graalvm native image 试用

graalvm 提供的native 模式，可以加速应用的启动，不同可以让应用不再依赖jvm 运行时环境，但是
也有一些限制 参考 https://github.com/oracle/graal/blob/master/substratevm/LIMITATIONS.md

项目准备

• 项目结构

 

├── Dockerfile

├── pom.xml

└── src

    ├── main

    │ ├── java

    │ │ └── com

    │ │ └── dalong

    │ │ └── Application.java

    │ └── resources

    └── test

        └── java

 

 

• maven pom.xml
  代码是一个简单的调用js 的代码，使用了graalvm 的polyglot 特性
  同时包含了native-image 的maven plugin 方便生成native 模式的可运行软件

 

<?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>com.dalong</groupId>

    <artifactId>js-exec</artifactId>

    <version>1.0-SNAPSHOT</version>

    <properties>

        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

        <encoding>UTF-8</encoding>

        <java.version>1.8</java.version>

        <maven.compiler.source>1.8</maven.compiler.source>

        <maven.compiler.target>1.8</maven.compiler.target>

    </properties>

    <dependencies>

        <dependency>

            <groupId>org.graalvm.js</groupId>

            <artifactId>js</artifactId>

            <version>19.2.1</version>

        </dependency>

    </dependencies>

​

    <build>

        <finalName>native-image-js</finalName>

        <plugins>

            <plugin>

                <groupId>org.apache.maven.plugins</groupId>

                <artifactId>maven-jar-plugin</artifactId>

                <version>2.4</version>

                <configuration>

                    <archive>

                        <manifest>

                            <addClasspath>true</addClasspath>

                            <classpathPrefix>lib/</classpathPrefix>

                            <mainClass>com.dalong.Application</mainClass>

                        </manifest>

                    </archive>

                </configuration>

            </plugin>

            <plugin>

                <groupId>com.oracle.substratevm</groupId>

                <artifactId>native-image-maven-plugin</artifactId>

                <version>19.2.0.1</version>

                <configuration>

                    <buildArgs>--language:js</buildArgs>

                    <imageName>${project.artifactId}</imageName>

                </configuration>

                <executions>

                    <execution>

                        <goals>

                            <goal>native-image</goal>

                        </goals>

                        <phase>package</phase>

                    </execution>

                </executions>

            </plugin>

        </plugins>

    </build>

</project>

• 代码
  Application.java

 

package com.dalong;

import org.graalvm.polyglot.*;

/**

 * @author dalong

 */

public class Application {

    /**

     * main for test graalvm exec js

     * @param args

     */

    public static void main(String[] args) {

        System.out.println("Hello Java!");

        try (Context context = Context.create()) {

            context.eval("js", "print('Hello JavaScript!');");

        }

    }

} 

• dockerfile
  注意此构建是通过本机模式生成的（linux），我们也可以使用docker multi stage 的模式构建

 

FROM debian:9-slim

LABEL maintainer="dalongrong"

LABEL email = "1141591465@qq.com"

COPY target/js-exec /js-exec

CMD [ "/js-exec" ]

构建&&测试

• 本地构建

  注意需要安装graalvm 可以通过sdkman 安装

mvn clean package

效果

[INFO] ImageClasspath Entry: org.graalvm.js:js:jar:19.2.1:compile (file:///Users/dalong/.m2/repository/org/graalvm/js/js/19.2.1/js-19.2.1.jar)

[INFO] ImageClasspath Entry: org.graalvm.regex:regex:jar:19.2.1:compile (file:///Users/dalong/.m2/repository/org/graalvm/regex/regex/19.2.1/regex-19.2.1.jar)

[INFO] ImageClasspath Entry: org.graalvm.truffle:truffle-api:jar:19.2.1:compile (file:///Users/dalong/.m2/repository/org/graalvm/truffle/truffle-api/19.2.1/truffle-api-19.2.1.jar)

[INFO] ImageClasspath Entry: org.graalvm.sdk:graal-sdk:jar:19.2.1:compile (file:///Users/dalong/.m2/repository/org/graalvm/sdk/graal-sdk/19.2.1/graal-sdk-19.2.1.jar)

[INFO] ImageClasspath Entry: org.ow2.asm:asm:jar:6.2.1:compile (file:///Users/dalong/.m2/repository/org/ow2/asm/asm/6.2.1/asm-6.2.1.jar)

[INFO] ImageClasspath Entry: org.ow2.asm:asm-tree:jar:6.2.1:compile (file:///Users/dalong/.m2/repository/org/ow2/asm/asm-tree/6.2.1/asm-tree-6.2.1.jar)

[INFO] ImageClasspath Entry: org.ow2.asm:asm-analysis:jar:6.2.1:compile (file:///Users/dalong/.m2/repository/org/ow2/asm/asm-analysis/6.2.1/asm-analysis-6.2.1.jar)

[INFO] ImageClasspath Entry: org.ow2.asm:asm-commons:jar:6.2.1:compile (file:///Users/dalong/.m2/repository/org/ow2/asm/asm-commons/6.2.1/asm-commons-6.2.1.jar)

[INFO] ImageClasspath Entry: org.ow2.asm:asm-util:jar:6.2.1:compile (file:///Users/dalong/.m2/repository/org/ow2/asm/asm-util/6.2.1/asm-util-6.2.1.jar)

[INFO] ImageClasspath Entry: com.ibm.icu:icu4j:jar:62.1:compile (file:///Users/dalong/.m2/repository/com/ibm/icu/icu4j/62.1/icu4j-62.1.jar)

[INFO] ImageClasspath Entry: com.dalong:js-exec:jar:1.0-SNAPSHOT (file:///Users/dalong/quarkus-cloud-native/quarkus-quickstarts/jsexec/target/native-image-js.jar)

[WARNING] Version mismatch between native-image-maven-plugin (19.2.0.1) and native-image executable (19.2.1)

[INFO] Executing: /Users/dalong/.sdkman/candidates/java/19.2.1-grl/jre/bin/native-image -cp /Users/dalong/.m2/repository/org/graalvm/js/js/19.2.1/js-19.2.1.jar:/Users/dalong/.m2/repository/org/graalvm/regex/regex/19.2.1/regex-19.2.1.jar:/Users/dalong/.m2/repository/org/graalvm/truffle/truffle-api/19.2.1/truffle-api-19.2.1.jar:/Users/dalong/.m2/repository/org/graalvm/sdk/graal-sdk/19.2.1/graal-sdk-19.2.1.jar:/Users/dalong/.m2/repository/org/ow2/asm/asm/6.2.1/asm-6.2.1.jar:/Users/dalong/.m2/repository/org/ow2/asm/asm-tree/6.2.1/asm-tree-6.2.1.jar:/Users/dalong/.m2/repository/org/ow2/asm/asm-analysis/6.2.1/asm-analysis-6.2.1.jar:/Users/dalong/.m2/repository/org/ow2/asm/asm-commons/6.2.1/asm-commons-6.2.1.jar:/Users/dalong/.m2/repository/org/ow2/asm/asm-util/6.2.1/asm-util-6.2.1.jar:/Users/dalong/.m2/repository/com/ibm/icu/icu4j/62.1/icu4j-62.1.jar:/Users/dalong/quarkus-cloud-native/quarkus-quickstarts/jsexec/target/native-image-js.jar --language:js -H:Class=com.dalong.Application -H:Name=js-exec

Build on Server(pid: 88272, port: 60056)*

[js-exec:88272] classlist: 5,881.54 ms

[js-exec:88272] (cap): 4,853.08 ms

[js-exec:88272] setup: 7,128.30 ms

[js-exec:88272] (typeflow): 32,678.52 ms

[js-exec:88272] (objects): 19,067.05 ms

[js-exec:88272] (features): 10,743.39 ms

[js-exec:88272] analysis: 65,674.81 ms

[js-exec:88272] (clinit): 1,198.02 ms

8711 method(s) included for runtime compilation

[js-exec:88272] universe: 4,099.50 ms

[js-exec:88272] (parse): 8,269.88 ms

[js-exec:88272] (inline): 8,757.03 ms

[js-exec:88272] (compile): 57,386.27 ms

[js-exec:88272] compile: 78,905.65 ms

[js-exec:88272] image: 13,244.40 ms

[js-exec:88272] write: 3,109.99 ms

[js-exec:88272] [total]: 179,773.77 ms

[INFO] ------------------------------------------------------------------------

[INFO] BUILD SUCCESS

[INFO] ------------------------------------------------------------------------

[INFO] Total time: 03:10 min

[INFO] Finished at: 2019-11-20T19:34:36+08:00

[INFO] ---------------------------------------------

• 运行效果

./target/js-exec 

Hello Java!

Hello JavaScript!

参考资料

https://github.com/oracle/graal/blob/master/substratevm/LIMITATIONS.md
https://www.graalvm.org/docs/reference-manual/native-image/