// TODO: support question/answer with the UI to resolve conflicts
@Override
public void upgrade(
LocalExtension previousLocalExtension, LocalExtension newLocalExtension, String namespace)
throws InstallException {
// TODO
// 1) find all modified pages between old and new version
// 2) compare old version and wiki (to find pages modified by user)
// 3) delete pages removed in new version (even if modified ?)
// 4) merge xar
// 4.1) merge modified pages in wiki with diff between old/new version
// 4.2) update unmodified pages different between old and new version
// CURRENT
XarLocalExtension previousXarExtension;
try {
previousXarExtension =
(XarLocalExtension) this.xarRepository.resolve(previousLocalExtension.getId());
} catch (ResolveException e) {
// Not supposed to be possible
throw new InstallException(
"Failed to get xar extension ["
+ previousLocalExtension.getId()
+ "] from xar repository",
e);
}
// Install new pages
install(previousXarExtension, newLocalExtension, namespace);
// Uninstall old version pages not anymore in the new version
Set<XarEntry> previousPages = new HashSet<XarEntry>(previousXarExtension.getPages());
List<XarEntry> newPages;
try {
XarLocalExtension newXarExtension =
(XarLocalExtension) this.xarRepository.resolve(newLocalExtension.getId());
newPages = newXarExtension.getPages();
} catch (ResolveException e) {
try {
newPages =
this.packager.getEntries(new File(newLocalExtension.getFile().getAbsolutePath()));
} catch (IOException e1) {
throw new InstallException(
"Failed to get xar extension [" + newLocalExtension.getId() + "] pages", e);
}
}
for (XarEntry entry : newPages) {
previousPages.remove(entry);
}
try {
this.packager.unimportPages(previousPages, namespace);
} catch (Exception e) {
this.logger.warn(
"Exception when cleaning pages removed since previous xar extension version", e);
}
}
/**
* Check that the extension is properly reported to be not installed in the given namespace.
*
* @param localExtension the local extension to check
* @param namespace the namespace where it should not be installed
*/
private void ckeckUninstallStatus(LocalExtension localExtension, String namespace) {
// check extension status
Assert.assertFalse(DefaultInstalledExtension.isInstalled(localExtension, namespace));
Assert.assertFalse(DefaultInstalledExtension.isInstalled(localExtension, null));
// check repository status
Assert.assertNull(
this.installedExtensionRepository.getInstalledExtension(
localExtension.getId().getId(), namespace));
Assert.assertNull(
this.installedExtensionRepository.getInstalledExtension(
localExtension.getId().getId(), null));
}
@Override
public void install(LocalExtension localExtension, String namespace) throws InstallException {
ExtensionURLClassLoader classLoader =
this.jarExtensionClassLoader.getURLClassLoader(namespace, true);
// 1) load jar into classloader
try {
classLoader.addURL(localExtension.getFile().toURI().toURL());
} catch (MalformedURLException e) {
throw new InstallException("Failed to load jar file", e);
}
// 2) load and register components
loadComponents(localExtension.getFile(), classLoader);
}
public void uninstall(LocalExtension localExtension, String namespace) throws UninstallException {
// TODO: delete pages from the wiki which belong only to this extension (several extension could
// have some
// common pages which will cause all sort of other issues but still could happen technically)
// TODO: maybe remove only unmodified page ? At least ask for sure when question/answer system
// will be
// implemented
try {
XarLocalExtension xarLocalExtension =
(XarLocalExtension) this.xarRepository.resolve(localExtension.getId());
List<XarEntry> pages = xarLocalExtension.getPages();
this.packager.unimportPages(pages, namespace);
} catch (Exception e) {
// Not supposed to be possible
throw new UninstallException(
"Failed to get xar extension [" + localExtension.getId() + "] from xar repository", e);
}
}
private void registerExtension(XWikiContext context) {
// Register the package as extension if it's one
if (isInstallExension()
&& StringUtils.isNotEmpty(getExtensionId())
&& StringUtils.isNotEmpty(getVersion())) {
ExtensionId extensionId = new ExtensionId(getExtensionId(), getVersion());
try {
LocalExtensionRepository localRepository =
Utils.getComponent(LocalExtensionRepository.class);
LocalExtension localExtension = localRepository.getLocalExtension(extensionId);
if (localExtension == null) {
Extension extension;
try {
// Try to find and download the extension from a repository
extension = Utils.getComponent(ExtensionRepositoryManager.class).resolve(extensionId);
} catch (ResolveException e) {
LOGGER.debug("Can't find extension [{}]", extensionId, e);
// FIXME: Create a dummy extension. Need support for partial/lazy extension.
return;
}
localExtension = localRepository.storeExtension(extension);
}
// Register the extension as installed
InstalledExtensionRepository installedRepository =
Utils.getComponent(InstalledExtensionRepository.class);
String namespace = "wiki:" + context.getWikiId();
InstalledExtension installedExtension =
installedRepository.getInstalledExtension(localExtension.getId());
if (installedExtension == null || !installedExtension.isInstalled(namespace)) {
installedRepository.installExtension(localExtension, namespace, false);
}
} catch (Exception e) {
LOGGER.error("Failed to register extenion [{}] from the XAR", extensionId, e);
}
}
}
@Override
public void uninstall(LocalExtension localExtension, String namespace) throws UninstallException {
ExtensionURLClassLoader classLoader =
this.jarExtensionClassLoader.getURLClassLoader(namespace, false);
if (namespace == null || classLoader.getWiki().equals(namespace)) {
// unregister components
unloadComponents(localExtension.getFile(), classLoader);
// TODO: find a way to unload the jar from the classloader
}
}
/**
* {@inheritDoc}
*
* @see
* org.xwiki.extension.handler.ExtensionHandlerManager#install(org.xwiki.extension.LocalExtension,
* java.lang.String)
*/
public void install(LocalExtension localExtension, String namespace) throws InstallException {
ExtensionHandler extensionHandler;
try {
// Load extension
extensionHandler = getExtensionHandler(localExtension);
} catch (ComponentLookupException e) {
throw new InstallException(LOOKUPERROR + '[' + localExtension + ']', e);
}
try {
extensionHandler.install(localExtension, namespace);
} catch (Exception e) {
// TODO: cleanup
throw new InstallException("Failed to install extension [" + localExtension.getId() + "]", e);
}
}
public void install(
XarLocalExtension previousExtension, LocalExtension localExtension, String wiki)
throws InstallException {
// TODO: should be configurable
MergeConfiguration mergeConfiguration = new MergeConfiguration();
// import xar into wiki (add new version when the page already exists)
try {
this.packager.importXAR(
previousExtension != null
? new XarFile(
new File(previousExtension.getFile().getAbsolutePath()),
previousExtension.getPages())
: null,
new File(localExtension.getFile().getAbsolutePath()),
wiki,
mergeConfiguration);
} catch (Exception e) {
throw new InstallException("Failed to import xar for extension [" + localExtension + "]", e);
}
}
/**
* Get the handler corresponding to the provided extension.
*
* @param localExtension the extension to handler
* @return the handler
* @throws ComponentLookupException failed to find a proper handler for the provided extension
*/
private ExtensionHandler getExtensionHandler(LocalExtension localExtension)
throws ComponentLookupException {
// Load extension
return this.componentManager.lookup(
ExtensionHandler.class, localExtension.getType().toString().toLowerCase());
}
