Package visibility changes

Author: Nandan Bn

spring-boot/spring-events/.mvn/wrapper/MavenWrapperDownloader.java

@@ -0,0 +1,117 @@
+/*
+ * Copyright 2007-present 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
+ *
+ *      https://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.
+ */
+import java.net.*;
+import java.io.*;
+import java.nio.channels.*;
+import java.util.Properties;
+
+public class MavenWrapperDownloader {
+
+    private static final String WRAPPER_VERSION = "0.5.6";
+    /**
+     * Default URL to download the maven-wrapper.jar from, if no 'downloadUrl' is provided.
+     */
+    private static final String DEFAULT_DOWNLOAD_URL = "https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/"
+        + WRAPPER_VERSION + "/maven-wrapper-" + WRAPPER_VERSION + ".jar";
+
+    /**
+     * Path to the maven-wrapper.properties file, which might contain a downloadUrl property to
+     * use instead of the default one.
+     */
+    private static final String MAVEN_WRAPPER_PROPERTIES_PATH =
+            ".mvn/wrapper/maven-wrapper.properties";
+
+    /**
+     * Path where the maven-wrapper.jar will be saved to.
+     */
+    private static final String MAVEN_WRAPPER_JAR_PATH =
+            ".mvn/wrapper/maven-wrapper.jar";
+
+    /**
+     * Name of the property which should be used to override the default download url for the wrapper.
+     */
+    private static final String PROPERTY_NAME_WRAPPER_URL = "wrapperUrl";
+
+    public static void main(String args[]) {
+        System.out.println("- Downloader started");
+        File baseDirectory = new File(args[0]);
+        System.out.println("- Using base directory: " + baseDirectory.getAbsolutePath());
+
+        // If the maven-wrapper.properties exists, read it and check if it contains a custom
+        // wrapperUrl parameter.
+        File mavenWrapperPropertyFile = new File(baseDirectory, MAVEN_WRAPPER_PROPERTIES_PATH);
+        String url = DEFAULT_DOWNLOAD_URL;
+        if(mavenWrapperPropertyFile.exists()) {
+            FileInputStream mavenWrapperPropertyFileInputStream = null;
+            try {
+                mavenWrapperPropertyFileInputStream = new FileInputStream(mavenWrapperPropertyFile);
+                Properties mavenWrapperProperties = new Properties();
+                mavenWrapperProperties.load(mavenWrapperPropertyFileInputStream);
+                url = mavenWrapperProperties.getProperty(PROPERTY_NAME_WRAPPER_URL, url);
+            } catch (IOException e) {
+                System.out.println("- ERROR loading '" + MAVEN_WRAPPER_PROPERTIES_PATH + "'");
+            } finally {
+                try {
+                    if(mavenWrapperPropertyFileInputStream != null) {
+                        mavenWrapperPropertyFileInputStream.close();
+                    }
+                } catch (IOException e) {
+                    // Ignore ...
+                }
+            }
+        }
+        System.out.println("- Downloading from: " + url);
+
+        File outputFile = new File(baseDirectory.getAbsolutePath(), MAVEN_WRAPPER_JAR_PATH);
+        if(!outputFile.getParentFile().exists()) {
+            if(!outputFile.getParentFile().mkdirs()) {
+                System.out.println(
+                        "- ERROR creating output directory '" + outputFile.getParentFile().getAbsolutePath() + "'");
+            }
+        }
+        System.out.println("- Downloading to: " + outputFile.getAbsolutePath());
+        try {
+            downloadFileFromURL(url, outputFile);
+            System.out.println("Done");
+            System.exit(0);
+        } catch (Throwable e) {
+            System.out.println("- Error downloading");
+            e.printStackTrace();
+            System.exit(1);
+        }
+    }
+
+    private static void downloadFileFromURL(String urlString, File destination) throws Exception {
+        if (System.getenv("MVNW_USERNAME") != null && System.getenv("MVNW_PASSWORD") != null) {
+            String username = System.getenv("MVNW_USERNAME");
+            char[] password = System.getenv("MVNW_PASSWORD").toCharArray();
+            Authenticator.setDefault(new Authenticator() {
+                @Override
+                protected PasswordAuthentication getPasswordAuthentication() {
+                    return new PasswordAuthentication(username, password);
+                }
+            });
+        }
+        URL website = new URL(urlString);
+        ReadableByteChannel rbc;
+        rbc = Channels.newChannel(website.openStream());
+        FileOutputStream fos = new FileOutputStream(destination);
+        fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);
+        fos.close();
+        rbc.close();
+    }
+
+}

spring-boot/spring-events/.mvn/wrapper/maven-wrapper.jar

@@ -0,0 +1,2 @@
+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.6.3/apache-maven-3.6.3-bin.zip
+wrapperUrl=https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.5.6/maven-wrapper-0.5.6.jar

spring-boot/spring-events/.mvn/wrapper/maven-wrapper.properties

@@ -25,6 +25,12 @@
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter</artifactId>
 		</dependency>
+		<!-- https://mvnrepository.com/artifact/org.springframework/spring-tx -->
+		<dependency>
+			<groupId>org.springframework</groupId>
+			<artifactId>spring-tx</artifactId>
+		</dependency>
+
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-web</artifactId>
@@ -51,8 +57,8 @@
 		<dependency>
 			<groupId>org.mockito</groupId>
 			<artifactId>mockito-core</artifactId>
-		</dependency> 
-		
+		</dependency>
+
 	</dependencies>
 
 	<build>

spring-boot/spring-events/pom.xml

@@ -5,11 +5,11 @@
 import org.springframework.stereotype.Component;
 
 @Component
-public class AsyncListener {
+class AsyncListener {
 
 	@Async
 	@EventListener
-	public void handleAsyncEvent(String event) {
+	void handleAsyncEvent(String event) {
 		System.out.println(String.format("Async event recevied: %s", event));
 	}
 

spring-boot/spring-events/src/main/java/io/reflectoring/eventsdemo/AsyncListener.java

@@ -1,5 +1,6 @@
 package io.reflectoring.eventsdemo;
 
+// Empty class to showcase spring creates an event for non-void returned events
 public class ReturnedEvent {
 
 }

spring-boot/spring-events/src/main/java/io/reflectoring/eventsdemo/ReturnedEvent.java

@@ -7,25 +7,25 @@
 import org.springframework.context.ApplicationContextAware;
 import org.springframework.context.ApplicationListener;
 
-class SpringBuiltInEventsListener implements ApplicationListener<SpringApplicationEvent>, ApplicationContextAware{
-	
+class SpringBuiltInEventsListener implements ApplicationListener<SpringApplicationEvent>, ApplicationContextAware {
+
 	ApplicationContext applicationContext;
-	
+
 	@Override
 	public void onApplicationEvent(SpringApplicationEvent event) {
 		System.out.println("SpringApplicationEvent Received - " + event);
-		
-		// Initializing publisher for custom event		
+
+		// Initializing publisher for custom event
 		this.initPublisher(event);
 	}
 
 	@Override
 	public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
 		this.applicationContext = applicationContext;
 	}
-	
+
 	private void initPublisher(SpringApplicationEvent event) {
-		if(event instanceof ApplicationReadyEvent) {
+		if (event instanceof ApplicationReadyEvent) {
 			this.applicationContext.getBean(Publisher.class).publishEvent();
 		}
 	}

spring-boot/spring-events/src/main/java/io/reflectoring/eventsdemo/SpringBuiltInEventsListener.java

@@ -6,29 +6,29 @@
 import org.springframework.transaction.event.TransactionalEventListener;
 
 @Component
-public class UserRemovedListener {
-	
+class UserRemovedListener {
+
 	@EventListener
-	public ReturnedEvent handleUserRemovedEvent(UserRemovedEvent event) {
+	ReturnedEvent handleUserRemovedEvent(UserRemovedEvent event) {
 		System.out.println(String.format("User removed (@EventListerner): %s", event.getName()));
 		// Spring will send ReturnedEvent as a new event
 		return new ReturnedEvent();
 	}
-	
+
 	// Listener to receive the event returned by Spring
 	@EventListener
-	public void handleReturnedEvent(ReturnedEvent event) {
+	void handleReturnedEvent(ReturnedEvent event) {
 		System.out.println("ReturnedEvent received.");
 	}
-	
+
 	@EventListener(condition = "#event.name eq 'reflectoring'")
-	public void handleConditionalListener(UserRemovedEvent event) {
+	void handleConditionalListener(UserRemovedEvent event) {
 		System.out.println(String.format("User removed (Conditional): %s", event.getName()));
 	}
-	
-	@TransactionalEventListener(condition = "#event.name eq 'reflectoring'", phase=TransactionPhase.AFTER_COMPLETION)
-	public void handleAfterUserRemoved(UserRemovedEvent event) {
+
+	@TransactionalEventListener(condition = "#event.name eq 'reflectoring'", phase = TransactionPhase.AFTER_COMPLETION)
+	void handleAfterUserRemoved(UserRemovedEvent event) {
 		System.out.println(String.format("User removed (@TransactionalEventListener): %s", event.getName()));
 	}
-	
+
 }