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/*******************************************************************************
* Copyright (c) 2005, 2011 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.osgi.internal.baseadaptor;
import java.io.*;
import java.net.URL;
import java.net.URLConnection;
import java.util.Dictionary;
import org.eclipse.osgi.baseadaptor.BaseData;
import org.eclipse.osgi.baseadaptor.hooks.StorageHook;
import org.eclipse.osgi.framework.adaptor.BundleData;
import org.eclipse.osgi.framework.adaptor.BundleOperation;
import org.eclipse.osgi.framework.internal.core.ReferenceInputStream;
import org.eclipse.osgi.util.NLS;
import org.osgi.framework.*;
public class BundleUpdate implements BundleOperation {
private BaseData data;
private BaseData newData;
private URLConnection source;
private BaseStorage storage;
public BundleUpdate(BaseData data, URLConnection source, BaseStorage storage) {
this.data = data;
this.source = source;
this.storage = storage;
}
/**
* Perform the change to persistent storage.
*
* @return Bundle object for the target bundle.
* @throws BundleException if an error occurs
*/
public BundleData begin() throws BundleException {
try {
newData = storage.createBaseData(data.getBundleID(), data.getLocation());
newData.setLastModified(System.currentTimeMillis());
newData.setStartLevel(data.getStartLevel());
newData.setStatus(data.getStatus());
// load the storage hooks into the new data
StorageHook[] storageHooks = data.getAdaptor().getHookRegistry().getStorageHooks();
StorageHook[] instanceHooks = new StorageHook[storageHooks.length];
for (int i = 0; i < storageHooks.length; i++) {
instanceHooks[i] = storageHooks[i].create(newData);
instanceHooks[i].copy(data.getStorageHook((String) instanceHooks[i].getKey()));
}
newData.setStorageHooks(instanceHooks);
// get the new eclipse storage hooks
BaseStorageHook newStorageHook = (BaseStorageHook) newData.getStorageHook(BaseStorageHook.KEY);
InputStream in = source.getInputStream();
URL sourceURL = source.getURL();
String protocol = sourceURL == null ? null : sourceURL.getProtocol();
try {
if (in instanceof ReferenceInputStream) {
URL reference = ((ReferenceInputStream) in).getReference();
if (!"file".equals(reference.getProtocol())) //$NON-NLS-1$
throw new BundleException(NLS.bind(AdaptorMsg.ADAPTOR_URL_CREATE_EXCEPTION, reference));
// check to make sure we are not just trying to update to the same
// directory reference. This would be a no-op.
String path = reference.getPath();
newStorageHook.setReference(true);
newStorageHook.setFileName(path);
} else {
File genDir = newStorageHook.createGenerationDir();
if (!genDir.exists())
throw new BundleException(NLS.bind(AdaptorMsg.ADAPTOR_DIRECTORY_CREATE_EXCEPTION, genDir.getPath()));
newStorageHook.setReference(false);
newStorageHook.setFileName(BaseStorage.BUNDLEFILE_NAME);
File outFile = new File(genDir, newStorageHook.getFileName());
if ("file".equals(protocol)) { //$NON-NLS-1$
File inFile = new File(source.getURL().getPath());
if (inFile.isDirectory()) {
AdaptorUtil.copyDir(inFile, outFile);
} else {
AdaptorUtil.readFile(in, outFile);
}
} else {
AdaptorUtil.readFile(in, outFile);
}
}
Dictionary<String, String> manifest = storage.loadManifest(newData, true);
for (int i = 0; i < instanceHooks.length; i++)
instanceHooks[i].initialize(manifest);
} finally {
try {
if (in != null)
in.close();
} catch (IOException ee) {
// nothing to do here
}
}
} catch (IOException e) {
throw new BundleException(AdaptorMsg.BUNDLE_READ_EXCEPTION, BundleException.READ_ERROR, e);
}
return (newData);
}
/**
* Commit the change to persistent storage.
*
* @param postpone If true, the bundle's persistent
* storage cannot be immediately reclaimed.
* @throws BundleException If a failure occured modifiying peristent storage.
*/
public void commit(boolean postpone) throws BundleException {
storage.processExtension(data, BaseStorage.EXTENSION_UNINSTALLED); // remove the old extension
storage.processExtension(newData, BaseStorage.EXTENSION_UPDATED); // update to the new one
newData.setLastModified(System.currentTimeMillis()); // save the last modified
storage.updateState(newData, BundleEvent.UPDATED);
try {
newData.save();
} catch (IOException e) {
throw new BundleException(AdaptorMsg.ADAPTOR_STORAGE_EXCEPTION, e);
}
BaseStorageHook oldStorageHook = (BaseStorageHook) data.getStorageHook(BaseStorageHook.KEY);
try {
oldStorageHook.delete(postpone, BaseStorageHook.DEL_GENERATION);
} catch (IOException e) {
data.getAdaptor().getEventPublisher().publishFrameworkEvent(FrameworkEvent.ERROR, data.getBundle(), e);
}
}
/**
* Undo the change to persistent storage.
*
* @throws BundleException If a failure occured modifiying peristent storage.
*/
public void undo() throws BundleException {
if (newData != null) {
BaseStorageHook newStorageHook = (BaseStorageHook) newData.getStorageHook(BaseStorageHook.KEY);
try {
if (newStorageHook != null)
newStorageHook.delete(false, BaseStorageHook.DEL_GENERATION);
} catch (IOException e) {
data.getAdaptor().getEventPublisher().publishFrameworkEvent(FrameworkEvent.ERROR, data.getBundle(), e);
}
}
}
}
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