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CORDA-296: added rpc that returns an observable for node state (#2004)

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* CORDA-296: added rpc that returns an observable for node state; used to let rpc clients know that the know is about to shut down

* replaced node shut down observation String with enum
This commit is contained in:
bpaunescu
2017-11-08 12:44:10 +00:00
committed by GitHub
parent c7ec9ad8ac
commit 7d1f7ab53d
7 changed files with 59 additions and 0 deletions
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9
core/src/main/kotlin/net/corda/core/messaging/CordaRPCOps.kt
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@ -196,6 +196,10 @@ interface CordaRPCOps : RPCOps {
/** Returns Node's NodeInfo, assuming this will not change while the node is running. */
fun nodeInfo(): NodeInfo
/** Returns and [Observable] object with future states of the node. */
@RPCReturnsObservables
fun nodeStateObservable(): Observable<NodeState>
/**
* Returns network's notary identities, assuming this will not change while the node is running.
*
@ -428,3 +432,8 @@ inline fun <T, A, B, C, D, E, F, reified R : FlowLogic<T>> CordaRPCOps.startTrac
*/
@CordaSerializable
data class DataFeed<out A, B>(val snapshot: A, val updates: Observable<B>)
@CordaSerializable
enum class NodeState {
SHUTTING_DOWN
}

5
core/src/main/kotlin/net/corda/core/node/ServiceHub.kt
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@ -8,11 +8,13 @@ import net.corda.core.crypto.SignableData
import net.corda.core.crypto.SignatureMetadata
import net.corda.core.crypto.TransactionSignature
import net.corda.core.flows.ContractUpgradeFlow
import net.corda.core.messaging.NodeState
import net.corda.core.node.services.*
import net.corda.core.serialization.SerializeAsToken
import net.corda.core.transactions.FilteredTransaction
import net.corda.core.transactions.SignedTransaction
import net.corda.core.transactions.TransactionBuilder
import rx.Observable
import java.security.PublicKey
import java.sql.Connection
import java.time.Clock
@ -138,6 +140,9 @@ interface ServiceHub : ServicesForResolution {
/** The [NodeInfo] object corresponding to our own entry in the network map. */
val myInfo: NodeInfo
/** The [Observable] object used to communicate to RPC clients the state of the node. */
val myNodeStateObservable: Observable<NodeState>
/**
* Return the singleton instance of the given Corda service type. This is a class that is annotated with
* [CordaService] and will have automatically been registered by the node.