Hi guys,
Thanks for the replies.
At this stage my head still has a couple of hairs left to pull out
:confused:.
My test implementation goes something like this - sorry for the long
explanation, I really tried to make it short :-D
1. I am using eclipse 3.7 with bndtools.
2. My workspace includes 4 OSGI enabled projects:
a. cnf
b. org.me.osgi.app1 (starts org.me.osgi.app1.plugincontainer,
org.me.osgi.app1.spi.service, org.me.osgi.app1)
c. org.me.osgi.app1.spi.service (defines an interface 'ServiceProvider'
as is exported)
d. org.me.osgi.app1.plugincontainer (launches a new osgi framework and
installs,starts bunbles found in a pre-defined dir)
3. The org.me.osgi.app1.plugincontainer package defines a BundleActivator
which is responsable for launching the new osgi framework
public final class FrameworkActivator implements BundleActivator {
private FrameworkFactory frameworkFactory;
private Framework framework;
@Override
public void start(BundleContext context) throws Exception {
Map<String,String> config = new HashMap<String, String>();
config.put(Constants.FRAMEWORK_EXECUTIONENVIRONMENT, "JavaSE-1.6");
config.put(Constants.FRAMEWORK_STORAGE_CLEAN,
Constants.FRAMEWORK_STORAGE_CLEAN_ONFIRSTINIT);
config.put(Constants.FRAMEWORK_STORAGE,
"/home/me/tests/osgi/cache");
config.put(Constants.FRAMEWORK_SYSTEMPACKAGES_EXTRA,
"org.me.osgi.app1.spi.service");
config.put(Constants.FRAMEWORK_BUNDLE_PARENT,
Constants.FRAMEWORK_BUNDLE_PARENT_EXT);
frameworkFactory =
ServiceLoader.load(FrameworkFactory.class).iterator().next();
framework = frameworkFactory.newFramework(config);
framework.init();
framework.start();
File deployDirectory = new File("/home/me/tests/osgi/deploy");
File[] jars = deployDirectory.listFiles(new FileFilter() {
@Override
public boolean accept(File file) {
if(null != file && file.exists() && file.isFile() &&
file.getName().endsWith(".jar")) {
return true;
}
return false;
}
});
List<Bundle> installedBundles = new LinkedList<Bundle>();
for(File jar: jars) {
installedBundles.add(framework.getBundleContext().installBundle("file:" +
jar.getAbsolutePath()));
}
for (Bundle bundle : installedBundles) {
if (bundle.getHeaders().get(Constants.FRAGMENT_HOST) == null) {
bundle.start();
}
}
}
@Override
public void stop(BundleContext context) throws Exception {
framework.stop();
framework.waitForStop(0);
}
}
4. The /home/me/tests/osgi/deploy directory contains the following bundles:
osgi.cmpn-4.2.1.jar
org.apache.felix.scr-1.4.0.jar
org.apache.felix.shell-1.4.2.jar
org.apache.felix.shell.tui-1.4.1.jar
org.me.osgi.app1.plugincontainer.extension-1.0.0.jar
org.me.osgi.app1.plugins.greetingservice-1.0.0.jar
5 The MANIFEST.MF for fragment bundle
org.me.osgi.app1.plugincontainer.extension-1.0.0.jar contains the following
headers
Manifest-Version: 1.0
Bundle-ManifestVersion: 2
Bundle-Name: org.me.osgi.app1.plugincontainer.extension
Bundle-SymbolicName: org.me.osgi.app1.plugincontainer.extension
Bundle-Version: 1.0.0
Bundle-RequiredExecutionEnvironment: JavaSE-1.6
Fragment-Host: system.bundle; extension:=framework
Export-Package: org.me.osgi.app1.spi.service;version="1.0.0"
6. Launching the outer framework (via eclipse) I get the following error:
Failed to start bundle org.me.osgi.app1.plugincontainer-1.0.0, exception
Activator start error in bundle org.me.osgi.app1.plugins.greetingservice
[6].
7. -> ps (inner framework)
START LEVEL 1
ID State Level Name
[ 0] [Active ] [ 0] System Bundle (3.0.4)
[ 1] [Active ] [ 1] Apache Felix Declarative Services (1.4.0)
[ 2] [Active ] [ 1] Apache Felix Shell Service (1.4.2)
[ 3] [Active ] [ 1] Apache Felix Shell TUI (1.4.1)
[ 4] [Active ] [ 1] osgi.cmpn (4.2.1.201001051203)
[ 5] [Resolved ] [ 1] org.me.osgi.app1.plugincontainer.extension
(1.0.0)
[ 6] [Resolved ] [ 1] org.me.osgi.app1.plugins.greetingservice
(1.0.0)
8. -> start 6
org.osgi.framework.BundleException: Activator start error in bundle
org.me.osgi.app1.plugins.greetingservice [6].
at org.apache.felix.framework.Felix.activateBundle(Felix.java:1869)
at org.apache.felix.framework.Felix.startBundle(Felix.java:1739)
at org.apache.felix.framework.BundleImpl.start(BundleImpl.java:922)
at
org.apache.felix.shell.impl.StartCommandImpl.execute(StartCommandImpl.java:114)
at
org.apache.felix.shell.impl.Activator$ShellServiceImpl.executeCommand(Activator.java:286)
at
org.apache.felix.shell.tui.Activator$ShellTuiRunnable.run(Activator.java:184)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.NoClassDefFoundError:
org/me/osgi/app1/spi/service/ServiceProvider
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(Unknown Source)
at java.lang.ClassLoader.defineClass(Unknown Source)
at
org.apache.felix.framework.ModuleImpl$ModuleClassLoader.findClass(ModuleImpl.java:1872)
at
org.apache.felix.framework.ModuleImpl.findClassOrResourceByDelegation(ModuleImpl.java:720)
at org.apache.felix.framework.ModuleImpl.access$300(ModuleImpl.java:73)
at
org.apache.felix.framework.ModuleImpl$ModuleClassLoader.loadClass(ModuleImpl.java:1733)
at java.lang.ClassLoader.loadClass(Unknown Source)
at
org.apache.felix.framework.ModuleImpl.getClassByDelegation(ModuleImpl.java:638)
at
org.apache.felix.framework.Felix.createBundleActivator(Felix.java:3660)
at org.apache.felix.framework.Felix.activateBundle(Felix.java:1817)
... 6 more
Caused by: java.lang.ClassNotFoundException:
org.me.osgi.app1.spi.service.ServiceProvider
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at
org.apache.felix.framework.ExtensionManager$ExtensionManagerModule.getClassByDelegation(ExtensionManager.java:692)
at
org.apache.felix.framework.resolver.WireImpl.getClass(WireImpl.java:99)
at
org.apache.felix.framework.ModuleImpl.searchImports(ModuleImpl.java:1370)
at
org.apache.felix.framework.ModuleImpl.findClassOrResourceByDelegation(ModuleImpl.java:715)
at org.apache.felix.framework.ModuleImpl.access$300(ModuleImpl.java:73)
at
org.apache.felix.framework.ModuleImpl$ModuleClassLoader.loadClass(ModuleImpl.java:1733)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 17 more
java.lang.NoClassDefFoundError: org/me/osgi/app1/spi/service/ServiceProvider
I have tried other things, but this is how I understand it to be, of which
I'm definitely missing something in my understanding of things.
Thanks Again
Jorge
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