com.google.cloud.spring.pubsub.integration.inbound

Class PubSubMessageSource

java.lang.Object

org.springframework.integration.util.AbstractExpressionEvaluator

org.springframework.integration.endpoint.AbstractMessageSource<T>

org.springframework.integration.endpoint.AbstractFetchLimitingMessageSource<Object>

com.google.cloud.spring.pubsub.integration.inbound.PubSubMessageSource

All Implemented Interfaces:

org.springframework.beans.factory.Aware, org.springframework.beans.factory.BeanFactoryAware, org.springframework.beans.factory.BeanNameAware, org.springframework.beans.factory.DisposableBean, org.springframework.beans.factory.InitializingBean, org.springframework.integration.core.MessageSource<Object>, org.springframework.integration.IntegrationPattern, org.springframework.integration.support.context.NamedComponent, org.springframework.integration.support.management.IntegrationInboundManagement, org.springframework.integration.support.management.IntegrationManagement, org.springframework.integration.support.management.MessageSourceManagement

public class PubSubMessageSource
extends org.springframework.integration.endpoint.AbstractFetchLimitingMessageSource<Object>

A PubSub Synchronous pull implementation of AbstractMessageSource.

Since:

1.2

Nested Class Summary

Nested classes/interfaces inherited from interface org.springframework.integration.support.management.IntegrationManagement

org.springframework.integration.support.management.IntegrationManagement.ManagementOverrides

Field Summary

Fields inherited from class org.springframework.integration.util.AbstractExpressionEvaluator

EXPRESSION_PARSER, logger

Fields inherited from interface org.springframework.integration.support.management.IntegrationManagement

METER_PREFIX, RECEIVE_COUNTER_NAME, SEND_TIMER_NAME

Constructor Summary

Constructors

Constructor and Description
PubSubMessageSource(PubSubSubscriberOperations pubSubSubscriberOperations, String subscriptionName) Instantiates a Pub/Sub inbound message adapter to poll a given subscription for messages.

Method Summary

Modifier and Type	Method and Description
protected Object	doReceive(int fetchSize) Provides a single polled message.
String	getComponentType()
void	setAckMode(AckMode ackMode)
void	setBlockOnPull(boolean blockOnPull) Instructs synchronous pull to wait until at least one message is available.
void	setHeaderMapper(org.springframework.integration.mapping.HeaderMapper<Map<String,String>> headerMapper)
void	setPayloadType(Class<?> payloadType)

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

doReceive, getMaxFetchSize, setMaxFetchSize

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

buildMessage, destroy, getBeanName, getComponentName, getManagedName, getManagedType, getOverrides, isLoggingEnabled, receive, registerMetricsCaptor, setBeanName, setHeaderExpressions, setLoggingEnabled, setManagedName, setManagedType

Methods inherited from class org.springframework.integration.util.AbstractExpressionEvaluator

afterPropertiesSet, evaluateExpression, evaluateExpression, evaluateExpression, evaluateExpression, evaluateExpression, evaluateExpression, evaluateExpression, getBeanFactory, getEvaluationContext, getEvaluationContext, getMessageBuilderFactory, onInit, setBeanFactory, setConversionService

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.springframework.integration.core.MessageSource

getIntegrationPatternType

Methods inherited from interface org.springframework.integration.support.management.IntegrationManagement

getThisAs

Constructor Detail

PubSubMessageSource

public PubSubMessageSource(PubSubSubscriberOperations pubSubSubscriberOperations,
                           String subscriptionName)

Instantiates a Pub/Sub inbound message adapter to poll a given subscription for messages.

Parameters:

pubSubSubscriberOperations - PubSubSubscriberOperations to use

subscriptionName - short or fully qualified subscription name

Method Detail

setAckMode

public void setAckMode(AckMode ackMode)

setPayloadType

public void setPayloadType(Class<?> payloadType)

setHeaderMapper

public void setHeaderMapper(org.springframework.integration.mapping.HeaderMapper<Map<String,String>> headerMapper)

setBlockOnPull

public void setBlockOnPull(boolean blockOnPull)

Instructs synchronous pull to wait until at least one message is available.

Parameters:

blockOnPull - whether to block until a message is available

doReceive

protected Object doReceive(int fetchSize)

Provides a single polled message.

Messages are received from Pub/Sub by synchronous pull, in batches determined by fetchSize.

Specified by:

doReceive in class org.springframework.integration.endpoint.AbstractFetchLimitingMessageSource<Object>

Parameters:

fetchSize - number of messages to fetch from Pub/Sub.

Returns:

Message wrapper containing the original message.

getComponentType

public String getComponentType()