Example usage for java.io RandomAccessFile setLength

Introduction

In this page you can find the example usage for java.io RandomAccessFile setLength.

Prototype

public native void setLength(long newLength) throws IOException;

Source Link

Document

Sets the length of this file.

Usage

From source file:org.duracloud.mill.audit.generator.LogManagerImplTest.java

private void createFileOfLength(File file, long length) {
    try {/*from   w w w.  ja va 2s.com*/
        RandomAccessFile f = new RandomAccessFile(file, "rw");
        f.setLength(length);
        f.close();
    } catch (Exception e) {
        System.err.println(e);
    }

}

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From source file:org.finra.dm.core.AbstractCoreTest.java

/**
 * Creates a file of the specified size relative to the base directory.
 *
 * @param baseDirectory the local parent directory path, relative to which we want our file to be created
 * @param file the file path (including file name) relative to the base directory for the file to be created
 * @param size the file size in bytes// w  w w.  j  a v  a2  s. c  o  m
 *
 * @return the created file
 */
protected File createLocalFile(String baseDirectory, String file, long size) throws IOException {
    Path filePath = Paths.get(baseDirectory, file);
    // We don't check the "mkdirs" response because the directory may already exist which would return false.
    // But we want to create sub-directories if they don't yet exist which is why we're calling "mkdirs" in the first place.
    // If an actual directory couldn't be created, then the new file below will throw an exception anyway.
    filePath.toFile().getParentFile().mkdirs();
    RandomAccessFile randomAccessFile = new RandomAccessFile(filePath.toString(), "rw");
    randomAccessFile.setLength(size);
    randomAccessFile.close();
    return filePath.toFile();
}

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From source file:ch.cyberduck.core.io.FileBuffer.java

@Override
public void truncate(final Long length) {
    this.length = length;
    if (temporary.exists()) {
        try {//from w w w  .  j  av  a  2  s  .  c  o  m
            final RandomAccessFile file = random();
            if (length < file.length()) {
                // Truncate current
                file.setLength(length);
            }
        } catch (IOException e) {
            log.warn(String.format("Failure truncating file %s to %d", temporary, length));
        }
    }
}

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From source file:com.thoughtworks.go.config.GoConfigFileWriter.java

public synchronized void writeToConfigXmlFile(String content) {
    FileChannel channel = null;//  w  ww .j  a  v a  2s  . c  o  m
    FileOutputStream outputStream = null;
    FileLock lock = null;

    try {
        RandomAccessFile randomAccessFile = new RandomAccessFile(fileLocation(), "rw");
        channel = randomAccessFile.getChannel();
        lock = channel.lock();
        randomAccessFile.seek(0);
        randomAccessFile.setLength(0);
        outputStream = new FileOutputStream(randomAccessFile.getFD());

        IOUtils.write(content, outputStream, UTF_8);
    } catch (Exception e) {
        throw new RuntimeException(e);
    } finally {
        if (channel != null && lock != null) {
            try {
                lock.release();
                channel.close();
                IOUtils.closeQuietly(outputStream);
            } catch (IOException e) {
                LOGGER.error("Error occured when releasing file lock and closing file.", e);
            }
        }
    }
}

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From source file:org.apache.flume.channel.file.TestEventQueueBackingStoreFactory.java

@Test(expected = BadCheckpointException.class)
public void testTruncateMeta() throws Exception {
    EventQueueBackingStore backingStore = EventQueueBackingStoreFactory.get(checkpoint, 10, "test");
    backingStore.close();/*from w  w w . j av  a 2  s. c om*/
    Assert.assertTrue(checkpoint.exists());
    File metaFile = Serialization.getMetaDataFile(checkpoint);
    Assert.assertTrue(metaFile.length() != 0);
    RandomAccessFile writer = new RandomAccessFile(metaFile, "rw");
    writer.setLength(0);
    writer.getFD().sync();
    writer.close();
    backingStore = EventQueueBackingStoreFactory.get(checkpoint, 10, "test");
}

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From source file:org.apache.hadoop.hdfs.server.datanode.TestTransferBlock.java

public void testTransferZeroChecksumFile() throws IOException {
    for (DataNode dn : cluster.getDataNodes()) {
        dn.useInlineChecksum = false;/*from  w w w  .j  ava 2 s  . c o m*/
    }

    // create a new file in the root, write data, do no close
    String filestr = "/testTransferZeroChecksumFile";
    DistributedFileSystem dfs = (DistributedFileSystem) fileSystem;

    DFSTestUtil.createFile(dfs, new Path(filestr), 9L, (short) 1, 0L);

    BlockPathInfo blockPathInfo = DFSTestUtil.getBlockPathInfo(filestr, cluster, dfs.getClient());

    // Delete the checksum file
    RandomAccessFile meta = new RandomAccessFile(blockPathInfo.getMetaPath(), "rw");
    meta.setLength(0);
    meta.close();

    RandomAccessFile block = new RandomAccessFile(blockPathInfo.getBlockPath(), "rw");
    block.setLength(0);
    block.close();

    int ns = cluster.getNameNode().getNamespaceID();
    DataNode dnWithBlk = null, dnWithoutBlk = null;
    for (DataNode dn : cluster.getDataNodes()) {
        FSDataset fds = (FSDataset) dn.data;
        DatanodeBlockInfo dbi = fds.getDatanodeBlockInfo(ns, blockPathInfo);
        if (dbi != null) {
            dbi.syncInMemorySize();
            dnWithBlk = dn;
        } else {
            dnWithoutBlk = dn;
        }
    }
    if (dnWithoutBlk == null || dnWithBlk == null) {
        TestCase.fail();
    }
    DatanodeInfo[] list = new DatanodeInfo[1];
    for (DatanodeInfo di : dfs.getClient().datanodeReport(DatanodeReportType.LIVE)) {
        if (dnWithoutBlk.getPort() == di.getPort()) {
            list[0] = di;
            break;
        }
    }
    blockPathInfo.setNumBytes(0);
    dnWithBlk.transferBlocks(ns, new Block[] { blockPathInfo }, new DatanodeInfo[][] { list });

    long size = -1;
    for (int i = 0; i < 3; i++) {
        try {
            size = ((FSDataset) dnWithoutBlk.data).getFinalizedBlockLength(ns, blockPathInfo);
            if (size == 0) {
                break;
            }
        } catch (IOException ioe) {
        }

        if (i != 2) {
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        } else {
            TestCase.fail();
        }
    }
    TestCase.assertEquals(0, size);
}

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From source file:sernet.verinice.service.test.AttachmentTest.java

private Attachment createAttachment(Organization org) throws Exception {
    File f = File.createTempFile("veriniceAttachment", "test");
    f.deleteOnExit();/*  w  w  w .j  a  v a 2  s  .com*/
    RandomAccessFile raf = new RandomAccessFile(f, "rw");
    long length = Math.round(Math.random() * (1024 * 1024.0 * maxFileSizeInMb));
    raf.setLength(length); // create 1mb of trash data
    assertNotNull(f);
    assertNotNull(raf);

    // create AttachmentObject
    Attachment a = createAttachment(org, f);

    // save attachment
    a = saveAttachment(a);
    assertNotNull(a);

    // create and save file to attachment
    attachFileData(f, a);

    String hashSum = FileUtil.getMD5Checksum(f.getAbsolutePath());
    dbIdHashSumMap.put(a.getDbId(), hashSum);

    if (LOG.isDebugEnabled()) {
        LOG.debug("File created, length: " + length + ", path: " + f.getAbsolutePath() + ", hash sum: "
                + hashSum);
    }

    return a;
}

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From source file:org.apache.bookkeeper.bookie.EntryLogTest.java

@Test(timeout = 60000)
public void testCorruptEntryLog() throws Exception {
    File tmpDir = createTempDir("bkTest", ".dir");
    File curDir = Bookie.getCurrentDirectory(tmpDir);
    Bookie.checkDirectoryStructure(curDir);

    int gcWaitTime = 1000;
    ServerConfiguration conf = TestBKConfiguration.newServerConfiguration();
    conf.setGcWaitTime(gcWaitTime);/*w w  w  .j a va2 s. com*/
    conf.setLedgerDirNames(new String[] { tmpDir.toString() });
    Bookie bookie = new Bookie(conf);
    // create some entries
    EntryLogger logger = ((InterleavedLedgerStorage) bookie.ledgerStorage).entryLogger;
    logger.addEntry(1, generateEntry(1, 1));
    logger.addEntry(3, generateEntry(3, 1));
    logger.addEntry(2, generateEntry(2, 1));
    logger.flush();
    // now lets truncate the file to corrupt the last entry, which simulates a partial write
    File f = new File(curDir, "0.log");
    RandomAccessFile raf = new RandomAccessFile(f, "rw");
    raf.setLength(raf.length() - 10);
    raf.close();
    // now see which ledgers are in the log
    logger = new EntryLogger(conf, bookie.getLedgerDirsManager());

    EntryLogMetadata meta = logger.getEntryLogMetadata(0L);
    LOG.info("Extracted Meta From Entry Log {}", meta);
    assertNotNull(meta.getLedgersMap().get(1L));
    assertNull(meta.getLedgersMap().get(2L));
    assertNotNull(meta.getLedgersMap().get(3L));
}

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From source file:org.apache.hadoop.hdfs.server.datanode.TestTransferBlock.java

public void testTransferZeroChecksumFileInlineChecksum() throws IOException {
    for (DataNode dn : cluster.getDataNodes()) {
        dn.useInlineChecksum = true;//from w  w w. j a v a2 s .com
    }

    // create a new file in the root, write data, do no close
    String filestr = "/testTransferZeroChecksumFile";
    DistributedFileSystem dfs = (DistributedFileSystem) fileSystem;

    DFSTestUtil.createFile(dfs, new Path(filestr), 9L, (short) 1, 0L);

    LocatedBlocks locations = cluster.getNameNode().getBlockLocations(filestr, 0, Long.MAX_VALUE);
    LocatedBlock locatedblock = locations.getLocatedBlocks().get(0);

    int ns = cluster.getNameNode().getNamespaceID();
    DataNode dnWithBlk = null, dnWithoutBlk = null;
    for (DataNode dn : cluster.getDataNodes()) {
        FSDataset fds = (FSDataset) dn.data;
        DatanodeBlockInfo dbi = fds.getDatanodeBlockInfo(ns, locatedblock.getBlock());

        if (dbi != null) {
            RandomAccessFile block = new RandomAccessFile(dbi.getBlockDataFile().file.toString(), "rw");
            block.setLength(0);
            block.close();

            dbi.syncInMemorySize();
            dnWithBlk = dn;
        } else {
            dnWithoutBlk = dn;
        }
    }
    if (dnWithoutBlk == null || dnWithBlk == null) {
        TestCase.fail();
    }
    DatanodeInfo[] list = new DatanodeInfo[1];
    for (DatanodeInfo di : dfs.getClient().datanodeReport(DatanodeReportType.LIVE)) {
        if (dnWithoutBlk.getPort() == di.getPort()) {
            list[0] = di;
            break;
        }
    }
    locatedblock.getBlock().setNumBytes(0);
    dnWithBlk.transferBlocks(ns, new Block[] { locatedblock.getBlock() }, new DatanodeInfo[][] { list });

    long size = -1;
    for (int i = 0; i < 3; i++) {
        try {
            size = ((FSDataset) dnWithoutBlk.data).getFinalizedBlockLength(ns, locatedblock.getBlock());
            if (size == 0) {
                break;
            }
        } catch (IOException ioe) {
        }

        if (i != 2) {
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        } else {
            TestCase.fail();
        }
    }
    TestCase.assertEquals(0, size);
}

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From source file:tayler.TailerTest.java

protected void eraseFile(File file) throws IOException {
    RandomAccessFile raf = new RandomAccessFile(file, "rws");
    try {/*from ww w.j  av a  2s. c  o m*/
        raf.setLength(0);
        raf.getFD().sync();
    } finally {
        IOUtils.closeQuietly(raf);
    }
}

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