Java Code Examples for org.eclipse.jgit.revwalk.RevWalk#dispose()

private RevCommit parseCommit() {
	if (this.commit == null) {
		RevWalk rw = new RevWalk(db);
		RevObject any;
		try {
			any = rw.parseAny(this.ref.getObjectId());
			if (any instanceof RevTag) {
				this.tag = (RevTag) any;
				RevObject o = rw.peel(any);
				if (o instanceof RevCommit) {
					this.commit = (RevCommit) rw.peel(any);
				}
			} else if (any instanceof RevCommit) {
				this.commit = (RevCommit) any;
			}
		} catch (IOException e) {
		} finally {
			rw.dispose();
		}
	}
	return commit;
}
 

public List<String> logCommitIds() {
	List<String> commits = new ArrayList<String>();
	RevWalk temprevwalk = new RevWalk(repository);
	try {
		revwalk.reset();
		Set<RevCommit> heads = getHeads();
		revwalk.markStart(heads);
		revwalk.sort(RevSort.TOPO, true);
		revwalk.sort(RevSort.COMMIT_TIME_DESC, true);
		revwalk.sort(RevSort.REVERSE, true);
		for (final RevCommit rc : revwalk)
			commits.add(rc.getName());
	} catch (final IOException e) {
		e.printStackTrace();
	} finally {
		temprevwalk.dispose();
		temprevwalk.close();
	}
	return commits;
}
 

public void countChangedFiles(List<String> commits, Map<String, Integer> counts) {
	RevWalk temprevwalk = new RevWalk(repository);
	try {
		revwalk.reset();
		Set<RevCommit> heads = getHeads();
		revwalk.markStart(heads);
		revwalk.sort(RevSort.TOPO, true);
		revwalk.sort(RevSort.COMMIT_TIME_DESC, true);
		revwalk.sort(RevSort.REVERSE, true);
		for (final RevCommit rc: revwalk) {
			final GitCommit gc = new GitCommit(this, repository, temprevwalk, projectName);
			System.out.println(rc.getName());
			commits.add(rc.getName());
			int count = gc.countChangedFiles(rc);
			counts.put(rc.getName(), count);
		}
	} catch (final IOException e) {
		if (debug)
			System.err.println("Git Error getting parsing HEAD commit for " + path + ". " + e.getMessage());
	} finally {
		temprevwalk.dispose();
		temprevwalk.close();
	}
}
 

boolean isRefBehind( Ref behind, Ref tracking ) throws IOException {
  RevWalk walk = new RevWalk( _git.getRepository() );
  try {
    RevCommit behindCommit = walk.parseCommit( behind.getObjectId() );
    RevCommit trackingCommit = walk.parseCommit( tracking.getObjectId() );
    walk.setRevFilter( RevFilter.MERGE_BASE );
    walk.markStart( behindCommit );
    walk.markStart( trackingCommit );
    RevCommit mergeBase = walk.next();
    walk.reset();
    walk.setRevFilter( RevFilter.ALL );
    int aheadCount = RevWalkUtils.count( walk, behindCommit, mergeBase );
    int behindCount = RevWalkUtils.count( walk, trackingCommit, mergeBase );
    
    return behindCount > aheadCount ? true:false;
  } catch (Throwable e) {
         throw new RuntimeException(String.format(
                 "Failed to check if [%s] behind [%s]",
                 behind,
                 tracking), e);
     } 
  finally {
    walk.dispose();
  }
}
 

@Override
public boolean isBranchContainsCommit(String branchName, String commitId) {
    
    boolean ans = false;
    RevWalk walk = new RevWalk(_repo);
    RevCommit commit;
    Ref ref;
    try {
        commit = walk.parseCommit(_repo.resolve(commitId + "^0"));
        ref = _repo.getRef(branchName);
        if (walk.isMergedInto(commit, walk.parseCommit(ref.getObjectId()))) {
            ans = true;
        }
        walk.dispose();
    } catch (Throwable e) {
        throw new RuntimeException(String.format(
                "Failed to check if commit [%s] is part of branch[%s]",
                commitId,
                branchName), e);
    }
    
    return ans;
}
 

@Override
public Churn churnAtCommit(Repository repository, String commitId, RefactoringHandler handler) {
	GitService gitService = new GitServiceImpl();
	RevWalk walk = new RevWalk(repository);
	try {
		RevCommit commit = walk.parseCommit(repository.resolve(commitId));
		if (commit.getParentCount() > 0) {
			walk.parseCommit(commit.getParent(0));
			return gitService.churn(repository, commit);
		}
		else {
			logger.warn(String.format("Ignored revision %s because it has no parent", commitId));
		}
	} catch (MissingObjectException moe) {
		logger.warn(String.format("Ignored revision %s due to missing commit", commitId), moe);
	} catch (Exception e) {
		logger.warn(String.format("Ignored revision %s due to error", commitId), e);
		handler.handleException(commitId, e);
	} finally {
		walk.close();
		walk.dispose();
	}
	return null;
}
 

@Override
public void detectAll(Repository repository, String branch, final RefactoringHandler handler) throws Exception {
	GitService gitService = new GitServiceImpl() {
		@Override
		public boolean isCommitAnalyzed(String sha1) {
			return handler.skipCommit(sha1);
		}
	};
	RevWalk walk = gitService.createAllRevsWalk(repository, branch);
	try {
		detect(gitService, repository, handler, walk.iterator());
	} finally {
		walk.dispose();
	}
}
 

@Override
public int countCommits(Repository repository, String branch) throws Exception {
	RevWalk walk = new RevWalk(repository);
	try {
		Ref ref = repository.findRef(REMOTE_REFS_PREFIX + branch);
		ObjectId objectId = ref.getObjectId();
		RevCommit start = walk.parseCommit(objectId);
		walk.setRevFilter(RevFilter.NO_MERGES);
		return RevWalkUtils.count(walk, start, null);
	} finally {
		walk.dispose();
	}
}
 

@Override
public void fetchAndDetectNew(Repository repository, final RefactoringHandler handler) throws Exception {
	GitService gitService = new GitServiceImpl() {
		@Override
		public boolean isCommitAnalyzed(String sha1) {
			return handler.skipCommit(sha1);
		}
	};
	RevWalk walk = gitService.fetchAndCreateNewRevsWalk(repository);
	try {
		detect(gitService, repository, handler, walk.iterator());
	} finally {
		walk.dispose();
	}
}
 

@Override
public Integer countCommits(Repository repository, String branch) throws Exception {
	RevWalk walk = new RevWalk(repository);
	try {
		Ref ref = repository.findRef(REMOTE_REFS_PREFIX + branch);
		ObjectId objectId = ref.getObjectId();
		RevCommit start = walk.parseCommit(objectId);
		walk.setRevFilter(RevFilter.NO_MERGES);
		return RevWalkUtils.count(walk, start, null);
	} finally {
		walk.dispose();
	}
}
 

private AbstractTreeIterator prepareTreeParser(Repository repository, String objectId) throws IOException {
    // from the commit we can build the tree which allows us to construct the TreeParser
    //noinspection Duplicates
    RevWalk walk = new RevWalk(repository);
    RevCommit commit = walk.parseCommit(repository.resolve(objectId));
    RevTree tree = walk.parseTree(commit.getTree().getId());

    CanonicalTreeParser treeParser = new CanonicalTreeParser();
    ObjectReader reader = repository.newObjectReader();
    treeParser.reset(reader, tree.getId());

    walk.dispose();

    return treeParser;
}
 

private static AbstractTreeIterator prepareTreeParser(Repository repository, String objectId) throws IOException,
        MissingObjectException,
        IncorrectObjectTypeException {
    RevWalk walk = new RevWalk(repository) ;
    RevCommit commit = walk.parseCommit(ObjectId.fromString(objectId));
    RevTree tree = walk.parseTree(commit.getTree().getId());
    CanonicalTreeParser oldTreeParser = new CanonicalTreeParser();
    ObjectReader oldReader = repository.newObjectReader();
    oldTreeParser.reset(oldReader, tree.getId());
    walk.dispose();
    return oldTreeParser;
}
 

public boolean hasChangedSince(String modulePath, java.util.List<String> childModules, Collection<AnnotatedTag> tags) throws IOException {
    RevWalk walk = new RevWalk(repo);
    try {
        walk.setRetainBody(false);
        walk.markStart(walk.parseCommit(repo.getRefDatabase().findRef("HEAD").getObjectId()));
        filterOutOtherModulesChanges(modulePath, childModules, walk);
        stopWalkingWhenTheTagsAreHit(tags, walk);
        return walk.iterator().hasNext();
    } finally {
        walk.dispose();
    }
}
 

private Collection<RevTag> findMatchingTags(String[] changeDescriptions) throws GitAPIException {
    final Set<String> changes = new HashSet<>(asList(changeDescriptions));
    final RevWalk revWalk = new RevWalk(repository);
    final List<RevTag> matchingTags = git.tagList().call().stream().map(ref -> {
        try {
            return revWalk.parseTag(ref.getObjectId());
        } catch (IOException e) {
            throw new RuntimeException("Unable to find tag for " + ref.getObjectId(), e);
        }
    }).filter(revTag -> changes.contains(revTag.getFullMessage().trim()))
        .collect(Collectors.toList());
    revWalk.dispose();
    return matchingTags;
}
 

@Override
protected StepStatus businessExecute() {
    if (this.getConfig().isPush()) {
        if (this.commitType == CommitType.COMMIT_HUMAN_PATCH) {
            this.getLogger().info("Commit human patch...");
        } else {
            this.getLogger().info("Commit info from repair tools...");
        }

        super.setCommitType(this.commitType);

        try {
            Git git = Git.open(new File(this.getInspector().getRepoToPushLocalPath()));
            Ref oldHeadRef = git.getRepository().exactRef("HEAD");

            RevWalk revWalk = new RevWalk(git.getRepository());
            RevCommit headRev = revWalk.parseCommit(oldHeadRef.getObjectId());
            revWalk.dispose();

            StepStatus stepStatus = super.businessExecute();

            if (stepStatus.isSuccess()) {
                RevCommit commit = super.getCommit();
                this.getInspector().getGitHelper().computePatchStats(this.getInspector().getJobStatus(), git, headRev, commit);

                if (this.commitType == CommitType.COMMIT_HUMAN_PATCH) {
                    this.setPushState(PushState.PATCH_COMMITTED);
                } else {
                    this.setPushState(PushState.REPAIR_INFO_COMMITTED);
                }
            } else {
                if (this.commitType == CommitType.COMMIT_HUMAN_PATCH) {
                    this.setPushState(PushState.PATCH_NOT_COMMITTED);
                } else {
                    this.setPushState(PushState.REPAIR_INFO_NOT_COMMITTED);
                }
            }
            return stepStatus;
        } catch (IOException e) {
            this.addStepError("Error while opening the local git repository, maybe it has not been initialized.", e);
        }
        if (this.commitType == CommitType.COMMIT_HUMAN_PATCH) {
            this.setPushState(PushState.PATCH_NOT_COMMITTED);
        } else {
            this.setPushState(PushState.REPAIR_INFO_NOT_COMMITTED);
        }
        return StepStatus.buildSkipped(this,"Error while committing.");
    } else {
        this.getLogger().info("Repairnator is configured NOT to push. Step bypassed.");
        return StepStatus.buildSkipped(this);
    }
}
 

protected String doDiff(Git git, String objectId, String baseObjectId, String pathOrBlobPath) throws IOException {
    Repository r = git.getRepository();
    String blobPath = trimLeadingSlash(pathOrBlobPath);

    RevCommit commit;
    if (Strings.isNotBlank(objectId)) {
        commit = CommitUtils.getCommit(r, objectId);
    } else {
        commit = CommitUtils.getHead(r);
    }
    RevCommit baseCommit = null;
    if (Strings.isNotBlank(baseObjectId) && !Objects.equals(baseObjectId, objectId)) {
        baseCommit = CommitUtils.getCommit(r, baseObjectId);
    }

    ByteArrayOutputStream buffer = new ByteArrayOutputStream();
    DiffFormatter formatter = createDiffFormatter(r, buffer);

    RevTree commitTree = commit.getTree();
    RevTree baseTree;
    if (baseCommit == null) {
        if (commit.getParentCount() > 0) {
            final RevWalk rw = new RevWalk(r);
            RevCommit parent = rw.parseCommit(commit.getParent(0).getId());
            rw.dispose();
            baseTree = parent.getTree();
        } else {
            // FIXME initial commit. no parent?!
            baseTree = commitTree;
        }
    } else {
        baseTree = baseCommit.getTree();
    }

    List<DiffEntry> diffEntries = formatter.scan(baseTree, commitTree);
    if (blobPath != null && blobPath.length() > 0) {
        for (DiffEntry diffEntry : diffEntries) {
            if (diffEntry.getNewPath().equalsIgnoreCase(blobPath)) {
                formatter.format(diffEntry);
                break;
            }
        }
    } else {
        formatter.format(diffEntries);
    }
    formatter.flush();
    return buffer.toString();
}
 

@Override
public TestVersionResult determineVersions(final String fetchRevision) throws StoreException.ReadException {
    try {
        final RevWalk walk = new RevWalk(git.getRepository());
        final ObjectId commitId = ObjectId.fromString(fetchRevision);
        final RevCommit headTree = walk.parseCommit(commitId);
        final RevTree tree = headTree.getTree();

        // now use a TreeWalk to iterate over all files in the Tree recursively
        // you can set Filters to narrow down the results if needed
        final TreeWalk treeWalk = new TreeWalk(git.getRepository());
        treeWalk.addTree(tree);
        treeWalk.setFilter(AndTreeFilter
            .create(PathFilter.create(testDefinitionsDirectory), PathSuffixFilter.create("definition.json")));
        treeWalk.setRecursive(true);

        final List<TestVersionResult.Test> tests = Lists.newArrayList();
        while (treeWalk.next()) {
            final ObjectId id = treeWalk.getObjectId(0);
            // final RevTree revTree = walk.lookupTree(id);

            final String path = treeWalk.getPathString();
            final String[] pieces = path.split("/");
            final String testname = pieces[pieces.length - 2]; // tree / parent directory name

            // testname, blobid pair
            // note this is the blobid hash - not a commit hash
            // RevTree.id and RevBlob.id
            tests.add(new TestVersionResult.Test(testname, id.name()));
        }

        walk.dispose();
        return new TestVersionResult(
                tests,
                new Date(Long.valueOf(headTree.getCommitTime()) * 1000 /* convert seconds to milliseconds */),
                determineAuthorId(headTree),
                headTree.toObjectId().getName(),
                headTree.getFullMessage()
        );
    } catch (final IOException e) {
        throw new StoreException.ReadException(e);
    }
}