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Use Maven plugin and Paketo buildpack in batch sample
See spring-atticgh-165
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‎spring-graalvm-native-samples/batch/README.md

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Very basic spring boot project using Spring Batch.
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Current status:
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The configuration in src/main/resources/META-INF/native-image was generated with an agent run of the application.
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The additional configuration in the graal folder was added as required whilst iterating on trying to get it to work.
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The compile script is full of initialize-at-build-time entries.
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The setting `spring.aop.proxy-target-class: false` is set in the app - is that valid/correct for this setup?
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TODO:
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- Add proper support via hints
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- Remove manual config entries
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- On Batch side add `proxyBeanMethods=false` to `org.springframework.batch.core.configuration.annotation.ScopeConfiguration` and `org.springframework.batch.core.configuration.annotation.SimpleBatchConfiguration`.
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To build and run the native application packaged in a lightweight container:
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```
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mvn spring-boot:build-image
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docker-compose up
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```

‎spring-graalvm-native-samples/batch/compile.sh

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time native-image \
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--verbose \
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-H:Name=$ARTIFACT \
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--initialize-at-build-time=org.hsqldb.jdbc.JDBCDriver \
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--initialize-at-build-time=org.springframework.batch.core.JobParameters \
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--initialize-at-build-time=org.springframework.batch.core.JobInstance \
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--initialize-at-build-time=org.springframework.beans.factory.InitializingBean \
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--initialize-at-build-time=org.springframework.batch.core.launch.JobOperator \
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--initialize-at-build-time=org.springframework.batch.core.Job \
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--initialize-at-build-time=org.springframework.batch.core.configuration.JobFactory \
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--initialize-at-build-time=org.springframework.batch.core.Entity \
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--initialize-at-build-time=org.springframework.batch.core.configuration.JobRegistry \
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--initialize-at-build-time=org.springframework.batch.core.JobExecution \
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--initialize-at-build-time=org.springframework.batch.core.StepExecution \
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--initialize-at-build-time=org.springframework.batch.repository.JobRepository \
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--initialize-at-build-time=org.springframework.batch.launch.JobLauncher \
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--initialize-at-build-time=org.springframework.transaction.TransactionStatus \
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--initialize-at-build-time=org.springframework.transaction.TransactionDefinition \
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--initialize-at-build-time=org.springframework.transaction.PlatformTransactionManager \
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--initialize-at-build-time=org.springframework.batch.core.repository.JobRepository \
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--initialize-at-build-time=org.springframework.batch.core.launch.JobLauncher \
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-cp $CP:../../graal $MAINCLASS 2>&1 | tee output.txt
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-cp $CP $MAINCLASS 2>&1 | tee output.txt
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if [[ -f $ARTIFACT ]]
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then

‎spring-graalvm-native-samples/batch/docker-compose.yml

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version: '3.1'
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services:
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batch:
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image: batch:0.0.1-SNAPSHOT

‎spring-graalvm-native-samples/batch/graal/META-INF/native-image/proxy-config.json

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‎spring-graalvm-native-samples/batch/graal/META-INF/native-image/resource-config.json

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‎spring-graalvm-native-samples/batch/pom.xml

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<plugin>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-maven-plugin</artifactId>
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</plugin>
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<plugin>
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<artifactId>maven-dependency-plugin</artifactId>
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<executions>
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<execution>
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<phase>generate-sources</phase>
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<goals>
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<goal>build-classpath</goal>
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</goals>
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<configuration>
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<outputProperty>maven.compile.classpath</outputProperty>
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<pathSeparator>:</pathSeparator>
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</configuration>
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</execution>
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</executions>
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<configuration>
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<image>
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<builder>nebhale/native-image-builder:defer-to-application</builder>
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<env>
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<BP_BOOT_NATIVE_IMAGE>1</BP_BOOT_NATIVE_IMAGE>
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<BP_BOOT_NATIVE_IMAGE_BUILD_ARGUMENTS>
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-Dspring.native.remove-jmx-support=true
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-Dspring.spel.ignore=true
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</BP_BOOT_NATIVE_IMAGE_BUILD_ARGUMENTS>
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</env>
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</image>
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</configuration>
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</plugin>
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</plugins>
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<pluginManagement>
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<plugins>
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<!--This plugin's configuration is used to store Eclipse m2e settings only. It has no influence on the Maven build itself.-->
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<plugin>
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<groupId>org.eclipse.m2e</groupId>
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<artifactId>lifecycle-mapping</artifactId>
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<version>1.0.0</version>
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<configuration>
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<lifecycleMappingMetadata>
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<pluginExecutions>
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<pluginExecution>
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<pluginExecutionFilter>
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<groupId>
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org.apache.maven.plugins
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</groupId>
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<artifactId>
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maven-dependency-plugin
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</artifactId>
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<versionRange>
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[3.1.1,)
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</versionRange>
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<goals>
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<goal>build-classpath</goal>
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</goals>
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</pluginExecutionFilter>
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<action>
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<ignore></ignore>
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</action>
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</pluginExecution>
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</pluginExecutions>
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</lifecycleMappingMetadata>
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</configuration>
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</plugin>
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</plugins>
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</pluginManagement>
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</build>
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<pluginRepositories>
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<pluginRepository>

‎spring-graalvm-native-samples/batch/src/main/resources/META-INF/native-image/jni-config.json

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‎spring-graalvm-native-samples/batch/src/main/resources/META-INF/native-image/proxy-config.json

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[
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["org.springframework.batch.core.launch.JobOperator","org.springframework.beans.factory.InitializingBean","org.springframework.aop.SpringProxy","org.springframework.aop.framework.Advised","org.springframework.core.DecoratingProxy"],
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["java.lang.reflect.ParameterizedType","org.springframework.core.SerializableTypeWrapper$SerializableTypeProxy","java.io.Serializable"],
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["java.lang.reflect.WildcardType","org.springframework.core.SerializableTypeWrapper$SerializableTypeProxy","java.io.Serializable"],
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["java.sql.Connection"],

‎spring-graalvm-native-samples/batch/src/main/resources/META-INF/native-image/resource-config.json

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{
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"resources":[
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{"pattern":"\\Q/org/hsqldb/resources/information-schema.sql\\E"},
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{"pattern":"\\Qorg/hsqldb/resources/information-schema.sql\\E"},
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{"pattern":"\\Qorg/hsqldb/resources/.*\\E"},
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{"pattern":"\\QMETA-INF/services/java.sql.Driver\\E"},
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{"pattern":"\\QMETA-INF/services/jdk.vm.ci.hotspot.HotSpotJVMCIBackendFactory\\E"},
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{"pattern":"\\QMETA-INF/services/jdk.vm.ci.services.JVMCIServiceLocator\\E"},

‎spring-graalvm-native-samples/batch/src/main/resources/application.yml

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logging:
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level:
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root: DEBUG
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spring:
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aop:
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proxy-target-class: false
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root: DEBUG

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