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/*******************************************************************************
* Copyright (c) 2009, 2017 Cloudsmith Inc 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:
* Cloudsmith Inc - initial API and implementation
* IBM Corporation - ongoing development
* Genuitec - Bug 291926
* Red Hat Inc. - Bug 460967
******************************************************************************/
package org.eclipse.equinox.internal.p2.transport.ecf;
import org.eclipse.ecf.filetransfer.service.IRetrieveFileTransferFactory;
import org.eclipse.ecf.provider.filetransfer.IFileTransferProtocolToFactoryMapper;
import org.eclipse.equinox.internal.p2.core.helpers.ServiceHelper;
import org.osgi.framework.*;
import org.osgi.service.packageadmin.PackageAdmin;
import org.osgi.util.tracker.ServiceTracker;
/**
* The activator class controls the plug-in life cycle. This activator has
* helper methods to get file transfer service tracker, and for making sure
* required ECF bundles are started.
*/
@SuppressWarnings("restriction")
public class Activator implements BundleActivator {
public static final String ID = "org.eclipse.equinox.p2.transport.ecf"; //$NON-NLS-1$
private static final String HTTP = "http"; //$NON-NLS-1$
private static final String HTTPS = "https"; //$NON-NLS-1$
private static BundleContext context;
// tracker for ECF service
private ServiceTracker<IRetrieveFileTransferFactory, IRetrieveFileTransferFactory> retrievalFactoryTracker;
// tracker for protocolToFactoryMapperTracker
private ServiceTracker<IFileTransferProtocolToFactoryMapper, IFileTransferProtocolToFactoryMapper> protocolToFactoryMapperTracker = null;
// The shared instance
private static Activator plugin;
@Override
public void start(BundleContext aContext) throws Exception {
Activator.context = aContext;
Activator.plugin = this;
}
@Override
public void stop(BundleContext aContext) throws Exception {
Activator.context = null;
Activator.plugin = null;
if (retrievalFactoryTracker != null) {
retrievalFactoryTracker.close();
retrievalFactoryTracker = null;
}
if (protocolToFactoryMapperTracker != null) {
protocolToFactoryMapperTracker.close();
protocolToFactoryMapperTracker = null;
}
}
/**
* Get singleton instance.
*
* @return the shared instance
*/
public static Activator getDefault() {
return plugin;
}
/**
* Returns a {@link IRetrieveFileTransferFactory} using a {@link ServiceTracker}
* after having attempted to start the bundle
* "org.eclipse.ecf.provider.filetransfer". If something is wrong with the
* configuration this method returns null.
*
* @return a factory, or null, if configuration is incorrect
*/
public IRetrieveFileTransferFactory getRetrieveFileTransferFactory() {
return getFileTransferServiceTracker().getService();
}
public synchronized void useJREHttpClient() {
IFileTransferProtocolToFactoryMapper mapper = getProtocolToFactoryMapper();
if (mapper != null) {
// remove http
// Remove browse provider
String providerId = mapper.getBrowseFileTransferFactoryId(HTTP);
if (providerId != null) {
mapper.removeBrowseFileTransferFactory(providerId);
}
// Remove retrieve provider
providerId = mapper.getRetrieveFileTransferFactoryId(HTTP);
if (providerId != null) {
mapper.removeRetrieveFileTransferFactory(providerId);
}
// Remove send provider
providerId = mapper.getSendFileTransferFactoryId(HTTP);
if (providerId != null) {
mapper.removeSendFileTransferFactory(providerId);
}
// remove https
// Remove browse provider
providerId = mapper.getBrowseFileTransferFactoryId(HTTPS);
if (providerId != null) {
mapper.removeBrowseFileTransferFactory(providerId);
}
// Remove retrieve provider
providerId = mapper.getRetrieveFileTransferFactoryId(HTTPS);
if (providerId != null) {
mapper.removeRetrieveFileTransferFactory(providerId);
}
// Remove send provider
providerId = mapper.getSendFileTransferFactoryId(HTTPS);
if (providerId != null) {
mapper.removeSendFileTransferFactory(providerId);
}
}
}
/**
* Gets the singleton ServiceTracker for the IRetrieveFileTransferFactory and
* starts the bundles "org.eclipse.ecf" and
* "org.eclipse.ecf.provider.filetransfer" on first call.
*
* @return ServiceTracker
*/
private synchronized ServiceTracker<IRetrieveFileTransferFactory, IRetrieveFileTransferFactory> getFileTransferServiceTracker() {
if (retrievalFactoryTracker == null) {
retrievalFactoryTracker = new ServiceTracker<>(Activator.context, IRetrieveFileTransferFactory.class, null);
retrievalFactoryTracker.open();
startBundle("org.eclipse.ecf"); //$NON-NLS-1$
startBundle("org.eclipse.ecf.provider.filetransfer"); //$NON-NLS-1$
}
return retrievalFactoryTracker;
}
private IFileTransferProtocolToFactoryMapper getProtocolToFactoryMapper() {
if (protocolToFactoryMapperTracker == null) {
protocolToFactoryMapperTracker = new ServiceTracker<>(context, IFileTransferProtocolToFactoryMapper.class,
null);
protocolToFactoryMapperTracker.open();
}
return protocolToFactoryMapperTracker.getService();
}
private boolean startBundle(String bundleId) {
PackageAdmin packageAdmin = ServiceHelper.getService(Activator.context, PackageAdmin.class);
if (packageAdmin == null)
return false;
Bundle[] bundles = packageAdmin.getBundles(bundleId, null);
if (bundles != null && bundles.length > 0) {
for (Bundle bundle : bundles) {
try {
if ((bundle.getState() & Bundle.INSTALLED) == 0) {
bundle.start(Bundle.START_ACTIVATION_POLICY);
bundle.start(Bundle.START_TRANSIENT);
return true;
}
} catch (BundleException e) {
// failed, try next bundle
}
}
}
return false;
}
}
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