Spring Integration Groovy DSL and Spring Boot

foo.groovy

doWithSpringIntegration {
	namespaces('int-http')
	springXml {
	
		'int-http:inbound-gateway'(id:'events-inbound-gateway',
		'request-channel':'events-request-inbound-channel',
		'path':'/examples/eventsFlow',
		'supported-methods':'GET'
		)
	
		'si:channel'(id:'events-request-inbound-channel')
		'si:service-activator'('input-channel':'events-request-inbound-channel',
			'expression':'42')
	}
	
}

Groovy.java

/*
 * Copyright 2014 the original author or authors.
 *
 * 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 foo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ImportResource;
import org.springframework.core.io.ClassPathResource;
import org.springframework.integration.dsl.groovy.builder.IntegrationBuilder;
import org.springframework.integration.http.inbound.HttpRequestHandlingEndpointSupport;

/**
 * @author Gary Russell
 * @since 4.0
 *
 */
@EnableAutoConfiguration
@ImportResource("classpath:foo/siboot.xml")
public class Groovy {

	private ApplicationContext ctx;

	public static void main(String[] args) throws Exception {
		SpringApplication.run(Groovy.class, args);
	}

	/**
	 * Promote the endpoint from the DSL context to the root context. 
	 */
	@Bean
	public HttpRequestHandlingEndpointSupport http() {
		IntegrationBuilder builder = new IntegrationBuilder();
		builder.build(new ClassPathResource("foo/foo.groovy"));
		this.ctx = builder.getApplicationContext();
		return ctx.getBean(HttpRequestHandlingEndpointSupport.class);
	}
}

siboot.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns:int="http://www.springframework.org/schema/integration"
	xmlns:int-http="http://www.springframework.org/schema/integration/http"
	xsi:schemaLocation="http://www.springframework.org/schema/integration/http http://www.springframework.org/schema/integration/http/spring-integration-http.xsd
		http://www.springframework.org/schema/integration http://www.springframework.org/schema/integration/spring-integration.xsd
		http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

	<int:channel id="dummy" />

	<int-http:inbound-channel-adapter auto-startup="false" channel="dummy" path="/foo" />

<!-- dummy adapter needed at the top level to get the handler mapping enabled -->

</beans>