Package io.axoniq.framework.springcloud.command

@NullMarked package io.axoniq.framework.springcloud.command

The command side of the Spring Cloud connector: the connector distributing commands, and the HTTP transport carrying them between members of the cluster.

SpringCloudCommandBusConnector picks the member owning a command's routing key, and either invokes this application's own handler when that member is the local one, or hands the command to the transport. A command is one request answered by one reply: CommandDispatchRequest and CommandDispatchReply are its wire format, RemoteCommandDispatcher sends it, SpringCloudCommandController receives it, and IncomingCommandInvoker turns a received request into an invocation of the local handler and its result back into a reply.

Related Packages

Package	Description
io.axoniq.framework.springcloud	Wiring of the connectors that distribute commands and queries across nodes discovered through Spring Cloud Discovery, without an Axon Server.
io.axoniq.framework.springcloud.discovery	Discovery of the capabilities of the ServiceInstances reported by Spring Cloud Discovery.
io.axoniq.framework.springcloud.query	The query side of the Spring Cloud connector: the connector distributing queries and subscription queries, and the HTTP transport carrying them between members of the cluster.
io.axoniq.framework.springcloud.routing	Routing primitives for the Spring Cloud connector: the cluster members, their capabilities, and the ConsistentHash ring that picks one for a given routing key.
io.axoniq.framework.springcloud.shared	The parts of the Spring Cloud connector that the command side and the query side both rely on.

Class	Description
CommandDispatchReply	The wire representation of the outcome of handling a command on another member of the cluster.
CommandDispatchRequest	The wire representation of a CommandMessage being sent to another member of the cluster.
CommandErrorCode	The kinds of failure a CommandDispatchReply can report, and the classification a receiving member needs to reconstruct an equivalent exception.
HttpRemoteCommandDispatcher	The RemoteCommandDispatcher that sends commands to other members over HTTP, and reads back their outcome.
IncomingCommandInvoker	Turns a CommandDispatchRequest received from another member into an invocation of this application's local command handler, and its outcome back into a CommandDispatchReply.
MemberUnreachableException	Reports that a command could not be delivered to the Member it was routed to, or that the member's reply could not be read back.
RemoteCommandDispatcher	Sends a command to another member of the cluster and reports back the outcome of handling it there.
SpringCloudCommandBusConnector	A CommandBusConnector distributing commands across the nodes discovered through Spring Cloud Discovery.
SpringCloudCommandController	Receives commands sent by other members of the cluster over HTTP.