Migrate file encoding initializer to listener

spring-boot/src/main/java/org/springframework/boot/context/initializer/FileEncodingApplicationContextInitializer.java → spring-boot/src/main/java/org/springframework/boot/context/listener/FileEncodingApplicationListener.java

@@ -14,16 +14,16 @@
  * limitations under the License.
  */
 
-package org.springframework.boot.context.initializer;
+package org.springframework.boot.context.listener;
 
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
+import org.springframework.boot.SpringApplicationEnvironmentAvailableEvent;
 import org.springframework.boot.bind.RelaxedPropertyResolver;
-import org.springframework.context.ApplicationContextInitializer;
-import org.springframework.context.ConfigurableApplicationContext;
+import org.springframework.context.ApplicationListener;
 
 /**
- * An {@link ApplicationContextInitializer} halts application startup if the system file
+ * An {@link ApplicationListener}that halts application startup if the system file
  * encoding does not match an expected value set in the environment. By default has no
  * effect, but if you set <code>spring.mandatory_file_encoding</code> (or some camelCase
  * or UPPERCASE variant of that) to the name of a character encoding (e.g. "UTF-8") then
@@ -41,16 +41,15 @@ import org.springframework.context.ConfigurableApplicationContext;
  * 
  * @author Dave Syer
  */
-public class FileEncodingApplicationContextInitializer implements
-		ApplicationContextInitializer<ConfigurableApplicationContext> {
+public class FileEncodingApplicationListener implements
+		ApplicationListener<SpringApplicationEnvironmentAvailableEvent> {
 
-	private static Log logger = LogFactory
-			.getLog(FileEncodingApplicationContextInitializer.class);
+	private static Log logger = LogFactory.getLog(FileEncodingApplicationListener.class);
 
 	@Override
-	public void initialize(final ConfigurableApplicationContext context) {
+	public void onApplicationEvent(SpringApplicationEnvironmentAvailableEvent event) {
 		RelaxedPropertyResolver resolver = new RelaxedPropertyResolver(
-				context.getEnvironment(), "spring.");
+				event.getEnvironment(), "spring.");
 		if (resolver.containsProperty("mandatoryFileEncoding")) {
 			final String encoding = System.getProperty("file.encoding");
 			final String desired = resolver.getProperty("mandatoryFileEncoding");

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

 # Application Context Initializers
 org.springframework.context.ApplicationContextInitializer=\
-org.springframework.boot.context.initializer.FileEncodingApplicationContextInitializer,\
 org.springframework.boot.context.initializer.ContextIdApplicationContextInitializer,\
 org.springframework.boot.context.initializer.EnvironmentDelegateApplicationContextInitializer
 
 # Application Listeners
 org.springframework.context.ApplicationListener=\
+org.springframework.boot.context.listener.FileEncodingApplicationListener,\
 org.springframework.boot.context.listener.VcapApplicationListener,\
 org.springframework.boot.context.listener.ConfigFileApplicationListener,\
 org.springframework.boot.context.listener.LoggingApplicationListener,\

spring-boot/src/test/java/org/springframework/boot/TestUtils.java

@@ -20,6 +20,7 @@ import java.util.HashMap;
 import java.util.Map;
 
 import org.springframework.context.ConfigurableApplicationContext;
+import org.springframework.core.env.ConfigurableEnvironment;
 import org.springframework.core.env.MapPropertySource;
 
 /**
@@ -31,6 +32,10 @@ public abstract class TestUtils {
 
 	public static void addEnviroment(ConfigurableApplicationContext context,
 			String... pairs) {
+		addEnviroment(context.getEnvironment(), pairs);
+	}
+
+	public static void addEnviroment(ConfigurableEnvironment enviroment, String... pairs) {
 		Map<String, Object> map = new HashMap<String, Object>();
 		for (String pair : pairs) {
 			int index = pair.indexOf(":");
@@ -38,8 +43,7 @@ public abstract class TestUtils {
 			String value = index > 0 ? pair.substring(index + 1) : "";
 			map.put(key.trim(), value.trim());
 		}
-		context.getEnvironment().getPropertySources()
-				.addFirst(new MapPropertySource("test", map));
+		enviroment.getPropertySources().addFirst(new MapPropertySource("test", map));
 	}
 
 }

spring-boot/src/test/java/org/springframework/boot/builder/SpringApplicationBuilderTests.java

@@ -176,7 +176,7 @@ public class SpringApplicationBuilderTests {
 		SpringApplicationBuilder application = new SpringApplicationBuilder(
 				ExampleConfig.class).web(false);
 		this.context = application.run();
-		assertEquals(3, application.application().getInitializers().size());
+		assertEquals(2, application.application().getInitializers().size());
 	}
 
 	@Test
@@ -184,7 +184,7 @@ public class SpringApplicationBuilderTests {
 		SpringApplicationBuilder application = new SpringApplicationBuilder(
 				ExampleConfig.class).child(ChildConfig.class).web(false);
 		this.context = application.run();
-		assertEquals(4, application.application().getInitializers().size());
+		assertEquals(3, application.application().getInitializers().size());
 	}
 
 	@Test
@@ -198,7 +198,7 @@ public class SpringApplicationBuilderTests {
 					}
 				});
 		this.context = application.run();
-		assertEquals(4, application.application().getInitializers().size());
+		assertEquals(3, application.application().getInitializers().size());
 	}
 
 	@Configuration

spring-boot/src/test/java/org/springframework/boot/context/initializer/FileEncodingApplicationContextInitializerTests.java → spring-boot/src/test/java/org/springframework/boot/context/listener/FileEncodingApplicationListenerTests.java

@@ -14,45 +14,43 @@
  * limitations under the License.
  */
 
-package org.springframework.boot.context.initializer;
+package org.springframework.boot.context.listener;
 
 import org.junit.Assume;
-import org.junit.Before;
 import org.junit.Test;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.SpringApplicationEnvironmentAvailableEvent;
 import org.springframework.boot.TestUtils;
-import org.springframework.context.ConfigurableApplicationContext;
-import org.springframework.context.support.StaticApplicationContext;
+import org.springframework.core.env.ConfigurableEnvironment;
+import org.springframework.core.env.StandardEnvironment;
 
 /**
  * @author Dave Syer
  */
-public class FileEncodingApplicationContextInitializerTests {
+public class FileEncodingApplicationListenerTests {
 
-	private FileEncodingApplicationContextInitializer initializer = new FileEncodingApplicationContextInitializer();
-	private ConfigurableApplicationContext context;
-
-	@Before
-	public void init() {
-		this.context = new StaticApplicationContext();
-	}
+	private FileEncodingApplicationListener initializer = new FileEncodingApplicationListener();
+	private ConfigurableEnvironment environment = new StandardEnvironment();
+	private SpringApplicationEnvironmentAvailableEvent event = new SpringApplicationEnvironmentAvailableEvent(
+			new SpringApplication(), this.environment, new String[0]);
 
 	@Test(expected = IllegalStateException.class)
 	public void testIllegalState() {
-		TestUtils.addEnviroment(this.context, "spring.mandatory_file_encoding:FOO");
-		this.initializer.initialize(this.context);
+		TestUtils.addEnviroment(this.environment, "spring.mandatory_file_encoding:FOO");
+		this.initializer.onApplicationEvent(this.event);
 	}
 
 	@Test
 	public void testSunnyDayNothingMandated() {
-		this.initializer.initialize(this.context);
+		this.initializer.onApplicationEvent(this.event);
 	}
 
 	@Test
 	public void testSunnyDayMandated() {
 		Assume.assumeNotNull(System.getProperty("file.encoding"));
-		TestUtils.addEnviroment(this.context,
-				"spring.mandatory_file_encoding:" + System.getProperty("file.encoding"));
-		this.initializer.initialize(this.context);
+		TestUtils.addEnviroment(this.environment, "spring.mandatory_file_encoding:"
+				+ System.getProperty("file.encoding"));
+		this.initializer.onApplicationEvent(this.event);
 	}
 
 }