153 lines
5.6 KiB
Python
153 lines
5.6 KiB
Python
import logging
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import mimetypes
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import os
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import random
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from twisted.internet import threads, defer, reactor
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from lbrynet.core import log_support
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from lbrynet.lbryfilemanager.EncryptedFileCreator import create_lbry_file
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from lbrynet.lbryfile.StreamDescriptor import publish_sd_blob
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from lbrynet.metadata.Metadata import Metadata
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from lbrynet.lbryfilemanager.EncryptedFileDownloader import ManagedEncryptedFileDownloader
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from lbrynet import reflector
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from lbrynet.conf import settings
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log = logging.getLogger(__name__)
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class Publisher(object):
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def __init__(self, session, lbry_file_manager, wallet):
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self.session = session
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self.lbry_file_manager = lbry_file_manager
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self.wallet = wallet
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self.received_file_name = False
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self.file_path = None
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self.file_name = None
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self.publish_name = None
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self.bid_amount = None
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self.verified = False
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self.lbry_file = None
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self.txid = None
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self.stream_hash = None
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# TODO: this needs to be passed into the constructor
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reflector_server = random.choice(settings.reflector_servers)
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self.reflector_server, self.reflector_port = reflector_server[0], reflector_server[1]
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self.metadata = {}
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def start(self, name, file_path, bid, metadata):
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log.info('Starting publish for %s', name)
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def _show_result():
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log.info(
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"Success! Published %s --> lbry://%s txid: %s",
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self.file_name, self.publish_name, self.txid)
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return defer.succeed(self.txid)
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self.publish_name = name
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self.file_path = file_path
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self.bid_amount = bid
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self.metadata = metadata
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# TODO: we cannot have this sort of code scattered throughout
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# our code base. Use polymorphism instead
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if os.name == "nt":
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file_mode = 'rb'
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else:
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file_mode = 'r'
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d = self._check_file_path(self.file_path)
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# TODO: ensure that we aren't leaving this resource open
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d.addCallback(lambda _: create_lbry_file(self.session, self.lbry_file_manager,
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self.file_name, open(self.file_path, file_mode)))
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d.addCallback(self.add_to_lbry_files)
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d.addCallback(lambda _: self._create_sd_blob())
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d.addCallback(lambda _: self._claim_name())
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d.addCallback(lambda _: self.set_status())
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d.addCallback(lambda _: self.start_reflector())
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d.addCallbacks(lambda _: _show_result(), self._show_publish_error)
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return d
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def start_reflector(self):
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# TODO: is self.reflector_server unused?
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reflector_server = random.choice(settings.reflector_servers)
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reflector_address, reflector_port = reflector_server[0], reflector_server[1]
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log.info("Reflecting new publication")
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factory = reflector.ClientFactory(
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self.session.blob_manager,
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self.lbry_file_manager.stream_info_manager,
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self.stream_hash
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)
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d = reactor.resolve(reflector_address)
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d.addCallback(lambda ip: reactor.connectTCP(ip, reflector_port, factory))
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d.addCallback(lambda _: factory.finished_deferred)
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return d
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def _check_file_path(self, file_path):
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def check_file_threaded():
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f = open(file_path)
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f.close()
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self.file_name = os.path.basename(self.file_path)
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return True
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return threads.deferToThread(check_file_threaded)
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def set_lbry_file(self, lbry_file_downloader):
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self.lbry_file = lbry_file_downloader
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return defer.succeed(None)
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def add_to_lbry_files(self, stream_hash):
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self.stream_hash = stream_hash
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prm = self.session.payment_rate_manager
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d = self.lbry_file_manager.add_lbry_file(stream_hash, prm)
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d.addCallback(self.set_lbry_file)
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return d
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def _create_sd_blob(self):
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log.debug('Creating stream descriptor blob')
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d = publish_sd_blob(self.lbry_file_manager.stream_info_manager,
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self.session.blob_manager,
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self.lbry_file.stream_hash)
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def set_sd_hash(sd_hash):
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log.debug('stream descriptor hash: %s', sd_hash)
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if 'sources' not in self.metadata:
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self.metadata['sources'] = {}
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self.metadata['sources']['lbry_sd_hash'] = sd_hash
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d.addCallback(set_sd_hash)
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return d
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def set_status(self):
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log.debug('Setting status')
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d = self.lbry_file_manager.change_lbry_file_status(self.lbry_file, ManagedEncryptedFileDownloader.STATUS_FINISHED)
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d.addCallback(lambda _: self.lbry_file.restore())
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return d
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def _claim_name(self):
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log.debug('Claiming name')
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self._update_metadata()
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m = Metadata(self.metadata)
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def set_tx_hash(txid):
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log.debug('Name claimed using txid: %s', txid)
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self.txid = txid
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d = self.wallet.claim_name(self.publish_name, self.bid_amount, m)
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d.addCallback(set_tx_hash)
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return d
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def _update_metadata(self):
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filename = os.path.join(self.lbry_file.download_directory, self.lbry_file.file_name)
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self.metadata['content_type'] = get_content_type(filename)
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self.metadata['ver'] = Metadata.current_version
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def _show_publish_error(self, err):
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log_support.failure(
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err, log, "An error occurred publishing %s to %s. Error: %s.",
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self.file_name, self.publish_name)
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return defer.fail(Exception("Publish failed"))
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def get_content_type(filename):
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return mimetypes.guess_type(filename)[0] or 'application/octet-stream'
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