| /******************************************************************************* |
| * Copyright (c) 2008, 2013 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| |
| package org.eclipse.equinox.internal.transforms; |
| |
| import org.eclipse.osgi.internal.framework.EquinoxContainer; |
| import org.eclipse.osgi.internal.hookregistry.*; |
| import org.eclipse.osgi.internal.log.EquinoxLogServices; |
| import org.eclipse.osgi.storage.BundleInfo.Generation; |
| import org.eclipse.osgi.storage.bundlefile.BundleFile; |
| import org.eclipse.osgi.storage.bundlefile.BundleFileWrapper; |
| import org.osgi.framework.*; |
| |
| /** |
| * The framework extension that is capable of applying transforms to bundle content. |
| */ |
| public class TransformerHook implements BundleFileWrapperFactoryHook, HookConfigurator, ActivatorHookFactory, BundleActivator { |
| private volatile TransformerList transformers; |
| private volatile TransformInstanceListData templates; |
| private EquinoxLogServices logServices; |
| |
| public BundleFileWrapper wrapBundleFile(BundleFile bundleFile, Generation generation, boolean base) { |
| if (transformers == null || templates == null) |
| return null; |
| return new TransformedBundleFile(this, generation, bundleFile); |
| } |
| |
| public void addHooks(HookRegistry hookRegistry) { |
| hookRegistry.addActivatorHookFactory(this); |
| hookRegistry.addBundleFileWrapperFactoryHook(this); |
| logServices = hookRegistry.getContainer().getLogServices(); |
| } |
| |
| public void start(BundleContext context) throws BundleException { |
| try { |
| this.transformers = new TransformerList(context, logServices); |
| } catch (InvalidSyntaxException e) { |
| throw new BundleException("Problem registering service tracker: transformers", e); //$NON-NLS-1$ |
| } |
| try { |
| this.templates = new TransformInstanceListData(context, logServices); |
| } catch (InvalidSyntaxException e) { |
| transformers.close(); |
| transformers = null; |
| throw new BundleException("Problem registering service tracker: templates", e); //$NON-NLS-1$ |
| } |
| |
| } |
| |
| public void stop(BundleContext context) { |
| transformers.close(); |
| templates.close(); |
| } |
| |
| void log(int severity, String msg, Throwable t) { |
| if (logServices == null) { |
| System.err.println(msg); |
| t.printStackTrace(); |
| return; |
| } |
| logServices.log(EquinoxContainer.NAME, severity, msg, t); |
| } |
| |
| public BundleActivator createActivator() { |
| return this; |
| } |
| |
| public String[] getTransformTypes() { |
| TransformInstanceListData current = templates; |
| return current == null ? new String[0] : current.getTransformTypes(); |
| } |
| |
| public StreamTransformer getTransformer(String type) { |
| TransformerList current = transformers; |
| return current == null ? null : current.getTransformer(type); |
| } |
| |
| public TransformTuple[] getTransformsFor(String type) { |
| TransformInstanceListData current = templates; |
| return current == null ? null : current.getTransformsFor(type); |
| } |
| |
| public boolean hasTransformers() { |
| TransformerList current = transformers; |
| return current == null ? false : current.hasTransformers(); |
| } |
| |
| public boolean hasTransformsFor(Bundle bundle) { |
| TransformInstanceListData current = templates; |
| return current == null ? false : current.hasTransformsFor(bundle); |
| } |
| } |