| /******************************************************************************* |
| * Copyright (c) 2008 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.core.helpers; |
| |
| import java.lang.ref.SoftReference; |
| import java.net.MalformedURLException; |
| import java.net.URL; |
| import java.util.*; |
| import org.eclipse.core.runtime.*; |
| import org.eclipse.core.runtime.preferences.ConfigurationScope; |
| import org.eclipse.equinox.internal.p2.core.Activator; |
| import org.eclipse.equinox.internal.provisional.p2.core.ProvisionException; |
| import org.eclipse.equinox.internal.provisional.p2.core.eventbus.IProvisioningEventBus; |
| import org.eclipse.equinox.internal.provisional.p2.core.eventbus.ProvisioningListener; |
| import org.eclipse.equinox.internal.provisional.p2.core.repository.*; |
| import org.eclipse.osgi.util.NLS; |
| import org.osgi.service.prefs.BackingStoreException; |
| import org.osgi.service.prefs.Preferences; |
| |
| /** |
| * Common code shared between artifact and metadata repository managers. |
| */ |
| public abstract class AbstractRepositoryManager implements IRepositoryManager, ProvisioningListener { |
| protected static class RepositoryInfo { |
| public String description; |
| public boolean isEnabled = true; |
| public boolean isSystem = false; |
| public URL location; |
| public String name; |
| public SoftReference repository; |
| public String suffix; |
| |
| public RepositoryInfo() { |
| super(); |
| } |
| } |
| |
| public static final String ATTR_SUFFIX = "suffix"; //$NON-NLS-1$ |
| public static final String EL_FACTORY = "factory"; //$NON-NLS-1$ |
| public static final String EL_FILTER = "filter"; //$NON-NLS-1$ |
| public static final String KEY_DESCRIPTION = "description"; //$NON-NLS-1$ |
| public static final String KEY_ENABLED = "enabled"; //$NON-NLS-1$ |
| public static final String KEY_NAME = "name"; //$NON-NLS-1$ |
| public static final String KEY_PROVIDER = "provider"; //$NON-NLS-1$ |
| public static final String KEY_SUFFIX = "suffix"; //$NON-NLS-1$ |
| public static final String KEY_SYSTEM = "isSystem"; //$NON-NLS-1$ |
| public static final String KEY_TYPE = "type"; //$NON-NLS-1$ |
| public static final String KEY_URL = "url"; //$NON-NLS-1$ |
| public static final String KEY_VERSION = "version"; //$NON-NLS-1$ |
| |
| public static final String NODE_REPOSITORIES = "repositories"; //$NON-NLS-1$ |
| |
| /** |
| * Map of String->RepositoryInfo, where String is the repository key |
| * obtained via getKey(URL). |
| */ |
| protected Map repositories = null; |
| |
| //lock object to be held when referring to the repositories field |
| protected final Object repositoryLock = new Object(); |
| |
| /** |
| * Cache List of repositories that are not reachable. Maintain cache |
| * for short duration because repository may become available at any time. |
| */ |
| protected SoftReference unavailableRepositories; |
| |
| protected AbstractRepositoryManager() { |
| IProvisioningEventBus bus = (IProvisioningEventBus) ServiceHelper.getService(Activator.getContext(), IProvisioningEventBus.SERVICE_NAME); |
| if (bus != null) |
| bus.addListener(this); |
| } |
| |
| /** |
| * Adds a repository to the list of known repositories |
| * @param repository the repository object to add |
| * @param signalAdd whether a repository change event should be fired |
| * @param suffix the suffix used to load the repository, or <code>null</code> if unknown |
| */ |
| protected void addRepository(IRepository repository, boolean signalAdd, String suffix) { |
| boolean added = false; |
| synchronized (repositoryLock) { |
| if (repositories == null) |
| restoreRepositories(); |
| String key = getKey(repository.getLocation()); |
| RepositoryInfo info = (RepositoryInfo) repositories.get(key); |
| if (info == null) { |
| info = new RepositoryInfo(); |
| added = true; |
| repositories.put(key, info); |
| } |
| info.repository = new SoftReference(repository); |
| info.name = repository.getName(); |
| info.description = repository.getDescription(); |
| info.location = repository.getLocation(); |
| String value = (String) repository.getProperties().get(IRepository.PROP_SYSTEM); |
| info.isSystem = value == null ? false : Boolean.valueOf(value).booleanValue(); |
| info.suffix = suffix; |
| } |
| // save the given repository in the preferences. |
| remember(repository, suffix); |
| if (added && signalAdd) |
| broadcastChangeEvent(repository.getLocation(), IRepository.TYPE_METADATA, RepositoryEvent.ADDED, true); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.equinox.internal.provisional.p2.core.repository.IRepositoryManager#addRepository(java.net.URL) |
| */ |
| public void addRepository(URL location) { |
| //add the repository, or enable it if already known |
| if (!addRepository(location, true, true)) |
| setEnabled(location, true); |
| } |
| |
| /** |
| * Adds the repository to the list of known repositories. |
| * @param location The repository location |
| * @param isEnabled Whether the repository should be enabled |
| * @param signalAdd Whether a repository add event should be broadcast |
| * @return <code>true</code> if the repository was actually added, and |
| * <code>false</code> otherwise. |
| */ |
| private boolean addRepository(URL location, boolean isEnabled, boolean signalAdd) { |
| RepositoryInfo info = new RepositoryInfo(); |
| info.location = location; |
| info.isEnabled = isEnabled; |
| boolean added = true; |
| synchronized (repositoryLock) { |
| if (repositories == null) |
| restoreRepositories(); |
| if (contains(location)) |
| return false; |
| added = repositories.put(getKey(location), info) == null; |
| // save the given repository in the preferences. |
| remember(info); |
| } |
| if (added && signalAdd) |
| broadcastChangeEvent(location, getRepositoryType(), RepositoryEvent.ADDED, isEnabled); |
| return added; |
| } |
| |
| protected IRepository basicGetRepository(URL location) { |
| synchronized (repositoryLock) { |
| if (repositories == null) |
| restoreRepositories(); |
| RepositoryInfo info = (RepositoryInfo) repositories.get(getKey(location)); |
| if (info == null || info.repository == null) |
| return null; |
| IRepository repo = (IRepository) info.repository.get(); |
| //update our repository info because the repository may have changed |
| if (repo != null) |
| addRepository(repo, false, null); |
| return repo; |
| } |
| } |
| |
| public IRepository basicRefreshRepository(URL location, IProgressMonitor monitor) throws ProvisionException { |
| clearNotFound(location); |
| boolean wasEnabled = isEnabled(location); |
| //remove the repository so event is broadcast and repositories can clear their caches |
| if (!removeRepository(location)) |
| fail(location, ProvisionException.REPOSITORY_NOT_FOUND); |
| try { |
| IRepository result = loadRepository(location, monitor, null); |
| setEnabled(location, wasEnabled); |
| return result; |
| } catch (ProvisionException e) { |
| //if we failed to load, make sure the repository is not lost |
| addRepository(location, wasEnabled, true); |
| throw e; |
| } |
| } |
| |
| private void broadcastChangeEvent(URL location, int repositoryType, int kind, boolean isEnabled) { |
| IProvisioningEventBus bus = (IProvisioningEventBus) ServiceHelper.getService(Activator.getContext(), IProvisioningEventBus.class.getName()); |
| if (bus != null) |
| bus.publishEvent(new RepositoryEvent(location, repositoryType, kind, isEnabled)); |
| } |
| |
| /** |
| * Check if we recently attempted to load the given location and failed |
| * to find anything. Returns <code>true</code> if the repository was not |
| * found, and <code>false</code> otherwise. |
| */ |
| private boolean checkNotFound(URL location) { |
| if (unavailableRepositories == null) |
| return false; |
| List badRepos = (List) unavailableRepositories.get(); |
| if (badRepos == null) |
| return false; |
| return badRepos.contains(location); |
| } |
| |
| /** |
| * Clear the fact that we tried to load a repository at this location and did not find anything. |
| */ |
| protected void clearNotFound(URL location) { |
| List badRepos; |
| if (unavailableRepositories != null) { |
| badRepos = (List) unavailableRepositories.get(); |
| if (badRepos != null) { |
| badRepos.remove(location); |
| return; |
| } |
| } |
| } |
| |
| /** |
| * TODO make private once API is available. See bug 248269. |
| */ |
| public boolean contains(URL location) { |
| synchronized (repositoryLock) { |
| if (repositories == null) |
| restoreRepositories(); |
| return repositories.containsKey(getKey(location)); |
| } |
| } |
| |
| /** |
| * Returns the executable extension, or <code>null</code> if there |
| * was no corresponding extension, or an error occurred loading it |
| */ |
| protected Object createExecutableExtension(IExtension extension, String element) { |
| IConfigurationElement[] elements = extension.getConfigurationElements(); |
| CoreException failure = null; |
| for (int i = 0; i < elements.length; i++) { |
| if (elements[i].getName().equals(element)) { |
| try { |
| return elements[i].createExecutableExtension("class"); //$NON-NLS-1$ |
| } catch (CoreException e) { |
| log("Error loading repository extension: " + extension.getUniqueIdentifier(), failure); //$NON-NLS-1$ |
| return null; |
| } |
| } |
| } |
| log("Malformed repository extension: " + extension.getUniqueIdentifier(), null); //$NON-NLS-1$ |
| return null; |
| } |
| |
| /** |
| * Loads and returns a repository using the given repository factory extension. Returns |
| * null if no factory could be found associated with that extension. |
| */ |
| protected abstract IRepository factoryLoad(URL location, IExtension extension, SubMonitor monitor) throws ProvisionException; |
| |
| protected void fail(URL location, int code) throws ProvisionException { |
| String msg = null; |
| switch (code) { |
| case ProvisionException.REPOSITORY_EXISTS : |
| msg = NLS.bind(Messages.repoMan_exists, location); |
| break; |
| case ProvisionException.REPOSITORY_UNKNOWN_TYPE : |
| msg = NLS.bind(Messages.repoMan_unknownType, location); |
| break; |
| case ProvisionException.REPOSITORY_FAILED_READ : |
| msg = NLS.bind(Messages.repoMan_failedRead, location); |
| break; |
| case ProvisionException.REPOSITORY_NOT_FOUND : |
| msg = NLS.bind(Messages.repoMan_notExists, location); |
| break; |
| } |
| if (msg == null) |
| msg = Messages.repoMan_internalError; |
| throw new ProvisionException(new Status(IStatus.ERROR, getBundleId(), code, msg, null)); |
| } |
| |
| protected IExtension[] findMatchingRepositoryExtensions(String suffix, String type) { |
| IConfigurationElement[] elt = null; |
| if (type != null && type.length() > 0) { |
| IExtension ext = RegistryFactory.getRegistry().getExtension(getRepositoryProviderExtensionPointId(), type); |
| elt = (ext != null) ? ext.getConfigurationElements() : new IConfigurationElement[0]; |
| } else { |
| elt = RegistryFactory.getRegistry().getConfigurationElementsFor(getRepositoryProviderExtensionPointId()); |
| } |
| int count = 0; |
| for (int i = 0; i < elt.length; i++) { |
| if (EL_FILTER.equals(elt[i].getName())) { |
| if (!suffix.equals(elt[i].getAttribute(ATTR_SUFFIX))) { |
| elt[i] = null; |
| } else { |
| count++; |
| } |
| } else { |
| elt[i] = null; |
| } |
| } |
| IExtension[] results = new IExtension[count]; |
| for (int i = 0; i < elt.length; i++) { |
| if (elt[i] != null) |
| results[--count] = elt[i].getDeclaringExtension(); |
| } |
| return results; |
| } |
| |
| protected String[] getAllSuffixes() { |
| IConfigurationElement[] elements = RegistryFactory.getRegistry().getConfigurationElementsFor(getRepositoryProviderExtensionPointId()); |
| ArrayList result = new ArrayList(elements.length); |
| result.add(getDefaultSuffix()); |
| for (int i = 0; i < elements.length; i++) { |
| if (elements[i].getName().equals(EL_FILTER)) { |
| String suffix = elements[i].getAttribute(ATTR_SUFFIX); |
| if (!result.contains(suffix)) |
| result.add(suffix); |
| } |
| } |
| return (String[]) result.toArray(new String[result.size()]); |
| } |
| |
| /** |
| * Returns the bundle id of the bundle that provides the concrete repository manager |
| * @return a symbolic bundle id |
| */ |
| protected abstract String getBundleId(); |
| |
| /** |
| * Returns the default repository suffix. This is used to ensure a particular |
| * repository type is preferred over all others. |
| */ |
| protected abstract String getDefaultSuffix(); |
| |
| /* |
| * Return a string key based on the given repository location which |
| * is suitable for use as a preference node name. |
| * TODO: convert local file system URL to canonical form |
| */ |
| private String getKey(URL location) { |
| String key = location.toExternalForm().replace('/', '_'); |
| //remove trailing slash |
| if (key.endsWith("_")) //$NON-NLS-1$ |
| key = key.substring(0, key.length() - 1); |
| return key; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.equinox.internal.provisional.p2.core.repository.IRepositoryManager#getKnownRepositories(int) |
| */ |
| public URL[] getKnownRepositories(int flags) { |
| synchronized (repositoryLock) { |
| if (repositories == null) |
| restoreRepositories(); |
| ArrayList result = new ArrayList(); |
| int i = 0; |
| for (Iterator it = repositories.values().iterator(); it.hasNext(); i++) { |
| RepositoryInfo info = (RepositoryInfo) it.next(); |
| if (matchesFlags(info, flags)) |
| result.add(info.location); |
| } |
| return (URL[]) result.toArray(new URL[result.size()]); |
| } |
| } |
| |
| /** |
| * Return the preference node which is the root for where we store the repository information. |
| */ |
| private Preferences getPreferences() { |
| return new ConfigurationScope().getNode(getBundleId()).node(NODE_REPOSITORIES); |
| } |
| |
| /*(non-Javadoc) |
| * @see org.eclipse.equinox.internal.provisional.p2.core.repository.IRepositoryManager#getRepositoryProperty(java.net.URL, java.lang.String) |
| */ |
| public String getRepositoryProperty(URL location, String key) { |
| synchronized (repositoryLock) { |
| if (repositories == null) |
| restoreRepositories(); |
| RepositoryInfo info = (RepositoryInfo) repositories.get(getKey(location)); |
| if (info == null) |
| return null;// Repository not found |
| if (IRepository.PROP_DESCRIPTION.equals(key)) |
| return info.description; |
| if (IRepository.PROP_NAME.equals(key)) |
| return info.name; |
| if (IRepository.PROP_SYSTEM.equals(key)) |
| return Boolean.toString(info.isSystem); |
| // Key not known, return null |
| return null; |
| } |
| } |
| |
| /** |
| * Returns the fully qualified id of the repository provider extension point. |
| */ |
| protected abstract String getRepositoryProviderExtensionPointId(); |
| |
| /** |
| * Returns the system property used to specify additional repositories to be |
| * automatically added to the list of known repositories. |
| */ |
| protected abstract String getRepositorySystemProperty(); |
| |
| /** |
| * Returns the repository type stored in this manager. |
| */ |
| protected abstract int getRepositoryType(); |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.equinox.internal.provisional.p2.core.repository.IRepositoryManager#isEnabled(java.net.URL) |
| */ |
| public boolean isEnabled(URL location) { |
| synchronized (repositoryLock) { |
| if (repositories == null) |
| restoreRepositories(); |
| RepositoryInfo info = (RepositoryInfo) repositories.get(getKey(location)); |
| if (info != null) |
| return info.isEnabled; |
| // Repository not found, return false |
| return false; |
| } |
| } |
| |
| protected IRepository loadRepository(URL location, IProgressMonitor monitor, String type) throws ProvisionException { |
| boolean added = false; |
| IRepository result = null; |
| synchronized (repositoryLock) { |
| result = basicGetRepository(location); |
| if (result != null) |
| return result; |
| if (checkNotFound(location)) |
| fail(location, ProvisionException.REPOSITORY_NOT_FOUND); |
| String[] suffixes = sortSuffixes(getAllSuffixes(), location); |
| SubMonitor sub = SubMonitor.convert(monitor, NLS.bind(Messages.repoMan_adding, location), suffixes.length * 100); |
| //add the repository first so that it will be enabled, but don't send add event until after the load |
| added = addRepository(location, true, false); |
| try { |
| for (int i = 0; i < suffixes.length; i++) { |
| if (sub.isCanceled()) |
| throw new OperationCanceledException(); |
| result = loadRepository(location, suffixes[i], type, sub.newChild(100)); |
| if (result != null) { |
| addRepository(result, false, suffixes[i]); |
| break; |
| } |
| } |
| } finally { |
| sub.done(); |
| } |
| if (result == null) { |
| //if we just added the repository, remove it because it cannot be loaded |
| if (added) |
| removeRepository(location, false); |
| //eagerly cleanup missing system repositories |
| if (Boolean.valueOf(getRepositoryProperty(location, IRepository.PROP_SYSTEM)).booleanValue()) |
| removeRepository(location); |
| else |
| rememberNotFound(location); |
| fail(location, ProvisionException.REPOSITORY_NOT_FOUND); |
| } |
| } |
| //broadcast the add event outside sync block |
| if (added) |
| broadcastChangeEvent(location, IRepository.TYPE_METADATA, RepositoryEvent.ADDED, true); |
| return result; |
| } |
| |
| private IRepository loadRepository(URL location, String suffix, String type, SubMonitor monitor) { |
| IExtension[] providers = findMatchingRepositoryExtensions(suffix, type); |
| // Loop over the candidates and return the first one that successfully loads |
| monitor.beginTask("", providers.length * 10); //$NON-NLS-1$ |
| for (int i = 0; i < providers.length; i++) |
| try { |
| return factoryLoad(location, providers[i], monitor); |
| } catch (CoreException e) { |
| if (e.getStatus().getCode() != ProvisionException.REPOSITORY_NOT_FOUND) |
| log("Unable to load repository: " + location, e); //$NON-NLS-1$ |
| } |
| return null; |
| } |
| |
| protected void log(String message, Throwable t) { |
| LogHelper.log(new Status(IStatus.ERROR, getBundleId(), message, t)); |
| } |
| |
| private boolean matchesFlags(RepositoryInfo info, int flags) { |
| if ((flags & REPOSITORIES_SYSTEM) == REPOSITORIES_SYSTEM) |
| if (!info.isSystem) |
| return false; |
| if ((flags & REPOSITORIES_NON_SYSTEM) == REPOSITORIES_NON_SYSTEM) |
| if (info.isSystem) |
| return false; |
| if ((flags & REPOSITORIES_DISABLED) == REPOSITORIES_DISABLED) { |
| if (info.isEnabled) |
| return false; |
| } else { |
| //ignore disabled repositories for all other flag types |
| if (!info.isEnabled) |
| return false; |
| } |
| if ((flags & REPOSITORIES_LOCAL) == REPOSITORIES_LOCAL) |
| return "file".equals(info.location.getProtocol()); //$NON-NLS-1$ |
| return true; |
| } |
| |
| /*(non-Javadoc) |
| * @see org.eclipse.equinox.internal.provisional.p2.core.eventbus.ProvisioningListener#notify(java.util.EventObject) |
| */ |
| public void notify(EventObject o) { |
| if (o instanceof RepositoryEvent) { |
| RepositoryEvent event = (RepositoryEvent) o; |
| if (event.getKind() == RepositoryEvent.DISCOVERED && event.getRepositoryType() == getRepositoryType()) |
| addRepository(event.getRepositoryLocation(), event.isRepositoryEnabled(), true); |
| } |
| } |
| |
| /** |
| * Sets a preference and returns <code>true</code> if the preference |
| * was actually changed. |
| */ |
| protected boolean putValue(Preferences node, String key, String newValue) { |
| String oldValue = node.get(key, null); |
| if (oldValue == newValue || (oldValue != null && oldValue.equals(newValue))) |
| return false; |
| if (newValue == null) |
| node.remove(key); |
| else |
| node.put(key, newValue); |
| return true; |
| } |
| |
| /* |
| * Add the given repository object to the preferences and save. |
| */ |
| private void remember(IRepository repository, String suffix) { |
| boolean changed = false; |
| Preferences node = getPreferences().node(getKey(repository.getLocation())); |
| changed |= putValue(node, KEY_URL, repository.getLocation().toExternalForm()); |
| changed |= putValue(node, KEY_DESCRIPTION, repository.getDescription()); |
| changed |= putValue(node, KEY_NAME, repository.getName()); |
| changed |= putValue(node, KEY_PROVIDER, repository.getProvider()); |
| changed |= putValue(node, KEY_TYPE, repository.getType()); |
| changed |= putValue(node, KEY_VERSION, repository.getVersion()); |
| changed |= putValue(node, KEY_SYSTEM, (String) repository.getProperties().get(IRepository.PROP_SYSTEM)); |
| changed |= putValue(node, KEY_SUFFIX, suffix); |
| if (changed) |
| saveToPreferences(); |
| } |
| |
| /* |
| * Save the list of repositories in the preference store. |
| */ |
| private boolean remember(RepositoryInfo info) { |
| boolean changed = false; |
| Preferences node = getPreferences().node(getKey(info.location)); |
| changed |= putValue(node, KEY_URL, info.location.toExternalForm()); |
| changed |= putValue(node, KEY_SYSTEM, Boolean.toString(info.isSystem)); |
| changed |= putValue(node, KEY_DESCRIPTION, info.description); |
| changed |= putValue(node, KEY_NAME, info.name); |
| changed |= putValue(node, KEY_SUFFIX, info.suffix); |
| changed |= putValue(node, KEY_ENABLED, Boolean.toString(info.isEnabled)); |
| if (changed) |
| saveToPreferences(); |
| return changed; |
| } |
| |
| /** |
| * Cache the fact that we tried to load a repository at this location and did not find anything. |
| */ |
| private void rememberNotFound(URL location) { |
| List badRepos; |
| if (unavailableRepositories != null) { |
| badRepos = (List) unavailableRepositories.get(); |
| if (badRepos != null) { |
| badRepos.add(location); |
| return; |
| } |
| } |
| badRepos = new ArrayList(); |
| badRepos.add(location); |
| unavailableRepositories = new SoftReference(badRepos); |
| } |
| |
| public boolean removeRepository(URL toRemove) { |
| return removeRepository(toRemove, true); |
| } |
| |
| private boolean removeRepository(URL toRemove, boolean signalRemove) { |
| Assert.isNotNull(toRemove); |
| final String repoKey = getKey(toRemove); |
| synchronized (repositoryLock) { |
| if (repositories == null) |
| restoreRepositories(); |
| if (repositories.remove(repoKey) == null) |
| return false; |
| } |
| // remove the repository from the preference store |
| try { |
| getPreferences().node(repoKey).removeNode(); |
| saveToPreferences(); |
| } catch (BackingStoreException e) { |
| log("Error saving preferences", e); //$NON-NLS-1$ |
| } |
| //TODO: compute and pass appropriate isEnabled flag |
| if (signalRemove) |
| broadcastChangeEvent(toRemove, getRepositoryType(), RepositoryEvent.REMOVED, true); |
| return true; |
| } |
| |
| /* |
| * Load the list of repositories from the preferences. |
| */ |
| private void restoreFromPreferences() { |
| // restore the list of repositories from the preference store |
| Preferences node = getPreferences(); |
| String[] children; |
| try { |
| children = node.childrenNames(); |
| } catch (BackingStoreException e) { |
| log("Error restoring repositories from preferences", e); //$NON-NLS-1$ |
| return; |
| } |
| for (int i = 0; i < children.length; i++) { |
| Preferences child = node.node(children[i]); |
| String locationString = child.get(KEY_URL, null); |
| if (locationString == null) |
| continue; |
| try { |
| RepositoryInfo info = new RepositoryInfo(); |
| info.location = new URL(locationString); |
| info.name = child.get(KEY_NAME, null); |
| info.description = child.get(KEY_DESCRIPTION, null); |
| info.isSystem = child.getBoolean(KEY_SYSTEM, false); |
| info.isEnabled = child.getBoolean(KEY_ENABLED, true); |
| info.suffix = child.get(KEY_SUFFIX, null); |
| repositories.put(getKey(info.location), info); |
| } catch (MalformedURLException e) { |
| log("Error while restoring repository: " + locationString, e); //$NON-NLS-1$ |
| } |
| } |
| // now that we have loaded everything, remember them |
| saveToPreferences(); |
| } |
| |
| private void restoreFromSystemProperty() { |
| String locationString = Activator.getContext().getProperty(getRepositorySystemProperty()); |
| if (locationString != null) { |
| StringTokenizer tokenizer = new StringTokenizer(locationString, ","); //$NON-NLS-1$ |
| while (tokenizer.hasMoreTokens()) { |
| try { |
| addRepository(new URL(tokenizer.nextToken()), true, true); |
| } catch (MalformedURLException e) { |
| log("Error while restoring repository " + locationString, e); //$NON-NLS-1$ |
| } |
| } |
| } |
| } |
| |
| /** |
| * Restores the repository list. |
| */ |
| private void restoreRepositories() { |
| synchronized (repositoryLock) { |
| repositories = new HashMap(); |
| restoreSpecialRepositories(); |
| restoreFromSystemProperty(); |
| restoreFromPreferences(); |
| } |
| } |
| |
| /** |
| * Hook method to restore special additional repositories. |
| */ |
| protected void restoreSpecialRepositories() { |
| //by default no special repositories |
| } |
| |
| /* |
| * Save the list of repositories to the file-system. |
| */ |
| private void saveToPreferences() { |
| try { |
| getPreferences().flush(); |
| } catch (BackingStoreException e) { |
| log("Error while saving repositories in preferences", e); //$NON-NLS-1$ |
| } |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.equinox.internal.provisional.p2.core.repository.IRepositoryManager#setEnabled(java.net.URL, boolean) |
| */ |
| public void setEnabled(URL location, boolean enablement) { |
| synchronized (repositoryLock) { |
| if (repositories == null) |
| restoreRepositories(); |
| RepositoryInfo info = (RepositoryInfo) repositories.get(getKey(location)); |
| if (info == null || info.isEnabled == enablement) |
| return; |
| info.isEnabled = enablement; |
| remember(info); |
| } |
| broadcastChangeEvent(location, getRepositoryType(), RepositoryEvent.ENABLEMENT, enablement); |
| } |
| |
| /** |
| * Optimize the order in which repository suffixes are searched by trying |
| * the last successfully loaded suffix first. |
| */ |
| private String[] sortSuffixes(String[] suffixes, URL location) { |
| synchronized (repositoryLock) { |
| if (repositories == null) |
| restoreRepositories(); |
| RepositoryInfo info = (RepositoryInfo) repositories.get(getKey(location)); |
| if (info == null || info.suffix == null) |
| return suffixes; |
| //move lastSuffix to the front of the list but preserve order of remaining entries |
| String lastSuffix = info.suffix; |
| for (int i = 0; i < suffixes.length; i++) { |
| if (lastSuffix.equals(suffixes[i])) { |
| System.arraycopy(suffixes, 0, suffixes, 1, i); |
| suffixes[0] = lastSuffix; |
| return suffixes; |
| } |
| } |
| } |
| return suffixes; |
| } |
| |
| } |
