| /******************************************************************************* |
| * Copyright (c) 2015, 2017 Rapicorp, 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: |
| * Rapicorp, Inc - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.equinox.internal.p2.metadata.repository; |
| |
| import java.io.*; |
| import java.net.URI; |
| import java.util.Map; |
| import org.eclipse.core.runtime.*; |
| import org.eclipse.equinox.internal.p2.core.helpers.Tracing; |
| import org.eclipse.equinox.internal.p2.repository.CacheManager; |
| import org.eclipse.equinox.p2.core.ProvisionException; |
| import org.eclipse.equinox.p2.repository.IRepositoryManager; |
| import org.eclipse.equinox.p2.repository.metadata.IMetadataRepository; |
| import org.eclipse.equinox.p2.repository.metadata.spi.MetadataRepositoryFactory; |
| import org.eclipse.osgi.util.NLS; |
| import org.tukaani.xz.XZInputStream; |
| |
| public class XZedSimpleMetadataRepositoryFactory extends MetadataRepositoryFactory { |
| private static final String REPOSITORY_FILENAME = "content.xml.xz"; //$NON-NLS-1$ |
| private static final String PROTOCOL_FILE = "file"; //$NON-NLS-1$ |
| |
| @Override |
| public IMetadataRepository create(URI location, String name, String type, Map<String, String> properties) { |
| if (location.getScheme().equals("file")) //$NON-NLS-1$ |
| return new LocalMetadataRepository(getAgent(), location, name, properties); |
| return new URLMetadataRepository(getAgent(), location, name, properties); |
| } |
| |
| /** |
| * Returns a file in the local file system that contains the contents of the |
| * metadata repository at the given location. |
| */ |
| private File getLocalFile(URI location, IProgressMonitor monitor) throws IOException, ProvisionException { |
| File localFile = null; |
| URI xzLocation = URIUtil.append(location, REPOSITORY_FILENAME); |
| // If the repository is local, we can return the repository file directly |
| if (PROTOCOL_FILE.equals(xzLocation.getScheme())) { |
| //look for a compressed local file |
| localFile = URIUtil.toFile(xzLocation); |
| if (localFile.exists()) |
| return localFile; |
| String msg = NLS.bind(Messages.io_failedRead, location); |
| throw new ProvisionException(new Status(IStatus.ERROR, Activator.ID, ProvisionException.REPOSITORY_NOT_FOUND, msg, null)); |
| } |
| // file is not local, create a cache of the repository metadata |
| CacheManager cache = getAgent().getService(CacheManager.class); |
| if (cache == null) |
| throw new IllegalArgumentException("Cache manager service not available"); //$NON-NLS-1$ |
| localFile = cache.createCacheFromFile(URIUtil.append(location, REPOSITORY_FILENAME), monitor); |
| if (localFile == null) { |
| // there is no remote file in either form - this should not really happen as |
| // createCache should bail out with exception if something is wrong. This is an internal |
| // error. |
| throw new ProvisionException(new Status(IStatus.ERROR, Activator.ID, ProvisionException.REPOSITORY_NOT_FOUND, Messages.repoMan_internalError, null)); |
| } |
| return localFile; |
| } |
| |
| @Override |
| public IMetadataRepository load(URI location, int flags, IProgressMonitor monitor) throws ProvisionException { |
| long time = 0; |
| final String debugMsg = "Validating and loading metadata repository "; //$NON-NLS-1$ |
| if (Tracing.DEBUG_METADATA_PARSING) { |
| Tracing.debug(debugMsg + location); |
| time = -System.currentTimeMillis(); |
| } |
| SubMonitor sub = SubMonitor.convert(monitor, 400); |
| try { |
| File localFile = getLocalFile(location, sub.newChild(300)); |
| InputStream stream = new BufferedInputStream(new FileInputStream(localFile)); |
| XZInputStream descriptorStream = new XZInputStream(stream); |
| try { |
| //parse the repository descriptor file |
| sub.setWorkRemaining(100); |
| IMetadataRepository result = new MetadataRepositoryIO(getAgent()).read(localFile.toURL(), descriptorStream, sub.newChild(100)); |
| if (result != null && (flags & IRepositoryManager.REPOSITORY_HINT_MODIFIABLE) > 0 && !result.isModifiable()) |
| return null; |
| if (result instanceof LocalMetadataRepository) |
| ((LocalMetadataRepository) result).initializeAfterLoad(location); |
| if (result instanceof URLMetadataRepository) |
| ((URLMetadataRepository) result).initializeAfterLoad(location); |
| if (Tracing.DEBUG_METADATA_PARSING) { |
| time += System.currentTimeMillis(); |
| Tracing.debug(debugMsg + "time (ms): " + time); //$NON-NLS-1$ |
| } |
| return result; |
| } finally { |
| safeClose(descriptorStream); |
| safeClose(stream); |
| } |
| } catch (FileNotFoundException e) { |
| String msg = NLS.bind(Messages.io_failedRead, location); |
| throw new ProvisionException(new Status(IStatus.ERROR, Activator.ID, ProvisionException.REPOSITORY_NOT_FOUND, msg, e)); |
| } catch (IOException e) { |
| String msg = NLS.bind(Messages.io_failedRead, location); |
| throw new ProvisionException(new Status(IStatus.ERROR, Activator.ID, ProvisionException.REPOSITORY_FAILED_READ, msg, e)); |
| } finally { |
| if (monitor != null) |
| monitor.done(); |
| } |
| } |
| |
| /** |
| * Closes a stream, ignoring any secondary exceptions |
| */ |
| private void safeClose(InputStream stream) { |
| if (stream == null) |
| return; |
| try { |
| stream.close(); |
| } catch (IOException e) { |
| //ignore |
| } |
| } |
| } |