tikhomirov@660: /*
tikhomirov@660:  * Copyright (c) 2013 TMate Software Ltd
tikhomirov@660:  *  
tikhomirov@660:  * This program is free software; you can redistribute it and/or modify
tikhomirov@660:  * it under the terms of the GNU General Public License as published by
tikhomirov@660:  * the Free Software Foundation; version 2 of the License.
tikhomirov@660:  *
tikhomirov@660:  * This program is distributed in the hope that it will be useful,
tikhomirov@660:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
tikhomirov@660:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
tikhomirov@660:  * GNU General Public License for more details.
tikhomirov@660:  *
tikhomirov@660:  * For information on how to redistribute this software under
tikhomirov@660:  * the terms of a license other than GNU General Public License
tikhomirov@660:  * contact TMate Software at support@hg4j.com
tikhomirov@660:  */
tikhomirov@660: package org.tmatesoft.hg.core;
tikhomirov@660: 
tikhomirov@663: import java.util.Collection;
tikhomirov@663: import java.util.Collections;
tikhomirov@660: import java.util.List;
tikhomirov@660: 
tikhomirov@660: import org.tmatesoft.hg.internal.AddRevInspector;
tikhomirov@660: import org.tmatesoft.hg.internal.COWTransaction;
tikhomirov@660: import org.tmatesoft.hg.internal.Internals;
tikhomirov@660: import org.tmatesoft.hg.internal.PhasesHelper;
tikhomirov@660: import org.tmatesoft.hg.internal.RepositoryComparator;
tikhomirov@660: import org.tmatesoft.hg.internal.RevisionSet;
tikhomirov@660: import org.tmatesoft.hg.internal.Transaction;
tikhomirov@660: import org.tmatesoft.hg.repo.HgBundle;
tikhomirov@660: import org.tmatesoft.hg.repo.HgChangelog;
tikhomirov@660: import org.tmatesoft.hg.repo.HgInternals;
tikhomirov@660: import org.tmatesoft.hg.repo.HgParentChildMap;
tikhomirov@660: import org.tmatesoft.hg.repo.HgRemoteRepository;
tikhomirov@660: import org.tmatesoft.hg.repo.HgRepository;
tikhomirov@660: import org.tmatesoft.hg.repo.HgRuntimeException;
tikhomirov@660: import org.tmatesoft.hg.util.CancelledException;
tikhomirov@660: import org.tmatesoft.hg.util.ProgressSupport;
tikhomirov@660: 
tikhomirov@660: /**
tikhomirov@664:  * 'hg pull <remote>' counterpart, get remote changes to local repository
tikhomirov@660:  * 
tikhomirov@664:  * @since 1.2
tikhomirov@660:  * @author Artem Tikhomirov
tikhomirov@660:  * @author TMate Software Ltd.
tikhomirov@660:  */
tikhomirov@660: public class HgPullCommand extends HgAbstractCommand<HgPullCommand> {
tikhomirov@660: 
tikhomirov@660: 	private final HgRepository repo;
tikhomirov@660: 	private HgRemoteRepository remote;
tikhomirov@663: 	private RevisionSet added;
tikhomirov@660: 
tikhomirov@660: 	public HgPullCommand(HgRepository hgRepo) {
tikhomirov@660: 		repo = hgRepo;
tikhomirov@660: 	}
tikhomirov@660: 
tikhomirov@660: 	public HgPullCommand source(HgRemoteRepository hgRemote) {
tikhomirov@660: 		remote = hgRemote;
tikhomirov@660: 		return this;
tikhomirov@660: 	}
tikhomirov@660: 
tikhomirov@660: 	public void execute() throws HgRemoteConnectionException, HgIOException, HgLibraryFailureException, CancelledException {
tikhomirov@660: 		final ProgressSupport progress = getProgressSupport(null);
tikhomirov@660: 		try {
tikhomirov@660: 			progress.start(100);
tikhomirov@660: 			// TODO refactor same code in HgIncomingCommand #getComparator and #getParentHelper
tikhomirov@660: 			final HgChangelog clog = repo.getChangelog();
tikhomirov@660: 			final HgParentChildMap<HgChangelog> parentHelper = new HgParentChildMap<HgChangelog>(clog);
tikhomirov@660: 			parentHelper.init();
tikhomirov@660: 			final RepositoryComparator comparator = new RepositoryComparator(parentHelper, remote);
tikhomirov@660: 			// get incoming revisions
tikhomirov@660: 			comparator.compare(new ProgressSupport.Sub(progress, 50), getCancelSupport(null, true));
tikhomirov@660: 			final List<Nodeid> common = comparator.getCommon();
tikhomirov@660: 			// get bundle with changes from remote
tikhomirov@660: 			HgBundle incoming = remote.getChanges(common);
tikhomirov@660: 			//
tikhomirov@660: 			// add revisions to changelog, manifest, files
tikhomirov@660: 			final Internals implRepo = HgInternals.getImplementationRepo(repo);
tikhomirov@660: 			final AddRevInspector insp;
tikhomirov@660: 			Transaction.Factory trFactory = new COWTransaction.Factory();
tikhomirov@660: 			Transaction tr = trFactory.create(repo);
tikhomirov@660: 			try {
tikhomirov@660: 				incoming.inspectAll(insp = new AddRevInspector(implRepo, tr));
tikhomirov@663: 				insp.done();
tikhomirov@660: 				tr.commit();
tikhomirov@660: 			} catch (HgRuntimeException ex) {
tikhomirov@660: 				tr.rollback();
tikhomirov@660: 				throw ex;
tikhomirov@664: 			} catch (HgIOException ex) {
tikhomirov@663: 				tr.rollback();
tikhomirov@664: 				throw ex;
tikhomirov@660: 			} catch (RuntimeException ex) {
tikhomirov@660: 				tr.rollback();
tikhomirov@660: 				throw ex;
tikhomirov@660: 			}
tikhomirov@660: 			progress.worked(45);
tikhomirov@663: 			added = insp.addedChangesets();
tikhomirov@660: 			
tikhomirov@663: 			if (!added.isEmpty()) {
tikhomirov@663: 				// FIXME refresh parentHelper with newly added revisions in effective way
tikhomirov@663: 				parentHelper.init(); 
tikhomirov@663: 			}
tikhomirov@660: 			// get remote phases, update local phases to match that of remote
tikhomirov@663: 			// do not update any remote phase (it's pull, after all)
tikhomirov@660: 			final PhasesHelper phaseHelper = new PhasesHelper(implRepo, parentHelper);
tikhomirov@660: 			if (phaseHelper.isCapableOfPhases()) {
tikhomirov@660: 				RevisionSet rsCommon = new RevisionSet(common);
tikhomirov@660: 				HgRemoteRepository.Phases remotePhases = remote.getPhases();
tikhomirov@663: 				phaseHelper.synchronizeWithRemote(remotePhases, rsCommon.union(added));
tikhomirov@660: 			}
tikhomirov@660: 			progress.worked(5);
tikhomirov@660: 		} catch (HgRuntimeException ex) {
tikhomirov@660: 			throw new HgLibraryFailureException(ex);
tikhomirov@660: 		} finally {
tikhomirov@660: 			progress.done();
tikhomirov@660: 		}
tikhomirov@660: 	}
tikhomirov@663: 	
tikhomirov@663: 	public Collection<Nodeid> getPulledRevisions() {
tikhomirov@663: 		return added == null ? Collections.<Nodeid>emptyList() : added.asList();
tikhomirov@663: 	}
tikhomirov@660: }