def test_filesystem(self):
hfile = Hfile(hostname, port, path, mode='w')
hfile.close()
fs = Hfilesystem(hostname, port)
self.assertTrue(fs.exists(path))
self.assertFalse(fs.exists(path + 'doesnotexist'))
self.assertTrue(fs.rename(path, path + 'renamed'))
self.assertTrue(fs.delete(path + 'renamed'))
self.assertFalse(fs.delete(path))
def test_filesystem(self):
hfile = Hfile(hostname, port, path, mode='w')
hfile.close()
fs = Hfilesystem(hostname, port)
self.assertTrue(fs.exists(path))
self.assertFalse(fs.exists(path + 'doesnotexist'))
self.assertTrue(fs.rename(path, path + 'renamed'))
self.assertTrue(fs.delete(path + 'renamed'))
self.assertFalse(fs.delete(path))
def StoreBlob(self, blob_key, blob_stream):
"""Store blob stream to disk.
Args:
blob_key: Blob key of blob to store.
blob_stream: Stream or stream-like object that will generate blob content.
"""
logging.debug('storing blob with key %s' %blob_key)
blob_key = self._BlobKey(blob_key)
blob_directory = self._DirectoryForBlob(blob_key)
if not self._fs.exists(blob_directory):
self._fs.mkdir(blob_directory)
blob_file = self._FileForBlob(blob_key)
hdfs_file = Hfile(self._server, self._port, blob_file, mode='w')
try:
while True:
block = blob_stream.read(1 << 20)
if not block:
break
hdfs_file.write(block)
finally:
hdfs_file.close()
def OpenBlob(self, blob_key):
"""Open blob file for streaming.
Args:
blob_key: Blob-key of existing blob to open for reading.
Returns:
Open file stream for reading blob from disk.
"""
logging.debug('reading blob with key %s' % blob_key)
return Hfile(self._server,
self._port,
self._FileForBlob(blob_key),
mode='r')
def StoreBlob(self, blob_key, blob_stream):
"""Store blob stream to disk.
Args:
blob_key: Blob key of blob to store.
blob_stream: Stream or stream-like object that will generate blob content.
"""
logging.debug('storing blob with key %s' % blob_key)
blob_key = self._BlobKey(blob_key)
blob_directory = self._DirectoryForBlob(blob_key)
if not self._fs.exists(blob_directory):
self._fs.mkdir(blob_directory)
blob_file = self._FileForBlob(blob_key)
hdfs_file = Hfile(self._server, self._port, blob_file, mode='w')
try:
while True:
block = blob_stream.read(1 << 20)
if not block:
break
hdfs_file.write(block)
finally:
hdfs_file.close()
