Package org.springframework.integration.mongodb.inbound

Class MongoDbChangeStreamMessageProducer

java.lang.Object

org.springframework.integration.context.IntegrationObjectSupport

org.springframework.integration.endpoint.AbstractEndpoint

org.springframework.integration.endpoint.MessageProducerSupport

org.springframework.integration.mongodb.inbound.MongoDbChangeStreamMessageProducer

All Implemented Interfaces:

Aware, BeanFactoryAware, BeanNameAware, DisposableBean, InitializingBean, SmartInitializingSingleton, ApplicationContextAware, Lifecycle, Phased, SmartLifecycle, ExpressionCapable, MessageProducer, IntegrationPattern, NamedComponent, ManageableLifecycle, ManageableSmartLifecycle, TrackableComponent

public class MongoDbChangeStreamMessageProducer
extends MessageProducerSupport

A MessageProducerSupport for MongoDB Change Stream implementation. The functionality is based on the ReactiveMongoOperations.changeStream(String, ChangeStreamOptions, Class) and MessageProducerSupport.subscribeToPublisher(org.reactivestreams.Publisher) consumption.

Since:

5.3

Author:

Artem Bilan

Field Summary

Fields inherited from class org.springframework.integration.endpoint.AbstractEndpoint

lifecycleCondition, lifecycleLock

Fields inherited from class org.springframework.integration.context.IntegrationObjectSupport

EXPRESSION_PARSER, logger

Fields inherited from interface org.springframework.context.SmartLifecycle

DEFAULT_PHASE

Constructor Summary

Constructors

Constructor	Description
MongoDbChangeStreamMessageProducer(ReactiveMongoOperations mongoOperations)	Create an instance based on the provided ReactiveMongoOperations.

Method Summary

Modifier and Type	Method	Description
protected void	doStart()	Take no action by default.
String	getComponentType()	Subclasses may implement this method to provide component type information.
void	setCollection(String collection)	Specify a collection name to track change events from.
void	setDomainType(Class<?> domainType)	Specify an object type to convert an event body to.
void	setExtractBody(boolean extractBody)	Configure this channel adapter to build a Message to produce with a payload based on a ChangeStreamEvent.getBody() (by default) or use a whole ChangeStreamEvent as a payload.
void	setOptions(ChangeStreamOptions options)	Specify a ChangeStreamOptions.

Methods inherited from class org.springframework.integration.endpoint.MessageProducerSupport

afterSingletonsInstantiated, buildErrorMessage, doStop, getErrorChannel, getErrorMessageAttributes, getIntegrationPatternType, getMessagingTemplate, getOutputChannel, onInit, sendErrorMessageIfNecessary, sendMessage, setErrorChannel, setErrorChannelName, setErrorMessageStrategy, setOutputChannel, setOutputChannelName, setSendTimeout, setShouldTrack, subscribeToPublisher

Methods inherited from class org.springframework.integration.endpoint.AbstractEndpoint

destroy, doStop, getPhase, getRole, isActive, isAutoStartup, isRunning, setAutoStartup, setPhase, setRole, start, stop, stop

Methods inherited from class org.springframework.integration.context.IntegrationObjectSupport

afterPropertiesSet, extractTypeIfPossible, generateId, getApplicationContext, getApplicationContextId, getBeanDescription, getBeanFactory, getBeanName, getChannelResolver, getComponentName, getConversionService, getExpression, getIntegrationProperties, getIntegrationProperty, getMessageBuilderFactory, getTaskScheduler, isInitialized, setApplicationContext, setBeanFactory, setBeanName, setChannelResolver, setComponentName, setConversionService, setMessageBuilderFactory, setPrimaryExpression, setTaskScheduler, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.springframework.integration.support.context.NamedComponent

getBeanName, getComponentName

Constructor Details

MongoDbChangeStreamMessageProducer

public MongoDbChangeStreamMessageProducer(ReactiveMongoOperations mongoOperations)

Create an instance based on the provided ReactiveMongoOperations.

Parameters:

mongoOperations - the ReactiveMongoOperations to use.

See Also:

ReactiveMongoOperations.changeStream(String, ChangeStreamOptions, Class)

Method Details

setDomainType

public void setDomainType(Class<?> domainType)

Specify an object type to convert an event body to. Defaults to Document class.

Parameters:

domainType - the class for event body conversion.

See Also:

ReactiveMongoOperations.changeStream(String, ChangeStreamOptions, Class)

setCollection

public void setCollection(String collection)

Specify a collection name to track change events from. By default tracks all the collection in the mongoOperations configured database.

Parameters:

collection - a collection to use.

See Also:

ReactiveMongoOperations.changeStream(String, ChangeStreamOptions, Class)

setOptions

public void setOptions(ChangeStreamOptions options)

Specify a ChangeStreamOptions.

Parameters:

options - the ChangeStreamOptions to use.

See Also:

ReactiveMongoOperations.changeStream(String, ChangeStreamOptions, Class)

setExtractBody

public void setExtractBody(boolean extractBody)

Configure this channel adapter to build a Message to produce with a payload based on a ChangeStreamEvent.getBody() (by default) or use a whole ChangeStreamEvent as a payload.

Parameters:

extractBody - to extract ChangeStreamEvent.getBody() or not.

getComponentType

public String getComponentType()

Description copied from class: IntegrationObjectSupport

Subclasses may implement this method to provide component type information.

Specified by:

getComponentType in interface NamedComponent

Overrides:

getComponentType in class IntegrationObjectSupport

doStart

protected void doStart()

Description copied from class: MessageProducerSupport

Take no action by default. Subclasses may override this if they need lifecycle-managed behavior. Protected by 'lifecycleLock'.

Overrides:

doStart in class MessageProducerSupport