def render(self, request):
if not self.producers:
for bucket, key in self.objects:
producer = AwsProducer(bucket, key)
self.producers.append(producer)
zipstream = ZipStream(request)
deferreds = []
for producer in self.producers:
d = zipstream.addProducer(producer)
deferreds.append(d)
deferredlist = DeferredList(deferreds)
deferredlist.addCallback(lambda _: zipstream.centralDirectory())
return deferredlist
def create_zipstream_from_tempfiles(self, num_files, min_size=0, max_size=10 * (1024 ** 2)):
consumer = TestConsumer()
zipstream = ZipStream(consumer)
deferreds = []
producers = {}
for i in range(num_files):
producersize = random.randint(min_size, max_size)
filename = make_random_temp_file(producersize)
producer = FileProducer(filename)
deferreds.append(zipstream.addProducer(producer))
producers.update({filename: producer})
self.tempfiles.append(filename)
deferredlist = DeferredList(deferreds)
deferredlist.addCallback(lambda _: zipstream.centralDirectory())
deferredlist.addCallback(lambda _: consumer.seek(0))
yield deferredlist
returnValue((zipstream, consumer, producers))