/** Test <code>void read()</code>. Read from remote data server. */
@Test
public void readTest4() throws IOException, TachyonException {
String uniqPath = PathUtils.uniqPath();
for (int k = MIN_LEN + DELTA; k <= MAX_LEN; k += DELTA) {
TachyonFile f =
TachyonFSTestUtils.createByteFile(mTfs, uniqPath + "/file_" + k, k, mWriteTachyon);
long blockId = mTfs.getInfo(f).getBlockIds().get(0);
BlockInfo info = TachyonBlockStore.get().getInfo(blockId);
RemoteBlockInStream is =
new RemoteBlockInStream(
info.getBlockId(), info.getLength(), info.getLocations().get(0).getWorkerAddress());
byte[] ret = new byte[k];
int value = is.read();
int cnt = 0;
while (value != -1) {
Assert.assertTrue(value >= 0);
Assert.assertTrue(value < 256);
ret[cnt++] = (byte) value;
value = is.read();
}
Assert.assertEquals(cnt, k);
Assert.assertTrue(BufferUtils.equalIncreasingByteArray(k, ret));
is.close();
Assert.assertTrue(mTfs.getInfo(f).getInMemoryPercentage() == 100);
}
}
/**
* Displays the file's all blocks info
*
* @param path The TachyonURI path as the input of the command
* @return 0 if command is successful, -1 if an error occurred.
* @throws IOException
*/
public int fileinfo(TachyonURI path) throws IOException {
TachyonFile fd;
FileInfo fInfo;
try {
fd = mTfs.open(path);
if (fd == null) {
System.out.println(ExceptionMessage.PATH_DOES_NOT_EXIST.getMessage(path));
return -1;
}
fInfo = mTfs.getInfo(fd);
} catch (TachyonException e) {
throw new IOException(e);
}
if (fInfo.isFolder) {
System.out.println(path + " is a directory path so does not have file blocks.");
return -1;
}
System.out.println(path + " with file id " + fd.getFileId() + " has the following blocks: ");
for (long blockId : fInfo.getBlockIds()) {
System.out.println(TachyonBlockStore.get().getInfo(blockId));
}
return 0;
}
/**
* Get the capacity of the TachyonFileSystem
*
* @return 0 if command is successful, -1 if an error occurred.
*/
public int getCapacityBytes() {
try {
long capacityBytes = TachyonBlockStore.get().getCapacityBytes();
System.out.println("Capacity Bytes: " + capacityBytes);
return 0;
} catch (IOException ioe) {
return -1;
}
}
/**
* Get number of bytes used in the TachyonFileSystem
*
* @return 0 if command is successful, -1 if an error occurred.
*/
public int getUsedBytes() {
try {
long usedBytes = TachyonBlockStore.get().getUsedBytes();
System.out.println("Used Bytes: " + usedBytes);
return 0;
} catch (IOException ioe) {
return -1;
}
}
@Override
void runCommand(TachyonURI path) throws IOException {
TachyonFile fd;
FileInfo fInfo;
try {
fd = mTfs.open(path);
fInfo = mTfs.getInfo(fd);
} catch (TachyonException e) {
throw new IOException(e.getMessage());
}
if (fInfo.isFolder) {
throw new IOException(path + " is a directory path so does not have file blocks.");
}
System.out.println(fInfo);
System.out.println("Containing the following blocks: ");
for (long blockId : fInfo.getBlockIds()) {
System.out.println(TachyonBlockStore.get().getInfo(blockId));
}
}
/**
* Displays a list of hosts that have the file specified in argv stored.
*
* @param path The TachyonURI path as the input of the command
* @return 0 if command is successful, -1 if an error occurred.
* @throws IOException
*/
public int location(TachyonURI path) throws IOException {
TachyonFile fd;
FileInfo fInfo;
try {
fd = mTfs.open(path);
if (fd == null) {
System.out.println(ExceptionMessage.PATH_DOES_NOT_EXIST.getMessage(path));
return -1;
}
fInfo = mTfs.getInfo(fd);
} catch (TachyonException e) {
throw new IOException(e);
}
System.out.println(path + " with file id " + fd.getFileId() + " is on nodes: ");
for (long blockId : fInfo.getBlockIds()) {
for (BlockLocation location : TachyonBlockStore.get().getInfo(blockId).getLocations()) {
System.out.println(location.getWorkerAddress().getHost());
}
}
return 0;
}
/** Test <code>void read(byte[] b, int off, int len)</code>. Read from remote data server. */
@Test
public void readTest6() throws IOException, TachyonException {
String uniqPath = PathUtils.uniqPath();
for (int k = MIN_LEN + DELTA; k <= MAX_LEN; k += DELTA) {
TachyonFile f =
TachyonFSTestUtils.createByteFile(mTfs, uniqPath + "/file_" + k, k, mWriteTachyon);
long blockId = mTfs.getInfo(f).getBlockIds().get(0);
BlockInfo info = TachyonBlockStore.get().getInfo(blockId);
RemoteBlockInStream is =
new RemoteBlockInStream(
info.getBlockId(), info.getLength(), info.getLocations().get(0).getWorkerAddress());
byte[] ret = new byte[k / 2];
int start = 0;
while (start < k / 2) {
int read = is.read(ret, 0, (k / 2) - start);
Assert.assertTrue(BufferUtils.equalIncreasingByteArray(start, read, ret));
start += read;
}
is.close();
Assert.assertTrue(mTfs.getInfo(f).getInMemoryPercentage() == 100);
}
}
@Override
public void run(String... args) throws IOException {
long capacityBytes = TachyonBlockStore.get().getCapacityBytes();
System.out.println("Capacity Bytes: " + capacityBytes);
}