I am trying to test groovy scripting from withing my first new bundle
deployed under Felix.
I installed successfully the groovy-all.jar as a bundle via the GOGO shell
console:
g! lb
START LEVEL 1
ID|State |Level|Name
.....
* 33|Active | 1|Groovy Runtime (2.1.6)*
Than i created a simple bundle ( just an Activator) whose main testing
purpose is to list the bundles that embed a ScriptEngineFactory
implementation and display few information about them ( symbolic name,
version and last modification time/date). *Than at the end fetch the grovvy
script engine and test a simple groovy script.*
My Bundle works fine till it reaches the groovy fetching part where it fails
to find the groovy script engine and obviously fails to evaluate the simple
groovy command:
g! install
file:/C:/myProjects/MyOSGIBundles/target/myBundle-1.0.1-SNAPSHOT.jar
Bundle ID: 44
g! start 44
Starting bundle MyBundle
i found 23 bundles
Here is an other scriptengines i found groovy-all version 2.1.6 last
modified Sat Nov 22 09:02:35 CET 47721
Here is an other scriptengines i found org.jruby.jruby version 1.7.4 last
modified Sun Nov 23 06:04:10 CET 47721
*groovy not found Sorry!*
g!
Here is the Bundle only class, its Activator:
package com.king.osgi.samples.myBundle;
import org.osgi.framework.Bundle;
import org.osgi.framework.BundleActivator;
import org.osgi.framework.BundleContext;
import org.osgi.framework.BundleEvent;
import org.osgi.framework.ServiceEvent;
import org.osgi.framework.ServiceListener;
import org.osgi.util.tracker.BundleTrackerCustomizer;
import java.util.Calendar;
import javax.script.ScriptEngineManager;
import javax.script.*;
@SuppressWarnings("restriction")
public class Activator implements BundleActivator, ServiceListener,
BundleTrackerCustomizer {
@SuppressWarnings("restriction")
private static final String ENGINE_FACTORY_SERVICE =
"META-INF/services/" +
ScriptEngineFactory.class.getName();
private ScriptEngineManager scriptEngineManager;
@SuppressWarnings("restriction")
public void start(BundleContext context) throws Exception {
// TODO Auto-generated method stub
System.out.println("Starting bundle: MyBundle");
// rfetching available actibe bundle that embed a
ScriptEngineFactory
Bundle[] bundles = context.getBundles();
System.out.println(" i found " + bundles.length + " bundles");
for (Bundle bundle : bundles) {
if (bundle.getState() == Bundle.ACTIVE &&
bundle.getEntry(ENGINE_FACTORY_SERVICE) != null) {
long modified = bundle.getLastModified();
Calendar cal = Calendar.getInstance();
cal.setTimeInMillis(modified * 1000);
System.out.println(" Here is an other
scriptengine i found " +
bundle.getSymbolicName() + " version "
+ bundle.getVersion() + " last
modified " + cal.getTime());
}
}
// test some groovy script here
String engineNameOrExtension = "groovy";
ScriptEngineManager mgr = new ScriptEngineManager(); // also
tried with
new ScriptEngineManager(Thread.currentThread().getContextClassLoader());
ScriptEngine engine =
mgr.getEngineByExtension(engineNameOrExtension);
//engine = mgr.getEngineByName(engineNameOrExtension); tried
with engine
name too but no success!
if ( engine != null){
System.out.println(engine.eval("(1..10).sum()"));
}else{
System.out.println(engineNameOrExtension +" not found Sorry!"
);
}
// test some jruby or anything else here
}
public void stop(BundleContext context) throws Exception {
// TODO Auto-generated method stub
System.out.println("Stopping bundle MyBundle");
}
public void serviceChanged(ServiceEvent event) {
// TODO Auto-generated method stub
System.out.println("Service is changing...");
}
public Object addingBundle(Bundle bundle, BundleEvent event) {
// TODO Auto-generated method stub
return null;
}
public void modifiedBundle(Bundle bundle, BundleEvent event, Object
object)
{
// TODO Auto-generated method stub
System.out.println("Service is modified...");
}
public void removedBundle(Bundle bundle, BundleEvent event, Object
object)
{
// TODO Auto-generated method stub
System.out.println("Service is removed ...");
}
}
Here is also the pom.xml file ( just in case):
<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/maven-v4_0_0.xsd";>
<modelVersion>4.0.0</modelVersion>
<groupId>com.king.osgi.samples</groupId>
<artifactId>myBundle</artifactId>
<packaging>bundle</packaging>
<version>1.0.1-SNAPSHOT</version>
<name>King's first OSGI bundle under Felix</name>
<description>King's first OSGI bundle under Felix</description>
<properties>
</properties>
<build>
<plugins>
<plugin>
<groupId>org.apache.felix</groupId>
<artifactId>maven-bundle-plugin</artifactId>
<version>2.5.3</version>
<extensions>true</extensions>
<configuration>
<instructions>
<Bundle-Category>osgi</Bundle-Category>
<Bundle-SymbolicName>${project.artifactId}</Bundle-SymbolicName>
<Import-Package>com.king.osgi.samples.myBundle.*,org.osgi.framework.* ,
org.osgi.util.* , javax.script.*</Import-Package>
<Bundle-Activator>com.king.osgi.samples.myBundle.Activator</Bundle-Activator>
</instructions>
</configuration>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>org.osgi</groupId>
<artifactId>org.osgi.core</artifactId>
<version>4.2.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.osgi</groupId>
<artifactId>org.osgi.compendium</artifactId>
<version>4.2.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.4</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>1.4</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.apache.felix</groupId>
<artifactId>org.apache.felix.webconsole</artifactId>
<version>3.1.8</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.json</groupId>
<artifactId>json</artifactId>
<version>20070829</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.2.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<scope>test</scope>
<version>4.10</version>
</dependency>
<dependency>
<groupId>javax.inject</groupId>
<artifactId>javax.inject</artifactId>
<version>1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-simple</artifactId>
<version>1.6.0</version>
<scope>test</scope>
</dependency>
</dependencies>
</project>
Is this a classloading issue? if yes how can i fix this? If not can anyone
please point to the mistake i did ?
Regards,
King
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