pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>berlin.yuna</groupId>
    <artifactId>nats-graalvm-example</artifactId>
    <version>1.0.0</version>

    <properties>
        <!-- PROPERTIES -->
        <java-version>21</java-version>
        <project.encoding>UTF-8</project.encoding>
        <project.build.sourceEncoding>${project.encoding}</project.build.sourceEncoding>
        <project.reporting.outputEncoding>${project.encoding}</project.reporting.outputEncoding>

        <!-- PRODUCTION -->
        <nats-server.version>2.10.9</nats-server.version>
        <jnats.version>2.17.4</jnats.version>

        <!-- BUILD -->
        <maven-compiler-plugin.version>3.13.0</maven-compiler-plugin.version>
        <native-image-maven-plugin.version>21.2.0</native-image-maven-plugin.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>berlin.yuna</groupId>
            <artifactId>nats-server</artifactId>
            <version>${nats-server.version}</version>
        </dependency>
        <dependency>
            <groupId>io.nats</groupId>
            <artifactId>jnats</artifactId>
            <version>${jnats.version}</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>${maven-compiler-plugin.version}</version>
                <configuration>
                    <source>${java-version}</source>
                    <target>${java-version}</target>
                </configuration>
            </plugin>
        </plugins>
    </build>

    <profiles>
        <!-- NATIVE COMPILATION -->
        <profile>
            <id>native</id>
            <build>
                <plugins>
                    <plugin>
                        <groupId>org.graalvm.nativeimage</groupId>
                        <artifactId>native-image-maven-plugin</artifactId>
                        <version>${native-image-maven-plugin.version}</version>
                        <configuration>
                            <imageName>native-executable</imageName>
                            <mainClass>berlin.yuna.nativeexample.Main</mainClass>
                            <buildArgs>
                                <!-- Reduces the image size - Ensures the native image doesn't include the JVM as a fallback option -->
                                <buildArg>--no-fallback</buildArg>
                                <!-- Disables the use of the GraalVM compilation server -->
                                <buildArg>--no-server</buildArg>
                                <!-- Improve startup time - Initialize classes at build time rather than at runtime -->
                                <buildArg>--initialize-at-build-time</buildArg>
                                <!-- Nats Specific parameter -->
                                <buildArg>--initialize-at-run-time=io.nats.client.support.RandomUtils</buildArg>
                                <buildArg>--initialize-at-run-time=java.security.SecureRandom</buildArg>
                            </buildArgs>
                        </configuration>
                        <executions>
                            <execution>
                                <goals>
                                    <goal>native-image</goal>
                                </goals>
                                <phase>package</phase>
                            </execution>
                        </executions>
                    </plugin>
                </plugins>
            </build>
        </profile>
    </profiles>

</project>