracker before the flow is invoked. You can't change your mind half way through.

Throws:

- in case the any of the inputs to the transaction have been consumed by another transaction or the time-window is invalid.

See Also:

class NotaryService

Client

public Client(SignedTransaction stx)

Method Detail

call

public java.util.List<net.corda.core.crypto.TransactionSignature> call()

This is where you fill out your business logic.

getProgressTracker

public ProgressTracker getProgressTracker()

Override this to provide a class ProgressTracker. If one is provided and stepped, the framework will do something helpful with the progress reports e.g record to the audit service. If this flow is invoked as a subflow of another, then the tracker will be made a child of the current step in the parent. If it's null, this flow doesn't track progress.

Note that this has to return a tracker before the flow is invoked. You can't change your mind half way through.

See Also:

class ProgressTracker