Support for Jmx (and Integration) autoconfig in parent contexts

When there are parent contexts we already had a strategy for registering
the actuator endpoints, but not the regular JMX or Integration MBeans.
This chnage makes the autoconfigs for JMX aware of the parent context.

Also adds a sample with a parent context.

See gh-847

spring-boot-samples/spring-boot-sample-parent-context/src/test/java/sample/parent/consumer/SampleIntegrationApplicationTests.java

@@ -0,0 +1,88 @@
+/*
+ * 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 sample.parent.consumer;
+
+import java.util.concurrent.Callable;
+import java.util.concurrent.Executors;
+import java.util.concurrent.Future;
+import java.util.concurrent.TimeUnit;
+
+import org.junit.AfterClass;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.springframework.boot.SpringApplication;
+import org.springframework.context.ConfigurableApplicationContext;
+import org.springframework.core.io.DefaultResourceLoader;
+import org.springframework.core.io.Resource;
+import org.springframework.core.io.support.ResourcePatternUtils;
+import org.springframework.util.StreamUtils;
+
+import sample.parent.SampleParentContextApplication;
+import sample.parent.producer.ProducerApplication;
+import static org.junit.Assert.assertTrue;
+
+/**
+ * Basic integration tests for service demo application.
+ * 
+ * @author Dave Syer
+ */
+public class SampleIntegrationApplicationTests {
+
+	private static ConfigurableApplicationContext context;
+
+	@BeforeClass
+	public static void start() throws Exception {
+		context = SpringApplication.run(SampleParentContextApplication.class);
+	}
+
+	@AfterClass
+	public static void stop() {
+		if (context != null) {
+			context.close();
+		}
+	}
+
+	@Test
+	public void testVanillaExchange() throws Exception {
+		SpringApplication.run(ProducerApplication.class, "World");
+		String output = getOutput();
+		assertTrue("Wrong output: " + output, output.contains("Hello World"));
+	}
+
+	private String getOutput() throws Exception {
+		Future<String> future = Executors.newSingleThreadExecutor().submit(
+				new Callable<String>() {
+					@Override
+					public String call() throws Exception {
+						Resource[] resources = new Resource[0];
+						while (resources.length == 0) {
+							Thread.sleep(200);
+							resources = ResourcePatternUtils.getResourcePatternResolver(
+									new DefaultResourceLoader()).getResources(
+									"file:target/output/**");
+						}
+						StringBuilder builder = new StringBuilder();
+						for (Resource resource : resources) {
+							builder.append(new String(StreamUtils
+									.copyToByteArray(resource.getInputStream())));
+						}
+						return builder.toString();
+					}
+				});
+		return future.get(30, TimeUnit.SECONDS);
+	}
+}

spring-boot-samples/spring-boot-sample-parent-context/src/test/java/sample/parent/producer/ProducerApplication.java

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+/*
+ * 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 sample.parent.producer;
+
+import java.io.File;
+import java.io.FileOutputStream;
+
+import org.springframework.boot.CommandLineRunner;
+import org.springframework.boot.SpringApplication;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class ProducerApplication implements CommandLineRunner {
+
+	@Override
+	public void run(String... args) throws Exception {
+		new File("target/input").mkdirs();
+		if (args.length > 0) {
+			FileOutputStream stream = new FileOutputStream("target/input/data"
+					+ System.currentTimeMillis() + ".txt");
+			for (String arg : args) {
+				stream.write(arg.getBytes());
+			}
+			stream.flush();
+			stream.close();
+		}
+	}
+
+	public static void main(String[] args) throws Exception {
+		SpringApplication.run(ProducerApplication.class, args);
+	}
+
+}