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Copyright (c) 2008-2012 Vrije Universiteit, The Netherlands All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the follo...
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/* * Copyright (c) 2008-2012 Vrije Universiteit, The Netherlands All rights * reserved.//from w w w .j a v a 2 s .co m * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * Redistributions of source code must retain the above copyright notice, this * list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * Neither the name of the Vrije Universiteit nor the names of its contributors * may be used to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ package interdroid.vdb.transport; import ibis.smartsockets.SmartSocketsProperties; import ibis.smartsockets.naming.NameResolver; import ibis.smartsockets.util.MalformedAddressException; import ibis.smartsockets.virtual.InitializationException; import ibis.smartsockets.virtual.VirtualSocket; import ibis.smartsockets.virtual.VirtualSocketAddress; import interdroid.vdb.content.VdbProviderRegistry; import java.io.BufferedInputStream; import java.io.BufferedOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.net.URISyntaxException; import java.util.ArrayList; import java.util.Collections; import java.util.EnumSet; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.Properties; import java.util.Set; import org.eclipse.jgit.errors.NotSupportedException; import org.eclipse.jgit.errors.TransportException; import org.eclipse.jgit.internal.JGitText; import org.eclipse.jgit.lib.Repository; import org.eclipse.jgit.transport.BasePackFetchConnection; import org.eclipse.jgit.transport.BasePackPushConnection; import org.eclipse.jgit.transport.FetchConnection; import org.eclipse.jgit.transport.PackTransport; import org.eclipse.jgit.transport.PacketLineIn; import org.eclipse.jgit.transport.PacketLineOut; import org.eclipse.jgit.transport.PushConnection; import org.eclipse.jgit.transport.TcpTransport; import org.eclipse.jgit.transport.Transport; import org.eclipse.jgit.transport.TransportProtocol; import org.eclipse.jgit.transport.URIish; import org.slf4j.Logger; import org.slf4j.LoggerFactory; /** * A jGit TcpTransport built on top of SmartSockets. * * @author nick <palmer@cs.vu.nl> * */ public class SmartSocketsTransport extends TcpTransport implements PackTransport { /** * Access to logger. */ private static final Logger LOG = LoggerFactory .getLogger(SmartSocketsTransport.class); /** * The scheme used by this transport. */ public static final String SMARTSOCKETS_TRANSPORT_SCHEME = "ss"; /** * The port smartsockets works on. */ private static final int SMARTSOCKETS_PORT = 9090; /** * The properties for the smart sockets subsystem. */ private static Properties sSocketProperties = new Properties(); static { sSocketProperties.put(SmartSocketsProperties.DIRECT_CACHE_IP, "false"); sSocketProperties.put(SmartSocketsProperties.START_HUB, "true"); } /** * The protocol used to speak over this transport. */ public static final TransportProtocol PROTO = new TransportProtocol() { public String getName() { return "Smart Sockets"; } public Set<String> getSchemes() { return Collections.singleton( SMARTSOCKETS_TRANSPORT_SCHEME); //$NON-NLS-1$ } public Set<URIishField> getRequiredFields() { return Collections.unmodifiableSet( EnumSet.of(URIishField.HOST, URIishField.USER, URIishField.PATH)); } public Set<URIishField> getOptionalFields() { return Collections.unmodifiableSet(EnumSet.of(URIishField.PORT)); } public int getDefaultPort() { return SMARTSOCKETS_PORT; } public Transport open(final URIish uri, final Repository local, final String remoteName) throws NotSupportedException { return new SmartSocketsTransport(local, uri); } }; /** The real name of the user. */ public static final String REAL_NAME = "name"; /** The email of the user. */ public static final String EMAIL = "email"; // TODO: This should come from a property or something /** The timeout for connections. */ private static final int TIMEOUT = 1000 * 30; /** * Construct a transport for the given repository and URI. * @param local the local repository * @param uri the uri to transport with */ protected SmartSocketsTransport(final Repository local, final URIish uri) { super(local, uri); } /** * Construct a transport for the given URI. * @param uri the uri to transport with */ public SmartSocketsTransport(final URIish uri) { super(null, uri); } @Override public final FetchConnection openFetch() throws TransportException { try { return new SmartSocketsFetchConnection(); } catch (Exception e) { throw new TransportException(uri, "Unable to open socket.", e); } } @Override public final PushConnection openPush() throws TransportException { try { return new SmartSocketsPushConnection(); } catch (Exception e) { throw new TransportException(uri, "Unable to open socket.", e); } } @Override public void close() { // TODO: Unregister our endpoint with smartsockets? } /** * Open a connection to the given URI with the given timeout. * @param uri the uri to open * @param timeout the timeout for the operation * @return a VirtualSocket connected to the requested URI * @throws IOException if reading, writing or address resolution fails * @throws InitializationException if we are unable to initialize */ static VirtualSocket openConnection(final URIish uri, final int timeout) throws IOException, InitializationException { LOG.debug("Opening connection to: {} {}", uri, timeout); LOG.debug("Resolving: {}@{}", uri.getUser(), uri.getHost()); NameResolver resolver = getResolver(); VirtualSocketAddress otherSide = resolver.resolve( uri.getUser() + "@" + uri.getHost(), timeout); LOG.debug("Other side is: {}", otherSide); if (otherSide == null) { throw new IOException("Unable to resolve host: " + uri.getUser() + "@" + uri.getHost()); } VirtualSocket s = resolver.getSocketFactory() .createClientSocket(otherSide, timeout, null); return s; } /** * Request the given service. * @param name the name of the service to connect * @param pckOut the packet line out to send with * @throws IOException if reading or writing fails. */ final void service(final String name, final PacketLineOut pckOut) throws IOException { final StringBuilder cmd = new StringBuilder(); cmd.append(name); cmd.append(' '); cmd.append(uri.getPath()); cmd.append('\0'); cmd.append("host="); cmd.append(uri.getHost()); cmd.append("user="); cmd.append(uri.getHost()); if (uri.getPort() > 0 && uri.getPort() != SMARTSOCKETS_PORT) { cmd.append(':'); cmd.append(uri.getPort()); } cmd.append('\0'); pckOut.writeString(cmd.toString()); pckOut.flush(); } /** * The connection used to fetch packets from another host. * @author nick <palmer@cs.vu.nl> * */ final class SmartSocketsFetchConnection extends BasePackFetchConnection { /** The socket the connection talks over. */ private VirtualSocket sock; /** * Construct a new connection. * @throws IOException if reading or writing fails * @throws InitializationException if we fail to initialize */ SmartSocketsFetchConnection() throws IOException, InitializationException { super(SmartSocketsTransport.this); sock = openConnection(uri, getTimeout()); try { InputStream sIn = sock.getInputStream(); OutputStream sOut = sock.getOutputStream(); sIn = new BufferedInputStream(sIn); sOut = new BufferedOutputStream(sOut); init(sIn, sOut); service("git-upload-pack", pckOut); } catch (IOException err) { close(); throw new TransportException(uri, JGitText.get().remoteHungUpUnexpectedly, err); } readAdvertisedRefs(); } @Override public void close() { super.close(); if (sock != null) { try { sock.close(); } catch (IOException err) { LOG.warn("Exception while closing.", err); } finally { sock = null; } } } } /** * The connection used to push packs to another client. * @author nick <palmer@cs.vu.nl> * */ class SmartSocketsPushConnection extends BasePackPushConnection { /** The virtual socket the connection talks over. */ private VirtualSocket sock; /** * Construct a push connection. * @throws IOException if reading or writing * @throws InitializationException if initialization fails */ SmartSocketsPushConnection() throws IOException, InitializationException { super(SmartSocketsTransport.this); sock = openConnection(uri, getTimeout()); try { InputStream sIn = sock.getInputStream(); OutputStream sOut = sock.getOutputStream(); sIn = new BufferedInputStream(sIn); sOut = new BufferedOutputStream(sOut); init(sIn, sOut); service("git-receive-pack", pckOut); } catch (IOException err) { close(); throw new TransportException(uri, JGitText.get().remoteHungUpUnexpectedly, err); } readAdvertisedRefs(); } @Override public void close() { super.close(); if (sock != null) { try { sock.close(); } catch (IOException err) { LOG.warn("Exception while closing.", err); } finally { sock = null; } } } } /** * @param localEmail the local email address * @param remoteEmail the remote email address * @return the list of local repositories visible to the remote user. * @throws IOException if reading or writing fails * @throws InitializationException if we fail to initialize */ public static List<Map<String, Object>> getRepositories( final String localEmail, final String remoteEmail) throws IOException, InitializationException { List<Map<String, Object>> repositories = null; URIish uri; LOG.debug("Getting repositories from: " + remoteEmail); try { uri = new URIish(SMARTSOCKETS_TRANSPORT_SCHEME + "://" + remoteEmail + "/"); } catch (URISyntaxException e) { throw new MalformedAddressException(e); } VirtualSocket socket = openConnection(uri, TIMEOUT); socket.setSoTimeout(TIMEOUT); PacketLineOut out = null; PacketLineIn in = null; try { LOG.debug("Sending Command."); out = new PacketLineOut(socket.getOutputStream()); out.writeString("git-list-repos " + localEmail); repositories = new ArrayList<Map<String, Object>>(); LOG.debug("Reading result."); in = new PacketLineIn(socket.getInputStream()); for (String repository = in.readString(); !repository.equals(PacketLineIn.END); repository = in.readString()) { LOG.debug("Read repository: {}", repository); Map<String, Object> repoInfo = new HashMap<String, Object>(); repoInfo.put(VdbProviderRegistry.REPOSITORY_NAME, repository); repoInfo.put(VdbProviderRegistry.REPOSITORY_IS_PEER, Boolean.valueOf(in.readString())); repoInfo.put(VdbProviderRegistry.REPOSITORY_IS_PUBLIC, Boolean.valueOf(in.readString())); repositories.add(repoInfo); } } finally { if (in != null) { socket.getInputStream().close(); } if (out != null) { socket.getOutputStream().close(); } socket.close(); } LOG.debug("Done fetching repositories."); return repositories; } /** * @return the name resolver used by the transport * @throws InitializationException if the name resolver fails to initialize */ public static NameResolver getResolver() throws InitializationException { return NameResolver.getOrCreateResolver( SMARTSOCKETS_TRANSPORT_SCHEME, sSocketProperties, true); } /** * Add a hub to the transport. * @param hub the hub addresses to be added * @throws InitializationException if smartsockets fails to initialize. */ public static void addHub(final String... hub) throws InitializationException { getResolver().addHub(hub); } }