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RPC changes (#3697)
* Eliminate un-necessary reference to Kryo in the comment * RPC documentation update. * Rename RpcClientObservableSerializer into RpcClientObservableDeSerializer
This commit is contained in:
Viktor Kolomeyko
GitHub
parent
40b922c1f2
commit
c24d916f5a
@ -10,7 +10,7 @@ import com.google.common.util.concurrent.ThreadFactoryBuilder
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import net.corda.client.rpc.CordaRPCClientConfiguration
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import net.corda.client.rpc.RPCException
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import net.corda.client.rpc.RPCSinceVersion
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import net.corda.client.rpc.internal.serialization.amqp.RpcClientObservableSerializer
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import net.corda.client.rpc.internal.serialization.amqp.RpcClientObservableDeSerializer
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import net.corda.core.context.Actor
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import net.corda.core.context.Trace
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import net.corda.core.context.Trace.InvocationId
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@ -155,7 +155,7 @@ class RPCClientProxyHandler(
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private val observablesToReap = ThreadBox(object {
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var observables = ArrayList<InvocationId>()
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})
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private val serializationContextWithObservableContext = RpcClientObservableSerializer.createContext(serializationContext, observableContext)
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private val serializationContextWithObservableContext = RpcClientObservableDeSerializer.createContext(serializationContext, observableContext)
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private fun createRpcObservableMap(): RpcObservableMap {
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val onObservableRemove = RemovalListener<InvocationId, UnicastSubject<Notification<*>>> { key, _, cause ->
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@ -559,7 +559,7 @@ private typealias RpcReplyMap = ConcurrentHashMap<InvocationId, SettableFuture<A
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private typealias CallSiteMap = ConcurrentHashMap<InvocationId, Throwable?>
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/**
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* Holds a context available during Kryo deserialisation of messages that are expected to contain Observables.
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* Holds a context available during de-serialisation of messages that are expected to contain Observables.
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*
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* @param observableMap holds the Observables that are ultimately exposed to the user.
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* @param hardReferenceStore holds references to Observables we want to keep alive while they are subscribed to.
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@ -14,7 +14,6 @@ import net.corda.serialization.internal.amqp.AccessOrderLinkedHashMap
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import net.corda.serialization.internal.amqp.SerializerFactory
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import net.corda.serialization.internal.amqp.amqpMagic
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import net.corda.serialization.internal.amqp.custom.RxNotificationSerializer
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import java.util.concurrent.ConcurrentHashMap
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/**
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* When set as the serialization scheme for a process, sets it to be the Corda AMQP implementation.
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@ -54,7 +53,7 @@ class AMQPClientSerializationScheme(
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override fun rpcClientSerializerFactory(context: SerializationContext): SerializerFactory {
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return SerializerFactory(context.whitelist, context.deserializationClassLoader, context.lenientCarpenterEnabled).apply {
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register(RpcClientObservableSerializer)
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register(RpcClientObservableDeSerializer)
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register(RpcClientCordaFutureSerializer(this))
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register(RxNotificationSerializer(this))
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}
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@ -17,11 +17,11 @@ import java.util.concurrent.atomic.AtomicInteger
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import javax.transaction.NotSupportedException
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/**
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* Serializer for Rx[Observable] instances for the RPC Client library. Can only be used to deserialize such objects,
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* just as the corresponding RPC server side code can only serialize them. Observables are only notionally serialized,
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* De-serializer for Rx[Observable] instances for the RPC Client library. Can only be used to deserialize such objects,
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* just as the corresponding RPC server side code ([RpcServerObservableSerializer]) can only serialize them. Observables are only notionally serialized,
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* what is actually sent is a reference to the observable that can then be subscribed to.
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*/
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object RpcClientObservableSerializer : CustomSerializer.Implements<Observable<*>>(Observable::class.java) {
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object RpcClientObservableDeSerializer : CustomSerializer.Implements<Observable<*>>(Observable::class.java) {
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private object RpcObservableContextKey
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fun createContext(
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@ -83,7 +83,7 @@ object RpcClientObservableSerializer : CustomSerializer.Implements<Observable<*>
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}
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val observableContext =
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context.properties[RpcClientObservableSerializer.RpcObservableContextKey] as ObservableContext
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context.properties[RpcClientObservableDeSerializer.RpcObservableContextKey] as ObservableContext
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if (obj !is List<*>) throw NotSerializableException("Input must be a serialised list")
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if (obj.size != 2) throw NotSerializableException("Expecting two elements, have ${obj.size}")
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@ -275,9 +275,12 @@ will be freed automatically.
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printed to the logs and the observable will be unsubscribed for you. But don't rely on this, as garbage collection
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is non-deterministic.
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.. note:: Observables can only be used as return arguments of an RPC call. It is not currently possible to pass
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Observables as parameters to the RPC methods.
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Futures
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-------
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A method can also return a ``ListenableFuture`` in its object graph and it will be treated in a similar manner to
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A method can also return a ``CordaFuture`` in its object graph and it will be treated in a similar manner to
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observables. Calling the ``cancel`` method on the future will unsubscribe it from any future value and release any resources.
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Versioning
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@ -65,6 +65,8 @@ class RpcServerObservableSerializer : CustomSerializer.Implements<Observable<*>>
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input: DeserializationInput,
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context: SerializationContext
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): Observable<*> {
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// Note: this type of server Serializer is never meant to read postings arriving from clients.
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// I.e. Observables cannot be used as parameters for RPC methods and can only be used as return values.
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throw UnsupportedOperationException()
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}
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@ -5,7 +5,7 @@ import com.github.benmanes.caffeine.cache.Cache
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import com.github.benmanes.caffeine.cache.Caffeine
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import com.github.benmanes.caffeine.cache.RemovalListener
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import com.nhaarman.mockito_kotlin.mock
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import net.corda.client.rpc.internal.serialization.amqp.RpcClientObservableSerializer
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import net.corda.client.rpc.internal.serialization.amqp.RpcClientObservableDeSerializer
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import net.corda.core.context.Trace
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import net.corda.core.internal.ThreadBox
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import net.corda.node.internal.serialization.testutils.AMQPRoundTripRPCSerializationScheme
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@ -90,7 +90,7 @@ class RoundTripObservableSerializerTests {
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val serverSerializationContext = RpcServerObservableSerializer.createContext(
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serializationContext, serverObservableContext)
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val clientSerializationContext = RpcClientObservableSerializer.createContext(
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val clientSerializationContext = RpcClientObservableDeSerializer.createContext(
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serializationContext, clientObservableContext).withProperty(RPCApi.RpcRequestOrObservableIdKey, id)
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@ -1,6 +1,6 @@
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package net.corda.node.internal.serialization.testutils
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import net.corda.client.rpc.internal.serialization.amqp.RpcClientObservableSerializer
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import net.corda.client.rpc.internal.serialization.amqp.RpcClientObservableDeSerializer
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import net.corda.core.context.Trace
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import net.corda.core.serialization.ClassWhitelist
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import net.corda.core.serialization.SerializationContext
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@ -29,7 +29,7 @@ class AMQPRoundTripRPCSerializationScheme(
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) {
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override fun rpcClientSerializerFactory(context: SerializationContext): SerializerFactory {
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return SerializerFactory(AllWhitelist, javaClass.classLoader).apply {
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register(RpcClientObservableSerializer)
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register(RpcClientObservableDeSerializer)
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}
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}
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@ -45,7 +45,7 @@ class AMQPRoundTripRPCSerializationScheme(
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fun rpcClientSerializerFactory(observableContext: ClientObservableContext, id: Trace.InvocationId) =
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rpcClientSerializerFactory(
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RpcClientObservableSerializer.createContext(serializationContext, observableContext)
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RpcClientObservableDeSerializer.createContext(serializationContext, observableContext)
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.withProperty(RPCApi.RpcRequestOrObservableIdKey, id))
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fun rpcServerSerializerFactory(observableContext: TestObservableContext) =
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