org.axonframework.axonserver.connector.event.axon

Class AxonServerEventStore

java.lang.Object

org.axonframework.eventhandling.AbstractEventBus

org.axonframework.eventsourcing.eventstore.AbstractEventStore

org.axonframework.axonserver.connector.event.axon.AxonServerEventStore

All Implemented Interfaces:

org.axonframework.eventhandling.DomainEventSequenceAware, org.axonframework.eventhandling.EventBus, org.axonframework.eventsourcing.eventstore.EventStore, org.axonframework.messaging.MessageDispatchInterceptorSupport<org.axonframework.eventhandling.EventMessage<?>>, org.axonframework.messaging.StreamableMessageSource<org.axonframework.eventhandling.TrackedEventMessage<?>>, org.axonframework.messaging.SubscribableMessageSource<org.axonframework.eventhandling.EventMessage<?>>

public class AxonServerEventStore
extends org.axonframework.eventsourcing.eventstore.AbstractEventStore

Axon EventStore implementation that connects to the AxonIQ AxonServer Server to store and retrieve Events.

Since:

4.0

Author:

Zoltan Altfatter, Marc Gathier, Allard Buijze

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	AxonServerEventStore.Builder Builder class to instantiate a AxonServerEventStore.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AxonServerEventStore(AxonServerEventStore.Builder builder) Instantiate a AxonServerEventStore based on the fields contained in the AxonServerEventStore.Builder.

Method Summary

Modifier and Type	Method and Description
static AxonServerEventStore.Builder	builder() Instantiate a Builder to be able to create a AxonServerEventStore.
org.axonframework.messaging.StreamableMessageSource<org.axonframework.eventhandling.TrackedEventMessage<?>>	createStreamableMessageSourceForContext(String context) Creates a StreamableMessageSource that streams events from the given context, rather than the default context the application was configured to connect to.
protected Optional<org.axonframework.eventhandling.DomainEventMessage<?>>	handleSnapshotReadingError(String aggregateIdentifier, Throwable e)
org.axonframework.eventhandling.TrackingEventStream	openStream(org.axonframework.eventhandling.TrackingToken trackingToken)
QueryResultStream	query(String query, boolean liveUpdates)
org.axonframework.eventsourcing.eventstore.DomainEventStream	readEvents(String aggregateIdentifier)
protected org.axonframework.axonserver.connector.event.axon.AxonServerEventStore.AxonIQEventStorageEngine	storageEngine()

Methods inherited from class org.axonframework.eventsourcing.eventstore.AbstractEventStore

createHeadToken, createTailToken, createTokenAt, lastSequenceNumberFor, prepareCommit, readEvents, stagedDomainEventMessages, storeSnapshot

Methods inherited from class org.axonframework.eventhandling.AbstractEventBus

afterCommit, commit, intercept, publish, queuedMessages, registerDispatchInterceptor, subscribe

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.axonframework.eventhandling.EventBus

publish, publish

Methods inherited from interface org.axonframework.messaging.SubscribableMessageSource

subscribe

Methods inherited from interface org.axonframework.messaging.MessageDispatchInterceptorSupport

registerDispatchInterceptor

Methods inherited from interface org.axonframework.messaging.StreamableMessageSource

createTokenSince

Constructor Detail

AxonServerEventStore

protected AxonServerEventStore(AxonServerEventStore.Builder builder)

Instantiate a AxonServerEventStore based on the fields contained in the AxonServerEventStore.Builder.

Will assert that the EventStorageEngine is set. If not, the AxonServerConfiguration and AxonServerConnectionManager should minimally be provided to create an AxonServer specific EventStorageEngine implementation. If either of these null assertions fail, an AxonConfigurationException will be thrown.

Parameters:

builder - the AxonServerEventStore.Builder used to instantiate a AxonServerEventStore instance

Method Detail

builder

public static AxonServerEventStore.Builder builder()

Instantiate a Builder to be able to create a AxonServerEventStore.

The main goal of this Builder is to instantiate an AxonServer specific EventStorageEngine. The properties which may be provided through this Builder are thus all used to end up with that EventStorageEngine implementation. An EventStorageEngine may be provided directly however, although we encourage the usage of the AxonServerEventStore.Builder.configuration and AxonServerEventStore.Builder.axonServerConnectionManager functions to let it be created.

The EventUpcaster is defaulted to a NoOpEventUpcaster and the SpanFactory is defaulted to a NoOpSpanFactory.

The event and snapshot Serializer, AxonServerConfiguration and AxonServerConnectionManager are hard requirements if no EventStorageEngine is provided directly.

Returns:

a Builder to be able to create a AxonServerEventStore

openStream

public org.axonframework.eventhandling.TrackingEventStream openStream(org.axonframework.eventhandling.TrackingToken trackingToken)

query

public QueryResultStream query(String query,
                               boolean liveUpdates)

storageEngine

protected org.axonframework.axonserver.connector.event.axon.AxonServerEventStore.AxonIQEventStorageEngine storageEngine()

Overrides:

storageEngine in class org.axonframework.eventsourcing.eventstore.AbstractEventStore

createStreamableMessageSourceForContext

public org.axonframework.messaging.StreamableMessageSource<org.axonframework.eventhandling.TrackedEventMessage<?>> createStreamableMessageSourceForContext(String context)

Creates a StreamableMessageSource that streams events from the given context, rather than the default context the application was configured to connect to.

Parameters:

context - the name of the context to create a message source for

Returns:

a StreamableMessageSource of TrackedEventMessages tied to the given context

handleSnapshotReadingError

protected Optional<org.axonframework.eventhandling.DomainEventMessage<?>> handleSnapshotReadingError(String aggregateIdentifier,
                                                                                                     Throwable e)

Overrides:

handleSnapshotReadingError in class org.axonframework.eventsourcing.eventstore.AbstractEventStore

readEvents

public org.axonframework.eventsourcing.eventstore.DomainEventStream readEvents(String aggregateIdentifier)

Specified by:

readEvents in interface org.axonframework.eventsourcing.eventstore.EventStore

Overrides:

readEvents in class org.axonframework.eventsourcing.eventstore.AbstractEventStore