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# -------------------------------------------------------------------------
# Copyright (c) Microsoft Corporation. All rights reserved.
# Licensed under the MIT License. See License.txt in the project root for
# license information.
# --------------------------------------------------------------------------
import platform
import re
import unittest
from os import urandom
import pytest
from azure.core.exceptions import ResourceExistsError
from azure.core.pipeline.policies import HTTPPolicy
from azure.storage.blob._shared.base_client import _format_shared_key_credential
from azure.storage.filedatalake import DataLakeServiceClient
from devtools_testutils.storage import StorageRecordedTestCase
from settings.testcase import DataLakePreparer
# ------------------------------------------------------------------------------
TEST_DIRECTORY_PREFIX = 'directory'
TEST_FILE_PREFIX = 'file'
FILE_PATH = 'file_output.temp.dat'
LARGEST_BLOCK_SIZE = 4000 * 1024 * 1024
# ------------------------------------------------------------------------------
class TestLargeFile(StorageRecordedTestCase):
def _setUp(self, account_name, account_key):
url = self.account_url(account_name, 'dfs')
self.payload_dropping_policy = PayloadDroppingPolicy()
credential_policy = _format_shared_key_credential(account_name,
account_key)
self.dsc = DataLakeServiceClient(url,
credential=account_key,
logging_enable=True,
_additional_pipeline_policies=[self.payload_dropping_policy, credential_policy])
self.config = self.dsc._config
self.file_system_name = self.get_resource_name('filesystem')
if not self.is_playback():
file_system = self.dsc.get_file_system_client(self.file_system_name)
try:
file_system.create_file_system(timeout=5)
except ResourceExistsError:
pass
def tearDown(self):
if not self.is_playback():
try:
self.dsc.delete_file_system(self.file_system_name)
except:
pass
return super(TestLargeFile, self).tearDown()
@pytest.mark.live_test_only
@DataLakePreparer()
def test_append_large_stream_without_network(self, **kwargs):
datalake_storage_account_name = kwargs.pop("datalake_storage_account_name")
datalake_storage_account_key = kwargs.pop("datalake_storage_account_key")
self._setUp(datalake_storage_account_name, datalake_storage_account_key)
directory_name = self.get_resource_name(TEST_DIRECTORY_PREFIX)
# Create a directory to put the file under that
directory_client = self.dsc.get_directory_client(self.file_system_name, directory_name)
directory_client.create_directory()
file_client = directory_client.get_file_client('filename')
file_client.create_file()
data = LargeStream(LARGEST_BLOCK_SIZE)
# Act
response = file_client.append_data(data, 0, LARGEST_BLOCK_SIZE)
assert response is not None
assert self.payload_dropping_policy.append_counter == 1
assert self.payload_dropping_policy.append_sizes[0] == LARGEST_BLOCK_SIZE
@pytest.mark.skipif(platform.python_implementation() == "PyPy", reason="Test failing on Pypy3 Linux, skip to investigate")
@pytest.mark.live_test_only
@DataLakePreparer()
def test_upload_large_stream_without_network(self, **kwargs):
datalake_storage_account_name = kwargs.pop("datalake_storage_account_name")
datalake_storage_account_key = kwargs.pop("datalake_storage_account_key")
self._setUp(datalake_storage_account_name, datalake_storage_account_key)
directory_name = self.get_resource_name(TEST_DIRECTORY_PREFIX)
# Create a directory to put the file under that
directory_client = self.dsc.get_directory_client(self.file_system_name, directory_name)
directory_client.create_directory()
file_client = directory_client.get_file_client('filename')
file_client.create_file()
length = 2*LARGEST_BLOCK_SIZE
data = LargeStream(length)
# Act
response = file_client.upload_data(data, length, overwrite=True, chunk_size=LARGEST_BLOCK_SIZE)
assert response is not None
assert self.payload_dropping_policy.append_counter == 2
assert self.payload_dropping_policy.append_sizes[0] == LARGEST_BLOCK_SIZE
assert self.payload_dropping_policy.append_sizes[1] == LARGEST_BLOCK_SIZE
class LargeStream:
def __init__(self, length, initial_buffer_length=1024*1024):
self._base_data = urandom(initial_buffer_length)
self._base_data_length = initial_buffer_length
self._position = 0
self._remaining = length
def read(self, size=None):
if self._remaining == 0:
return b""
if size is None:
e = self._base_data_length
else:
e = size
e = min(e, self._remaining)
if e > self._base_data_length:
self._base_data = urandom(e)
self._base_data_length = e
self._remaining = self._remaining - e
return self._base_data[:e]
def remaining(self):
return self._remaining
class PayloadDroppingPolicy(HTTPPolicy):
def __init__(self):
self.append_counter = 0
self.append_sizes = []
self.dummy_body = "dummy_body"
def send(self, request): # type: (PipelineRequest) -> PipelineResponse
if _is_append_request(request):
if request.http_request.body:
position = self.append_counter*len(self.dummy_body)
request.http_request.url = re.sub(r'position=\d+', "position=" + str(position), request.http_request.url)
self.append_sizes.append(_get_body_length(request))
replacement = self.dummy_body
request.http_request.body = replacement
request.http_request.headers["Content-Length"] = str(len(replacement))
self.append_counter = self.append_counter + 1
if _is_flush_request(request):
position = self.append_counter * len(self.dummy_body)
request.http_request.url = re.sub(r'position=\d+', "position=" + str(position), request.http_request.url)
return self.next.send(request)
def _is_append_request(request):
query = request.http_request.query
return query and "action" in query and query["action"] == "append"
def _is_flush_request(request):
query = request.http_request.query
return query and "action" in query and query["action"] == "flush"
def _get_body_length(request):
body = request.http_request.body
length = 0
if hasattr(body, "read"):
chunk = body.read(10*1024*1024)
while chunk:
length = length + len(chunk)
chunk = body.read(10 * 1024 * 1024)
else:
length = len(body)
return length
# ------------------------------------------------------------------------------
if __name__ == '__main__':
unittest.main()
|
