Example usage for org.eclipse.jgit.internal.storage.file LockFile LockFile

Introduction

In this page you can find the example usage for org.eclipse.jgit.internal.storage.file LockFile LockFile.

Prototype

public LockFile(File f) 

Source Link

Document

Create a new lock for any file.

Usage

From source file:com.googlesource.gerrit.plugins.lfs.locks.LfsProjectLocks.java

License:Apache License

LfsLock createLock(CurrentUser user, LfsCreateLockInput input) throws LfsException {
    log.atFine().log("Create lock for %s in project %s", input.path, project);
    String lockId = toLockId.apply(input.path);
    LfsLock lock = locks.getIfPresent(lockId);
    if (lock != null) {
        throw new LfsLockExistsException(lock);
    }//www. jav  a2 s  . c  o  m

    lock = new LfsLock(lockId, input.path, LfsDateTime.now(), new LfsLockOwner(user.getUserName().get()));
    LockFile fileLock = new LockFile(locksPath.resolve(lockId).toFile());
    try {
        if (!fileLock.lock()) {
            log.atWarning().log("Cannot lock path [%s] in project %s", input.path, project);
            throw new LfsLockExistsException(lock);
        }
    } catch (IOException e) {
        String error = String.format("Locking path [%s] in project %s failed with error %s", input.path,
                project, e.getMessage());
        log.atWarning().log(error);
        throw new LfsException(error);
    }

    try {
        try (OutputStreamWriter out = new OutputStreamWriter(fileLock.getOutputStream())) {
            gson.toJson(lock, out);
        } catch (IOException e) {
            String error = String.format("Locking path [%s] in project %s failed during write with error %s",
                    input.path, project, e.getMessage());
            log.atWarning().log(error);
            throw new LfsException(error);
        }
        if (!fileLock.commit()) {
            String error = String.format("Committing lock to path [%s] in project %s failed", input.path,
                    project);
            log.atWarning().log(error);
            throw new LfsException(error);
        }
        // put lock object to cache while file lock is being hold so that
        // there is no chance that other process performs lock operation
        // in the meantime (either cache returns with existing object or
        // LockFile.lock fails on locking attempt)
        locks.put(lockId, lock);
    } finally {
        fileLock.unlock();
    }

    return lock;
}

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From source file:com.googlesource.gerrit.plugins.lfs.locks.LfsProjectLocks.java

License:Apache License

void deleteLock(LfsLock lock) throws LfsException {
    LockFile fileLock = new LockFile(locksPath.resolve(lock.id).toFile());
    try {/*  www . j  ava2 s.  c o  m*/
        if (!fileLock.lock()) {
            String error = String.format("Deleting lock on path [%s] in project %s is not possible", lock.path,
                    project);
            log.atWarning().log(error);
            throw new LfsException(error);
        }
    } catch (IOException e) {
        String error = String.format("Getting lock on path [%s] in project %s failed with error %s", lock.path,
                project, e.getMessage());
        log.atWarning().log(error);
        throw new LfsException(error);
    }

    try {
        Files.deleteIfExists(locksPath.resolve(lock.id));
        locks.invalidate(lock.id);
    } catch (IOException e) {
        String error = String.format("Deleting lock on path [%s] in project %s failed with error %s", lock.path,
                project, e.getMessage());
        log.atWarning().log(error);
        throw new LfsException(error);
    } finally {
        fileLock.unlock();
    }
}

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From source file:com.googlesource.gerrit.plugins.secureconfig.SecureConfigStore.java

License:Apache License

private void saveSecure(final FileBasedConfig sec) throws IOException {
    if (FileUtil.modified(sec)) {
        final byte[] out = Constants.encode(sec.toText());
        final File path = sec.getFile();
        final LockFile lf = new LockFile(path);
        if (!lf.lock()) {
            throw new IOException("Cannot lock " + path);
        }/*  w w  w.  jav a  2  s  . com*/
        try {
            FileUtil.chmod(0600, new File(path.getParentFile(), path.getName() + ".lock"));
            lf.write(out);
            if (!lf.commit()) {
                throw new IOException("Cannot commit write to " + path);
            }
        } finally {
            lf.unlock();
        }
    }
}

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From source file:org.craftercms.studio.impl.v1.repository.git.GitContentRepository.java

License:Open Source License

@Override
public void lockItem(String site, String path) {
    Repository repo = helper.getRepository(site, StringUtils.isEmpty(site) ? GitRepositories.GLOBAL : SANDBOX);

    synchronized (helper.getRepository(site, StringUtils.isEmpty(site) ? GitRepositories.GLOBAL : SANDBOX)) {
        try (TreeWalk tw = new TreeWalk(repo)) {
            RevTree tree = helper.getTreeForLastCommit(repo);
            tw.addTree(tree); // tree 0
            tw.setRecursive(false);/*from  w  ww.  ja  va2 s .com*/
            tw.setFilter(PathFilter.create(path));

            if (!tw.next()) {
                return;
            }

            File repoRoot = repo.getWorkTree();
            Paths.get(repoRoot.getPath(), tw.getPathString());
            File file = new File(tw.getPathString());
            LockFile lock = new LockFile(file);
            lock.lock();

            tw.close();

        } catch (IOException e) {
            logger.error("Error while locking file for site: " + site + " path: " + path, e);
        }
    }
}

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From source file:org.craftercms.studio.impl.v1.repository.git.GitContentRepository.java

License:Open Source License

@Override
public void unLockItem(String site, String path) {
    Repository repo = helper.getRepository(site, StringUtils.isEmpty(site) ? GitRepositories.GLOBAL : SANDBOX);

    synchronized (helper.getRepository(site, StringUtils.isEmpty(site) ? GitRepositories.GLOBAL : SANDBOX)) {
        try (TreeWalk tw = new TreeWalk(repo)) {
            RevTree tree = helper.getTreeForLastCommit(repo);
            tw.addTree(tree); // tree 0
            tw.setRecursive(false);//from  www . ja  va2  s. c o m
            tw.setFilter(PathFilter.create(path));

            if (!tw.next()) {
                return;
            }

            File repoRoot = repo.getWorkTree();
            Paths.get(repoRoot.getPath(), tw.getPathString());
            File file = new File(tw.getPathString());
            LockFile lock = new LockFile(file);
            lock.unlock();

            tw.close();

        } catch (IOException e) {
            logger.error("Error while unlocking file for site: " + site + " path: " + path, e);
        }
    }
}

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