def test_push_producer_feedback(self):
string_file = BlockingStringWrite()
consumer = BackgroundFileConsumer(string_file, reactor=reactor)
try:
producer = NonCallableMock(
spec_set=["pauseProducing", "resumeProducing"])
resume_deferred = defer.Deferred()
producer.resumeProducing.side_effect = lambda: resume_deferred.callback(
None)
consumer.registerProducer(producer, True)
number_writes = 0
with string_file.write_lock:
for _ in range(consumer._PAUSE_ON_QUEUE_SIZE):
consumer.write("Foo")
number_writes += 1
producer.pauseProducing.assert_called_once()
yield string_file.wait_for_n_writes(number_writes)
yield resume_deferred
producer.resumeProducing.assert_called_once()
finally:
consumer.unregisterProducer()
yield consumer.wait()
self.assertTrue(string_file.closed)
def ensure_media_is_in_local_cache(self, file_info):
"""Ensures that the given file is in the local cache. Attempts to
download it from storage providers if it isn't.
Args:
file_info (FileInfo)
Returns:
Deferred[str]: Full path to local file
"""
path = self._file_info_to_path(file_info)
local_path = os.path.join(self.local_media_directory, path)
if os.path.exists(local_path):
defer.returnValue(local_path)
dirname = os.path.dirname(local_path)
if not os.path.exists(dirname):
os.makedirs(dirname)
for provider in self.storage_providers:
res = yield provider.fetch(path, file_info)
if res:
with res:
consumer = BackgroundFileConsumer(open(local_path, "w"))
yield res.write_to_consumer(consumer)
yield consumer.wait()
defer.returnValue(local_path)
raise Exception("file could not be found")
def ensure_media_is_in_local_cache(self, file_info):
"""Ensures that the given file is in the local cache. Attempts to
download it from storage providers if it isn't.
Args:
file_info (FileInfo)
Returns:
Deferred[str]: Full path to local file
"""
path = self._file_info_to_path(file_info)
local_path = os.path.join(self.local_media_directory, path)
if os.path.exists(local_path):
defer.returnValue(local_path)
dirname = os.path.dirname(local_path)
if not os.path.exists(dirname):
os.makedirs(dirname)
for provider in self.storage_providers:
res = yield provider.fetch(path, file_info)
if res:
with res:
consumer = BackgroundFileConsumer(
open(local_path, "wb"), self.hs.get_reactor()
)
yield res.write_to_consumer(consumer)
yield consumer.wait()
defer.returnValue(local_path)
raise Exception("file could not be found")
def test_push_producer_feedback(self):
string_file = BlockingStringWrite()
consumer = BackgroundFileConsumer(string_file)
try:
producer = NonCallableMock(spec_set=["pauseProducing", "resumeProducing"])
resume_deferred = defer.Deferred()
producer.resumeProducing.side_effect = lambda: resume_deferred.callback(None)
consumer.registerProducer(producer, True)
number_writes = 0
with string_file.write_lock:
for _ in range(consumer._PAUSE_ON_QUEUE_SIZE):
consumer.write("Foo")
number_writes += 1
producer.pauseProducing.assert_called_once()
yield string_file.wait_for_n_writes(number_writes)
yield resume_deferred
producer.resumeProducing.assert_called_once()
finally:
consumer.unregisterProducer()
yield consumer.wait()
self.assertTrue(string_file.closed)
def test_pull_consumer(self):
string_file = StringIO()
consumer = BackgroundFileConsumer(string_file, reactor=reactor)
try:
producer = DummyPullProducer()
yield producer.register_with_consumer(consumer)
yield producer.write_and_wait("Foo")
self.assertEqual(string_file.getvalue(), "Foo")
yield producer.write_and_wait("Bar")
self.assertEqual(string_file.getvalue(), "FooBar")
finally:
consumer.unregisterProducer()
yield consumer.wait()
self.assertTrue(string_file.closed)
def test_pull_consumer(self):
string_file = StringIO()
consumer = BackgroundFileConsumer(string_file)
try:
producer = DummyPullProducer()
yield producer.register_with_consumer(consumer)
yield producer.write_and_wait("Foo")
self.assertEqual(string_file.getvalue(), "Foo")
yield producer.write_and_wait("Bar")
self.assertEqual(string_file.getvalue(), "FooBar")
finally:
consumer.unregisterProducer()
yield consumer.wait()
self.assertTrue(string_file.closed)
def test_push_consumer(self):
string_file = BlockingStringWrite()
consumer = BackgroundFileConsumer(string_file, reactor=reactor)
try:
producer = NonCallableMock(spec_set=[])
consumer.registerProducer(producer, True)
consumer.write("Foo")
yield string_file.wait_for_n_writes(1)
self.assertEqual(string_file.buffer, "Foo")
consumer.write("Bar")
yield string_file.wait_for_n_writes(2)
self.assertEqual(string_file.buffer, "FooBar")
finally:
consumer.unregisterProducer()
yield consumer.wait()
self.assertTrue(string_file.closed)
def test_push_consumer(self):
string_file = BlockingStringWrite()
consumer = BackgroundFileConsumer(string_file)
try:
producer = NonCallableMock(spec_set=[])
consumer.registerProducer(producer, True)
consumer.write("Foo")
yield string_file.wait_for_n_writes(1)
self.assertEqual(string_file.buffer, "Foo")
consumer.write("Bar")
yield string_file.wait_for_n_writes(2)
self.assertEqual(string_file.buffer, "FooBar")
finally:
consumer.unregisterProducer()
yield consumer.wait()
self.assertTrue(string_file.closed)