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/*
* Copyright 2019 Scalified
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.scalified.axonframework.cdi;
import com.scalified.axonframework.cdi.api.*;
import com.scalified.axonframework.cdi.api.annotation.Aggregate;
import com.scalified.axonframework.cdi.api.annotation.AxonComponent;
import com.scalified.axonframework.cdi.api.annotation.Saga;
import com.scalified.axonframework.cdi.commons.CdiUtils;
import com.scalified.axonframework.cdi.commons.ReflectionUtils;
import com.scalified.axonframework.cdi.component.Component;
import com.scalified.axonframework.cdi.component.ComponentResolver;
import com.scalified.axonframework.cdi.component.ConfigurableComponentResolver;
import com.scalified.axonframework.cdi.configuration.LazyRetrievedModuleConfiguration;
import com.scalified.axonframework.cdi.configuration.transaction.JtaTransactionManager;
import com.scalified.axonframework.cdi.event.AxonConfiguredEvent;
import com.scalified.axonframework.cdi.event.AxonStartedEvent;
import com.scalified.axonframework.cdi.event.AxonStoppedEvent;
import lombok.AccessLevel;
import lombok.Getter;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.ArrayUtils;
import org.apache.commons.lang3.StringUtils;
import org.apache.commons.lang3.reflect.TypeUtils;
import org.axonframework.commandhandling.CommandBus;
import org.axonframework.commandhandling.CommandHandler;
import org.axonframework.common.AxonConfigurationException;
import org.axonframework.common.transaction.TransactionManager;
import org.axonframework.config.*;
import org.axonframework.eventhandling.EventBus;
import org.axonframework.eventhandling.EventHandler;
import org.axonframework.eventsourcing.eventstore.EventStorageEngine;
import org.axonframework.messaging.MessageDispatchInterceptor;
import org.axonframework.messaging.correlation.CorrelationDataProvider;
import org.axonframework.messaging.interceptors.CorrelationDataInterceptor;
import org.axonframework.modelling.saga.ResourceInjector;
import org.axonframework.queryhandling.QueryBus;
import org.axonframework.queryhandling.QueryHandler;
import org.axonframework.queryhandling.QueryUpdateEmitter;
import org.axonframework.serialization.Serializer;
import org.axonframework.serialization.upcasting.event.EventUpcaster;
import javax.enterprise.context.ApplicationScoped;
import javax.enterprise.event.Observes;
import javax.enterprise.inject.spi.*;
import java.lang.reflect.Type;
import java.util.*;
import java.util.function.Consumer;
import java.util.function.Function;
import java.util.stream.Collectors;
import static java.util.Objects.isNull;
import static java.util.Objects.nonNull;
/**
* {@link Extension} for Axon configuration
*
* @author shell
* @since 2019-04-12
*/
@Slf4j
@ApplicationScoped
public class CdiExtension implements Extension {
/**
* Underlying {@code configurer}
*/
private Configurer configurer = DefaultConfigurer.defaultConfiguration(false);
/**
* Underlying {@code configuration}
*/
@Getter(AccessLevel.PACKAGE)
private Configuration configuration;
/**
* Axon configuration properties component
*/
private Component axonPropertiesComponent;
/**
* {@link org.axonframework.modelling.command.Aggregate} types
*/
private List> aggregateTypes = new LinkedList<>();
/**
* Default {@link AggregateConfigurator} component
*/
private Component defaultAggregateConfiguratorComponent;
/**
* {@link AggregateConfigurator} components
*/
private Map, Component> aggregateConfiguratorComponents = new HashMap<>();
/**
* {@link org.axonframework.modelling.saga.Saga} types
*/
private List> sagaTypes = new LinkedList<>();
/**
* Default {@link SagaConfigurator} component
*/
private Component defaultSagaConfiguratorComponent;
/**
* {@link SagaConfigurator} components
*/
private Map, Component> sagaConfiguratorComponents = new HashMap<>();
/**
* {@link EventProcessingConfigurator} component
*/
private Component eventProcessingConfiguratorComponent;
/**
* {@link Serializer} components
*/
private Map serializerComponents = new HashMap<>();
/**
* CommandHandler types
*/
private List commandHandlerTypes = new LinkedList<>();
/**
* EventHandler types
*/
private List eventHandlerTypes = new LinkedList<>();
/**
* QueryHandler types
*/
private List queryHandlerTypes = new LinkedList<>();
/**
* {@link TransactionManager} component
*/
private Component transactionManagerComponent;
/**
* {@link CommandBus} component
*/
private Component commandBusComponent;
/**
* {@link EventStorageEngine} component
*/
private Component eventStorageEngineComponent;
/**
* {@link EventBus} component
*/
private Component eventBusComponent;
/**
* {@link QueryBus} component
*/
private Component queryBusComponent;
/**
* {@link ResourceInjector} component
*/
private Component resourceInjectorComponent;
/**
* {@link QueryUpdateEmitter} component
*/
private Component queryUpdateEmitterComponent;
/**
* {@link CommandDispatchInterceptor} components
*/
private List commandDispatchInterceptorComponents = new LinkedList<>();
/**
* {@link EventDispatchInterceptor} components
*/
private List eventDispatchInterceptorComponents = new LinkedList<>();
/**
* {@link EventUpcaster} components
*/
private List eventUpcasterComponents = new LinkedList<>();
/**
* {@link CorrelationDataProvider} components
*/
private List correlationDataProviderComponents = new LinkedList<>();
/**
* {@link ModuleConfiguration} components
*/
private List moduleConfigurationComponents = new LinkedList<>();
/**
* {@link ConfigurerModule} components
*/
private List configurerModuleComponents = new LinkedList<>();
/**
* Custom components
*/
private List customComponents = new LinkedList<>();
/**
* Processes the given {@link AxonProperties} annotated {@code type}
*
* @param processAnnotatedType to process
* @param {@link AxonProperties} type
*/
void processAxonPropertiesAnnotatedType(
@Observes ProcessAnnotatedType processAnnotatedType) {
Type type = processAnnotatedType.getAnnotatedType().getBaseType();
axonPropertiesComponent = new Component(type);
log.trace("Initialized AxonProperties component: {} ", axonPropertiesComponent);
}
/**
* Processes the given {@link AxonProperties} {@code processProducer}
*
* @param processProducer to process
* @param the bean class of the bean that declares the producer
* method or field
* @param {@link AxonProperties} type
*/
void processAxonPropertiesProducer(@Observes ProcessProducer processProducer) {
Producer producer = processProducer.getProducer();
AnnotatedMember annotatedMember = processProducer.getAnnotatedMember();
Type type = annotatedMember.getBaseType();
axonPropertiesComponent = new Component(type, producer);
log.trace("Initialized AxonProperties component: {} ", axonPropertiesComponent);
}
/**
* Processes the given {@code type} annotated with {@code Aggregate} annotation
*
* @param type {@link ProcessAnnotatedType} to process
* @param the class being annotated
*/
void processAggregateAnnotated(@Observes @WithAnnotations({Aggregate.class}) ProcessAnnotatedType type) {
Class aggregateType = type.getAnnotatedType().getJavaClass();
aggregateTypes.add(aggregateType);
log.trace("Initialized Aggregate class: {}", aggregateType);
}
/**
* Processes the given {@code type} annotated with {@code Saga} annotation
*
* @param type {@link ProcessAnnotatedType} to process
* @param the class being annotated
*/
void processSagaAnnotated(@Observes @WithAnnotations({Saga.class}) ProcessAnnotatedType type) {
Class sagaType = type.getAnnotatedType().getJavaClass();
sagaTypes.add(sagaType);
log.trace("Initialized Saga class: {}", sagaType);
}
/**
* Processes the given {@code processAnnotatedType} annotated with
* {@code AxonComponent} annotation
*
* @param processAnnotatedType {@link ProcessAnnotatedType} to process
* @param the class being annotated
*/
void processAxonComponentAnnotatedType(
@Observes @WithAnnotations({AxonComponent.class}) ProcessAnnotatedType processAnnotatedType) {
if (CdiUtils.hasAnnotation(processAnnotatedType, AxonComponent.class)) {
AnnotatedType annotatedType = processAnnotatedType.getAnnotatedType();
AxonComponent annotation = annotatedType.getAnnotation(AxonComponent.class);
Type type = annotatedType.getBaseType();
Component component = new Component(type);
initAxonComponent(annotation, component);
}
}
/**
* Processes the given {@code processProducer}
*
* @param processProducer {@link ProcessProducer} to process
* @param the bean class of the bean that declares the producer method or field
* @param the return type of the producer method or the type of the producer field
*/
void processAxonComponentProducer(@Observes ProcessProducer processProducer) {
if (CdiUtils.hasAnnotation(processProducer, AxonComponent.class)) {
Producer producer = processProducer.getProducer();
AnnotatedMember annotatedMember = processProducer.getAnnotatedMember();
AxonComponent annotation = annotatedMember.getAnnotation(AxonComponent.class);
Type type = annotatedMember.getBaseType();
Component component = new Component(type, producer);
initAxonComponent(annotation, component);
}
}
/**
* Initializes Axon {@code component} based on its type and the given
* {@code annotated} annotation initialization data
*
* @param annotation annotation use to obtain additional initialization data
* @param component component to initialize
*/
private void initAxonComponent(AxonComponent annotation, Component component) {
Type actualType = Optional.ofNullable(ReflectionUtils.getTypeArgument(component.getType(), Configurable.class))
.orElse(component.getType());
boolean initialized = false;
if (TypeUtils.isAssignable(actualType, AggregateConfigurator.class)) {
initialized = initAggregateConfiguratorComponent(annotation.ref(), component);
}
if (TypeUtils.isAssignable(actualType, SagaConfigurator.class)) {
initialized = initSagaConfiguratorComponent(annotation.ref(), component) || initialized;
}
if (TypeUtils.isAssignable(actualType, EventProcessingConfigurator.class)) {
initialized = initEventProcessingConfiguratorComponent(component) || initialized;
}
if (TypeUtils.isAssignable(actualType, Serializer.class)) {
initialized = initSerializerComponent(annotation.value(), component) || initialized;
}
if (ReflectionUtils.hasAnnotatedMethod(actualType, CommandHandler.class)) {
initialized = initCommandHandlerType(actualType) || initialized;
}
if (ReflectionUtils.hasAnnotatedMethod(actualType, EventHandler.class)) {
initialized = initEventHandlerType(actualType) || initialized;
}
if (ReflectionUtils.hasAnnotatedMethod(actualType, QueryHandler.class)) {
initialized = initQueryHandlerType(actualType) || initialized;
}
if (TypeUtils.isAssignable(actualType, TransactionManager.class)) {
initialized = initTransactionManagerComponent(component) || initialized;
}
if (TypeUtils.isAssignable(actualType, CommandBus.class)) {
initialized = initCommandBusComponent(component) || initialized;
}
if (TypeUtils.isAssignable(actualType, EventStorageEngine.class)) {
initialized = initEventStorageEngineComponent(component) || initialized;
}
if (TypeUtils.isAssignable(actualType, EventBus.class)) {
initialized = initEventBusComponent(component) || initialized;
}
if (TypeUtils.isAssignable(actualType, QueryBus.class)) {
initialized = initQueryBusComponent(component) || initialized;
}
if (TypeUtils.isAssignable(actualType, ResourceInjector.class)) {
initialized = initResourceInjectorComponent(component) || initialized;
}
if (TypeUtils.isAssignable(actualType, QueryUpdateEmitter.class)) {
initialized = initQueryUpdateEmitterComponent(component) || initialized;
}
if (TypeUtils.isAssignable(actualType, CommandDispatchInterceptor.class)) {
initialized = initCommandDispatchInterceptorComponent(component) || initialized;
}
if (TypeUtils.isAssignable(actualType, EventDispatchInterceptor.class)) {
initialized = initEventDispatchInterceptorComponent(component) || initialized;
}
if (TypeUtils.isAssignable(actualType, EventUpcaster.class)) {
initialized = initEventUpcasterComponent(component) || initialized;
}
if (TypeUtils.isAssignable(actualType, CorrelationDataProvider.class)) {
initialized = initCorrelationDataProviderComponent(component) || initialized;
}
if (TypeUtils.isAssignable(actualType, ModuleConfiguration.class)) {
initialized = initModuleConfigurationComponent(component) || initialized;
}
if (TypeUtils.isAssignable(actualType, ConfigurerModule.class)) {
initialized = initConfigurerModuleComponent(component) || initialized;
}
if (!initialized) {
initCustomComponent(component);
}
}
/**
* Initializes {@code defaultAggregateConfiguratorComponent} if the given
* {@code aggregateType} is not specific (default), otherwise adds the given
* {@code component} to the {@code aggregateConfiguratorComponents} by the given
* {@code aggregateType}
*
* @param aggregateType {@link org.axonframework.modelling.command.Aggregate} type
* @param component component to initialize
* @return {@code true} if the {@code component} was initialized, {@code false} otherwise
* @throws AxonConfigurationException in case of initialization error
*/
private boolean initAggregateConfiguratorComponent(Class aggregateType, Component component) {
if (!Objects.equals(Object.class, aggregateType)) {
if (aggregateConfiguratorComponents.containsKey(aggregateType)) {
throw new AxonConfigurationException(String.format("Multiple AggregateConfigurator components " +
"for the same '%s' aggregate declared", aggregateType));
}
aggregateConfiguratorComponents.put(aggregateType, component);
log.trace("Initialized AggregateConfigurator component: {}", component);
} else {
if (nonNull(defaultAggregateConfiguratorComponent)) {
throw new AxonConfigurationException("Multiple default AggregateConfigurator components " +
"declared. Please specify referenced aggregate to distinguish configurations");
}
defaultAggregateConfiguratorComponent = component;
log.trace("Initialized default AggregateConfigurator component: {}", defaultAggregateConfiguratorComponent);
}
return true;
}
/**
* Initializes {@code defaultSagaConfiguratorComponent} if the given {@code sagaType}
* is not specific (default), otherwise adds the given {@code component} to the
* {@code sagaConfiguratorComponents} by the given {@code sagaType}
*
* @param sagaType {@link org.axonframework.modelling.saga.Saga} type
* @param component component to initialize
* @return {@code true} if the {@code component} was initialized, {@code false} otherwise
* @throws AxonConfigurationException in case of initialization error
*/
private boolean initSagaConfiguratorComponent(Class sagaType, Component component) {
if (!Objects.equals(Object.class, sagaType)) {
if (sagaConfiguratorComponents.containsKey(sagaType)) {
throw new AxonConfigurationException(String.format("Multiple SagaConfigurator components " +
"for the same '%s' saga declared", sagaType));
}
sagaConfiguratorComponents.put(sagaType, component);
log.trace("Initialized SagaConfigurator component: {}", component);
} else {
if (nonNull(defaultSagaConfiguratorComponent)) {
throw new AxonConfigurationException("Multiple default SagaConfigurator components declared. " +
"Please specify referenced saga to distinguish configurations");
}
defaultSagaConfiguratorComponent = component;
log.trace("Initialized default SagaConfigurator component: {}", defaultSagaConfiguratorComponent);
}
return true;
}
/**
* Initializes {@code eventProcessingConfiguratorComponent} from the given
* {@code component}
*
* @param component component to initialize
* @return {@code true} if the {@code component} was initialized, {@code false} otherwise
* @throws AxonConfigurationException in case of initialization error
*/
private boolean initEventProcessingConfiguratorComponent(Component component) {
if (nonNull(eventProcessingConfiguratorComponent)) {
throw new AxonConfigurationException("Multiple EventProcessingConfigurator components declared");
}
eventProcessingConfiguratorComponent = component;
log.trace("Initialized EventProcessingConfigurator component: {}", eventProcessingConfiguratorComponent);
return true;
}
/**
* Adds the given {@code component} to {@code serializerComponents} by its
* {@code type}
*
* @param type {@link SerializerType} qualifier value
* @param component component to initialize
* @return {@code true} if the {@code component} was initialized, {@code false} otherwise
* @throws AxonConfigurationException in case of initialization error
*/
private boolean initSerializerComponent(String type, Component component) {
String assignedSerializerType = StringUtils.isBlank(type) ? SerializerType.DEFAULT : type;
String[] serializerTypes = new String[]{SerializerType.DEFAULT, SerializerType.EVENT, SerializerType.MESSAGE};
if (!ArrayUtils.contains(serializerTypes, assignedSerializerType)) {
throw new AxonConfigurationException(String.format("Unknown Serializer '%s' name declared. " +
"Please choose one among SerializerType", assignedSerializerType));
}
if (serializerComponents.containsKey(assignedSerializerType)) {
throw new AxonConfigurationException(String.format("Multiple Serializer components declared " +
"for %s serializer", assignedSerializerType));
}
serializerComponents.put(assignedSerializerType, component);
log.trace("Initialized Serializer component: {}", component);
return true;
}
/**
* Adds the given CommandHandler {@code type} to {@code commandHandlerTypes}
*
* @param type CommandHandler type to add
* @return {@code true} if the CommandHandler {@code type} was added,
* {@code false} otherwise
*/
private boolean initCommandHandlerType(Type type) {
commandHandlerTypes.add(type);
log.trace("Initialized CommandHandler class: {}", type);
return true;
}
/**
* Adds the given EventHandler {@code type} to {@code eventHandlerTypes}
*
* @param type EventHandler type to add
* @return {@code true} if the EventHandler {@code type} was added,
* {@code false} otherwise
*/
private boolean initEventHandlerType(Type type) {
eventHandlerTypes.add(type);
log.trace("Initialized EventHandler class: {}", type);
return true;
}
/**
* Adds the given QueryHandler {@code type} to {@code queryHandlerTypes}
*
* @param type QueryHandler type to add
* @return {@code true} if the QueryHandler {@code type} was added,
* {@code false} otherwise
*/
private boolean initQueryHandlerType(Type type) {
queryHandlerTypes.add(type);
log.trace("Initialized QueryHandler class: {}", type);
return true;
}
/**
* Initializes {@code transactionManagerComponent} from the given {@code component}
*
* @param component component to initialize
* @return {@code true} if the {@code component} was initialized, {@code false} otherwise
* @throws AxonConfigurationException in case of initialization error
*/
private boolean initTransactionManagerComponent(Component component) {
if (nonNull(transactionManagerComponent)) {
throw new AxonConfigurationException("Multiple TransactionManager components declared");
}
transactionManagerComponent = component;
log.trace("Initialized TransactionManager component: {}", component);
return true;
}
/**
* Initializes {@code commandBusComponent} from the given {@code component}
*
* @param component component to initialize
* @return {@code true} if the {@code component} was initialized, {@code false} otherwise
* @throws AxonConfigurationException in case of initialization error
*/
private boolean initCommandBusComponent(Component component) {
if (nonNull(commandBusComponent)) {
throw new AxonConfigurationException("Multiple CommandBus components declared");
}
commandBusComponent = component;
log.trace("Initialized CommandBus component: {}", component);
return true;
}
/**
* Initializes {@code eventStorageEngineComponent} from the given {@code component}
*
* @param component component to initialize
* @return {@code true} if the {@code component} was initialized, {@code false} otherwise
* @throws AxonConfigurationException in case of initialization error
*/
private boolean initEventStorageEngineComponent(Component component) {
if (nonNull(eventStorageEngineComponent)) {
throw new AxonConfigurationException("Multiple EventStorageEngine components declared");
}
eventStorageEngineComponent = component;
log.trace("Initialized EventStorageEngine component: {}", component);
return true;
}
/**
* Initializes {@code eventBusComponent} from the given {@code component}
*
* @param component component to initialize
* @return {@code true} if the {@code component} was initialized, {@code false} otherwise
* @throws AxonConfigurationException in case of initialization error
*/
private boolean initEventBusComponent(Component component) {
if (nonNull(eventBusComponent)) {
throw new AxonConfigurationException("Multiple EventBus components declared");
}
eventBusComponent = component;
log.trace("Initialized EventBus component: {}", component);
return true;
}
/**
* Initializes {@code queryBusComponent} from the given {@code component}
*
* @param component component to initialize
* @return {@code true} if the {@code component} was initialized, {@code false} otherwise
* @throws AxonConfigurationException in case of initialization error
*/
private boolean initQueryBusComponent(Component component) {
if (nonNull(queryBusComponent)) {
throw new AxonConfigurationException("Multiple QueryBus components declared");
}
queryBusComponent = component;
log.trace("Initialized QueryBus component: {}", component);
return true;
}
/**
* Initializes {@code resourceInjectorComponent} from the given {@code component}
*
* @param component component to initialize
* @return {@code true} if the {@code component} was initialized, {@code false} otherwise
* @throws AxonConfigurationException in case of initialization error
*/
private boolean initResourceInjectorComponent(Component component) {
if (nonNull(resourceInjectorComponent)) {
throw new AxonConfigurationException("Multiple ResourceInjector components declared");
}
resourceInjectorComponent = component;
log.trace("Initialized ResourceInjector component: {}", component);
return true;
}
/**
* Initializes {@code queryUpdateEmitterComponent} from the given {@code component}
*
* @param component component to initialize
* @return {@code true} if the {@code component} was initialized, {@code false} otherwise
* @throws AxonConfigurationException in case of initialization error
*/
private boolean initQueryUpdateEmitterComponent(Component component) {
if (nonNull(queryUpdateEmitterComponent)) {
throw new AxonConfigurationException("Multiple QueryUpdateEmitter components declared");
}
queryUpdateEmitterComponent = component;
log.trace("Initialized QueryUpdateEmitterConfigurable producer: {}", component);
return true;
}
/**
* Adds the given {@code component} to the {@code commandDispatchInterceptorComponents}
*
* @param component component to initialize
* @return {@code true} if the {@code component} was initialized, {@code false} otherwise
*/
private boolean initCommandDispatchInterceptorComponent(Component component) {
commandDispatchInterceptorComponents.add(component);
log.trace("Initialized CommandDispatchInterceptor component: {}", component);
return true;
}
/**
* Adds the given {@code component} to the {@code eventDispatchInterceptorComponents}
*
* @param component component to initialize
* @return {@code true} if the {@code component} was initialized, {@code false} otherwise
*/
private boolean initEventDispatchInterceptorComponent(Component component) {
eventDispatchInterceptorComponents.add(component);
log.trace("Initialized EventDispatchInterceptor component: {}", component);
return true;
}
/**
* Adds the given {@code component} to the {@code eventUpcasterComponents}
*
* @param component component to initialize
* @return {@code true} if the {@code component} was initialized, {@code false} otherwise
*/
private boolean initEventUpcasterComponent(Component component) {
eventUpcasterComponents.add(component);
log.trace("Initialized EventUpcaster component: {}", component);
return true;
}
/**
* Adds the given {@code component} to the {@code correlationDataProviderComponents}
*
* @param component component to initialize
* @return {@code true} if the {@code component} was initialized, {@code false} otherwise
*/
private boolean initCorrelationDataProviderComponent(Component component) {
correlationDataProviderComponents.add(component);
log.trace("Initialized CorrelationDataProvider component: {}", component);
return true;
}
/**
* Adds the given {@code component} to the {@code moduleConfiguration}
*
* @param component component to initialize
* @return {@code true} if the {@code component} was initialized, {@code false} otherwise
*/
private boolean initModuleConfigurationComponent(Component component) {
moduleConfigurationComponents.add(component);
log.trace("Initialized ModuleConfiguration component: {}", component);
return true;
}
/**
* Adds the given {@code component} to the {@code configurerModuleComponents}
*
* @param component component to initialize
* @return {@code true} if the {@code component} was initialized, {@code false} otherwise
*/
private boolean initConfigurerModuleComponent(Component component) {
configurerModuleComponents.add(component);
log.trace("Initialized ConfigurerModule component: {}", component);
return true;
}
/**
* Adds the given {@code component} to the {@code customComponents}
*
* @param component component to initialize
*/
private void initCustomComponent(Component component) {
customComponents.add(component);
log.trace("Initialized custom component: {}", component);
}
/**
* Invoked after container has validated that there are no deployment problems
* and before creating contexts or processing requests
*
*
* Fires {@link AxonConfiguredEvent}
*
*
* May fire {@link AxonStartedEvent} if {@link AxonProperties#isAutoStartEnabled()}
* is {@code true}
*
* @param event an event fired after deployment validated
* @param beanManager current {@link BeanManager}
* @see AxonProperties
* @see AxonConfiguredEvent
* @see AxonStartedEvent
*/
void afterDeploymentValidation(@Observes AfterDeploymentValidation event, BeanManager beanManager) {
log.debug("Configuring Axon application");
AxonProperties axonProperties = resolveProperties(beanManager);
configureAggregates(beanManager);
configureSagas(beanManager);
configureEventProcessing(beanManager);
configureSerializer(beanManager);
configureCommandHandlers(beanManager);
configureEventHandlers(beanManager);
configureQueryHandlers(beanManager);
configureTransactionManager(beanManager);
configureCommandBus(beanManager);
configureEventBus(beanManager);
configureEventStorageEngine(beanManager);
configureQueryBus(beanManager);
configureResourceInjector(beanManager);
configureQueryUpdateEmitter(beanManager);
configureEventUpcasters(beanManager);
configureModules(beanManager);
configureConfigurerModules(beanManager);
configureCorrelationDataProviders(beanManager);
configureCustomComponents(beanManager);
configuration = configurer.buildConfiguration();
configureCommandDispatchInterceptors(beanManager);
configureEventDispatchInterceptors(beanManager);
log.info("Axon application configured");
beanManager.fireEvent(new AxonConfiguredEvent(configuration));
if (axonProperties.isAutoStartEnabled()) {
log.debug("Starting Axon application");
configuration.start();
log.info("Axon application started");
beanManager.fireEvent(new AxonStartedEvent());
} else {
log.info("Skipping Axon auto start since disabled");
}
}
/**
* Resolves Axon configuration properties
*
* @param beanManager current {@link BeanManager}
* @return Axon configuration properties
*/
private AxonProperties resolveProperties(BeanManager beanManager) {
return Optional.ofNullable(axonPropertiesComponent)
.map(component -> ComponentResolver.of(component).resolve(beanManager))
.orElseGet(() -> AxonProperties.builder().build());
}
/**
* Configures Axon {@link org.axonframework.modelling.command.Aggregate} instances
*
* @param beanManager current {@link BeanManager}
* @see Configurer#configureAggregate(Class)
* @see Configurer#configureAggregate(AggregateConfiguration)
*/
private void configureAggregates(BeanManager beanManager) {
List> unknownAggregateReferences = aggregateConfiguratorComponents.keySet()
.stream()
.filter(type -> !aggregateTypes.contains(type))
.collect(Collectors.toList());
if (!unknownAggregateReferences.isEmpty()) {
throw new AxonConfigurationException(String.format("Unknown AggregateConfigurator components for " +
"aggregates declared: %s", unknownAggregateReferences));
}
for (Class aggregateType : aggregateTypes) {
Component component = aggregateConfiguratorComponents.getOrDefault(
aggregateType, defaultAggregateConfiguratorComponent);
if (isNull(component)) {
configurer = configurer.configureAggregate(aggregateType);
} else {
AggregateConfigurator configurator = ComponentResolver.of(component).resolve(beanManager);
configurer = configurer.configureAggregate(
configurator.apply(ReflectionUtils.getRawType(aggregateType)));
}
log.debug("Configured Aggregate: {}", aggregateType);
}
}
/**
* Configures Axon {@link org.axonframework.modelling.saga.Saga} instances
*
* @param beanManager current {@link BeanManager}
* @see EventProcessingConfigurer#registerSaga(Class)
* @see EventProcessingConfigurer#registerSaga(Class, Consumer)
*/
private void configureSagas(BeanManager beanManager) {
List> unknownSagaReferences = sagaConfiguratorComponents.keySet()
.stream()
.filter(type -> !sagaTypes.contains(type))
.collect(Collectors.toList());
if (!unknownSagaReferences.isEmpty()) {
throw new AxonConfigurationException(String.format("Unknown SagaConfigurator references to " +
"sagas declared: %s", unknownSagaReferences));
}
for (Class sagaType : sagaTypes) {
Component component =
sagaConfiguratorComponents.getOrDefault(sagaType, defaultSagaConfiguratorComponent);
if (isNull(component)) {
configurer = configurer.eventProcessing(eventProcessingConfigurer ->
eventProcessingConfigurer.registerSaga(sagaType));
} else {
SagaConfigurator configurator = ComponentResolver.of(component).resolve(beanManager);
configurer = configurer.eventProcessing(eventProcessingConfigurer ->
eventProcessingConfigurer.registerSaga(ReflectionUtils.getRawType(sagaType), configurator));
}
log.debug("Configured Saga: {}", sagaType);
}
}
/**
* Configures Axon {@link EventProcessingConfigurer}
*
* @param beanManager current {@link BeanManager}
* @see Configurer#eventProcessing(Consumer)
*/
private void configureEventProcessing(BeanManager beanManager) {
if (nonNull(eventProcessingConfiguratorComponent)) {
EventProcessingConfigurator configurator =
ComponentResolver.of(eventProcessingConfiguratorComponent).resolve(beanManager);
configurer = configurer.eventProcessing(configurator);
log.debug("Configured EventProcessing component: {}", eventProcessingConfiguratorComponent);
}
}
/**
* Configures Axon {@link Serializer} instances
*
* @param beanManager current {@link BeanManager}
* @see Configurer#configureSerializer(Function)
* @see Configurer#configureMessageSerializer(Function)
* @see Configurer#configureEventSerializer(Function)
*/
private void configureSerializer(BeanManager beanManager) {
if (!serializerComponents.isEmpty()) {
Component defaultSerializerComponent = serializerComponents.get(SerializerType.DEFAULT);
if (nonNull(defaultSerializerComponent)) {
ConfigurableComponentResolver resolver = ConfigurableComponentResolver.of(defaultSerializerComponent);
Configurable defaultSerializer = resolver.resolve(beanManager);
configurer = configurer.configureSerializer(defaultSerializer);
log.debug("Configured default Serializer: {}", defaultSerializerComponent);
}
Component messageSerializerComponent = serializerComponents.get(SerializerType.MESSAGE);
if (nonNull(messageSerializerComponent)) {
Configurable messageSerializer =
ConfigurableComponentResolver.of(messageSerializerComponent).resolve(beanManager);
configurer = configurer.configureMessageSerializer(messageSerializer);
log.debug("Configured message Serializer: {}", messageSerializerComponent);
}
Component eventSerializerComponent = serializerComponents.get(SerializerType.EVENT);
if (nonNull(eventSerializerComponent)) {
Configurable eventSerializer =
ConfigurableComponentResolver.of(eventSerializerComponent).resolve(beanManager);
configurer = configurer.configureEventSerializer(eventSerializer);
log.debug("Configured event Serializer: {}", eventSerializerComponent);
}
}
}
/**
* Configures Axon CommandHandler instances
*
* @param beanManager current {@link BeanManager}
* @see Configurer#registerCommandHandler(Function)
*/
private void configureCommandHandlers(BeanManager beanManager) {
for (Type commandHandlerType : commandHandlerTypes) {
Object commandHandler = CdiUtils.getReference(beanManager, commandHandlerType);
configurer = configurer.registerCommandHandler(conf -> commandHandler);
log.debug("Configured CommandHandler: {}", commandHandlerType);
}
}
/**
* Configures Axon EventHandler instances
*
* @param beanManager current {@link BeanManager}
* @see Configurer#registerEventHandler(Function)
*/
private void configureEventHandlers(BeanManager beanManager) {
for (Type eventHandlerType : eventHandlerTypes) {
Object eventHandler = CdiUtils.getReference(beanManager, eventHandlerType);
configurer = configurer.registerEventHandler(conf -> eventHandler);
log.debug("Configured EventHandler: {}", eventHandlerType);
}
}
/**
* Configures Axon QueryHandler instances
*
* @param beanManager current {@link BeanManager}
* @see Configurer#registerQueryHandler(Function)
*/
private void configureQueryHandlers(BeanManager beanManager) {
for (Type queryHandlerType : queryHandlerTypes) {
Object queryHandler = CdiUtils.getReference(beanManager, queryHandlerType);
configurer = configurer.registerQueryHandler(conf -> queryHandler);
log.debug("Configured QueryHandler: {}", queryHandlerType);
}
}
/**
* Configures Axon {@link TransactionManager}
*
* @param beanManager current {@link BeanManager}
* @see Configurer#configureTransactionManager(Function)
*/
private void configureTransactionManager(BeanManager beanManager) {
if (nonNull(transactionManagerComponent)) {
Configurable configurable =
ConfigurableComponentResolver.of(transactionManagerComponent).resolve(beanManager);
configurer = configurer.configureTransactionManager(configurable);
log.debug("Configured TransactionManager component: {}", transactionManagerComponent);
} else {
configurer = configurer.configureTransactionManager(conf -> new JtaTransactionManager());
log.debug("Configured default JtaTransactionManager");
}
}
/**
* Configures Axon {@link CommandBus}
*
* @param beanManager current {@link BeanManager}
* @see Configurer#configureCommandBus(Function)
*/
private void configureCommandBus(BeanManager beanManager) {
if (nonNull(commandBusComponent)) {
Configurable configurable =
ConfigurableComponentResolver.of(commandBusComponent).resolve(beanManager);
configurer = configurer.configureCommandBus(conf -> {
CommandBus commandBus = configurable.apply(conf);
commandBus.registerHandlerInterceptor(
new CorrelationDataInterceptor<>(conf.correlationDataProviders()));
return commandBus;
});
log.debug("Configured CommandBus: {}", commandBusComponent);
}
}
/**
* Configures Axon {@link EventStorageEngine}
*
* @param beanManager current {@link BeanManager}
* @see Configurer#configureEmbeddedEventStore(Function)
*/
private void configureEventStorageEngine(BeanManager beanManager) {
if (nonNull(eventStorageEngineComponent)) {
Configurable configurable =
ConfigurableComponentResolver.of(eventStorageEngineComponent).resolve(beanManager);
configurer = configurer.configureEmbeddedEventStore(configurable);
log.debug("Configured EventStorageEngine: {}", eventStorageEngineComponent);
}
}
/**
* Configures Axon {@link EventBus}
*
* @param beanManager current {@link BeanManager}
* @see Configurer#configureEventBus(Function)
*/
private void configureEventBus(BeanManager beanManager) {
if (nonNull(eventBusComponent)) {
Configurable configurable =
ConfigurableComponentResolver.of(eventBusComponent).resolve(beanManager);
configurer = configurer.configureEventBus(configurable);
log.debug("Configured EventBus: {}", eventStorageEngineComponent);
}
}
/**
* Configures Axon {@link QueryBus}
*
* @param beanManager current {@link BeanManager}
* @see Configurer#configureQueryBus(Function)
*/
private void configureQueryBus(BeanManager beanManager) {
if (nonNull(queryBusComponent)) {
Configurable configurable =
ConfigurableComponentResolver.of(queryBusComponent).resolve(beanManager);
configurer = configurer.configureQueryBus(configurable);
log.debug("Configured QueryBus: {}", queryBusComponent);
}
}
/**
* Configures Axon {@link ResourceInjector}
*
* @param beanManager current {@link BeanManager}
* @see Configurer#configureResourceInjector(Function)
*/
private void configureResourceInjector(BeanManager beanManager) {
if (nonNull(resourceInjectorComponent)) {
Configurable configurable =
ConfigurableComponentResolver.of(resourceInjectorComponent).resolve(beanManager);
configurer = configurer.configureResourceInjector(configurable);
log.debug("Configured ResourceInjector: {}", resourceInjectorComponent);
}
}
/**
* Configures Axon {@link QueryUpdateEmitter}
*
* @param beanManager current {@link BeanManager}
* @see Configurer#configureQueryUpdateEmitter(Function)
*/
private void configureQueryUpdateEmitter(BeanManager beanManager) {
if (nonNull(queryUpdateEmitterComponent)) {
Configurable configurable =
ConfigurableComponentResolver.of(queryUpdateEmitterComponent).resolve(beanManager);
configurer = configurer.configureQueryUpdateEmitter(configurable);
log.debug("Configured QueryUpdateEmitter: {}", configurable);
}
}
/**
* Configures Axon {@link EventUpcaster}
*
* @param beanManager current {@link BeanManager}
* @see Configurer#registerEventUpcaster(Function)
*/
private void configureEventUpcasters(BeanManager beanManager) {
for (Component component : eventUpcasterComponents) {
Configurable configurable = ConfigurableComponentResolver.of(component).resolve(beanManager);
configurer = configurer.registerEventUpcaster(configurable);
log.debug("Configured EventUpcaster: {}", component);
}
}
/**
* Configures Axon {@link CorrelationDataProvider} instances
*
* @param beanManager current {@link BeanManager}
* @see Configurer#configureCorrelationDataProviders(Function)
*/
private void configureCorrelationDataProviders(BeanManager beanManager) {
List correlationDataProviders = correlationDataProviderComponents.stream()
.map(component -> ComponentResolver.of(component).resolve(beanManager))
.collect(Collectors.toList());
if (!correlationDataProviders.isEmpty()) {
configurer.configureCorrelationDataProviders(conf -> correlationDataProviders);
log.debug("Configured CorrelationDataProvider instances: {}", correlationDataProviderComponents);
}
}
/**
* Configures Axon {@link ModuleConfiguration} instances
*
* @param beanManager current {@link BeanManager}
* @see Configurer#registerModule(ModuleConfiguration)
*/
private void configureModules(BeanManager beanManager) {
for (Component component : moduleConfigurationComponents) {
ModuleConfiguration moduleConfiguration = ComponentResolver.of(component).resolve(beanManager);
configurer = configurer.registerModule(new LazyRetrievedModuleConfiguration(() ->
moduleConfiguration, component.getType()));
log.debug("Configured ModuleConfiguration: {}", component);
}
}
/**
* Configures Axon {@link ConfigurerModule} instances
*
* @param beanManager current {@link BeanManager}
* @see ConfigurerModule#configureModule(Configurer)
*/
private void configureConfigurerModules(BeanManager beanManager) {
for (Component component : configurerModuleComponents) {
ConfigurerModule configurerModule = ComponentResolver.of(component).resolve(beanManager);
configurerModule.configureModule(configurer);
log.debug("Configured ConfigurerModule: {}", configurerModule);
}
}
/**
* Configures Axon custom components
*
* @param beanManager current {@link BeanManager}
* @param custom component type
* @see Configurer#registerComponent(Class, Function)
*/
private void configureCustomComponents(BeanManager beanManager) {
for (Component component : customComponents) {
Configurable configurable = ConfigurableComponentResolver.of(component).resolve(beanManager);
Type actualType = Optional.ofNullable(
ReflectionUtils.getTypeArgument(component.getType(), Configurable.class))
.orElse(component.getType());
configurer = configurer.registerComponent(ReflectionUtils.getRawType(actualType), configurable);
log.debug("Configured custom component: {}", component);
}
}
/**
* Configures Axon command {@link MessageDispatchInterceptor} instances
*
*
* Must be called after {@code configuration} initialization and before
* {@code configuration} start
*
* @param beanManager current {@link BeanManager}
* @see CommandBus#registerDispatchInterceptor(MessageDispatchInterceptor)
*/
private void configureCommandDispatchInterceptors(BeanManager beanManager) {
CommandBus commandBus = configuration.commandBus();
for (Component component : commandDispatchInterceptorComponents) {
CommandDispatchInterceptor interceptor = ComponentResolver.of(component).resolve(beanManager);
commandBus.registerDispatchInterceptor(interceptor);
log.debug("Configured CommandDispatchInterceptor: {}", component);
}
}
/**
* Configures Axon event {@link MessageDispatchInterceptor} instances
*
*
* Must be called after {@code configuration} initialization and before
* {@code configuration} start
*
* @param beanManager current {@link BeanManager}
* @see EventBus#registerDispatchInterceptor(MessageDispatchInterceptor)
*/
private void configureEventDispatchInterceptors(BeanManager beanManager) {
EventBus eventBus = configuration.eventBus();
for (Component component : eventDispatchInterceptorComponents) {
EventDispatchInterceptor interceptor = ComponentResolver.of(component).resolve(beanManager);
eventBus.registerDispatchInterceptor(interceptor);
log.debug("Configured EventDispatchInterceptor: {}", component);
}
}
/**
* Invoked after container has finished processing requests and destroyed all contexts
*
*
* Fires {@link AxonStoppedEvent}
*
* @param event an event fired after deployment validated
* @param beanManager current {@link BeanManager}
* @see AxonStoppedEvent
*/
void beforeShutdown(@Observes BeforeShutdown event, BeanManager beanManager) {
log.debug("Stopping Axon application");
configuration.shutdown();
log.info("Axon application stopped");
beanManager.fireEvent(new AxonStoppedEvent());
}
}