forked from LBRYCommunity/lbry-sdk
5520d518b5
cryptstream py3 support, mostly commenting out implements() lbry_file py3 support, mostly commenting out implements() file_manager py3 support, mostly commenting out implements() core py3 support, mostly commenting out implements() and fixing imports
229 lines
8.7 KiB
Python
229 lines
8.7 KiB
Python
import logging
|
|
|
|
from twisted.internet import defer
|
|
from twisted.protocols.basic import FileSender
|
|
from twisted.python.failure import Failure
|
|
from zope.interface import implements
|
|
|
|
from lbrynet import analytics
|
|
from lbrynet.core.Offer import Offer
|
|
from lbrynet.interfaces import IQueryHandlerFactory, IQueryHandler, IBlobSender
|
|
|
|
log = logging.getLogger(__name__)
|
|
|
|
|
|
class BlobRequestHandlerFactory(object):
|
|
#implements(IQueryHandlerFactory)
|
|
|
|
def __init__(self, blob_manager, wallet, payment_rate_manager, analytics_manager):
|
|
self.blob_manager = blob_manager
|
|
self.wallet = wallet
|
|
self.payment_rate_manager = payment_rate_manager
|
|
self.analytics_manager = analytics_manager
|
|
|
|
######### IQueryHandlerFactory #########
|
|
|
|
def build_query_handler(self):
|
|
q_h = BlobRequestHandler(
|
|
self.blob_manager, self.wallet, self.payment_rate_manager, self.analytics_manager)
|
|
return q_h
|
|
|
|
def get_primary_query_identifier(self):
|
|
return 'requested_blob'
|
|
|
|
def get_description(self):
|
|
return "Blob Uploader - uploads blobs"
|
|
|
|
|
|
class BlobRequestHandler(object):
|
|
#implements(IQueryHandler, IBlobSender)
|
|
PAYMENT_RATE_QUERY = 'blob_data_payment_rate'
|
|
BLOB_QUERY = 'requested_blob'
|
|
AVAILABILITY_QUERY = 'requested_blobs'
|
|
|
|
def __init__(self, blob_manager, wallet, payment_rate_manager, analytics_manager):
|
|
self.blob_manager = blob_manager
|
|
self.payment_rate_manager = payment_rate_manager
|
|
self.wallet = wallet
|
|
self.query_identifiers = [self.PAYMENT_RATE_QUERY, self.BLOB_QUERY, self.AVAILABILITY_QUERY]
|
|
self.analytics_manager = analytics_manager
|
|
self.peer = None
|
|
self.blob_data_payment_rate = None
|
|
self.read_handle = None
|
|
self.currently_uploading = None
|
|
self.file_sender = None
|
|
self.blob_bytes_uploaded = 0
|
|
self._blobs_requested = []
|
|
|
|
######### IQueryHandler #########
|
|
|
|
def register_with_request_handler(self, request_handler, peer):
|
|
self.peer = peer
|
|
request_handler.register_query_handler(self, self.query_identifiers)
|
|
request_handler.register_blob_sender(self)
|
|
|
|
def handle_queries(self, queries):
|
|
response = defer.succeed({})
|
|
log.debug("Handle query: %s", str(queries))
|
|
|
|
if self.AVAILABILITY_QUERY in queries:
|
|
self._blobs_requested = queries[self.AVAILABILITY_QUERY]
|
|
response.addCallback(lambda r: self._reply_to_availability(r, self._blobs_requested))
|
|
if self.PAYMENT_RATE_QUERY in queries:
|
|
offered_rate = queries[self.PAYMENT_RATE_QUERY]
|
|
offer = Offer(offered_rate)
|
|
if offer.rate is None:
|
|
log.warning("Empty rate offer")
|
|
response.addCallback(lambda r: self._handle_payment_rate_query(offer, r))
|
|
if self.BLOB_QUERY in queries:
|
|
incoming = queries[self.BLOB_QUERY]
|
|
response.addCallback(lambda r: self._reply_to_send_request(r, incoming))
|
|
return response
|
|
|
|
######### IBlobSender #########
|
|
|
|
def send_blob_if_requested(self, consumer):
|
|
if self.currently_uploading is not None:
|
|
return self.send_file(consumer)
|
|
return defer.succeed(True)
|
|
|
|
def cancel_send(self, err):
|
|
if self.currently_uploading is not None:
|
|
self.read_handle.close()
|
|
self.read_handle = None
|
|
self.currently_uploading = None
|
|
return err
|
|
|
|
######### internal #########
|
|
|
|
def _reply_to_availability(self, request, blobs):
|
|
d = self._get_available_blobs(blobs)
|
|
|
|
def set_available(available_blobs):
|
|
log.debug("available blobs: %s", str(available_blobs))
|
|
request.update({'available_blobs': available_blobs})
|
|
return request
|
|
|
|
d.addCallback(set_available)
|
|
return d
|
|
|
|
def _handle_payment_rate_query(self, offer, request):
|
|
blobs = self._blobs_requested
|
|
log.debug("Offered rate %f LBC/mb for %i blobs", offer.rate, len(blobs))
|
|
reply = self.payment_rate_manager.reply_to_offer(self.peer, blobs, offer)
|
|
if reply.is_accepted:
|
|
self.blob_data_payment_rate = offer.rate
|
|
request[self.PAYMENT_RATE_QUERY] = "RATE_ACCEPTED"
|
|
log.debug("Accepted rate: %f", offer.rate)
|
|
elif reply.is_too_low:
|
|
request[self.PAYMENT_RATE_QUERY] = "RATE_TOO_LOW"
|
|
log.debug("Reject rate: %f", offer.rate)
|
|
elif reply.is_unset:
|
|
log.warning("Rate unset")
|
|
request['incoming_blob'] = {'error': 'RATE_UNSET'}
|
|
log.debug("Returning rate query result: %s", str(request))
|
|
|
|
return request
|
|
|
|
def _handle_blob_query(self, response, query):
|
|
log.debug("Received the client's request to send a blob")
|
|
response['incoming_blob'] = {}
|
|
|
|
if self.blob_data_payment_rate is None:
|
|
response['incoming_blob'] = {'error': "RATE_UNSET"}
|
|
return response
|
|
else:
|
|
return self._send_blob(response, query)
|
|
|
|
def _send_blob(self, response, query):
|
|
d = self.blob_manager.get_blob(query)
|
|
d.addCallback(self.open_blob_for_reading, response)
|
|
return d
|
|
|
|
def open_blob_for_reading(self, blob, response):
|
|
response_fields = {}
|
|
d = defer.succeed(None)
|
|
if blob.get_is_verified():
|
|
read_handle = blob.open_for_reading()
|
|
if read_handle is not None:
|
|
self.currently_uploading = blob
|
|
self.read_handle = read_handle
|
|
log.info("Sending %s to %s", str(blob), self.peer)
|
|
response_fields['blob_hash'] = blob.blob_hash
|
|
response_fields['length'] = blob.length
|
|
response['incoming_blob'] = response_fields
|
|
d.addCallback(lambda _: response)
|
|
return d
|
|
log.debug("We can not send %s", str(blob))
|
|
response['incoming_blob'] = {'error': 'BLOB_UNAVAILABLE'}
|
|
d.addCallback(lambda _: response)
|
|
return d
|
|
|
|
def _reply_to_send_request(self, response, incoming):
|
|
response_fields = {}
|
|
response['incoming_blob'] = response_fields
|
|
|
|
if self.blob_data_payment_rate is None:
|
|
log.debug("Rate not set yet")
|
|
response['incoming_blob'] = {'error': 'RATE_UNSET'}
|
|
return defer.succeed(response)
|
|
else:
|
|
log.debug("Requested blob: %s", str(incoming))
|
|
d = self.blob_manager.get_blob(incoming)
|
|
d.addCallback(lambda blob: self.open_blob_for_reading(blob, response))
|
|
return d
|
|
|
|
def _get_available_blobs(self, requested_blobs):
|
|
d = self.blob_manager.completed_blobs(requested_blobs)
|
|
return d
|
|
|
|
def send_file(self, consumer):
|
|
|
|
def _send_file():
|
|
inner_d = start_transfer()
|
|
# TODO: if the transfer fails, check if it's because the connection was cut off.
|
|
# TODO: if so, perhaps bill the client
|
|
inner_d.addCallback(lambda _: set_expected_payment())
|
|
inner_d.addBoth(set_not_uploading)
|
|
return inner_d
|
|
|
|
def count_bytes(data):
|
|
uploaded = len(data)
|
|
self.blob_bytes_uploaded += uploaded
|
|
self.peer.update_stats('blob_bytes_uploaded', uploaded)
|
|
if self.analytics_manager is not None:
|
|
self.analytics_manager.add_observation(analytics.BLOB_BYTES_UPLOADED, uploaded)
|
|
return data
|
|
|
|
def start_transfer():
|
|
self.file_sender = FileSender()
|
|
log.debug("Starting the file upload")
|
|
assert self.read_handle is not None, \
|
|
"self.read_handle was None when trying to start the transfer"
|
|
d = self.file_sender.beginFileTransfer(self.read_handle, consumer, count_bytes)
|
|
return d
|
|
|
|
def set_expected_payment():
|
|
log.debug("Setting expected payment")
|
|
if (
|
|
self.blob_bytes_uploaded != 0 and self.blob_data_payment_rate is not None
|
|
and self.blob_data_payment_rate > 0
|
|
):
|
|
# TODO: explain why 2**20
|
|
self.wallet.add_expected_payment(self.peer,
|
|
self.currently_uploading.length * 1.0 *
|
|
self.blob_data_payment_rate / 2 ** 20)
|
|
self.blob_bytes_uploaded = 0
|
|
self.peer.update_stats('blobs_uploaded', 1)
|
|
return None
|
|
|
|
def set_not_uploading(reason=None):
|
|
if self.currently_uploading is not None:
|
|
self.read_handle.close()
|
|
self.read_handle = None
|
|
self.currently_uploading = None
|
|
self.file_sender = None
|
|
if reason is not None and isinstance(reason, Failure):
|
|
log.warning("Upload has failed. Reason: %s", reason.getErrorMessage())
|
|
|
|
return _send_file()
|