debug-rebuild-ref-tree: Simple program to build a RefTree
This tool scans all references in the repository and writes out a new reference pointing to a single commit whose root tree is a RefTree containing the current refs of this repository. It alway skips storing the reference it will write to, avoiding the obvious cycle. Change-Id: I20b1eeb81c55dc49dd600eac3bf8f90297394113
This commit is contained in:
parent
73eb32be82
commit
52eb040c55
|
@ -21,6 +21,7 @@ Import-Package: org.apache.commons.compress.archivers;version="[1.3,2.0)",
|
|||
org.eclipse.jgit.gitrepo;version="[4.2.0,4.3.0)",
|
||||
org.eclipse.jgit.internal.storage.file;version="[4.2.0,4.3.0)",
|
||||
org.eclipse.jgit.internal.storage.pack;version="[4.2.0,4.3.0)",
|
||||
org.eclipse.jgit.internal.storage.reftree;version="[4.2.0,4.3.0)",
|
||||
org.eclipse.jgit.lib;version="[4.2.0,4.3.0)",
|
||||
org.eclipse.jgit.merge;version="4.2.0",
|
||||
org.eclipse.jgit.nls;version="[4.2.0,4.3.0)",
|
||||
|
|
|
@ -41,6 +41,7 @@ org.eclipse.jgit.pgm.debug.DiffAlgorithms
|
|||
org.eclipse.jgit.pgm.debug.MakeCacheTree
|
||||
org.eclipse.jgit.pgm.debug.ReadDirCache
|
||||
org.eclipse.jgit.pgm.debug.RebuildCommitGraph
|
||||
org.eclipse.jgit.pgm.debug.RebuildRefTree
|
||||
org.eclipse.jgit.pgm.debug.ShowCacheTree
|
||||
org.eclipse.jgit.pgm.debug.ShowCommands
|
||||
org.eclipse.jgit.pgm.debug.ShowDirCache
|
||||
|
|
|
@ -228,6 +228,7 @@ usage_MergeBase=Find as good common ancestors as possible for a merge
|
|||
usage_MergesTwoDevelopmentHistories=Merges two development histories
|
||||
usage_ReadDirCache= Read the DirCache 100 times
|
||||
usage_RebuildCommitGraph=Recreate a repository from another one's commit graph
|
||||
usage_RebuildRefTree=Copy references into a RefTree
|
||||
usage_Remote=Manage set of tracked repositories
|
||||
usage_RepositoryToReadFrom=Repository to read from
|
||||
usage_RepositoryToReceiveInto=Repository to receive into
|
||||
|
@ -359,6 +360,7 @@ usage_tags=fetch all tags
|
|||
usage_notags=do not fetch tags
|
||||
usage_tagMessage=tag message
|
||||
usage_untrackedFilesMode=show untracked files
|
||||
usage_updateRef=reference to update
|
||||
usage_updateRemoteRefsFromAnotherRepository=Update remote refs from another repository
|
||||
usage_useNameInsteadOfOriginToTrackUpstream=use <name> instead of 'origin' to track upstream
|
||||
usage_checkoutBranchAfterClone=checkout named branch instead of remotes's HEAD
|
||||
|
|
|
@ -0,0 +1,130 @@
|
|||
/*
|
||||
* Copyright (C) 2015, Google Inc.
|
||||
* 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.pgm.debug;
|
||||
|
||||
import java.util.ArrayList;
|
||||
import java.util.List;
|
||||
import java.util.Map;
|
||||
|
||||
import org.eclipse.jgit.internal.storage.reftree.RefTree;
|
||||
import org.eclipse.jgit.lib.CommitBuilder;
|
||||
import org.eclipse.jgit.lib.ObjectId;
|
||||
import org.eclipse.jgit.lib.ObjectInserter;
|
||||
import org.eclipse.jgit.lib.ObjectReader;
|
||||
import org.eclipse.jgit.lib.PersonIdent;
|
||||
import org.eclipse.jgit.lib.Ref;
|
||||
import org.eclipse.jgit.lib.RefDatabase;
|
||||
import org.eclipse.jgit.lib.RefUpdate;
|
||||
import org.eclipse.jgit.pgm.Command;
|
||||
import org.eclipse.jgit.pgm.TextBuiltin;
|
||||
import org.eclipse.jgit.revwalk.RevWalk;
|
||||
import org.kohsuke.args4j.Argument;
|
||||
|
||||
@Command(usage = "usage_RebuildRefTree")
|
||||
class RebuildRefTree extends TextBuiltin {
|
||||
@Argument(index = 0, required = true, metaVar = "metaVar_ref", usage = "usage_updateRef")
|
||||
String refName;
|
||||
|
||||
@Override
|
||||
protected void run() throws Exception {
|
||||
try (ObjectReader reader = db.newObjectReader();
|
||||
RevWalk rw = new RevWalk(reader);
|
||||
ObjectInserter inserter = db.newObjectInserter()) {
|
||||
RefDatabase refDb = db.getRefDatabase();
|
||||
|
||||
CommitBuilder b = new CommitBuilder();
|
||||
Ref ref = db.getRefDatabase().exactRef(refName);
|
||||
RefUpdate update = db.updateRef(refName);
|
||||
ObjectId oldTreeId;
|
||||
|
||||
if (ref != null && ref.getObjectId() != null) {
|
||||
ObjectId oldId = ref.getObjectId();
|
||||
update.setExpectedOldObjectId(oldId);
|
||||
b.setParentId(oldId);
|
||||
oldTreeId = rw.parseCommit(oldId).getTree();
|
||||
} else {
|
||||
update.setExpectedOldObjectId(ObjectId.zeroId());
|
||||
oldTreeId = ObjectId.zeroId();
|
||||
}
|
||||
|
||||
RefTree tree = rebuild(refDb.getRefs(RefDatabase.ALL));
|
||||
b.setTreeId(tree.writeTree(inserter));
|
||||
b.setAuthor(new PersonIdent(db));
|
||||
b.setCommitter(b.getAuthor());
|
||||
if (b.getTreeId().equals(oldTreeId)) {
|
||||
return;
|
||||
}
|
||||
|
||||
update.setNewObjectId(inserter.insert(b));
|
||||
inserter.flush();
|
||||
|
||||
RefUpdate.Result result = update.update(rw);
|
||||
switch (result) {
|
||||
case NEW:
|
||||
case FAST_FORWARD:
|
||||
break;
|
||||
default:
|
||||
throw die(String.format("%s: %s", update.getName(), result)); //$NON-NLS-1$
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
private RefTree rebuild(Map<String, Ref> refMap) {
|
||||
RefTree tree = RefTree.newEmptyTree();
|
||||
List<org.eclipse.jgit.internal.storage.reftree.Command> cmds
|
||||
= new ArrayList<>();
|
||||
|
||||
for (Ref r : refMap.values()) {
|
||||
if (refName.equals(r.getName())) {
|
||||
continue;
|
||||
}
|
||||
|
||||
cmds.add(new org.eclipse.jgit.internal.storage.reftree.Command(
|
||||
null,
|
||||
db.peel(r)));
|
||||
}
|
||||
tree.apply(cmds);
|
||||
return tree;
|
||||
}
|
||||
}
|
Loading…
Reference in New Issue