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CORDA-2005: FinalityFlow has been made into an inlined flow to resolve issue with FinalityHandler (#4050)

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FinalityHandler is insecure in that it is open to receive any transaction from any party.

Any CorDapp targeting platform version 4 or above is required use the new c'tors which take in FlowSession objects to the counterpart flow. This flow must subcall ReceiveFinalityFlow to receive and record the finalised transaction.

Old CorDapps (with target platform version < 4) will continue to work as previously. However if there are no old CorDapps loaded then the node will disable FinalityHandler.
This commit is contained in:
Shams Asari 2018-11-14 14:16:22 +00:00 committed by GitHub
parent 8e6d4b4b38
commit e8b6f5f2f2
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2
.ci/api-current.txt
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@ -2304,7 +2304,7 @@ public final class net.corda.core.flows.ReceiveStateAndRefFlow extends net.corda
@NotNull @NotNull
public java.util.List<net.corda.core.contracts.StateAndRef<T>> call() public java.util.List<net.corda.core.contracts.StateAndRef<T>> call()
## ##
public final class net.corda.core.flows.ReceiveTransactionFlow extends net.corda.core.flows.FlowLogic public class net.corda.core.flows.ReceiveTransactionFlow extends net.corda.core.flows.FlowLogic
public <init>(net.corda.core.flows.FlowSession) public <init>(net.corda.core.flows.FlowSession)
public <init>(net.corda.core.flows.FlowSession, boolean) public <init>(net.corda.core.flows.FlowSession, boolean)
public <init>(net.corda.core.flows.FlowSession, boolean, net.corda.core.node.StatesToRecord) public <init>(net.corda.core.flows.FlowSession, boolean, net.corda.core.node.StatesToRecord)

3
confidential-identities/src/main/kotlin/net/corda/confidential/SwapIdentitiesFlow.kt
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@ -28,6 +28,9 @@ import java.util.*
*/ */
@StartableByRPC @StartableByRPC
@InitiatingFlow @InitiatingFlow
// TODO Make this non-initiating as otherwise any CorDapp using confidential identities will cause its node to have an
// open door where any counterparty will be able to swap identities at will. Instead SwapIdentitiesFlow and its counterpart,
// SwapIdentitiesHandler, should be in-lined and called by CorDapp specfic-flows.
class SwapIdentitiesFlow(private val otherParty: Party, class SwapIdentitiesFlow(private val otherParty: Party,
private val revocationEnabled: Boolean, private val revocationEnabled: Boolean,
override val progressTracker: ProgressTracker) : FlowLogic<LinkedHashMap<Party, AnonymousParty>>() { override val progressTracker: ProgressTracker) : FlowLogic<LinkedHashMap<Party, AnonymousParty>>() {

4
confidential-identities/src/test/kotlin/net/corda/confidential/IdentitySyncFlowTests.kt
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@ -18,8 +18,8 @@ import net.corda.testing.core.ALICE_NAME
import net.corda.testing.core.BOB_NAME import net.corda.testing.core.BOB_NAME
import net.corda.testing.core.CHARLIE_NAME import net.corda.testing.core.CHARLIE_NAME
import net.corda.testing.core.singleIdentity import net.corda.testing.core.singleIdentity
import net.corda.testing.node.internal.FINANCE_CORDAPP
import net.corda.testing.node.internal.InternalMockNetwork import net.corda.testing.node.internal.InternalMockNetwork
import net.corda.testing.node.internal.cordappsForPackages
import net.corda.testing.node.internal.startFlow import net.corda.testing.node.internal.startFlow
import org.junit.After import org.junit.After
import org.junit.Before import org.junit.Before
@ -35,7 +35,7 @@ class IdentitySyncFlowTests {
fun before() { fun before() {
// We run this in parallel threads to help catch any race conditions that may exist. // We run this in parallel threads to help catch any race conditions that may exist.
mockNet = InternalMockNetwork( mockNet = InternalMockNetwork(
cordappsForAllNodes = cordappsForPackages("net.corda.finance.contracts.asset", "net.corda.finance.schemas"), cordappsForAllNodes = listOf(FINANCE_CORDAPP),
networkSendManuallyPumped = false, networkSendManuallyPumped = false,
threadPerNode = true threadPerNode = true
) )

4
core/src/main/kotlin/net/corda/core/flows/CollectSignaturesFlow.kt
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@ -187,9 +187,9 @@ class CollectSignatureFlow(val partiallySignedTx: SignedTransaction, val session
* } * }
* *
* // Invoke the subFlow, in response to the counterparty calling [CollectSignaturesFlow]. * // Invoke the subFlow, in response to the counterparty calling [CollectSignaturesFlow].
* val stx = subFlow(flow) * val expectedTxId = subFlow(flow).id
* *
* return waitForLedgerCommit(stx.id) * return subFlow(ReceiveFinalityFlow(otherPartySession, expectedTxId))
* } * }
* } * }
* *

144
core/src/main/kotlin/net/corda/core/flows/FinalityFlow.kt
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@ -1,10 +1,14 @@
package net.corda.core.flows package net.corda.core.flows
import co.paralleluniverse.fibers.Suspendable import co.paralleluniverse.fibers.Suspendable
import net.corda.core.crypto.SecureHash
import net.corda.core.crypto.isFulfilledBy import net.corda.core.crypto.isFulfilledBy
import net.corda.core.identity.Party import net.corda.core.identity.Party
import net.corda.core.identity.groupAbstractPartyByWellKnownParty import net.corda.core.identity.groupAbstractPartyByWellKnownParty
import net.corda.core.internal.cordapp.CordappInfoResolver
import net.corda.core.internal.pushToLoggingContext import net.corda.core.internal.pushToLoggingContext
import net.corda.core.node.StatesToRecord
import net.corda.core.node.StatesToRecord.ONLY_RELEVANT
import net.corda.core.transactions.LedgerTransaction import net.corda.core.transactions.LedgerTransaction
import net.corda.core.transactions.SignedTransaction import net.corda.core.transactions.SignedTransaction
import net.corda.core.utilities.ProgressTracker import net.corda.core.utilities.ProgressTracker
@ -17,23 +21,53 @@ import net.corda.core.utilities.ProgressTracker
* The transaction is expected to have already been resolved: if its dependencies are not available in local * The transaction is expected to have already been resolved: if its dependencies are not available in local
* storage, verification will fail. It must have signatures from all necessary parties other than the notary. * storage, verification will fail. It must have signatures from all necessary parties other than the notary.
* *
* If specified, the extra recipients are sent the given transaction. The base set of parties to inform are calculated * A list of [FlowSession]s is required for each non-local participant of the transaction. These participants will receive
* from the contract-given set of participants. * the final notarised transaction by calling [ReceiveFinalityFlow] in their counterpart flows. Sessions with non-participants
* can also be included, but they must specifiy [StatesToRecord.ALL_VISIBLE] for statesToRecortd if they wish to record the
* contract states into their vaults.
* *
* The flow returns the same transaction but with the additional signatures from the notary. * The flow returns the same transaction but with the additional signatures from the notary.
* *
* NOTE: This is an inlined flow but for backwards compatibility is annotated with [InitiatingFlow].
*
* @param transaction What to commit. * @param transaction What to commit.
* @param extraRecipients A list of additional participants to inform of the transaction. * @param sessions A collection of [FlowSession]s who will be given the notarised transaction. This list **must** include
* all participants in the transaction (excluding the local identity).
*/ */
// To maintain backwards compatibility with the old API, FinalityFlow can act both as an intiating flow and as an inlined flow.
// This is only possible because a flow is only truly initiating when the first call to initiateFlow is made (where the
// presence of @InitiatingFlow is checked). So the new API is inlined simply because that code path doesn't call initiateFlow.
@InitiatingFlow @InitiatingFlow
class FinalityFlow(val transaction: SignedTransaction, class FinalityFlow private constructor(val transaction: SignedTransaction,
private val extraRecipients: Set<Party>, private val extraRecipients: Set<Party>,
override val progressTracker: ProgressTracker) : FlowLogic<SignedTransaction>() { override val progressTracker: ProgressTracker,
constructor(transaction: SignedTransaction, extraParticipants: Set<Party>) : this(transaction, extraParticipants, tracker()) private val sessions: Collection<FlowSession>?) : FlowLogic<SignedTransaction>() {
constructor(transaction: SignedTransaction) : this(transaction, emptySet(), tracker()) @Deprecated(DEPRECATION_MSG)
constructor(transaction: SignedTransaction, progressTracker: ProgressTracker) : this(transaction, emptySet(), progressTracker) constructor(transaction: SignedTransaction, extraRecipients: Set<Party>, progressTracker: ProgressTracker) : this(
transaction, extraRecipients, progressTracker, null
)
@Deprecated(DEPRECATION_MSG)
constructor(transaction: SignedTransaction, extraRecipients: Set<Party>) : this(transaction, extraRecipients, tracker(), null)
@Deprecated(DEPRECATION_MSG)
constructor(transaction: SignedTransaction) : this(transaction, emptySet(), tracker(), null)
@Deprecated(DEPRECATION_MSG)
constructor(transaction: SignedTransaction, progressTracker: ProgressTracker) : this(transaction, emptySet(), progressTracker, null)
constructor(transaction: SignedTransaction, sessions: Collection<FlowSession>, progressTracker: ProgressTracker) : this(
transaction, emptySet(), progressTracker, sessions
)
constructor(transaction: SignedTransaction, sessions: Collection<FlowSession>) : this(
transaction, emptySet(), tracker(), sessions
)
constructor(transaction: SignedTransaction, firstSession: FlowSession, vararg restSessions: FlowSession) : this(
transaction, emptySet(), tracker(), listOf(firstSession) + restSessions.asList()
)
companion object { companion object {
private const val DEPRECATION_MSG = "It is unsafe to use this constructor as it requires nodes to automatically " +
"accept notarised transactions without first checking their relevancy. Instead, use one of the constructors " +
"that takes in existing FlowSessions."
object NOTARISING : ProgressTracker.Step("Requesting signature by notary service") { object NOTARISING : ProgressTracker.Step("Requesting signature by notary service") {
override fun childProgressTracker() = NotaryFlow.Client.tracker() override fun childProgressTracker() = NotaryFlow.Client.tracker()
} }
@ -47,6 +81,19 @@ class FinalityFlow(val transaction: SignedTransaction,
@Suspendable @Suspendable
@Throws(NotaryException::class) @Throws(NotaryException::class)
override fun call(): SignedTransaction { override fun call(): SignedTransaction {
if (sessions == null) {
require(CordappInfoResolver.currentTargetVersion < 4) {
"A flow session for each external participant to the transaction must be provided. If you wish to continue " +
"using this insecure API then specify a target platform version of less than 4 for your CorDapp."
}
logger.warn("The current usage of FinalityFlow is unsafe. Please consider upgrading your CorDapp to use " +
"FinalityFlow with FlowSessions.")
} else {
require(sessions.none { serviceHub.myInfo.isLegalIdentity(it.counterparty) }) {
"Do not provide flow sessions for the local node. FinalityFlow will record the notarised transaction locally."
}
}
// Note: this method is carefully broken up to minimize the amount of data reachable from the stack at // Note: this method is carefully broken up to minimize the amount of data reachable from the stack at
// the point where subFlow is invoked, as that minimizes the checkpointing work to be done. // the point where subFlow is invoked, as that minimizes the checkpointing work to be done.
// //
@ -54,26 +101,49 @@ class FinalityFlow(val transaction: SignedTransaction,
// Then send to the notary if needed, record locally and distribute. // Then send to the notary if needed, record locally and distribute.
transaction.pushToLoggingContext() transaction.pushToLoggingContext()
val commandDataTypes = transaction.tx.commands.map { it.value }.mapNotNull { it::class.qualifiedName }.distinct() logCommandData()
logger.info("Started finalization, commands are ${commandDataTypes.joinToString(", ", "[", "]")}.") val externalParticipants = extractExternalParticipants(verifyTx())
val parties = getPartiesToSend(verifyTx())
if (sessions != null) {
val missingRecipients = externalParticipants - sessions.map { it.counterparty }
require(missingRecipients.isEmpty()) {
"Flow sessions were not provided for the following transaction participants: $missingRecipients"
}
}
val notarised = notariseAndRecord() val notarised = notariseAndRecord()
// Each transaction has its own set of recipients, but extra recipients get them all. // Each transaction has its own set of recipients, but extra recipients get them all.
progressTracker.currentStep = BROADCASTING progressTracker.currentStep = BROADCASTING
val recipients = parties.filterNot(serviceHub.myInfo::isLegalIdentity)
logger.info("Broadcasting transaction to parties ${recipients.map { it.name }.joinToString(", ", "[", "]")}.") if (sessions == null) {
for (party in recipients) { val recipients = externalParticipants + (extraRecipients - serviceHub.myInfo.legalIdentities)
logger.info("Sending transaction to party ${party.name}.") logger.info("Broadcasting transaction to parties ${recipients.joinToString(", ", "[", "]")}.")
val session = initiateFlow(party) for (recipient in recipients) {
subFlow(SendTransactionFlow(session, notarised)) logger.info("Sending transaction to party ${recipient.name}.")
logger.info("Party ${party.name} received the transaction.") val session = initiateFlow(recipient)
subFlow(SendTransactionFlow(session, notarised))
logger.info("Party $recipient received the transaction.")
}
} else {
for (session in sessions) {
subFlow(SendTransactionFlow(session, notarised))
logger.info("Party ${session.counterparty} received the transaction.")
}
} }
logger.info("All parties received the transaction successfully.") logger.info("All parties received the transaction successfully.")
return notarised return notarised
} }
private fun logCommandData() {
if (logger.isDebugEnabled) {
val commandDataTypes = transaction.tx.commands.asSequence().mapNotNull { it.value::class.qualifiedName }.distinct()
logger.debug("Started finalization, commands are ${commandDataTypes.joinToString(", ", "[", "]")}.")
}
}
@Suspendable @Suspendable
private fun notariseAndRecord(): SignedTransaction { private fun notariseAndRecord(): SignedTransaction {
val notarised = if (needsNotarySignature(transaction)) { val notarised = if (needsNotarySignature(transaction)) {
@ -98,13 +168,13 @@ class FinalityFlow(val transaction: SignedTransaction,
private fun hasNoNotarySignature(stx: SignedTransaction): Boolean { private fun hasNoNotarySignature(stx: SignedTransaction): Boolean {
val notaryKey = stx.tx.notary?.owningKey val notaryKey = stx.tx.notary?.owningKey
val signers = stx.sigs.map { it.by }.toSet() val signers = stx.sigs.asSequence().map { it.by }.toSet()
return notaryKey?.isFulfilledBy(signers) != true return notaryKey?.isFulfilledBy(signers) != true
} }
private fun getPartiesToSend(ltx: LedgerTransaction): Set<Party> { private fun extractExternalParticipants(ltx: LedgerTransaction): Set<Party> {
val participants = ltx.outputStates.flatMap { it.participants } + ltx.inputStates.flatMap { it.participants } val participants = ltx.outputStates.flatMap { it.participants } + ltx.inputStates.flatMap { it.participants }
return groupAbstractPartyByWellKnownParty(serviceHub, participants).keys + extraRecipients return groupAbstractPartyByWellKnownParty(serviceHub, participants).keys - serviceHub.myInfo.legalIdentities
} }
private fun verifyTx(): LedgerTransaction { private fun verifyTx(): LedgerTransaction {
@ -116,3 +186,33 @@ class FinalityFlow(val transaction: SignedTransaction,
return ltx return ltx
} }
} }
/**
* The receiving counterpart to [FinalityFlow].
*
* All parties who are receiving a finalised transaction from a sender flow must subcall this flow in their own flows.
*
* It's typical to have already signed the transaction proposal in the same workflow using [SignTransactionFlow]. If so
* then the transaction ID can be passed in as an extra check to ensure the finalised transaction is the one that was signed
* before it's committed to the vault.
*
* @param otherSideSession The session which is providing the transaction to record.
* @param expectedTxId Expected ID of the transaction that's about to be received. This is typically retrieved from
* [SignTransactionFlow].
* @param statesToRecord Which transactions to commit to the vault. Defaults to [StatesToRecord.ONLY_RELEVANT].
*/
class ReceiveFinalityFlow @JvmOverloads constructor(val otherSideSession: FlowSession,
val expectedTxId: SecureHash? = null,
val statesToRecord: StatesToRecord = ONLY_RELEVANT) : FlowLogic<SignedTransaction>() {
@Suspendable
override fun call(): SignedTransaction {
return subFlow(object : ReceiveTransactionFlow(otherSideSession, checkSufficientSignatures = true, statesToRecord = statesToRecord) {
override fun checkBeforeRecording(stx: SignedTransaction) {
require(expectedTxId == null || expectedTxId == stx.id) {
"We expected to receive transaction with ID $expectedTxId but instead got ${stx.id}. Transaction was" +
"not recorded and nor its states sent to the vault."
}
}
})
}
}

20
core/src/main/kotlin/net/corda/core/flows/ReceiveTransactionFlow.kt
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@ -23,9 +23,9 @@ import java.security.SignatureException
* @property checkSufficientSignatures if true checks all required signatures are present. See [SignedTransaction.verify]. * @property checkSufficientSignatures if true checks all required signatures are present. See [SignedTransaction.verify].
* @property statesToRecord which transaction states should be recorded in the vault, if any. * @property statesToRecord which transaction states should be recorded in the vault, if any.
*/ */
class ReceiveTransactionFlow @JvmOverloads constructor(private val otherSideSession: FlowSession, open class ReceiveTransactionFlow @JvmOverloads constructor(private val otherSideSession: FlowSession,
private val checkSufficientSignatures: Boolean = true, private val checkSufficientSignatures: Boolean = true,
private val statesToRecord: StatesToRecord = StatesToRecord.NONE) : FlowLogic<SignedTransaction>() { private val statesToRecord: StatesToRecord = StatesToRecord.NONE) : FlowLogic<SignedTransaction>() {
@Suppress("KDocMissingDocumentation") @Suppress("KDocMissingDocumentation")
@Suspendable @Suspendable
@Throws(SignatureException::class, @Throws(SignatureException::class,
@ -40,7 +40,7 @@ class ReceiveTransactionFlow @JvmOverloads constructor(private val otherSideSess
} }
val stx = otherSideSession.receive<SignedTransaction>().unwrap { val stx = otherSideSession.receive<SignedTransaction>().unwrap {
it.pushToLoggingContext() it.pushToLoggingContext()
logger.info("Received transaction acknowledgement request from party ${otherSideSession.counterparty.name}.") logger.info("Received transaction acknowledgement request from party ${otherSideSession.counterparty}.")
subFlow(ResolveTransactionsFlow(it, otherSideSession)) subFlow(ResolveTransactionsFlow(it, otherSideSession))
logger.info("Transaction dependencies resolution completed.") logger.info("Transaction dependencies resolution completed.")
try { try {
@ -54,12 +54,21 @@ class ReceiveTransactionFlow @JvmOverloads constructor(private val otherSideSess
if (checkSufficientSignatures) { if (checkSufficientSignatures) {
// We should only send a transaction to the vault for processing if we did in fact fully verify it, and // We should only send a transaction to the vault for processing if we did in fact fully verify it, and
// there are no missing signatures. We don't want partly signed stuff in the vault. // there are no missing signatures. We don't want partly signed stuff in the vault.
checkBeforeRecording(stx)
logger.info("Successfully received fully signed tx. Sending it to the vault for processing.") logger.info("Successfully received fully signed tx. Sending it to the vault for processing.")
serviceHub.recordTransactions(statesToRecord, setOf(stx)) serviceHub.recordTransactions(statesToRecord, setOf(stx))
logger.info("Successfully recorded received transaction locally.") logger.info("Successfully recorded received transaction locally.")
} }
return stx return stx
} }
/**
* Hook to perform extra checks on the received transaction just before it's recorded. The transaction has already
* been resolved and verified at this point.
*/
@Suspendable
@Throws(FlowException::class)
protected open fun checkBeforeRecording(stx: SignedTransaction) = Unit
} }
/** /**
@ -74,7 +83,8 @@ class ReceiveStateAndRefFlow<out T : ContractState>(private val otherSideSession
@Suspendable @Suspendable
override fun call(): List<StateAndRef<T>> { override fun call(): List<StateAndRef<T>> {
return otherSideSession.receive<List<StateAndRef<T>>>().unwrap { return otherSideSession.receive<List<StateAndRef<T>>>().unwrap {
subFlow(ResolveTransactionsFlow(it.map { it.ref.txhash }.toSet(), otherSideSession)) val txHashes = it.asSequence().map { it.ref.txhash }.toSet()
subFlow(ResolveTransactionsFlow(txHashes, otherSideSession))
it it
} }
} }

34
core/src/main/kotlin/net/corda/core/internal/cordapp/CordappInfoResolver.kt
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@ -1,5 +1,6 @@
package net.corda.core.internal.cordapp package net.corda.core.internal.cordapp
import net.corda.core.internal.PLATFORM_VERSION
import net.corda.core.internal.VisibleForTesting import net.corda.core.internal.VisibleForTesting
import net.corda.core.utilities.loggerFor import net.corda.core.utilities.loggerFor
import java.util.concurrent.ConcurrentHashMap import java.util.concurrent.ConcurrentHashMap
@ -11,12 +12,12 @@ object CordappInfoResolver {
private val logger = loggerFor<CordappInfoResolver>() private val logger = loggerFor<CordappInfoResolver>()
private val cordappClasses: ConcurrentHashMap<String, Set<CordappImpl.Info>> = ConcurrentHashMap() private val cordappClasses: ConcurrentHashMap<String, Set<CordappImpl.Info>> = ConcurrentHashMap()
// TODO use the StackWalker API once we migrate to Java 9+ // TODO Use the StackWalker API once we migrate to Java 9+
private var cordappInfoResolver: () -> CordappImpl.Info? = { private var cordappInfoResolver: () -> CordappImpl.Info? = {
Exception().stackTrace Exception().stackTrace
.mapNotNull { cordappClasses[it.className] } .mapNotNull { cordappClasses[it.className] }
// If there is more than one cordapp registered for a class name we can't determine the "correct" one and return null. // If there is more than one cordapp registered for a class name we can't determine the "correct" one and return null.
.firstOrNull { it.size < 2 }?.single() .firstOrNull { it.size == 1 }?.single()
} }
/* /*
@ -42,22 +43,33 @@ object CordappInfoResolver {
* In situations where a `[CordappProvider]` is available the CorDapp context should be obtained from there. * In situations where a `[CordappProvider]` is available the CorDapp context should be obtained from there.
* *
* @return Information about the CorDapp from which the invoker is called, null if called outside a CorDapp or the * @return Information about the CorDapp from which the invoker is called, null if called outside a CorDapp or the
* calling CorDapp cannot be reliably determined.. * calling CorDapp cannot be reliably determined.
*/ */
fun getCorDappInfo(): CordappImpl.Info? = cordappInfoResolver() val currentCordappInfo: CordappImpl.Info? get() = cordappInfoResolver()
/** /**
* Temporarily switch out the internal resolver for another one. For use in testing. * Returns the target version of the current calling CorDapp. Defaults to the current platform version if there isn't one.
*/
// TODO It may be the default is wrong and this should be Int? instead
val currentTargetVersion: Int get() = currentCordappInfo?.targetPlatformVersion ?: PLATFORM_VERSION
/**
* Temporarily apply a fake CorDapp.Info with the given parameters. For use in testing.
*/ */
@Synchronized @Synchronized
@VisibleForTesting @VisibleForTesting
fun withCordappInfoResolution(tempResolver: () -> CordappImpl.Info?, block: () -> Unit) { fun <T> withCordappInfo(shortName: String = "CordappInfoResolver.withCordappInfo",
val resolver = cordappInfoResolver vendor: String = "Corda",
cordappInfoResolver = tempResolver version: String = "1.0",
minimumPlatformVersion: Int = 1,
targetPlatformVersion: Int = PLATFORM_VERSION,
block: () -> T): T {
val currentResolver = cordappInfoResolver
cordappInfoResolver = { CordappImpl.Info(shortName, vendor, version, minimumPlatformVersion, targetPlatformVersion) }
try { try {
block() return block()
} finally { } finally {
cordappInfoResolver = resolver cordappInfoResolver = currentResolver
} }
} }
@ -65,4 +77,4 @@ object CordappInfoResolver {
internal fun clear() { internal fun clear() {
cordappClasses.clear() cordappClasses.clear()
} }
} }

10
core/src/test/kotlin/net/corda/core/flows/CollectSignaturesFlowTests.kt
View File

@ -5,8 +5,6 @@ import com.natpryce.hamkrest.assertion.assert
import net.corda.core.contracts.Command import net.corda.core.contracts.Command
import net.corda.core.contracts.StateAndContract import net.corda.core.contracts.StateAndContract
import net.corda.core.contracts.requireThat import net.corda.core.contracts.requireThat
import net.corda.testing.internal.matchers.flow.willReturn
import net.corda.testing.internal.matchers.flow.willThrow
import net.corda.core.flows.mixins.WithContracts import net.corda.core.flows.mixins.WithContracts
import net.corda.core.identity.CordaX500Name import net.corda.core.identity.CordaX500Name
import net.corda.core.identity.Party import net.corda.core.identity.Party
@ -17,6 +15,8 @@ import net.corda.core.transactions.SignedTransaction
import net.corda.core.transactions.TransactionBuilder import net.corda.core.transactions.TransactionBuilder
import net.corda.testing.contracts.DummyContract import net.corda.testing.contracts.DummyContract
import net.corda.testing.core.* import net.corda.testing.core.*
import net.corda.testing.internal.matchers.flow.willReturn
import net.corda.testing.internal.matchers.flow.willThrow
import net.corda.testing.internal.rigorousMock import net.corda.testing.internal.rigorousMock
import net.corda.testing.node.MockServices import net.corda.testing.node.MockServices
import net.corda.testing.node.internal.InternalMockNetwork import net.corda.testing.node.internal.InternalMockNetwork
@ -116,7 +116,7 @@ class CollectSignaturesFlowTests : WithContracts {
val ptx = serviceHub.signInitialTransaction(builder) val ptx = serviceHub.signInitialTransaction(builder)
val sessions = excludeHostNode(serviceHub, groupAbstractPartyByWellKnownParty(serviceHub, state.owners)).map { initiateFlow(it.key) } val sessions = excludeHostNode(serviceHub, groupAbstractPartyByWellKnownParty(serviceHub, state.owners)).map { initiateFlow(it.key) }
val stx = subFlow(CollectSignaturesFlow(ptx, sessions, myInputKeys)) val stx = subFlow(CollectSignaturesFlow(ptx, sessions, myInputKeys))
return subFlow(FinalityFlow(stx)) return subFlow(FinalityFlow(stx, sessions))
} }
} }
@ -136,8 +136,8 @@ class CollectSignaturesFlowTests : WithContracts {
} }
} }
val stx = subFlow(signFlow) val stxId = subFlow(signFlow).id
waitForLedgerCommit(stx.id) subFlow(ReceiveFinalityFlow(otherSideSession, expectedTxId = stxId))
} }
} }
} }

75
core/src/test/kotlin/net/corda/core/flows/FinalityFlowTests.kt
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@ -4,63 +4,98 @@ import com.natpryce.hamkrest.and
import com.natpryce.hamkrest.assertion.assert import com.natpryce.hamkrest.assertion.assert
import net.corda.core.flows.mixins.WithFinality import net.corda.core.flows.mixins.WithFinality
import net.corda.core.identity.Party import net.corda.core.identity.Party
import net.corda.core.internal.cordapp.CordappInfoResolver
import net.corda.core.transactions.SignedTransaction import net.corda.core.transactions.SignedTransaction
import net.corda.core.transactions.TransactionBuilder import net.corda.core.transactions.TransactionBuilder
import net.corda.core.utilities.getOrThrow
import net.corda.finance.POUNDS import net.corda.finance.POUNDS
import net.corda.finance.contracts.asset.Cash import net.corda.finance.contracts.asset.Cash
import net.corda.finance.issuedBy import net.corda.finance.issuedBy
import net.corda.testing.core.* import net.corda.testing.core.*
import net.corda.testing.internal.matchers.flow.willReturn import net.corda.testing.internal.matchers.flow.willReturn
import net.corda.testing.internal.matchers.flow.willThrow import net.corda.testing.internal.matchers.flow.willThrow
import net.corda.testing.node.internal.InternalMockNetwork import net.corda.testing.node.TestCordapp
import net.corda.testing.node.internal.TestStartedNode import net.corda.testing.node.internal.*
import net.corda.testing.node.internal.cordappsForPackages import org.assertj.core.api.Assertions.assertThat
import org.junit.AfterClass import org.assertj.core.api.Assertions.assertThatIllegalArgumentException
import org.junit.After
import org.junit.Test import org.junit.Test
class FinalityFlowTests : WithFinality { class FinalityFlowTests : WithFinality {
companion object { companion object {
private val CHARLIE = TestIdentity(CHARLIE_NAME, 90).party private val CHARLIE = TestIdentity(CHARLIE_NAME, 90).party
private val classMockNet = InternalMockNetwork(cordappsForAllNodes = cordappsForPackages(
"net.corda.finance.contracts.asset",
"net.corda.finance.schemas"
))
@JvmStatic
@AfterClass
fun tearDown() = classMockNet.stopNodes()
} }
override val mockNet = classMockNet override val mockNet = InternalMockNetwork(cordappsForAllNodes = cordappsForPackages(
"net.corda.finance.contracts.asset",
"net.corda.finance.schemas",
"net.corda.core.flows.mixins"
))
private val aliceNode = makeNode(ALICE_NAME) private val aliceNode = makeNode(ALICE_NAME)
private val bobNode = makeNode(BOB_NAME)
private val bob = bobNode.info.singleIdentity()
private val notary = mockNet.defaultNotaryIdentity private val notary = mockNet.defaultNotaryIdentity
@After
fun tearDown() = mockNet.stopNodes()
@Test @Test
fun `finalise a simple transaction`() { fun `finalise a simple transaction`() {
val stx = aliceNode.signCashTransactionWith(bob) val bob = createBob()
val stx = aliceNode.issuesCashTo(bob)
assert.that( assert.that(
aliceNode.finalise(stx), aliceNode.finalise(stx, bob.info.singleIdentity()),
willReturn( willReturn(
requiredSignatures(1) requiredSignatures(1)
and visibleTo(bobNode))) and visibleTo(bob)))
} }
@Test @Test
fun `reject a transaction with unknown parties`() { fun `reject a transaction with unknown parties`() {
// Charlie isn't part of this network, so node A won't recognise them // Charlie isn't part of this network, so node A won't recognise them
val stx = aliceNode.signCashTransactionWith(CHARLIE) val stx = aliceNode.issuesCashTo(CHARLIE)
assert.that( assert.that(
aliceNode.finalise(stx), aliceNode.finalise(stx),
willThrow<IllegalArgumentException>()) willThrow<IllegalArgumentException>())
} }
private fun TestStartedNode.signCashTransactionWith(other: Party): SignedTransaction { @Test
fun `prevent use of the old API if the CorDapp target version is 4`() {
val bob = createBob()
val stx = aliceNode.issuesCashTo(bob)
val resultFuture = CordappInfoResolver.withCordappInfo(targetPlatformVersion = 4) {
@Suppress("DEPRECATION")
aliceNode.startFlowAndRunNetwork(FinalityFlow(stx)).resultFuture
}
assertThatIllegalArgumentException().isThrownBy {
resultFuture.getOrThrow()
}.withMessageContaining("A flow session for each external participant to the transaction must be provided.")
}
@Test
fun `allow use of the old API if the CorDapp target version is 3`() {
// We need Bob to load at least one old CorDapp so that its FinalityHandler is enabled
val bob = createBob(cordapps = listOf(cordappForPackages("com.template").withTargetVersion(3)))
val stx = aliceNode.issuesCashTo(bob)
val resultFuture = CordappInfoResolver.withCordappInfo(targetPlatformVersion = 3) {
@Suppress("DEPRECATION")
aliceNode.startFlowAndRunNetwork(FinalityFlow(stx)).resultFuture
}
resultFuture.getOrThrow()
assertThat(bob.services.validatedTransactions.getTransaction(stx.id)).isNotNull()
}
private fun createBob(cordapps: List<TestCordapp> = emptyList()): TestStartedNode {
return mockNet.createNode(InternalMockNodeParameters(legalName = BOB_NAME, additionalCordapps = cordapps))
}
private fun TestStartedNode.issuesCashTo(recipient: TestStartedNode): SignedTransaction {
return issuesCashTo(recipient.info.singleIdentity())
}
private fun TestStartedNode.issuesCashTo(other: Party): SignedTransaction {
val amount = 1000.POUNDS.issuedBy(info.singleIdentity().ref(0)) val amount = 1000.POUNDS.issuedBy(info.singleIdentity().ref(0))
val builder = TransactionBuilder(notary) val builder = TransactionBuilder(notary)
Cash().generateIssue(builder, amount, other, notary) Cash().generateIssue(builder, amount, other, notary)

6
core/src/test/kotlin/net/corda/core/flows/WithReferencedStatesFlowTests.kt
View File

@ -50,7 +50,7 @@ internal class CreateRefState : FlowLogic<SignedTransaction>() {
addOutputState(RefState.State(ourIdentity), RefState.CONTRACT_ID) addOutputState(RefState.State(ourIdentity), RefState.CONTRACT_ID)
addCommand(RefState.Create(), listOf(ourIdentity.owningKey)) addCommand(RefState.Create(), listOf(ourIdentity.owningKey))
}) })
return subFlow(FinalityFlow(stx)) return subFlow(FinalityFlow(stx, emptyList()))
} }
} }
@ -64,7 +64,7 @@ internal class UpdateRefState(private val stateAndRef: StateAndRef<RefState.Stat
addOutputState(stateAndRef.state.data.update(), RefState.CONTRACT_ID) addOutputState(stateAndRef.state.data.update(), RefState.CONTRACT_ID)
addCommand(RefState.Update(), listOf(ourIdentity.owningKey)) addCommand(RefState.Update(), listOf(ourIdentity.owningKey))
}) })
return subFlow(FinalityFlow(stx)) return subFlow(FinalityFlow(stx, emptyList()))
} }
} }
@ -111,7 +111,7 @@ internal class UseRefState(private val linearId: UniqueIdentifier) : FlowLogic<S
addOutputState(DummyState(), DummyContract.PROGRAM_ID) addOutputState(DummyState(), DummyContract.PROGRAM_ID)
addCommand(DummyContract.Commands.Create(), listOf(ourIdentity.owningKey)) addCommand(DummyContract.Commands.Create(), listOf(ourIdentity.owningKey))
}) })
return subFlow(FinalityFlow(stx)) return subFlow(FinalityFlow(stx, emptyList()))
} }
} }

28
core/src/test/kotlin/net/corda/core/flows/mixins/WithFinality.kt
View File

@ -4,9 +4,7 @@ import co.paralleluniverse.fibers.Suspendable
import com.natpryce.hamkrest.MatchResult import com.natpryce.hamkrest.MatchResult
import com.natpryce.hamkrest.Matcher import com.natpryce.hamkrest.Matcher
import com.natpryce.hamkrest.equalTo import com.natpryce.hamkrest.equalTo
import net.corda.core.flows.FinalityFlow import net.corda.core.flows.*
import net.corda.core.flows.FlowLogic
import net.corda.core.flows.StartableByRPC
import net.corda.core.identity.Party import net.corda.core.identity.Party
import net.corda.core.internal.FlowStateMachine import net.corda.core.internal.FlowStateMachine
import net.corda.core.messaging.CordaRPCOps import net.corda.core.messaging.CordaRPCOps
@ -18,16 +16,16 @@ import net.corda.testing.node.internal.TestStartedNode
interface WithFinality : WithMockNet { interface WithFinality : WithMockNet {
//region Operations //region Operations
fun TestStartedNode.finalise(stx: SignedTransaction, vararg additionalParties: Party): FlowStateMachine<SignedTransaction> { fun TestStartedNode.finalise(stx: SignedTransaction, vararg recipients: Party): FlowStateMachine<SignedTransaction> {
return startFlowAndRunNetwork(FinalityFlow(stx, additionalParties.toSet())) return startFlowAndRunNetwork(FinalityInvoker(stx, recipients.toSet()))
} }
fun TestStartedNode.getValidatedTransaction(stx: SignedTransaction): SignedTransaction { fun TestStartedNode.getValidatedTransaction(stx: SignedTransaction): SignedTransaction {
return services.validatedTransactions.getTransaction(stx.id)!! return services.validatedTransactions.getTransaction(stx.id)!!
} }
fun CordaRPCOps.finalise(stx: SignedTransaction, vararg parties: Party): FlowHandle<SignedTransaction> { fun CordaRPCOps.finalise(stx: SignedTransaction, vararg recipients: Party): FlowHandle<SignedTransaction> {
return startFlow(::FinalityInvoker, stx, parties.toSet()).andRunNetwork() return startFlow(::FinalityInvoker, stx, recipients.toSet()).andRunNetwork()
} }
//endregion //endregion
@ -40,10 +38,22 @@ interface WithFinality : WithMockNet {
} }
//endregion //endregion
@InitiatingFlow
@StartableByRPC @StartableByRPC
class FinalityInvoker(private val transaction: SignedTransaction, class FinalityInvoker(private val transaction: SignedTransaction,
private val extraRecipients: Set<Party>) : FlowLogic<SignedTransaction>() { private val recipients: Set<Party>) : FlowLogic<SignedTransaction>() {
@Suspendable @Suspendable
override fun call(): SignedTransaction = subFlow(FinalityFlow(transaction, extraRecipients)) override fun call(): SignedTransaction {
val sessions = recipients.map(::initiateFlow)
return subFlow(FinalityFlow(transaction, sessions))
}
}
@InitiatedBy(FinalityInvoker::class)
class FinalityResponder(private val otherSide: FlowSession) : FlowLogic<Unit>() {
@Suspendable
override fun call() {
subFlow(ReceiveFinalityFlow(otherSide))
}
} }
} }

27
core/src/test/kotlin/net/corda/core/internal/cordapp/CordappInfoResolverTest.kt
View File

@ -1,42 +1,37 @@
package net.corda.core.internal.cordapp package net.corda.core.internal.cordapp
import org.assertj.core.api.Assertions.assertThat
import org.junit.After import org.junit.After
import org.junit.Before import org.junit.Before
import org.junit.Test import org.junit.Test
import kotlin.test.assertEquals import kotlin.test.assertEquals
class CordappInfoResolverTest { class CordappInfoResolverTest {
@Before @Before
@After @After
fun clearCordappInfoResolver() { fun clearCordappInfoResolver() {
CordappInfoResolver.clear() CordappInfoResolver.clear()
} }
@Test() @Test
fun `The correct cordapp resolver is used after calling withCordappResolution`() { fun `the correct cordapp resolver is used after calling withCordappInfo`() {
val defaultTargetVersion = 222 val defaultTargetVersion = 222
CordappInfoResolver.register(listOf(javaClass.name), CordappImpl.Info("test", "test", "2", 3, defaultTargetVersion)) CordappInfoResolver.register(listOf(javaClass.name), CordappImpl.Info("test", "test", "2", 3, defaultTargetVersion))
assertEquals(defaultTargetVersion, returnCallingTargetVersion()) assertEquals(defaultTargetVersion, CordappInfoResolver.currentTargetVersion)
val expectedTargetVersion = 555 val expectedTargetVersion = 555
CordappInfoResolver.withCordappInfoResolution( { CordappImpl.Info("foo", "bar", "1", 2, expectedTargetVersion) }) CordappInfoResolver.withCordappInfo(targetPlatformVersion = expectedTargetVersion) {
{ val actualTargetVersion = CordappInfoResolver.currentTargetVersion
val actualTargetVersion = returnCallingTargetVersion()
assertEquals(expectedTargetVersion, actualTargetVersion) assertEquals(expectedTargetVersion, actualTargetVersion)
} }
assertEquals(defaultTargetVersion, returnCallingTargetVersion()) assertEquals(defaultTargetVersion, CordappInfoResolver.currentTargetVersion)
} }
@Test() @Test
fun `When more than one cordapp is registered for the same class, the resolver returns null`() { fun `when more than one cordapp is registered for the same class, the resolver returns null`() {
CordappInfoResolver.register(listOf(javaClass.name), CordappImpl.Info("test", "test", "2", 3, 222)) CordappInfoResolver.register(listOf(javaClass.name), CordappImpl.Info("test", "test", "2", 3, 222))
CordappInfoResolver.register(listOf(javaClass.name), CordappImpl.Info("test1", "test1", "1", 2, 456)) CordappInfoResolver.register(listOf(javaClass.name), CordappImpl.Info("test1", "test1", "1", 2, 456))
assertEquals(0, returnCallingTargetVersion()) assertThat(CordappInfoResolver.currentCordappInfo).isNull()
} }
}
private fun returnCallingTargetVersion(): Int {
return CordappInfoResolver.getCorDappInfo()?.targetPlatformVersion ?: 0
}
}

42
docs/source/api-flows.rst
View File

@ -522,6 +522,9 @@ An example is the ``@InitiatingFlow InitiatorFlow``/``@InitiatedBy ResponderFlow
.. note:: Initiating flows are versioned separately from their parents. .. note:: Initiating flows are versioned separately from their parents.
.. note:: The only exception to this rule is ``FinalityFlow`` which is annotated with ``@InitiatingFlow`` but is an inlined flow. This flow
was previously initiating and the annotation exists to maintain backwards compatibility with old code.
Core initiating subflows Core initiating subflows
~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~
Corda-provided initiating subflows are a little different to standard ones as they are versioned together with the Corda-provided initiating subflows are a little different to standard ones as they are versioned together with the
@ -532,8 +535,6 @@ Library flows
^^^^^^^^^^^^^ ^^^^^^^^^^^^^
Corda installs four initiating subflow pairs on each node by default: Corda installs four initiating subflow pairs on each node by default:
* ``FinalityFlow``/``FinalityHandler``, which should be used to notarise and record a transaction and broadcast it to
all relevant parties
* ``NotaryChangeFlow``/``NotaryChangeHandler``, which should be used to change a state's notary * ``NotaryChangeFlow``/``NotaryChangeHandler``, which should be used to change a state's notary
* ``ContractUpgradeFlow.Initiate``/``ContractUpgradeHandler``, which should be used to change a state's contract * ``ContractUpgradeFlow.Initiate``/``ContractUpgradeHandler``, which should be used to change a state's contract
* ``SwapIdentitiesFlow``/``SwapIdentitiesHandler``, which is used to exchange confidential identities with a * ``SwapIdentitiesFlow``/``SwapIdentitiesHandler``, which is used to exchange confidential identities with a
@ -546,10 +547,13 @@ Corda installs four initiating subflow pairs on each node by default:
Corda also provides a number of built-in inlined subflows that should be used for handling common tasks. The most Corda also provides a number of built-in inlined subflows that should be used for handling common tasks. The most
important are: important are:
* ``CollectSignaturesFlow`` (inlined), which should be used to collect a transaction's required signatures * ``FinalityFlow`` which is used to notarise, record locally and then broadcast a signed transaction to its participants
* ``SendTransactionFlow`` (inlined), which should be used to send a signed transaction if it needed to be resolved on and any extra parties.
* ``ReceiveFinalityFlow`` to receive these notarised transactions from the ``FinalityFlow`` sender and record locally.
* ``CollectSignaturesFlow`` , which should be used to collect a transaction's required signatures
* ``SendTransactionFlow`` , which should be used to send a signed transaction if it needed to be resolved on
the other side. the other side.
* ``ReceiveTransactionFlow`` (inlined), which should be used receive a signed transaction * ``ReceiveTransactionFlow``, which should be used receive a signed transaction
Let's look at some of these flows in more detail. Let's look at some of these flows in more detail.
@ -588,20 +592,26 @@ We can also choose to send the transaction to additional parties who aren't one
:end-before: DOCEND 10 :end-before: DOCEND 10
:dedent: 12 :dedent: 12
Only one party has to call ``FinalityFlow`` for a given transaction to be recorded by all participants. It does Only one party has to call ``FinalityFlow`` for a given transaction to be recorded by all participants. It **must not**
**not** need to be called by each participant individually. be called by every participant. Instead, every other particpant **must** call ``ReceiveFinalityFlow`` in their responder
flow to receive the transaction:
Because the transaction has already been notarised and the input states consumed, if the participants when receiving the .. container:: codeset
transaction fail to verify it, or the receiving flow (the finality handler) fails due to some other error, we then have
the scenario where not all parties have the correct up to date view of the ledger. To recover from this the finality handler
is automatically sent to the flow hospital where it's suspended and retried from its last checkpoint on node restart.
This gives the node operator the opportunity to recover from the error. Until the issue is resolved the node will continue
to retry the flow on each startup.
.. note:: It's possible to forcibly terminate the erroring finality handler using the ``killFlow`` RPC but at the risk .. literalinclude:: ../../docs/source/example-code/src/main/kotlin/net/corda/docs/kotlin/FlowCookbook.kt
of an inconsistent view of the ledger. :language: kotlin
:start-after: DOCSTART ReceiveFinalityFlow
:end-before: DOCEND ReceiveFinalityFlow
:dedent: 8
.. note:: A future release will allow retrying hospitalised flows without restarting the node, i.e. via RPC. .. literalinclude:: ../../docs/source/example-code/src/main/java/net/corda/docs/java/FlowCookbook.java
:language: java
:start-after: DOCSTART ReceiveFinalityFlow
:end-before: DOCEND ReceiveFinalityFlow
:dedent: 12
``idOfTxWeSigned`` is an optional parameter used to confirm that we got the right transaction. It comes from using ``SignTransactionFlow``
which is described below.
CollectSignaturesFlow/SignTransactionFlow CollectSignaturesFlow/SignTransactionFlow
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

10
docs/source/api-persistence.rst
View File

@ -137,23 +137,23 @@ Use the ``ServiceHub`` ``jdbcSession`` function to obtain a JDBC connection as i
:start-after: DOCSTART JdbcSession :start-after: DOCSTART JdbcSession
:end-before: DOCEND JdbcSession :end-before: DOCEND JdbcSession
JDBC session's can be used in Flows and Service Plugins (see ":doc:`flow-state-machines`") JDBC sessions can be used in flows and services (see ":doc:`flow-state-machines`").
The following example illustrates the creation of a custom corda service using a jdbcSession: The following example illustrates the creation of a custom Corda service using a ``jdbcSession``:
.. literalinclude:: ../../docs/source/example-code/src/main/kotlin/net/corda/docs/kotlin/CustomVaultQuery.kt .. literalinclude:: ../../docs/source/example-code/src/main/kotlin/net/corda/docs/kotlin/vault/CustomVaultQuery.kt
:language: kotlin :language: kotlin
:start-after: DOCSTART CustomVaultQuery :start-after: DOCSTART CustomVaultQuery
:end-before: DOCEND CustomVaultQuery :end-before: DOCEND CustomVaultQuery
which is then referenced within a custom flow: which is then referenced within a custom flow:
.. literalinclude:: ../../docs/source/example-code/src/main/kotlin/net/corda/docs/kotlin/CustomVaultQuery.kt .. literalinclude:: ../../docs/source/example-code/src/main/kotlin/net/corda/docs/kotlin/vault/CustomVaultQuery.kt
:language: kotlin :language: kotlin
:start-after: DOCSTART TopupIssuer :start-after: DOCSTART TopupIssuer
:end-before: DOCEND TopupIssuer :end-before: DOCEND TopupIssuer
For examples on testing ``@CordaService`` implementations, see the oracle example :doc:`here <oracles>` For examples on testing ``@CordaService`` implementations, see the oracle example :doc:`here <oracles>`.
JPA Support JPA Support
----------- -----------

2
docs/source/api-states.rst
View File

@ -24,7 +24,7 @@ are considered to have a stake in the state. Among other things, the ``participa
* Need to sign any notary-change and contract-upgrade transactions involving this state * Need to sign any notary-change and contract-upgrade transactions involving this state
* Receive any finalised transactions involving this state as part of ``FinalityFlow`` * Receive any finalised transactions involving this state as part of ``FinalityFlow`` / ``ReceiveFinalityFlow``
ContractState sub-interfaces ContractState sub-interfaces
---------------------------- ----------------------------

16
docs/source/changelog.rst
View File

@ -12,9 +12,21 @@ Unreleased
* New "validate-configuration" sub-command to `corda.jar`, allowing to validate the actual node configuration without starting the node. * New "validate-configuration" sub-command to `corda.jar`, allowing to validate the actual node configuration without starting the node.
* Introduced new optional network bootstrapper command line option (--minimum-platform-version) to set as a network parameter * CorDapps now have the ability to specify a minimum platform version in their MANIFEST.MF to prevent old nodes from loading them.
* Introduce minimum and target platform version for CorDapps. * CorDapps have the ability to specify a target platform version in their MANIFEST.MF as a means of indicating to the node
the app was designed and tested on that version.
* Nodes will no longer automatically reject flow initiation requests for flows they don't know about. Instead the request will remain
un-acknowledged in the message broker. This enables the recovery scenerio whereby any missing CorDapp can be installed and retried on node
restart. As a consequence the initiating flow will be blocked until the receiving node has resolved the issue.
* ``FinalityFlow`` is now an inlined flow and no longer requires a handler flow in the counterparty. This is to fix the
security problem with the handler flow as it accepts any transaction it receives without any checks. Existing CorDapp
binaries relying on this old behaviour will continue to function as previously. However, it is strongly recommended that
CorDapps switch to this new API. See :doc:`upgrade-notes` for further details.
* Introduced new optional network bootstrapper command line option (--minimum-platform-version) to set as a network parameter
* BFT-Smart and Raft notary implementations have been extracted out of node into ``experimental`` CorDapps to emphasise * BFT-Smart and Raft notary implementations have been extracted out of node into ``experimental`` CorDapps to emphasise
their experimental nature. Moreover, the BFT-Smart notary will only work in dev mode due to its use of Java serialization. their experimental nature. Moreover, the BFT-Smart notary will only work in dev mode due to its use of Java serialization.

4
docs/source/contributing-flow-state-machines.rst
View File

@ -85,12 +85,12 @@ flow with a full node.
.. container:: codeset .. container:: codeset
.. literalinclude:: ../../docs/source/example-code/src/integration-test/kotlin/net/corda/docs/TutorialFlowAsyncOperationTest.kt .. literalinclude:: ../../docs/source/example-code/src/integration-test/kotlin/net/corda/docs/kotlin/tutorial/test/TutorialFlowAsyncOperationTest.kt
:language: kotlin :language: kotlin
:start-after: DOCSTART summingWorks :start-after: DOCSTART summingWorks
:end-before: DOCEND summingWorks :end-before: DOCEND summingWorks
.. literalinclude:: ../../docs/source/example-code/src/integration-test/java/net/corda/docs/java/TutorialFlowAsyncOperationTest.java .. literalinclude:: ../../docs/source/example-code/src/integration-test/java/net/corda/docs/java/tutorial/test/TutorialFlowAsyncOperationTest.java
:language: java :language: java
:start-after: DOCSTART summingWorks :start-after: DOCSTART summingWorks
:end-before: DOCEND summingWorks :end-before: DOCEND summingWorks

8
docs/source/example-code/src/integration-test/java/net/corda/docs/JavaIntegrationTestingTutorial.java → docs/source/example-code/src/integration-test/java/net/corda/docs/java/tutorial/test/JavaIntegrationTestingTutorial.java
View File

@ -1,4 +1,4 @@
package net.corda.docs; package net.corda.docs.java.tutorial.test;
import net.corda.client.rpc.CordaRPCClient; import net.corda.client.rpc.CordaRPCClient;
import net.corda.core.concurrent.CordaFuture; import net.corda.core.concurrent.CordaFuture;
@ -18,7 +18,9 @@ import net.corda.testing.node.User;
import org.junit.Test; import org.junit.Test;
import rx.Observable; import rx.Observable;
import java.util.*; import java.util.Currency;
import java.util.HashSet;
import java.util.List;
import static java.util.Arrays.asList; import static java.util.Arrays.asList;
import static java.util.Collections.singletonList; import static java.util.Collections.singletonList;
@ -38,7 +40,7 @@ public class JavaIntegrationTestingTutorial {
// START 1 // START 1
driver(new DriverParameters() driver(new DriverParameters()
.withStartNodesInProcess(true) .withStartNodesInProcess(true)
.withExtraCordappPackagesToScan(Arrays.asList("net.corda.finance.contracts.asset", "net.corda.finance.schemas")), dsl -> { .withExtraCordappPackagesToScan(singletonList("net.corda.finance")), dsl -> {
User aliceUser = new User("aliceUser", "testPassword1", new HashSet<>(asList( User aliceUser = new User("aliceUser", "testPassword1", new HashSet<>(asList(
startFlow(CashIssueAndPaymentFlow.class), startFlow(CashIssueAndPaymentFlow.class),

2
docs/source/example-code/src/integration-test/java/net/corda/docs/java/TutorialFlowAsyncOperationTest.java → docs/source/example-code/src/integration-test/java/net/corda/docs/java/tutorial/test/TutorialFlowAsyncOperationTest.java
View File

@ -1,4 +1,4 @@
package net.corda.docs.java; package net.corda.docs.java.tutorial.test;
import kotlin.Unit; import kotlin.Unit;
import net.corda.client.rpc.CordaRPCClient; import net.corda.client.rpc.CordaRPCClient;

7
docs/source/example-code/src/integration-test/kotlin/net/corda/docs/KotlinIntegrationTestingTutorial.kt → docs/source/example-code/src/integration-test/kotlin/net/corda/docs/kotlin/tutorial/test/KotlinIntegrationTestingTutorial.kt
View File

@ -1,4 +1,4 @@
package net.corda.docs package net.corda.docs.kotlin.tutorial.test
import net.corda.client.rpc.CordaRPCClient import net.corda.client.rpc.CordaRPCClient
import net.corda.core.contracts.Amount import net.corda.core.contracts.Amount
@ -29,10 +29,7 @@ class KotlinIntegrationTestingTutorial {
@Test @Test
fun `alice bob cash exchange example`() { fun `alice bob cash exchange example`() {
// START 1 // START 1
driver(DriverParameters( driver(DriverParameters(startNodesInProcess = true, extraCordappPackagesToScan = listOf("net.corda.finance"))) {
startNodesInProcess = true,
extraCordappPackagesToScan = listOf("net.corda.finance.contracts.asset", "net.corda.finance.schemas")
)) {
val aliceUser = User("aliceUser", "testPassword1", permissions = setOf( val aliceUser = User("aliceUser", "testPassword1", permissions = setOf(
startFlow<CashIssueAndPaymentFlow>(), startFlow<CashIssueAndPaymentFlow>(),
invokeRpc("vaultTrackBy") invokeRpc("vaultTrackBy")

2
docs/source/example-code/src/integration-test/kotlin/net/corda/docs/TutorialFlowAsyncOperationTest.kt → docs/source/example-code/src/integration-test/kotlin/net/corda/docs/kotlin/tutorial/test/TutorialFlowAsyncOperationTest.kt
View File

@ -1,4 +1,4 @@
package net.corda.docs package net.corda.docs.kotlin.tutorial.test
import net.corda.client.rpc.CordaRPCClient import net.corda.client.rpc.CordaRPCClient
import net.corda.core.messaging.startFlow import net.corda.core.messaging.startFlow

134
docs/source/example-code/src/main/java/net/corda/docs/java/FinalityFlowMigration.java Normal file
View File

@ -0,0 +1,134 @@
package net.corda.docs.java;
import co.paralleluniverse.fibers.Suspendable;
import net.corda.core.flows.*;
import net.corda.core.identity.Party;
import net.corda.core.transactions.SignedTransaction;
import org.jetbrains.annotations.NotNull;
import static java.util.Collections.singletonList;
@SuppressWarnings("ALL")
public class FinalityFlowMigration {
public static SignedTransaction dummyTransactionWithParticipant(Party party) {
throw new UnsupportedOperationException();
}
// DOCSTART SimpleFlowUsingOldApi
public static class SimpleFlowUsingOldApi extends FlowLogic<SignedTransaction> {
private final Party counterparty;
@Suspendable
@Override
public SignedTransaction call() throws FlowException {
SignedTransaction stx = dummyTransactionWithParticipant(counterparty);
return subFlow(new FinalityFlow(stx));
}
// DOCEND SimpleFlowUsingOldApi
public SimpleFlowUsingOldApi(Party counterparty) {
this.counterparty = counterparty;
}
}
// DOCSTART SimpleFlowUsingNewApi
// Notice how the flow *must* now be an initiating flow even when it wasn't before.
@InitiatingFlow
public static class SimpleFlowUsingNewApi extends FlowLogic<SignedTransaction> {
private final Party counterparty;
@Suspendable
@Override
public SignedTransaction call() throws FlowException {
SignedTransaction stx = dummyTransactionWithParticipant(counterparty);
// For each non-local participant in the transaction we must initiate a flow session with them.
FlowSession session = initiateFlow(counterparty);
return subFlow(new FinalityFlow(stx, session));
}
// DOCEND SimpleFlowUsingNewApi
public SimpleFlowUsingNewApi(Party counterparty) {
this.counterparty = counterparty;
}
}
// DOCSTART SimpleNewResponderFlow
// All participants will run this flow to receive and record the finalised transaction into their vault.
@InitiatedBy(SimpleFlowUsingNewApi.class)
public static class SimpleNewResponderFlow extends FlowLogic<Void> {
private final FlowSession otherSide;
@Suspendable
@Override
public Void call() throws FlowException {
subFlow(new ReceiveFinalityFlow(otherSide));
return null;
}
// DOCEND SimpleNewResponderFlow
public SimpleNewResponderFlow(FlowSession otherSide) {
this.otherSide = otherSide;
}
}
// DOCSTART ExistingInitiatingFlow
// Assuming the previous version of the flow was 1 (the default if none is specified), we increment the version number to 2
// to allow for backwards compatibility with nodes running the old CorDapp.
@InitiatingFlow(version = 2)
public static class ExistingInitiatingFlow extends FlowLogic<SignedTransaction> {
private final Party counterparty;
@Suspendable
@Override
public SignedTransaction call() throws FlowException {
SignedTransaction partiallySignedTx = dummyTransactionWithParticipant(counterparty);
FlowSession session = initiateFlow(counterparty);
SignedTransaction fullySignedTx = subFlow(new CollectSignaturesFlow(partiallySignedTx, singletonList(session)));
// Determine which version of the flow that other side is using.
if (session.getCounterpartyFlowInfo().getFlowVersion() == 1) {
// Use the old API if the other side is using the previous version of the flow.
return subFlow(new FinalityFlow(fullySignedTx));
} else {
// Otherwise they're at least on version 2 and so we can send the finalised transaction on the existing session.
return subFlow(new FinalityFlow(fullySignedTx, session));
}
}
// DOCEND ExistingInitiatingFlow
public ExistingInitiatingFlow(Party counterparty) {
this.counterparty = counterparty;
}
}
@InitiatedBy(ExistingInitiatingFlow.class)
public static class ExistingResponderFlow extends FlowLogic<Void> {
private final FlowSession otherSide;
public ExistingResponderFlow(FlowSession otherSide) {
this.otherSide = otherSide;
}
@Suspendable
@Override
public Void call() throws FlowException {
SignedTransaction txWeJustSigned = subFlow(new SignTransactionFlow(otherSide) {
@Suspendable
@Override
protected void checkTransaction(@NotNull SignedTransaction stx) throws FlowException {
// Do checks here
}
});
// DOCSTART ExistingResponderFlow
if (otherSide.getCounterpartyFlowInfo().getFlowVersion() >= 2) {
// The other side is not using the old CorDapp so call ReceiveFinalityFlow to record the finalised transaction.
// If SignTransactionFlow is used then we can verify the tranaction we receive for recording is the same one
// that was just signed.
subFlow(new ReceiveFinalityFlow(otherSide, txWeJustSigned.getId()));
} else {
// Otherwise the other side is running the old CorDapp and so we don't need to do anything further. The node
// will automatically record the finalised transaction using the old insecure mechanism.
}
// DOCEND ExistingResponderFlow
return null;
}
}
}

19
docs/source/example-code/src/main/java/net/corda/docs/java/FlowCookbook.java
View File

@ -28,8 +28,8 @@ import java.security.GeneralSecurityException;
import java.security.PublicKey; import java.security.PublicKey;
import java.time.Duration; import java.time.Duration;
import java.time.Instant; import java.time.Instant;
import java.util.Arrays;
import java.util.List; import java.util.List;
import java.util.Set;
import static com.google.common.base.Preconditions.checkArgument; import static com.google.common.base.Preconditions.checkArgument;
import static java.util.Collections.*; import static java.util.Collections.*;
@ -578,13 +578,13 @@ public class FlowCookbook {
// We notarise the transaction and get it recorded in the vault of // We notarise the transaction and get it recorded in the vault of
// the participants of all the transaction's states. // the participants of all the transaction's states.
// DOCSTART 09 // DOCSTART 09
SignedTransaction notarisedTx1 = subFlow(new FinalityFlow(fullySignedTx, FINALISATION.childProgressTracker())); SignedTransaction notarisedTx1 = subFlow(new FinalityFlow(fullySignedTx, singleton(counterpartySession), FINALISATION.childProgressTracker()));
// DOCEND 09 // DOCEND 09
// We can also choose to send it to additional parties who aren't one // We can also choose to send it to additional parties who aren't one
// of the state's participants. // of the state's participants.
// DOCSTART 10 // DOCSTART 10
Set<Party> additionalParties = singleton(regulator); List<FlowSession> partySessions = Arrays.asList(counterpartySession, initiateFlow(regulator));
SignedTransaction notarisedTx2 = subFlow(new FinalityFlow(fullySignedTx, additionalParties, FINALISATION.childProgressTracker())); SignedTransaction notarisedTx2 = subFlow(new FinalityFlow(fullySignedTx, partySessions, FINALISATION.childProgressTracker()));
// DOCEND 10 // DOCEND 10
// DOCSTART FlowSession porting // DOCSTART FlowSession porting
@ -673,7 +673,7 @@ public class FlowCookbook {
} }
} }
subFlow(new SignTxFlow(counterpartySession, SignTransactionFlow.tracker())); SecureHash idOfTxWeSigned = subFlow(new SignTxFlow(counterpartySession, SignTransactionFlow.tracker())).getId();
// DOCEND 16 // DOCEND 16
/*------------------------------ /*------------------------------
@ -681,9 +681,12 @@ public class FlowCookbook {
------------------------------*/ ------------------------------*/
progressTracker.setCurrentStep(FINALISATION); progressTracker.setCurrentStep(FINALISATION);
// Nothing to do here! As long as some other party calls // As the final step the responder waits to receive the notarised transaction from the sending party
// ``FinalityFlow``, the recording of the transaction on our node // Since it knows the ID of the transaction it just signed, the transaction ID is specified to ensure the correct
// we be handled automatically. // transaction is received and recorded.
// DOCSTART ReceiveFinalityFlow
subFlow(new ReceiveFinalityFlow(counterpartySession, idOfTxWeSigned));
// DOCEND ReceiveFinalityFlow
return null; return null;
} }

13
docs/source/example-code/src/main/java/net/corda/docs/java/tutorial/helloworld/IOUFlow.java
View File

@ -2,16 +2,12 @@ package net.corda.docs.java.tutorial.helloworld;
import co.paralleluniverse.fibers.Suspendable; import co.paralleluniverse.fibers.Suspendable;
import com.template.TemplateContract; import com.template.TemplateContract;
import net.corda.core.flows.FlowException; import net.corda.core.flows.*;
import net.corda.core.flows.FlowLogic;
import net.corda.core.flows.InitiatingFlow;
import net.corda.core.flows.StartableByRPC;
import net.corda.core.utilities.ProgressTracker; import net.corda.core.utilities.ProgressTracker;
// DOCSTART 01 // DOCSTART 01
// Add these imports: // Add these imports:
import net.corda.core.contracts.Command; import net.corda.core.contracts.Command;
import net.corda.core.flows.FinalityFlow;
import net.corda.core.identity.Party; import net.corda.core.identity.Party;
import net.corda.core.transactions.SignedTransaction; import net.corda.core.transactions.SignedTransaction;
import net.corda.core.transactions.TransactionBuilder; import net.corda.core.transactions.TransactionBuilder;
@ -59,8 +55,11 @@ public class IOUFlow extends FlowLogic<Void> {
// Signing the transaction. // Signing the transaction.
SignedTransaction signedTx = getServiceHub().signInitialTransaction(txBuilder); SignedTransaction signedTx = getServiceHub().signInitialTransaction(txBuilder);
// Finalising the transaction. // Creating a session with the other party.
subFlow(new FinalityFlow(signedTx)); FlowSession otherPartySession = initiateFlow(otherParty);
// We finalise the transaction and then send it to the counterparty.
subFlow(new FinalityFlow(signedTx, otherPartySession));
return null; return null;
} }

25
docs/source/example-code/src/main/java/net/corda/docs/java/tutorial/helloworld/IOUFlowResponder.java Normal file
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@ -0,0 +1,25 @@
package net.corda.docs.java.tutorial.helloworld;
import co.paralleluniverse.fibers.Suspendable;
import net.corda.core.flows.*;
@SuppressWarnings("unused")
// DOCSTART 01
// Replace Responder's definition with:
@InitiatedBy(IOUFlow.class)
public class IOUFlowResponder extends FlowLogic<Void> {
private final FlowSession otherPartySession;
public IOUFlowResponder(FlowSession otherPartySession) {
this.otherPartySession = otherPartySession;
}
@Suspendable
@Override
public Void call() throws FlowException {
subFlow(new ReceiveFinalityFlow(otherPartySession));
return null;
}
}
// DOCEND 01

2
docs/source/example-code/src/main/java/net/corda/docs/java/tutorial/twoparty/IOUFlow.java
View File

@ -69,7 +69,7 @@ public class IOUFlow extends FlowLogic<Void> {
signedTx, Arrays.asList(otherPartySession), CollectSignaturesFlow.tracker())); signedTx, Arrays.asList(otherPartySession), CollectSignaturesFlow.tracker()));
// Finalising the transaction. // Finalising the transaction.
subFlow(new FinalityFlow(fullySignedTx)); subFlow(new FinalityFlow(fullySignedTx, otherPartySession));
return null; return null;
// DOCEND 02 // DOCEND 02

16
docs/source/example-code/src/main/java/net/corda/docs/java/tutorial/twoparty/IOUFlowResponder.java
View File

@ -1,15 +1,14 @@
package net.corda.docs.java.tutorial.twoparty; package net.corda.docs.java.tutorial.twoparty;
// DOCSTART 01
// Add these imports:
import co.paralleluniverse.fibers.Suspendable; import co.paralleluniverse.fibers.Suspendable;
import net.corda.core.contracts.ContractState; import net.corda.core.contracts.ContractState;
import net.corda.core.crypto.SecureHash;
import net.corda.core.flows.*; import net.corda.core.flows.*;
import net.corda.core.transactions.SignedTransaction; import net.corda.core.transactions.SignedTransaction;
import net.corda.core.utilities.ProgressTracker;
import static net.corda.core.contracts.ContractsDSL.requireThat; import static net.corda.core.contracts.ContractsDSL.requireThat;
@SuppressWarnings("unused")
// Define IOUFlowResponder: // Define IOUFlowResponder:
@InitiatedBy(IOUFlow.class) @InitiatedBy(IOUFlow.class)
public class IOUFlowResponder extends FlowLogic<Void> { public class IOUFlowResponder extends FlowLogic<Void> {
@ -22,9 +21,10 @@ public class IOUFlowResponder extends FlowLogic<Void> {
@Suspendable @Suspendable
@Override @Override
public Void call() throws FlowException { public Void call() throws FlowException {
// DOCSTART 01
class SignTxFlow extends SignTransactionFlow { class SignTxFlow extends SignTransactionFlow {
private SignTxFlow(FlowSession otherPartySession, ProgressTracker progressTracker) { private SignTxFlow(FlowSession otherPartySession) {
super(otherPartySession, progressTracker); super(otherPartySession);
} }
@Override @Override
@ -39,9 +39,11 @@ public class IOUFlowResponder extends FlowLogic<Void> {
} }
} }
subFlow(new SignTxFlow(otherPartySession, SignTransactionFlow.Companion.tracker())); SecureHash expectedTxId = subFlow(new SignTxFlow(otherPartySession)).getId();
subFlow(new ReceiveFinalityFlow(otherPartySession, expectedTxId));
return null; return null;
// DOCEND 01
} }
} }
// DOCEND 01

91
docs/source/example-code/src/main/kotlin/net/corda/docs/kotlin/FinalityFlowMigration.kt Normal file
View File

@ -0,0 +1,91 @@
@file:Suppress("DEPRECATION", "unused", "UNUSED_PARAMETER")
package net.corda.docs.kotlin
import co.paralleluniverse.fibers.Suspendable
import net.corda.core.flows.*
import net.corda.core.identity.Party
import net.corda.core.transactions.SignedTransaction
private fun dummyTransactionWithParticipant(party: Party): SignedTransaction = TODO()
// DOCSTART SimpleFlowUsingOldApi
class SimpleFlowUsingOldApi(private val counterparty: Party) : FlowLogic<SignedTransaction>() {
@Suspendable
override fun call(): SignedTransaction {
val stx = dummyTransactionWithParticipant(counterparty)
return subFlow(FinalityFlow(stx))
}
}
// DOCEND SimpleFlowUsingOldApi
// DOCSTART SimpleFlowUsingNewApi
// Notice how the flow *must* now be an initiating flow even when it wasn't before.
@InitiatingFlow
class SimpleFlowUsingNewApi(private val counterparty: Party) : FlowLogic<SignedTransaction>() {
@Suspendable
override fun call(): SignedTransaction {
val stx = dummyTransactionWithParticipant(counterparty)
// For each non-local participant in the transaction we must initiate a flow session with them.
val session = initiateFlow(counterparty)
return subFlow(FinalityFlow(stx, session))
}
}
// DOCEND SimpleFlowUsingNewApi
// DOCSTART SimpleNewResponderFlow
// All participants will run this flow to receive and record the finalised transaction into their vault.
@InitiatedBy(SimpleFlowUsingNewApi::class)
class SimpleNewResponderFlow(private val otherSide: FlowSession) : FlowLogic<Unit>() {
@Suspendable
override fun call() {
subFlow(ReceiveFinalityFlow(otherSide))
}
}
// DOCEND SimpleNewResponderFlow
// DOCSTART ExistingInitiatingFlow
// Assuming the previous version of the flow was 1 (the default if none is specified), we increment the version number to 2
// to allow for backwards compatibility with nodes running the old CorDapp.
@InitiatingFlow(version = 2)
class ExistingInitiatingFlow(private val counterparty: Party) : FlowLogic<SignedTransaction>() {
@Suspendable
override fun call(): SignedTransaction {
val partiallySignedTx = dummyTransactionWithParticipant(counterparty)
val session = initiateFlow(counterparty)
val fullySignedTx = subFlow(CollectSignaturesFlow(partiallySignedTx, listOf(session)))
// Determine which version of the flow that other side is using.
return if (session.getCounterpartyFlowInfo().flowVersion == 1) {
// Use the old API if the other side is using the previous version of the flow.
subFlow(FinalityFlow(fullySignedTx))
} else {
// Otherwise they're at least on version 2 and so we can send the finalised transaction on the existing session.
subFlow(FinalityFlow(fullySignedTx, session))
}
}
}
// DOCEND ExistingInitiatingFlow
@InitiatedBy(ExistingInitiatingFlow::class)
class ExistingResponderFlow(private val otherSide: FlowSession) : FlowLogic<Unit>() {
@Suspendable
override fun call() {
val txWeJustSigned = subFlow(object : SignTransactionFlow(otherSide) {
@Suspendable
override fun checkTransaction(stx: SignedTransaction) {
// Do checks here
}
})
// DOCSTART ExistingResponderFlow
if (otherSide.getCounterpartyFlowInfo().flowVersion >= 2) {
// The other side is not using the old CorDapp so call ReceiveFinalityFlow to record the finalised transaction.
// If SignTransactionFlow is used then we can verify the tranaction we receive for recording is the same one
// that was just signed.
subFlow(ReceiveFinalityFlow(otherSide, expectedTxId = txWeJustSigned.id))
} else {
// Otherwise the other side is running the old CorDapp and so we don't need to do anything further. The node
// will automatically record the finalised transaction using the old insecure mechanism.
}
// DOCEND ExistingResponderFlow
}
}

17
docs/source/example-code/src/main/kotlin/net/corda/docs/kotlin/FlowCookbook.kt
View File

@ -568,13 +568,13 @@ class InitiatorFlow(val arg1: Boolean, val arg2: Int, private val counterparty:
// We notarise the transaction and get it recorded in the vault of // We notarise the transaction and get it recorded in the vault of
// the participants of all the transaction's states. // the participants of all the transaction's states.
// DOCSTART 09 // DOCSTART 09
val notarisedTx1: SignedTransaction = subFlow(FinalityFlow(fullySignedTx, FINALISATION.childProgressTracker())) val notarisedTx1: SignedTransaction = subFlow(FinalityFlow(fullySignedTx, listOf(counterpartySession), FINALISATION.childProgressTracker()))
// DOCEND 09 // DOCEND 09
// We can also choose to send it to additional parties who aren't one // We can also choose to send it to additional parties who aren't one
// of the state's participants. // of the state's participants.
// DOCSTART 10 // DOCSTART 10
val additionalParties: Set<Party> = setOf(regulator) val partySessions: List<FlowSession> = listOf(counterpartySession, initiateFlow(regulator))
val notarisedTx2: SignedTransaction = subFlow(FinalityFlow(fullySignedTx, additionalParties, FINALISATION.childProgressTracker())) val notarisedTx2: SignedTransaction = subFlow(FinalityFlow(fullySignedTx, partySessions, FINALISATION.childProgressTracker()))
// DOCEND 10 // DOCEND 10
// DOCSTART FlowSession porting // DOCSTART FlowSession porting
@ -650,7 +650,7 @@ class ResponderFlow(val counterpartySession: FlowSession) : FlowLogic<Unit>() {
} }
} }
subFlow(signTransactionFlow) val idOfTxWeSigned = subFlow(signTransactionFlow).id
// DOCEND 16 // DOCEND 16
/**----------------------------- /**-----------------------------
@ -658,8 +658,11 @@ class ResponderFlow(val counterpartySession: FlowSession) : FlowLogic<Unit>() {
-----------------------------**/ -----------------------------**/
progressTracker.currentStep = FINALISATION progressTracker.currentStep = FINALISATION
// Nothing to do here! As long as some other party calls // As the final step the responder waits to receive the notarised transaction from the sending party
// ``FinalityFlow``, the recording of the transaction on our node // Since it knows the ID of the transaction it just signed, the transaction ID is specified to ensure the correct
// we be handled automatically. // transaction is received and recorded.
// DOCSTART ReceiveFinalityFlow
subFlow(ReceiveFinalityFlow(counterpartySession, expectedTxId = idOfTxWeSigned))
// DOCEND ReceiveFinalityFlow
} }
} }

7
docs/source/example-code/src/main/kotlin/net/corda/docs/kotlin/FxTransactionBuildTutorial.kt
View File

@ -160,7 +160,7 @@ class ForeignExchangeFlow(private val tradeId: String,
} }
// Initiate the standard protocol to notarise and distribute to the involved parties. // Initiate the standard protocol to notarise and distribute to the involved parties.
subFlow(FinalityFlow(allPartySignedTx, setOf(counterparty))) subFlow(FinalityFlow(allPartySignedTx, counterpartySession))
return allPartySignedTx.id return allPartySignedTx.id
} }
@ -239,7 +239,8 @@ class ForeignExchangeRemoteFlow(private val source: FlowSession) : FlowLogic<Uni
// send the other side our signature. // send the other side our signature.
source.send(ourSignature) source.send(ourSignature)
// N.B. The FinalityProtocol will be responsible for Notarising the SignedTransaction
// and broadcasting the result to us. // and then finally stored the finalised transaction into our vault
subFlow(ReceiveFinalityFlow(source))
} }
} }

7
docs/source/example-code/src/main/kotlin/net/corda/docs/kotlin/tutorial/helloworld/IOUFlow.kt
View File

@ -43,8 +43,11 @@ class IOUFlow(val iouValue: Int,
// We sign the transaction. // We sign the transaction.
val signedTx = serviceHub.signInitialTransaction(txBuilder) val signedTx = serviceHub.signInitialTransaction(txBuilder)
// We finalise the transaction. // Creating a session with the other party.
subFlow(FinalityFlow(signedTx)) val otherPartySession = initiateFlow(otherParty)
// We finalise the transaction and then send it to the counterparty.
subFlow(FinalityFlow(signedTx, otherPartySession))
} }
} }
// DOCEND 01 // DOCEND 01

20
docs/source/example-code/src/main/kotlin/net/corda/docs/kotlin/tutorial/helloworld/IOUFlowResponder.kt Normal file
View File

@ -0,0 +1,20 @@
@file:Suppress("unused")
package net.corda.docs.kotlin.tutorial.helloworld
import co.paralleluniverse.fibers.Suspendable
import net.corda.core.flows.FlowLogic
import net.corda.core.flows.FlowSession
import net.corda.core.flows.InitiatedBy
import net.corda.core.flows.ReceiveFinalityFlow
// DOCSTART 01
// Replace Responder's definition with:
@InitiatedBy(IOUFlow::class)
class IOUFlowResponder(private val otherPartySession: FlowSession) : FlowLogic<Unit>() {
@Suspendable
override fun call() {
subFlow(ReceiveFinalityFlow(otherPartySession))
}
}
// DOCEND 01

2
docs/source/example-code/src/main/kotlin/net/corda/docs/kotlin/tutorial/twoparty/IOUFlow.kt
View File

@ -52,7 +52,7 @@ class IOUFlow(val iouValue: Int,
val fullySignedTx = subFlow(CollectSignaturesFlow(signedTx, listOf(otherPartySession), CollectSignaturesFlow.tracker())) val fullySignedTx = subFlow(CollectSignaturesFlow(signedTx, listOf(otherPartySession), CollectSignaturesFlow.tracker()))
// Finalising the transaction. // Finalising the transaction.
subFlow(FinalityFlow(fullySignedTx)) subFlow(FinalityFlow(fullySignedTx, otherPartySession))
// DOCEND 02 // DOCEND 02
} }
} }

9
docs/source/example-code/src/main/kotlin/net/corda/docs/kotlin/tutorial/twoparty/IOUFlowResponder.kt
View File

@ -17,7 +17,8 @@ import net.corda.core.transactions.SignedTransaction
class IOUFlowResponder(val otherPartySession: FlowSession) : FlowLogic<Unit>() { class IOUFlowResponder(val otherPartySession: FlowSession) : FlowLogic<Unit>() {
@Suspendable @Suspendable
override fun call() { override fun call() {
val signTransactionFlow = object : SignTransactionFlow(otherPartySession, SignTransactionFlow.tracker()) { // DOCSTART 01
val signTransactionFlow = object : SignTransactionFlow(otherPartySession) {
override fun checkTransaction(stx: SignedTransaction) = requireThat { override fun checkTransaction(stx: SignedTransaction) = requireThat {
val output = stx.tx.outputs.single().data val output = stx.tx.outputs.single().data
"This must be an IOU transaction." using (output is IOUState) "This must be an IOU transaction." using (output is IOUState)
@ -26,7 +27,9 @@ class IOUFlowResponder(val otherPartySession: FlowSession) : FlowLogic<Unit>() {
} }
} }
subFlow(signTransactionFlow) val expectedTxId = subFlow(signTransactionFlow).id
subFlow(ReceiveFinalityFlow(otherPartySession, expectedTxId))
// DOCEND 01
} }
} }
// DOCEND 01

27
docs/source/example-code/src/main/kotlin/net/corda/docs/kotlin/WorkflowTransactionBuildTutorial.kt → docs/source/example-code/src/main/kotlin/net/corda/docs/kotlin/txbuild/WorkflowTransactionBuildTutorial.kt
View File

@ -1,6 +1,6 @@
@file:Suppress("unused") @file:Suppress("unused")
package net.corda.docs.kotlin package net.corda.docs.kotlin.txbuild
import co.paralleluniverse.fibers.Suspendable import co.paralleluniverse.fibers.Suspendable
import net.corda.core.contracts.* import net.corda.core.contracts.*
@ -25,7 +25,7 @@ enum class WorkflowState {
REJECTED REJECTED
} }
const val TRADE_APPROVAL_PROGRAM_ID = "net.corda.docs.kotlin.TradeApprovalContract" const val TRADE_APPROVAL_PROGRAM_ID = "net.corda.docs.kotlin.txbuild.TradeApprovalContract"
/** /**
* Minimal contract to encode a simple workflow with one initial state and two possible eventual states. * Minimal contract to encode a simple workflow with one initial state and two possible eventual states.
@ -93,6 +93,7 @@ data class TradeApprovalContract(val blank: Unit? = null) : Contract {
* The protocol then sends a copy to the other node. We don't require the other party to sign * The protocol then sends a copy to the other node. We don't require the other party to sign
* as their approval/rejection is to follow. * as their approval/rejection is to follow.
*/ */
@InitiatingFlow
class SubmitTradeApprovalFlow(private val tradeId: String, class SubmitTradeApprovalFlow(private val tradeId: String,
private val counterparty: Party) : FlowLogic<StateAndRef<TradeApprovalContract.State>>() { private val counterparty: Party) : FlowLogic<StateAndRef<TradeApprovalContract.State>>() {
@Suspendable @Suspendable
@ -109,12 +110,20 @@ class SubmitTradeApprovalFlow(private val tradeId: String,
// We can automatically sign as there is no untrusted data. // We can automatically sign as there is no untrusted data.
val signedTx = serviceHub.signInitialTransaction(tx) val signedTx = serviceHub.signInitialTransaction(tx)
// Notarise and distribute. // Notarise and distribute.
subFlow(FinalityFlow(signedTx, setOf(counterparty))) subFlow(FinalityFlow(signedTx, initiateFlow(counterparty)))
// Return the initial state // Return the initial state
return signedTx.tx.outRef(0) return signedTx.tx.outRef(0)
} }
} }
@InitiatedBy(SubmitTradeApprovalFlow::class)
class SubmitTradeApprovalResponderFlow(private val otherSide: FlowSession) : FlowLogic<Unit>() {
@Suspendable
override fun call() {
subFlow(ReceiveFinalityFlow(otherSide))
}
}
/** /**
* Simple flow to complete a proposal submitted by another party and ensure both nodes * Simple flow to complete a proposal submitted by another party and ensure both nodes
* end up with a fully signed copy of the state either as APPROVED, or REJECTED * end up with a fully signed copy of the state either as APPROVED, or REJECTED
@ -174,8 +183,8 @@ class SubmitCompletionFlow(private val ref: StateRef, private val verdict: Workf
val selfSignedTx = serviceHub.signInitialTransaction(tx) val selfSignedTx = serviceHub.signInitialTransaction(tx)
//DOCEND 2 //DOCEND 2
// Send the signed transaction to the originator and await their signature to confirm // Send the signed transaction to the originator and await their signature to confirm
val session = initiateFlow(newState.source) val sourceSession = initiateFlow(newState.source)
val allPartySignedTx = session.sendAndReceive<TransactionSignature>(selfSignedTx).unwrap { val allPartySignedTx = sourceSession.sendAndReceive<TransactionSignature>(selfSignedTx).unwrap {
// Add their signature to our unmodified transaction. To check they signed the same tx. // Add their signature to our unmodified transaction. To check they signed the same tx.
val agreedTx = selfSignedTx + it val agreedTx = selfSignedTx + it
// Receive back their signature and confirm that it is for an unmodified transaction // Receive back their signature and confirm that it is for an unmodified transaction
@ -189,7 +198,7 @@ class SubmitCompletionFlow(private val ref: StateRef, private val verdict: Workf
} }
// DOCSTART 4 // DOCSTART 4
// Notarise and distribute the completed transaction. // Notarise and distribute the completed transaction.
subFlow(FinalityFlow(allPartySignedTx, setOf(newState.source))) subFlow(FinalityFlow(allPartySignedTx, sourceSession))
// DOCEND 4 // DOCEND 4
// Return back the details of the completed state/transaction. // Return back the details of the completed state/transaction.
return allPartySignedTx.tx.outRef(0) return allPartySignedTx.tx.outRef(0)
@ -233,7 +242,7 @@ class RecordCompletionFlow(private val sourceSession: FlowSession) : FlowLogic<U
val ourSignature = serviceHub.createSignature(completeTx) val ourSignature = serviceHub.createSignature(completeTx)
// Send our signature to the other party. // Send our signature to the other party.
sourceSession.send(ourSignature) sourceSession.send(ourSignature)
// N.B. The FinalityProtocol will be responsible for Notarising the SignedTransaction
// and broadcasting the result to us. subFlow(ReceiveFinalityFlow(sourceSession))
} }
} }

3
docs/source/example-code/src/main/kotlin/net/corda/docs/kotlin/CustomVaultQuery.kt → docs/source/example-code/src/main/kotlin/net/corda/docs/kotlin/vault/CustomVaultQuery.kt
View File

@ -1,6 +1,6 @@
@file:Suppress("unused", "MemberVisibilityCanBePrivate") @file:Suppress("unused", "MemberVisibilityCanBePrivate")
package net.corda.docs.kotlin package net.corda.docs.kotlin.vault
import co.paralleluniverse.fibers.Suspendable import co.paralleluniverse.fibers.Suspendable
import net.corda.core.contracts.Amount import net.corda.core.contracts.Amount
@ -68,7 +68,6 @@ object CustomVaultQuery {
* This is a slightly modified version of the IssuerFlow, which uses a 3rd party custom query to * This is a slightly modified version of the IssuerFlow, which uses a 3rd party custom query to
* retrieve a list of currencies and top up amounts to be used in the issuance. * retrieve a list of currencies and top up amounts to be used in the issuance.
*/ */
object TopupIssuerFlow { object TopupIssuerFlow {
@CordaSerializable @CordaSerializable
data class TopupRequest(val issueToParty: Party, data class TopupRequest(val issueToParty: Party,

5
docs/source/example-code/src/test/kotlin/net/corda/docs/kotlin/WorkflowTransactionBuildTutorialTest.kt → docs/source/example-code/src/test/kotlin/net/corda/docs/kotlin/txbuild/WorkflowTransactionBuildTutorialTest.kt
View File

@ -1,9 +1,10 @@
package net.corda.docs.kotlin package net.corda.docs.kotlin.txbuild
import net.corda.core.contracts.LinearState import net.corda.core.contracts.LinearState
import net.corda.core.contracts.StateAndRef import net.corda.core.contracts.StateAndRef
import net.corda.core.contracts.UniqueIdentifier import net.corda.core.contracts.UniqueIdentifier
import net.corda.core.identity.Party import net.corda.core.identity.Party
import net.corda.core.internal.packageName
import net.corda.core.node.ServiceHub import net.corda.core.node.ServiceHub
import net.corda.core.node.services.queryBy import net.corda.core.node.services.queryBy
import net.corda.core.node.services.vault.QueryCriteria import net.corda.core.node.services.vault.QueryCriteria
@ -33,7 +34,7 @@ class WorkflowTransactionBuildTutorialTest {
@Before @Before
fun setup() { fun setup() {
mockNet = MockNetwork(threadPerNode = true, cordappPackages = listOf("net.corda.docs")) mockNet = MockNetwork(threadPerNode = true, cordappPackages = listOf(javaClass.packageName))
aliceNode = mockNet.createPartyNode(ALICE_NAME) aliceNode = mockNet.createPartyNode(ALICE_NAME)
bobNode = mockNet.createPartyNode(BOB_NAME) bobNode = mockNet.createPartyNode(BOB_NAME)
alice = aliceNode.services.myInfo.identityFromX500Name(ALICE_NAME) alice = aliceNode.services.myInfo.identityFromX500Name(ALICE_NAME)

19
docs/source/example-code/src/test/kotlin/net/corda/docs/kotlin/CustomVaultQueryTest.kt → docs/source/example-code/src/test/kotlin/net/corda/docs/kotlin/vault/CustomVaultQueryTest.kt
View File

@ -1,13 +1,14 @@
package net.corda.docs.kotlin package net.corda.docs.kotlin.vault
import net.corda.core.contracts.Amount import net.corda.core.contracts.Amount
import net.corda.core.contracts.ContractState import net.corda.core.contracts.ContractState
import net.corda.core.identity.Party import net.corda.core.identity.Party
import net.corda.core.internal.packageName
import net.corda.core.node.services.queryBy import net.corda.core.node.services.queryBy
import net.corda.core.node.services.vault.* import net.corda.core.node.services.vault.*
import net.corda.core.utilities.OpaqueBytes import net.corda.core.utilities.OpaqueBytes
import net.corda.core.utilities.getOrThrow import net.corda.core.utilities.getOrThrow
import net.corda.docs.java.tutorial.helloworld.IOUFlow import net.corda.docs.kotlin.tutorial.helloworld.IOUFlow
import net.corda.finance.* import net.corda.finance.*
import net.corda.finance.contracts.getCashBalances import net.corda.finance.contracts.getCashBalances
import net.corda.finance.flows.CashIssueFlow import net.corda.finance.flows.CashIssueFlow
@ -17,7 +18,7 @@ import net.corda.testing.node.MockNetwork
import net.corda.testing.node.StartedMockNode import net.corda.testing.node.StartedMockNode
import org.assertj.core.api.Assertions.assertThatCode import org.assertj.core.api.Assertions.assertThatCode
import org.junit.After import org.junit.After
import org.junit.Assert import org.junit.Assert.assertEquals
import org.junit.Before import org.junit.Before
import org.junit.Test import org.junit.Test
import java.util.* import java.util.*
@ -30,7 +31,7 @@ class CustomVaultQueryTest {
@Before @Before
fun setup() { fun setup() {
mockNet = MockNetwork(threadPerNode = true, cordappPackages = listOf("net.corda.finance", "net.corda.docs", "com.template")) mockNet = MockNetwork(threadPerNode = true, cordappPackages = listOf("net.corda.finance", IOUFlow::class.packageName, javaClass.packageName, "com.template"))
nodeA = mockNet.createPartyNode() nodeA = mockNet.createPartyNode()
nodeB = mockNet.createPartyNode() nodeB = mockNet.createPartyNode()
notary = mockNet.defaultNotaryIdentity notary = mockNet.defaultNotaryIdentity
@ -43,7 +44,6 @@ class CustomVaultQueryTest {
@Test @Test
fun `query by max recorded time`() { fun `query by max recorded time`() {
nodeA.startFlow(IOUFlow(1000, nodeB.info.singleIdentity())).getOrThrow() nodeA.startFlow(IOUFlow(1000, nodeB.info.singleIdentity())).getOrThrow()
nodeA.startFlow(IOUFlow(500, nodeB.info.singleIdentity())).getOrThrow() nodeA.startFlow(IOUFlow(500, nodeB.info.singleIdentity())).getOrThrow()
@ -69,9 +69,9 @@ class CustomVaultQueryTest {
topUpCurrencies() topUpCurrencies()
val (cashBalancesAfterTopup, _) = getBalances() val (cashBalancesAfterTopup, _) = getBalances()
Assert.assertEquals(cashBalancesOriginal[GBP]?.times(2), cashBalancesAfterTopup[GBP]) assertEquals(cashBalancesOriginal[GBP]?.times(2), cashBalancesAfterTopup[GBP])
Assert.assertEquals(cashBalancesOriginal[USD]?.times(2) , cashBalancesAfterTopup[USD]) assertEquals(cashBalancesOriginal[USD]?.times(2) , cashBalancesAfterTopup[USD])
Assert.assertEquals(cashBalancesOriginal[CHF]?.times( 2), cashBalancesAfterTopup[CHF]) assertEquals(cashBalancesOriginal[CHF]?.times( 2), cashBalancesAfterTopup[CHF])
} }
private fun issueCashForCurrency(amountToIssue: Amount<Currency>) { private fun issueCashForCurrency(amountToIssue: Amount<Currency>) {
@ -86,7 +86,8 @@ class CustomVaultQueryTest {
nodeA.info.singleIdentity(), nodeA.info.singleIdentity(),
OpaqueBytes.of(0x01), OpaqueBytes.of(0x01),
nodeA.info.singleIdentity(), nodeA.info.singleIdentity(),
notary)).getOrThrow() notary)
).getOrThrow()
} }
private fun getBalances(): Pair<Map<Currency, Amount<Currency>>, Map<Currency, Amount<Currency>>> { private fun getBalances(): Pair<Map<Currency, Amount<Currency>>, Map<Currency, Amount<Currency>>> {

12
docs/source/flow-state-machines.rst
View File

@ -227,8 +227,8 @@ Next, we call another subflow called ``SignTransactionFlow``. ``SignTransactionF
The transaction then needs to be finalized. This is the the process of sending the transaction to a notary to assert The transaction then needs to be finalized. This is the the process of sending the transaction to a notary to assert
(with another signature) that the time-window in the transaction (if any) is valid and there are no double spends. (with another signature) that the time-window in the transaction (if any) is valid and there are no double spends.
In this flow, finalization is handled by the buyer, so we just wait for the signed transaction to appear in our In this flow, finalization is handled by the buyer, we just wait for them to send it to us. It will have the same ID as
transaction storage. It will have the same ID as the one we started with but more signatures. the one we started with but more signatures.
Implementing the buyer Implementing the buyer
---------------------- ----------------------
@ -314,9 +314,11 @@ On the buyer side, we use ``FinalityFlow`` to finalise the transaction. It will:
* Record the transaction in the local vault, if it is relevant (i.e. involves the owner of the node). * Record the transaction in the local vault, if it is relevant (i.e. involves the owner of the node).
* Send the fully signed transaction to the other participants for recording as well. * Send the fully signed transaction to the other participants for recording as well.
.. warning:: If the seller stops before sending the finalised transaction to the buyer, the seller is left with a On the seller side we use ``ReceiveFinalityFlow`` to receive and record the finalised transaction.
valid transaction but the buyer isn't, so they can't spend the asset they just purchased! This sort of thing is not
always a risk (as the seller may not gain anything from that sort of behaviour except a lawsuit), but if it is, a future .. warning:: If the buyer stops before sending the finalised transaction to the seller, the buyer is left with a
valid transaction but the seller isn't, so they don't get the cash! This sort of thing is not
always a risk (as the buyer may not gain anything from that sort of behaviour except a lawsuit), but if it is, a future
version of the platform will allow you to ask the notary to send you the transaction as well, in case your counterparty version of the platform will allow you to ask the notary to send you the transaction as well, in case your counterparty
does not. This is not the default because it reveals more private info to the notary. does not. This is not the default because it reveals more private info to the notary.

54
docs/source/hello-world-flow.rst
View File

@ -21,11 +21,11 @@ require the following steps:
1. Building the transaction proposal for the issuance of a new IOU onto a ledger 1. Building the transaction proposal for the issuance of a new IOU onto a ledger
2. Signing the transaction proposal 2. Signing the transaction proposal
3. Recording the transaction 3. Recording the transaction and sending it to the IOU's borrower so that they can record it too
4. Sending the transaction to the IOU's borrower so that they can record it too
At this stage, we do not require the borrower to approve and sign IOU issuance transactions. We will be able to impose We also need the borrower to receive the transaction and record it for itself. At this stage, we do not require the borrower
this requirement when we look at contracts in the next tutorial. to approve and sign IOU issuance transactions. We will be able to impose this requirement when we look at contracts in the
next tutorial.
Subflows Subflows
^^^^^^^^ ^^^^^^^^
@ -34,13 +34,11 @@ forcing each developer to reimplement their own logic to handle these tasks, Cor
to handle these tasks. We call these flows that are invoked in the context of a larger flow to handle a repeatable task to handle these tasks. We call these flows that are invoked in the context of a larger flow to handle a repeatable task
*subflows*. *subflows*.
In our case, we can automate steps 3 and 4 of the IOU issuance flow using ``FinalityFlow``.
FlowLogic FlowLogic
--------- ---------
All flows must subclass ``FlowLogic``. You then define the steps taken by the flow by overriding ``FlowLogic.call``. All flows must subclass ``FlowLogic``. You then define the steps taken by the flow by overriding ``FlowLogic.call``.
Let's define our ``IOUFlow``. Delete the existing ``Responder`` flow. Then replace the definition of ``Initiator`` with the following: Let's define our ``IOUFlow``. Replace the definition of ``Initiator`` with the following:
.. container:: codeset .. container:: codeset
@ -54,8 +52,9 @@ Let's define our ``IOUFlow``. Delete the existing ``Responder`` flow. Then repla
:start-after: DOCSTART 01 :start-after: DOCSTART 01
:end-before: DOCEND 01 :end-before: DOCEND 01
If you're following along in Java, you'll also need to rename ``Initiator.java`` to ``IOUFlow.java``. Let's walk If you're following along in Java, you'll also need to rename ``Initiator.java`` to ``IOUFlow.java``.
through this code step-by-step.
Let's walk through this code step-by-step.
We've defined our own ``FlowLogic`` subclass that overrides ``FlowLogic.call``. ``FlowLogic.call`` has a return type We've defined our own ``FlowLogic`` subclass that overrides ``FlowLogic.call``. ``FlowLogic.call`` has a return type
that must match the type parameter passed to ``FlowLogic`` - this is type returned by running the flow. that must match the type parameter passed to ``FlowLogic`` - this is type returned by running the flow.
@ -73,7 +72,7 @@ annotation out will lead to some very weird error messages!
There are also a few more annotations, on the ``FlowLogic`` subclass itself: There are also a few more annotations, on the ``FlowLogic`` subclass itself:
* ``@InitiatingFlow`` means that this flow is part of a flow pair and that it triggers the other side to run the * ``@InitiatingFlow`` means that this flow is part of a flow pair and that it triggers the other side to run the
the counterpart flow. the counterpart flow (which in our case is the ``IOUFlowResponder`` defined below).
* ``@StartableByRPC`` allows the node owner to start this flow via an RPC call * ``@StartableByRPC`` allows the node owner to start this flow via an RPC call
Let's walk through the steps of ``FlowLogic.call`` itself. This is where we actually describe the procedure for Let's walk through the steps of ``FlowLogic.call`` itself. This is where we actually describe the procedure for
@ -145,15 +144,36 @@ We sign the transaction using ``ServiceHub.signInitialTransaction``, which retur
Finalising the transaction Finalising the transaction
^^^^^^^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^
We now have a valid signed transaction. All that's left to do is to have it recorded by all the relevant parties. By We now have a valid signed transaction. All that's left to do is to get the notary to sign it, have that recorded
doing so, it will become a permanent part of the ledger. As discussed, we'll handle this process automatically using a locally and then send it to all the relevant parties. Once that happens the transaction will become a permanent part of the
built-in flow called ``FinalityFlow``. ``FinalityFlow`` completely automates the process of: ledger. We use ``FinalityFlow`` which does all of this for the lender.
* Notarising the transaction if required (i.e. if the transaction contains inputs and/or a time-window) For the borrower to receive the transaction they just need a flow that responds to the seller's.
* Recording it in our vault
* Sending it to the other participants (i.e. the lender) for them to record as well Creating the borrower's flow
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
The borrower has to use ``ReceiveFinalityFlow`` in order to receive and record the transaction; it needs to respond to
the lender's flow. Let's do that by replacing ``Responder`` from the template with the following:
.. container:: codeset
.. literalinclude:: example-code/src/main/kotlin/net/corda/docs/kotlin/tutorial/helloworld/IOUFlowResponder.kt
:language: kotlin
:start-after: DOCSTART 01
:end-before: DOCEND 01
.. literalinclude:: example-code/src/main/java/net/corda/docs/java/tutorial/helloworld/IOUFlowResponder.java
:language: java
:start-after: DOCSTART 01
:end-before: DOCEND 01
As with the ``IOUFlow``, our ``IOUFlowResponder`` flow is a ``FlowLogic`` subclass where we've overridden ``FlowLogic.call``.
The flow is annotated with ``InitiatedBy(IOUFlow.class)``, which means that your node will invoke
``IOUFlowResponder.call`` when it receives a message from a instance of ``Initiator`` running on another node. This message
will be the finalised transaction which will be recorded in the borrower's vault.
Progress so far Progress so far
--------------- ---------------
Our flow, and our CorDapp, are now ready! We have now defined a flow that we can start on our node to completely Our flow, and our CorDapp, are now ready! We have now defined a flow that we can start on our node to completely
automate the process of issuing an IOU onto the ledger. All that's left is to spin up some nodes and test our CorDapp. automate the process of issuing an IOU onto the ledger. All that's left is to spin up some nodes and test our CorDapp.

30
docs/source/tut-two-party-flow.rst
View File

@ -65,13 +65,10 @@ transaction proposal before finalising it by adding our signature.
Requesting the borrower's signature Requesting the borrower's signature
----------------------------------- -----------------------------------
We now need to communicate with the borrower to request their signature over the transaction. Whenever you want to Previously we wrote a responder flow for the borrower in order to receive the finalised transaction from the lender.
communicate with another party in the context of a flow, you first need to establish a flow session with them. If the We use this same flow to first request their signature over the transaction.
counterparty has a ``FlowLogic`` registered to respond to the ``FlowLogic`` initiating the session, a session will be
established. All communication between the two ``FlowLogic`` instances will then place as part of this session.
Once we have a session with the borrower, we gather the borrower's signature using ``CollectSignaturesFlow``, which We gather the borrower's signature using ``CollectSignaturesFlow``, which takes:
takes:
* A transaction signed by the flow initiator * A transaction signed by the flow initiator
* A list of flow-sessions between the flow initiator and the required signers * A list of flow-sessions between the flow initiator and the required signers
@ -80,11 +77,11 @@ And returns a transaction signed by all the required signers.
We can then pass this fully-signed transaction into ``FinalityFlow``. We can then pass this fully-signed transaction into ``FinalityFlow``.
Creating the borrower's flow Updating the borrower's flow
---------------------------- ----------------------------
On the lender's side, we used ``CollectSignaturesFlow`` to automate the collection of signatures. To allow the lender On the lender's side, we used ``CollectSignaturesFlow`` to automate the collection of signatures. To allow the borrower
to respond, we need to write a response flow as well. In a new ``IOUFlowResponder.java`` file in Java, or within the to respond, we need to update its responder flow to first receive the partially signed transaction for signing. Update
``App.kt`` file in Kotlin, add the following class: ``IOUFlowResponder.call`` to be the following:
.. container:: codeset .. container:: codeset
@ -92,19 +89,13 @@ to respond, we need to write a response flow as well. In a new ``IOUFlowResponde
:language: kotlin :language: kotlin
:start-after: DOCSTART 01 :start-after: DOCSTART 01
:end-before: DOCEND 01 :end-before: DOCEND 01
:dedent: 8
.. literalinclude:: example-code/src/main/java/net/corda/docs/java/tutorial/twoparty/IOUFlowResponder.java .. literalinclude:: example-code/src/main/java/net/corda/docs/java/tutorial/twoparty/IOUFlowResponder.java
:language: java :language: java
:start-after: DOCSTART 01 :start-after: DOCSTART 01
:end-before: DOCEND 01 :end-before: DOCEND 01
:dedent: 8
As with the ``IOUFlow``, our ``IOUFlowResponder`` flow is a ``FlowLogic`` subclass where we've overridden
``FlowLogic.call``.
The flow is annotated with ``InitiatedBy(IOUFlow.class)``, which means that your node will invoke
``IOUFlowResponder.call`` when it receives a message from a instance of ``Initiator`` running on another node. What
will this message from the ``IOUFlow`` be? If we look at the definition of ``CollectSignaturesFlow``, we can see that
we'll be sent a ``SignedTransaction``, and are expected to send back our signature over that transaction.
We could write our own flow to handle this process. However, there is also a pre-defined flow called We could write our own flow to handle this process. However, there is also a pre-defined flow called
``SignTransactionFlow`` that can handle the process automatically. The only catch is that ``SignTransactionFlow`` is an ``SignTransactionFlow`` that can handle the process automatically. The only catch is that ``SignTransactionFlow`` is an
@ -128,6 +119,9 @@ signatures are contractually valid.
Once we've defined the ``SignTransactionFlow`` subclass, we invoke it using ``FlowLogic.subFlow``, and the Once we've defined the ``SignTransactionFlow`` subclass, we invoke it using ``FlowLogic.subFlow``, and the
communication with the borrower's and the lender's flow is conducted automatically. communication with the borrower's and the lender's flow is conducted automatically.
``SignedTransactionFlow`` returns the newly signed transaction. We pass in the transaction's ID to ``ReceiveFinalityFlow``
to ensure we are recording the correct notarised transaction from the lender.
Conclusion Conclusion
---------- ----------
We have now updated our flow to verify the transaction and gather the lender's signature, in line with the constraints We have now updated our flow to verify the transaction and gather the lender's signature, in line with the constraints

2
docs/source/tut-two-party-introduction.rst
View File

@ -7,7 +7,7 @@ In the Hello, World tutorial, we built a CorDapp allowing us to model IOUs on le
elements: elements:
* An ``IOUState``, representing IOUs on the blockchain * An ``IOUState``, representing IOUs on the blockchain
* An ``IOUFlow``, orchestrating the process of agreeing the creation of an IOU on-ledger * An ``IOUFlow`` and ``IOFlowResponder`` flow pair, orchestrating the process of agreeing the creation of an IOU on-ledger
However, our CorDapp did not impose any constraints on the evolution of IOUs on the blockchain over time. Anyone was free However, our CorDapp did not impose any constraints on the evolution of IOUs on the blockchain over time. Anyone was free
to create IOUs of any value, between any party. to create IOUs of any value, between any party.

14
docs/source/tutorial-building-transactions.rst
View File

@ -81,12 +81,10 @@ To give a few more specific details consider two simplified real world
scenarios. First, a basic foreign exchange cash transaction. This scenarios. First, a basic foreign exchange cash transaction. This
transaction needs to locate a set of funds to exchange. A flow transaction needs to locate a set of funds to exchange. A flow
modelling this is implemented in ``FxTransactionBuildTutorial.kt`` modelling this is implemented in ``FxTransactionBuildTutorial.kt``
(see ``docs/source/example-code/src/main/kotlin/net/corda/docs/kotlin/FxTransactionBuildTutorial.kt`` in the (in the `main Corda repo <https://github.com/corda/corda>`_).
`main Corda repo <https://github.com/corda/corda>`_).
Second, a simple business model in which parties manually accept or Second, a simple business model in which parties manually accept or
reject each other's trade proposals, which is implemented in reject each other's trade proposals, which is implemented in
``WorkflowTransactionBuildTutorial.kt`` (see ``WorkflowTransactionBuildTutorial.kt`` (in the
``docs/source/example-code/src/main/kotlin/net/corda/docs/kotlin/WorkflowTransactionBuildTutorial.kt`` in the
`main Corda repo <https://github.com/corda/corda>`_). To run and explore these `main Corda repo <https://github.com/corda/corda>`_). To run and explore these
examples using the IntelliJ IDE one can run/step through the respective unit examples using the IntelliJ IDE one can run/step through the respective unit
tests in ``FxTransactionBuildTutorialTest.kt`` and tests in ``FxTransactionBuildTutorialTest.kt`` and
@ -148,7 +146,7 @@ parameters to the flow to identify the states being operated upon. Thus
code to gather the latest input state for a given ``StateRef`` would use code to gather the latest input state for a given ``StateRef`` would use
the ``VaultService`` as follows: the ``VaultService`` as follows:
.. literalinclude:: example-code/src/main/kotlin/net/corda/docs/kotlin/WorkflowTransactionBuildTutorial.kt .. literalinclude:: example-code/src/main/kotlin/net/corda/docs/kotlin/txbuild/WorkflowTransactionBuildTutorial.kt
:language: kotlin :language: kotlin
:start-after: DOCSTART 1 :start-after: DOCSTART 1
:end-before: DOCEND 1 :end-before: DOCEND 1
@ -221,7 +219,7 @@ and convert it into a ``SignedTransaction``.
Examples of this process are: Examples of this process are:
.. literalinclude:: example-code/src/main/kotlin/net/corda/docs/kotlin/WorkflowTransactionBuildTutorial.kt .. literalinclude:: example-code/src/main/kotlin/net/corda/docs/kotlin/txbuild/WorkflowTransactionBuildTutorial.kt
:language: kotlin :language: kotlin
:start-after: DOCSTART 2 :start-after: DOCSTART 2
:end-before: DOCEND 2 :end-before: DOCEND 2
@ -260,7 +258,7 @@ context. For example, the flow may need to check that the parties are the
right ones, or that the ``Command`` present on the transaction is as right ones, or that the ``Command`` present on the transaction is as
expected for this specific flow. An example of this from the demo code is: expected for this specific flow. An example of this from the demo code is:
.. literalinclude:: example-code/src/main/kotlin/net/corda/docs/kotlin/WorkflowTransactionBuildTutorial.kt .. literalinclude:: example-code/src/main/kotlin/net/corda/docs/kotlin/txbuild/WorkflowTransactionBuildTutorial.kt
:language: kotlin :language: kotlin
:start-after: DOCSTART 3 :start-after: DOCSTART 3
:end-before: DOCEND 3 :end-before: DOCEND 3
@ -277,7 +275,7 @@ Once all the signatures are applied to the ``SignedTransaction``, the
final steps are notarisation and ensuring that all nodes record the fully-signed transaction. The final steps are notarisation and ensuring that all nodes record the fully-signed transaction. The
code for this is standardised in the ``FinalityFlow``: code for this is standardised in the ``FinalityFlow``:
.. literalinclude:: example-code/src/main/kotlin/net/corda/docs/kotlin/WorkflowTransactionBuildTutorial.kt .. literalinclude:: example-code/src/main/kotlin/net/corda/docs/kotlin/txbuild/WorkflowTransactionBuildTutorial.kt
:language: kotlin :language: kotlin
:start-after: DOCSTART 4 :start-after: DOCSTART 4
:end-before: DOCEND 4 :end-before: DOCEND 4

24
docs/source/tutorial-integration-testing.rst
View File

@ -21,13 +21,13 @@ a local network where all the nodes see each other and provides safe shutting do
.. container:: codeset .. container:: codeset
.. literalinclude:: example-code/src/integration-test/kotlin/net/corda/docs/KotlinIntegrationTestingTutorial.kt .. literalinclude:: example-code/src/integration-test/kotlin/net/corda/docs/kotlin/tutorial/test/KotlinIntegrationTestingTutorial.kt
:language: kotlin :language: kotlin
:start-after: START 1 :start-after: START 1
:end-before: END 1 :end-before: END 1
:dedent: 8 :dedent: 8
.. literalinclude:: example-code/src/integration-test/java/net/corda/docs/JavaIntegrationTestingTutorial.java .. literalinclude:: example-code/src/integration-test/java/net/corda/docs/java/tutorial/test/JavaIntegrationTestingTutorial.java
:language: java :language: java
:start-after: START 1 :start-after: START 1
:end-before: END 1 :end-before: END 1
@ -49,13 +49,13 @@ the information returned; their respective ``NodeHandles`` s.
.. container:: codeset .. container:: codeset
.. literalinclude:: example-code/src/integration-test/kotlin/net/corda/docs/KotlinIntegrationTestingTutorial.kt .. literalinclude:: example-code/src/integration-test/kotlin/net/corda/docs/kotlin/tutorial/test/KotlinIntegrationTestingTutorial.kt
:language: kotlin :language: kotlin
:start-after: START 2 :start-after: START 2
:end-before: END 2 :end-before: END 2
:dedent: 12 :dedent: 12
.. literalinclude:: example-code/src/integration-test/java/net/corda/docs/JavaIntegrationTestingTutorial.java .. literalinclude:: example-code/src/integration-test/java/net/corda/docs/java/tutorial/test/JavaIntegrationTestingTutorial.java
:language: java :language: java
:start-after: START 2 :start-after: START 2
:end-before: END 2 :end-before: END 2
@ -66,13 +66,13 @@ us to start flows and query state.
.. container:: codeset .. container:: codeset
.. literalinclude:: example-code/src/integration-test/kotlin/net/corda/docs/KotlinIntegrationTestingTutorial.kt .. literalinclude:: example-code/src/integration-test/kotlin/net/corda/docs/kotlin/tutorial/test/KotlinIntegrationTestingTutorial.kt
:language: kotlin :language: kotlin
:start-after: START 3 :start-after: START 3
:end-before: END 3 :end-before: END 3
:dedent: 12 :dedent: 12
.. literalinclude:: example-code/src/integration-test/java/net/corda/docs/JavaIntegrationTestingTutorial.java .. literalinclude:: example-code/src/integration-test/java/net/corda/docs/java/tutorial/test/JavaIntegrationTestingTutorial.java
:language: java :language: java
:start-after: START 3 :start-after: START 3
:end-before: END 3 :end-before: END 3
@ -84,13 +84,13 @@ Now that we're all set up we can finally get some cash action going!
.. container:: codeset .. container:: codeset
.. literalinclude:: example-code/src/integration-test/kotlin/net/corda/docs/KotlinIntegrationTestingTutorial.kt .. literalinclude:: example-code/src/integration-test/kotlin/net/corda/docs/kotlin/tutorial/test/KotlinIntegrationTestingTutorial.kt
:language: kotlin :language: kotlin
:start-after: START 4 :start-after: START 4
:end-before: END 4 :end-before: END 4
:dedent: 12 :dedent: 12
.. literalinclude:: example-code/src/integration-test/java/net/corda/docs/JavaIntegrationTestingTutorial.java .. literalinclude:: example-code/src/integration-test/java/net/corda/docs/java/tutorial/test/JavaIntegrationTestingTutorial.java
:language: java :language: java
:start-after: START 4 :start-after: START 4
:end-before: END 4 :end-before: END 4
@ -106,13 +106,13 @@ is asserting.
.. container:: codeset .. container:: codeset
.. literalinclude:: example-code/src/integration-test/kotlin/net/corda/docs/KotlinIntegrationTestingTutorial.kt .. literalinclude:: example-code/src/integration-test/kotlin/net/corda/docs/kotlin/tutorial/test/KotlinIntegrationTestingTutorial.kt
:language: kotlin :language: kotlin
:start-after: START 5 :start-after: START 5
:end-before: END 5 :end-before: END 5
:dedent: 12 :dedent: 12
.. literalinclude:: example-code/src/integration-test/java/net/corda/docs/JavaIntegrationTestingTutorial.java .. literalinclude:: example-code/src/integration-test/java/net/corda/docs/java/tutorial/test/JavaIntegrationTestingTutorial.java
:language: java :language: java
:start-after: START 5 :start-after: START 5
:end-before: END 5 :end-before: END 5
@ -123,6 +123,6 @@ Next we want Bob to send this cash back to Alice.
That's it! We saw how to start up several corda nodes locally, how to connect to them, and how to test some simple invariants That's it! We saw how to start up several corda nodes locally, how to connect to them, and how to test some simple invariants
about ``CashIssueAndPaymentFlow`` and ``CashPaymentFlow``. about ``CashIssueAndPaymentFlow`` and ``CashPaymentFlow``.
You can find the complete test at ``example-code/src/integration-test/java/net/corda/docs/JavaIntegrationTestingTutorial.java`` You can find the complete test at ``example-code/src/integration-test/java/net/corda/docs/java/tutorial/test/JavaIntegrationTestingTutorial.java``
(Java) and ``example-code/src/integration-test/kotlin/net/corda/docs/KotlinIntegrationTestingTutorial.kt`` (Kotlin) in the (Java) and ``example-code/src/integration-test/kotlin/net/corda/docs/kotlin/tutorial/test/KotlinIntegrationTestingTutorial.kt`` (Kotlin) in the
`Corda repo <https://github.com/corda/corda>`_. `Corda repo <https://github.com/corda/corda>`_.

115
docs/source/upgrade-notes.rst
View File

@ -1,3 +1,9 @@
.. highlight:: kotlin
.. raw:: html
<script type="text/javascript" src="_static/jquery.js"></script>
<script type="text/javascript" src="_static/codesets.js"></script>
Upgrading a CorDapp to a new platform version Upgrading a CorDapp to a new platform version
============================================= =============================================
@ -34,22 +40,121 @@ do this by connecting directly to the node's ``persistence.mv.db`` file. See :re
UNRELEASED UNRELEASED
---------- ----------
* Database upgrade - Change the type of the ``checkpoint_value``. FinalityFlow
This will address the issue that the `vacuum` function is unable to clean up deleted checkpoints as they are still referenced from the ``pg_shdepend`` table. ^^^^^^^^^^^^
The previous ``FinalityFlow`` API is insecure. It requires a handler flow in the counterparty node which accepts any and
all signed transactions that are sent to it, without checks. It is **highly** recommended that existing CorDapps migrate
away to the new API.
As an example, let's take a very simple flow that finalises a transaction without the involvement of a counterpart flow:
.. container:: codeset
.. literalinclude:: example-code/src/main/kotlin/net/corda/docs/kotlin/FinalityFlowMigration.kt
:language: kotlin
:start-after: DOCSTART SimpleFlowUsingOldApi
:end-before: DOCEND SimpleFlowUsingOldApi
.. literalinclude:: example-code/src/main/java/net/corda/docs/java/FinalityFlowMigration.java
:language: java
:start-after: DOCSTART SimpleFlowUsingOldApi
:end-before: DOCEND SimpleFlowUsingOldApi
:dedent: 4
To use the new API, this flow needs to be annotated with ``InitiatingFlow`` and a ``FlowSession`` to the participant of the transaction must be
passed to ``FinalityFlow`` :
.. container:: codeset
.. literalinclude:: example-code/src/main/kotlin/net/corda/docs/kotlin/FinalityFlowMigration.kt
:language: kotlin
:start-after: DOCSTART SimpleFlowUsingNewApi
:end-before: DOCEND SimpleFlowUsingNewApi
.. literalinclude:: example-code/src/main/java/net/corda/docs/java/FinalityFlowMigration.java
:language: java
:start-after: DOCSTART SimpleFlowUsingNewApi
:end-before: DOCEND SimpleFlowUsingNewApi
:dedent: 4
If there are more than one transaction participants then a session to each one must be initiated, excluding the local party
and the notary.
A responder flow has to be introduced, which will automatically run on the other participants' nodes, which will call ``ReceiveFinalityFlow``
to record the finalised transaction:
.. container:: codeset
.. literalinclude:: example-code/src/main/kotlin/net/corda/docs/kotlin/FinalityFlowMigration.kt
:language: kotlin
:start-after: DOCSTART SimpleNewResponderFlow
:end-before: DOCEND SimpleNewResponderFlow
.. literalinclude:: example-code/src/main/java/net/corda/docs/java/FinalityFlowMigration.java
:language: java
:start-after: DOCSTART SimpleNewResponderFlow
:end-before: DOCEND SimpleNewResponderFlow
:dedent: 4
For flows which are already initiating counterpart flows then it's a simple matter of using the existing flow session.
Note however, the new ``FinalityFlow`` is inlined and so the sequence of sends and receives between the two flows will
change and will be incompatible with your current flows. You can use the flow version API to write your flows in a
backwards compatible way.
Here's what an upgraded initiating flow may look like:
.. container:: codeset
.. literalinclude:: example-code/src/main/kotlin/net/corda/docs/kotlin/FinalityFlowMigration.kt
:language: kotlin
:start-after: DOCSTART ExistingInitiatingFlow
:end-before: DOCEND ExistingInitiatingFlow
.. literalinclude:: example-code/src/main/java/net/corda/docs/java/FinalityFlowMigration.java
:language: java
:start-after: DOCSTART ExistingInitiatingFlow
:end-before: DOCEND ExistingInitiatingFlow
:dedent: 4
For the responder flow, insert a call to ``ReceiveFinalityFlow`` at the location where it's expecting to receive the
finalised transaction. If the initiator is written in a backwards compatible way then so must the responder.
.. container:: codeset
.. literalinclude:: example-code/src/main/kotlin/net/corda/docs/kotlin/FinalityFlowMigration.kt
:language: kotlin
:start-after: DOCSTART ExistingResponderFlow
:end-before: DOCEND ExistingResponderFlow
:dedent: 8
.. literalinclude:: example-code/src/main/java/net/corda/docs/java/FinalityFlowMigration.java
:language: java
:start-after: DOCSTART ExistingResponderFlow
:end-before: DOCEND ExistingResponderFlow
:dedent: 12
The responder flow may be waiting for the finalised transaction to appear in the local node's vault using ``waitForLedgerCommit``.
This is no longer necessary with ``ReceiveFinalityFlow`` and the call to ``waitForLedgerCommit`` can be removed.
Database schema changes
^^^^^^^^^^^^^^^^^^^^^^^
The type of the ``checkpoint_value`` column has changed. This will address the issue that the `vacuum` function is unable
to clean up deleted checkpoints as they are still referenced from the ``pg_shdepend`` table.
For Postgres: For Postgres:
.. sourcecode:: sql .. sourcecode:: sql
ALTER TABLE node_checkpoints ALTER COLUMN checkpoint_value set data type bytea; ALTER TABLE node_checkpoints ALTER COLUMN checkpoint_value set data type bytea;
For H2: For H2:
.. sourcecode:: sql .. sourcecode:: sql
ALTER TABLE node_checkpoints ALTER COLUMN checkpoint_value set data type VARBINARY(33554432); ALTER TABLE node_checkpoints ALTER COLUMN checkpoint_value set data type VARBINARY(33554432);
* API change: ``net.corda.core.schemas.PersistentStateRef`` fields (``index`` and ``txId``) incorrectly marked as nullable are now non-nullable, * API change: ``net.corda.core.schemas.PersistentStateRef`` fields (``index`` and ``txId``) incorrectly marked as nullable are now non-nullable,
:doc:`changelog` contains the explanation. :doc:`changelog` contains the explanation.

10
experimental/corda-utils/src/main/kotlin/io/cryptoblk/core/Utils.kt
View File

@ -19,16 +19,6 @@ inline fun <reified T : ContractState> ServiceHub.queryStateByRef(ref: StateRef)
return results.states.firstOrNull() ?: throw IllegalArgumentException("State (type=${T::class}) corresponding to the reference $ref not found (or is spent).") return results.states.firstOrNull() ?: throw IllegalArgumentException("State (type=${T::class}) corresponding to the reference $ref not found (or is spent).")
} }
/**
* Shorthand when a single party signs a TX and then returns a result that uses the signed TX (e.g. includes the TX id)
*/
@Suspendable
fun <R> FlowLogic<R>.finalize(tx: TransactionBuilder, returnWithSignedTx: (stx: SignedTransaction) -> R): R {
val stx = serviceHub.signInitialTransaction(tx)
subFlow(FinalityFlow(stx)) // it'll send to all participants in the state by default
return returnWithSignedTx(stx)
}
/** /**
* Corda fails when it tries to store the same attachment hash twice. And it's convenient to also do nothing if no attachment is provided. * Corda fails when it tries to store the same attachment hash twice. And it's convenient to also do nothing if no attachment is provided.
* This doesn't fix the same-attachment problem completely but should at least help in testing with the same file. * This doesn't fix the same-attachment problem completely but should at least help in testing with the same file.

10
finance/src/main/kotlin/net/corda/finance/flows/AbstractCashFlow.kt
View File

@ -2,12 +2,8 @@ package net.corda.finance.flows
import co.paralleluniverse.fibers.Suspendable import co.paralleluniverse.fibers.Suspendable
import net.corda.core.contracts.Amount import net.corda.core.contracts.Amount
import net.corda.core.flows.FinalityFlow import net.corda.core.flows.*
import net.corda.core.flows.FlowException
import net.corda.core.flows.FlowLogic
import net.corda.core.flows.NotaryException
import net.corda.core.identity.AbstractParty import net.corda.core.identity.AbstractParty
import net.corda.core.identity.Party
import net.corda.core.serialization.CordaSerializable import net.corda.core.serialization.CordaSerializable
import net.corda.core.transactions.SignedTransaction import net.corda.core.transactions.SignedTransaction
import net.corda.core.utilities.ProgressTracker import net.corda.core.utilities.ProgressTracker
@ -27,9 +23,9 @@ abstract class AbstractCashFlow<out T>(override val progressTracker: ProgressTra
} }
@Suspendable @Suspendable
protected fun finaliseTx(tx: SignedTransaction, extraParticipants: Set<Party>, message: String): SignedTransaction { protected fun finaliseTx(tx: SignedTransaction, sessions: Collection<FlowSession>, message: String): SignedTransaction {
try { try {
return subFlow(FinalityFlow(tx, extraParticipants)) return subFlow(FinalityFlow(tx, sessions))
} catch (e: NotaryException) { } catch (e: NotaryException) {
throw CashException(message, e) throw CashException(message, e)
} }

26
finance/src/main/kotlin/net/corda/finance/flows/CashExitFlow.kt
View File

@ -3,8 +3,7 @@ package net.corda.finance.flows
import co.paralleluniverse.fibers.Suspendable import co.paralleluniverse.fibers.Suspendable
import net.corda.core.contracts.Amount import net.corda.core.contracts.Amount
import net.corda.core.contracts.InsufficientBalanceException import net.corda.core.contracts.InsufficientBalanceException
import net.corda.core.flows.StartableByRPC import net.corda.core.flows.*
import net.corda.core.identity.Party
import net.corda.core.node.services.queryBy import net.corda.core.node.services.queryBy
import net.corda.core.node.services.vault.DEFAULT_PAGE_NUM import net.corda.core.node.services.vault.DEFAULT_PAGE_NUM
import net.corda.core.node.services.vault.PageSpecification import net.corda.core.node.services.vault.PageSpecification
@ -28,6 +27,7 @@ import java.util.*
* @param issuerRef the reference on the issued currency. Added to the node's legal identity to determine the * @param issuerRef the reference on the issued currency. Added to the node's legal identity to determine the
* issuer. * issuer.
*/ */
@InitiatingFlow
@StartableByRPC @StartableByRPC
class CashExitFlow(private val amount: Amount<Currency>, class CashExitFlow(private val amount: Amount<Currency>,
private val issuerRef: OpaqueBytes, private val issuerRef: OpaqueBytes,
@ -53,7 +53,7 @@ class CashExitFlow(private val amount: Amount<Currency>,
.getInstance { serviceHub.jdbcSession().metaData } .getInstance { serviceHub.jdbcSession().metaData }
.unconsumedCashStatesForSpending(serviceHub, amount, setOf(issuer.party), builder.notary, builder.lockId, setOf(issuer.reference)) .unconsumedCashStatesForSpending(serviceHub, amount, setOf(issuer.party), builder.notary, builder.lockId, setOf(issuer.reference))
val signers = try { val signers = try {
val changeOwner = exitStates.map { it.state.data.owner }.toSet().firstOrNull() ?: throw InsufficientBalanceException(amount) val changeOwner = exitStates.asSequence().map { it.state.data.owner }.toSet().firstOrNull() ?: throw InsufficientBalanceException(amount)
Cash().generateExit( Cash().generateExit(
builder, builder,
amount.issuedBy(issuer), amount.issuedBy(issuer),
@ -67,21 +67,31 @@ class CashExitFlow(private val amount: Amount<Currency>,
val inputStates = serviceHub.vaultService.queryBy<Cash.State>(VaultQueryCriteria(stateRefs = builder.inputStates()), val inputStates = serviceHub.vaultService.queryBy<Cash.State>(VaultQueryCriteria(stateRefs = builder.inputStates()),
PageSpecification(pageNumber = DEFAULT_PAGE_NUM, pageSize = builder.inputStates().size)).states PageSpecification(pageNumber = DEFAULT_PAGE_NUM, pageSize = builder.inputStates().size)).states
// TODO: Is it safe to drop participants we don't know how to contact? Does not knowing how to contact them val participantSessions = inputStates
// count as a reason to fail? .asSequence()
val participants: Set<Party> = inputStates
.mapNotNull { serviceHub.identityService.wellKnownPartyFromAnonymous(it.state.data.owner) } .mapNotNull { serviceHub.identityService.wellKnownPartyFromAnonymous(it.state.data.owner) }
.toSet() .filterNot(serviceHub.myInfo::isLegalIdentity)
.distinct()
.map(::initiateFlow)
.toList()
// Sign transaction // Sign transaction
progressTracker.currentStep = SIGNING_TX progressTracker.currentStep = SIGNING_TX
val tx = serviceHub.signInitialTransaction(builder, signers) val tx = serviceHub.signInitialTransaction(builder, signers)
// Commit the transaction // Commit the transaction
progressTracker.currentStep = FINALISING_TX progressTracker.currentStep = FINALISING_TX
val notarised = finaliseTx(tx, participants, "Unable to notarise exit") val notarised = finaliseTx(tx, participantSessions, "Unable to notarise exit")
return Result(notarised, null) return Result(notarised, null)
} }
@CordaSerializable @CordaSerializable
class ExitRequest(amount: Amount<Currency>, val issuerRef: OpaqueBytes) : AbstractRequest(amount) class ExitRequest(amount: Amount<Currency>, val issuerRef: OpaqueBytes) : AbstractRequest(amount)
} }
@InitiatedBy(CashExitFlow::class)
class CashExitResponderFlow(private val otherSide: FlowSession) : FlowLogic<Unit>() {
@Suspendable
override fun call() {
subFlow(ReceiveFinalityFlow(otherSide))
}
}

14
finance/src/main/kotlin/net/corda/finance/flows/CashPaymentFlow.kt
View File

@ -4,7 +4,7 @@ import co.paralleluniverse.fibers.Suspendable
import net.corda.confidential.SwapIdentitiesFlow import net.corda.confidential.SwapIdentitiesFlow
import net.corda.core.contracts.Amount import net.corda.core.contracts.Amount
import net.corda.core.contracts.InsufficientBalanceException import net.corda.core.contracts.InsufficientBalanceException
import net.corda.core.flows.StartableByRPC import net.corda.core.flows.*
import net.corda.core.identity.AnonymousParty import net.corda.core.identity.AnonymousParty
import net.corda.core.identity.Party import net.corda.core.identity.Party
import net.corda.core.serialization.CordaSerializable import net.corda.core.serialization.CordaSerializable
@ -28,6 +28,7 @@ import java.util.*
* for testing purposes. * for testing purposes.
*/ */
@StartableByRPC @StartableByRPC
@InitiatingFlow
open class CashPaymentFlow( open class CashPaymentFlow(
val amount: Amount<Currency>, val amount: Amount<Currency>,
val recipient: Party, val recipient: Party,
@ -75,7 +76,8 @@ open class CashPaymentFlow(
progressTracker.currentStep = FINALISING_TX progressTracker.currentStep = FINALISING_TX
logger.info("Finalising transaction for: ${tx.id}") logger.info("Finalising transaction for: ${tx.id}")
val notarised = finaliseTx(tx, setOf(recipient), "Unable to notarise spend") val sessions = if (serviceHub.myInfo.isLegalIdentity(recipient)) emptyList() else listOf(initiateFlow(recipient))
val notarised = finaliseTx(tx, sessions, "Unable to notarise spend")
logger.info("Finalised transaction for: ${notarised.id}") logger.info("Finalised transaction for: ${notarised.id}")
return Result(notarised, anonymousRecipient) return Result(notarised, anonymousRecipient)
} }
@ -87,3 +89,11 @@ open class CashPaymentFlow(
val issuerConstraint: Set<Party> = emptySet(), val issuerConstraint: Set<Party> = emptySet(),
val notary: Party? = null) : AbstractRequest(amount) val notary: Party? = null) : AbstractRequest(amount)
} }
@InitiatedBy(CashPaymentFlow::class)
class CashPaymentResponderFlow(private val otherSide: FlowSession) : FlowLogic<Unit>() {
@Suspendable
override fun call() {
subFlow(ReceiveFinalityFlow(otherSide))
}
}

7
finance/src/main/kotlin/net/corda/finance/flows/TwoPartyDealFlow.kt
View File

@ -71,7 +71,7 @@ object TwoPartyDealFlow {
val txId = subFlow(signTransactionFlow).id val txId = subFlow(signTransactionFlow).id
return waitForLedgerCommit(txId) return subFlow(ReceiveFinalityFlow(otherSideSession, expectedTxId = txId))
} }
@Suspendable @Suspendable
@ -81,8 +81,7 @@ object TwoPartyDealFlow {
/** /**
* Abstracted bilateral deal flow participant that is recipient of initial communication. * Abstracted bilateral deal flow participant that is recipient of initial communication.
*/ */
abstract class Secondary<U>(override val progressTracker: ProgressTracker = Secondary.tracker(), abstract class Secondary<U>(override val progressTracker: ProgressTracker = Secondary.tracker()) : FlowLogic<SignedTransaction>() {
val regulators: Set<Party> = emptySet()) : FlowLogic<SignedTransaction>() {
companion object { companion object {
object RECEIVING : ProgressTracker.Step("Waiting for deal info.") object RECEIVING : ProgressTracker.Step("Waiting for deal info.")
@ -124,7 +123,7 @@ object TwoPartyDealFlow {
logger.trace("Got signatures from other party, verifying ... ") logger.trace("Got signatures from other party, verifying ... ")
progressTracker.currentStep = RECORDING progressTracker.currentStep = RECORDING
val ftx = subFlow(FinalityFlow(stx, regulators + otherSideSession.counterparty)) val ftx = subFlow(FinalityFlow(stx, otherSideSession))
logger.trace("Recorded transaction.") logger.trace("Recorded transaction.")
return ftx return ftx

4
finance/src/main/kotlin/net/corda/finance/flows/TwoPartyTradeFlow.kt
View File

@ -114,7 +114,7 @@ object TwoPartyTradeFlow {
val txId = subFlow(signTransactionFlow).id val txId = subFlow(signTransactionFlow).id
// DOCEND 5 // DOCEND 5
return waitForLedgerCommit(txId) return subFlow(ReceiveFinalityFlow(otherSideSession, expectedTxId = txId))
} }
// DOCEND 4 // DOCEND 4
@ -188,7 +188,7 @@ object TwoPartyTradeFlow {
// Notarise and record the transaction. // Notarise and record the transaction.
progressTracker.currentStep = RECORDING progressTracker.currentStep = RECORDING
return subFlow(FinalityFlow(twiceSignedTx)) return subFlow(FinalityFlow(twiceSignedTx, sellerSession))
} }
@Suspendable @Suspendable

15
finance/src/test/kotlin/net/corda/finance/flows/CashPaymentFlowTests.kt
View File

@ -13,6 +13,7 @@ import net.corda.testing.core.*
import net.corda.testing.node.InMemoryMessagingNetwork.ServicePeerAllocationStrategy.RoundRobin import net.corda.testing.node.InMemoryMessagingNetwork.ServicePeerAllocationStrategy.RoundRobin
import net.corda.testing.node.MockNetwork import net.corda.testing.node.MockNetwork
import net.corda.testing.node.StartedMockNode import net.corda.testing.node.StartedMockNode
import org.assertj.core.api.Assertions.assertThat
import org.junit.After import org.junit.After
import org.junit.Before import org.junit.Before
import org.junit.Test import org.junit.Test
@ -29,7 +30,7 @@ class CashPaymentFlowTests {
@Before @Before
fun start() { fun start() {
mockNet = MockNetwork(servicePeerAllocationStrategy = RoundRobin(), cordappPackages = listOf("net.corda.finance.contracts.asset", "net.corda.finance.schemas")) mockNet = MockNetwork(servicePeerAllocationStrategy = RoundRobin(), cordappPackages = listOf("net.corda.finance"))
bankOfCordaNode = mockNet.createPartyNode(BOC_NAME) bankOfCordaNode = mockNet.createPartyNode(BOC_NAME)
bankOfCorda = bankOfCordaNode.info.identityFromX500Name(BOC_NAME) bankOfCorda = bankOfCordaNode.info.identityFromX500Name(BOC_NAME)
aliceNode = mockNet.createPartyNode(ALICE_NAME) aliceNode = mockNet.createPartyNode(ALICE_NAME)
@ -61,10 +62,10 @@ class CashPaymentFlowTests {
// Check Bank of Corda vault updates - we take in some issued cash and split it into $500 to the notary // Check Bank of Corda vault updates - we take in some issued cash and split it into $500 to the notary
// and $1,500 back to us, so we expect to consume one state, produce one state for our own vault // and $1,500 back to us, so we expect to consume one state, produce one state for our own vault
vaultUpdatesBoc.expectEvents { vaultUpdatesBoc.expectEvents {
expect { update -> expect { (consumed, produced) ->
require(update.consumed.size == 1) { "Expected 1 consumed states, actual: $update" } assertThat(consumed).hasSize(1)
require(update.produced.size == 1) { "Expected 1 produced states, actual: $update" } assertThat(produced).hasSize(1)
val changeState = update.produced.single().state.data val changeState = produced.single().state.data
assertEquals(expectedChange.`issued by`(bankOfCorda.ref(ref)), changeState.amount) assertEquals(expectedChange.`issued by`(bankOfCorda.ref(ref)), changeState.amount)
} }
} }
@ -72,8 +73,8 @@ class CashPaymentFlowTests {
// Check notary node vault updates // Check notary node vault updates
vaultUpdatesBankClient.expectEvents { vaultUpdatesBankClient.expectEvents {
expect { (consumed, produced) -> expect { (consumed, produced) ->
require(consumed.isEmpty()) { consumed.size } assertThat(consumed).isEmpty()
require(produced.size == 1) { produced.size } assertThat(produced).hasSize(1)
val paymentState = produced.single().state.data val paymentState = produced.single().state.data
assertEquals(expectedPayment.`issued by`(bankOfCorda.ref(ref)), paymentState.amount) assertEquals(expectedPayment.`issued by`(bankOfCorda.ref(ref)), paymentState.amount)
} }

5
node/src/integration-test/kotlin/net/corda/node/modes/draining/FlowsDrainingModeContentionTest.kt
View File

@ -33,7 +33,6 @@ import java.util.concurrent.Executors
import java.util.concurrent.ScheduledExecutorService import java.util.concurrent.ScheduledExecutorService
class FlowsDrainingModeContentionTest { class FlowsDrainingModeContentionTest {
private val portAllocation = PortAllocation.Incremental(10000) private val portAllocation = PortAllocation.Incremental(10000)
private val user = User("mark", "dadada", setOf(all())) private val user = User("mark", "dadada", setOf(all()))
private val users = listOf(user) private val users = listOf(user)
@ -90,7 +89,7 @@ class ProposeTransactionAndWaitForCommit(private val data: String,
subFlow(SendTransactionFlow(session, signedTx)) subFlow(SendTransactionFlow(session, signedTx))
session.send(myRpcInfo) session.send(myRpcInfo)
return waitForLedgerCommit(signedTx.id) return subFlow(ReceiveFinalityFlow(session, expectedTxId = signedTx.id))
} }
} }
@ -104,7 +103,7 @@ class SignTransactionTriggerDrainingModeAndFinality(private val session: FlowSes
triggerDrainingModeForInitiatingNode(initiatingRpcInfo) triggerDrainingModeForInitiatingNode(initiatingRpcInfo)
subFlow(FinalityFlow(signedTx, setOf(session.counterparty))) subFlow(FinalityFlow(signedTx, session))
} }
private fun triggerDrainingModeForInitiatingNode(initiatingRpcInfo: RpcInfo) { private fun triggerDrainingModeForInitiatingNode(initiatingRpcInfo: RpcInfo) {

2
node/src/integration-test/kotlin/net/corda/node/persistence/NodeStatePersistenceTests.kt
View File

@ -136,6 +136,6 @@ class SendMessageFlow(private val message: Message, private val notary: Party) :
val signedTx = serviceHub.signInitialTransaction(txBuilder) val signedTx = serviceHub.signInitialTransaction(txBuilder)
progressTracker.currentStep = FINALISING_TRANSACTION progressTracker.currentStep = FINALISING_TRANSACTION
return subFlow(FinalityFlow(signedTx, FINALISING_TRANSACTION.childProgressTracker())) return subFlow(FinalityFlow(signedTx, emptyList(), FINALISING_TRANSACTION.childProgressTracker()))
} }
} }

26
node/src/integration-test/kotlin/net/corda/node/services/events/ScheduledFlowIntegrationTests.kt
View File

@ -4,9 +4,7 @@ import co.paralleluniverse.fibers.Suspendable
import com.google.common.collect.ImmutableList import com.google.common.collect.ImmutableList
import net.corda.client.rpc.CordaRPCClient import net.corda.client.rpc.CordaRPCClient
import net.corda.core.concurrent.CordaFuture import net.corda.core.concurrent.CordaFuture
import net.corda.core.flows.FinalityFlow import net.corda.core.flows.*
import net.corda.core.flows.FlowLogic
import net.corda.core.flows.StartableByRPC
import net.corda.core.identity.Party import net.corda.core.identity.Party
import net.corda.core.internal.concurrent.transpose import net.corda.core.internal.concurrent.transpose
import net.corda.core.messaging.startFlow import net.corda.core.messaging.startFlow
@ -32,6 +30,7 @@ import kotlin.test.assertEquals
class ScheduledFlowIntegrationTests { class ScheduledFlowIntegrationTests {
@StartableByRPC @StartableByRPC
@InitiatingFlow
class InsertInitialStateFlow(private val destination: Party, class InsertInitialStateFlow(private val destination: Party,
private val notary: Party, private val notary: Party,
private val identity: Int = 1, private val identity: Int = 1,
@ -44,11 +43,20 @@ class ScheduledFlowIntegrationTests {
.addOutputState(scheduledState, DummyContract.PROGRAM_ID) .addOutputState(scheduledState, DummyContract.PROGRAM_ID)
.addCommand(dummyCommand(ourIdentity.owningKey)) .addCommand(dummyCommand(ourIdentity.owningKey))
val tx = serviceHub.signInitialTransaction(builder) val tx = serviceHub.signInitialTransaction(builder)
subFlow(FinalityFlow(tx)) subFlow(FinalityFlow(tx, initiateFlow(destination)))
}
}
@InitiatedBy(InsertInitialStateFlow::class)
class InsertInitialStateResponderFlow(private val otherSide: FlowSession) : FlowLogic<Unit>() {
@Suspendable
override fun call() {
subFlow(ReceiveFinalityFlow(otherSide))
} }
} }
@StartableByRPC @StartableByRPC
@InitiatingFlow
class AnotherFlow(private val identity: String) : FlowLogic<Unit>() { class AnotherFlow(private val identity: String) : FlowLogic<Unit>() {
@Suspendable @Suspendable
override fun call() { override fun call() {
@ -64,7 +72,15 @@ class ScheduledFlowIntegrationTests {
.addOutputState(outputState, DummyContract.PROGRAM_ID) .addOutputState(outputState, DummyContract.PROGRAM_ID)
.addCommand(dummyCommand(ourIdentity.owningKey)) .addCommand(dummyCommand(ourIdentity.owningKey))
val tx = serviceHub.signInitialTransaction(builder) val tx = serviceHub.signInitialTransaction(builder)
subFlow(FinalityFlow(tx, outputState.participants.toSet())) subFlow(FinalityFlow(tx, initiateFlow(state.state.data.destination)))
}
}
@InitiatedBy(AnotherFlow::class)
class AnotherResponderFlow(private val otherSide: FlowSession) : FlowLogic<Unit>() {
@Suspendable
override fun call() {
subFlow(ReceiveFinalityFlow(otherSide))
} }
} }

16
node/src/integration-test/kotlin/net/corda/testMessage/ScheduledState.kt
View File

@ -2,10 +2,7 @@ package net.corda.testMessage
import co.paralleluniverse.fibers.Suspendable import co.paralleluniverse.fibers.Suspendable
import net.corda.core.contracts.* import net.corda.core.contracts.*
import net.corda.core.flows.FinalityFlow import net.corda.core.flows.*
import net.corda.core.flows.FlowLogic
import net.corda.core.flows.FlowLogicRefFactory
import net.corda.core.flows.SchedulableFlow
import net.corda.core.identity.Party import net.corda.core.identity.Party
import net.corda.core.transactions.TransactionBuilder import net.corda.core.transactions.TransactionBuilder
import net.corda.core.utilities.NonEmptySet import net.corda.core.utilities.NonEmptySet
@ -16,6 +13,7 @@ import java.util.*
import kotlin.reflect.jvm.jvmName import kotlin.reflect.jvm.jvmName
@SchedulableFlow @SchedulableFlow
@InitiatingFlow
class ScheduledFlow(private val stateRef: StateRef) : FlowLogic<Unit>() { class ScheduledFlow(private val stateRef: StateRef) : FlowLogic<Unit>() {
@Suspendable @Suspendable
override fun call() { override fun call() {
@ -35,7 +33,15 @@ class ScheduledFlow(private val stateRef: StateRef) : FlowLogic<Unit>() {
.addOutputState(newStateOutput, DummyContract.PROGRAM_ID) .addOutputState(newStateOutput, DummyContract.PROGRAM_ID)
.addCommand(dummyCommand(ourIdentity.owningKey)) .addCommand(dummyCommand(ourIdentity.owningKey))
val tx = serviceHub.signInitialTransaction(builder) val tx = serviceHub.signInitialTransaction(builder)
subFlow(FinalityFlow(tx, setOf(scheduledState.destination))) subFlow(FinalityFlow(tx, initiateFlow(scheduledState.destination)))
}
}
@InitiatedBy(ScheduledFlow::class)
class ScheduledResponderFlow(private val otherSide: FlowSession) : FlowLogic<Unit>() {
@Suspendable
override fun call() {
subFlow(ReceiveFinalityFlow(otherSide))
} }
} }

4
node/src/integration-test/kotlin/net/test/cordapp/v1/FlowCheckpointCordapp.kt
View File

@ -49,9 +49,9 @@ class SendMessageFlow(private val message: Message, private val notary: Party, p
return if (reciepent != null) { return if (reciepent != null) {
val session = initiateFlow(reciepent) val session = initiateFlow(reciepent)
subFlow(SendTransactionFlow(session, signedTx)) subFlow(SendTransactionFlow(session, signedTx))
subFlow(FinalityFlow(signedTx, setOf(reciepent), FINALISING_TRANSACTION.childProgressTracker())) subFlow(FinalityFlow(signedTx, listOf(session), FINALISING_TRANSACTION.childProgressTracker()))
} else { } else {
subFlow(FinalityFlow(signedTx, FINALISING_TRANSACTION.childProgressTracker())) subFlow(FinalityFlow(signedTx, emptyList(), FINALISING_TRANSACTION.childProgressTracker()))
} }
} }
} }

29
node/src/main/kotlin/net/corda/node/internal/AbstractNode.kt
View File

@ -649,12 +649,39 @@ abstract class AbstractNode<S>(val configuration: NodeConfiguration,
} }
private fun installCoreFlows() { private fun installCoreFlows() {
flowManager.registerInitiatedCoreFlowFactory(FinalityFlow::class, FinalityHandler::class, ::FinalityHandler) installFinalityHandler()
flowManager.registerInitiatedCoreFlowFactory(NotaryChangeFlow::class, NotaryChangeHandler::class, ::NotaryChangeHandler) flowManager.registerInitiatedCoreFlowFactory(NotaryChangeFlow::class, NotaryChangeHandler::class, ::NotaryChangeHandler)
flowManager.registerInitiatedCoreFlowFactory(ContractUpgradeFlow.Initiate::class, NotaryChangeHandler::class, ::ContractUpgradeHandler) flowManager.registerInitiatedCoreFlowFactory(ContractUpgradeFlow.Initiate::class, NotaryChangeHandler::class, ::ContractUpgradeHandler)
// TODO Make this an inlined flow (and remove this flow mapping!), which should be possible now that FinalityFlow is also inlined
flowManager.registerInitiatedCoreFlowFactory(SwapIdentitiesFlow::class, SwapIdentitiesHandler::class, ::SwapIdentitiesHandler) flowManager.registerInitiatedCoreFlowFactory(SwapIdentitiesFlow::class, SwapIdentitiesHandler::class, ::SwapIdentitiesHandler)
} }
// The FinalityHandler is insecure as it blindly accepts any and all transactions into the node's local vault without doing any checks.
// To plug this hole, the sending-side FinalityFlow has been made inlined with an inlined ReceiveFinalityFlow counterpart. The old
// FinalityFlow API is gated to only work with old CorDapps (those whose target platform version < 4), and the FinalityHandler will only
// work if there is at least one old CorDapp loaded (to preserve backwards compatibility).
//
// If an attempt is made to send us a transaction via FinalityHandler, and it's disabled, we will reject the request at the session-init
// level by throwing a FinalityHandlerDisabled exception. This is picked up by the flow hospital which will not send the error back
// (immediately) and instead pause the request by keeping it un-acknowledged in the message broker. This means the request isn't lost
// across node restarts and allows the node operator time to accept or reject the request.
// TODO Add public API to allow the node operator to accept or reject
private fun installFinalityHandler() {
// Disable the insecure FinalityHandler if none of the loaded CorDapps are old enough to require it.
val cordappsNeedingFinalityHandler = cordappLoader.cordapps.filter { it.info.targetPlatformVersion < 4 }
if (cordappsNeedingFinalityHandler.isEmpty()) {
log.info("FinalityHandler is disabled as there are no CorDapps loaded which require it")
} else {
log.warn("FinalityHandler is enabled as there are CorDapps that require it: ${cordappsNeedingFinalityHandler.map { it.info }}. " +
"This is insecure and it is strongly recommended that newer versions of these CorDapps be used instead.")
}
val disabled = cordappsNeedingFinalityHandler.isEmpty()
flowManager.registerInitiatedCoreFlowFactory(FinalityFlow::class, FinalityHandler::class) {
if (disabled) throw SessionRejectException.FinalityHandlerDisabled()
FinalityHandler(it)
}
}
protected open fun makeTransactionStorage(transactionCacheSizeBytes: Long): WritableTransactionStorage { protected open fun makeTransactionStorage(transactionCacheSizeBytes: Long): WritableTransactionStorage {
return DBTransactionStorage(database, cacheFactory) return DBTransactionStorage(database, cacheFactory)
} }

21
node/src/main/kotlin/net/corda/node/services/CoreFlowHandlers.kt
View File

@ -7,21 +7,15 @@ import net.corda.core.contracts.requireThat
import net.corda.core.flows.* import net.corda.core.flows.*
import net.corda.core.identity.Party import net.corda.core.identity.Party
import net.corda.core.internal.ContractUpgradeUtils import net.corda.core.internal.ContractUpgradeUtils
import net.corda.core.transactions.ContractUpgradeWireTransaction
import net.corda.core.node.StatesToRecord import net.corda.core.node.StatesToRecord
import net.corda.core.transactions.ContractUpgradeWireTransaction
import net.corda.core.transactions.SignedTransaction import net.corda.core.transactions.SignedTransaction
// TODO: We should have a whitelist of contracts we're willing to accept at all, and reject if the transaction class FinalityHandler(val sender: FlowSession) : FlowLogic<Unit>() {
// includes us in any outside that list. Potentially just if it includes any outside that list at all.
// TODO: Do we want to be able to reject specific transactions on more complex rules, for example reject incoming
// cash without from unknown parties?
class FinalityHandler(private val sender: FlowSession) : FlowLogic<Unit>() {
@Suspendable @Suspendable
override fun call() { override fun call() {
subFlow(ReceiveTransactionFlow(sender, true, StatesToRecord.ONLY_RELEVANT)) subFlow(ReceiveTransactionFlow(sender, true, StatesToRecord.ONLY_RELEVANT))
} }
internal fun sender(): Party = sender.counterparty
} }
class NotaryChangeHandler(otherSideSession: FlowSession) : AbstractStateReplacementFlow.Acceptor<Party>(otherSideSession) { class NotaryChangeHandler(otherSideSession: FlowSession) : AbstractStateReplacementFlow.Acceptor<Party>(otherSideSession) {
@ -54,10 +48,13 @@ class ContractUpgradeHandler(otherSide: FlowSession) : AbstractStateReplacementF
override fun verifyProposal(stx: SignedTransaction, proposal: AbstractStateReplacementFlow.Proposal<Class<out UpgradedContract<ContractState, *>>>) { override fun verifyProposal(stx: SignedTransaction, proposal: AbstractStateReplacementFlow.Proposal<Class<out UpgradedContract<ContractState, *>>>) {
// Retrieve signed transaction from our side, we will apply the upgrade logic to the transaction on our side, and // Retrieve signed transaction from our side, we will apply the upgrade logic to the transaction on our side, and
// verify outputs matches the proposed upgrade. // verify outputs matches the proposed upgrade.
val ourSTX = serviceHub.validatedTransactions.getTransaction(proposal.stateRef.txhash) val ourSTX = requireNotNull(serviceHub.validatedTransactions.getTransaction(proposal.stateRef.txhash)) {
requireNotNull(ourSTX) { "We don't have a copy of the referenced state" } "We don't have a copy of the referenced state"
val oldStateAndRef = ourSTX!!.resolveBaseTransaction(serviceHub).outRef<ContractState>(proposal.stateRef.index) }
val authorisedUpgrade = serviceHub.contractUpgradeService.getAuthorisedContractUpgrade(oldStateAndRef.ref) ?: throw IllegalStateException("Contract state upgrade is unauthorised. State hash : ${oldStateAndRef.ref}") val oldStateAndRef = ourSTX.resolveBaseTransaction(serviceHub).outRef<ContractState>(proposal.stateRef.index)
val authorisedUpgrade = checkNotNull(serviceHub.contractUpgradeService.getAuthorisedContractUpgrade(oldStateAndRef.ref)) {
"Contract state upgrade is unauthorised. State hash : ${oldStateAndRef.ref}"
}
val proposedTx = stx.coreTransaction as ContractUpgradeWireTransaction val proposedTx = stx.coreTransaction as ContractUpgradeWireTransaction
val expectedTx = ContractUpgradeUtils.assembleUpgradeTx(oldStateAndRef, proposal.modification, proposedTx.privacySalt, serviceHub) val expectedTx = ContractUpgradeUtils.assembleUpgradeTx(oldStateAndRef, proposal.modification, proposedTx.privacySalt, serviceHub)
requireThat { requireThat {

5
node/src/main/kotlin/net/corda/node/services/statemachine/SessionRejectException.kt
View File

@ -12,5 +12,8 @@ open class SessionRejectException(message: String) : CordaException(message) {
class NotAFlow(val initiatorClass: Class<*>) : SessionRejectException("${initiatorClass.name} is not a flow") class NotAFlow(val initiatorClass: Class<*>) : SessionRejectException("${initiatorClass.name} is not a flow")
class NotRegistered(val initiatorFlowClass: Class<out FlowLogic<*>>) : SessionRejectException("${initiatorFlowClass.name} is not registered") class NotRegistered(val initiatorFlowClass: Class<out FlowLogic<*>>) : SessionRejectException("${initiatorFlowClass.name} is not registered")
}
class FinalityHandlerDisabled : SessionRejectException("Counterparty attempting to use the old insecure API of FinalityFlow. However this " +
"API is disabled on this node since there no CorDapps installed that require it. It may be that the counterparty is running an " +
"older verison of a CorDapp.")
}

6
node/src/main/kotlin/net/corda/node/services/statemachine/StaffedFlowHospital.kt
View File

@ -42,6 +42,9 @@ class StaffedFlowHospital(private val flowMessaging: FlowMessaging, private val
// installed on restart, at which point the message will be able proceed as normal. If not then it will need // installed on restart, at which point the message will be able proceed as normal. If not then it will need
// to be dropped manually. // to be dropped manually.
Outcome.OVERNIGHT_OBSERVATION Outcome.OVERNIGHT_OBSERVATION
} else if (error is SessionRejectException.FinalityHandlerDisabled) {
// TODO We need a way to be able to give the green light to such a session-init message
Outcome.OVERNIGHT_OBSERVATION
} else { } else {
Outcome.UNTREATABLE Outcome.UNTREATABLE
} }
@ -284,7 +287,8 @@ class StaffedFlowHospital(private val flowMessaging: FlowMessaging, private val
private fun warn(flowLogic: FinalityHandler, flowFiber: FlowFiber, currentState: StateMachineState) { private fun warn(flowLogic: FinalityHandler, flowFiber: FlowFiber, currentState: StateMachineState) {
log.warn("Flow ${flowFiber.id} failed to be finalised. Manual intervention may be required before retrying " + log.warn("Flow ${flowFiber.id} failed to be finalised. Manual intervention may be required before retrying " +
"the flow by re-starting the node. State machine state: $currentState, initiating party was: ${flowLogic.sender().name}") "the flow by re-starting the node. State machine state: $currentState, initiating party was: " +
"${flowLogic.sender.counterparty}")
} }
} }
} }

33
node/src/test/kotlin/net/corda/node/modes/draining/ScheduledFlowsDrainingModeTest.kt
View File

@ -2,11 +2,9 @@ package net.corda.node.modes.draining
import co.paralleluniverse.fibers.Suspendable import co.paralleluniverse.fibers.Suspendable
import net.corda.core.contracts.* import net.corda.core.contracts.*
import net.corda.core.flows.FinalityFlow import net.corda.core.flows.*
import net.corda.core.flows.FlowLogic
import net.corda.core.flows.FlowLogicRefFactory
import net.corda.core.flows.SchedulableFlow
import net.corda.core.identity.Party import net.corda.core.identity.Party
import net.corda.core.internal.packageName
import net.corda.core.transactions.TransactionBuilder import net.corda.core.transactions.TransactionBuilder
import net.corda.core.utilities.contextLogger import net.corda.core.utilities.contextLogger
import net.corda.core.utilities.getOrThrow import net.corda.core.utilities.getOrThrow
@ -43,7 +41,10 @@ class ScheduledFlowsDrainingModeTest {
@Before @Before
fun setup() { fun setup() {
mockNet = InternalMockNetwork(cordappsForAllNodes = cordappsForPackages("net.corda.testing.contracts"), threadPerNode = true) mockNet = InternalMockNetwork(
cordappsForAllNodes = cordappsForPackages("net.corda.testing.contracts", javaClass.packageName),
threadPerNode = true
)
aliceNode = mockNet.createNode(InternalMockNodeParameters(legalName = ALICE_NAME)) aliceNode = mockNet.createNode(InternalMockNodeParameters(legalName = ALICE_NAME))
bobNode = mockNet.createNode(InternalMockNodeParameters(legalName = BOB_NAME)) bobNode = mockNet.createNode(InternalMockNodeParameters(legalName = BOB_NAME))
notary = mockNet.defaultNotaryIdentity notary = mockNet.defaultNotaryIdentity
@ -112,6 +113,7 @@ class ScheduledFlowsDrainingModeTest {
override val participants: List<Party> get() = listOf(source, destination) override val participants: List<Party> get() = listOf(source, destination)
} }
@InitiatingFlow
class InsertInitialStateFlow(private val destination: Party, private val notary: Party) : FlowLogic<Unit>() { class InsertInitialStateFlow(private val destination: Party, private val notary: Party) : FlowLogic<Unit>() {
@Suspendable @Suspendable
override fun call() { override fun call() {
@ -120,11 +122,20 @@ class ScheduledFlowsDrainingModeTest {
.addOutputState(scheduledState, DummyContract.PROGRAM_ID) .addOutputState(scheduledState, DummyContract.PROGRAM_ID)
.addCommand(dummyCommand(ourIdentity.owningKey)) .addCommand(dummyCommand(ourIdentity.owningKey))
val tx = serviceHub.signInitialTransaction(builder) val tx = serviceHub.signInitialTransaction(builder)
subFlow(FinalityFlow(tx)) subFlow(FinalityFlow(tx, initiateFlow(destination)))
}
}
@InitiatedBy(InsertInitialStateFlow::class)
class InsertInitialStateResponderFlow(private val otherSide: FlowSession) : FlowLogic<Unit>() {
@Suspendable
override fun call() {
subFlow(ReceiveFinalityFlow(otherSide))
} }
} }
@SchedulableFlow @SchedulableFlow
@InitiatingFlow
class ScheduledFlow(private val stateRef: StateRef) : FlowLogic<Unit>() { class ScheduledFlow(private val stateRef: StateRef) : FlowLogic<Unit>() {
@Suspendable @Suspendable
override fun call() { override fun call() {
@ -142,7 +153,15 @@ class ScheduledFlowsDrainingModeTest {
.addOutputState(newStateOutput, DummyContract.PROGRAM_ID) .addOutputState(newStateOutput, DummyContract.PROGRAM_ID)
.addCommand(dummyCommand(ourIdentity.owningKey)) .addCommand(dummyCommand(ourIdentity.owningKey))
val tx = serviceHub.signInitialTransaction(builder) val tx = serviceHub.signInitialTransaction(builder)
subFlow(FinalityFlow(tx, setOf(scheduledState.destination))) subFlow(FinalityFlow(tx, initiateFlow(scheduledState.destination)))
}
}
@InitiatedBy(ScheduledFlow::class)
class ScheduledResponderFlow(private val otherSide: FlowSession) : FlowLogic<Unit>() {
@Suspendable
override fun call() {
subFlow(ReceiveFinalityFlow(otherSide))
} }
} }
} }

136
node/src/test/kotlin/net/corda/node/services/FinalityHandlerTest.kt
View File

@ -1,8 +1,12 @@
package net.corda.node.services package net.corda.node.services
import net.corda.core.concurrent.CordaFuture
import net.corda.core.contracts.TransactionVerificationException
import net.corda.core.crypto.SecureHash import net.corda.core.crypto.SecureHash
import net.corda.core.flows.FinalityFlow import net.corda.core.flows.FinalityFlow
import net.corda.core.flows.StateMachineRunId import net.corda.core.flows.StateMachineRunId
import net.corda.core.internal.cordapp.CordappInfoResolver
import net.corda.core.internal.packageName
import net.corda.core.toFuture import net.corda.core.toFuture
import net.corda.core.transactions.SignedTransaction import net.corda.core.transactions.SignedTransaction
import net.corda.core.transactions.TransactionBuilder import net.corda.core.transactions.TransactionBuilder
@ -16,8 +20,10 @@ import net.corda.testing.core.BOB_NAME
import net.corda.testing.core.singleIdentity import net.corda.testing.core.singleIdentity
import net.corda.testing.node.internal.* import net.corda.testing.node.internal.*
import org.assertj.core.api.Assertions.assertThat import org.assertj.core.api.Assertions.assertThat
import org.assertj.core.api.Assertions.assertThatThrownBy
import org.junit.After import org.junit.After
import org.junit.Test import org.junit.Test
import rx.Observable
class FinalityHandlerTest { class FinalityHandlerTest {
private val mockNet = InternalMockNetwork() private val mockNet = InternalMockNetwork()
@ -31,51 +37,115 @@ class FinalityHandlerTest {
fun `sent to flow hospital on error and attempted retry on node restart`() { fun `sent to flow hospital on error and attempted retry on node restart`() {
// Setup a network where only Alice has the finance CorDapp and it sends a cash tx to Bob who doesn't have the // Setup a network where only Alice has the finance CorDapp and it sends a cash tx to Bob who doesn't have the
// CorDapp. Bob's FinalityHandler will error when validating the tx. // CorDapp. Bob's FinalityHandler will error when validating the tx.
val alice = mockNet.createNode(InternalMockNodeParameters(legalName = ALICE_NAME, additionalCordapps = setOf(FINANCE_CORDAPP))) val alice = mockNet.createNode(InternalMockNodeParameters(
legalName = ALICE_NAME,
additionalCordapps = setOf(FINANCE_CORDAPP)
))
var bob = mockNet.createNode(InternalMockNodeParameters(legalName = BOB_NAME)) var bob = mockNet.createNode(InternalMockNodeParameters(
legalName = BOB_NAME,
// The node disables the FinalityHandler completely if there are no old CorDapps loaded, so we need to add
// a token old CorDapp to keep the handler running.
additionalCordapps = setOf(cordappForPackages(javaClass.packageName).withTargetVersion(3))
))
val stx = TransactionBuilder(mockNet.defaultNotaryIdentity).let { val stx = alice.issueCashTo(bob)
Cash().generateIssue( val finalityHandlerId = bob.trackFinalityHandlerId().run {
it, alice.finaliseWithOldApi(stx)
1000.POUNDS.issuedBy(alice.info.singleIdentity().ref(0)), getOrThrow()
bob.info.singleIdentity(),
mockNet.defaultNotaryIdentity
)
alice.services.signInitialTransaction(it)
} }
val finalityHandlerIdFuture = bob.smm.track() bob.assertFlowSentForObservationDueToConstraintError(finalityHandlerId)
.updates assertThat(bob.getTransaction(stx.id)).isNull()
.filter { it.logic is FinalityHandler }
.map { it.logic.runId }
.toFuture()
val finalisedTx = alice.services.startFlow(FinalityFlow(stx)).run {
mockNet.runNetwork()
resultFuture.getOrThrow()
}
val finalityHandlerId = finalityHandlerIdFuture.getOrThrow()
bob.assertFlowSentForObservation(finalityHandlerId)
assertThat(bob.getTransaction(finalisedTx.id)).isNull()
bob = mockNet.restartNode(bob) bob = mockNet.restartNode(bob)
// Since we've not done anything to fix the orignal error, we expect the finality handler to be sent to the hospital // Since we've not done anything to fix the orignal error, we expect the finality handler to be sent to the hospital
// again on restart // again on restart
bob.assertFlowSentForObservation(finalityHandlerId) bob.assertFlowSentForObservationDueToConstraintError(finalityHandlerId)
assertThat(bob.getTransaction(finalisedTx.id)).isNull() assertThat(bob.getTransaction(stx.id)).isNull()
} }
private fun TestStartedNode.assertFlowSentForObservation(runId: StateMachineRunId) { @Test
val keptInForObservation = smm.flowHospital fun `disabled if there are no old CorDapps loaded`() {
.track() val alice = mockNet.createNode(InternalMockNodeParameters(
.let { it.updates.startWith(it.snapshot) } legalName = ALICE_NAME,
.ofType(MedicalRecord.Flow::class.java) additionalCordapps = setOf(FINANCE_CORDAPP)
.filter { it.flowId == runId && it.outcome == Outcome.OVERNIGHT_OBSERVATION } ))
val bob = mockNet.createNode(InternalMockNodeParameters(
legalName = BOB_NAME,
// Make sure the target version is 4, and not the current platform version which may be greater
additionalCordapps = setOf(FINANCE_CORDAPP.withTargetVersion(4))
))
val stx = alice.issueCashTo(bob)
val finalityFuture = alice.finaliseWithOldApi(stx)
val record = bob.medicalRecordsOfType<MedicalRecord.SessionInit>()
.toBlocking() .toBlocking()
.first() .first()
assertThat(keptInForObservation.by).contains(FinalityDoctor) assertThat(record.outcome).isEqualTo(Outcome.OVERNIGHT_OBSERVATION)
assertThat(record.sender).isEqualTo(alice.info.singleIdentity())
assertThat(record.initiatorFlowClassName).isEqualTo(FinalityFlow::class.java.name)
assertThat(bob.getTransaction(stx.id)).isNull()
// Drop the session-init so that Alice gets the error message
assertThat(finalityFuture).isNotDone()
bob.smm.flowHospital.dropSessionInit(record.id)
mockNet.runNetwork()
assertThatThrownBy {
finalityFuture.getOrThrow()
}.hasMessageContaining("Counterparty attempting to use the old insecure API of FinalityFlow")
}
private fun TestStartedNode.issueCashTo(recipient: TestStartedNode): SignedTransaction {
return TransactionBuilder(mockNet.defaultNotaryIdentity).let {
Cash().generateIssue(
it,
1000.POUNDS.issuedBy(info.singleIdentity().ref(0)),
recipient.info.singleIdentity(),
mockNet.defaultNotaryIdentity
)
services.signInitialTransaction(it)
}
}
private fun TestStartedNode.trackFinalityHandlerId(): CordaFuture<StateMachineRunId> {
return smm
.track()
.updates
.filter { it.logic is FinalityHandler }
.map { it.logic.runId }
.toFuture()
}
private fun TestStartedNode.finaliseWithOldApi(stx: SignedTransaction): CordaFuture<SignedTransaction> {
return CordappInfoResolver.withCordappInfo(targetPlatformVersion = 3) {
@Suppress("DEPRECATION")
services.startFlow(FinalityFlow(stx)).resultFuture.apply {
mockNet.runNetwork()
}
}
}
private inline fun <reified R : MedicalRecord> TestStartedNode.medicalRecordsOfType(): Observable<R> {
return smm
.flowHospital
.track()
.let { it.updates.startWith(it.snapshot) }
.ofType(R::class.java)
}
private fun TestStartedNode.assertFlowSentForObservationDueToConstraintError(runId: StateMachineRunId) {
val observation = medicalRecordsOfType<MedicalRecord.Flow>()
.filter { it.flowId == runId }
.toBlocking()
.first()
assertThat(observation.outcome).isEqualTo(Outcome.OVERNIGHT_OBSERVATION)
assertThat(observation.by).contains(FinalityDoctor)
val error = observation.errors.single()
assertThat(error).isInstanceOf(TransactionVerificationException.ContractConstraintRejection::class.java)
} }
private fun TestStartedNode.getTransaction(id: SecureHash): SignedTransaction? { private fun TestStartedNode.getTransaction(id: SecureHash): SignedTransaction? {

2
node/src/test/kotlin/net/corda/node/services/ServiceHubConcurrentUsageTest.kt
View File

@ -65,7 +65,7 @@ class ServiceHubConcurrentUsageTest {
val issuer = ourIdentity.ref(OpaqueBytes.of(0)) val issuer = ourIdentity.ref(OpaqueBytes.of(0))
Cash().generateIssue(builder, 10.DOLLARS.issuedBy(issuer), ourIdentity, notary) Cash().generateIssue(builder, 10.DOLLARS.issuedBy(issuer), ourIdentity, notary)
val stx = serviceHub.signInitialTransaction(builder) val stx = serviceHub.signInitialTransaction(builder)
return subFlow(FinalityFlow(stx)) return subFlow(FinalityFlow(stx, emptyList()))
} }
} }
} }

2
node/src/test/kotlin/net/corda/node/services/TimedFlowTests.kt
View File

@ -143,7 +143,7 @@ class TimedFlowTests {
setTimeWindow(services.clock.instant(), 30.seconds) setTimeWindow(services.clock.instant(), 30.seconds)
addOutputState(DummyContract.SingleOwnerState(owner = info.singleIdentity()), DummyContract.PROGRAM_ID, AlwaysAcceptAttachmentConstraint) addOutputState(DummyContract.SingleOwnerState(owner = info.singleIdentity()), DummyContract.PROGRAM_ID, AlwaysAcceptAttachmentConstraint)
} }
val flow = FinalityFlow(issueTx) val flow = FinalityFlow(issueTx, emptyList())
val progressTracker = flow.progressTracker val progressTracker = flow.progressTracker
assertNotEquals(ProgressTracker.DONE, progressTracker.currentStep) assertNotEquals(ProgressTracker.DONE, progressTracker.currentStep)
val progressTrackerDone = getDoneFuture(flow.progressTracker) val progressTrackerDone = getDoneFuture(flow.progressTracker)

30
node/src/test/kotlin/net/corda/node/services/events/ScheduledFlowTests.kt
View File

@ -4,11 +4,9 @@ import co.paralleluniverse.fibers.Suspendable
import net.corda.core.concurrent.CordaFuture import net.corda.core.concurrent.CordaFuture
import net.corda.core.context.InvocationOrigin import net.corda.core.context.InvocationOrigin
import net.corda.core.contracts.* import net.corda.core.contracts.*
import net.corda.core.flows.FinalityFlow import net.corda.core.flows.*
import net.corda.core.flows.FlowLogic
import net.corda.core.flows.FlowLogicRefFactory
import net.corda.core.flows.SchedulableFlow
import net.corda.core.identity.Party import net.corda.core.identity.Party
import net.corda.core.internal.packageName
import net.corda.core.node.services.VaultService import net.corda.core.node.services.VaultService
import net.corda.core.node.services.queryBy import net.corda.core.node.services.queryBy
import net.corda.core.node.services.vault.QueryCriteria.VaultQueryCriteria import net.corda.core.node.services.vault.QueryCriteria.VaultQueryCriteria
@ -60,6 +58,7 @@ class ScheduledFlowTests {
override val participants: List<Party> get() = listOf(source, destination) override val participants: List<Party> get() = listOf(source, destination)
} }
@InitiatingFlow
class InsertInitialStateFlow(private val destination: Party, private val notary: Party) : FlowLogic<Unit>() { class InsertInitialStateFlow(private val destination: Party, private val notary: Party) : FlowLogic<Unit>() {
@Suspendable @Suspendable
override fun call() { override fun call() {
@ -68,10 +67,19 @@ class ScheduledFlowTests {
.addOutputState(scheduledState, DummyContract.PROGRAM_ID) .addOutputState(scheduledState, DummyContract.PROGRAM_ID)
.addCommand(dummyCommand(ourIdentity.owningKey)) .addCommand(dummyCommand(ourIdentity.owningKey))
val tx = serviceHub.signInitialTransaction(builder) val tx = serviceHub.signInitialTransaction(builder)
subFlow(FinalityFlow(tx)) subFlow(FinalityFlow(tx, initiateFlow(destination)))
} }
} }
@InitiatedBy(InsertInitialStateFlow::class)
class InsertInitialStateResponderFlow(private val otherSide: FlowSession) : FlowLogic<Unit>() {
@Suspendable
override fun call() {
subFlow(ReceiveFinalityFlow(otherSide))
}
}
@InitiatingFlow
@SchedulableFlow @SchedulableFlow
class ScheduledFlow(private val stateRef: StateRef) : FlowLogic<Unit>() { class ScheduledFlow(private val stateRef: StateRef) : FlowLogic<Unit>() {
@Suspendable @Suspendable
@ -90,13 +98,21 @@ class ScheduledFlowTests {
.addOutputState(newStateOutput, DummyContract.PROGRAM_ID) .addOutputState(newStateOutput, DummyContract.PROGRAM_ID)
.addCommand(dummyCommand(ourIdentity.owningKey)) .addCommand(dummyCommand(ourIdentity.owningKey))
val tx = serviceHub.signInitialTransaction(builder) val tx = serviceHub.signInitialTransaction(builder)
subFlow(FinalityFlow(tx, setOf(scheduledState.destination))) subFlow(FinalityFlow(tx, initiateFlow(scheduledState.destination)))
}
}
@InitiatedBy(ScheduledFlow::class)
class ScheduledResponderFlow(private val otherSide: FlowSession) : FlowLogic<Unit>() {
@Suspendable
override fun call() {
subFlow(ReceiveFinalityFlow(otherSide))
} }
} }
@Before @Before
fun setup() { fun setup() {
mockNet = InternalMockNetwork(cordappsForAllNodes = cordappsForPackages("net.corda.testing.contracts"), threadPerNode = true) mockNet = InternalMockNetwork(cordappsForAllNodes = cordappsForPackages("net.corda.testing.contracts", javaClass.packageName), threadPerNode = true)
aliceNode = mockNet.createNode(InternalMockNodeParameters(legalName = ALICE_NAME)) aliceNode = mockNet.createNode(InternalMockNodeParameters(legalName = ALICE_NAME))
bobNode = mockNet.createNode(InternalMockNodeParameters(legalName = BOB_NAME)) bobNode = mockNet.createNode(InternalMockNodeParameters(legalName = BOB_NAME))
notary = mockNet.defaultNotaryIdentity notary = mockNet.defaultNotaryIdentity

94
node/src/test/kotlin/net/corda/node/services/statemachine/FlowFrameworkTests.kt
View File

@ -7,14 +7,11 @@ import co.paralleluniverse.strands.concurrent.Semaphore
import net.corda.client.rpc.notUsed import net.corda.client.rpc.notUsed
import net.corda.core.concurrent.CordaFuture import net.corda.core.concurrent.CordaFuture
import net.corda.core.contracts.ContractState import net.corda.core.contracts.ContractState
import net.corda.core.contracts.StateAndRef import net.corda.core.crypto.SecureHash
import net.corda.core.crypto.random63BitValue import net.corda.core.crypto.random63BitValue
import net.corda.core.flows.* import net.corda.core.flows.*
import net.corda.core.identity.Party import net.corda.core.identity.Party
import net.corda.core.internal.FlowStateMachine
import net.corda.core.internal.concurrent.flatMap import net.corda.core.internal.concurrent.flatMap
import net.corda.core.internal.concurrent.map
import net.corda.core.internal.uncheckedCast
import net.corda.core.messaging.MessageRecipients import net.corda.core.messaging.MessageRecipients
import net.corda.core.node.services.PartyInfo import net.corda.core.node.services.PartyInfo
import net.corda.core.node.services.queryBy import net.corda.core.node.services.queryBy
@ -30,7 +27,10 @@ import net.corda.core.utilities.unwrap
import net.corda.node.services.persistence.checkpoints import net.corda.node.services.persistence.checkpoints
import net.corda.testing.contracts.DummyContract import net.corda.testing.contracts.DummyContract
import net.corda.testing.contracts.DummyState import net.corda.testing.contracts.DummyState
import net.corda.testing.core.* import net.corda.testing.core.ALICE_NAME
import net.corda.testing.core.BOB_NAME
import net.corda.testing.core.dummyCommand
import net.corda.testing.core.singleIdentity
import net.corda.testing.internal.LogHelper import net.corda.testing.internal.LogHelper
import net.corda.testing.node.InMemoryMessagingNetwork.MessageTransfer import net.corda.testing.node.InMemoryMessagingNetwork.MessageTransfer
import net.corda.testing.node.InMemoryMessagingNetwork.ServicePeerAllocationStrategy.RoundRobin import net.corda.testing.node.InMemoryMessagingNetwork.ServicePeerAllocationStrategy.RoundRobin
@ -66,7 +66,7 @@ class FlowFrameworkTests {
@Before @Before
fun setUpMockNet() { fun setUpMockNet() {
mockNet = InternalMockNetwork( mockNet = InternalMockNetwork(
cordappsForAllNodes = cordappsForPackages("net.corda.testing.contracts"), cordappsForAllNodes = cordappsForPackages("net.corda.testing.contracts") + FINANCE_CORDAPP,
servicePeerAllocationStrategy = RoundRobin() servicePeerAllocationStrategy = RoundRobin()
) )
@ -266,18 +266,20 @@ class FlowFrameworkTests {
} }
@Test @Test
fun `wait for transaction`() { fun waitForLedgerCommit() {
val ptx = TransactionBuilder(notary = notaryIdentity) val ptx = TransactionBuilder(notary = notaryIdentity)
.addOutputState(DummyState(), DummyContract.PROGRAM_ID) .addOutputState(DummyState(), DummyContract.PROGRAM_ID)
.addCommand(dummyCommand(alice.owningKey)) .addCommand(dummyCommand(alice.owningKey))
val stx = aliceNode.services.signInitialTransaction(ptx) val stx = aliceNode.services.signInitialTransaction(ptx)
val committerFiber = aliceNode.registerCordappFlowFactory(WaitingFlows.Waiter::class) { val committerStx = aliceNode.registerCordappFlowFactory(CommitReceiverFlow::class) {
WaitingFlows.Committer(it) CommitterFlow(it)
}.map { it.stateMachine }.map { uncheckedCast<FlowStateMachine<*>, FlowStateMachine<Any>>(it) } }.flatMap { it.stateMachine.resultFuture }
val waiterStx = bobNode.services.startFlow(WaitingFlows.Waiter(stx, alice)).resultFuture // The waitForLedgerCommit call has to occur on separate flow
val waiterStx = bobNode.services.startFlow(WaiterFlow(stx.id)).resultFuture
val commitReceiverStx = bobNode.services.startFlow(CommitReceiverFlow(stx, alice)).resultFuture
mockNet.runNetwork() mockNet.runNetwork()
assertThat(waiterStx.getOrThrow()).isEqualTo(committerFiber.getOrThrow().resultFuture.getOrThrow()) assertThat(committerStx.getOrThrow()).isEqualTo(waiterStx.getOrThrow()).isEqualTo(commitReceiverStx.getOrThrow())
} }
@Test @Test
@ -287,10 +289,8 @@ class FlowFrameworkTests {
.addCommand(dummyCommand()) .addCommand(dummyCommand())
val stx = aliceNode.services.signInitialTransaction(ptx) val stx = aliceNode.services.signInitialTransaction(ptx)
aliceNode.registerCordappFlowFactory(WaitingFlows.Waiter::class) { aliceNode.registerCordappFlowFactory(CommitReceiverFlow::class) { CommitterFlow(it) { throw Exception("Error") } }
WaitingFlows.Committer(it) { throw Exception("Error") } val waiter = bobNode.services.startFlow(CommitReceiverFlow(stx, alice)).resultFuture
}
val waiter = bobNode.services.startFlow(WaitingFlows.Waiter(stx, alice)).resultFuture
mockNet.runNetwork() mockNet.runNetwork()
assertThatExceptionOfType(UnexpectedFlowEndException::class.java).isThrownBy { assertThatExceptionOfType(UnexpectedFlowEndException::class.java).isThrownBy {
waiter.getOrThrow() waiter.getOrThrow()
@ -299,18 +299,10 @@ class FlowFrameworkTests {
@Test @Test
fun `verify vault query service is tokenizable by force checkpointing within a flow`() { fun `verify vault query service is tokenizable by force checkpointing within a flow`() {
val ptx = TransactionBuilder(notary = notaryIdentity) aliceNode.registerCordappFlowFactory(VaultQueryFlow::class) { InitiatedSendFlow("Hello", it) }
.addOutputState(DummyState(), DummyContract.PROGRAM_ID) val result = bobNode.services.startFlow(VaultQueryFlow(alice)).resultFuture
.addCommand(dummyCommand(alice.owningKey))
val stx = aliceNode.services.signInitialTransaction(ptx)
aliceNode.registerCordappFlowFactory(VaultQueryFlow::class) {
WaitingFlows.Committer(it)
}
val result = bobNode.services.startFlow(VaultQueryFlow(stx, alice)).resultFuture
mockNet.runNetwork() mockNet.runNetwork()
assertThat(result.getOrThrow()).isEmpty() result.getOrThrow()
} }
@Test @Test
@ -492,24 +484,27 @@ class FlowFrameworkTests {
} }
} }
private object WaitingFlows { class WaiterFlow(private val txId: SecureHash) : FlowLogic<SignedTransaction>() {
@InitiatingFlow @Suspendable
class Waiter(val stx: SignedTransaction, val otherParty: Party) : FlowLogic<SignedTransaction>() { override fun call(): SignedTransaction = waitForLedgerCommit(txId)
@Suspendable }
override fun call(): SignedTransaction {
val otherPartySession = initiateFlow(otherParty)
otherPartySession.send(stx)
return waitForLedgerCommit(stx.id)
}
}
class Committer(val otherPartySession: FlowSession, val throwException: (() -> Exception)? = null) : FlowLogic<SignedTransaction>() { @InitiatingFlow
@Suspendable class CommitReceiverFlow(val stx: SignedTransaction, private val otherParty: Party) : FlowLogic<SignedTransaction>() {
override fun call(): SignedTransaction { @Suspendable
val stx = otherPartySession.receive<SignedTransaction>().unwrap { it } override fun call(): SignedTransaction {
if (throwException != null) throw throwException.invoke() val otherPartySession = initiateFlow(otherParty)
return subFlow(FinalityFlow(stx, setOf(otherPartySession.counterparty))) otherPartySession.send(stx)
} return subFlow(ReceiveFinalityFlow(otherPartySession, expectedTxId = stx.id))
}
}
class CommitterFlow(private val otherPartySession: FlowSession, private val throwException: (() -> Exception)? = null) : FlowLogic<SignedTransaction>() {
@Suspendable
override fun call(): SignedTransaction {
val stx = otherPartySession.receive<SignedTransaction>().unwrap { it }
if (throwException != null) throw throwException.invoke()
return subFlow(FinalityFlow(stx, otherPartySession))
} }
} }
@ -527,16 +522,15 @@ class FlowFrameworkTests {
private class IncorrectCustomSendFlow(payload: String, otherParty: Party) : CustomInterface, SendFlow(payload, otherParty) private class IncorrectCustomSendFlow(payload: String, otherParty: Party) : CustomInterface, SendFlow(payload, otherParty)
@InitiatingFlow @InitiatingFlow
private class VaultQueryFlow(val stx: SignedTransaction, val otherParty: Party) : FlowLogic<List<StateAndRef<ContractState>>>() { private class VaultQueryFlow(val otherParty: Party) : FlowLogic<Unit>() {
@Suspendable @Suspendable
override fun call(): List<StateAndRef<ContractState>> { override fun call() {
val otherPartySession = initiateFlow(otherParty) val otherPartySession = initiateFlow(otherParty)
otherPartySession.send(stx) // Hold onto reference here to force checkpoint of vaultService and thus
// hold onto reference here to force checkpoint of vaultService and thus
// prove it is registered as a tokenizableService in the node // prove it is registered as a tokenizableService in the node
val vaultQuerySvc = serviceHub.vaultService val vaultQuerySvc = serviceHub.vaultService
waitForLedgerCommit(stx.id) otherPartySession.receive<Any>()
return vaultQuerySvc.queryBy<ContractState>().states vaultQuerySvc.queryBy<ContractState>().states
} }
} }

36
node/src/test/kotlin/net/corda/node/services/vault/VaultFlowTest.kt
View File

@ -1,9 +1,7 @@
package net.corda.node.services.vault package net.corda.node.services.vault
import co.paralleluniverse.fibers.Suspendable import co.paralleluniverse.fibers.Suspendable
import net.corda.core.flows.FinalityFlow import net.corda.core.flows.*
import net.corda.core.flows.FlowLogic
import net.corda.core.flows.InitiatingFlow
import net.corda.core.identity.CordaX500Name import net.corda.core.identity.CordaX500Name
import net.corda.core.identity.Party import net.corda.core.identity.Party
import net.corda.core.node.services.queryBy import net.corda.core.node.services.queryBy
@ -26,7 +24,6 @@ import java.util.concurrent.ExecutionException
import kotlin.test.assertEquals import kotlin.test.assertEquals
class VaultFlowTest { class VaultFlowTest {
private lateinit var mockNetwork: MockNetwork private lateinit var mockNetwork: MockNetwork
private lateinit var partyA: StartedMockNode private lateinit var partyA: StartedMockNode
private lateinit var partyB: StartedMockNode private lateinit var partyB: StartedMockNode
@ -72,17 +69,26 @@ class VaultFlowTest {
partyB.services.vaultService.queryBy<DummyDealContract.State>().states.size partyB.services.vaultService.queryBy<DummyDealContract.State>().states.size
}) })
} }
}
@InitiatingFlow @InitiatingFlow
class Initiator(private val participants: List<Party>) : FlowLogic<Unit>() { class Initiator(private val participants: List<Party>) : FlowLogic<Unit>() {
@Suspendable @Suspendable
override fun call() { override fun call() {
val stx = serviceHub.signInitialTransaction(TransactionBuilder(serviceHub.networkMapCache.notaryIdentities.first()).apply { val stx = serviceHub.signInitialTransaction(TransactionBuilder(serviceHub.networkMapCache.notaryIdentities.first()).apply {
addOutputState(UniqueDummyLinearContract.State(participants, "Dummy linear id"), UNIQUE_DUMMY_LINEAR_CONTRACT_PROGRAM_ID) addOutputState(UniqueDummyLinearContract.State(participants, "Dummy linear id"), UNIQUE_DUMMY_LINEAR_CONTRACT_PROGRAM_ID)
addOutputState(DummyDealContract.State(participants, "linear id"), DUMMY_DEAL_PROGRAM_ID) addOutputState(DummyDealContract.State(participants, "linear id"), DUMMY_DEAL_PROGRAM_ID)
addCommand(DummyCommandData, listOf(ourIdentity.owningKey)) addCommand(DummyCommandData, listOf(ourIdentity.owningKey))
}) })
subFlow(FinalityFlow(stx)) val sessions = participants.mapNotNull { if (it != ourIdentity) initiateFlow(it) else null }
subFlow(FinalityFlow(stx, sessions))
}
}
@InitiatedBy(Initiator::class)
class Responder(private val otherSide: FlowSession) : FlowLogic<Unit>() {
@Suspendable
override fun call() {
subFlow(ReceiveFinalityFlow(otherSide))
}
} }
} }

9
node/src/test/kotlin/net/corda/node/services/vault/VaultSoftLockManagerTest.kt
View File

@ -101,12 +101,13 @@ class VaultSoftLockManagerTest {
object CommandDataImpl : CommandData object CommandDataImpl : CommandData
class ClientLogic(nodePair: NodePair, val state: ContractState) : NodePair.AbstractClientLogic<List<ContractState>>(nodePair) { class ClientLogic(nodePair: NodePair, val state: ContractState) : NodePair.AbstractClientLogic<List<ContractState>>(nodePair) {
override fun callImpl() = run { override fun callImpl(): List<ContractState> {
subFlow(FinalityFlow(serviceHub.signInitialTransaction(TransactionBuilder(notary = ourIdentity).apply { val stx = serviceHub.signInitialTransaction(TransactionBuilder(notary = ourIdentity).apply {
addOutputState(state, ContractImpl::class.jvmName) addOutputState(state, ContractImpl::class.jvmName)
addCommand(CommandDataImpl, ourIdentity.owningKey) addCommand(CommandDataImpl, ourIdentity.owningKey)
}))) })
serviceHub.vaultService.queryBy<ContractState>(VaultQueryCriteria(softLockingCondition = SoftLockingCondition(LOCKED_ONLY))).states.map { subFlow(FinalityFlow(stx, emptyList()))
return serviceHub.vaultService.queryBy<ContractState>(VaultQueryCriteria(softLockingCondition = SoftLockingCondition(LOCKED_ONLY))).states.map {
it.state.data it.state.data
} }
} }

20
samples/attachment-demo/src/main/kotlin/net/corda/attachmentdemo/AttachmentDemo.kt
View File

@ -8,16 +8,14 @@ import net.corda.core.contracts.Contract
import net.corda.core.contracts.ContractState import net.corda.core.contracts.ContractState
import net.corda.core.contracts.TypeOnlyCommandData import net.corda.core.contracts.TypeOnlyCommandData
import net.corda.core.crypto.SecureHash import net.corda.core.crypto.SecureHash
import net.corda.core.flows.FinalityFlow import net.corda.core.flows.*
import net.corda.core.flows.FlowLogic
import net.corda.core.flows.StartableByRPC
import net.corda.core.flows.StartableByService
import net.corda.core.identity.AbstractParty import net.corda.core.identity.AbstractParty
import net.corda.core.identity.Party import net.corda.core.identity.Party
import net.corda.core.internal.Emoji import net.corda.core.internal.Emoji
import net.corda.core.internal.InputStreamAndHash import net.corda.core.internal.InputStreamAndHash
import net.corda.core.messaging.CordaRPCOps import net.corda.core.messaging.CordaRPCOps
import net.corda.core.messaging.startTrackedFlow import net.corda.core.messaging.startTrackedFlow
import net.corda.core.node.StatesToRecord
import net.corda.core.transactions.LedgerTransaction import net.corda.core.transactions.LedgerTransaction
import net.corda.core.transactions.SignedTransaction import net.corda.core.transactions.SignedTransaction
import net.corda.core.transactions.TransactionBuilder import net.corda.core.transactions.TransactionBuilder
@ -106,6 +104,7 @@ private fun sender(rpc: CordaRPCOps, inputStream: InputStream, hash: SecureHash.
} }
// DOCEND 2 // DOCEND 2
@InitiatingFlow
@StartableByRPC @StartableByRPC
class AttachmentDemoFlow(private val otherSide: Party, class AttachmentDemoFlow(private val otherSide: Party,
private val notary: Party, private val notary: Party,
@ -125,10 +124,19 @@ class AttachmentDemoFlow(private val otherSide: Party,
progressTracker.currentStep = SIGNING progressTracker.currentStep = SIGNING
// Send the transaction to the other recipient
val stx = serviceHub.signInitialTransaction(ptx) val stx = serviceHub.signInitialTransaction(ptx)
return subFlow(FinalityFlow(stx, setOf(otherSide))) // Send the transaction to the other recipient
return subFlow(FinalityFlow(stx, initiateFlow(otherSide)))
}
}
@InitiatedBy(AttachmentDemoFlow::class)
class StoreAttachmentFlow(private val otherSide: FlowSession) : FlowLogic<Unit>() {
@Suspendable
override fun call() {
// As a non-participant to the transaction we need to record all states
subFlow(ReceiveFinalityFlow(otherSide, statesToRecord = StatesToRecord.ALL_VISIBLE))
} }
} }

2
samples/network-verifier/src/main/kotlin/net/corda/verification/TestCommsFlow.kt
View File

@ -44,7 +44,7 @@ class TestCommsFlowInitiator(private val x500Name: CordaX500Name? = null) : Flow
tx.addOutputState(CommsTestState(responses, serviceHub.myInfo.legalIdentities.first()), CommsTestContract::class.java.name) tx.addOutputState(CommsTestState(responses, serviceHub.myInfo.legalIdentities.first()), CommsTestContract::class.java.name)
tx.addCommand(CommsTestCommand, serviceHub.myInfo.legalIdentities.first().owningKey) tx.addCommand(CommsTestCommand, serviceHub.myInfo.legalIdentities.first().owningKey)
val signedTx = serviceHub.signInitialTransaction(tx) val signedTx = serviceHub.signInitialTransaction(tx)
subFlow(FinalityFlow(signedTx)) subFlow(FinalityFlow(signedTx, emptyList()))
return responses return responses
} }

4
samples/network-verifier/src/main/kotlin/net/corda/verification/TestNotaryFlow.kt
View File

@ -32,14 +32,14 @@ class TestNotaryFlow : FlowLogic<String>() {
issueBuilder.addOutputState(NotaryTestState(notary.name.toString(), myIdentity), NotaryTestContract::class.java.name) issueBuilder.addOutputState(NotaryTestState(notary.name.toString(), myIdentity), NotaryTestContract::class.java.name)
issueBuilder.addCommand(NotaryTestCommand, myIdentity.owningKey) issueBuilder.addCommand(NotaryTestCommand, myIdentity.owningKey)
val signedTx = serviceHub.signInitialTransaction(issueBuilder) val signedTx = serviceHub.signInitialTransaction(issueBuilder)
val issueResult = subFlow(FinalityFlow(signedTx)) val issueResult = subFlow(FinalityFlow(signedTx, emptyList()))
progressTracker.currentStep = ISSUED progressTracker.currentStep = ISSUED
val destroyBuilder = TransactionBuilder() val destroyBuilder = TransactionBuilder()
destroyBuilder.notary = notary destroyBuilder.notary = notary
destroyBuilder.addInputState(issueResult.tx.outRefsOfType<NotaryTestState>().first()) destroyBuilder.addInputState(issueResult.tx.outRefsOfType<NotaryTestState>().first())
destroyBuilder.addCommand(NotaryTestCommand, myIdentity.owningKey) destroyBuilder.addCommand(NotaryTestCommand, myIdentity.owningKey)
val signedDestroyT = serviceHub.signInitialTransaction(destroyBuilder) val signedDestroyT = serviceHub.signInitialTransaction(destroyBuilder)
val result = subFlow(FinalityFlow(signedDestroyT)) val result = subFlow(FinalityFlow(signedDestroyT, emptyList()))
progressTracker.currentStep = DESTROYING progressTracker.currentStep = DESTROYING
progressTracker.currentStep = FINALIZED progressTracker.currentStep = FINALIZED
return "notarised: ${result.notary}::${result.tx.id}" return "notarised: ${result.notary}::${result.tx.id}"

19
samples/trader-demo/src/main/kotlin/net/corda/traderdemo/flow/CommercialPaperIssueFlow.kt
View File

@ -3,9 +3,7 @@ package net.corda.traderdemo.flow
import co.paralleluniverse.fibers.Suspendable import co.paralleluniverse.fibers.Suspendable
import net.corda.core.contracts.Amount import net.corda.core.contracts.Amount
import net.corda.core.crypto.SecureHash import net.corda.core.crypto.SecureHash
import net.corda.core.flows.FinalityFlow import net.corda.core.flows.*
import net.corda.core.flows.FlowLogic
import net.corda.core.flows.StartableByRPC
import net.corda.core.identity.Party import net.corda.core.identity.Party
import net.corda.core.transactions.SignedTransaction import net.corda.core.transactions.SignedTransaction
import net.corda.core.transactions.TransactionBuilder import net.corda.core.transactions.TransactionBuilder
@ -22,6 +20,7 @@ import java.util.*
* Flow for the Bank of Corda node to issue some commercial paper to the seller's node, to sell to the buyer. * Flow for the Bank of Corda node to issue some commercial paper to the seller's node, to sell to the buyer.
*/ */
@StartableByRPC @StartableByRPC
@InitiatingFlow
class CommercialPaperIssueFlow(private val amount: Amount<Currency>, class CommercialPaperIssueFlow(private val amount: Amount<Currency>,
private val issueRef: OpaqueBytes, private val issueRef: OpaqueBytes,
private val recipient: Party, private val recipient: Party,
@ -56,7 +55,7 @@ class CommercialPaperIssueFlow(private val amount: Amount<Currency>,
// Sign it as ourselves. // Sign it as ourselves.
val stx = serviceHub.signInitialTransaction(tx) val stx = serviceHub.signInitialTransaction(tx)
subFlow(FinalityFlow(stx)) subFlow(FinalityFlow(stx, emptyList()))
} }
// Now make a dummy transaction that moves it to a new key, just to show that resolving dependencies works. // Now make a dummy transaction that moves it to a new key, just to show that resolving dependencies works.
@ -65,7 +64,17 @@ class CommercialPaperIssueFlow(private val amount: Amount<Currency>,
val builder = TransactionBuilder(notary) val builder = TransactionBuilder(notary)
CommercialPaper().generateMove(builder, issuance.tx.outRef(0), recipient) CommercialPaper().generateMove(builder, issuance.tx.outRef(0), recipient)
val stx = serviceHub.signInitialTransaction(builder) val stx = serviceHub.signInitialTransaction(builder)
subFlow(FinalityFlow(stx)) val recipientSession = initiateFlow(recipient)
subFlow(FinalityFlow(stx, listOf(recipientSession)))
} }
} }
} }
@InitiatedBy(CommercialPaperIssueFlow::class)
class CommercialPaperIssueResponderFlow(private val otherSideSession: FlowSession) : FlowLogic<Unit>() {
@Suspendable
override fun call() {
// Record the move transaction
subFlow(ReceiveFinalityFlow(otherSideSession))
}
}

2
testing/node-driver/src/main/kotlin/net/corda/testing/driver/Driver.kt
View File

@ -586,7 +586,7 @@ data class DriverParameters(
fun withNetworkParameters(networkParameters: NetworkParameters): DriverParameters = copy(networkParameters = networkParameters) fun withNetworkParameters(networkParameters: NetworkParameters): DriverParameters = copy(networkParameters = networkParameters)
fun withNotaryCustomOverrides(notaryCustomOverrides: Map<String, Any?>): DriverParameters = copy(notaryCustomOverrides = notaryCustomOverrides) fun withNotaryCustomOverrides(notaryCustomOverrides: Map<String, Any?>): DriverParameters = copy(notaryCustomOverrides = notaryCustomOverrides)
fun withInMemoryDB(inMemoryDB: Boolean): DriverParameters = copy(inMemoryDB = inMemoryDB) fun withInMemoryDB(inMemoryDB: Boolean): DriverParameters = copy(inMemoryDB = inMemoryDB)
fun withCordappsForAllNodes(cordappsForAllNodes: Set<TestCordapp>?): DriverParameters = copy(cordappsForAllNodes = cordappsForAllNodes) fun withCordappsForAllNodes(cordappsForAllNodes: Collection<TestCordapp>?): DriverParameters = copy(cordappsForAllNodes = cordappsForAllNodes)
fun copy( fun copy(
isDebug: Boolean, isDebug: Boolean,

10
testing/node-driver/src/main/kotlin/net/corda/testing/node/TestCordapp.kt
View File

@ -10,7 +10,7 @@ import net.corda.testing.node.internal.simplifyScanPackages
*/ */
@DoNotImplement @DoNotImplement
interface TestCordapp { interface TestCordapp {
/** Returns the name, defaults to "test-cordapp" if not specified. */ /** Returns the name, defaults to "test-name" if not specified. */
val name: String val name: String
/** Returns the title, defaults to "test-title" if not specified. */ /** Returns the title, defaults to "test-title" if not specified. */
@ -51,17 +51,21 @@ interface TestCordapp {
class Factory { class Factory {
companion object { companion object {
/**
* Create a [TestCordapp] object by scanning the given packages. The meta data on the CorDapp will be the
* default values, which can be changed with the wither methods.
*/
@JvmStatic @JvmStatic
fun fromPackages(vararg packageNames: String): TestCordapp = fromPackages(packageNames.asList()) fun fromPackages(vararg packageNames: String): TestCordapp = fromPackages(packageNames.asList())
/** /**
* Create a [TestCordapp] object by scanning the given packages. The meta data on the CorDapp will be the * Create a [TestCordapp] object by scanning the given packages. The meta data on the CorDapp will be the
* default values, which can be specified with the wither methods. * default values, which can be changed with the wither methods.
*/ */
@JvmStatic @JvmStatic
fun fromPackages(packageNames: Collection<String>): TestCordapp { fun fromPackages(packageNames: Collection<String>): TestCordapp {
return TestCordappImpl( return TestCordappImpl(
name = "test-cordapp", name = "test-name",
version = "1.0", version = "1.0",
vendor = "test-vendor", vendor = "test-vendor",
title = "test-title", title = "test-title",

4
testing/node-driver/src/main/kotlin/net/corda/testing/node/internal/InternalMockNetwork.kt
View File

@ -253,12 +253,10 @@ open class InternalMockNetwork(defaultParameters: MockNetworkParameters = MockNe
@VisibleForTesting @VisibleForTesting
internal open fun createNotaries(): List<TestStartedNode> { internal open fun createNotaries(): List<TestStartedNode> {
val version = VersionInfo(networkParameters.minimumPlatformVersion, "Mock release", "Mock revision", "Mock Vendor")
return notarySpecs.map { (name, validating) -> return notarySpecs.map { (name, validating) ->
createNode(InternalMockNodeParameters( createNode(InternalMockNodeParameters(
legalName = name, legalName = name,
configOverrides = MockNodeConfigOverrides(notary = MockNetNotaryConfig(validating)), configOverrides = MockNodeConfigOverrides(notary = MockNetNotaryConfig(validating))
version = version
)) ))
} }
} }