Issue
I'm trying to get started with JMH under Eclipse. I can build a jar to execute from the command line but would also like me be able to run it directly within Eclipse for ease of development.
Currently I'm getting:
java.lang.RuntimeException: ERROR: Unable to find the resource: /META-INF/BenchmarkList
I'm using the simple starter case from http://nitschinger.at/Using-JMH-for-Java-Microbenchmarking/:
public class MyBenchmark {
@Benchmark
public void testMethod() {
// This is a demo/sample template for building your JMH benchmarks. Edit as needed.
// Put your benchmark code here.
}
public static void main(String... args) throws Exception {
Options opts = new OptionsBuilder()
.include(".*")
.warmupIterations(10)
.measurementIterations(10)
// .jvmArgs("-server")
.forks(1)
// .outputFormat(OutputFormatType.TextReport)
.build();
new Runner(opts).run();
}
}
I generated the POM as specified in the JMH docs and added the exec-maven-plugin as specified in JMH Unable to find the resource: /META-INF/BenchmarkList:
<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>org.sample</groupId>
<artifactId>test</artifactId>
<version>1.0</version>
<packaging>jar</packaging>
<name>JMH benchmark sample: Java</name>
<!-- This is the demo/sample template build script for building Java benchmarks
with JMH. Edit as needed. -->
<prerequisites>
<maven>3.0</maven>
</prerequisites>
<dependencies>
<dependency>
<groupId>org.openjdk.jmh</groupId>
<artifactId>jmh-core</artifactId>
<version>${jmh.version}</version>
</dependency>
<dependency>
<groupId>org.openjdk.jmh</groupId>
<artifactId>jmh-generator-annprocess</artifactId>
<version>${jmh.version}</version>
<scope>provided</scope>
</dependency>
</dependencies>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<!-- JMH version to use with this project. -->
<jmh.version>1.15</jmh.version>
<!-- Java source/target to use for compilation. -->
<javac.target>1.8</javac.target>
<!-- Name of the benchmark Uber-JAR to generate. -->
<uberjar.name>benchmarks</uberjar.name>
</properties>
<build>
<plugins>
<!-- <plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<configuration>
<compilerVersion>${javac.target}</compilerVersion>
<source>${javac.target}</source>
<target>${javac.target}</target>
</configuration>
</plugin> -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>2.2</version>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<finalName>${uberjar.name}</finalName>
<transformers>
<transformer
implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
<mainClass>org.openjdk.jmh.Main</mainClass>
</transformer>
</transformers>
<filters>
<filter>
<!-- Shading signed JARs will fail without this. https://stackoverflow.com/questions/999489/invalid-signature-file-when-attempting-to-run-a-jar -->
<artifact>*:*</artifact>
<excludes>
<exclude>META-INF/*.SF</exclude>
<exclude>META-INF/*.DSA</exclude>
<exclude>META-INF/*.RSA</exclude>
</excludes>
</filter>
</filters>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.3</version>
<configuration>
<compilerVersion>${javac.target}</compilerVersion>
<source>${javac.target}</source>
<target>${javac.target}</target>
</configuration>
</plugin>
<!-- <plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>1.4.0</version>
<configuration>
<executable>java</executable>
<arguments>
<argument>-classpath</argument>
<classpath />
<argument>com.javapapers.java.benchmark.jmh.JMHHelloWorld</argument>
</arguments>
</configuration>
</plugin> -->
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<executions>
<execution>
<id>run-benchmarks</id>
<phase>integration-test</phase>
<goals>
<goal>exec</goal>
</goals>
<configuration>
<classpathScope>test</classpathScope>
<executable>java</executable>
<arguments>
<argument>-classpath</argument>
<classpath />
<argument>org.openjdk.jmh.Main</argument>
<argument>.*</argument>
</arguments>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
<pluginManagement>
<plugins>
<plugin>
<artifactId>maven-clean-plugin</artifactId>
<version>2.5</version>
</plugin>
<plugin>
<artifactId>maven-deploy-plugin</artifactId>
<version>2.8.1</version>
</plugin>
<plugin>
<artifactId>maven-install-plugin</artifactId>
<version>2.5.1</version>
</plugin>
<plugin>
<artifactId>maven-jar-plugin</artifactId>
<version>2.4</version>
</plugin>
<plugin>
<artifactId>maven-javadoc-plugin</artifactId>
<version>2.9.1</version>
</plugin>
<plugin>
<artifactId>maven-resources-plugin</artifactId>
<version>2.6</version>
</plugin>
<plugin>
<artifactId>maven-site-plugin</artifactId>
<version>3.3</version>
</plugin>
<plugin>
<artifactId>maven-source-plugin</artifactId>
<version>2.2.1</version>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.17</version>
</plugin>
</plugins>
</pluginManagement>
</build>
</project>
I'm launching with an Eclipse Run Configuration as follows:
I can see that the missing resource /META-INF/BenchmarkList /is/ in the jar but /not/ in the /target directory.
Is it possible to get this executing under Eclipse?
Solution
I run JMH tests in Eclipse all the time (for debug purposes), but I run maven build separately before running tests, while tests are executed as a Java application:
Step 1: build Maven project
- Right click on project,
- Select Run As,
- Select Maven Build and specify goals as
clean install
(this step can also be done in command line by running the same goals)
Step 2: run tests
- Right click on project,
- Select Run As,
- Select Java Application and choose either
Main - org.openjdk.jmhor the main you created
Answered By - jjquirckart
Answer Checked By - Cary Denson (JavaFixing Admin)
