Examples with URIStatus alluxio.client.file.URIStatus used on opensource projects

Example 21 with URIStatus

use of alluxio.client.file.URIStatus in project alluxio by Alluxio.

the class AlluxioFuseFileSystem method rmInternal.

/**
   * Convenience internal method to remove files or directories.
   *
   * @param path The path to remove
   * @param mustBeFile When true, returns an error when trying to
   *                   remove a directory
   * @return 0 on success, a negative value on error
   */
private int rmInternal(String path, boolean mustBeFile) {
    final AlluxioURI turi = mPathResolverCache.getUnchecked(path);
    try {
        if (!mFileSystem.exists(turi)) {
            LOG.error("File {} does not exist", turi);
            return -ErrorCodes.ENOENT();
        }
        final URIStatus status = mFileSystem.getStatus(turi);
        if (mustBeFile && status.isFolder()) {
            LOG.error("File {} is a directory", turi);
            return -ErrorCodes.EISDIR();
        }
        mFileSystem.delete(turi);
    } catch (FileDoesNotExistException e) {
        LOG.debug("File does not exist {}", path, e);
        return -ErrorCodes.ENOENT();
    } catch (IOException e) {
        LOG.error("IOException on {}", path, e);
        return -ErrorCodes.EIO();
    } catch (AlluxioException e) {
        LOG.error("AlluxioException on {}", path, e);
        return -ErrorCodes.EFAULT();
    } catch (Throwable e) {
        LOG.error("Unexpected exception on {}", path, e);
        return -ErrorCodes.EFAULT();
    }
    return 0;
}

Example 22 with URIStatus

use of alluxio.client.file.URIStatus in project alluxio by Alluxio.

the class AlluxioFuseFileSystem method readdir.

/**
   * Reads the contents of a directory.
   *
   * @param path The FS path of the directory
   * @param buff The FUSE buffer to fill
   * @param filter FUSE filter
   * @param offset Ignored in alluxio-fuse
   * @param fi FileInfo data structure kept by FUSE
   * @return 0 on success, a negative value on error
   */
@Override
public int readdir(String path, Pointer buff, FuseFillDir filter, @off_t long offset, FuseFileInfo fi) {
    final AlluxioURI turi = mPathResolverCache.getUnchecked(path);
    LOG.trace("readdir({}) [Alluxio: {}]", path, turi);
    try {
        if (!mFileSystem.exists(turi)) {
            return -ErrorCodes.ENOENT();
        }
        final URIStatus status = mFileSystem.getStatus(turi);
        if (!status.isFolder()) {
            return -ErrorCodes.ENOTDIR();
        }
        final List<URIStatus> ls = mFileSystem.listStatus(turi);
        // standard . and .. entries
        filter.apply(buff, ".", null, 0);
        filter.apply(buff, "..", null, 0);
        for (final URIStatus file : ls) {
            filter.apply(buff, file.getName(), null, 0);
        }
    } catch (FileDoesNotExistException e) {
        LOG.debug("File does not exist {}", path, e);
        return -ErrorCodes.ENOENT();
    } catch (InvalidPathException e) {
        LOG.debug("Invalid path {}", path, e);
        return -ErrorCodes.ENOENT();
    } catch (IOException e) {
        LOG.error("IOException on {}", path, e);
        return -ErrorCodes.EIO();
    } catch (AlluxioException e) {
        LOG.error("AlluxioException on {}", path, e);
        return -ErrorCodes.EFAULT();
    } catch (Throwable e) {
        LOG.error("Unexpected exception on {}", path, e);
        return -ErrorCodes.EFAULT();
    }
    return 0;
}

Example 23 with URIStatus

use of alluxio.client.file.URIStatus in project alluxio by Alluxio.

the class AlluxioFuseFileSystem method open.

/**
   * Opens an existing file for reading.
   *
   * Note that the open mode <i>must</i> be
   * O_RDONLY, otherwise the open will fail. This is due to
   * the Alluxio "write-once/read-many-times" file model.
   *
   * @param path the FS path of the file to open
   * @param fi FileInfo data structure kept by FUSE
   * @return 0 on success, a negative value on error
   */
@Override
public int open(String path, FuseFileInfo fi) {
    final AlluxioURI turi = mPathResolverCache.getUnchecked(path);
    // (see {@code man 2 open} for the structure of the flags bitfield)
    // File creation flags are the last two bits of flags
    final int flags = fi.flags.get();
    LOG.trace("open({}, 0x{}) [Alluxio: {}]", path, Integer.toHexString(flags), turi);
    if ((flags & 3) != O_RDONLY.intValue()) {
        LOG.error("Files can only be opened in O_RDONLY mode ({})", path);
        return -ErrorCodes.EACCES();
    }
    try {
        if (!mFileSystem.exists(turi)) {
            LOG.error("File {} does not exist", turi);
            return -ErrorCodes.ENOENT();
        }
        final URIStatus status = mFileSystem.getStatus(turi);
        if (status.isFolder()) {
            LOG.error("File {} is a directory", turi);
            return -ErrorCodes.EISDIR();
        }
        synchronized (mOpenFiles) {
            if (mOpenFiles.size() == MAX_OPEN_FILES) {
                LOG.error("Cannot open {}: too many open files", turi);
                return ErrorCodes.EMFILE();
            }
            final OpenFileEntry ofe = new OpenFileEntry(mFileSystem.openFile(turi), null);
            mOpenFiles.put(mNextOpenFileId, ofe);
            fi.fh.set(mNextOpenFileId);
            // Assuming I will never wrap around (2^64 open files are quite a lot anyway)
            mNextOpenFileId += 1;
        }
    } catch (FileDoesNotExistException e) {
        LOG.debug("File does not exist {}", path, e);
        return -ErrorCodes.ENOENT();
    } catch (IOException e) {
        LOG.error("IOException on {}", path, e);
        return -ErrorCodes.EIO();
    } catch (AlluxioException e) {
        LOG.error("AlluxioException on {}", path, e);
        return -ErrorCodes.EFAULT();
    } catch (Throwable e) {
        LOG.error("Unexpected exception on {}", path, e);
        return -ErrorCodes.EFAULT();
    }
    return 0;
}

Example 24 with URIStatus

use of alluxio.client.file.URIStatus in project alluxio by Alluxio.

the class FileSystemIntegrationTest method renameFileTest1.

@Test
public void renameFileTest1() throws Exception {
    String uniqPath = PathUtils.uniqPath();
    AlluxioURI path1 = new AlluxioURI(uniqPath + 1);
    mFileSystem.createFile(path1, mWriteBoth).close();
    for (int k = 1; k < 10; k++) {
        AlluxioURI fileA = new AlluxioURI(uniqPath + k);
        AlluxioURI fileB = new AlluxioURI(uniqPath + (k + 1));
        URIStatus existingFile = mFileSystem.getStatus(fileA);
        long oldFileId = existingFile.getFileId();
        Assert.assertNotNull(existingFile);
        mFileSystem.rename(fileA, fileB);
        URIStatus renamedFile = mFileSystem.getStatus(fileB);
        Assert.assertNotNull(renamedFile);
        Assert.assertEquals(oldFileId, renamedFile.getFileId());
    }
}

Example 25 with URIStatus

use of alluxio.client.file.URIStatus in project alluxio by Alluxio.

the class FreeAndDeleteIntegrationTest method freeAndDeleteIntegration.

@Test
public void freeAndDeleteIntegration() throws Exception {
    HeartbeatScheduler.await(HeartbeatContext.WORKER_BLOCK_SYNC, 5, TimeUnit.SECONDS);
    HeartbeatScheduler.await(HeartbeatContext.MASTER_LOST_FILES_DETECTION, 5, TimeUnit.SECONDS);
    AlluxioURI filePath = new AlluxioURI(PathUtils.uniqPath());
    FileOutStream os = mFileSystem.createFile(filePath, mWriteBoth);
    os.write((byte) 0);
    os.write((byte) 1);
    os.close();
    URIStatus status = mFileSystem.getStatus(filePath);
    Assert.assertEquals(PersistenceState.PERSISTED.toString(), status.getPersistenceState());
    final Long blockId = status.getBlockIds().get(0);
    BlockMaster bm = mLocalAlluxioClusterResource.get().getMaster().getInternalMaster().getBlockMaster();
    BlockInfo blockInfo = bm.getBlockInfo(blockId);
    Assert.assertEquals(2, blockInfo.getLength());
    Assert.assertFalse(blockInfo.getLocations().isEmpty());
    final BlockWorker bw = mLocalAlluxioClusterResource.get().getWorker().getBlockWorker();
    Assert.assertTrue(bw.hasBlockMeta(blockId));
    Assert.assertTrue(bm.getLostBlocks().isEmpty());
    mFileSystem.free(filePath);
    IntegrationTestUtils.waitForBlocksToBeFreed(bw, blockId);
    status = mFileSystem.getStatus(filePath);
    // Verify block metadata in master is still present after block freed.
    Assert.assertEquals(1, status.getBlockIds().size());
    blockInfo = bm.getBlockInfo(status.getBlockIds().get(0));
    Assert.assertEquals(2, blockInfo.getLength());
    // Verify the block has been removed from all workers.
    Assert.assertTrue(blockInfo.getLocations().isEmpty());
    Assert.assertFalse(bw.hasBlockMeta(blockId));
    // Verify the removed block is added to LostBlocks list.
    Assert.assertTrue(bm.getLostBlocks().contains(blockInfo.getBlockId()));
    mFileSystem.delete(filePath);
    try {
        // File is immediately gone after delete.
        mFileSystem.getStatus(filePath);
        Assert.fail(String.format("Expected file %s being deleted but it was not.", filePath));
    } catch (FileDoesNotExistException e) {
    // expected
    }
    // Execute the lost files detection.
    HeartbeatScheduler.execute(HeartbeatContext.MASTER_LOST_FILES_DETECTION);
    // Verify the blocks are not in mLostBlocks.
    Assert.assertTrue(bm.getLostBlocks().isEmpty());
}