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247 lines
8.5 KiB
247 lines
8.5 KiB
/* |
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* Copyright (C) 2008-2009, Google Inc. |
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* Copyright (C) 2008, Mike Ralphson <mike@abacus.co.uk> |
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* Copyright (C) 2008, Robin Rosenberg <robin.rosenberg@dewire.com> and others |
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* |
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* This program and the accompanying materials are made available under the |
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* terms of the Eclipse Distribution License v. 1.0 which is available at |
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* https://www.eclipse.org/org/documents/edl-v10.php. |
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* |
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* SPDX-License-Identifier: BSD-3-Clause |
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*/ |
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package org.eclipse.jgit.transport; |
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import static java.nio.charset.StandardCharsets.UTF_8; |
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import static org.eclipse.jgit.lib.Constants.OBJ_BLOB; |
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import static org.junit.Assert.assertEquals; |
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import static org.junit.Assert.assertNotNull; |
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import static org.junit.Assert.assertNull; |
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import static org.junit.Assert.assertThrows; |
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import static org.junit.Assert.assertTrue; |
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import static org.junit.Assert.fail; |
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import java.io.ByteArrayInputStream; |
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import java.io.ByteArrayOutputStream; |
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import java.io.FileNotFoundException; |
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import java.io.IOException; |
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import java.net.URISyntaxException; |
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import java.util.Collections; |
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import java.util.Set; |
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import org.eclipse.jgit.errors.MissingBundlePrerequisiteException; |
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import org.eclipse.jgit.errors.MissingObjectException; |
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import org.eclipse.jgit.errors.NotSupportedException; |
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import org.eclipse.jgit.errors.TransportException; |
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import org.eclipse.jgit.internal.storage.dfs.DfsRepositoryDescription; |
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import org.eclipse.jgit.internal.storage.dfs.InMemoryRepository; |
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import org.eclipse.jgit.lib.Constants; |
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import org.eclipse.jgit.lib.NullProgressMonitor; |
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import org.eclipse.jgit.lib.ObjectId; |
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import org.eclipse.jgit.lib.ObjectInserter; |
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import org.eclipse.jgit.lib.ObjectReader; |
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import org.eclipse.jgit.lib.Ref; |
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import org.eclipse.jgit.lib.Repository; |
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import org.eclipse.jgit.revwalk.RevCommit; |
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import org.eclipse.jgit.revwalk.RevWalk; |
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import org.eclipse.jgit.test.resources.SampleDataRepositoryTestCase; |
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import org.junit.Test; |
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public class BundleWriterTest extends SampleDataRepositoryTestCase { |
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@Test |
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public void testEmptyBundleFails() throws Exception { |
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Repository newRepo = createBareRepository(); |
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assertThrows(TransportException.class, |
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() -> fetchFromBundle(newRepo, new byte[0])); |
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} |
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@Test |
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public void testNonBundleFails() throws Exception { |
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Repository newRepo = createBareRepository(); |
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assertThrows(TransportException.class, () -> fetchFromBundle(newRepo, |
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"Not a bundle file".getBytes(UTF_8))); |
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} |
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@Test |
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public void testGarbageBundleFails() throws Exception { |
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Repository newRepo = createBareRepository(); |
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assertThrows(TransportException.class, () -> fetchFromBundle(newRepo, |
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(TransportBundle.V2_BUNDLE_SIGNATURE + '\n' + "Garbage") |
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.getBytes(UTF_8))); |
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} |
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@Test |
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public void testWriteSingleRef() throws Exception { |
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// Create a tiny bundle, (well one of) the first commits only |
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final byte[] bundle = makeBundle("refs/heads/firstcommit", |
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"42e4e7c5e507e113ebbb7801b16b52cf867b7ce1", null); |
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// Then we clone a new repo from that bundle and do a simple test. This |
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// makes sure we could read the bundle we created. |
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Repository newRepo = createBareRepository(); |
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FetchResult fetchResult = fetchFromBundle(newRepo, bundle); |
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Ref advertisedRef = fetchResult |
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.getAdvertisedRef("refs/heads/firstcommit"); |
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// We expect first commit to appear by id |
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assertEquals("42e4e7c5e507e113ebbb7801b16b52cf867b7ce1", advertisedRef |
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.getObjectId().name()); |
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// ..and by name as the bundle created a new ref |
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assertEquals("42e4e7c5e507e113ebbb7801b16b52cf867b7ce1", newRepo |
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.resolve("refs/heads/firstcommit").name()); |
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} |
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@Test |
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public void testWriteHEAD() throws Exception { |
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byte[] bundle = makeBundle("HEAD", |
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"42e4e7c5e507e113ebbb7801b16b52cf867b7ce1", null); |
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Repository newRepo = createBareRepository(); |
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FetchResult fetchResult = fetchFromBundle(newRepo, bundle); |
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Ref advertisedRef = fetchResult.getAdvertisedRef("HEAD"); |
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assertEquals("42e4e7c5e507e113ebbb7801b16b52cf867b7ce1", advertisedRef |
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.getObjectId().name()); |
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} |
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@Test |
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public void testIncrementalBundle() throws Exception { |
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byte[] bundle; |
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// Create a small bundle, an early commit |
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bundle = makeBundle("refs/heads/aa", db.resolve("a").name(), null); |
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// Then we clone a new repo from that bundle and do a simple test. This |
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// makes sure |
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// we could read the bundle we created. |
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Repository newRepo = createBareRepository(); |
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FetchResult fetchResult = fetchFromBundle(newRepo, bundle); |
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Ref advertisedRef = fetchResult.getAdvertisedRef("refs/heads/aa"); |
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assertEquals(db.resolve("a").name(), advertisedRef.getObjectId().name()); |
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assertEquals(db.resolve("a").name(), newRepo.resolve("refs/heads/aa") |
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.name()); |
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assertNull(newRepo.resolve("refs/heads/a")); |
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// Next an incremental bundle |
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try (RevWalk rw = new RevWalk(db)) { |
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bundle = makeBundle("refs/heads/cc", db.resolve("c").name(), |
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rw.parseCommit(db.resolve("a").toObjectId())); |
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fetchResult = fetchFromBundle(newRepo, bundle); |
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advertisedRef = fetchResult.getAdvertisedRef("refs/heads/cc"); |
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assertEquals(db.resolve("c").name(), advertisedRef.getObjectId().name()); |
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assertEquals(db.resolve("c").name(), newRepo.resolve("refs/heads/cc") |
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.name()); |
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assertNull(newRepo.resolve("refs/heads/c")); |
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assertNull(newRepo.resolve("refs/heads/a")); // still unknown |
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try { |
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// Check that we actually needed the first bundle |
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Repository newRepo2 = createBareRepository(); |
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fetchResult = fetchFromBundle(newRepo2, bundle); |
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fail("We should not be able to fetch from bundle with prerequisites that are not fulfilled"); |
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} catch (MissingBundlePrerequisiteException e) { |
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assertTrue(e.getMessage() |
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.indexOf(db.resolve("refs/heads/a").name()) >= 0); |
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} |
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} |
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} |
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@Test |
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public void testAbortWrite() throws Exception { |
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boolean caught = false; |
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try { |
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makeBundleWithCallback( |
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"refs/heads/aa", db.resolve("a").name(), null, false); |
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} catch (WriteAbortedException e) { |
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caught = true; |
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} |
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assertTrue(caught); |
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} |
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@Test |
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public void testCustomObjectReader() throws Exception { |
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String refName = "refs/heads/blob"; |
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String data = "unflushed data"; |
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ObjectId id; |
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ByteArrayOutputStream out = new ByteArrayOutputStream(); |
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try (Repository repo = new InMemoryRepository( |
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new DfsRepositoryDescription("repo")); |
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ObjectInserter ins = repo.newObjectInserter(); |
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ObjectReader or = ins.newReader()) { |
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id = ins.insert(OBJ_BLOB, Constants.encode(data)); |
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BundleWriter bw = new BundleWriter(or); |
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bw.include(refName, id); |
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bw.writeBundle(NullProgressMonitor.INSTANCE, out); |
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assertNull(repo.exactRef(refName)); |
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try { |
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repo.open(id, OBJ_BLOB); |
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fail("We should not be able to open the unflushed blob"); |
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} catch (MissingObjectException e) { |
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// Expected. |
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} |
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} |
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try (Repository repo = new InMemoryRepository( |
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new DfsRepositoryDescription("copy"))) { |
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fetchFromBundle(repo, out.toByteArray()); |
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Ref ref = repo.exactRef(refName); |
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assertNotNull(ref); |
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assertEquals(id, ref.getObjectId()); |
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assertEquals(data, |
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new String(repo.open(id, OBJ_BLOB).getBytes(), UTF_8)); |
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} |
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} |
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private static FetchResult fetchFromBundle(final Repository newRepo, |
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final byte[] bundle) throws URISyntaxException, |
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NotSupportedException, TransportException { |
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final URIish uri = new URIish("in-memory://"); |
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final ByteArrayInputStream in = new ByteArrayInputStream(bundle); |
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final RefSpec rs = new RefSpec("refs/heads/*:refs/heads/*"); |
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final Set<RefSpec> refs = Collections.singleton(rs); |
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try (TransportBundleStream transport = new TransportBundleStream( |
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newRepo, uri, in)) { |
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return transport.fetch(NullProgressMonitor.INSTANCE, refs); |
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} |
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} |
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private byte[] makeBundle(final String name, |
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final String anObjectToInclude, final RevCommit assume) |
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throws FileNotFoundException, IOException { |
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return makeBundleWithCallback(name, anObjectToInclude, assume, true); |
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} |
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private byte[] makeBundleWithCallback(final String name, |
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final String anObjectToInclude, final RevCommit assume, |
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boolean value) |
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throws FileNotFoundException, IOException { |
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final BundleWriter bw; |
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bw = new BundleWriter(db); |
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bw.setObjectCountCallback(new NaiveObjectCountCallback(value)); |
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bw.include(name, ObjectId.fromString(anObjectToInclude)); |
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if (assume != null) |
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bw.assume(assume); |
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final ByteArrayOutputStream out = new ByteArrayOutputStream(); |
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bw.writeBundle(NullProgressMonitor.INSTANCE, out); |
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return out.toByteArray(); |
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} |
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private static class NaiveObjectCountCallback |
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implements ObjectCountCallback { |
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private final boolean value; |
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NaiveObjectCountCallback(boolean value) { |
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this.value = value; |
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} |
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@Override |
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public void setObjectCount(long unused) throws WriteAbortedException { |
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if (!value) |
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throw new WriteAbortedException(); |
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} |
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} |
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}
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