Set up build to use Paketo build packs for Spring Native.

Move dependency to the native JAR into the common build as we have code to compile to tweak the native image. That code needs to be compilable in non-native scenarios as well.

Use buildpack based native image builds. Remove offending libraries: both Spring Boot DevTools and the Thin Launcher are not native-ready yet. Added NativeConfiguration to capture a few manual hints still needed.

Declare Money as the type being returned from MonetaryAmountAttributeConverter.convertToEntityAttribute(…) so that it is automatically added to the reflection configuration (makes spring-attic/spring-native#826 obsolete).

Author: odrotbohm

server/pom.xml

@@ -20,6 +20,7 @@ xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/ma
 		<java.version>17</java.version>
 		<jmolecules.version>2022.1.0</jmolecules.version>
 		<moduliths.version>1.3.0</moduliths.version>
+		<spring-native.version>0.12.1-SNAPSHOT</spring-native.version>
 	</properties>
 
 	<dependencyManagement>
@@ -163,6 +164,12 @@ xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/ma
 			<optional>true</optional>
 		</dependency>
 
+		<dependency>
+			<groupId>org.springframework.experimental</groupId>
+			<artifactId>spring-native</artifactId>
+			<version>${spring-native.version}</version>
+		</dependency>
+
 	</dependencies>
 
 	<profiles>
@@ -236,27 +243,15 @@ xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/ma
 
 			</dependencies>
 		</profile>
-		
+
+		<!-- General AOT support -->
+
 		<profile>
 
 			<id>aot</id>
 
-			<properties>
-				<spring-native.version>0.12.1-SNAPSHOT</spring-native.version>
-			</properties>
-			
-			<dependencies>
-				<dependency>
-					<groupId>org.springframework.experimental</groupId>
-					<artifactId>spring-native</artifactId>
-					<version>${spring-native.version}</version>
-				</dependency>
-			</dependencies>
-
 			<build>
 
-				<defaultGoal>verify</defaultGoal>
-
 				<plugins>
 					<plugin>
 						<groupId>org.springframework.boot</groupId>
@@ -282,7 +277,46 @@ xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/ma
 			</build>
 
 		</profile>
+
+		<!-- To build native images -->
 
+		<profile>
+
+			<id>native</id>
+
+			<build>
+				<defaultGoal>spring-boot:build-image</defaultGoal>
+				<plugins>
+					<plugin>
+						<groupId>org.springframework.experimental</groupId>
+						<artifactId>spring-aot-maven-plugin</artifactId>
+						<version>${spring-native.version}</version>
+						<executions>
+							<execution>
+								<id>generate</id>
+								<goals>
+									<goal>generate</goal>
+								</goals>
+							</execution>
+						</executions>
+					</plugin>
+					<plugin>
+						<groupId>org.springframework.boot</groupId>
+						<artifactId>spring-boot-maven-plugin</artifactId>
+						<configuration>
+							<image>
+								<builder>paketobuildpacks/builder:tiny</builder>
+								<env>
+									<BP_NATIVE_IMAGE>true</BP_NATIVE_IMAGE>
+								</env>
+							</image>
+						</configuration>
+					</plugin>
+				</plugins>
+			</build>
+
+		</profile>
+
 	</profiles>
 
 	<build>

server/src/main/java/org/springsource/restbucks/NativeConfiguration.java

@@ -0,0 +1,32 @@
+/*
+ * Copyright 2021 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.
+ */
+package org.springsource.restbucks;
+
+import org.springframework.context.annotation.Configuration;
+import org.springframework.nativex.hint.AotProxyHint;
+import org.springframework.nativex.hint.ProxyBits;
+import org.springsource.restbucks.drinks.Drink;
+
+/**
+ * Additional configuration needed to produce Graal metadata to let some application properly work on it.
+ *
+ * @author Oliver Drotbohm
+ */
+@Configuration
+
+// Due to DrinksOptions.BY_NAME (i.e. the usage of a domain type with Spring Data's TypedSort)
+@AotProxyHint(targetClass = Drink.class, proxyFeatures = ProxyBits.IS_STATIC)
+class NativeConfiguration {}

server/src/main/java/org/springsource/restbucks/core/MonetaryAmountAttributeConverter.java

@@ -45,7 +45,7 @@ public String convertToDatabaseColumn(MonetaryAmount amount) {
 	}
 
 	@Override
-	public MonetaryAmount convertToEntityAttribute(String source) {
+	public Money convertToEntityAttribute(String source) {
 
 		if (source == null) {
 			return null;