Merge commit '88008b71f03a539749e32e5e76b2dc5ea98f897f' into chrisr3-44-merge

docs/source/api-contract-constraints.rst

@@ -12,6 +12,9 @@ API: Contract Constraints
 
 .. note:: Before reading this page, you should be familiar with the key concepts of :doc:`key-concepts-contracts`.
 
+.. note::  As of Corda |corda_version| the `minimumPlatformVersion` required to use these features is 4
+   (see :ref:`Network Parameters <network-parameters>` and :doc:`features-versions` for more details).
+
 .. contents::
 
 Reasons for Contract Constraints

docs/source/features-versions.rst

@@ -0,0 +1,80 @@
+Corda Features to Versions
+==========================
+
+New versions of Corda introduce new features. These fall into one of three categories which have subtle but important implications for
+node owners, application developers and network operators.
+
+The first set are changes that have no impact on application developers or the Corda network protocol. An example would be support for
+a new HSM or database system, for example, and which are of interest only to a node's operator.
+
+The second set are new or changed APIs, which are of interest to CorDapp developers. When a release of Corda ships such features, the
+Platform Version of that node is incremented so that a CorDapp that relies on such a new or changed feature can detect this (eg to
+prevent it from running on a node without the feature or to trigger an alternative optimised codepath if the feature is present). The
+app developer should set the CorDapp's minimumPlatformVersion parameter to signal the minimum Platform Version against which the app
+can run or has been tested. If the application has also been tested against a greater platform version and can exploit it if present,
+the node can also set the targetPlatformVersion field.
+
+The third set of changes are those which could affect the operation of a Corda network. Examples would include a change to the
+serialisation format or flow/wire protocol, or introduction of a new transaction component.  These are changes to the core data model and
+these features have the property that it is not safe for any node or application to take advantage of until all nodes on the network
+are capable of understanding them. Such features are thus only enabled in a node if the network to which it is connected has published
+a minimumPlatformVersion in its network parameters that is greater than or equal to the Corda Platform Version that introduced the
+feature. For example, Corda 4.0 nodes, which implement Corda Platform Version 4, can only take advantage of the Corda Reference States
+feature when connected to a network with mPV 4.
+
+If there is a Platform Version below which your application will not run or is not supported, then signal that with the application's
+`CorDapp.mPV` field. This will prevent older nodes from running your app. Nodes which support newer Platform Versions may also use this
+field to trigger code paths that emulate behaviours that were in force on that older Platform Version to maximise compatibility. However,
+if you have tested your app against newer versions of Corda and know your node can take advantage of the new Platform Version behaviours
+if present, you can signal this by using `CorDapp.targetPV` to declare the latest Platform Version against which the app has been tested
+and is known to work. In this way, it is possible to ship CorDapps that can both run on all nodes supporting some minimum Platform Version
+of Corda as well as opt in to newer features should they happen to be available on any given node.
+
+.. list-table:: Corda Features
+    :header-rows: 1
+
+    * - Feature
+      - Corda Platform Version (PV)
+      - Min Network Platform Version (network mPV)
+      - Introduced in OS version
+      - Introduced in Enterprise version
+    * - Observer Nodes
+      - 2
+      - 2
+      - 2.0
+      - n/a
+    * - Corda Serialization Framework
+      - 3
+      - 3
+      - 3.0
+      - 3.0
+    * - Hash Constraints
+      - 1
+      - 1
+      - 1.0
+      - 1.0
+    * - Whitelist Constraints
+      - 3
+      - 3
+      - 3.0
+      - 3.0
+    * - Inline Finality Flow
+      - 4
+      - 3
+      - 4.0
+      - 4.0
+    * - Reference States
+      - 4
+      - 4
+      - 4.0
+      - 4.0
+    * - Signature Constraints
+      - 4
+      - 4
+      - 4.0
+      - 4.0
+    * - Underlying Support for Accounts
+      - 5
+      - 4
+      - 4.3
+      - 4.3

docs/source/network-map.rst

@@ -77,6 +77,8 @@ cluster generated like this can be sized for the maximum size you may need, and
 
 More information can be found in :doc:`network-bootstrapper`.
 
+.. _network-parameters:
+
 Network parameters
 ------------------
 
@@ -132,6 +134,8 @@ The current set of network parameters:
     Encountering an owned contract in a JAR that is not signed by the rightful owner is most likely a sign of malicious behaviour, and should be reported.
     The transaction verification logic will throw an exception when this happens.
 
+.. note:: To determine which `minimumPlatformVersion` a zone must mandate in order to permit all the features of Corda |corda_version| see :doc:`features-versions`
+
 More parameters will be added in future releases to regulate things like allowed port numbers, whether or not IPv6
 connectivity is required for zone members, required cryptographic algorithms and roll-out schedules (e.g. for moving to post quantum cryptography), parameters related to SGX and so on.
 

node/src/integration-test/kotlin/net/corda/contracts/serialization/whitelist/WhitelistContract.kt

@@ -0,0 +1,38 @@
+package net.corda.contracts.serialization.whitelist
+
+import net.corda.core.contracts.CommandData
+import net.corda.core.contracts.Contract
+import net.corda.core.contracts.ContractState
+import net.corda.core.identity.AbstractParty
+import net.corda.core.transactions.LedgerTransaction
+
+class WhitelistContract : Contract {
+    companion object {
+        const val MAX_VALUE = 2000L
+    }
+
+    override fun verify(tx: LedgerTransaction) {
+        val states = tx.outputsOfType<State>()
+        require(states.isNotEmpty()) {
+            "Requires at least one data state"
+        }
+
+        states.forEach {
+            require(it.whitelistData in WhitelistData(0)..WhitelistData(MAX_VALUE)) {
+                "WhitelistData $it exceeds maximum value!"
+            }
+        }
+    }
+
+    @Suppress("CanBeParameter", "MemberVisibilityCanBePrivate")
+    class State(val owner: AbstractParty, val whitelistData: WhitelistData) : ContractState {
+        override val participants: List<AbstractParty> = listOf(owner)
+
+        @Override
+        override fun toString(): String {
+            return whitelistData.toString()
+        }
+    }
+
+    class Operate : CommandData
+}

node/src/integration-test/kotlin/net/corda/contracts/serialization/whitelist/WhitelistData.kt

@@ -0,0 +1,15 @@
+package net.corda.contracts.serialization.whitelist
+
+import net.corda.core.serialization.SerializationWhitelist
+
+data class WhitelistData(val value: Long) : Comparable<WhitelistData> {
+    override fun compareTo(other: WhitelistData): Int {
+        return value.compareTo(other.value)
+    }
+
+    override fun toString(): String = "$value things"
+}
+
+class Whitelist : SerializationWhitelist {
+    override val whitelist = listOf(WhitelistData::class.java)
+}

node/src/integration-test/kotlin/net/corda/flows/djvm/attachment/SandboxAttachmentFlow.kt

@@ -6,11 +6,9 @@ import net.corda.core.contracts.Command
 import net.corda.core.contracts.CommandData
 import net.corda.core.crypto.SecureHash
 import net.corda.core.flows.FlowLogic
-import net.corda.core.flows.InitiatingFlow
 import net.corda.core.flows.StartableByRPC
 import net.corda.core.transactions.TransactionBuilder
 
-@InitiatingFlow
 @StartableByRPC
 class SandboxAttachmentFlow(private val command: CommandData) : FlowLogic<SecureHash>() {
     @Suspendable

node/src/integration-test/kotlin/net/corda/flows/djvm/broken/NonDeterministicFlow.kt

@@ -6,11 +6,9 @@ import net.corda.core.contracts.Command
 import net.corda.core.contracts.TypeOnlyCommandData
 import net.corda.core.crypto.SecureHash
 import net.corda.core.flows.FlowLogic
-import net.corda.core.flows.InitiatingFlow
 import net.corda.core.flows.StartableByRPC
 import net.corda.core.transactions.TransactionBuilder
 
-@InitiatingFlow
 @StartableByRPC
 class NonDeterministicFlow(private val trouble: TypeOnlyCommandData) : FlowLogic<SecureHash>() {
     @Suspendable

node/src/integration-test/kotlin/net/corda/flows/djvm/crypto/DeterministicCryptoFlow.kt

@@ -6,12 +6,10 @@ import net.corda.core.contracts.Command
 import net.corda.core.contracts.CommandData
 import net.corda.core.crypto.SecureHash
 import net.corda.core.flows.FlowLogic
-import net.corda.core.flows.InitiatingFlow
 import net.corda.core.flows.StartableByRPC
 import net.corda.core.transactions.TransactionBuilder
 import net.corda.core.utilities.OpaqueBytes
 
-@InitiatingFlow
 @StartableByRPC
 class DeterministicCryptoFlow(
         private val command: CommandData,

node/src/integration-test/kotlin/net/corda/flows/djvm/whitelist/DeterministicWhitelistFlow.kt

@@ -7,11 +7,9 @@ import net.corda.contracts.djvm.whitelist.WhitelistData
 import net.corda.core.contracts.Command
 import net.corda.core.crypto.SecureHash
 import net.corda.core.flows.FlowLogic
-import net.corda.core.flows.InitiatingFlow
 import net.corda.core.flows.StartableByRPC
 import net.corda.core.transactions.TransactionBuilder
 
-@InitiatingFlow
 @StartableByRPC
 class DeterministicWhitelistFlow(private val data: WhitelistData) : FlowLogic<SecureHash>() {
     @Suspendable

node/src/integration-test/kotlin/net/corda/flows/fixup/CordappFixupFlow.kt

@@ -7,11 +7,9 @@ import net.corda.contracts.fixup.dependent.DependentData
 import net.corda.core.contracts.Command
 import net.corda.core.crypto.SecureHash
 import net.corda.core.flows.FlowLogic
-import net.corda.core.flows.InitiatingFlow
 import net.corda.core.flows.StartableByRPC
 import net.corda.core.transactions.TransactionBuilder
 
-@InitiatingFlow
 @StartableByRPC
 class CordappFixupFlow(private val data: DependentData) : FlowLogic<SecureHash>() {
     @Suspendable

node/src/integration-test/kotlin/net/corda/flows/serialization/custom/CustomSerializerFlow.kt

@@ -7,11 +7,9 @@ import net.corda.contracts.serialization.custom.CustomSerializerContract.Purchas
 import net.corda.core.contracts.Command
 import net.corda.core.crypto.SecureHash
 import net.corda.core.flows.FlowLogic
-import net.corda.core.flows.InitiatingFlow
 import net.corda.core.flows.StartableByRPC
 import net.corda.core.transactions.TransactionBuilder
 
-@InitiatingFlow
 @StartableByRPC
 class CustomSerializerFlow(
     private val purchase: Currantsy

node/src/integration-test/kotlin/net/corda/flows/serialization/missing/MissingSerializerBuilderFlow.kt

@@ -7,11 +7,9 @@ import net.corda.contracts.serialization.missing.MissingSerializerContract.Opera
 import net.corda.core.contracts.Command
 import net.corda.core.crypto.SecureHash
 import net.corda.core.flows.FlowLogic
-import net.corda.core.flows.InitiatingFlow
 import net.corda.core.flows.StartableByRPC
 import net.corda.core.transactions.TransactionBuilder
 
-@InitiatingFlow
 @StartableByRPC
 class MissingSerializerBuilderFlow(private val value: Long) : FlowLogic<SecureHash>() {
     @Suspendable

node/src/integration-test/kotlin/net/corda/flows/serialization/missing/MissingSerializerFlow.kt

@@ -12,14 +12,12 @@ import net.corda.core.crypto.SecureHash
 import net.corda.core.crypto.SignableData
 import net.corda.core.crypto.SignatureMetadata
 import net.corda.core.flows.FlowLogic
-import net.corda.core.flows.InitiatingFlow
 import net.corda.core.flows.StartableByRPC
 import net.corda.core.internal.createComponentGroups
 import net.corda.core.internal.requiredContractClassName
 import net.corda.core.transactions.SignedTransaction
 import net.corda.core.transactions.WireTransaction
 
-@InitiatingFlow
 @StartableByRPC
 class MissingSerializerFlow(private val value: Long) : FlowLogic<SecureHash>() {
     @Suspendable

node/src/integration-test/kotlin/net/corda/flows/serialization/whitelist/WhitelistFlow.kt

@@ -0,0 +1,26 @@
+package net.corda.flows.serialization.whitelist
+
+import co.paralleluniverse.fibers.Suspendable
+import net.corda.contracts.serialization.whitelist.WhitelistContract
+import net.corda.contracts.serialization.whitelist.WhitelistContract.State
+import net.corda.contracts.serialization.whitelist.WhitelistData
+import net.corda.core.contracts.Command
+import net.corda.core.crypto.SecureHash
+import net.corda.core.flows.FlowLogic
+import net.corda.core.flows.StartableByRPC
+import net.corda.core.transactions.TransactionBuilder
+
+@StartableByRPC
+class WhitelistFlow(private val data: WhitelistData) : FlowLogic<SecureHash>() {
+    @Suspendable
+    override fun call(): SecureHash {
+        val notary = serviceHub.networkMapCache.notaryIdentities[0]
+        val stx = serviceHub.signInitialTransaction(
+            TransactionBuilder(notary)
+                .addOutputState(State(ourIdentity, data))
+                .addCommand(Command(WhitelistContract.Operate(), ourIdentity.owningKey))
+        )
+        stx.verify(serviceHub, checkSufficientSignatures = false)
+        return stx.id
+    }
+}

node/src/integration-test/kotlin/net/corda/node/ContractWithSerializationWhitelistTest.kt

@@ -0,0 +1,83 @@
+package net.corda.node
+
+import net.corda.client.rpc.CordaRPCClient
+import net.corda.contracts.serialization.whitelist.WhitelistData
+import net.corda.core.contracts.TransactionVerificationException.ContractRejection
+import net.corda.core.messaging.startFlow
+import net.corda.core.utilities.getOrThrow
+import net.corda.core.utilities.loggerFor
+import net.corda.flows.serialization.whitelist.WhitelistFlow
+import net.corda.node.services.Permissions
+import net.corda.testing.core.ALICE_NAME
+import net.corda.testing.core.DUMMY_NOTARY_NAME
+import net.corda.testing.driver.DriverParameters
+import net.corda.testing.driver.driver
+import net.corda.testing.driver.internal.incrementalPortAllocation
+import net.corda.testing.node.NotarySpec
+import net.corda.testing.node.User
+import net.corda.testing.node.internal.cordappWithPackages
+import org.assertj.core.api.Assertions.assertThat
+import org.junit.BeforeClass
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.junit.runners.Parameterized
+import org.junit.runners.Parameterized.Parameters
+import kotlin.test.assertFailsWith
+
+@RunWith(Parameterized::class)
+@Suppress("FunctionName")
+class ContractWithSerializationWhitelistTest(private val runInProcess: Boolean) {
+    companion object {
+        const val DATA = 123456L
+
+        @JvmField
+        val logger = loggerFor<ContractWithSerializationWhitelistTest>()
+
+        @JvmField
+        val contractCordapp = cordappWithPackages("net.corda.contracts.serialization.whitelist").signed()
+
+        @JvmField
+        val workflowCordapp = cordappWithPackages("net.corda.flows.serialization.whitelist").signed()
+
+        fun parametersFor(runInProcess: Boolean): DriverParameters {
+            return DriverParameters(
+                portAllocation = incrementalPortAllocation(),
+                startNodesInProcess = runInProcess,
+                notarySpecs = listOf(NotarySpec(DUMMY_NOTARY_NAME, validating = true)),
+                cordappsForAllNodes = listOf(contractCordapp, workflowCordapp)
+            )
+        }
+
+        @Parameters
+        @JvmStatic
+        fun modes(): List<Array<Boolean>> = listOf(Array(1) { true }, Array(1) { false })
+
+        @BeforeClass
+        @JvmStatic
+        fun checkData() {
+            assertNotCordaSerializable<WhitelistData>()
+        }
+    }
+
+    @Test(timeout = 300_000)
+    fun `test serialization whitelist`() {
+        logger.info("RUN-IN-PROCESS=$runInProcess")
+
+        val user = User("u", "p", setOf(Permissions.all()))
+        driver(parametersFor(runInProcess = runInProcess)) {
+            val badData = WhitelistData(DATA)
+            val alice = startNode(providedName = ALICE_NAME, rpcUsers = listOf(user)).getOrThrow()
+            val ex = assertFailsWith<ContractRejection> {
+                CordaRPCClient(hostAndPort = alice.rpcAddress)
+                    .start(user.username, user.password)
+                    .use { client ->
+                        client.proxy.startFlow(::WhitelistFlow, badData)
+                            .returnValue
+                            .getOrThrow()
+                    }
+            }
+            assertThat(ex)
+                .hasMessageContaining("WhitelistData $badData exceeds maximum value!")
+        }
+    }
+}

node/src/main/kotlin/net/corda/node/internal/cordapp/JarScanningCordappLoader.kt

@@ -219,7 +219,7 @@ class JarScanningCordappLoader private constructor(private val cordappJarPaths:
         // present in the CorDapp.
         val result = scanResult.getClassesWithSuperclass(NotaryService::class) +
                 scanResult.getClassesWithSuperclass(SinglePartyNotaryService::class)
-        if(!result.isEmpty()) {
+        if (result.isNotEmpty()) {
             logger.info("Found notary service CorDapp implementations: " + result.joinToString(", "))
         }
         return result.firstOrNull()

testing/node-driver/src/main/kotlin/net/corda/testing/node/internal/DriverDSLImpl.kt

@@ -142,11 +142,7 @@ class DriverDSLImpl(
     private lateinit var _notaries: CordaFuture<List<NotaryHandle>>
     override val notaryHandles: List<NotaryHandle> get() = _notaries.getOrThrow()
 
-    override val cordappsClassLoader: ClassLoader? = if (!startNodesInProcess) {
-        createCordappsClassLoader(cordappsForAllNodes)
-    } else {
-        null
-    }
+    override val cordappsClassLoader: URLClassLoader? = createCordappsClassLoader(cordappsForAllNodes)
 
     interface Waitable {
         @Throws(InterruptedException::class)
@@ -195,6 +191,7 @@ class DriverDSLImpl(
     }
 
     override fun shutdown() {
+        cordappsClassLoader.use { _ ->
             if (waitForAllNodesToFinish) {
                 state.locked {
                     processes.forEach { it.waitFor() }
@@ -202,7 +199,7 @@ class DriverDSLImpl(
             }
             _shutdownManager?.shutdown()
             _executorService?.shutdownNow()
-        (cordappsClassLoader as? AutoCloseable)?.close()
+        }
     }
 
     private fun establishRpc(config: NodeConfig, processDeathFuture: CordaFuture<out Process>): CordaFuture<CordaRPCOps> {
@@ -992,7 +989,7 @@ class DriverDSLImpl(
             return config
         }
 
-        private fun createCordappsClassLoader(cordapps: Collection<TestCordappInternal>?): ClassLoader? {
+        private fun createCordappsClassLoader(cordapps: Collection<TestCordappInternal>?): URLClassLoader? {
             if (cordapps == null || cordapps.isEmpty()) {
                 return null
             }

tools/shell/src/main/kotlin/net/corda/tools/shell/InteractiveShell.kt

@@ -634,6 +634,10 @@ object InteractiveShell {
             InputStreamSerializer.invokeContext = null
             InputStreamDeserializer.closeAll()
         }
+        if (cmd == "shutdown") {
+            out.println("Called 'shutdown' on the node.\nQuitting the shell now.").also { out.flush() }
+            onExit.invoke()
+        }
         return result
     }