GraalVM安装与Native-Image体验

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GraalVM安装与Native-Image体验

GraalVM安装与Native-Image体验

安装环境

Linux Mint 20 64bit

GraalVM安装

下载安装文件

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wget https://github.com/graalvm/graalvm-ce-builds/releases/download/vm-20.2.0/graalvm-ce-java11-linux-amd64-20.2.0.tar.gz
wget https://github.com/graalvm/graalvm-ce-builds/releases/download/vm-20.2.0/llvm-toolchain-installable-java11-linux-amd64-20.2.0.jar
wget https://github.com/graalvm/graalvm-ce-builds/releases/download/vm-20.2.0/native-image-installable-svm-java11-linux-amd64-20.2.0.jar
wget https://github.com/graalvm/graalvm-ce-builds/releases/download/vm-20.2.0/wasm-installable-svm-java11-linux-amd64-20.2.0.jar

安装与配置

解压graal到安装位置

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tar -xzf graalvm-ce-java11-linux-amd64-20.2.0.tar.gz -C ${安装位置}

配置环境变量

系统环境变量

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#sudo vim /et/profile
export JAVA_HOME=${安装位置}/graalvm-ce-java11-linux-amd64-20.2.0
export PATH=${JAVA_HOME}/bin:${PATH}

用户环境变量

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#sudo vim ~/.bashrc
export JAVA_HOME=${安装位置}/graalvm-ce-java11-linux-amd64-20.2.0
export PATH=${JAVA_HOME}/bin:${PATH}

安装组件

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gu -L install llvm-toolchain-installable-java11-linux-amd64-20.2.0.jar
gu -L install native-image-installable-svm-java11-linux-amd64-20.2.0.jar
gu -L install wasm-installable-svm-java11-linux-amd64-20.2.0.jar

运行gu list可以看到已安装组件

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tqd@tqd-pc:/data/me/blog-test$ gu list
ComponentId              Version             Component name      Origin 
--------------------------------------------------------------------------------
js                       20.2.0              Graal.js            
graalvm                  20.2.0              GraalVM Core        
llvm-toolchain           20.2.0              LLVM.org toolchain  
native-image             20.2.0              Native Image        
wasm                     20.2.0              GraalWasm

Native-Image体验

创建Maven工程

POM文件

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#cat pom.xml
<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>com.tqd.test</groupId>
	<artifactId>cli-test</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<packaging>jar</packaging>

	<name>cli-test</name>
	<url>http://maven.apache.org</url>

	<properties>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
		<maven.compiler.source>1.8</maven.compiler.source>
		<maven.compiler.target>1.8</maven.compiler.target>
	</properties>

	<dependencies>
		<dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<version>4.13.2</version>
			<scope>test</scope>
		</dependency>
		<dependency>
			<groupId>info.picocli</groupId>
			<artifactId>picocli</artifactId>
			<version>4.6.1</version>
		</dependency>
		<dependency>
			<groupId>info.picocli</groupId>
			<artifactId>picocli-codegen</artifactId>
			<version>4.6.1</version>
			<scope>provided</scope>
		</dependency>
	</dependencies>
	<build>
		<plugins>
			<plugin>
				<groupId>org.graalvm.nativeimage</groupId>
				<artifactId>native-image-maven-plugin</artifactId>
				<version>20.2.0</version>
				<configuration>
					<imageName>${project.name}</imageName>
					<mainClass>com.tqd.test.App</mainClass>
				</configuration>
				<executions>
					<execution>
						<goals>
							<goal>native-image</goal>
						</goals>
						<phase>package</phase>
					</execution>
				</executions>
			</plugin>
		</plugins>
	</build>
</project>

Java文件

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#cat src/main/java/com/tqd/test/App.java
package com.tqd.test;

import picocli.CommandLine;
import picocli.CommandLine.Parameters;

public class App {
public static void main( String[] args ){
	Cli cli=new Cli();
	new CommandLine(cli).execute(args);

}

public static class Cli implements Runnable {
	
	@Parameters(paramLabel = "name",description = "the name of you",defaultValue = "Bob")
	private String name;

@Override
public void run() {
System.out.printf( "Hello %s!\n",name);
}
}
}

#### 编译
```shell
mvn package -DskipTests

测试

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./target/cli-test ttt
#输出: Hello ttt!
docker run --rm -ti -v $(pwd)/target:/test ubuntu /test/cli-test ttt
#输出:Hello ttt!

注意事项

  1. 构建native image时，如果jar中没有配置文件，那么构建出来的native image运行是需要Java运行时。

参考

  1. Graalvm
  2. Graalvm Configuration
  3. picocli
  4. picocli-codegen
  5. 完整代码