Add Reactor autoconfiguration

* Make Rector @Autowirable
* Create a ConsumerBeanPostProcessor so users can add
@On and @Reply to bean methods
* Added groovy auto compiler and script sample

[#53955419] [bs-250]

spring-autoconfigure/src/main/java/org/springframework/autoconfigure/reactor/ReactorAutoConfiguration.java

@@ -0,0 +1,57 @@
+/*
+ * Copyright 2012-2013 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 org.springframework.autoconfigure.reactor;
+
+import org.springframework.autoconfigure.AutoConfigureAfter;
+import org.springframework.autoconfigure.web.WebMvcAutoConfiguration;
+import org.springframework.bootstrap.context.condition.ConditionalOnClass;
+import org.springframework.bootstrap.context.condition.ConditionalOnMissingBean;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.core.Ordered;
+import org.springframework.core.annotation.Order;
+
+import reactor.core.Environment;
+import reactor.core.Reactor;
+import reactor.spring.context.ConsumerBeanPostProcessor;
+
+/**
+ * @author Dave Syer
+ */
+@Configuration
+@ConditionalOnClass(Reactor.class)
+@ConditionalOnMissingBean(Reactor.class)
+@AutoConfigureAfter(WebMvcAutoConfiguration.class)
+public class ReactorAutoConfiguration {
+
+	@Bean
+	public Environment reactorEnvironment() {
+		return new Environment(); // TODO: use Spring Environment to configure?
+	}
+
+	@Bean
+	public Reactor rootReactor() {
+		return reactorEnvironment().getRootReactor();
+	}
+
+	@Bean
+	@Order(Ordered.LOWEST_PRECEDENCE)
+	protected ConsumerBeanPostProcessor reactorConsumerBeanPostProcessor() {
+		return new ConsumerBeanPostProcessor();
+	}
+
+}

spring-autoconfigure/src/main/resources/META-INF/spring.factories

@@ -7,6 +7,7 @@ org.springframework.autoconfigure.data.JpaRepositoriesAutoConfiguration,\
 org.springframework.autoconfigure.jdbc.DataSourceAutoConfiguration,\
 org.springframework.autoconfigure.jdbc.DataSourceTransactionManagerAutoConfiguration,\
 org.springframework.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration,\
+org.springframework.autoconfigure.reactor.ReactorAutoConfiguration,\
 org.springframework.autoconfigure.thymeleaf.ThymeleafAutoConfiguration,\
 org.springframework.autoconfigure.web.EmbeddedServletContainerAutoConfiguration,\
 org.springframework.autoconfigure.web.ServerPropertiesAutoConfiguration,\

spring-autoconfigure/src/test/java/org/springframework/autoconfigure/reactor/ReactorAutoConfigurationTests.java

@@ -0,0 +1,41 @@
+/*
+ * Copyright 2012-2013 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 org.springframework.autoconfigure.reactor;
+
+import org.junit.Test;
+import org.springframework.context.annotation.AnnotationConfigApplicationContext;
+
+import reactor.core.Reactor;
+
+import static org.junit.Assert.assertNotNull;
+
+/**
+ * @author Dave Syer
+ */
+public class ReactorAutoConfigurationTests {
+
+	private AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext();
+
+	@Test
+	public void reactorIsAvailable() {
+		this.context.register(ReactorAutoConfiguration.class);
+		this.context.refresh();
+		assertNotNull(this.context.getBean(Reactor.class));
+		this.context.close();
+	}
+
+}