GitFetchService.java

/*
 * Copyright (c) 2011, 2012 Roberto Tyley
 *
 * This file is part of 'Agit' - an Android Git client.
 *
 * Agit is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Agit is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see http://www.gnu.org/licenses/ .
 */

package com.madgag.agit;

import static com.google.common.collect.Lists.newArrayList;
import static com.madgag.agit.operations.JGitAPIExceptions.exceptionWithFriendlyMessageFor;
import android.util.Log;

import com.google.inject.Inject;
import com.madgag.agit.guice.OperationScoped;
import com.madgag.agit.operations.MessagingProgressMonitor;
import com.madgag.agit.operations.RepoUpdateBroadcaster;

import java.util.Collection;
import java.util.Collections;
import java.util.Map;

import org.eclipse.jgit.api.Git;
import org.eclipse.jgit.api.TransportConfigCallback;
import org.eclipse.jgit.api.errors.GitAPIException;
import org.eclipse.jgit.lib.Ref;
import org.eclipse.jgit.transport.CredentialsProvider;
import org.eclipse.jgit.transport.FetchResult;
import org.eclipse.jgit.transport.RefSpec;
import org.eclipse.jgit.transport.TrackingRefUpdate;

@OperationScoped
public class GitFetchService {

    private static String TAG = "GFS";

    @Inject
    Git git;
    @Inject
    MessagingProgressMonitor messagingProgressMonitor;
    @Inject
    CredentialsProvider credentialsProvider;
    @Inject
    TransportConfigCallback transportConfigCallback;
    @Inject
    RepoUpdateBroadcaster repoUpdateBroadcaster;

    public FetchResult fetch(String remote, Collection<RefSpec> toFetch) {
        Log.d(TAG, "About to run fetch : " + remote);

        for (Map.Entry<String,Ref> entry : git.getRepository().getAllRefs().entrySet()) {
            Log.d(TAG, entry.getKey()+" = "+entry.getValue());
        }
        FetchResult fetchResult = null;
        try {
            fetchResult = git.fetch()
                    .setRemote(remote)
                    .setRefSpecs(toFetch == null ? Collections.<RefSpec>emptyList() : newArrayList(toFetch))
                    .setProgressMonitor(messagingProgressMonitor)
                    .setTransportConfigCallback(transportConfigCallback)
                    .setCredentialsProvider(credentialsProvider)
                    .call();
        } catch (GitAPIException e) {
            throw exceptionWithFriendlyMessageFor(e);
        }
        Log.d(TAG, "Fetch complete with : " + fetchResult+" messages="+fetchResult.getMessages());
        for (Ref ref : fetchResult.getAdvertisedRefs()) {
            Log.d(TAG, "AdvertisedRef : " + ref.getName()+" objectId="+ref.getObjectId());
        }
        for (TrackingRefUpdate update : fetchResult.getTrackingRefUpdates()) {
            Log.d(TAG, "TrackingRefUpdate : " + update.getLocalName() + " old=" + update.getOldObjectId() + " new=" + update.getNewObjectId());
        }
        repoUpdateBroadcaster.broadcastUpdate();
        return fetchResult;
    }

}