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382 lines
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ReStructuredText
382 lines
15 KiB
ReStructuredText
Upgrade notes
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=============
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These notes provide instructions for upgrading your CorDapps from previous versions, starting with the upgrade from our
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first public Beta (:ref:`Milestone 12 <changelog_m12>`), to :ref:`V1.0 <changelog_v1>`.
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.. contents::
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:depth: 3
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General rules
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-------------
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Always remember to update the version identifiers in your project gradle file:
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.. sourcecode:: shell
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ext.corda_release_version = '1.0.0'
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ext.corda_gradle_plugins_version = '1.0.0'
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It may be necessary to update the version of major dependencies:
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.. sourcecode:: shell
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ext.kotlin_version = '1.1.4'
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ext.quasar_version = '0.7.9'
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Please consult the relevant release notes of the release in question. If not specified, you may assume the
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versions you are currently using are still in force.
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We also strongly recommend cross referencing with the :doc:`changelog` to confirm changes.
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UNRELEASED
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----------
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Testing
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~~~~~~~
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* The registration mechanism for CorDapps in ``MockNetwork`` unit tests has changed.
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It is now done via the ``cordappPackages`` constructor parameter of MockNetwork.
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This takes a list of `String` values which should be the
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package names of the CorDapps containing the contract verification code you wish to load.
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The ``unsetCordappPackages`` method is now redundant and has been removed.
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V1.0 to V2.0
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------------
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You only need to update the ``corda_release_version`` identifier in your project gradle file. The
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corda_gradle_plugins_version should remain at 1.0.0:
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.. sourcecode:: shell
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ext.corda_release_version = '2.0.0'
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ext.corda_gradle_plugins_version = '1.0.0'
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Public Beta (M12) to V1.0
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-------------------------
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:ref:`From Milestone 14 <changelog_m14>`
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Build
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^^^^^
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* MockNetwork has moved.
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A new test driver module dependency needs to be including in your project: `corda-node-driver`. To continue using the
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mock network for testing, add the following entry to your gradle build file:
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.. sourcecode:: shell
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testCompile "net.corda:corda-node-driver:$corda_release_version"
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.. note:: you may only need `testCompile "net.corda:corda-test-utils:$corda_release_version"` if not using the Driver DSL.
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Configuration
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^^^^^^^^^^^^^
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* ``CordaPluginRegistry`` has been removed.
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The one remaining configuration item ``customizeSerialisation``, which defined a optional whitelist of types for use in
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object serialization, has been replaced with the ``SerializationWhitelist`` interface which should be implemented to
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define a list of equivalent whitelisted classes.
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You will need to rename your services resource file to the new class name:
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'resources/META-INF/services/net.corda.core.node.CordaPluginRegistry' becomes 'resources/META-INF/services/net.corda.core.serialization.SerializationWhitelist'
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An associated property on ``MockNode`` was renamed from ``testPluginRegistries`` to ``testSerializationWhitelists``.
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In general, the ``@CordaSerializable`` annotation is the preferred method for whitelisting as described in :doc:`serialization`
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Missing imports
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^^^^^^^^^^^^^^^
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Use the automatic imports feature of IntelliJ to intelligently resolve the new imports.
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* Missing imports for contract types.
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CommercialPaper and Cash are now contained within the `finance` module, as are associated helpers functions.
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For example:
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``import net.corda.contracts.ICommercialPaperState`` becomes ``import net.corda.finance.contracts.ICommercialPaperState``
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``import net.corda.contracts.asset.sumCashBy`` becomes ``import net.corda.finance.utils.sumCashBy``
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``import net.corda.core.contracts.DOLLARS`` becomes ``import net.corda.finance.DOLLARS``
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``import net.corda.core.contracts.issued by`` becomes ``import net.corda.finance.issued by``
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``import net.corda.contracts.asset.Cash`` becomes ``import net.corda.finance.contracts.asset.Cash``
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* Missing imports for utility functions.
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Many common types and helper methods have been consolidated into `net.corda.core.utilities` package.
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For example:
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``import net.corda.core.crypto.commonName`` becomes ``import net.corda.core.utilities.commonName``
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``import net.corda.core.crypto.toBase58String`` becomes ``import net.corda.core.utilities.toBase58String``
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``import net.corda.core.getOrThrow`` becomes ``import net.corda.core.utilities.getOrThrow``
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* Missing flow imports.
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In general all reusable library flows are contained within the **core** API `net.corda.core.flows` package.
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Financial domain library flows are contained within the **finance** module `net.corda.finance.flows` package.
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Other flows that have moved include:
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``import net.corda.core.flows.ResolveTransactionsFlow`` becomes ``import net.corda.core.internal.ResolveTransactionsFlow``
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Core data structures
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^^^^^^^^^^^^^^^^^^^^
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* Missing Contract override.
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The contract interace attribute ``legalContractReference`` has been removed, and replaced by
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the optional annotation ``@LegalProseReference(uri = "<URI>")``
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* Unresolved reference.
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Calls to ``AuthenticatedObject`` are replaced by ``CommandWithParties``
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* Overrides nothing: ``isRelevant`` in ``LinearState``.
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Removed the concept of relevancy from ``LinearState``. A ``ContractState``'s relevance to the vault is now resolved
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internally; the vault will process any transaction from a flow which is not derived from transaction resolution verification.
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The notion of relevancy is subject to further improvements to enable a developer to control what state the vault thinks
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are relevant.
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* Calls to ``txBuilder.toLedgerTransaction()`` now requires a serviceHub parameter.
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Used by the new Contract Constraints functionality to validate and resolve attachments.
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Flow framework
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^^^^^^^^^^^^^^
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* Flow session deprecations
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``FlowLogic`` communication has been upgraded to use functions on ``FlowSession`` as the base for communication
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between nodes.
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* Calls to ``send()``, ``receive()`` and ``sendAndReceive()`` on FlowLogic should be replaced with calls
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to the function of the same name on ``FlowSession``. Note that the replacement functions do not take in a destination
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parameter, as this is defined in the session.
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* Initiated flows now take in a ``FlowSession`` instead of ``Party`` in their constructor. If you need to access the
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counterparty identity, it is in the ``counterparty`` property of the flow session.
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See ``FlowSession`` for step by step instructions on porting existing flows to use the new mechanism.
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* ``FinalityFlow`` now returns a single ``SignedTransaction``, instead of a ``List<SignedTransaction>``
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* ``TransactionKeyFlow`` renamed to ``SwapIdentitiesFlow``
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Note that ``SwapIdentitiesFlow`` must be imported from the *confidential-identities** package ''net.corda.confidential''
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Node services (ServiceHub)
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^^^^^^^^^^^^^^^^^^^^^^^^^^
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* VaultQueryService: unresolved reference to `vaultQueryService`.
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Replace all references to ``<services>.vaultQueryService`` with ``<services>.vaultService``.
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Previously there were two vault APIs. Now there is a single unified API with the same functions: ``VaultService``.
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* ``serviceHub.myInfo.legalIdentity`` no longer exists; use the ``ourIdentity`` property of the flow instead.
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``FlowLogic.ourIdentity`` has been introduced as a shortcut for retrieving our identity in a flow
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* ``getAnyNotary`` is gone - use ``serviceHub.networkMapCache.notaryIdentities[0]`` instead
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Note: ongoing work to support multiple notary identities is still in progress.
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* ``ServiceHub.networkMapUpdates`` is replaced by ``ServiceHub.networkMapFeed``
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* ``ServiceHub.partyFromX500Name`` is replaced by ``ServiceHub.wellKnownPartyFromX500Name``
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Note: A "well known" party is one that isn't anonymous and this change was motivated by the confidential identities work.
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RPC Client
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^^^^^^^^^^
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* Missing API methods on `CordaRPCOps` interface.
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* Calls to ``verifiedTransactionsFeed()`` and ``verifiedTransactions()`` have been replaced with:
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``internalVerifiedTransactionsSnapshot()`` and ``internalVerifiedTransactionsFeed()`` respectively
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This is in preparation for the planned integration of Intel SGX™, which will encrypt the transactions feed.
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Apps that use this API will not work on encrypted ledgers: you should probably be using the vault query API instead.
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* Accessing the `networkMapCache` via ``services.nodeInfo().legalIdentities`` returns a list of identities.
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The first element in the list is the Party object referring to a node's single identity.
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This is in preparation for allowing a node to host multiple separate identities in future.
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Testing
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^^^^^^^
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Please note that `Clauses` have been removed completely as of V1.0.
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We will be revisiting this capability in a future release.
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* CorDapps must be explicitly registered in ``MockNetwork`` unit tests.
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This is done by calling ``setCordappPackages``, an extension helper function in the ``net.corda.testing`` package,
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on the first line of your `@Before` method. This takes a variable number of `String` arguments which should be the
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package names of the CorDapps containing the contract verification code you wish to load.
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You should unset CorDapp packages in your `@After` method by using ``unsetCordappPackages()`` after `stopNodes()`.
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* CorDapps must be explicitly registered in ``DriverDSL`` and ``RPCDriverDSL`` integration tests.
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Similarly, you must also register package names of the CorDapps containing the contract verification code you wish to load
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using the ``extraCordappPackagesToScan: List<String>`` constructor parameter of the driver DSL.
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Finance
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^^^^^^^
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* `FungibleAsset` interface simplification.
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The ``FungibleAsset`` interface has been made simpler. The ``Commands`` grouping interface
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that included the ``Move``, ``Issue`` and ``Exit`` interfaces have all been removed, while the ``move`` function has
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been renamed to ``withNewOwnerAndAmount`` to be consistent with the ``withNewOwner`` function of the ``OwnableState``.
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The following errors may be reported:
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* override nothing (FungibleAsset): `move`
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* not a subtype of overridden FungibleAsset: `withNewOwner`
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* no longer need to override `override val contractHash: SecureHash? = null`
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* need to override `override val contract: Class<out Contract>? = null`
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Miscellaneous
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^^^^^^^^^^^^^
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* ``args[0].parseNetworkHostAndPort()`` becomes ``NetworkHostAndPort.parse(args[0])``
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* There is no longer a ``NodeInfo.advertisedServices`` property.
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The concept of advertised services has been removed from Corda. This is because it was vaguely defined and real world
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apps would not typically select random, unknown counterparties from the network map based on self-declared capabilities.
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We will introduce a replacement for this functionality, business networks, in a future release.
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For now, your should retrieve the service by legal name using ``NetworkMapCache.getNodeByLegalName``.
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Gotchas
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^^^^^^^
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* Beware to use the correct identity when issuing cash:
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The 3rd parameter to ``CashIssueFlow`` should be the ** notary ** (not the ** node identity **)
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:ref:`From Milestone 13 <changelog_m13>`
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Core data structures
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^^^^^^^^^^^^^^^^^^^^
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* `TransactionBuilder` changes.
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Use convenience class ``StateAndContract`` instead of ``TransactionBuilder.withItems()`` for passing
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around a state and its contract.
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* Transaction building DSL changes:
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* now need to explicitly pass the ContractClassName into all inputs and outputs.
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* `ContractClassName` refers to the class containing the “verifier” method.
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* Contract verify method signature change.
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``override fun verify(tx: TransactionForContract)`` becomes ``override fun verify(tx: LedgerTransaction)``
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* No longer need to override Contract ``contract()`` function.
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Node services (ServiceHub)
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^^^^^^^^^^^^^^^^^^^^^^^^^^
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* ServiceHub API method changes.
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``services.networkMapUpdates().justSnapshot`` becomes ``services.networkMapSnapshot()``
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Configuration
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^^^^^^^^^^^^^
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* No longer need to define ``CordaPluginRegistry`` and configure ``requiredSchemas``
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Custom contract schemas are automatically detected at startup time by class path scanning.
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For testing purposes, use the ``SchemaService`` method to register new custom schemas:
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eg. ``services.schemaService.registerCustomSchemas(setOf(YoSchemaV1))``
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Identity
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^^^^^^^^
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* Party names are now ``CordaX500Name``, not ``X500Name``
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``CordaX500Name`` specifies a predefined set of mandatory (organisation, locality, country)
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and optional fields (commonName, organisationUnit, state) with validation checking.
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Use new builder CordaX500Name.build(X500Name(target)) or, preferably, explicitly define X500Name parameters using
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``CordaX500Name`` constructor.
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Testing
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^^^^^^^
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* MockNetwork Testing.
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Mock nodes in node tests are now of type ``StartedNode<MockNode>``, rather than ``MockNode``
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MockNetwork now returns a BasketOf(<StartedNode<MockNode>>)
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Must call internals on StartedNode to get MockNode:
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a = nodes.partyNodes[0].internals
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b = nodes.partyNodes[1].internals
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* Host and Port change.
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Use string helper function ``parseNetworkHostAndPort()`` to parse a URL on startup.
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eg. ``val hostAndPort = args[0].parseNetworkHostAndPort()``
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* The node driver parameters for starting a node have been reordered, and the node’s name needs to be given as an
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``CordaX500Name``, instead of using ``getX509Name``
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:ref:`From Milestone 12 (First Public Beta) <changelog_m12>`
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Core data structures
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^^^^^^^^^^^^^^^^^^^^
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* Transaction building
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You no longer need to specify the type of a ``TransactionBuilder`` as ``TransactionType.General``
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``TransactionType.General.Builder(notary)`` becomes ``TransactionBuilder(notary)``
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Build
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^^^^^
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* Gradle dependency reference changes.
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Module name has changed to include `corda` in the artifacts jar name:
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.. sourcecode:: shell
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compile "net.corda:core:$corda_release_version" -> compile "net.corda:corda-core:$corda_release_version"
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compile "net.corda:finance:$corda_release_version" -> compile "net.corda:corda-finance:$corda_release_version"
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compile "net.corda:jackson:$corda_release_version" -> compile "net.corda:corda-jackson:$corda_release_version"
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compile "net.corda:node:$corda_release_version" -> compile "net.corda:corda-node:$corda_release_version"
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compile "net.corda:rpc:$corda_release_version" -> compile "net.corda:corda-rpc:$corda_release_version"
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Node services (ServiceHub)
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^^^^^^^^^^^^^^^^^^^^^^^^^^
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* ServiceHub API changes.
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``services.networkMapUpdates()`` becomes ``services.networkMapFeed()``
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``services.getCashBalances()`` becomes a helper method within the **finance** module contracts package: ``net.corda.finance.contracts.getCashBalances``
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Finance
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^^^^^^^
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* Financial asset contracts (Cash, CommercialPaper, Obligations) are now a standalone CorDapp within the **finance** module.
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Need to import from respective package within `finance` module:
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eg. ``net.corda.finance.contracts.asset.Cash``
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Likewise, need to import associated asset flows from respective package within `finance` module:
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eg. ``net.corda.finance.flows.CashIssueFlow``
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``net.corda.finance.flows.CashIssueAndPaymentFlow``
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``net.corda.finance.flows.CashExitFlow``
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* Moved ``finance`` gradle project files into a ``net.corda.finance`` package namespace.
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This may require adjusting imports of Cash flow references and also of ``StartFlow`` permission in ``gradle.build`` files.
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Associated flows (`Cash*Flow`, `TwoPartyTradeFlow`, `TwoPartyDealFlow`) must now be imported from this package.
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