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/*
* Copyright (C) 2008-2009, Google Inc.
* Copyright (C) 2008, Mike Ralphson <mike@abacus.co.uk>
* Copyright (C) 2008, Robin Rosenberg <robin.rosenberg@dewire.com>
* and other copyright owners as documented in the project's IP log.
*
* This program and the accompanying materials are made available
* under the terms of the Eclipse Distribution License v1.0 which
* accompanies this distribution, is reproduced below, and is
* available at http://www.eclipse.org/org/documents/edl-v10.php
*
* All rights reserved.
*
* 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 Eclipse Foundation, Inc. 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 org.eclipse.jgit.transport;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.net.URISyntaxException;
import java.util.Collections;
import java.util.Set;
import org.eclipse.jgit.errors.MissingBundlePrerequisiteException;
import org.eclipse.jgit.errors.NotSupportedException;
import org.eclipse.jgit.errors.TransportException;
import org.eclipse.jgit.lib.NullProgressMonitor;
import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.lib.Ref;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.jgit.revwalk.RevWalk;
import org.eclipse.jgit.test.resources.SampleDataRepositoryTestCase;
import org.junit.Test;
public class BundleWriterTest extends SampleDataRepositoryTestCase {
@Test
public void testWriteSingleRef() throws Exception {
// Create a tiny bundle, (well one of) the first commits only
final byte[] bundle = makeBundle("refs/heads/firstcommit",
"42e4e7c5e507e113ebbb7801b16b52cf867b7ce1", null);
// Then we clone a new repo from that bundle and do a simple test. This
// makes sure we could read the bundle we created.
Repository newRepo = createBareRepository();
FetchResult fetchResult = fetchFromBundle(newRepo, bundle);
Ref advertisedRef = fetchResult
.getAdvertisedRef("refs/heads/firstcommit");
// We expect first commit to appear by id
assertEquals("42e4e7c5e507e113ebbb7801b16b52cf867b7ce1", advertisedRef
.getObjectId().name());
// ..and by name as the bundle created a new ref
assertEquals("42e4e7c5e507e113ebbb7801b16b52cf867b7ce1", newRepo
.resolve("refs/heads/firstcommit").name());
}
@Test
public void testWriteHEAD() throws Exception {
byte[] bundle = makeBundle("HEAD",
"42e4e7c5e507e113ebbb7801b16b52cf867b7ce1", null);
Repository newRepo = createBareRepository();
FetchResult fetchResult = fetchFromBundle(newRepo, bundle);
Ref advertisedRef = fetchResult.getAdvertisedRef("HEAD");
assertEquals("42e4e7c5e507e113ebbb7801b16b52cf867b7ce1", advertisedRef
.getObjectId().name());
}
@Test
public void testIncrementalBundle() throws Exception {
byte[] bundle;
// Create a small bundle, an early commit
bundle = makeBundle("refs/heads/aa", db.resolve("a").name(), null);
// Then we clone a new repo from that bundle and do a simple test. This
// makes sure
// we could read the bundle we created.
Repository newRepo = createBareRepository();
FetchResult fetchResult = fetchFromBundle(newRepo, bundle);
Ref advertisedRef = fetchResult.getAdvertisedRef("refs/heads/aa");
assertEquals(db.resolve("a").name(), advertisedRef.getObjectId().name());
assertEquals(db.resolve("a").name(), newRepo.resolve("refs/heads/aa")
.name());
assertNull(newRepo.resolve("refs/heads/a"));
// Next an incremental bundle
bundle = makeBundle("refs/heads/cc", db.resolve("c").name(),
new RevWalk(db).parseCommit(db.resolve("a").toObjectId()));
fetchResult = fetchFromBundle(newRepo, bundle);
advertisedRef = fetchResult.getAdvertisedRef("refs/heads/cc");
assertEquals(db.resolve("c").name(), advertisedRef.getObjectId().name());
assertEquals(db.resolve("c").name(), newRepo.resolve("refs/heads/cc")
.name());
assertNull(newRepo.resolve("refs/heads/c"));
assertNull(newRepo.resolve("refs/heads/a")); // still unknown
try {
// Check that we actually needed the first bundle
Repository newRepo2 = createBareRepository();
fetchResult = fetchFromBundle(newRepo2, bundle);
fail("We should not be able to fetch from bundle with prerequisites that are not fulfilled");
} catch (MissingBundlePrerequisiteException e) {
assertTrue(e.getMessage()
.indexOf(db.resolve("refs/heads/a").name()) >= 0);
}
}
@Test
public void testAbortWrite() throws Exception {
boolean caught = false;
try {
makeBundleWithCallback(
"refs/heads/aa", db.resolve("a").name(), null, false);
} catch (WriteAbortedException e) {
caught = true;
}
assertTrue(caught);
}
private static FetchResult fetchFromBundle(final Repository newRepo,
final byte[] bundle) throws URISyntaxException,
NotSupportedException, TransportException {
final URIish uri = new URIish("in-memory://");
final ByteArrayInputStream in = new ByteArrayInputStream(bundle);
final RefSpec rs = new RefSpec("refs/heads/*:refs/heads/*");
final Set<RefSpec> refs = Collections.singleton(rs);
try (TransportBundleStream transport = new TransportBundleStream(
newRepo, uri, in)) {
return transport.fetch(NullProgressMonitor.INSTANCE, refs);
}
}
private byte[] makeBundle(final String name,
final String anObjectToInclude, final RevCommit assume)
throws FileNotFoundException, IOException {
return makeBundleWithCallback(name, anObjectToInclude, assume, true);
}
private byte[] makeBundleWithCallback(final String name,
final String anObjectToInclude, final RevCommit assume,
boolean value)
throws FileNotFoundException, IOException {
final BundleWriter bw;
bw = new BundleWriter(db);
bw.setObjectCountCallback(new NaiveObjectCountCallback(value));
bw.include(name, ObjectId.fromString(anObjectToInclude));
if (assume != null)
bw.assume(assume);
final ByteArrayOutputStream out = new ByteArrayOutputStream();
bw.writeBundle(NullProgressMonitor.INSTANCE, out);
return out.toByteArray();
}
private static class NaiveObjectCountCallback
implements ObjectCountCallback {
private final boolean value;
NaiveObjectCountCallback(boolean value) {
this.value = value;
}
@Override
public void setObjectCount(long unused) throws WriteAbortedException {
if (!value)
throw new WriteAbortedException();
}
}
}
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