forked from LBRYCommunity/lbry-sdk
132 lines
No EOL
4.9 KiB
Python
132 lines
No EOL
4.9 KiB
Python
"""
|
|
Download LBRY Files from LBRYnet and save them to disk.
|
|
"""
|
|
|
|
from zope.interface import implements
|
|
from lbrynet.core.client.StreamProgressManager import FullStreamProgressManager
|
|
from lbrynet.lbryfile.client.LBRYFileDownloader import LBRYFileSaver, LBRYFileDownloader
|
|
from lbrynet.lbryfilemanager.LBRYFileStatusReport import LBRYFileStatusReport
|
|
from lbrynet.interfaces import IStreamDownloaderFactory
|
|
from lbrynet.lbryfile.StreamDescriptor import save_sd_info
|
|
from twisted.internet import defer
|
|
|
|
|
|
class ManagedLBRYFileDownloader(LBRYFileSaver):
|
|
|
|
STATUS_RUNNING = "running"
|
|
STATUS_STOPPED = "stopped"
|
|
STATUS_FINISHED = "finished"
|
|
|
|
def __init__(self, stream_hash, peer_finder, rate_limiter, blob_manager, stream_info_manager,
|
|
lbry_file_manager, payment_rate_manager, wallet, download_directory, upload_allowed,
|
|
file_name=None):
|
|
LBRYFileSaver.__init__(self, stream_hash, peer_finder, rate_limiter, blob_manager,
|
|
stream_info_manager, payment_rate_manager, wallet, download_directory,
|
|
upload_allowed, file_name)
|
|
self.lbry_file_manager = lbry_file_manager
|
|
self.saving_status = False
|
|
|
|
def restore(self):
|
|
d = self.lbry_file_manager.get_lbry_file_status(self.stream_hash)
|
|
|
|
def restore_status(status):
|
|
if status == ManagedLBRYFileDownloader.STATUS_RUNNING:
|
|
return self.start()
|
|
elif status == ManagedLBRYFileDownloader.STATUS_STOPPED:
|
|
return defer.succeed(False)
|
|
elif status == ManagedLBRYFileDownloader.STATUS_FINISHED:
|
|
self.completed = True
|
|
return defer.succeed(True)
|
|
|
|
d.addCallback(restore_status)
|
|
return d
|
|
|
|
def stop(self, err=None, change_status=True):
|
|
|
|
def set_saving_status_done():
|
|
self.saving_status = False
|
|
|
|
d = LBRYFileDownloader.stop(self, err=err) # LBRYFileSaver deletes metadata when it's stopped. We don't want that here.
|
|
if change_status is True:
|
|
self.saving_status = True
|
|
d.addCallback(lambda _: self._save_status())
|
|
d.addCallback(lambda _: set_saving_status_done())
|
|
return d
|
|
|
|
def status(self):
|
|
def find_completed_blobhashes(blobs):
|
|
blobhashes = [b[0] for b in blobs if b[0] is not None]
|
|
|
|
def get_num_completed(completed_blobs):
|
|
return len(completed_blobs), len(blobhashes)
|
|
|
|
inner_d = self.blob_manager.completed_blobs(blobhashes)
|
|
inner_d.addCallback(get_num_completed)
|
|
return inner_d
|
|
|
|
def make_full_status(progress):
|
|
num_completed = progress[0]
|
|
num_known = progress[1]
|
|
if self.completed is True:
|
|
s = "completed"
|
|
elif self.stopped is True:
|
|
s = "stopped"
|
|
else:
|
|
s = "running"
|
|
status = LBRYFileStatusReport(self.file_name, num_completed, num_known, s)
|
|
return status
|
|
|
|
d = self.stream_info_manager.get_blobs_for_stream(self.stream_hash)
|
|
d.addCallback(find_completed_blobhashes)
|
|
d.addCallback(make_full_status)
|
|
return d
|
|
|
|
def _start(self):
|
|
|
|
d = LBRYFileSaver._start(self)
|
|
|
|
d.addCallback(lambda _: self._save_status())
|
|
|
|
return d
|
|
|
|
def _get_finished_deferred_callback_value(self):
|
|
if self.completed is True:
|
|
return "Download successful"
|
|
else:
|
|
return "Download stopped"
|
|
|
|
def _save_status(self):
|
|
if self.completed is True:
|
|
s = ManagedLBRYFileDownloader.STATUS_FINISHED
|
|
elif self.stopped is True:
|
|
s = ManagedLBRYFileDownloader.STATUS_STOPPED
|
|
else:
|
|
s = ManagedLBRYFileDownloader.STATUS_RUNNING
|
|
return self.lbry_file_manager.change_lbry_file_status(self.stream_hash, s)
|
|
|
|
def _get_progress_manager(self, download_manager):
|
|
return FullStreamProgressManager(self._finished_downloading, self.blob_manager, download_manager)
|
|
|
|
|
|
class ManagedLBRYFileDownloaderFactory(object):
|
|
implements(IStreamDownloaderFactory)
|
|
|
|
def __init__(self, lbry_file_manager):
|
|
self.lbry_file_manager = lbry_file_manager
|
|
|
|
def can_download(self, sd_validator):
|
|
return True
|
|
|
|
def make_downloader(self, sd_validator, options, payment_rate_manager):
|
|
data_rate = options[0]
|
|
upload_allowed = options[1]
|
|
|
|
d = save_sd_info(self.lbry_file_manager.stream_info_manager, sd_validator.raw_info)
|
|
d.addCallback(lambda stream_hash: self.lbry_file_manager.add_lbry_file(stream_hash,
|
|
payment_rate_manager,
|
|
data_rate,
|
|
upload_allowed))
|
|
return d
|
|
|
|
def get_description(self):
|
|
return "Save the file to disk" |