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# Copyright 2016 Amazon.com, Inc. or its affiliates. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"). You
# may not use this file except in compliance with the License. A copy of
# the License is located at
#
# http://aws.amazon.com/apache2.0/
#
# or in the "license" file accompanying this file. This file is
# distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF
# ANY KIND, either express or implied. See the License for the specific
# language governing permissions and limitations under the License.
import threading
import time
from concurrent.futures import CancelledError
from io import BytesIO
from s3transfer.manager import TransferConfig
from tests import (
NonSeekableReader,
RecordingSubscriber,
skip_if_using_serial_implementation,
)
from tests.integration import (
BaseTransferManagerIntegTest,
WaitForTransferStart,
)
class TestUpload(BaseTransferManagerIntegTest):
def setUp(self):
super().setUp()
self.multipart_threshold = 5 * 1024 * 1024
self.config = TransferConfig(
multipart_threshold=self.multipart_threshold
)
def get_input_fileobj(self, size, name=''):
return self.files.create_file_with_size(name, size)
def test_upload_below_threshold(self):
transfer_manager = self.create_transfer_manager(self.config)
file = self.get_input_fileobj(size=1024 * 1024, name='1mb.txt')
future = transfer_manager.upload(file, self.bucket_name, '1mb.txt')
self.addCleanup(self.delete_object, '1mb.txt')
future.result()
self.assertTrue(self.object_exists('1mb.txt'))
def test_upload_above_threshold(self):
transfer_manager = self.create_transfer_manager(self.config)
file = self.get_input_fileobj(size=20 * 1024 * 1024, name='20mb.txt')
future = transfer_manager.upload(file, self.bucket_name, '20mb.txt')
self.addCleanup(self.delete_object, '20mb.txt')
future.result()
self.assertTrue(self.object_exists('20mb.txt'))
@skip_if_using_serial_implementation(
'Exception is thrown once the transfer is submitted. '
'However for the serial implementation, transfers are performed '
'in main thread meaning the transfer will complete before the '
'KeyboardInterrupt being thrown.'
)
def test_large_upload_exits_quicky_on_exception(self):
transfer_manager = self.create_transfer_manager(self.config)
filename = self.get_input_fileobj(
name='foo.txt', size=20 * 1024 * 1024
)
timeout = 10
bytes_transferring = threading.Event()
subscriber = WaitForTransferStart(bytes_transferring)
try:
with transfer_manager:
future = transfer_manager.upload(
filename,
self.bucket_name,
'20mb.txt',
subscribers=[subscriber],
)
if not bytes_transferring.wait(timeout):
future.cancel()
raise RuntimeError(
"Download transfer did not start after waiting for "
"%s seconds." % timeout
)
# Raise an exception which should cause the preceding
# download to cancel and exit quickly
start_time = time.time()
raise KeyboardInterrupt()
except KeyboardInterrupt:
pass
end_time = time.time()
# The maximum time allowed for the transfer manager to exit.
# This means that it should take less than a couple second after
# sleeping to exit.
max_allowed_exit_time = 5
actual_time_to_exit = end_time - start_time
self.assertLess(
actual_time_to_exit,
max_allowed_exit_time,
"Failed to exit under {}. Instead exited in {}.".format(
max_allowed_exit_time, actual_time_to_exit
),
)
try:
future.result()
self.skipTest(
'Upload completed before interrupted and therefore '
'could not cancel the upload'
)
except CancelledError as e:
self.assertEqual(str(e), 'KeyboardInterrupt()')
# If the transfer did get cancelled,
# make sure the object does not exist.
self.assertTrue(self.object_not_exists('20mb.txt'))
@skip_if_using_serial_implementation(
'Exception is thrown once the transfers are submitted. '
'However for the serial implementation, transfers are performed '
'in main thread meaning the transfers will complete before the '
'KeyboardInterrupt being thrown.'
)
def test_many_files_exits_quicky_on_exception(self):
# Set the max request queue size and number of submission threads
# to something small to simulate having a large queue
# of transfer requests to complete and it is backed up.
self.config.max_request_queue_size = 1
self.config.max_submission_concurrency = 1
transfer_manager = self.create_transfer_manager(self.config)
fileobjs = []
keynames = []
futures = []
for i in range(10):
filename = 'file' + str(i)
keynames.append(filename)
fileobjs.append(
self.get_input_fileobj(name=filename, size=1024 * 1024)
)
try:
with transfer_manager:
for i, fileobj in enumerate(fileobjs):
futures.append(
transfer_manager.upload(
fileobj, self.bucket_name, keynames[i]
)
)
# Raise an exception which should cause the preceding
# transfer to cancel and exit quickly
start_time = time.time()
raise KeyboardInterrupt()
except KeyboardInterrupt:
pass
end_time = time.time()
# The maximum time allowed for the transfer manager to exit.
# This means that it should take less than a couple seconds to exit.
max_allowed_exit_time = 5
self.assertLess(
end_time - start_time,
max_allowed_exit_time,
"Failed to exit under {}. Instead exited in {}.".format(
max_allowed_exit_time, end_time - start_time
),
)
# Make sure at least one of the futures got cancelled
with self.assertRaisesRegex(CancelledError, 'KeyboardInterrupt()'):
for future in futures:
future.result()
# For the transfer that did get cancelled, make sure the object
# does not exist.
self.assertTrue(self.object_not_exists(future.meta.call_args.key))
def test_progress_subscribers_on_upload(self):
subscriber = RecordingSubscriber()
transfer_manager = self.create_transfer_manager(self.config)
file = self.get_input_fileobj(size=20 * 1024 * 1024, name='20mb.txt')
future = transfer_manager.upload(
file, self.bucket_name, '20mb.txt', subscribers=[subscriber]
)
self.addCleanup(self.delete_object, '20mb.txt')
future.result()
# The callback should have been called enough times such that
# the total amount of bytes we've seen (via the "amount"
# arg to the callback function) should be the size
# of the file we uploaded.
self.assertEqual(subscriber.calculate_bytes_seen(), 20 * 1024 * 1024)
class TestUploadSeekableStream(TestUpload):
def get_input_fileobj(self, size, name=''):
return BytesIO(b'0' * size)
class TestUploadNonSeekableStream(TestUpload):
def get_input_fileobj(self, size, name=''):
return NonSeekableReader(b'0' * size)
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