forked from LBRYCommunity/lbry-sdk
196 lines
8.1 KiB
Python
196 lines
8.1 KiB
Python
import json
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import logging
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from twisted.internet import defer
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from twisted.internet.task import LoopingCall
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from lbrynet.core.Error import InvalidStreamInfoError, InsufficientFundsError
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from lbrynet.core.PaymentRateManager import PaymentRateManager
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from lbrynet.core.StreamDescriptor import download_sd_blob
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log = logging.getLogger(__name__)
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class AutoAddStreamFromLBRYcrdName(object):
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def __init__(self, console, sd_identifier, session, wallet, lbry_file_manager):
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self.finished_deferred = defer.Deferred(None)
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self.console = console
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self.wallet = wallet
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self.resolved_name = None
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self.description = None
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self.key_fee = None
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self.key_fee_address = None
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self.name = None
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self.session = session
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self.payment_rate_manager = PaymentRateManager(self.session.base_payment_rate_manager)
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self.loading_metadata_deferred = defer.Deferred()
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self.lbry_file_manager = lbry_file_manager
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self.sd_identifier = sd_identifier
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self.metadata = None
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self.loading_failed = False
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self.resolved_name = None
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self.description = None
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self.key_fee = None
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self.key_fee_address = None
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self.stream_hash = None
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def start(self, stream_info):
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self.stream_info = stream_info
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if 'stream_hash' not in json.loads(self.stream_info['value']):
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print 'InvalidStreamInfoError'
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raise InvalidStreamInfoError(self.stream_info)
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self.resolved_name = self.stream_info.get('name', None)
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self.description = json.loads(self.stream_info['value']).get('description', None)
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try:
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if 'key_fee' in json.loads(self.stream_info['value']):
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self.key_fee = float(json.loads(self.stream_info['value'])['key_fee'])
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except ValueError:
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self.key_fee = None
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self.key_fee_address = json.loads(self.stream_info['value']).get('key_fee_address', None)
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self.stream_hash = json.loads(self.stream_info['value'])['stream_hash']
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self.loading_metadata_deferred = defer.Deferred(None)
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self.loading_metadata_deferred.addCallback(lambda _: download_sd_blob(self.session,
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self.stream_hash, self.payment_rate_manager))
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self.loading_metadata_deferred.addCallback(self.sd_identifier.get_metadata_for_sd_blob)
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self.loading_metadata_deferred.addCallback(self._handle_metadata)
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self.loading_metadata_deferred.addErrback(self._handle_load_canceled)
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self.loading_metadata_deferred.addErrback(self._handle_load_failed)
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self.finished_deferred.addCallback(lambda _: self.loading_metadata_deferred.callback(None))
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return self.finished_deferred.callback(None)
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def _start_download(self):
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d = self._pay_key_fee()
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d.addCallback(lambda _: self._make_downloader())
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d.addCallback(lambda stream_downloader: stream_downloader.start())
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d.addErrback(self._handle_download_error)
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return d
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def _pay_key_fee(self):
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if self.key_fee is not None and self.key_fee_address is not None:
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reserved_points = self.wallet.reserve_points(self.key_fee_address, self.key_fee)
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if reserved_points is None:
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return defer.fail(InsufficientFundsError())
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return self.wallet.send_points_to_address(reserved_points, self.key_fee)
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self.console.sendLine("Sent key fee" + str(self.key_fee_address) + " | " + str(self.key_fee))
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return defer.succeed(None)
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def _handle_load_canceled(self, err):
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err.trap(defer.CancelledError)
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self.finished_deferred.callback(None)
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def _handle_load_failed(self, err):
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self.loading_failed = True
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self.console.sendLine("handle load failed: " + str(err.getTraceback()))
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log.error("An exception occurred attempting to load the stream descriptor: %s", err.getTraceback())
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self.finished_deferred.callback(None)
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def _handle_metadata(self, metadata):
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self.metadata = metadata
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self.factory = self.metadata.factories[0]
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self.finished_deferred.addCallback(lambda _: self._start_download())
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def _handle_download_error(self, err):
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if err.check(InsufficientFundsError):
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self.console.sendLine("Download stopped due to insufficient funds.")
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else:
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self.console.sendLine("Autoaddstream: An unexpected error has caused the download to stop: %s" % err.getTraceback())
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def _make_downloader(self):
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self.downloader = self.factory.make_downloader(self.metadata, [0.5, True], self.payment_rate_manager)
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return self.downloader
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class AutoFetcher(object):
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def __init__(self, session, lbry_file_manager, lbry_file_metadata_manager, wallet, sd_identifier):
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self.console = None
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self.sd_identifier = sd_identifier
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self.wallet = wallet
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self.session = session
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self.lbry_file_manager = lbry_file_manager
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self.lbry_metadata_manager = lbry_file_metadata_manager
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self.seen = []
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self.lastbestblock = None
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self.rpc_conn = self.wallet.get_rpc_conn_x()
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self.search = None
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self.first_run = True
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self.is_running = False
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def start(self, console):
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#TODO first search through the nametrie before monitoring live updates
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#TODO load previously downloaded streams
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self.console = console
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if not self.is_running:
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self.is_running = True
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self.search = LoopingCall(self._looped_search)
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self.search.start(1)
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else:
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self.console.sendLine("Autofetcher is already running")
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def stop(self, console):
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self.console = console
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if self.is_running:
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self.search.stop()
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self.is_running = False
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else:
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self.console.sendLine("Autofetcher isn't running, there's nothing to stop")
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def check_if_running(self, console):
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self.console = console
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if self.is_running:
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self.console.sendLine("Autofetcher is running")
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self.console.sendLine("Last block hash: " + str(self.lastbestblock['bestblockhash']))
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else:
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self.console.sendLine("Autofetcher is not running")
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def _get_names(self):
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c = self.rpc_conn.getblockchaininfo()
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rtn = []
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if self.lastbestblock != c:
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block = self.rpc_conn.getblock(c['bestblockhash'])
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txids = block['tx']
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transactions = [self.rpc_conn.decoderawtransaction(self.rpc_conn.getrawtransaction(t)) for t in txids]
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for t in transactions:
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claims = self.rpc_conn.getclaimsfortx(t['txid'])
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# uncomment to make it download lbry://y on startup
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# if self.first_run:
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# claims = self.rpc_conn.getclaimsfortx("38da801a2c3620a79252e5b0b619d1d3f4d53aa9edd9cdc76d9ba65660fb9f06")
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# self.first_run = False
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if claims:
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for claim in claims:
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if claim not in self.seen:
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self.console.sendLine("lbry://" + str(claim['name']) + " | stream hash: " +
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str(json.loads(claim['value'])['stream_hash']))
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rtn.append(claim)
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self.seen.append(claim)
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else:
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#self.console.sendLine("No new claims in block #" + str(block['height']))
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pass
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self.lastbestblock = c
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if len(rtn):
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return defer.succeed(rtn)
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def _download_claims(self, claims):
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if claims:
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for claim in claims:
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download = defer.Deferred()
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stream = AutoAddStreamFromLBRYcrdName(self.console, self.sd_identifier, self.session,
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self.wallet, self.lbry_file_manager)
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download.addCallback(lambda _: stream.start(claim))
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download.callback(None)
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return defer.succeed(None)
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def _looped_search(self):
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d = defer.Deferred(None)
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d.addCallback(lambda _: self._get_names())
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d.addCallback(self._download_claims)
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d.callback(None) |