105 lines
3.4 KiB
Python
105 lines
3.4 KiB
Python
"""A simple script that attempts to directly download a single blob or stream from a given peer"""
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import argparse
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import logging
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import sys
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import tempfile
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import time
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import shutil
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from pprint import pprint
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from twisted.internet import asyncioreactor
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asyncioreactor.install()
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from twisted.internet import defer, threads, reactor
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from lbrynet import conf
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from lbrynet.core import log_support, Peer
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from lbrynet.core.SinglePeerDownloader import SinglePeerDownloader
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from lbrynet.core.StreamDescriptor import BlobStreamDescriptorReader
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from lbrynet.core.BlobManager import DiskBlobManager
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from lbrynet.daemon.Components import f2d
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from lbrynet.database.storage import SQLiteStorage
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from lbrynet.wallet.manager import LbryWalletManager
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log = logging.getLogger()
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def main(args=None):
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conf.initialize_settings()
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parser = argparse.ArgumentParser()
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parser.add_argument('peer')
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parser.add_argument('blob_hash')
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parser.add_argument('--timeout', type=int, default=30)
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args = parser.parse_args(args)
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log_support.configure_console(level='DEBUG')
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log_support.configure_twisted()
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if ":" in str(args.peer):
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host, port = str(args.peer).strip().split(":")
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else:
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host = args.peer
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port = 3333
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d = download_it(Peer.Peer(host, int(port)), args.timeout, args.blob_hash)
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d.addErrback(log.exception)
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d.addBoth(lambda _: reactor.callLater(0, reactor.stop))
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reactor.run()
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@defer.inlineCallbacks
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def download_it(peer, timeout, blob_hash):
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tmp_dir = yield threads.deferToThread(tempfile.mkdtemp)
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storage = SQLiteStorage(tmp_dir, reactor)
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yield storage.setup()
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tmp_blob_manager = DiskBlobManager(tmp_dir, storage)
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config = {'auto_connect': True}
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config['lbryum_wallet_dir'] = tempfile.mkdtemp()
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config['use_keyring'] = False
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config['blockchain_name'] = conf.settings['blockchain_name']
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config['lbryum_servers'] = []
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wallet = yield f2d(LbryWalletManager.from_lbrynet_config(config, storage))
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downloader = SinglePeerDownloader()
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downloader.setup(wallet)
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try:
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blob_downloaded = yield downloader.download_blob_from_peer(peer, timeout, blob_hash,
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tmp_blob_manager)
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if blob_downloaded:
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log.info("SUCCESS!")
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blob = yield tmp_blob_manager.get_blob(blob_hash)
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pprint(blob)
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if not blob.verified:
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log.error("except that its not verified....")
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else:
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reader = BlobStreamDescriptorReader(blob)
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info = None
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for x in range(0, 3):
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try:
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info = yield reader.get_info()
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except ValueError:
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pass
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if info:
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break
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# there's some kind of race condition where it sometimes doesnt write the blob to disk in time
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time.sleep(0.1)
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if info is not None:
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pprint(info)
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for content_blob in info['blobs']:
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if 'blob_hash' in content_blob:
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yield download_it(peer, timeout, content_blob['blob_hash'])
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else:
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log.error("Download failed")
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finally:
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yield tmp_blob_manager.stop()
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yield threads.deferToThread(shutil.rmtree, tmp_dir)
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defer.returnValue(True)
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if __name__ == '__main__':
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sys.exit(main())
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