Merge branch '1.5.x'

spring-boot-cli/src/main/content/legal/open_source_licenses.txt

@@ -1,18 +1,19 @@
-open_source_license.txt
+open_source_licenses.txt
 
 Spring Boot CLI
-
 ==================================================================
 
-GoPivotal makes available all content in this download ("Content").
+Pivotal makes available all content in this download ("Content").
 Unless otherwise indicated below, the Content is provided to you under
-the terms and conditions of the Eclipse Public License Version 1.0 ("EPL").
+the terms and conditions of the Apache License 2.0 (the "License"). A
-A copy of the EPL is available in the file called license.txt. For
+copy of the license is available in the file called LICENSE.txt or you
-purposes of the EPL, "Program" will mean the Content.
+ may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
 
 The following copyright statements and licenses apply to various open
 source software packages (or portions thereof) that are distributed with
-this Content.
+this content.
 
 
 =================================================================
@@ -28,16 +29,43 @@ associated with each component.
 
 SECTION 1: BSD-STYLE, MIT-STYLE, OR SIMILAR STYLE LICENSES
 
-   >>> antlr:antlr:2.7.7
+   >>> JLine (jline:jline)
-   >>> net.sf.jopt-simple:jopt-simple:4.5
+   >>> JOpt Simple (net.sf.jopt-simple:jopt-simple)
-   >>> org.ow2.asm:asm:4.1
+   >>> ASM 4.0 (org.ow2.asm:asm)
-
 
 
 SECTION 2: Apache License, V2.0
 
-   >>> org.codehaus.groovy:groovy:2.1
+   >>> JSON library from Android SDK (com.vaadin.external.google:android-json)
-   >>> org.apache.ivy:ivy:2.3.0
+   >>> Apache Commons Codec (commons-codec:commons-codec)
+   >>> Apache HttpClient (org.apache.httpcomponents:httpclient)
+   >>> Apache HttpCore (org.apache.httpcomponents:httpcore)
+   >>> Plexus Cipher: encryption/decryption Component (org.sonatype.plexus:plexus-cipher)
+   >>> Plexus Security Dispatcher Component (org.sonatype.plexus:plexus-sec-dispatcher)
+   >>> Apache Commons Logging (commons-logging:commons-logging)
+   >>> Apache Groovy (org.codehaus.groovy:groovy)
+   >>> Maven Aether Provider (org.apache.maven:maven-aether-provider)
+   >>> Maven Model (org.apache.maven:maven-model)
+   >>> Maven Model Builder (org.apache.maven:maven-model-builder)
+   >>> Maven Repository Metadata Model (org.apache.maven:maven-repository-metadata)
+   >>> Maven Settings (org.apache.maven:maven-settings)
+   >>> Maven Settings Builder (org.apache.maven:maven-settings-builder)
+   >>> Plexus :: Component Annotations (org.codehaus.plexus:plexus-component-annotations)
+   >>> Plexus Common Utilities (org.codehaus.plexus:plexus-utils)
+   >>> Plexus Component API (org.codehaus.plexus:plexus-component-api)
+   >>> Plexus Interpolation API (org.codehaus.plexus:plexus-interpolation)
+
+
+SECTION 3: Eclipse Public License, Version 1.0
+
+   >>> Aether API (org.eclipse.aether:aether-api)
+   >>> Aether Connector Basic (org.eclipse.aether:aether-connector-basic)
+   >>> Aether Implementation (org.eclipse.aether:aether-impl)
+   >>> Aether SPI (org.eclipse.aether:aether-spi)
+   >>> Aether Transport File (org.eclipse.aether:aether-transport-file)
+   >>> Aether Transport HTTP (org.eclipse.aether:aether-transport-http)
+   >>> Aether Utilities (org.eclipse.aether:aether-util)
+
 
 
 --------------- SECTION 1:  BSD-STYLE, MIT-STYLE, OR SIMILAR STYLE LICENSES ----------
@@ -45,38 +73,41 @@ SECTION 2: Apache License, V2.0
 BSD-STYLE, MIT-STYLE, OR SIMILAR STYLE LICENSES are applicable to the following component(s).
 
 
->>> antlr:antlr:2.7.7
+>>> JLine (jline:jline)
-
-SOFTWARE RIGHTS
-
-ANTLR 1989-2006 Developed by Terence Parr
-Partially supported by University of San Francisco & jGuru.com
-
-We reserve no legal rights to the ANTLR--it is fully in the
-public domain. An individual or company may do whatever
-they wish with source code distributed with ANTLR or the
-code generated by ANTLR, including the incorporation of
-ANTLR, or its output, into commerical software.
 
-We encourage users to develop software with ANTLR. However,
+Copyright (c) 2002-2006, Marc Prud'hommeaux <mwp1@cornell.edu>
-we do ask that credit is given to us for developing
+All rights reserved.
-ANTLR. By "credit", we mean that if you use ANTLR or
-incorporate any source code into one of your programs
-(commercial product, research project, or otherwise) that
-you acknowledge this fact somewhere in the documentation,
-research report, etc... If you like ANTLR and have
-developed a nice tool with the output, please mention that
-you developed it using ANTLR. In addition, we ask that the
-headers remain intact in our source code. As long as these
-guidelines are kept, we expect to continue enhancing this
-system and expect to make other tools available as they are
-completed.
 
-The primary ANTLR guy:
+Redistribution and use in source and binary forms, with or
+without modification, are permitted provided that the following
+conditions are met:
+
+Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+
+Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with
+the distribution.
+
+Neither the name of JLine nor the names of its contributors
+may be used to endorse or promote products derived from this
+software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
+BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
+AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
+OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+OF THE POSSIBILITY OF SUCH DAMAGE.
 
-Terence Parr
-parrt@cs.usfca.edu
-parrt@antlr.org
 
 >>> net.sf.jopt-simple:jopt-simple:4.5
 
@@ -103,7 +134,7 @@ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 THE SOFTWARE.
 
 
->>> org.ow2.asm:asm:4.1
+>>> org.ow2.asm:asm
 
 Copyright (c) 2000-2011 INRIA, France Telecom
 All rights reserved.
@@ -136,12 +167,28 @@ ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 THE POSSIBILITY OF SUCH DAMAGE.
 
 
+
 --------------- SECTION 2: Apache License, V2.0 ----------
 
 Apache License, V2.0 is applicable to the following component(s).
 
 
->>> org.codehaus.groovy:groovy:2.1
+>>> org.apache.httpcomponents:httpclient
+>>> org.apache.httpcomponents:httpcore
+>>> org.sonatype.plexus:plexus-cipher
+>>> org.sonatype.plexus:plexus-sec-dispatcher
+>>> commons-logging:commons-logging
+>>> org.codehaus.groovy:groovy
+>>> org.apache.maven:maven-aether-provider
+>>> org.apache.maven:maven-model
+>>> org.apache.maven:maven-model-builder
+>>> org.apache.maven:maven-repository-metadata
+>>> org.apache.maven:maven-settings
+>>> org.apache.maven:maven-settings-builder
+>>> org.codehaus.plexus:plexus-component-annotations
+>>> org.codehaus.plexus:plexus-utils
+>>> org.codehaus.plexus:plexus-component-api
+>>> org.codehaus.plexus:plexus-interpolation
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -155,22 +202,58 @@ 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
 
+>>> CGLIB 3.0 (cglib:cglib:3.0):
 
->>> org.apache.ivy:ivy:2.3.0
+Per the LICENSE file in the CGLIB JAR distribution downloaded from
+http://sourceforge.net/projects/cglib/files/cglib3/3.0/cglib-3.0.jar/download,
+CGLIB 3.0 is licensed under the Apache License, version 2.0, the text of which
+is included above.
 
-Copyright (c) 2007-2013 The Apache Software Foundation
 
-Licensed under the Apache License, Version 2.0 (the "License");
+--------------- SECTION 3: Eclipse Public License, Version 1.0 ----------
-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
+Eclipse Public License, Version 1.0 is applicable to the following component(s).
+
+>>> org.eclipse.aether:aether-api
+>>> org.eclipse.aether:aether-connector-basic
+>>> org.eclipse.aether:aether-impl
+>>> org.eclipse.aether:aether-spi
+>>> org.eclipse.aether:aether-transport-file
+>>> org.eclipse.aether:aether-transport-http
+>>> org.eclipse.aether:aether-util
+
+The Eclipse Foundation makes available all content in this plug-in ("Content").
+Unless otherwise  indicated below, the Content is provided to you under the terms
+and conditions  of the Eclipse Public License Version 1.0 ("EPL").  A copy of the
+EPL is available  at http://www.eclipse.org/legal/epl-v10.html.
+
+For purposes of the EPL, "Program" will mean the Content.
+
+If you did not receive this Content directly from the Eclipse Foundation, the
+Content is  being redistributed by another party ("Redistributor") and different
+terms and conditions may apply to your use of any object code in the Content.
+Check the Redistributor's license that was provided with the Content.  If no such
+license exists, contact the Redistributor.  Unless otherwise indicated below, the
+terms and conditions of the EPL still apply to any source code in the Content and
+such source code may be obtained at http://www.eclipse.org/
 
-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
 
 
 ===========================================================================
+
+To the extent any open source subcomponents are licensed under the EPL and/or
+other similar licenses that require the source code and/or modifications to
+source code to be made available (as would be noted above), you may obtain a
+copy of the source code corresponding to the binaries for such open source
+components and modifications thereto, if any, (the "Source Files"), by
+downloading the Source Files from https://github.com/spring-projects/spring-boot,
+or by sending a request, with your name and address to:
+
+    Pivotal, Inc., 875 Howard St,
+    San Francisco, CA 94103
+    United States of America
+
+or email info@pivotal.io.  All such requests should clearly specify:
+
+    OPEN SOURCE FILES REQUEST
+    Attention General Counsel

spring-boot-docs/src/main/asciidoc/howto.adoc

@@ -1489,11 +1489,10 @@ You can apply the same principle if you are configuring a custom JNDI `DataSourc
 	}
 ----
 
-
+Spring Boot also provides a utility builder class `DataSourceBuilder` that can be used to
-Spring Boot also provides a utility builder class `DataSourceBuilder` that can be used
+create one of the standard data sources (if it is on the classpath). The builder can
-to create one of the standard data sources (if it is on the classpath). The builder can
+detect the one to use based on what's available on the classpath. It also auto detects the
-detect the one to use based on the ones available on the classpath and it also auto
+driver based on the JDBC url.
-detects the driver based on the JDBC url.
 
 [source,java,indent=0,subs="verbatim,quotes,attributes"]
 ----
@@ -1516,7 +1515,7 @@ There is a catch however. Because the actual type of the connection pool is not
 no keys are generated in the metadata for your custom `DataSource` and no completion is
 available in your IDE (The `DataSource` interface doesn't expose any property). Also, if
 you happen to _only_ have Hikari on the classpath, this basic setup will not work because
-Hikari has no `url` parameter (but a `jdbcUrl` parameter). You should have to rewrite
+Hikari has no `url` parameter (but a `jdbcUrl` parameter). You will have to rewrite
 your configuration as follows:
 
 [source,properties,indent=0]
@@ -1618,6 +1617,7 @@ This final example configures two data sources on custom namespaces with the sam
 than what Spring Boot would do in auto-configuration.
 
 
+
 [[howto-use-spring-data-repositories]]
 === Use Spring Data repositories
 Spring Data can create implementations for you of `@Repository` interfaces of various

spring-boot-docs/src/main/java/org/springframework/boot/jdbc/BasicDataSourceExample.java

@@ -45,4 +45,5 @@ public class BasicDataSourceExample {
 		// end::configuration[]
 
 	}
+
 }

spring-boot-docs/src/main/java/org/springframework/boot/jdbc/CompleteTwoDataSourcesExample.java

@@ -25,8 +25,8 @@ import org.springframework.context.annotation.Configuration;
 import org.springframework.context.annotation.Primary;
 
 /**
- * Example configuration for configuring two data sources with what Spring Boot does
+ * Example configuration for configuring two data sources with what Spring Boot does in
- * in auto-configuration.
+ * auto-configuration.
  *
  * @author Stephane Nicoll
  */
@@ -50,9 +50,7 @@ public class CompleteTwoDataSourcesExample {
 		@Primary
 		@ConfigurationProperties("app.datasource.foo")
 		public DataSource fooDataSource() {
-			return fooDataSourceProperties()
+			return fooDataSourceProperties().initializeDataSourceBuilder().build();
-					.initializeDataSourceBuilder()
-					.build();
 		}
 
 		@Bean
@@ -61,13 +59,10 @@ public class CompleteTwoDataSourcesExample {
 			return new DataSourceProperties();
 		}
 
-
 		@Bean
 		@ConfigurationProperties("app.datasource.bar")
 		public DataSource barDataSource() {
-			return barDataSourceProperties()
+			return barDataSourceProperties().initializeDataSourceBuilder().build();
-					.initializeDataSourceBuilder()
-					.build();
 		}
 		// end::configuration[]
 

spring-boot-docs/src/main/java/org/springframework/boot/jdbc/ConfigurableDataSourceExample.java

@@ -52,10 +52,10 @@ public class ConfigurableDataSourceExample {
 		@ConfigurationProperties("app.datasource")
 		public HikariDataSource dataSource(DataSourceProperties properties) {
 			return (HikariDataSource) properties.initializeDataSourceBuilder()
-					.type(HikariDataSource.class)
+					.type(HikariDataSource.class).build();
-					.build();
 		}
 		// end::configuration[]
 
 	}
+
 }

spring-boot-docs/src/main/java/org/springframework/boot/jdbc/SimpleDataSourceExample.java

@@ -43,8 +43,7 @@ public class SimpleDataSourceExample {
 		@ConfigurationProperties("app.datasource")
 		public HikariDataSource dataSource() {
 			return (HikariDataSource) DataSourceBuilder.create()
-					.type(HikariDataSource.class)
+					.type(HikariDataSource.class).build();
-					.build();
 		}
 		// end::configuration[]
 

spring-boot-docs/src/main/java/org/springframework/boot/jdbc/SimpleTwoDataSourcesExample.java

@@ -53,18 +53,14 @@ public class SimpleTwoDataSourcesExample {
 		@Primary
 		@ConfigurationProperties("app.datasource.foo")
 		public DataSource fooDataSource() {
-			return fooDataSourceProperties()
+			return fooDataSourceProperties().initializeDataSourceBuilder().build();
-					.initializeDataSourceBuilder()
-					.build();
 		}
 
-
 		@Bean
 		@ConfigurationProperties("app.datasource.bar")
 		public BasicDataSource barDataSource() {
 			return (BasicDataSource) DataSourceBuilder.create()
-					.type(BasicDataSource.class)
+					.type(BasicDataSource.class).build();
-					.build();
 		}
 		// end::configuration[]
 

spring-boot-docs/src/test/java/org/springframework/boot/jdbc/BasicDataSourceExampleTests.java

@@ -33,6 +33,7 @@ import static org.assertj.core.api.Assertions.assertThat;
 
 /**
  * Test for {@link BasicDataSourceExample}.
+ *
  * @author Stephane Nicoll
  */
 @RunWith(SpringRunner.class)

spring-boot-docs/src/test/java/org/springframework/boot/jdbc/CompleteTwoDataSourcesExampleTests.java

@@ -47,12 +47,10 @@ public class CompleteTwoDataSourcesExampleTests {
 	@Test
 	public void validateConfiguration() throws SQLException {
 		assertThat(this.context.getBeansOfType(DataSource.class)).hasSize(2);
-
 		DataSource dataSource = this.context.getBean(DataSource.class);
 		assertThat(this.context.getBean("fooDataSource")).isSameAs(dataSource);
 		assertThat(dataSource.getConnection().getMetaData().getURL())
 				.startsWith("jdbc:h2:mem:");
-
 		DataSource barDataSource = this.context.getBean("barDataSource",
 				DataSource.class);
 		assertThat(barDataSource.getConnection().getMetaData().getURL())

spring-boot-docs/src/test/java/org/springframework/boot/jdbc/SampleApp.java

@@ -23,8 +23,8 @@ import org.springframework.boot.autoconfigure.ImportAutoConfiguration;
 import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
 
 /**
- * A sample {@link SpringBootConfiguration} that only enables the auto-configuration
+ * A sample {@link SpringBootConfiguration} that only enables the auto-configuration for
- * for the {@link DataSource}.
+ * the {@link DataSource}.
  *
  * @author Stephane Nicoll
  */

spring-boot-docs/src/test/java/org/springframework/boot/jdbc/SimpleTwoDataSourcesExampleTests.java

@@ -38,8 +38,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  * @author Stephane Nicoll
  */
 @RunWith(SpringRunner.class)
-@SpringBootTest(properties = {
+@SpringBootTest(properties = { "app.datasource.bar.url=jdbc:h2:mem:bar;DB_CLOSE_DELAY=-1",
-		"app.datasource.bar.url=jdbc:h2:mem:bar;DB_CLOSE_DELAY=-1",
 		"app.datasource.bar.max-total=42" })
 @Import(SimpleTwoDataSourcesExample.SimpleDataSourcesConfiguration.class)
 public class SimpleTwoDataSourcesExampleTests {
@@ -50,16 +49,13 @@ public class SimpleTwoDataSourcesExampleTests {
 	@Test
 	public void validateConfiguration() throws SQLException {
 		assertThat(this.context.getBeansOfType(DataSource.class)).hasSize(2);
-
 		DataSource dataSource = this.context.getBean(DataSource.class);
 		assertThat(this.context.getBean("fooDataSource")).isSameAs(dataSource);
 		assertThat(dataSource.getConnection().getMetaData().getURL())
 				.startsWith("jdbc:h2:mem:");
-
 		BasicDataSource barDataSource = this.context.getBean("barDataSource",
 				BasicDataSource.class);
-		assertThat(barDataSource.getUrl())
+		assertThat(barDataSource.getUrl()).isEqualTo("jdbc:h2:mem:bar;DB_CLOSE_DELAY=-1");
-				.isEqualTo("jdbc:h2:mem:bar;DB_CLOSE_DELAY=-1");
 		assertThat(barDataSource.getMaxTotal()).isEqualTo(42);
 	}
 

spring-boot/src/main/java/org/springframework/boot/SpringApplication.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2016 the original author or authors.
+ * Copyright 2012-2017 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.
@@ -1252,7 +1252,6 @@ public class SpringApplication {
 			finally {
 				close(context);
 			}
-
 		}
 		catch (Exception ex) {
 			ex.printStackTrace();

spring-boot/src/main/java/org/springframework/boot/context/config/DelegatingApplicationListener.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2014 the original author or authors.
+ * Copyright 2012-2017 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.
@@ -17,6 +17,7 @@
 package org.springframework.boot.context.config;
 
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.List;
 
 import org.springframework.beans.BeanUtils;
@@ -70,8 +71,11 @@ public class DelegatingApplicationListener
 
 	@SuppressWarnings("unchecked")
 	private List<ApplicationListener<ApplicationEvent>> getListeners(
-			ConfigurableEnvironment env) {
+			ConfigurableEnvironment environment) {
-		String classNames = env.getProperty(PROPERTY_NAME);
+		if (environment == null) {
+			return Collections.emptyList();
+		}
+		String classNames = environment.getProperty(PROPERTY_NAME);
 		List<ApplicationListener<ApplicationEvent>> listeners = new ArrayList<ApplicationListener<ApplicationEvent>>();
 		if (StringUtils.hasLength(classNames)) {
 			for (String className : StringUtils.commaDelimitedListToSet(classNames)) {

spring-boot/src/main/java/org/springframework/boot/context/embedded/jetty/JettyEmbeddedServletContainer.java

@@ -59,6 +59,8 @@ public class JettyEmbeddedServletContainer implements EmbeddedServletContainer {
 
 	private Connector[] connectors;
 
+	private volatile boolean started;
+
 	/**
 	 * Create a new {@link JettyEmbeddedServletContainer} instance.
 	 * @param server the underlying Jetty server
@@ -111,6 +113,10 @@ public class JettyEmbeddedServletContainer implements EmbeddedServletContainer {
 
 	@Override
 	public void start() throws EmbeddedServletContainerException {
+		synchronized (this.monitor) {
+			if (this.started) {
+				return;
+			}
 			this.server.setConnectors(this.connectors);
 			if (!this.autoStart) {
 				return;
@@ -133,6 +139,7 @@ public class JettyEmbeddedServletContainer implements EmbeddedServletContainer {
 						throw ex;
 					}
 				}
+				this.started = true;
 				JettyEmbeddedServletContainer.logger
 						.info("Jetty started on port(s) " + getActualPortsDescription());
 			}
@@ -144,6 +151,7 @@ public class JettyEmbeddedServletContainer implements EmbeddedServletContainer {
 						"Unable to start embedded Jetty servlet container", ex);
 			}
 		}
+	}
 
 	private String getActualPortsDescription() {
 		StringBuilder ports = new StringBuilder();
@@ -197,6 +205,10 @@ public class JettyEmbeddedServletContainer implements EmbeddedServletContainer {
 	@Override
 	public void stop() {
 		synchronized (this.monitor) {
+			if (!this.started) {
+				return;
+			}
+			this.started = false;
 			try {
 				this.server.stop();
 			}

spring-boot/src/main/java/org/springframework/boot/context/embedded/tomcat/TomcatEmbeddedServletContainer.java

@@ -62,6 +62,8 @@ public class TomcatEmbeddedServletContainer implements EmbeddedServletContainer
 
 	private final boolean autoStart;
 
+	private volatile boolean started;
+
 	/**
 	 * Create a new {@link TomcatEmbeddedServletContainer} instance.
 	 * @param tomcat the underlying Tomcat server
@@ -174,6 +176,10 @@ public class TomcatEmbeddedServletContainer implements EmbeddedServletContainer
 
 	@Override
 	public void start() throws EmbeddedServletContainerException {
+		synchronized (this.monitor) {
+			if (this.started) {
+				return;
+			}
 			try {
 				addPreviouslyRemovedConnectors();
 				Connector connector = this.tomcat.getConnector();
@@ -181,6 +187,7 @@ public class TomcatEmbeddedServletContainer implements EmbeddedServletContainer
 					startConnector(connector);
 				}
 				checkThatConnectorsHaveStarted();
+				this.started = true;
 				TomcatEmbeddedServletContainer.logger
 						.info("Tomcat started on port(s): " + getPortsDescription(true));
 			}
@@ -198,6 +205,7 @@ public class TomcatEmbeddedServletContainer implements EmbeddedServletContainer
 						getClass().getClassLoader());
 			}
 		}
+	}
 
 	private void checkThatConnectorsHaveStarted() {
 		for (Connector connector : this.tomcat.getService().findConnectors()) {
@@ -271,7 +279,11 @@ public class TomcatEmbeddedServletContainer implements EmbeddedServletContainer
 	@Override
 	public void stop() throws EmbeddedServletContainerException {
 		synchronized (this.monitor) {
+			if (!this.started) {
+				return;
+			}
 			try {
+				this.started = false;
 				try {
 					stopTomcat();
 					this.tomcat.destroy();

spring-boot/src/main/java/org/springframework/boot/context/embedded/undertow/UndertowEmbeddedServletContainer.java

@@ -88,7 +88,7 @@ public class UndertowEmbeddedServletContainer implements EmbeddedServletContaine
 
 	private Undertow undertow;
 
-	private boolean started = false;
+	private volatile boolean started = false;
 
 	/**
 	 * Create a new {@link UndertowEmbeddedServletContainer} instance.
@@ -144,6 +144,9 @@ public class UndertowEmbeddedServletContainer implements EmbeddedServletContaine
 	@Override
 	public void start() throws EmbeddedServletContainerException {
 		synchronized (this.monitor) {
+			if (this.started) {
+				return;
+			}
 			try {
 				if (!this.autoStart) {
 					return;
@@ -305,9 +308,11 @@ public class UndertowEmbeddedServletContainer implements EmbeddedServletContaine
 	@Override
 	public void stop() throws EmbeddedServletContainerException {
 		synchronized (this.monitor) {
-			if (this.started) {
+			if (!this.started) {
-				try {
+				return;
+			}
 			this.started = false;
+			try {
 				this.manager.stop();
 				this.undertow.stop();
 			}
@@ -317,7 +322,6 @@ public class UndertowEmbeddedServletContainer implements EmbeddedServletContaine
 			}
 		}
 	}
-	}
 
 	@Override
 	public int getPort() {

spring-boot/src/main/java/org/springframework/boot/context/event/EventPublishingRunListener.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2016 the original author or authors.
+ * Copyright 2012-2017 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.
@@ -16,6 +16,9 @@
 
 package org.springframework.boot.context.event;
 
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.SpringApplicationRunListener;
 import org.springframework.context.ApplicationContextAware;
@@ -25,6 +28,7 @@ import org.springframework.context.event.ApplicationEventMulticaster;
 import org.springframework.context.event.SimpleApplicationEventMulticaster;
 import org.springframework.core.Ordered;
 import org.springframework.core.env.ConfigurableEnvironment;
+import org.springframework.util.ErrorHandler;
 
 /**
  * {@link SpringApplicationRunListener} to publish {@link SpringApplicationEvent}s.
@@ -41,7 +45,7 @@ public class EventPublishingRunListener implements SpringApplicationRunListener,
 
 	private final String[] args;
 
-	private final ApplicationEventMulticaster initialMulticaster;
+	private final SimpleApplicationEventMulticaster initialMulticaster;
 
 	public EventPublishingRunListener(SpringApplication application, String[] args) {
 		this.application = application;
@@ -89,9 +93,18 @@ public class EventPublishingRunListener implements SpringApplicationRunListener,
 
 	@Override
 	public void finished(ConfigurableApplicationContext context, Throwable exception) {
+		SpringApplicationEvent event = getFinishedEvent(context, exception);
+		if (context != null) {
 			// Listeners have been registered to the application context so we should
-		// use it at this point
+			// use it at this point if we can
-		context.publishEvent(getFinishedEvent(context, exception));
+			context.publishEvent(event);
+		}
+		else {
+			if (event instanceof ApplicationFailedEvent) {
+				this.initialMulticaster.setErrorHandler(new LoggingErrorHandler());
+			}
+			this.initialMulticaster.multicastEvent(event);
+		}
 	}
 
 	private SpringApplicationEvent getFinishedEvent(
@@ -103,4 +116,15 @@ public class EventPublishingRunListener implements SpringApplicationRunListener,
 		return new ApplicationReadyEvent(this.application, this.args, context);
 	}
 
+	private static class LoggingErrorHandler implements ErrorHandler {
+
+		private static Log logger = LogFactory.getLog(EventPublishingRunListener.class);
+
+		@Override
+		public void handleError(Throwable throwable) {
+			logger.warn("Error calling ApplicationEventListener", throwable);
+		}
+
+	}
+
 }

spring-boot/src/main/java/org/springframework/boot/env/DunnoEnumerablePropertySource.java

@@ -0,0 +1,23 @@
+/*
+ * Copyright 2012-2017 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.boot.env;
+/**
+ * @author pwebb
+ */
+public interface DunnoEnumerablePropertySource {
+
+}

spring-boot/src/main/java/org/springframework/boot/env/DunnoPropertySource.java

@@ -0,0 +1,28 @@
+/*
+ * Copyright 2012-2017 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.boot.env;
+
+/**
+ * @author pwebb
+ */
+public interface DunnoPropertySource {
+
+	boolean containsProperty(String name);
+
+	Object getProperty(String name);
+
+}

spring-boot/src/main/java/org/springframework/boot/logging/LoggingApplicationListener.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2016 the original author or authors.
+ * Copyright 2012-2017 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.
@@ -167,7 +167,7 @@ public class LoggingApplicationListener implements GenericApplicationListener {
 
 	private static Class<?>[] EVENT_TYPES = { ApplicationStartingEvent.class,
 			ApplicationEnvironmentPreparedEvent.class, ApplicationPreparedEvent.class,
-			ContextClosedEvent.class };
+			ContextClosedEvent.class, ApplicationFailedEvent.class };
 
 	private static Class<?>[] SOURCE_TYPES = { SpringApplication.class,
 			ApplicationContext.class };

spring-boot/src/main/java/org/springframework/boot/logging/log4j2/Log4J2LoggingSystem.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2016 the original author or authors.
+ * Copyright 2012-2017 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.
@@ -251,6 +251,7 @@ public class Log4J2LoggingSystem extends Slf4JLoggingSystem {
 		super.cleanUp();
 		LoggerContext loggerContext = getLoggerContext();
 		markAsUninitialized(loggerContext);
+		loggerContext.getConfiguration().removeFilter(FILTER);
 	}
 
 	private LoggerConfig getLoggerConfig(String name) {

spring-boot/src/main/java/org/springframework/boot/logging/logback/LogbackLoggingSystem.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2016 the original author or authors.
+ * Copyright 2012-2017 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.
@@ -193,9 +193,11 @@ public class LogbackLoggingSystem extends Slf4JLoggingSystem {
 
 	@Override
 	public void cleanUp() {
-		markAsUninitialized(getLoggerContext());
+		LoggerContext context = getLoggerContext();
+		markAsUninitialized(context);
 		super.cleanUp();
-		getLoggerContext().getStatusManager().clear();
+		context.getStatusManager().clear();
+		context.getTurboFilterList().remove(FILTER);
 	}
 
 	@Override

spring-boot/src/test/java/org/springframework/boot/context/embedded/AbstractEmbeddedServletContainerFactoryTests.java

@@ -82,6 +82,7 @@ import org.mockito.InOrder;
 import org.springframework.boot.ApplicationHome;
 import org.springframework.boot.ApplicationTemp;
 import org.springframework.boot.context.embedded.Ssl.ClientAuth;
+import org.springframework.boot.testutil.InternalOutputCapture;
 import org.springframework.boot.web.servlet.ErrorPage;
 import org.springframework.boot.web.servlet.FilterRegistrationBean;
 import org.springframework.boot.web.servlet.ServletContextInitializer;
@@ -124,6 +125,9 @@ public abstract class AbstractEmbeddedServletContainerFactoryTests {
 	@Rule
 	public TemporaryFolder temporaryFolder = new TemporaryFolder();
 
+	@Rule
+	public InternalOutputCapture output = new InternalOutputCapture();
+
 	protected EmbeddedServletContainer container;
 
 	private final HttpClientContext httpClientContext = HttpClientContext.create();
@@ -157,6 +161,19 @@ public abstract class AbstractEmbeddedServletContainerFactoryTests {
 		assertThat(getResponse(getLocalUrl("/hello"))).isEqualTo("Hello World");
 	}
 
+	@Test
+	public void startCalledTwice() throws Exception {
+		AbstractEmbeddedServletContainerFactory factory = getFactory();
+		this.container = factory
+				.getEmbeddedServletContainer(exampleServletRegistration());
+		this.container.start();
+		int port = this.container.getPort();
+		this.container.start();
+		assertThat(this.container.getPort()).isEqualTo(port);
+		assertThat(getResponse(getLocalUrl("/hello"))).isEqualTo("Hello World");
+		assertThat(this.output.toString()).containsOnlyOnce("started on port");
+	}
+
 	@Test
 	public void emptyServerWhenPortIsMinusOne() throws Exception {
 		AbstractEmbeddedServletContainerFactory factory = getFactory();

spring-boot/src/test/java/org/springframework/boot/logging/LoggingApplicationListenerTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2016 the original author or authors.
+ * Copyright 2012-2017 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.
@@ -42,7 +42,10 @@ import org.springframework.boot.context.event.ApplicationFailedEvent;
 import org.springframework.boot.context.event.ApplicationStartingEvent;
 import org.springframework.boot.logging.java.JavaLoggingSystem;
 import org.springframework.boot.testutil.InternalOutputCapture;
+import org.springframework.context.ApplicationEvent;
+import org.springframework.context.ApplicationListener;
 import org.springframework.context.event.ContextClosedEvent;
+import org.springframework.context.event.SimpleApplicationEventMulticaster;
 import org.springframework.context.support.GenericApplicationContext;
 import org.springframework.test.context.support.TestPropertySourceUtils;
 import org.springframework.test.util.ReflectionTestUtils;
@@ -85,8 +88,7 @@ public class LoggingApplicationListenerTests {
 	public void init() throws SecurityException, IOException {
 		LogManager.getLogManager().readConfiguration(
 				JavaLoggingSystem.class.getResourceAsStream("logging.properties"));
-		this.initializer.onApplicationEvent(
+		multicastEvent(new ApplicationStartingEvent(new SpringApplication(), NO_ARGS));
-				new ApplicationStartingEvent(new SpringApplication(), NO_ARGS));
 		new File("target/foo.log").delete();
 		new File(tmpDir() + "/spring.log").delete();
 	}
@@ -354,8 +356,8 @@ public class LoggingApplicationListenerTests {
 	public void parseArgsDoesntReplace() throws Exception {
 		this.initializer.setSpringBootLogging(LogLevel.ERROR);
 		this.initializer.setParseArgs(false);
-		this.initializer.onApplicationEvent(new ApplicationStartingEvent(
+		multicastEvent(new ApplicationStartingEvent(this.springApplication,
-				this.springApplication, new String[] { "--debug" }));
+				new String[] { "--debug" }));
 		this.initializer.initialize(this.context.getEnvironment(),
 				this.context.getClassLoader());
 		this.logger.debug("testatdebug");
@@ -365,7 +367,7 @@ public class LoggingApplicationListenerTests {
 	@Test
 	public void bridgeHandlerLifecycle() throws Exception {
 		assertThat(bridgeHandlerInstalled()).isTrue();
-		this.initializer.onApplicationEvent(new ContextClosedEvent(this.context));
+		multicastEvent(new ContextClosedEvent(this.context));
 		assertThat(bridgeHandlerInstalled()).isFalse();
 	}
 
@@ -398,7 +400,7 @@ public class LoggingApplicationListenerTests {
 		TestLoggingApplicationListener listener = new TestLoggingApplicationListener();
 		System.setProperty(LoggingSystem.class.getName(),
 				TestShutdownHandlerLoggingSystem.class.getName());
-		listener.onApplicationEvent(
+		multicastEvent(listener,
 				new ApplicationStartingEvent(new SpringApplication(), NO_ARGS));
 		listener.initialize(this.context.getEnvironment(), this.context.getClassLoader());
 		assertThat(listener.shutdownHook).isNull();
@@ -411,7 +413,7 @@ public class LoggingApplicationListenerTests {
 				TestShutdownHandlerLoggingSystem.class.getName());
 		TestPropertySourceUtils.addInlinedPropertiesToEnvironment(this.context,
 				"logging.register_shutdown_hook=true");
-		listener.onApplicationEvent(
+		multicastEvent(listener,
 				new ApplicationStartingEvent(new SpringApplication(), NO_ARGS));
 		listener.initialize(this.context.getEnvironment(), this.context.getClassLoader());
 		assertThat(listener.shutdownHook).isNotNull();
@@ -424,12 +426,12 @@ public class LoggingApplicationListenerTests {
 	public void closingContextCleansUpLoggingSystem() {
 		System.setProperty(LoggingSystem.SYSTEM_PROPERTY,
 				TestCleanupLoggingSystem.class.getName());
-		this.initializer.onApplicationEvent(
+		multicastEvent(
 				new ApplicationStartingEvent(this.springApplication, new String[0]));
 		TestCleanupLoggingSystem loggingSystem = (TestCleanupLoggingSystem) ReflectionTestUtils
 				.getField(this.initializer, "loggingSystem");
 		assertThat(loggingSystem.cleanedUp).isFalse();
-		this.initializer.onApplicationEvent(new ContextClosedEvent(this.context));
+		multicastEvent(new ContextClosedEvent(this.context));
 		assertThat(loggingSystem.cleanedUp).isTrue();
 	}
 
@@ -437,16 +439,16 @@ public class LoggingApplicationListenerTests {
 	public void closingChildContextDoesNotCleanUpLoggingSystem() {
 		System.setProperty(LoggingSystem.SYSTEM_PROPERTY,
 				TestCleanupLoggingSystem.class.getName());
-		this.initializer.onApplicationEvent(
+		multicastEvent(
 				new ApplicationStartingEvent(this.springApplication, new String[0]));
 		TestCleanupLoggingSystem loggingSystem = (TestCleanupLoggingSystem) ReflectionTestUtils
 				.getField(this.initializer, "loggingSystem");
 		assertThat(loggingSystem.cleanedUp).isFalse();
 		GenericApplicationContext childContext = new GenericApplicationContext();
 		childContext.setParent(this.context);
-		this.initializer.onApplicationEvent(new ContextClosedEvent(childContext));
+		multicastEvent(new ContextClosedEvent(childContext));
 		assertThat(loggingSystem.cleanedUp).isFalse();
-		this.initializer.onApplicationEvent(new ContextClosedEvent(this.context));
+		multicastEvent(new ContextClosedEvent(this.context));
 		assertThat(loggingSystem.cleanedUp).isTrue();
 		childContext.close();
 	}
@@ -493,17 +495,26 @@ public class LoggingApplicationListenerTests {
 	public void applicationFailedEventCleansUpLoggingSystem() {
 		System.setProperty(LoggingSystem.SYSTEM_PROPERTY,
 				TestCleanupLoggingSystem.class.getName());
-		this.initializer.onApplicationEvent(
+		multicastEvent(
 				new ApplicationStartingEvent(this.springApplication, new String[0]));
 		TestCleanupLoggingSystem loggingSystem = (TestCleanupLoggingSystem) ReflectionTestUtils
 				.getField(this.initializer, "loggingSystem");
 		assertThat(loggingSystem.cleanedUp).isFalse();
-		this.initializer
+		multicastEvent(new ApplicationFailedEvent(this.springApplication, new String[0],
-				.onApplicationEvent(new ApplicationFailedEvent(this.springApplication,
+				new GenericApplicationContext(), new Exception()));
-						new String[0], new GenericApplicationContext(), new Exception()));
 		assertThat(loggingSystem.cleanedUp).isTrue();
 	}
 
+	private void multicastEvent(ApplicationEvent event) {
+		multicastEvent(this.initializer, event);
+	}
+
+	private void multicastEvent(ApplicationListener<?> listener, ApplicationEvent event) {
+		SimpleApplicationEventMulticaster multicaster = new SimpleApplicationEventMulticaster();
+		multicaster.addApplicationListener(listener);
+		multicaster.multicastEvent(event);
+	}
+
 	private boolean bridgeHandlerInstalled() {
 		Logger rootLogger = LogManager.getLogManager().getLogger("");
 		Handler[] handlers = rootLogger.getHandlers();