implements extender example

Signed-off-by: Juergen Albert <j.albert@data-in-motion.biz>

org.gecko.playground.extender.example/.classpath

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-17">
+		<attributes>
+			<attribute name="module" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="con" path="aQute.bnd.classpath.container"/>
+	<classpathentry kind="src" output="bin" path="src"/>
+	<classpathentry kind="output" path="bin"/>
+</classpath>

org.gecko.playground.extender.example/.project

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>org.gecko.playground.extender.example</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>bndtools.core.bndbuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+		<nature>bndtools.core.bndnature</nature>
+	</natures>
+</projectDescription>

org.gecko.playground.extender.example/.settings/org.eclipse.core.resources.prefs

@@ -0,0 +1,3 @@
+eclipse.preferences.version=1
+encoding/<project>=UTF-8
+encoding/bnd.bnd=UTF-8

org.gecko.playground.extender.example/.settings/org.eclipse.jdt.core.prefs

@@ -0,0 +1,14 @@
+eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=17
+org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
+org.eclipse.jdt.core.compiler.compliance=17
+org.eclipse.jdt.core.compiler.debug.lineNumber=generate
+org.eclipse.jdt.core.compiler.debug.localVariable=generate
+org.eclipse.jdt.core.compiler.debug.sourceFile=generate
+org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
+org.eclipse.jdt.core.compiler.problem.enablePreviewFeatures=disabled
+org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
+org.eclipse.jdt.core.compiler.problem.reportPreviewFeatures=warning
+org.eclipse.jdt.core.compiler.release=enabled
+org.eclipse.jdt.core.compiler.source=17

org.gecko.playground.extender.example/bnd.bnd

@@ -0,0 +1 @@
+-buildpath: org.gecko.playground

org.gecko.playground.extender.example/src/org/gecko/playground/extender/example/StupidDSComponent.java

@@ -0,0 +1,54 @@
+/**
+ * Copyright (c) 2012 - 2024 Data In Motion and others.
+ * All rights reserved. 
+ * 
+ * This program and the accompanying materials are made
+ * available under the terms of the Eclipse Public License 2.0
+ * which is available at https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ * 
+ * Contributors:
+ *     Data In Motion - initial API and implementation
+ */
+package org.gecko.playground.extender.example;
+
+import org.osgi.annotation.bundle.Header;
+import org.gecko.playground.log.Log;
+
+/**
+ * 
+ * @author Juergen Albert
+ * @since 15 Jan 2024
+ */
+@Header(name = "Stupid-DS-Class", value = "org.gecko.playground.extender.example.StupidDSComponent;test=blub")
+public class StupidDSComponent implements Log{
+
+	/**
+	 * Creates a new instance.
+	 */
+	public StupidDSComponent() {
+		System.out.println("Hello World");
+	}
+
+	/* 
+	 * (non-Javadoc)
+	 * @see org.gecko.playground.log.Log#logMessage(java.lang.String)
+	 */
+	@Override
+	public void logMessage(String message) {
+		// TODO Auto-generated method stub
+
+	}
+
+	/* 
+	 * (non-Javadoc)
+	 * @see org.gecko.playground.log.Log#info(java.lang.String)
+	 */
+	@Override
+	public String info(String message) {
+		// TODO Auto-generated method stub
+		return null;
+	}
+
+}

org.gecko.playground.extender/.classpath

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-17">
+		<attributes>
+			<attribute name="module" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="con" path="aQute.bnd.classpath.container"/>
+	<classpathentry kind="src" output="bin" path="src"/>
+	<classpathentry kind="output" path="bin"/>
+</classpath>

org.gecko.playground.extender/.project

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>org.gecko.playground.extender</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>bndtools.core.bndbuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+		<nature>bndtools.core.bndnature</nature>
+	</natures>
+</projectDescription>

org.gecko.playground.extender/.settings/org.eclipse.core.resources.prefs

@@ -0,0 +1,3 @@
+eclipse.preferences.version=1
+encoding/<project>=UTF-8
+encoding/bnd.bnd=UTF-8

org.gecko.playground.extender/.settings/org.eclipse.jdt.core.prefs

@@ -0,0 +1,14 @@
+eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=17
+org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
+org.eclipse.jdt.core.compiler.compliance=17
+org.eclipse.jdt.core.compiler.debug.lineNumber=generate
+org.eclipse.jdt.core.compiler.debug.localVariable=generate
+org.eclipse.jdt.core.compiler.debug.sourceFile=generate
+org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
+org.eclipse.jdt.core.compiler.problem.enablePreviewFeatures=disabled
+org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
+org.eclipse.jdt.core.compiler.problem.reportPreviewFeatures=warning
+org.eclipse.jdt.core.compiler.release=enabled
+org.eclipse.jdt.core.compiler.source=17

org.gecko.playground.extender/bnd.bnd

@@ -0,0 +1,3 @@
+-buildpath: \
+	org.osgi.framework,\
+	org.osgi.util.tracker

org.gecko.playground.extender/hello-component.bndrun

@@ -0,0 +1,14 @@
+-runfw: org.apache.felix.framework;version='[7.0.5,7.0.5]'
+-runee: JavaSE-17
+-runrequires: \
+	bnd.identity;id='org.apache.felix.gogo.command',\
+	bnd.identity;id='org.apache.felix.gogo.shell',\
+	bnd.identity;id='org.gecko.playground.extender',\
+	bnd.identity;id='org.gecko.playground.extender.example'
+-runbundles: \
+	org.apache.felix.gogo.command;version='[1.1.2,1.1.3)',\
+	org.apache.felix.gogo.runtime;version='[1.1.6,1.1.7)',\
+	org.apache.felix.gogo.shell;version='[1.1.4,1.1.5)',\
+	org.gecko.playground.extender;version=snapshot,\
+	org.gecko.playground.extender.example;version=snapshot,\
+	org.gecko.playground;version=snapshot

org.gecko.playground.extender/src/org/gecko/playground/extender/activator/Activator.java

@@ -0,0 +1,144 @@
+/**
+ * Copyright (c) 2012 - 2024 Data In Motion and others.
+ * All rights reserved. 
+ * 
+ * This program and the accompanying materials are made
+ * available under the terms of the Eclipse Public License 2.0
+ * which is available at https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ * 
+ * Contributors:
+ *     Data In Motion - initial API and implementation
+ */
+package org.gecko.playground.extender.activator;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.InvocationTargetException;
+import java.util.Arrays;
+import java.util.Dictionary;
+import java.util.Hashtable;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.stream.Collectors;
+
+import org.osgi.annotation.bundle.Header;
+import org.osgi.framework.Bundle;
+import org.osgi.framework.BundleActivator;
+import org.osgi.framework.BundleContext;
+import org.osgi.framework.BundleEvent;
+import org.osgi.framework.ServiceRegistration;
+import org.osgi.framework.wiring.BundleWiring;
+import org.osgi.util.tracker.BundleTracker;
+import org.osgi.util.tracker.BundleTrackerCustomizer;
+
+@Header(name = "Bundle-Activator", value = "org.gecko.playground.extender.activator.Activator")
+public class Activator implements BundleActivator {
+
+	final Map<Bundle, ServiceRegistration<?>> registrations = new ConcurrentHashMap<>();
+
+
+	private BundleTracker tracker;
+
+	/* 
+	 * (non-Javadoc)
+	 * @see org.osgi.framework.BundleActivator#start(org.osgi.framework.BundleContext)
+	 */
+	@Override
+	public void start(BundleContext context) throws Exception {
+		System.out.println("Activating Stupid Component Service Runtime");
+		tracker = new BundleTracker<>(context, Bundle.ACTIVE|Bundle.STARTING|Bundle.STOPPING, new BundleTrackerCustomizer<Bundle>() {
+
+
+			@Override
+			public Bundle addingBundle(Bundle bundle, BundleEvent event) {
+				String instruction = bundle.getHeaders().get("Stupid-DS-Class");
+				if(instruction != null) { 
+					System.out.println("Header " + instruction);
+					String[] split = instruction.split(";");
+					String clazzName = split[0];
+					Dictionary<String, String> properties = new Hashtable<>();
+					if(split.length > 1) {
+						for(int i = 1; i < split.length; i++) {
+							String prop = split[i];
+							String[] strings = prop.split("=");
+							if(strings.length == 2) {
+								properties.put(strings[0], strings[1]);
+							} else {
+								System.err.println("Property " + prop + " is unparsable");
+							}
+
+						}
+					}
+
+					BundleWiring adapt = bundle.adapt(BundleWiring.class);
+					try {
+						Class<?> clazz = adapt.getClassLoader().loadClass(clazzName);
+						Constructor<?> constructor = clazz.getConstructor();
+						Object newInstance = constructor.newInstance(null);
+						Class<?>[] interfaces = clazz.getInterfaces();
+						String[] services = new String[] {clazzName};
+						if(interfaces.length > 0) {
+							List<String> list = Arrays.asList(interfaces).stream().map(Class::getName).collect(Collectors.toList());
+							services = list.toArray(new String[interfaces.length]);
+						}
+						ServiceRegistration<?> registerService = bundle.getBundleContext().registerService(services, newInstance, properties);
+						registrations.put(bundle, registerService);
+					} catch (ClassNotFoundException e) {
+						System.err.println(instruction + " not found in " + bundle.getSymbolicName());
+					} catch (NoSuchMethodException e) {
+						System.err.println(instruction + " does not have a no Args constructor");
+					} catch (SecurityException e) {
+						// TODO Auto-generated catch block
+						e.printStackTrace();
+					} catch (InstantiationException e) {
+						// TODO Auto-generated catch block
+						e.printStackTrace();
+					} catch (IllegalAccessException e) {
+						// TODO Auto-generated catch block
+						e.printStackTrace();
+					} catch (IllegalArgumentException e) {
+						// TODO Auto-generated catch block
+						e.printStackTrace();
+					} catch (InvocationTargetException e) {
+						// TODO Auto-generated catch block
+						e.printStackTrace();
+					}
+
+
+					return bundle;
+				}
+				return null;
+			}
+
+			@Override
+			public void modifiedBundle(Bundle bundle, BundleEvent event, Bundle object) {
+				// TODO Auto-generated method stub
+
+			}
+
+			@Override
+			public void removedBundle(Bundle bundle, BundleEvent event, Bundle object) {
+				ServiceRegistration<?> registration = registrations.remove(bundle);
+				if(registration != null) {
+					registration.unregister();
+				}
+			}
+		});
+
+		tracker.open();
+	}
+
+	/* 
+	 * (non-Javadoc)
+	 * @see org.osgi.framework.BundleActivator#stop(org.osgi.framework.BundleContext)
+	 */
+	@Override
+	public void stop(BundleContext context) throws Exception {
+		tracker.close();
+		registrations.values().forEach(ServiceRegistration::unregister);
+		registrations.clear();
+	}
+
+}