Buildpacks Gradle integration

[manusa]

Description

Part of #439

As a user, I want to be able to use JKube's buildpacks functionality from Gradle, so that I can easily integrate buildpacks in my Gradle project.

[rohanKanojia]

We have added BuildPackBuildService in jkube-kit/config/service module.

This module is already added as a dependency in kubernetes-gradle-plugin

https://github.com/eclipse/jkube/blob/d828cd269470d354e752351a0539e98c7c02f31e/gradle-plugin/kubernetes/pom.xml#L40-L44

[rohanKanojia]

I tested on a simple Spring Boot Project and I was able to test k8sBuild with BuildPacks Build strategy:

gradle-it : $ gradle k8sBuild -Pjkube.buildpacks.strategy=buildpacks
To honour the JVM settings for this build a single-use Daemon process will be forked. For more on this, please refer to https://docs.gradle.org/8.5/userguide/gradle_daemon.html#sec:disabling_the_daemon in the Gradle documentation.
Daemon will be stopped at the end of the build 

> Task :k8sBuild
k8s: Running generator spring-boot
k8s: spring-boot: Using Docker image quay.io/jkube/jkube-java:0.0.23 as base / builder
k8s: Spring Boot layered jar detected
k8s: Building container image in Kubernetes mode
k8s: Delegating container image building process to BuildPacks
k8s: Using pack /home/rokumar/.jkube/pack
k8s: base: Pulling from paketobuildpacks/builder
k8s: Digest: sha256:17ea21162ba8c7717d3ead3ee3836a368aced7f02f2e59658e52029bd6d149e7
k8s: Status: Image is up to date for paketobuildpacks/builder:base
k8s: base-cnb: Pulling from paketobuildpacks/run
k8s: Digest: sha256:1af9935d8987fd52b2266d288200c9482d1dd5529860bbf5bc2d248de1cb1a38
k8s: Status: Image is up to date for paketobuildpacks/run:base-cnb
k8s: 0.16.5: Pulling from buildpacksio/lifecycle
k8s: Digest: sha256:6328c7b662c452111e39f1f5d5d097292d07c218ba4a873f0ad0c2cb67710869
k8s: Status: Image is up to date for buildpacksio/lifecycle:0.16.5
k8s: ===> ANALYZING
k8s: [analyzer] Restoring data for SBOM from previous image
k8s: ===> DETECTING
k8s: [detector] 10 of 26 buildpacks participating
k8s: [detector] paketo-buildpacks/ca-certificates   3.6.3
k8s: [detector] paketo-buildpacks/bellsoft-liberica 10.2.6
k8s: [detector] paketo-buildpacks/syft              1.32.1
k8s: [detector] paketo-buildpacks/gradle            7.3.0
k8s: [detector] paketo-buildpacks/executable-jar    6.7.4
k8s: [detector] paketo-buildpacks/apache-tomcat     7.13.7
k8s: [detector] paketo-buildpacks/apache-tomee      1.7.4
k8s: [detector] paketo-buildpacks/liberty           3.8.2
k8s: [detector] paketo-buildpacks/dist-zip          5.6.4
k8s: [detector] paketo-buildpacks/spring-boot       5.26.1
k8s: ===> RESTORING
k8s: [restorer] Restoring metadata for "paketo-buildpacks/ca-certificates:helper" from app image
k8s: [restorer] Restoring metadata for "paketo-buildpacks/bellsoft-liberica:jre" from app image
k8s: [restorer] Restoring metadata for "paketo-buildpacks/bellsoft-liberica:helper" from app image
k8s: [restorer] Restoring metadata for "paketo-buildpacks/bellsoft-liberica:java-security-properties" from app image
k8s: [restorer] Restoring metadata for "paketo-buildpacks/bellsoft-liberica:jdk" from cache
k8s: [restorer] Restoring metadata for "paketo-buildpacks/syft:syft" from cache
k8s: [restorer] Restoring metadata for "paketo-buildpacks/gradle:application" from cache
k8s: [restorer] Restoring metadata for "paketo-buildpacks/gradle:cache" from cache
k8s: [restorer] Restoring data for "paketo-buildpacks/bellsoft-liberica:jdk" from cache
k8s: [restorer] Restoring data for "paketo-buildpacks/syft:syft" from cache
k8s: [restorer] Restoring data for "paketo-buildpacks/gradle:application" from cache
k8s: [restorer] Restoring data for "paketo-buildpacks/gradle:cache" from cache
k8s: [restorer] Restoring data for SBOM from cache
k8s: ===> BUILDING
k8s: [builder] 
k8s: [builder] Paketo Buildpack for CA Certificates 3.6.3
k8s: [builder]   https://github.com/paketo-buildpacks/ca-certificates
k8s: [builder]   Launch Helper: Reusing cached layer
k8s: [builder] 
k8s: [builder] Paketo Buildpack for BellSoft Liberica 10.2.6
k8s: [builder]   https://github.com/paketo-buildpacks/bellsoft-liberica
k8s: [builder]   Build Configuration:
k8s: [builder]     $BP_JVM_JLINK_ARGS           --no-man-pages --no-header-files --strip-debug --compress=1  configure custom link arguments (--output must be omitted)
k8s: [builder]     $BP_JVM_JLINK_ENABLED        false                                                        enables running jlink tool to generate custom JRE
k8s: [builder]     $BP_JVM_TYPE                 JRE                                                          the JVM type - JDK or JRE
k8s: [builder]     $BP_JVM_VERSION              17                                                           the Java version
k8s: [builder]   Launch Configuration:
k8s: [builder]     $BPL_DEBUG_ENABLED           false                                                        enables Java remote debugging support
k8s: [builder]     $BPL_DEBUG_PORT              8000                                                         configure the remote debugging port
k8s: [builder]     $BPL_DEBUG_SUSPEND           false                                                        configure whether to suspend execution until a debugger has attached
k8s: [builder]     $BPL_HEAP_DUMP_PATH                                                                       write heap dumps on error to this path
k8s: [builder]     $BPL_JAVA_NMT_ENABLED        true                                                         enables Java Native Memory Tracking (NMT)
k8s: [builder]     $BPL_JAVA_NMT_LEVEL          summary                                                      configure level of NMT, summary or detail
k8s: [builder]     $BPL_JFR_ARGS                                                                             configure custom Java Flight Recording (JFR) arguments
k8s: [builder]     $BPL_JFR_ENABLED             false                                                        enables Java Flight Recording (JFR)
k8s: [builder]     $BPL_JMX_ENABLED             false                                                        enables Java Management Extensions (JMX)
k8s: [builder]     $BPL_JMX_PORT                5000                                                         configure the JMX port
k8s: [builder]     $BPL_JVM_HEAD_ROOM           0                                                            the headroom in memory calculation
k8s: [builder]     $BPL_JVM_LOADED_CLASS_COUNT  35% of classes                                               the number of loaded classes in memory calculation
k8s: [builder]     $BPL_JVM_THREAD_COUNT        250                                                          the number of threads in memory calculation
k8s: [builder]     $JAVA_TOOL_OPTIONS                                                                        the JVM launch flags
k8s: [builder]     Using buildpack default Java version 17
k8s: [builder]   BellSoft Liberica JDK 17.0.7: Reusing cached layer
k8s: [builder]   BellSoft Liberica JRE 17.0.7: Reusing cached layer
k8s: [builder]   Launch Helper: Reusing cached layer
k8s: [builder]   Java Security Properties: Reusing cached layer
k8s: [builder] 
k8s: [builder] Paketo Buildpack for Syft 1.32.1
k8s: [builder]   https://github.com/paketo-buildpacks/syft
k8s: [builder]     Downloading from https://github.com/anchore/syft/releases/download/v0.84.0/syft_0.84.0_linux_amd64.tar.gz
k8s: [builder]     Verifying checksum
k8s: [builder]     Writing env.build/SYFT_CHECK_FOR_APP_UPDATE.default
k8s: [builder] 
k8s: [builder] Paketo Buildpack for Gradle 7.3.0
k8s: [builder]   https://github.com/paketo-buildpacks/gradle
k8s: [builder]   Build Configuration:
k8s: [builder]     $BP_EXCLUDE_FILES                                                                       colon separated list of glob patterns, matched source files are removed
k8s: [builder]     $BP_GRADLE_ADDITIONAL_BUILD_ARGUMENTS                                                   the additionnal arguments (appended to BP_GRADLE_BUILD_ARGUMENTS) to pass to Gradle
k8s: [builder]     $BP_GRADLE_BUILD_ARGUMENTS             --no-daemon -Dorg.gradle.welcome=never assemble  the arguments to pass to Gradle
k8s: [builder]     $BP_GRADLE_BUILD_FILE                                                                   the location of the main build config file, relative to the application root
k8s: [builder]     $BP_GRADLE_BUILT_ARTIFACT              build/libs/*.[jw]ar                              the built application artifact explicitly.  Supersedes $BP_GRADLE_BUILT_MODULE
k8s: [builder]     $BP_GRADLE_BUILT_MODULE                                                                 the module to find application artifact in
k8s: [builder]     $BP_GRADLE_INIT_SCRIPT_PATH                                                             the path to a Gradle init script file
k8s: [builder]     $BP_INCLUDE_FILES                                                                       colon separated list of glob patterns, matched source files are included
k8s: [builder]     $BP_JAVA_INSTALL_NODE                  false                                            whether to install Yarn/Node binaries based on the presence of a package.json or yarn.lock file
k8s: [builder]     $BP_NODE_PROJECT_PATH                                                                   configure a project subdirectory to look for `package.json` and `yarn.lock` files
k8s: [builder]     Creating cache directory /home/cnb/.gradle
k8s: [builder]   Compiled Application: Contributing to layer
k8s: [builder]     Executing gradlew --no-daemon -Dorg.gradle.welcome=never assemble
k8s: [builder]       To honour the JVM settings for this build a single-use Daemon process will be forked. For more on this, please refer to https://docs.gradle.org/8.2.1/userguide/gradle_daemon.html#sec:disabling_the_daemon in the Gradle documentation.
k8s: [builder]       Daemon will be stopped at the end of the build 
k8s: [builder]       > Task :compileJava
k8s: [builder]       > Task :processResources
k8s: [builder]       > Task :classes
k8s: [builder]       > Task :resolveMainClassName
k8s: [builder]       > Task :bootJar
k8s: [builder]       > Task :jar
k8s: [builder]       > Task :assemble
k8s: [builder]       
k8s: [builder]       BUILD SUCCESSFUL in 8s
k8s: [builder]       5 actionable tasks: 5 executed
k8s: [builder] 
k8s: [builder]   Removing source code
k8s: [builder]   Restoring multiple artifacts
k8s: [builder] 
k8s: [builder] Paketo Buildpack for Executable JAR 6.7.4
k8s: [builder]   https://github.com/paketo-buildpacks/executable-jar
k8s: [builder]   Process types:2s]
k8s: [builder]     executable-jar: java -jar /workspace/jkube-buildpacks-buildstrategy-poc-demo-0.0.1-SNAPSHOT.jar (direct)
k8s: [builder]     task:           java -jar /workspace/jkube-buildpacks-buildstrategy-poc-demo-0.0.1-SNAPSHOT.jar (direct)
k8s: [builder]     web:            java -jar /workspace/jkube-buildpacks-buildstrategy-poc-demo-0.0.1-SNAPSHOT.jar (direct)
k8s: ===> EXPORTING
k8s: [exporter] Reusing layer 'paketo-buildpacks/ca-certificates:helper'
k8s: [exporter] Reusing layer 'paketo-buildpacks/bellsoft-liberica:helper'
k8s: [exporter] Reusing layer 'paketo-buildpacks/bellsoft-liberica:java-security-properties'
k8s: [exporter] Reusing layer 'paketo-buildpacks/bellsoft-liberica:jre'
k8s: [exporter] Adding layer 'buildpacksio/lifecycle:launch.sbom'
k8s: [exporter] Adding 1/1 app layer(s)
k8s: [exporter] Reusing layer 'buildpacksio/lifecycle:launcher'
k8s: [exporter] Reusing layer 'buildpacksio/lifecycle:config'
k8s: [exporter] Reusing layer 'buildpacksio/lifecycle:process-types'
k8s: [exporter] Adding label 'io.buildpacks.lifecycle.metadata'
k8s: [exporter] Adding label 'io.buildpacks.build.metadata'
k8s: [exporter] Adding label 'io.buildpacks.project.metadata'
k8s: [exporter] Setting default process type 'web'
k8s: [exporter] Saving user/jkube-buildpacks-buildstrategy-poc-demo:latest...
k8s: [exporter] *** Images (ba2bdda8162a):
k8s: [exporter]       user/jkube-buildpacks-buildstrategy-poc-demo:latest
k8s: [exporter] Reusing cache layer 'paketo-buildpacks/bellsoft-liberica:jdk'
k8s: [exporter] Reusing cache layer 'paketo-buildpacks/syft:syft'
k8s: [exporter] Adding cache layer 'paketo-buildpacks/gradle:application'
k8s: [exporter] Adding cache layer 'paketo-buildpacks/gradle:cache'
k8s: [exporter] Reusing cache layer 'buildpacksio/lifecycle:cache.sbom'
k8s: Successfully built image 'user/jkube-buildpacks-buildstrategy-poc-demo:latest'

Deprecated Gradle features were used in this build, making it incompatible with Gradle 9.0.

You can use '--warning-mode all' to show the individual deprecation warnings and determine if they come from your own scripts or plugins.

For more on this, please refer to https://docs.gradle.org/8.5/userguide/command_line_interface.html#sec:command_line_warnings in the Gradle documentation.

BUILD SUCCESSFUL in 39s
1 actionable task: 1 executed

[manusa]

Closing as complete