Example usage for org.apache.hadoop.fs FileSystemLinkResolver FileSystemLinkResolver

Introduction

In this page you can find the example usage for org.apache.hadoop.fs FileSystemLinkResolver FileSystemLinkResolver.

Prototype

FileSystemLinkResolver

Source Link

Usage

From source file:com.mellanox.r4h.DistributedFileSystem.java

License:Apache License

private boolean mkdirsInternal(Path f, final FsPermission permission, final boolean createParent)
        throws IOException {
    statistics.incrementWriteOps(1);//from w ww. j  a va2 s  . c  o  m
    Path absF = fixRelativePart(f);
    return new FileSystemLinkResolver<Boolean>() {
        @Override
        public Boolean doCall(final Path p) throws IOException, UnresolvedLinkException {
            return dfs.mkdirs(getPathName(p), permission, createParent);
        }

        @Override
        public Boolean next(final FileSystem fs, final Path p) throws IOException {
            // FileSystem doesn't have a non-recursive mkdir() method
            // Best we can do is error out
            if (!createParent) {
                throw new IOException("FileSystem does not support non-recursive" + "mkdir");
            }
            return fs.mkdirs(p, permission);
        }
    }.resolve(this, absF);
}

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From source file:com.mellanox.r4h.DistributedFileSystem.java

License:Apache License

/**
 * Returns the stat information about the file.
 * /*from w ww  .jav a2 s  .  c  o  m*/
 * @throws FileNotFoundException
 *             if the file does not exist.
 */
@Override
public FileStatus getFileStatus(Path f) throws IOException {
    statistics.incrementReadOps(1);
    Path absF = fixRelativePart(f);
    return new FileSystemLinkResolver<FileStatus>() {
        @Override
        public FileStatus doCall(final Path p) throws IOException, UnresolvedLinkException {
            HdfsFileStatus fi = dfs.getFileInfo(getPathName(p));
            if (fi != null) {
                return fi.makeQualified(getUri(), p);
            } else {
                throw new FileNotFoundException("File does not exist: " + p);
            }
        }

        @Override
        public FileStatus next(final FileSystem fs, final Path p) throws IOException {
            return fs.getFileStatus(p);
        }
    }.resolve(this, absF);
}

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From source file:com.mellanox.r4h.DistributedFileSystem.java

License:Apache License

@SuppressWarnings("deprecation")
@Override// w ww  . ja  va2s  .c o m
public void createSymlink(final Path target, final Path link, final boolean createParent)
        throws AccessControlException, FileAlreadyExistsException, FileNotFoundException,
        ParentNotDirectoryException, UnsupportedFileSystemException, IOException {
    if (!FileSystem.areSymlinksEnabled()) {
        throw new UnsupportedOperationException("Symlinks not supported");
    }
    statistics.incrementWriteOps(1);
    final Path absF = fixRelativePart(link);
    new FileSystemLinkResolver<Void>() {
        @Override
        public Void doCall(final Path p) throws IOException, UnresolvedLinkException {
            dfs.createSymlink(target.toString(), getPathName(p), createParent);
            return null;
        }

        @Override
        public Void next(final FileSystem fs, final Path p) throws IOException, UnresolvedLinkException {
            fs.createSymlink(target, p, createParent);
            return null;
        }
    }.resolve(this, absF);
}

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From source file:com.mellanox.r4h.DistributedFileSystem.java

License:Apache License

@Override
public FileStatus getFileLinkStatus(final Path f)
        throws AccessControlException, FileNotFoundException, UnsupportedFileSystemException, IOException {
    statistics.incrementReadOps(1);//from ww w  .j av  a 2s.  c  om
    final Path absF = fixRelativePart(f);
    FileStatus status = new FileSystemLinkResolver<FileStatus>() {
        @Override
        public FileStatus doCall(final Path p) throws IOException, UnresolvedLinkException {
            HdfsFileStatus fi = dfs.getFileLinkInfo(getPathName(p));
            if (fi != null) {
                return fi.makeQualified(getUri(), p);
            } else {
                throw new FileNotFoundException("File does not exist: " + p);
            }
        }

        @Override
        public FileStatus next(final FileSystem fs, final Path p) throws IOException, UnresolvedLinkException {
            return fs.getFileLinkStatus(p);
        }
    }.resolve(this, absF);
    // Fully-qualify the symlink
    if (status.isSymlink()) {
        Path targetQual = FSLinkResolver.qualifySymlinkTarget(this.getUri(), status.getPath(),
                status.getSymlink());
        status.setSymlink(targetQual);
    }
    return status;
}

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From source file:com.mellanox.r4h.DistributedFileSystem.java

License:Apache License

@Override
public Path getLinkTarget(final Path f)
        throws AccessControlException, FileNotFoundException, UnsupportedFileSystemException, IOException {
    statistics.incrementReadOps(1);// w w w  .  ja v a  2  s .  com
    final Path absF = fixRelativePart(f);
    return new FileSystemLinkResolver<Path>() {
        @Override
        public Path doCall(final Path p) throws IOException, UnresolvedLinkException {
            HdfsFileStatus fi = dfs.getFileLinkInfo(getPathName(p));
            if (fi != null) {
                return fi.makeQualified(getUri(), p).getSymlink();
            } else {
                throw new FileNotFoundException("File does not exist: " + p);
            }
        }

        @Override
        public Path next(final FileSystem fs, final Path p) throws IOException, UnresolvedLinkException {
            return fs.getLinkTarget(p);
        }
    }.resolve(this, absF);
}

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From source file:com.mellanox.r4h.DistributedFileSystem.java

License:Apache License

@Override
public FileChecksum getFileChecksum(Path f) throws IOException {
    statistics.incrementReadOps(1);/*  w w w . ja  v a  2  s.  c o  m*/
    Path absF = fixRelativePart(f);
    return new FileSystemLinkResolver<FileChecksum>() {
        @Override
        public FileChecksum doCall(final Path p) throws IOException, UnresolvedLinkException {
            return dfs.getFileChecksum(getPathName(p), Long.MAX_VALUE);
        }

        @Override
        public FileChecksum next(final FileSystem fs, final Path p) throws IOException {
            return fs.getFileChecksum(p);
        }
    }.resolve(this, absF);
}

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From source file:com.mellanox.r4h.DistributedFileSystem.java

License:Apache License

@Override
public FileChecksum getFileChecksum(Path f, final long length) throws IOException {
    statistics.incrementReadOps(1);/*from   w ww  .ja va 2  s.  c o  m*/
    Path absF = fixRelativePart(f);
    return new FileSystemLinkResolver<FileChecksum>() {
        @Override
        public FileChecksum doCall(final Path p) throws IOException, UnresolvedLinkException {
            return dfs.getFileChecksum(getPathName(p), length);
        }

        @Override
        public FileChecksum next(final FileSystem fs, final Path p) throws IOException {
            if (fs instanceof DistributedFileSystem) {
                return ((DistributedFileSystem) fs).getFileChecksum(p, length);
            } else {
                throw new UnsupportedFileSystemException(
                        "getFileChecksum(Path, long) is not supported by " + fs.getClass().getSimpleName());
            }
        }
    }.resolve(this, absF);
}

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From source file:com.mellanox.r4h.DistributedFileSystem.java

License:Apache License

@Override
public void setPermission(Path p, final FsPermission permission) throws IOException {
    statistics.incrementWriteOps(1);/*from w w w . ja v  a  2 s  .co  m*/
    Path absF = fixRelativePart(p);
    new FileSystemLinkResolver<Void>() {
        @Override
        public Void doCall(final Path p) throws IOException, UnresolvedLinkException {
            dfs.setPermission(getPathName(p), permission);
            return null;
        }

        @Override
        public Void next(final FileSystem fs, final Path p) throws IOException {
            fs.setPermission(p, permission);
            return null;
        }
    }.resolve(this, absF);
}

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From source file:com.mellanox.r4h.DistributedFileSystem.java

License:Apache License

@Override
public void setOwner(Path p, final String username, final String groupname) throws IOException {
    if (username == null && groupname == null) {
        throw new IOException("username == null && groupname == null");
    }/*from  ww  w  .ja  v  a 2 s .co  m*/
    statistics.incrementWriteOps(1);
    Path absF = fixRelativePart(p);
    new FileSystemLinkResolver<Void>() {
        @Override
        public Void doCall(final Path p) throws IOException, UnresolvedLinkException {
            dfs.setOwner(getPathName(p), username, groupname);
            return null;
        }

        @Override
        public Void next(final FileSystem fs, final Path p) throws IOException {
            fs.setOwner(p, username, groupname);
            return null;
        }
    }.resolve(this, absF);
}

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From source file:com.mellanox.r4h.DistributedFileSystem.java

License:Apache License

@Override
public void setTimes(Path p, final long mtime, final long atime) throws IOException {
    statistics.incrementWriteOps(1);/* w  ww  . j a  va  2  s  .com*/
    Path absF = fixRelativePart(p);
    new FileSystemLinkResolver<Void>() {
        @Override
        public Void doCall(final Path p) throws IOException, UnresolvedLinkException {
            dfs.setTimes(getPathName(p), mtime, atime);
            return null;
        }

        @Override
        public Void next(final FileSystem fs, final Path p) throws IOException {
            fs.setTimes(p, mtime, atime);
            return null;
        }
    }.resolve(this, absF);
}

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