org.springframework.cloud.stream.function

Class FunctionConfiguration

java.lang.Object

org.springframework.cloud.stream.function.FunctionConfiguration

@Configuration
 @ConditionalOnProperty(value="spring.cloud.stream.function.definition")
 @EnableConfigurationProperties(value=StreamFunctionProperties.class)
public class FunctionConfiguration
extends Object

Since:

2.1

Author:

Oleg Zhurakousky, David Turanski, Ilayaperumal Gopinathan

Constructor Summary

Constructors

Constructor and Description
FunctionConfiguration()

Method Summary

Modifier and Type	Method and Description
org.springframework.cloud.stream.function.FunctionCatalogWrapper	functionCatalogWrapper(org.springframework.cloud.function.context.FunctionCatalog catalog)
IntegrationFlowFunctionSupport	functionSupport(org.springframework.cloud.stream.function.FunctionCatalogWrapper functionCatalog, org.springframework.cloud.function.context.catalog.FunctionInspector functionInspector, CompositeMessageConverterFactory messageConverterFactory, StreamFunctionProperties functionProperties, BindingServiceProperties bindingServiceProperties)
org.springframework.integration.dsl.IntegrationFlow	integrationFlowCreator(IntegrationFlowFunctionSupport functionSupport) This configuration creates an instance of the IntegrationFlow from standard Spring Cloud Stream bindings such as Source, Processor and Sink ONLY if there are no existing instances of the IntegrationFlow already available in the context.

Methods inherited from class java.lang.Object

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

Constructor Detail

FunctionConfiguration

public FunctionConfiguration()

Method Detail

functionSupport

@Bean
public IntegrationFlowFunctionSupport functionSupport(org.springframework.cloud.stream.function.FunctionCatalogWrapper functionCatalog,
                                                            org.springframework.cloud.function.context.catalog.FunctionInspector functionInspector,
                                                            CompositeMessageConverterFactory messageConverterFactory,
                                                            StreamFunctionProperties functionProperties,
                                                            BindingServiceProperties bindingServiceProperties)

functionCatalogWrapper

@Bean
public org.springframework.cloud.stream.function.FunctionCatalogWrapper functionCatalogWrapper(org.springframework.cloud.function.context.FunctionCatalog catalog)

integrationFlowCreator

@ConditionalOnMissingBean
 @Bean
public org.springframework.integration.dsl.IntegrationFlow integrationFlowCreator(IntegrationFlowFunctionSupport functionSupport)

This configuration creates an instance of the IntegrationFlow from standard Spring Cloud Stream bindings such as Source, Processor and Sink ONLY if there are no existing instances of the IntegrationFlow already available in the context. This means that it only plays a role in green-field Spring Cloud Stream apps. For logic to compose functions into the existing apps please see "FUNCTION-TO-EXISTING-APP" section of AbstractMessageChannelBinder. The @ConditionalOnMissingBean ensures it does not collide with the the instance of the IntegrationFlow that may have been already defined by the existing (extended) app.