bundles/org.eclipse.equinox.p2.reconciler.dropins/src/org/eclipse/equinox/internal/p2/reconciler/dropins/DropinsRepositoryListener.java - equinox/rt.equinox.p2 - Git at Google

 /*******************************************************************************
  * 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.reconciler.dropins;

 import java.io.*;
 import java.net.MalformedURLException;
 import java.net.URL;
 import java.util.*;
 import org.eclipse.core.runtime.IStatus;
 import org.eclipse.core.runtime.Status;
 import org.eclipse.equinox.internal.p2.core.helpers.LogHelper;
 import org.eclipse.equinox.internal.p2.extensionlocation.ExtensionLocationArtifactRepository;
 import org.eclipse.equinox.internal.p2.extensionlocation.ExtensionLocationMetadataRepository;
 import org.eclipse.equinox.internal.provisional.p2.artifact.repository.IArtifactRepository;
 import org.eclipse.equinox.internal.provisional.p2.artifact.repository.IArtifactRepositoryManager;
 import org.eclipse.equinox.internal.provisional.p2.core.ProvisionException;
 import org.eclipse.equinox.internal.provisional.p2.core.repository.IRepository;
 import org.eclipse.equinox.internal.provisional.p2.directorywatcher.RepositoryListener;
 import org.eclipse.equinox.internal.provisional.p2.metadata.repository.IMetadataRepository;
 import org.eclipse.equinox.internal.provisional.p2.metadata.repository.IMetadataRepositoryManager;
 import org.osgi.framework.BundleContext;
 import org.osgi.framework.ServiceReference;

 public class DropinsRepositoryListener extends RepositoryListener {

 	private static final String PLUGINS = "plugins"; //$NON-NLS-1$
 	private static final String FEATURES = "features"; //$NON-NLS-1$
 	private static final String JAR = ".jar"; //$NON-NLS-1$
 	private static final String LINK = ".link"; //$NON-NLS-1$
 	private static final String ZIP = ".zip"; //$NON-NLS-1$
 	private static final String LINKS_PATH = "path"; //$NON-NLS-1$
 	private static final String DROPIN_ARTIFACT_REPOSITORIES = "dropin.artifactRepositories"; //$NON-NLS-1$
 	private static final String DROPIN_METADATA_REPOSITORIES = "dropin.metadataRepositories"; //$NON-NLS-1$
 	private static final String PIPE = "|"; //$NON-NLS-1$
 	private BundleContext context;
 	private List metadataRepositories = new ArrayList();
 	private List artifactRepositories = new ArrayList();

 	public DropinsRepositoryListener(BundleContext context, String repositoryName) {
 		super(context, repositoryName, null, true);
 		this.context = context;
 	}

 	public boolean isInterested(File file) {
 		return true;
 	}

 	public boolean added(File file) {
 		if (super.added(file))
 			return true;

 		URL repositoryURL = createRepositoryURL(file);
 		if (repositoryURL != null) {
 			getMetadataRepository(repositoryURL);
 			getArtifactRepository(repositoryURL);
 		}
 		return true;
 	}

 	public boolean changed(File file) {
 		if (super.changed(file))
 			return true;

 		URL repositoryURL = createRepositoryURL(file);
 		if (repositoryURL != null) {
 			getMetadataRepository(repositoryURL);
 			getArtifactRepository(repositoryURL);
 		}
 		return true;
 	}

 	private String getLinkPath(File file) {
 		Properties links = new Properties();
 		try {
 			InputStream input = new BufferedInputStream(new FileInputStream(file));
 			try {
 				links.load(input);
 			} finally {
 				input.close();
 			}
 		} catch (IOException e) {
 			// ignore
 		}
 		String path = links.getProperty(LINKS_PATH);
 		if (path == null) {
 			// log
 			return null;
 		}

 		// parse out link information
 		if (path.startsWith("r ")) { //$NON-NLS-1$
 			path = path.substring(2).trim();
 		} else if (path.startsWith("rw ")) { //$NON-NLS-1$
 			path = path.substring(3).trim();
 		} else {
 			path = path.trim();
 		}
 		return path;
 	}

 	private URL createRepositoryURL(File file) {
 		try {
 			file = file.getCanonicalFile();
 			String fileName = file.getName();
 			if (fileName.endsWith(LINK))
 				return getLinkRepository(file, true);

 			if (file.isDirectory()) {
 				// Check if the directory is either the plugins directory of an extension location
 				// or the features directory and the plugins folder is not present.
 				// This extra check on the features directory is done to avoid adding the parent URL twice
 				if (file.getName().equals(PLUGINS)) {
 					File parentFile = file.getParentFile();
 					return (parentFile != null) ? parentFile.toURL() : null;
 				}
 				if (file.getName().equals(FEATURES)) {
 					File parentFile = file.getParentFile();
 					if (parentFile == null || new File(parentFile, PLUGINS).isDirectory())
 						return null;
 					return parentFile.toURL();
 				}
 				return file.toURL();
 			}

 			if (fileName.endsWith(ZIP) || fileName.endsWith(JAR))
 				return new URL("jar:" + file.toURL().toExternalForm() + "!/"); //$NON-NLS-1$ //$NON-NLS-2$

 			// last resort -- we'll try to interpret the file as a link
 			return getLinkRepository(file, false);
 		} catch (IOException e) {
 			LogHelper.log(new Status(IStatus.ERROR, Activator.ID, "Error occurred while building repository location from file: " + file.getAbsolutePath(), e)); //$NON-NLS-1$
 		}
 		return null;
 	}

 	private URL getLinkRepository(File file, boolean logMissingLink) throws IOException {
 		String path = getLinkPath(file);
 		if (path == null) {
 			if (logMissingLink)
 				LogHelper.log(new Status(IStatus.ERROR, Activator.ID, "Unable to determine link location from file: " + file.getAbsolutePath())); //$NON-NLS-1$
 			return null;
 		}
 		File linkedFile = new File(path);
 		if (!linkedFile.isAbsolute()) {
 			// link support is relative to the install root
 			File root = Activator.getEclipseHome();
 			if (root != null)
 				linkedFile = new File(root, path);
 		}
 		File canonicalFile = linkedFile.getCanonicalFile();
 		return canonicalFile.toURL();
 	}

 	public void getMetadataRepository(URL repoURL) {
 		try {
 			IMetadataRepository repository = null;
 			try {
 				ExtensionLocationMetadataRepository.validate(repoURL, null);
 				Map properties = new HashMap();
 				properties.put(IRepository.PROP_SYSTEM, Boolean.TRUE.toString());
 				repository = Activator.createExtensionLocationMetadataRepository(repoURL, "dropins metadata repo: " + repoURL.toExternalForm(), properties); //$NON-NLS-1$
 			} catch (ProvisionException e) {
 				repository = Activator.loadMetadataRepository(repoURL, null);
 			}
 			metadataRepositories.add(repository);
 		} catch (ProvisionException ex) {
 			LogHelper.log(ex);
 		}
 	}

 	public void getArtifactRepository(URL repoURL) {
 		try {
 			IArtifactRepository repository = null;
 			try {
 				ExtensionLocationArtifactRepository.validate(repoURL, null);
 				Map properties = new HashMap();
 				properties.put(IRepository.PROP_SYSTEM, Boolean.TRUE.toString());
 				repository = Activator.createExtensionLocationArtifactRepository(repoURL, "dropins artifact repo: " + repoURL.toExternalForm(), properties); //$NON-NLS-1$
 				// fall through here and call the load which then adds the repo to the manager's list
 			} catch (ProvisionException ex) {
 				repository = Activator.loadArtifactRepository(repoURL, null);
 			}
 			artifactRepositories.add(repository);
 		} catch (ProvisionException ex) {
 			LogHelper.log(ex);
 		}
 	}

 	public void stopPoll() {
 		synchronizeDropinMetadataRepositories();
 		synchronizeDropinArtifactRepositories();
 		super.stopPoll();
 	}

 	private void synchronizeDropinMetadataRepositories() {
 		List currentRepositories = new ArrayList();
 		for (Iterator it = metadataRepositories.iterator(); it.hasNext();) {
 			IMetadataRepository repository = (IMetadataRepository) it.next();
 			String urlString = repository.getLocation().toExternalForm();
 			currentRepositories.add(urlString);
 		}
 		List previousRepositories = getListRepositoryProperty(getMetadataRepository(), DROPIN_METADATA_REPOSITORIES);
 		for (Iterator iterator = previousRepositories.iterator(); iterator.hasNext();) {
 			String repository = (String) iterator.next();
 			if (!currentRepositories.contains(repository))
 				removeMetadataRepository(repository);
 		}
 		setListRepositoryProperty(getMetadataRepository(), DROPIN_METADATA_REPOSITORIES, currentRepositories);
 	}

 	private void removeMetadataRepository(String urlString) {
 		ServiceReference reference = context.getServiceReference(IMetadataRepositoryManager.class.getName());
 		IMetadataRepositoryManager manager = null;
 		if (reference != null)
 			manager = (IMetadataRepositoryManager) context.getService(reference);
 		if (manager == null)
 			throw new IllegalStateException(Messages.metadata_repo_manager_not_registered);

 		try {
 			manager.removeRepository(new URL(urlString));
 		} catch (MalformedURLException e) {
 			LogHelper.log(new Status(IStatus.ERROR, Activator.ID, "Error occurred while creating URL from: " + urlString, e)); //$NON-NLS-1$
 		} finally {
 			context.ungetService(reference);
 		}
 	}

 	private void synchronizeDropinArtifactRepositories() {
 		List currentRepositories = new ArrayList();
 		for (Iterator it = artifactRepositories.iterator(); it.hasNext();) {
 			IArtifactRepository repository = (IArtifactRepository) it.next();
 			String urlString = repository.getLocation().toExternalForm();
 			currentRepositories.add(urlString);
 		}
 		List previousRepositories = getListRepositoryProperty(getArtifactRepository(), DROPIN_ARTIFACT_REPOSITORIES);
 		for (Iterator iterator = previousRepositories.iterator(); iterator.hasNext();) {
 			String repository = (String) iterator.next();
 			if (!currentRepositories.contains(repository))
 				removeArtifactRepository(repository);
 		}
 		setListRepositoryProperty(getArtifactRepository(), DROPIN_ARTIFACT_REPOSITORIES, currentRepositories);
 	}

 	public void removeArtifactRepository(String urlString) {
 		ServiceReference reference = context.getServiceReference(IArtifactRepositoryManager.class.getName());
 		IArtifactRepositoryManager manager = null;
 		if (reference != null)
 			manager = (IArtifactRepositoryManager) context.getService(reference);
 		if (manager == null)
 			throw new IllegalStateException(Messages.artifact_repo_manager_not_registered);

 		try {
 			manager.removeRepository(new URL(urlString));
 		} catch (MalformedURLException e) {
 			LogHelper.log(new Status(IStatus.ERROR, Activator.ID, "Error occurred while creating URL from: " + urlString, e)); //$NON-NLS-1$
 		} finally {
 			context.ungetService(reference);
 		}
 	}

 	private List getListRepositoryProperty(IRepository repository, String key) {
 		List listProperty = new ArrayList();
 		String dropinRepositories = (String) repository.getProperties().get(key);
 		if (dropinRepositories != null) {
 			StringTokenizer tokenizer = new StringTokenizer(dropinRepositories, PIPE);
 			while (tokenizer.hasMoreTokens()) {
 				listProperty.add(tokenizer.nextToken());
 			}
 		}
 		return listProperty;
 	}

 	private void setListRepositoryProperty(IRepository repository, String key, List listProperty) {
 		StringBuffer buffer = new StringBuffer();
 		for (Iterator it = listProperty.iterator(); it.hasNext();) {
 			String repositoryString = (String) it.next();
 			buffer.append(repositoryString);
 			if (it.hasNext())
 				buffer.append(PIPE);
 		}
 		String value = (buffer.length() == 0) ? null : buffer.toString();
 		repository.setProperty(key, value);
 	}

 	public Collection getMetadataRepositories() {
 		List result = new ArrayList(metadataRepositories);
 		result.add(getMetadataRepository());
 		return result;
 	}

 }
	/*******************************************************************************
	* 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.reconciler.dropins;

	import java.io.*;
	import java.net.MalformedURLException;
	import java.net.URL;
	import java.util.*;
	import org.eclipse.core.runtime.IStatus;
	import org.eclipse.core.runtime.Status;
	import org.eclipse.equinox.internal.p2.core.helpers.LogHelper;
	import org.eclipse.equinox.internal.p2.extensionlocation.ExtensionLocationArtifactRepository;
	import org.eclipse.equinox.internal.p2.extensionlocation.ExtensionLocationMetadataRepository;
	import org.eclipse.equinox.internal.provisional.p2.artifact.repository.IArtifactRepository;
	import org.eclipse.equinox.internal.provisional.p2.artifact.repository.IArtifactRepositoryManager;
	import org.eclipse.equinox.internal.provisional.p2.core.ProvisionException;
	import org.eclipse.equinox.internal.provisional.p2.core.repository.IRepository;
	import org.eclipse.equinox.internal.provisional.p2.directorywatcher.RepositoryListener;
	import org.eclipse.equinox.internal.provisional.p2.metadata.repository.IMetadataRepository;
	import org.eclipse.equinox.internal.provisional.p2.metadata.repository.IMetadataRepositoryManager;
	import org.osgi.framework.BundleContext;
	import org.osgi.framework.ServiceReference;

	public class DropinsRepositoryListener extends RepositoryListener {

	private static final String PLUGINS = "plugins"; //$NON-NLS-1$
	private static final String FEATURES = "features"; //$NON-NLS-1$
	private static final String JAR = ".jar"; //$NON-NLS-1$
	private static final String LINK = ".link"; //$NON-NLS-1$
	private static final String ZIP = ".zip"; //$NON-NLS-1$
	private static final String LINKS_PATH = "path"; //$NON-NLS-1$
	private static final String DROPIN_ARTIFACT_REPOSITORIES = "dropin.artifactRepositories"; //$NON-NLS-1$
	private static final String DROPIN_METADATA_REPOSITORIES = "dropin.metadataRepositories"; //$NON-NLS-1$
	private static final String PIPE = "\|"; //$NON-NLS-1$
	private BundleContext context;
	private List metadataRepositories = new ArrayList();
	private List artifactRepositories = new ArrayList();

	public DropinsRepositoryListener(BundleContext context, String repositoryName) {
	super(context, repositoryName, null, true);
	this.context = context;
	}

	public boolean isInterested(File file) {
	return true;
	}

	public boolean added(File file) {
	if (super.added(file))
	return true;

	URL repositoryURL = createRepositoryURL(file);
	if (repositoryURL != null) {
	getMetadataRepository(repositoryURL);
	getArtifactRepository(repositoryURL);
	}
	return true;
	}

	public boolean changed(File file) {
	if (super.changed(file))
	return true;

	URL repositoryURL = createRepositoryURL(file);
	if (repositoryURL != null) {
	getMetadataRepository(repositoryURL);
	getArtifactRepository(repositoryURL);
	}
	return true;
	}

	private String getLinkPath(File file) {
	Properties links = new Properties();
	try {
	InputStream input = new BufferedInputStream(new FileInputStream(file));
	try {
	links.load(input);
	} finally {
	input.close();
	}
	} catch (IOException e) {
	// ignore
	}
	String path = links.getProperty(LINKS_PATH);
	if (path == null) {
	// log
	return null;
	}

	// parse out link information
	if (path.startsWith("r ")) { //$NON-NLS-1$
	path = path.substring(2).trim();
	} else if (path.startsWith("rw ")) { //$NON-NLS-1$
	path = path.substring(3).trim();
	} else {
	path = path.trim();
	}
	return path;
	}

	private URL createRepositoryURL(File file) {
	try {
	file = file.getCanonicalFile();
	String fileName = file.getName();
	if (fileName.endsWith(LINK))
	return getLinkRepository(file, true);

	if (file.isDirectory()) {
	// Check if the directory is either the plugins directory of an extension location
	// or the features directory and the plugins folder is not present.
	// This extra check on the features directory is done to avoid adding the parent URL twice
	if (file.getName().equals(PLUGINS)) {
	File parentFile = file.getParentFile();
	return (parentFile != null) ? parentFile.toURL() : null;
	}
	if (file.getName().equals(FEATURES)) {
	File parentFile = file.getParentFile();
	if (parentFile == null \|\| new File(parentFile, PLUGINS).isDirectory())
	return null;
	return parentFile.toURL();
	}
	return file.toURL();
	}

	if (fileName.endsWith(ZIP) \|\| fileName.endsWith(JAR))
	return new URL("jar:" + file.toURL().toExternalForm() + "!/"); //$NON-NLS-1$ //$NON-NLS-2$

	// last resort -- we'll try to interpret the file as a link
	return getLinkRepository(file, false);
	} catch (IOException e) {
	LogHelper.log(new Status(IStatus.ERROR, Activator.ID, "Error occurred while building repository location from file: " + file.getAbsolutePath(), e)); //$NON-NLS-1$
	}
	return null;
	}

	private URL getLinkRepository(File file, boolean logMissingLink) throws IOException {
	String path = getLinkPath(file);
	if (path == null) {
	if (logMissingLink)
	LogHelper.log(new Status(IStatus.ERROR, Activator.ID, "Unable to determine link location from file: " + file.getAbsolutePath())); //$NON-NLS-1$
	return null;
	}
	File linkedFile = new File(path);
	if (!linkedFile.isAbsolute()) {
	// link support is relative to the install root
	File root = Activator.getEclipseHome();
	if (root != null)
	linkedFile = new File(root, path);
	}
	File canonicalFile = linkedFile.getCanonicalFile();
	return canonicalFile.toURL();
	}

	public void getMetadataRepository(URL repoURL) {
	try {
	IMetadataRepository repository = null;
	try {
	ExtensionLocationMetadataRepository.validate(repoURL, null);
	Map properties = new HashMap();
	properties.put(IRepository.PROP_SYSTEM, Boolean.TRUE.toString());
	repository = Activator.createExtensionLocationMetadataRepository(repoURL, "dropins metadata repo: " + repoURL.toExternalForm(), properties); //$NON-NLS-1$
	} catch (ProvisionException e) {
	repository = Activator.loadMetadataRepository(repoURL, null);
	}
	metadataRepositories.add(repository);
	} catch (ProvisionException ex) {
	LogHelper.log(ex);
	}
	}

	public void getArtifactRepository(URL repoURL) {
	try {
	IArtifactRepository repository = null;
	try {
	ExtensionLocationArtifactRepository.validate(repoURL, null);
	Map properties = new HashMap();
	properties.put(IRepository.PROP_SYSTEM, Boolean.TRUE.toString());
	repository = Activator.createExtensionLocationArtifactRepository(repoURL, "dropins artifact repo: " + repoURL.toExternalForm(), properties); //$NON-NLS-1$
	// fall through here and call the load which then adds the repo to the manager's list
	} catch (ProvisionException ex) {
	repository = Activator.loadArtifactRepository(repoURL, null);
	}
	artifactRepositories.add(repository);
	} catch (ProvisionException ex) {
	LogHelper.log(ex);
	}
	}

	public void stopPoll() {
	synchronizeDropinMetadataRepositories();
	synchronizeDropinArtifactRepositories();
	super.stopPoll();
	}

	private void synchronizeDropinMetadataRepositories() {
	List currentRepositories = new ArrayList();
	for (Iterator it = metadataRepositories.iterator(); it.hasNext();) {
	IMetadataRepository repository = (IMetadataRepository) it.next();
	String urlString = repository.getLocation().toExternalForm();
	currentRepositories.add(urlString);
	}
	List previousRepositories = getListRepositoryProperty(getMetadataRepository(), DROPIN_METADATA_REPOSITORIES);
	for (Iterator iterator = previousRepositories.iterator(); iterator.hasNext();) {
	String repository = (String) iterator.next();
	if (!currentRepositories.contains(repository))
	removeMetadataRepository(repository);
	}
	setListRepositoryProperty(getMetadataRepository(), DROPIN_METADATA_REPOSITORIES, currentRepositories);
	}

	private void removeMetadataRepository(String urlString) {
	ServiceReference reference = context.getServiceReference(IMetadataRepositoryManager.class.getName());
	IMetadataRepositoryManager manager = null;
	if (reference != null)
	manager = (IMetadataRepositoryManager) context.getService(reference);
	if (manager == null)
	throw new IllegalStateException(Messages.metadata_repo_manager_not_registered);

	try {
	manager.removeRepository(new URL(urlString));
	} catch (MalformedURLException e) {
	LogHelper.log(new Status(IStatus.ERROR, Activator.ID, "Error occurred while creating URL from: " + urlString, e)); //$NON-NLS-1$
	} finally {
	context.ungetService(reference);
	}
	}

	private void synchronizeDropinArtifactRepositories() {
	List currentRepositories = new ArrayList();
	for (Iterator it = artifactRepositories.iterator(); it.hasNext();) {
	IArtifactRepository repository = (IArtifactRepository) it.next();
	String urlString = repository.getLocation().toExternalForm();
	currentRepositories.add(urlString);
	}
	List previousRepositories = getListRepositoryProperty(getArtifactRepository(), DROPIN_ARTIFACT_REPOSITORIES);
	for (Iterator iterator = previousRepositories.iterator(); iterator.hasNext();) {
	String repository = (String) iterator.next();
	if (!currentRepositories.contains(repository))
	removeArtifactRepository(repository);
	}
	setListRepositoryProperty(getArtifactRepository(), DROPIN_ARTIFACT_REPOSITORIES, currentRepositories);
	}

	public void removeArtifactRepository(String urlString) {
	ServiceReference reference = context.getServiceReference(IArtifactRepositoryManager.class.getName());
	IArtifactRepositoryManager manager = null;
	if (reference != null)
	manager = (IArtifactRepositoryManager) context.getService(reference);
	if (manager == null)
	throw new IllegalStateException(Messages.artifact_repo_manager_not_registered);

	try {
	manager.removeRepository(new URL(urlString));
	} catch (MalformedURLException e) {
	LogHelper.log(new Status(IStatus.ERROR, Activator.ID, "Error occurred while creating URL from: " + urlString, e)); //$NON-NLS-1$
	} finally {
	context.ungetService(reference);
	}
	}

	private List getListRepositoryProperty(IRepository repository, String key) {
	List listProperty = new ArrayList();
	String dropinRepositories = (String) repository.getProperties().get(key);
	if (dropinRepositories != null) {
	StringTokenizer tokenizer = new StringTokenizer(dropinRepositories, PIPE);
	while (tokenizer.hasMoreTokens()) {
	listProperty.add(tokenizer.nextToken());
	}
	}
	return listProperty;
	}

	private void setListRepositoryProperty(IRepository repository, String key, List listProperty) {
	StringBuffer buffer = new StringBuffer();
	for (Iterator it = listProperty.iterator(); it.hasNext();) {
	String repositoryString = (String) it.next();
	buffer.append(repositoryString);
	if (it.hasNext())
	buffer.append(PIPE);
	}
	String value = (buffer.length() == 0) ? null : buffer.toString();
	repository.setProperty(key, value);
	}

	public Collection getMetadataRepositories() {
	List result = new ArrayList(metadataRepositories);
	result.add(getMetadataRepository());
	return result;
	}

	}