org.springframework.xd.analytics.metrics.integration

Class MessageCounterHandler

java.lang.Object

org.springframework.xd.analytics.metrics.integration.MessageCounterHandler

All Implemented Interfaces:

org.springframework.integration.expression.IntegrationEvaluationContextAware

public class MessageCounterHandler
extends java.lang.Object

Counts the number of non-null messages using an underlying CounterRepository.

Field Summary

Fields

Modifier and Type	Field and Description
protected org.springframework.expression.EvaluationContext	evaluationContext
protected org.springframework.expression.Expression	nameExpression
protected org.springframework.expression.spel.standard.SpelExpressionParser	spelExpressionParser

Constructor Summary

Constructors

Constructor and Description
MessageCounterHandler(CounterRepository counterRepository, java.lang.String nameExpression)

Method Summary

Methods

Modifier and Type	Method and Description
protected java.lang.String	computeMetricName(org.springframework.messaging.Message<?> message)
org.springframework.messaging.Message<?>	process(org.springframework.messaging.Message<?> message)
void	setIntegrationEvaluationContext(org.springframework.expression.EvaluationContext evaluationContext)

Methods inherited from class java.lang.Object

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

Field Detail

nameExpression

protected final org.springframework.expression.Expression nameExpression

spelExpressionParser

protected final org.springframework.expression.spel.standard.SpelExpressionParser spelExpressionParser

evaluationContext

protected org.springframework.expression.EvaluationContext evaluationContext

Constructor Detail

MessageCounterHandler

public MessageCounterHandler(CounterRepository counterRepository,
                     java.lang.String nameExpression)

Method Detail

process

@ServiceActivator
public org.springframework.messaging.Message<?> process(org.springframework.messaging.Message<?> message)

computeMetricName

protected java.lang.String computeMetricName(org.springframework.messaging.Message<?> message)

setIntegrationEvaluationContext

public void setIntegrationEvaluationContext(org.springframework.expression.EvaluationContext evaluationContext)

Specified by:

setIntegrationEvaluationContext in interface org.springframework.integration.expression.IntegrationEvaluationContextAware