Example usage for org.eclipse.jgit.transport TransportBundle V2_BUNDLE_SIGNATURE

Introduction

In this page you can find the example usage for org.eclipse.jgit.transport TransportBundle V2_BUNDLE_SIGNATURE.

Prototype

String V2_BUNDLE_SIGNATURE

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Document

Bundle signature

Usage

From source file:com.surevine.gateway.scm.git.jgit.BundleWriter.java

License:Eclipse Distribution License

/**
 * Generate and write the bundle to the output stream.
 * <p>//  ww  w.  j av  a2  s  .  c o m
 * This method can only be called once per BundleWriter instance.
 *
 * @param monitor
 *            progress monitor to report bundle writing status to.
 * @param os
 *            the stream the bundle is written to. The stream should be
 *            buffered by the caller. The caller is responsible for closing
 *            the stream.
 * @throws IOException
 *             an error occurred reading a local object's data to include in
 *             the bundle, or writing compressed object data to the output
 *             stream.
 */
public void writeBundle(ProgressMonitor monitor, OutputStream os) throws IOException {
    PackConfig pc = packConfig;
    if (pc == null)
        pc = new PackConfig(db);
    PackWriter packWriter = new PackWriter(pc, db.newObjectReader());
    try {
        final HashSet<ObjectId> inc = new HashSet<ObjectId>();
        final HashSet<ObjectId> exc = new HashSet<ObjectId>();
        inc.addAll(include.values());
        for (final RevCommit r : assume)
            exc.add(r.getId());
        packWriter.setIndexDisabled(true);
        packWriter.setDeltaBaseAsOffset(true);
        packWriter.setThin(exc.size() > 0);
        packWriter.setReuseValidatingObjects(false);
        if (exc.size() == 0)
            packWriter.setTagTargets(tagTargets);
        packWriter.preparePack(monitor, inc, exc);

        final Writer w = new OutputStreamWriter(os, Constants.CHARSET);
        w.write(TransportBundle.V2_BUNDLE_SIGNATURE);
        w.write('\n');

        final char[] tmp = new char[Constants.OBJECT_ID_STRING_LENGTH];
        for (final RevCommit a : assume) {
            w.write('-');
            a.copyTo(tmp, w);
            if (a.getRawBuffer() != null) {
                w.write(' ');
                w.write(a.getShortMessage());
            }
            w.write('\n');
        }
        for (final Map.Entry<String, ObjectId> e : include.entrySet()) {
            e.getValue().copyTo(tmp, w);
            w.write(' ');
            w.write(e.getKey());
            w.write('\n');
        }

        w.write('\n');
        w.flush();
        packWriter.writePack(monitor, monitor, os);
    } finally {
        packWriter.release();
    }
}

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