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I am building a CLI tool, which integrates with several EJB modules. For this reason, I need to build a fat jar, which is then executed as a standalone application.
However, executing this fat jar with java -jar (Note: conf/openejb.xml is in the same directory as the fat jar) fails with the following stacktrace:
INFORMATION - PersistenceUnit(name=demo, provider=org.hibernate.jpa.HibernatePersistenceProvider) - provider time 2706ms
INFORMATION - Jndi(name="java:global/DemoMain/demo-shade-1.0-SNAPSHOT/MEJB!javax.management.j2ee.ManagementHome")
INFORMATION - Jndi(name="java:global/DemoMain/demo-shade-1.0-SNAPSHOT/MEJB")
INFORMATION - Jndi(name="java:global/DemoMain/demo-shade-1.0-SNAPSHOT/openejb/Deployer!org.apache.openejb.assembler.Deployer")
INFORMATION - Jndi(name="java:global/DemoMain/demo-shade-1.0-SNAPSHOT/openejb/Deployer")
INFORMATION - Jndi(name="java:global/DemoMain/demo-shade-1.0-SNAPSHOT/openejb/ConfigurationInfo!org.apache.openejb.assembler.classic.cmd.ConfigurationInfo")
INFORMATION - Jndi(name="java:global/DemoMain/demo-shade-1.0-SNAPSHOT/openejb/ConfigurationInfo")
INFORMATION - Jndi(name="java:global/DemoMain/demo-shade-1.0-SNAPSHOT/DemoServiceImpl!com.github.rzo1.service.DemoService")
INFORMATION - Jndi(name="java:global/DemoMain/demo-shade-1.0-SNAPSHOT/DemoServiceImpl")
INFORMATION - Existing thread singleton service in SystemInstance(): org.apache.openejb.cdi.ThreadSingletonServiceImpl@557c8e7e
INFORMATION - Closing DataSource: demoDS
INFORMATION - Closing DataSource: demoDSNonJTA
Exception in thread "Thread-0" java.lang.RuntimeException: org.apache.openejb.OpenEjbContainer$AssembleApplicationException: javax.enterprise.inject.spi.DeploymentException: couldn't start owb context
at com.github.rzo1.DemoMain.run(DemoMain.java:116)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.apache.openejb.OpenEjbContainer$AssembleApplicationException: javax.enterprise.inject.spi.DeploymentException: couldn't start owb context
at org.apache.openejb.OpenEjbContainer$Provider.createEJBContainer(OpenEjbContainer.java:346)
at javax.ejb.embeddable.EJBContainer.createEJBContainer(EJBContainer.java:56)
at com.github.rzo1.DemoMain.run(DemoMain.java:90)
... 1 more
Caused by: javax.enterprise.inject.spi.DeploymentException: couldn't start owb context
at org.apache.openejb.cdi.ThreadSingletonServiceImpl.initialize(ThreadSingletonServiceImpl.java:191)
at org.apache.openejb.cdi.CdiBuilder.build(CdiBuilder.java:41)
at org.apache.openejb.assembler.classic.Assembler.createApplication(Assembler.java:913)
at org.apache.openejb.assembler.classic.Assembler.createApplication(Assembler.java:717)
at org.apache.openejb.OpenEjbContainer$Provider.createEJBContainer(OpenEjbContainer.java:342)
... 3 more
Caused by: org.apache.webbeans.exception.WebBeansException: Wrong startup object.
at org.apache.webbeans.web.lifecycle.WebContainerLifecycle.getServletContext(WebContainerLifecycle.java:227)
at org.apache.webbeans.web.lifecycle.WebContainerLifecycle.startApplication(WebContainerLifecycle.java:86)
at org.apache.openejb.cdi.ThreadSingletonServiceImpl.initialize(ThreadSingletonServiceImpl.java:189)
... 7 more
Executing the code directly from my IDE (IntelliJ) the standalone container comes up and behaves as expected.
Version Summary:
openejb in version 1.7.0 / openejb-server in version 7.0.2
maven-shade-plugin in version 2.4.3
Maven in version 3.3.9
hibernate in version 5.2.7
Basic Setup
I was able to reproduce my problem on a simple working example, which I added as an GitHub project for further investigation.
The basic project layout is as follows:
| # demo-shade
| - demo-services (EJB-Module)
| - demo-main (Shading happens here)
The configuration of the maven-shade-plugin is as follows:
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>2.4.3</version>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<finalName>demo-shade-${project.version}</finalName>
<transformers>
<transformer
implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
<manifestEntries>
<Main-Class>com.github.rzo1.DemoMain</Main-Class>
</manifestEntries>
</transformer>
<transformer implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer"/>
<transformer implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">
<resource>META-INF/openwebbeans/openwebbeans.properties</resource>
</transformer>
</transformers>
<filters>
<filter> <!-- we don't want JSF to be activated -->
<artifact>*:*</artifact>
<excludes>
<exclude>META-INF/faces-config.xml</exclude>
<exclude>META-INF/*.SF</exclude>
<exclude>META-INF/*.DSA</exclude>
<exclude>META-INF/*.RSA</exclude>
</excludes>
</filter>
</filters>
<shadedClassifierName>dist</shadedClassifierName>
</configuration>
</execution>
</executions>
</plugin>
The code to start up the container:
EJBContainer ejbContainer = null;
try {
final Properties properties = new Properties();
properties.setProperty(EJBContainer.APP_NAME, applicationName);
properties.setProperty(EJBContainer.PROVIDER, OpenEjbContainer.class.getName());
properties.setProperty(OpenEjbContainer.OPENEJB_EMBEDDED_REMOTABLE, "false");
properties.setProperty("ejbd.disabled", "true");
properties.setProperty("ejbds.disabled", "true");
properties.setProperty("admin.disabled", "true");
properties.setProperty("openejb.jaxrs.application", "false");
Path launchPath = Paths.get(DemoMain.class.getProtectionDomain().getCodeSource().getLocation().toURI());
properties.setProperty("openejb.configuration", launchPath.toAbsolutePath() + "/conf/openejb.xml");
properties.put("hibernate.dialect", "org.hibernate.dialect.HSQLDialect");
properties.put("hibernate.connection.driver_class", "org.hsqldb.jdbcDriver");
// This is the line starting the EJB container
ejbContainer = EJBContainer.createEJBContainer(properties);
ejbContainer.getContext().bind("inject", this);
ejbContainerReady = true;
final CountDownLatch latch = new CountDownLatch(1);
// Graceful shutdown
Runtime.getRuntime().addShutdownHook(new Thread() {
@Override
public void run() {
try {
logger.info("Shutting down..");
latch.countDown();
logger.info("Shutdown completed successfully.");
} catch (final Exception e) {
logger.error("Graceful shutdown went wrong. SIGKILL (kill -9) if you want.", e);
}
}
});
try {
latch.await();
} catch (final InterruptedException e) {
// ignored
}
} catch (final Exception e) {
ejbContainerReady = false;
throw new RuntimeException(e);
} finally {
if (ejbContainer != null) {
ejbContainer.close();
}
}
}
Questions
Did I miss something in the configuration of the maven-shade-plugin?
How can I build a fat jar using openejb in a standalone manner?
Example Project
UPDATE 1:
I changed the pom according to the answer by P. Merkle. I found an other article here describing the process of shading specifically for TomEE.
pom changed to
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>2.4.3</version>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<finalName>demo-shade-${project.version}</finalName>
<transformers>
<transformer
implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
<manifestEntries>
<Main-Class>com.github.rzo1.DemoMain</Main-Class>
</manifestEntries>
</transformer>
<transformer implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer"/>
<transformer implementation="org.apache.openwebbeans.maven.shade.OpenWebBeansPropertiesTransformer"/>
</transformers>
<filters>
<filter> <!-- we don't want JSF to be activated -->
<artifact>*:*</artifact>
<excludes>
<exclude>META-INF/faces-config.xml</exclude>
<exclude>META-INF/*.SF</exclude>
<exclude>META-INF/*.DSA</exclude>
<exclude>META-INF/*.RSA</exclude>
</excludes>
</filter>
</filters>
<shadedClassifierName>dist</shadedClassifierName>
</configuration>
</execution>
</executions>
<dependencies>
<dependency>
<groupId>org.apache.openwebbeans</groupId>
<artifactId>openwebbeans-maven</artifactId>
<version>1.7.0</version>
</dependency>
</dependencies>
</plugin>
Extecuting this fat jar brings:
INFORMATION - OpenWebBeans Container is starting...
INFORMATION - Adding OpenWebBeansPlugin : [CdiPlugin]
SCHWERWIEGEND - CDI Beans module deployment failed
java.lang.NullPointerException
at org.apache.openejb.cdi.CdiScanner.handleBda(CdiScanner.java:271)
at org.apache.openejb.cdi.CdiScanner.init(CdiScanner.java:148)
at org.apache.openejb.cdi.OpenEJBLifecycle.startApplication(OpenEJBLifecycle.java:179)
at org.apache.openejb.cdi.ThreadSingletonServiceImpl.initialize(ThreadSingletonServiceImpl.java:189)
at org.apache.openejb.cdi.CdiBuilder.build(CdiBuilder.java:41)
at org.apache.openejb.assembler.classic.Assembler.createApplication(Assembler.java:913)
at org.apache.openejb.assembler.classic.Assembler.createApplication(Assembler.java:717)
at org.apache.openejb.OpenEjbContainer$Provider.createEJBContainer(OpenEjbContainer.java:342)
at javax.ejb.embeddable.EJBContainer.createEJBContainer(EJBContainer.java:56)
at com.github.rzo1.DemoMain.run(DemoMain.java:90)
at java.lang.Thread.run(Unknown Source)
INFORMATION - Closing DataSource: demoDS
INFORMATION - Closing DataSource: demoDSNonJTA
Exception in thread "Thread-0" java.lang.RuntimeException: org.apache.openejb.OpenEjbContainer$AssembleApplicationException: javax.enterprise.inject.spi.DeploymentException: couldn't start owb context
at com.github.rzo1.DemoMain.run(DemoMain.java:116)
at java.lang.Thread.run(Unknown Source)
Caused by: org.apache.openejb.OpenEjbContainer$AssembleApplicationException: javax.enterprise.inject.spi.DeploymentException: couldn't start owb context
at org.apache.openejb.OpenEjbContainer$Provider.createEJBContainer(OpenEjbContainer.java:346)
at javax.ejb.embeddable.EJBContainer.createEJBContainer(EJBContainer.java:56)
at com.github.rzo1.DemoMain.run(DemoMain.java:90)
... 1 more
Caused by: javax.enterprise.inject.spi.DeploymentException: couldn't start owb context
at org.apache.openejb.cdi.ThreadSingletonServiceImpl.initialize(ThreadSingletonServiceImpl.java:191)
at org.apache.openejb.cdi.CdiBuilder.build(CdiBuilder.java:41)
at org.apache.openejb.assembler.classic.Assembler.createApplication(Assembler.java:913)
at org.apache.openejb.assembler.classic.Assembler.createApplication(Assembler.java:717)
at org.apache.openejb.OpenEjbContainer$Provider.createEJBContainer(OpenEjbContainer.java:342)
... 3 more
Caused by: org.apache.openejb.OpenEJBRuntimeException: java.lang.NullPointerException
at org.apache.openejb.cdi.OpenEJBLifecycle.startApplication(OpenEJBLifecycle.java:200)
at org.apache.openejb.cdi.ThreadSingletonServiceImpl.initialize(ThreadSingletonServiceImpl.java:189)
... 7 more
Caused by: java.lang.NullPointerException
at org.apache.openejb.cdi.CdiScanner.handleBda(CdiScanner.java:271)
at org.apache.openejb.cdi.CdiScanner.init(CdiScanner.java:148)
at org.apache.openejb.cdi.OpenEJBLifecycle.startApplication(OpenEJBLifecycle.java:179)
... 8 more
I added a branch with this changes on the GitHub Project for further investigation.
UPDATE 2
I excluded javax.xml.* from the shade:
<excludes>
<exclude>META-INF/faces-config.xml</exclude>
<exclude>META-INF/*.SF</exclude>
<exclude>META-INF/*.DSA</exclude>
<exclude>META-INF/*.RSA</exclude>
<exclude>javax/xml/**</exclude>
</excludes>
However, the exception remains the same as in Update 1. I pushed a related branch to the GitHub repository.
So my question is:
With the help of the other answers , I was finally able to find a working solution for building a standalone fat jar, which is working for my use-case.
UPDATE 3:
The steps (for now) are:
Usage of OpenWebBeansPropertiesTransformer instead AppendingTransformer as stated by P. Merkle
Exclude java.xml.* in the shade as stated by Romain Manni-Bucau:
<excludes>
<exclude>META-INF/faces-config.xml</exclude>
<exclude>META-INF/*.SF</exclude>
<exclude>META-INF/*.DSA</exclude>
<exclude>META-INF/*.RSA</exclude>
<exclude>javax/xml/**</exclude>
Add a scan.xml in META-INF including only packages / classes, which should be scanned. Current working version can be found here
Question:
704
http://tomee.apache.org/advanced/shading/index.html and maybe http://tomee.apache.org/advanced/applicationcomposer/index.html are also good starting points.
Now it seems you scan unexpected classes like xml one where the classloader is null. Likely exclude javax.xml.* from scanning or even the shade and it will work
144
The exception is caused by merging multiple openwebbeans.properties files from different modules into a single properties file via AppendingTransformer.
This is because openwebbeans.properties files are structured in a special way:
All those files contain a single property configuration.ordinal which defines their 'importance'. Any setting from a property file with a higher configuration.ordinal will overwrite settings from one with a lower configuration.ordinal.
Now, if you naively merge these files--as AppendingTransformer does-- , you will end up with multiple competing ordinal properties in the same file.
The solution is to replace AppendingTransformer with OpenWebBeansPropertiesTransformer, which preserves priorities while merging.
An example pom.xml is available here: http://openwebbeans.apache.org/meecrowave/meecrowave-maven/index.html
Bad news is, however, that this solution uncovers another exception:
java.lang.NullPointerException at org.apache.openejb.cdi.CdiScanner.handleBda(CdiScanner.java:271)
So far I've not been able to identify the cause of that.
34
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