chore: build native example :)

.checkstyle/checkstyle-suppressions.xml

@@ -4,4 +4,5 @@
         "https://checkstyle.org/dtds/suppressions_1_2.dtd">
 <suppressions>
     <suppress checks="(?:Javadoc.*)" files=".*[\\/]test[\\/].*"/>
+    <suppress checks=".*" files=".*[\\/]generated[\\/].*"/>
 </suppressions>

README.md

@@ -15,6 +15,9 @@ The example module contains a Spring Boot application with a couple of commands.
 
 - auto-discovery of `CommandBean` instances as well as `@ScanCommands`-annotated classes
 - supports both interactive & non-interactive (CLI) commands
+
+![cli](img/cli.png)
+
 - support for Spring Shell features such as descriptions and command groups
 
 ![descriptions](img/descriptions.png)
@@ -25,6 +28,10 @@ The example module contains a Spring Boot application with a couple of commands.
 
 ![completions](img/completions.png)
 
+- support for native builds
+
+![native](img/native.png)
+
 ## limitations
 
 - no intermediate executors (you can do `/cat add` and `/cat remove` but not `/cat`)

build-logic/build.gradle.kts

@@ -1,3 +1,5 @@
+import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
+
 plugins {
     `kotlin-dsl`
     alias(libs.plugins.spotless)
@@ -15,6 +17,19 @@ dependencies {
     implementation(files(libs.javaClass.superclass.protectionDomain.codeSource.location))
 }
 
+java {
+    toolchain {
+        targetCompatibility = JavaVersion.VERSION_17
+        sourceCompatibility = JavaVersion.VERSION_17
+    }
+}
+
+tasks.withType<KotlinCompile>().configureEach {
+    kotlinOptions {
+        jvmTarget = "17"
+    }
+}
+
 spotless {
     kotlinGradle {
         target("*.gradle.kts", "src/*/kotlin/**.gradle.kts", "src/*/kotlin/**.kt")

build-logic/src/main/kotlin/cloud-spring.base-conventions.gradle.kts

@@ -15,12 +15,6 @@ indra {
     checkstyle(libs.versions.checkstyle.get())
 }
 
-tasks {
-    withType<JavaCompile> {
-        options.compilerArgs.addAll(listOf("-Xlint:-processing", "-Werror"))
-    }
-}
-
 spotless {
     fun FormatExtension.applyCommon(spaces: Int = 4) {
         indentWithSpaces(spaces)
@@ -31,6 +25,8 @@ spotless {
         licenseHeaderFile(rootProject.file("HEADER"))
         importOrderFile(rootProject.file(".spotless/cloud-spring.importorder"))
         applyCommon()
+
+        targetExclude("**/generated/**")
     }
     kotlin {
         licenseHeaderFile(rootProject.file("HEADER"))

example/build.gradle.kts

@@ -1,9 +1,38 @@
 plugins {
     id("cloud-spring.base-conventions")
     alias(libs.plugins.spring.plugin.boot)
+    alias(libs.plugins.graal.native.buildtools)
 }
+
 apply(plugin = "io.spring.dependency-management")
 
+graalvmNative {
+    binaries.all {
+        resources.autodetect()
+    }
+    binaries {
+        getByName("main") {
+            sharedLibrary = false
+            mainClass = "org.incendo.cloud.spring.example.ExampleApplication"
+            useFatJar = true
+            javaLauncher =
+                javaToolchains.launcherFor {
+                    languageVersion = JavaLanguageVersion.of(21)
+                    vendor = JvmVendorSpec.matching("GraalVM Community")
+                }
+        }
+    }
+    testSupport = false
+    toolchainDetection = false
+}
+
+java {
+    toolchain {
+        targetCompatibility = JavaVersion.VERSION_17
+        sourceCompatibility = JavaVersion.VERSION_17
+    }
+}
+
 dependencies {
     implementation(project(":cloud-spring"))
     implementation(libs.cloud.annotations)

example/src/main/java/org/incendo/cloud/spring/example/ExampleApplication.java

@@ -37,12 +37,6 @@ public class ExampleApplication {
 
     private static final Logger LOGGER = LoggerFactory.getLogger(ExampleApplication.class);
 
-    /**
-     * Example application entrypoint.
-     */
-    public ExampleApplication() {
-    }
-
     /**
      * Launches the example application.
      *

example/src/main/java/org/incendo/cloud/spring/example/ExampleConfig.java

@@ -28,8 +28,11 @@
 import org.incendo.cloud.spring.SpringCommandManager;
 import org.incendo.cloud.spring.SpringCommandSender;
 import org.incendo.cloud.spring.annotation.CommandGroup;
+import org.jline.utils.AttributedString;
+import org.jline.utils.AttributedStyle;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
+import org.springframework.shell.jline.PromptProvider;
 
 /**
  * Configuration for the example application.
@@ -49,4 +52,9 @@ public class ExampleConfig {
                 (annotation, builder) -> builder.meta(SpringCommandManager.COMMAND_GROUP_KEY, annotation.value()));
         return annotationParser;
     }
+
+    @Bean
+    @NonNull PromptProvider myPromptProvider() {
+        return () -> new AttributedString("cat-shell:>", AttributedStyle.DEFAULT.foreground(AttributedStyle.YELLOW));
+    }
 }

gradle/libs.versions.toml

@@ -1,14 +1,16 @@
 [plugins]
 spotless = { id = "com.diffplug.spotless", version.ref = "spotless" }
 spring-plugin-boot = { id = "org.springframework.boot", version.ref = "springBoot" }
+graal-native-buildtools = { id = "org.graalvm.buildtools.native", version.ref = "graal" }
 
 [versions]
-springBoot = "3.1.6"
+springBoot = "3.2.0"
 spotless = "6.22.0"
 ktlint = "1.0.1"
 indra = "3.1.3"
 checkstyle = "10.12.5"
 kotlin = "1.9.20"
+graal = "0.9.28"
 
 checkerQual = "3.40.0"
 apiguardian = "1.1.2"

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.4-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.5-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME