corda / net.corda.node.services.messaging / ArtemisMessagingComponent

# ArtemisMessagingComponent

`abstract class ArtemisMessagingComponent : SingletonSerializeAsToken`

The base class for Artemis services that defines shared data structures and SSL transport configuration.

### Types

ArtemisAddress | `interface ArtemisAddress : MessageRecipients`
ArtemisPeerAddress | `interface ArtemisPeerAddress : ArtemisAddress, SingleMessageRecipient`
ConnectionDirection | `sealed class ConnectionDirection`
NetworkMapAddress | `data class NetworkMapAddress : SingleMessageRecipient, ArtemisPeerAddress`
NodeAddress | `data class NodeAddress : ArtemisPeerAddress` This is the class used to implement SingleMessageRecipient, for now. Note that in future this class may change or evolve and code that relies upon it being a simple host/port may not function correctly. For instance it may contain onion routing data.
ServiceAddress | `data class ServiceAddress : ArtemisAddress, MessageRecipientGroup` ServiceAddress implements MessageRecipientGroup. It holds a queue associated with a service advertised by zero or more nodes. Each advertising node has an associated consumer.

### Constructors

<init> | `ArtemisMessagingComponent()` The base class for Artemis services that defines shared data structures and SSL transport configuration.

### Properties

config | `abstract val config: SSLConfiguration?` The config object is used to pass in the passwords for the certificate KeyStore and TrustStore

### Functions

checkStorePasswords | `fun checkStorePasswords(): Unit` Returns nothing if the keystore was opened OK or throws if not. Useful to check the password, as unfortunately Artemis tends to bury the exception when the password is wrong.
expectedOnDefaultFileSystem | `fun Path.expectedOnDefaultFileSystem(): Unit`
tcpTransport | `fun tcpTransport(direction: ConnectionDirection, host: String, port: Int, enableSSL: Boolean = true): TransportConfiguration`

### Inherited Functions

toToken | `open fun toToken(context: SerializeAsTokenContext): SerializationToken`

### Companion Object Properties

CLIENTS_PREFIX | `const val CLIENTS_PREFIX: String`
INTERNAL_PREFIX | `const val INTERNAL_PREFIX: String`
NETWORK_MAP_QUEUE | `const val NETWORK_MAP_QUEUE: String`
NODE_USER | `const val NODE_USER: String`
NOTIFICATIONS_ADDRESS | `const val NOTIFICATIONS_ADDRESS: String`
P2P_QUEUE | `const val P2P_QUEUE: String`
PEERS_PREFIX | `const val PEERS_PREFIX: String`
PEER_USER | `const val PEER_USER: String`
RPC_QUEUE_REMOVALS_QUEUE | `const val RPC_QUEUE_REMOVALS_QUEUE: String`
RPC_REQUESTS_QUEUE | `const val RPC_REQUESTS_QUEUE: String`
SERVICES_PREFIX | `const val SERVICES_PREFIX: String`
VERIFY_PEER_COMMON_NAME | `const val VERIFY_PEER_COMMON_NAME: String`

### Companion Object Functions

toHostAndPort | `fun toHostAndPort(target: MessageRecipients): HostAndPort` Assuming the passed in target address is actually an ArtemisAddress will extract the host and port of the node. This should only be used in unit tests and the internals of the messaging services to keep addressing opaque for the future. N.B. Marked as JvmStatic to allow use in the inherited classes.

### Inheritors

ArtemisMessagingServer | `class ArtemisMessagingServer : ArtemisMessagingComponent` This class configures and manages an Apache Artemis message queue broker.
CordaRPCClient | `class CordaRPCClient : Closeable, ArtemisMessagingComponent` An RPC client connects to the specified server and allows you to make calls to the server that perform various useful tasks. See the documentation for proxy or review the docsite to learn more about how this API works.
NodeMessagingClient | `class NodeMessagingClient : ArtemisMessagingComponent, MessagingServiceInternal` This class implements the MessagingService API using Apache Artemis, the successor to their ActiveMQ product. Artemis is a message queue broker and here we run a client connecting to the specified broker instance ArtemisMessagingServer. It's primarily concerned with peer-to-peer messaging.