Examples with FileStore java.nio.file.FileStore used on opensource projects

Example 11 with FileStore

use of java.nio.file.FileStore in project jimfs by google.

the class JimfsUnixLikeFileSystemTest method testFileStore.

@Test
public void testFileStore() throws IOException {
    FileStore fileStore = Iterables.getOnlyElement(fs.getFileStores());
    assertThat(fileStore.name()).isEqualTo("jimfs");
    assertThat(fileStore.type()).isEqualTo("jimfs");
    assertThat(fileStore.isReadOnly()).isFalse();
    // 1 GB
    long totalSpace = 1024 * 1024 * 1024;
    assertThat(fileStore.getTotalSpace()).isEqualTo(totalSpace);
    assertThat(fileStore.getUnallocatedSpace()).isEqualTo(totalSpace);
    assertThat(fileStore.getUsableSpace()).isEqualTo(totalSpace);
    Files.write(fs.getPath("/foo"), new byte[10000]);
    assertThat(fileStore.getTotalSpace()).isEqualTo(totalSpace);
    // We wrote 10000 bytes, but since the file system allocates fixed size blocks, more than 10k
    // bytes may have been allocated. As such, the unallocated space after the write can be at most
    // maxUnallocatedSpace.
    assertThat(fileStore.getUnallocatedSpace() <= totalSpace - 10000).isTrue();
    // Usable space is at most unallocated space. (In this case, it's currently exactly unallocated
    // space, but that's not required.)
    assertThat(fileStore.getUsableSpace() <= fileStore.getUnallocatedSpace()).isTrue();
    Files.delete(fs.getPath("/foo"));
    assertThat(fileStore.getTotalSpace()).isEqualTo(totalSpace);
    assertThat(fileStore.getUnallocatedSpace()).isEqualTo(totalSpace);
    assertThat(fileStore.getUsableSpace()).isEqualTo(totalSpace);
}

Example 12 with FileStore

use of java.nio.file.FileStore in project robovm by robovm.

the class RamDiskTools method setupRamDisk.

/**
     * Checks if a RAM disk is available and prunes it if necessary.
     */
public void setupRamDisk(Config config, File cacheDir, File tmpDir) {
    this.newCacheDir = cacheDir;
    this.newTmpDir = tmpDir;
    if (OS.getDefaultOS() != OS.macosx) {
        return;
    }
    File volume = new File(ROBOVM_RAM_DISK_PATH);
    if (!volume.exists()) {
        try {
            FileStore store = Files.getFileStore(new File(System.getProperty("user.home")).toPath());
            String plist = new Executor(Logger.NULL_LOGGER, "diskutil").args("info", "-plist", store.name()).execCapture();
            NSDictionary dict = (NSDictionary) PropertyListParser.parse(plist.getBytes("UTF-8"));
            NSObject value = dict.objectForKey("SolidState");
            if (value == null || (value instanceof NSNumber && !((NSNumber) value).boolValue())) {
                // @formatter:off
                config.getLogger().warn("RoboVM has detected that you are running on a slow HDD. Please consider mounting a RAM disk.\n" + "To create a 2GB RAM disk, run this in your terminal:\n" + "SIZE=2048 ; diskutil erasevolume HFS+ 'RoboVM RAM Disk' `hdiutil attach -nomount ram://$((SIZE * 2048))`\n" + "See http://docs.robovm.com/ for more info");
            // @formatter:on
            }
        } catch (Throwable t) {
            // nothing to do here, can't decide if we are on a SSD or HDD
            t.printStackTrace();
        }
        return;
    }
    try {
        FileStore store = Files.getFileStore(volume.toPath());
        if (store.getUsableSpace() < MIN_FREE_SPACE) {
            cleanRamDisk(store, volume, config);
            if (store.getUsableSpace() < MIN_FREE_SPACE) {
                config.getLogger().info("Couldn't free enough space on RAM disk, using hard drive");
                return;
            }
        }
        File newCacheDir = new File(volume, "cache");
        if (!newCacheDir.exists() && !newCacheDir.mkdirs()) {
            config.getLogger().info("Couldn't create cache directory on RAM disk, using hard drive");
            return;
        }
        File newTmpDir = new File(volume, "tmp");
        if (!newTmpDir.exists() && !newTmpDir.mkdirs()) {
            config.getLogger().info("Couldn't create tmp directory on RAM disk, using hard drive");
            return;
        }
        newTmpDir = new File(newTmpDir, tmpDir.getAbsolutePath());
        config.getLogger().info("Using RAM disk at %s for cache and tmp directory", ROBOVM_RAM_DISK_PATH);
        this.newCacheDir = newCacheDir;
        this.newTmpDir = newTmpDir;
    } catch (Throwable t) {
        config.getLogger().error("Couldn't setup RAM disk, using hard drive, %s", t.getMessage());
        this.newCacheDir = cacheDir;
        this.newTmpDir = tmpDir;
    }
}

Example 13 with FileStore

use of java.nio.file.FileStore in project lucene-solr by apache.

the class IOUtils method getFileStore.

// Files.getFileStore(Path) useless here!
// don't complain, just try it yourself
static FileStore getFileStore(Path path) throws IOException {
    FileStore store = Files.getFileStore(path);
    String mount = getMountPoint(store);
    // find the "matching" FileStore from system list, it's the one we want, but only return
    // that if it's unambiguous (only one matching):
    FileStore sameMountPoint = null;
    for (FileStore fs : path.getFileSystem().getFileStores()) {
        if (mount.equals(getMountPoint(fs))) {
            if (sameMountPoint == null) {
                sameMountPoint = fs;
            } else {
                // fall back to crappy one we got from Files.getFileStore
                return store;
            }
        }
    }
    if (sameMountPoint != null) {
        // ok, we found only one, use it:
        return sameMountPoint;
    } else {
        // fall back to crappy one we got from Files.getFileStore
        return store;
    }
}

Example 14 with FileStore

use of java.nio.file.FileStore in project lucene-solr by apache.

the class TestIOUtils method testSymlinkSSD.

public void testSymlinkSSD() throws Exception {
    assumeFalse("windows is not supported", Constants.WINDOWS);
    Path dir = createTempDir();
    dir = FilterPath.unwrap(dir).toRealPath();
    // fake SSD with a symlink mount (Ubuntu-like):
    Random rnd = random();
    String partitionUUID = new UUID(rnd.nextLong(), rnd.nextLong()).toString();
    FileStore root = new MockFileStore(dir.toString() + " (/dev/disk/by-uuid/" + partitionUUID + ")", "btrfs", "/dev/disk/by-uuid/" + partitionUUID);
    // make a fake /dev/sda1 for it
    Path devdir = dir.resolve("dev");
    Files.createDirectories(devdir);
    Path deviceFile = devdir.resolve("sda1");
    Files.createFile(deviceFile);
    // create a symlink to the above device file
    Path symlinkdir = devdir.resolve("disk").resolve("by-uuid");
    Files.createDirectories(symlinkdir);
    try {
        Files.createSymbolicLink(symlinkdir.resolve(partitionUUID), deviceFile);
    } catch (UnsupportedOperationException | IOException e) {
        assumeNoException("test requires filesystem that supports symbolic links", e);
    }
    // make a fake /sys/block/sda/queue/rotational file for it
    Path sysdir = dir.resolve("sys").resolve("block").resolve("sda").resolve("queue");
    Files.createDirectories(sysdir);
    try (OutputStream o = Files.newOutputStream(sysdir.resolve("rotational"))) {
        o.write("0\n".getBytes(StandardCharsets.US_ASCII));
    }
    Map<String, FileStore> mappings = Collections.singletonMap(dir.toString(), root);
    FileSystem mockLinux = new MockLinuxFileSystemProvider(dir.getFileSystem(), mappings, dir).getFileSystem(null);
    Path mockPath = mockLinux.getPath(dir.toString());
    assertFalse(IOUtils.spinsLinux(mockPath));
}

Example 15 with FileStore

use of java.nio.file.FileStore in project lucene-solr by apache.

the class TestIOUtils method testManyPartitions.

public void testManyPartitions() throws Exception {
    assumeFalse("windows is not supported", Constants.WINDOWS);
    Path dir = createTempDir();
    dir = FilterPath.unwrap(dir).toRealPath();
    // fake ssd
    FileStore root = new MockFileStore(dir.toString() + " (/dev/zzz12)", "zfs", "/dev/zzz12");
    // make a fake /dev/zzz11 for it
    Path devdir = dir.resolve("dev");
    Files.createDirectories(devdir);
    Files.createFile(devdir.resolve("zzz12"));
    // make a fake /sys/block/zzz/queue/rotational file for it
    Path sysdir = dir.resolve("sys").resolve("block").resolve("zzz").resolve("queue");
    Files.createDirectories(sysdir);
    try (OutputStream o = Files.newOutputStream(sysdir.resolve("rotational"))) {
        o.write("0\n".getBytes(StandardCharsets.US_ASCII));
    }
    Map<String, FileStore> mappings = Collections.singletonMap(dir.toString(), root);
    FileSystem mockLinux = new MockLinuxFileSystemProvider(dir.getFileSystem(), mappings, dir).getFileSystem(null);
    Path mockPath = mockLinux.getPath(dir.toString());
    assertFalse(IOUtils.spinsLinux(mockPath));
}