| /******************************************************************************* |
| * Copyright (c) 2008, 2009 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.equinox.internal.p2.metadata.repository; |
| |
| import java.io.*; |
| import java.net.URI; |
| import java.util.Map; |
| import java.util.jar.JarEntry; |
| import java.util.jar.JarInputStream; |
| import org.eclipse.core.runtime.*; |
| import org.eclipse.equinox.internal.p2.core.helpers.Tracing; |
| import org.eclipse.equinox.internal.p2.persistence.CompositeRepositoryIO; |
| import org.eclipse.equinox.internal.p2.persistence.CompositeRepositoryState; |
| 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.IMetadataRepositoryManager; |
| import org.eclipse.equinox.p2.repository.metadata.spi.MetadataRepositoryFactory; |
| import org.eclipse.osgi.util.NLS; |
| |
| public class CompositeMetadataRepositoryFactory extends MetadataRepositoryFactory { |
| |
| private static final String JAR_EXTENSION = ".jar"; //$NON-NLS-1$ |
| private static final String XML_EXTENSION = ".xml"; //$NON-NLS-1$ |
| private static final String PROTOCOL_FILE = "file"; //$NON-NLS-1$ |
| public static final String CONTENT_FILENAME = "compositeContent"; //$NON-NLS-1$ |
| |
| public IMetadataRepository create(URI location, String name, String type, Map<String, String> properties) { |
| return new CompositeMetadataRepository(getManager(), location, name, properties); |
| } |
| |
| private IMetadataRepositoryManager getManager() { |
| if (getAgent() != null) |
| return (IMetadataRepositoryManager) getAgent().getService(IMetadataRepositoryManager.SERVICE_NAME); |
| return null; |
| } |
| |
| /** |
| * 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 jarLocation = CompositeMetadataRepository.getActualLocationURI(location, JAR_EXTENSION); |
| URI xmlLocation = CompositeMetadataRepository.getActualLocationURI(location, XML_EXTENSION); |
| // If the repository is local, we can return the repository file directly |
| if (PROTOCOL_FILE.equals(xmlLocation.getScheme())) { |
| //look for a compressed local file |
| localFile = URIUtil.toFile(jarLocation); |
| if (localFile.exists()) |
| return localFile; |
| //look for an uncompressed local file |
| localFile = URIUtil.toFile(xmlLocation); |
| 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 = (CacheManager) getAgent().getService(CacheManager.SERVICE_NAME); |
| if (cache == null) |
| throw new IllegalArgumentException("Cache manager service not available"); //$NON-NLS-1$ |
| localFile = cache.createCache(location, CONTENT_FILENAME, monitor); |
| if (localFile == null) { |
| //there is no remote file in either form |
| String msg = NLS.bind(Messages.io_failedRead, location); |
| throw new ProvisionException(new Status(IStatus.ERROR, Activator.ID, ProvisionException.REPOSITORY_NOT_FOUND, msg, null)); |
| } |
| return localFile; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.equinox.p2.repository.metadata.spi.MetadataRepositoryFactory#load(java.net.URL, org.eclipse.core.runtime.IProgressMonitor) |
| */ |
| 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 { |
| //non local repos are not modifiable |
| if (!PROTOCOL_FILE.equals(location.getScheme()) && (flags & IRepositoryManager.REPOSITORY_HINT_MODIFIABLE) > 0) |
| return null; |
| |
| File localFile = getLocalFile(location, sub.newChild(300)); |
| InputStream inStream = new BufferedInputStream(new FileInputStream(localFile)); |
| JarInputStream jarStream = null; |
| try { |
| //if reading from a jar, obtain a stream on the entry with the actual contents |
| if (localFile.getAbsolutePath().endsWith(JAR_EXTENSION)) { |
| jarStream = new JarInputStream(inStream); |
| JarEntry jarEntry = jarStream.getNextJarEntry(); |
| String entryName = CONTENT_FILENAME + CompositeMetadataRepository.XML_EXTENSION; |
| while (jarEntry != null && (!entryName.equals(jarEntry.getName()))) { |
| jarEntry = jarStream.getNextJarEntry(); |
| } |
| //if there is a jar but the entry is missing or invalid, treat this as an invalid repository |
| if (jarEntry == null) |
| throw new IOException(NLS.bind(Messages.repoMan_invalidLocation, location)); |
| } |
| //parse the repository descriptor file |
| sub.setWorkRemaining(100); |
| InputStream descriptorStream = jarStream != null ? jarStream : inStream; |
| CompositeRepositoryIO io = new CompositeRepositoryIO(); |
| CompositeRepositoryState resultState = io.read(localFile.toURL(), descriptorStream, CompositeMetadataRepository.PI_REPOSITORY_TYPE, sub.newChild(100)); |
| if (resultState.getLocation() == null) |
| resultState.setLocation(location); |
| CompositeMetadataRepository result = new CompositeMetadataRepository(getManager(), resultState); |
| if (Tracing.DEBUG_METADATA_PARSING) { |
| time += System.currentTimeMillis(); |
| Tracing.debug(debugMsg + "time (ms): " + time); //$NON-NLS-1$ |
| } |
| return result; |
| } finally { |
| safeClose(jarStream); |
| safeClose(inStream); |
| } |
| } 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 |
| } |
| } |
| } |