async lbrynet.blob_exchange
This commit is contained in:
Jack Robison
Lex Berezhny
parent
2fa5233796
commit
69b259c285
24 changed files with 770 additions and 2263 deletions
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@ -1,22 +0,0 @@
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import binascii
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from twisted.internet import defer
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from lbrynet.blob.CryptBlob import StreamBlobDecryptor
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class CryptBlobHandler:
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#implements(IBlobHandler)
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def __init__(self, key, write_func):
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self.key = key
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self.write_func = write_func
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######## IBlobHandler #########
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def handle_blob(self, blob, blob_info):
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try:
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blob_decryptor = StreamBlobDecryptor(blob, self.key, binascii.unhexlify(blob_info.iv),
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blob_info.length)
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except ValueError as err:
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return defer.fail(err)
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d = blob_decryptor.decrypt(self.write_func)
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return d
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168
lbrynet/blob_exchange/client.py
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168
lbrynet/blob_exchange/client.py
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@ -0,0 +1,168 @@
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import asyncio
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import logging
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import typing
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from lbrynet.blob_exchange.serialization import BlobResponse, BlobRequest
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if typing.TYPE_CHECKING:
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from lbrynet.blob.blob_file import BlobFile
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from lbrynet.blob.writer import HashBlobWriter
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log = logging.getLogger(__name__)
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class BlobExchangeClientProtocol(asyncio.Protocol):
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def __init__(self, loop: asyncio.BaseEventLoop, peer_timeout: typing.Optional[float] = 10):
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self.loop = loop
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self.peer_port: typing.Optional[int] = None
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self.peer_address: typing.Optional[str] = None
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self.peer_timeout = peer_timeout
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self.transport: asyncio.Transport = None
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self.writer: 'HashBlobWriter' = None
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self.blob: 'BlobFile' = None
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self.download_running = asyncio.Event(loop=self.loop)
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self._blob_bytes_received = 0
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self._response_fut: asyncio.Future = None
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self._request_lock = asyncio.Lock(loop=self.loop)
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def handle_data_received(self, data: bytes):
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if self.transport.is_closing():
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if self._response_fut and not (self._response_fut.done() or self._response_fut.cancelled()):
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self._response_fut.cancel()
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return
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response = BlobResponse.deserialize(data)
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if response.responses and self.blob:
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blob_response = response.get_blob_response()
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if blob_response and not blob_response.error and blob_response.blob_hash == self.blob.blob_hash:
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self.blob.set_length(blob_response.length)
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elif blob_response and not blob_response.error and self.blob.blob_hash != blob_response.blob_hash:
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log.warning("mismatch with self.blob %s", self.blob.blob_hash)
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return
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if response.responses:
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self._response_fut.set_result(response)
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if response.blob_data and self.writer and not self.writer.closed():
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self._blob_bytes_received += len(response.blob_data)
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try:
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self.writer.write(response.blob_data)
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except IOError as err:
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log.error("error downloading blob: %s", err)
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def data_received(self, data):
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try:
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return self.handle_data_received(data)
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except (asyncio.CancelledError, asyncio.TimeoutError) as err:
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if self._response_fut and not self._response_fut.done():
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self._response_fut.set_exception(err)
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async def _download_blob(self) -> typing.Tuple[bool, bool]:
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request = BlobRequest.make_request_for_blob_hash(self.blob.blob_hash)
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try:
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self.transport.write(request.serialize())
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response: BlobResponse = await asyncio.wait_for(self._response_fut, self.peer_timeout, loop=self.loop)
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availability_response = response.get_availability_response()
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price_response = response.get_price_response()
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blob_response = response.get_blob_response()
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if (not blob_response or blob_response.error) and\
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(not availability_response or not availability_response.available_blobs):
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log.warning("blob not in availability response")
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return False, True
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elif availability_response.available_blobs and \
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availability_response.available_blobs != [self.blob.blob_hash]:
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log.warning("blob availability response doesn't match our request")
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return False, False
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if not price_response or price_response.blob_data_payment_rate != 'RATE_ACCEPTED':
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log.warning("data rate rejected")
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return False, False
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if not blob_response or blob_response.error:
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log.warning("blob cant be downloaded from this peer")
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return False, True
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if not blob_response.error and blob_response.blob_hash != self.blob.blob_hash:
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log.warning("incoming blob hash mismatch")
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return False, False
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if self.blob.length is not None and self.blob.length != blob_response.length:
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log.warning("incoming blob unexpected length")
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return False, False
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msg = f"downloading {self.blob.blob_hash[:8]} from {self.peer_address}:{self.peer_port}," \
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f" timeout in {self.peer_timeout}"
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log.info(msg)
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await asyncio.wait_for(self.writer.finished, self.peer_timeout, loop=self.loop)
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await self.blob.finished_writing.wait()
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msg = f"downloaded {self.blob.blob_hash[:8]} from {self.peer_address}"
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log.info(msg)
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return True, True
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except asyncio.CancelledError:
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return False, True
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except asyncio.TimeoutError:
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return False, False
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finally:
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await self.close()
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async def close(self):
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if self._response_fut and not self._response_fut.done():
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self._response_fut.cancel()
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if self.writer and not self.writer.closed():
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self.writer.close_handle()
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if self.blob:
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await self.blob.close()
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self.download_running.clear()
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self._response_fut = None
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self.writer = None
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self.blob = None
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if self.transport:
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self.transport.close()
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self.transport = None
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async def download_blob(self, blob: 'BlobFile') -> typing.Tuple[bool, bool]:
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if blob.get_is_verified():
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return False, True
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async with self._request_lock:
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try:
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if self.download_running.is_set():
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log.info("wait for download already running")
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await self.download_running.wait()
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self.blob, self.writer, self._blob_bytes_received = blob, blob.open_for_writing(), 0
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self.download_running.set()
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self._response_fut = asyncio.Future(loop=self.loop)
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return await self._download_blob()
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except OSError:
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log.error("race happened")
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# i'm not sure how to fix this race condition - jack
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return False, True
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except asyncio.TimeoutError:
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if self._response_fut and not self._response_fut.done():
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self._response_fut.cancel()
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return False, False
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except asyncio.CancelledError:
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if self._response_fut and not self._response_fut.done():
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self._response_fut.cancel()
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return False, True
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def connection_made(self, transport: asyncio.Transport):
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self.transport = transport
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self.peer_address, self.peer_port = self.transport.get_extra_info('peername')
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# log.info("connection made to %s: %s", self.peer_address, transport)
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def connection_lost(self, reason):
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# log.info("connection lost to %s (reason: %s)", self.peer_address, reason)
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self.transport = None
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self.loop.create_task(self.close())
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async def request_blob(loop: asyncio.BaseEventLoop, blob: 'BlobFile', protocol: 'BlobExchangeClientProtocol',
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address: str, tcp_port: int, peer_connect_timeout: float) -> typing.Tuple[bool, bool]:
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"""
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Returns [<downloaded blob>, <keep connection>]
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"""
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if blob.get_is_verified():
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return False, True
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if blob.get_is_verified():
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log.info("already verified")
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return False, True
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try:
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await asyncio.wait_for(loop.create_connection(lambda: protocol, address, tcp_port),
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peer_connect_timeout, loop=loop)
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return await protocol.download_blob(blob)
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except (asyncio.TimeoutError, asyncio.CancelledError, ConnectionRefusedError, ConnectionAbortedError, OSError):
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return False, False
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132
lbrynet/blob_exchange/downloader.py
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132
lbrynet/blob_exchange/downloader.py
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import asyncio
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import typing
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import logging
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from lbrynet import conf
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from lbrynet.utils import drain_tasks
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from lbrynet.blob_exchange.client import BlobExchangeClientProtocol, request_blob
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if typing.TYPE_CHECKING:
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from lbrynet.dht.node import Node
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from lbrynet.dht.peer import KademliaPeer
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from lbrynet.blob.blob_manager import BlobFileManager
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from lbrynet.blob.blob_file import BlobFile
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log = logging.getLogger(__name__)
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def drain_into(a: list, b: list):
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while a:
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b.append(a.pop())
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class BlobDownloader: # TODO: refactor to be the base class used by StreamDownloader
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"""A single blob downloader"""
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def __init__(self, loop: asyncio.BaseEventLoop, blob_manager: 'BlobFileManager', config: conf.Config):
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self.loop = loop
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self.blob_manager = blob_manager
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self.new_peer_event = asyncio.Event(loop=self.loop)
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self.active_connections: typing.Dict['KademliaPeer', BlobExchangeClientProtocol] = {}
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self.running_download_requests: typing.List[asyncio.Task] = []
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self.requested_from: typing.Dict[str, typing.Dict['KademliaPeer', asyncio.Task]] = {}
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self.lock = asyncio.Lock(loop=self.loop)
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self.blob: 'BlobFile' = None
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self.blob_queue = asyncio.Queue(loop=self.loop)
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self.blob_download_timeout = config.get('blob_download_timeout')
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self.peer_connect_timeout = config.get('peer_connect_timeout')
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self.max_connections = config.get('max_connections_per_stream')
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async def _request_blob(self, peer: 'KademliaPeer'):
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if self.blob.get_is_verified():
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log.info("already verified")
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return
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if peer not in self.active_connections:
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log.warning("not active, adding: %s", str(peer))
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self.active_connections[peer] = BlobExchangeClientProtocol(self.loop, self.blob_download_timeout)
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protocol = self.active_connections[peer]
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success, keep_connection = await request_blob(self.loop, self.blob, protocol, peer.address, peer.tcp_port,
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self.peer_connect_timeout)
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await protocol.close()
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if not keep_connection:
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log.info("drop peer %s:%i", peer.address, peer.tcp_port)
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if peer in self.active_connections:
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async with self.lock:
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del self.active_connections[peer]
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return
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log.info("keep peer %s:%i", peer.address, peer.tcp_port)
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def _update_requests(self):
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self.new_peer_event.clear()
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if self.blob.blob_hash not in self.requested_from:
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self.requested_from[self.blob.blob_hash] = {}
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to_add = []
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for peer in self.active_connections.keys():
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if peer not in self.requested_from[self.blob.blob_hash] and peer not in to_add:
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to_add.append(peer)
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if to_add or self.running_download_requests:
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log.info("adding download probes for %i peers to %i already active",
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min(len(to_add), 8 - len(self.running_download_requests)),
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len(self.running_download_requests))
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else:
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log.info("downloader idle...")
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for peer in to_add:
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if len(self.running_download_requests) >= 8:
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break
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task = self.loop.create_task(self._request_blob(peer))
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self.requested_from[self.blob.blob_hash][peer] = task
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self.running_download_requests.append(task)
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def _add_peer_protocols(self, peers: typing.List['KademliaPeer']):
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added = 0
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for peer in peers:
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if peer not in self.active_connections:
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self.active_connections[peer] = BlobExchangeClientProtocol(self.loop, self.blob_download_timeout)
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added += 1
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if added:
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if not self.new_peer_event.is_set():
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log.info("added %i new peers", len(peers))
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self.new_peer_event.set()
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async def _accumulate_connections(self, node: 'Node'):
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try:
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async with node.stream_peer_search_junction(self.blob_queue) as search_junction:
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async for peers in search_junction:
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if not isinstance(peers, list): # TODO: what's up with this?
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log.error("not a list: %s %s", peers, str(type(peers)))
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else:
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self._add_peer_protocols(peers)
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return
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except asyncio.CancelledError:
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pass
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async def get_blob(self, blob_hash: str, node: 'Node') -> 'BlobFile':
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self.blob = self.blob_manager.get_blob(blob_hash)
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if self.blob.get_is_verified():
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return self.blob
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accumulator = self.loop.create_task(self._accumulate_connections(node))
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self.blob_queue.put_nowait(blob_hash)
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try:
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while not self.blob.get_is_verified():
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if len(self.running_download_requests) < self.max_connections:
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self._update_requests()
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# drain the tasks into a temporary list
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download_tasks = []
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drain_into(self.running_download_requests, download_tasks)
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got_new_peer = self.loop.create_task(self.new_peer_event.wait())
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# wait for a new peer to be added or for a download attempt to finish
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await asyncio.wait([got_new_peer] + download_tasks, return_when='FIRST_COMPLETED',
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loop=self.loop)
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if got_new_peer and not got_new_peer.done():
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got_new_peer.cancel()
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if self.blob.get_is_verified():
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if got_new_peer and not got_new_peer.done():
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got_new_peer.cancel()
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drain_tasks(download_tasks)
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return self.blob
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except asyncio.CancelledError:
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drain_tasks(self.running_download_requests)
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raise
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finally:
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if accumulator and not accumulator.done():
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accumulator.cancel()
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289
lbrynet/blob_exchange/serialization.py
Normal file
289
lbrynet/blob_exchange/serialization.py
Normal file
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@ -0,0 +1,289 @@
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import typing
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import json
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import logging
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log = logging.getLogger(__name__)
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class BlobMessage:
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key = ''
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def to_dict(self) -> typing.Dict:
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raise NotImplementedError()
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class BlobPriceRequest(BlobMessage):
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key = 'blob_data_payment_rate'
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def __init__(self, blob_data_payment_rate: float, **kwargs) -> None:
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self.blob_data_payment_rate = blob_data_payment_rate
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def to_dict(self) -> typing.Dict:
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return {
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self.key: self.blob_data_payment_rate
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}
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class BlobPriceResponse(BlobMessage):
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key = 'blob_data_payment_rate'
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rate_accepted = 'RATE_ACCEPTED'
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rate_too_low = 'RATE_TOO_LOW'
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rate_unset = 'RATE_UNSET'
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def __init__(self, blob_data_payment_rate: str, **kwargs) -> None:
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if blob_data_payment_rate not in (self.rate_accepted, self.rate_too_low, self.rate_unset):
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raise ValueError(blob_data_payment_rate)
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self.blob_data_payment_rate = blob_data_payment_rate
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def to_dict(self) -> typing.Dict:
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return {
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self.key: self.blob_data_payment_rate
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}
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class BlobAvailabilityRequest(BlobMessage):
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key = 'requested_blobs'
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def __init__(self, requested_blobs: typing.List[str], lbrycrd_address: typing.Optional[bool] = True,
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**kwargs) -> None:
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assert len(requested_blobs)
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self.requested_blobs = requested_blobs
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self.lbrycrd_address = lbrycrd_address
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def to_dict(self) -> typing.Dict:
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return {
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self.key: self.requested_blobs,
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'lbrycrd_address': self.lbrycrd_address
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}
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class BlobAvailabilityResponse(BlobMessage):
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key = 'available_blobs'
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def __init__(self, available_blobs: typing.List[str], lbrycrd_address: typing.Optional[str] = True,
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**kwargs) -> None:
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self.available_blobs = available_blobs
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self.lbrycrd_address = lbrycrd_address
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def to_dict(self) -> typing.Dict:
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d = {
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self.key: self.available_blobs
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}
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if self.lbrycrd_address:
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d['lbrycrd_address'] = self.lbrycrd_address
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return d
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class BlobDownloadRequest(BlobMessage):
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key = 'requested_blob'
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def __init__(self, requested_blob: str, **kwargs) -> None:
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self.requested_blob = requested_blob
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def to_dict(self) -> typing.Dict:
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return {
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self.key: self.requested_blob
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}
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class BlobDownloadResponse(BlobMessage):
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key = 'incoming_blob'
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def __init__(self, **response: typing.Dict) -> None:
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incoming_blob = response[self.key]
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self.error = None
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self.incoming_blob = None
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if 'error' in incoming_blob:
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self.error = incoming_blob['error']
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else:
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self.incoming_blob = {'blob_hash': incoming_blob['blob_hash'], 'length': incoming_blob['length']}
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self.length = None if not self.incoming_blob else self.incoming_blob['length']
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self.blob_hash = None if not self.incoming_blob else self.incoming_blob['blob_hash']
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def to_dict(self) -> typing.Dict:
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return {
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self.key if not self.error else 'error': self.incoming_blob or self.error,
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||||
}
|
||||
|
||||
|
||||
class BlobPaymentAddressRequest(BlobMessage):
|
||||
key = 'lbrycrd_address'
|
||||
|
||||
def __init__(self, lbrycrd_address: str, **kwargs) -> None:
|
||||
self.lbrycrd_address = lbrycrd_address
|
||||
|
||||
def to_dict(self) -> typing.Dict:
|
||||
return {
|
||||
self.key: self.lbrycrd_address
|
||||
}
|
||||
|
||||
|
||||
class BlobPaymentAddressResponse(BlobPaymentAddressRequest):
|
||||
pass
|
||||
|
||||
|
||||
class BlobErrorResponse(BlobMessage):
|
||||
key = 'error'
|
||||
|
||||
def __init__(self, error: str, **kwargs) -> None:
|
||||
self.error = error
|
||||
|
||||
def to_dict(self) -> typing.Dict:
|
||||
return {
|
||||
self.key: self.error
|
||||
}
|
||||
|
||||
|
||||
blob_request_types = typing.Union[BlobPriceRequest, BlobAvailabilityRequest, BlobDownloadRequest,
|
||||
BlobPaymentAddressRequest]
|
||||
blob_response_types = typing.Union[BlobPriceResponse, BlobAvailabilityResponse, BlobDownloadResponse,
|
||||
BlobErrorResponse, BlobPaymentAddressResponse]
|
||||
|
||||
|
||||
def _parse_blob_response(response_msg: bytes) -> typing.Tuple[typing.Optional[typing.Dict], bytes]:
|
||||
# scenarios:
|
||||
# <json>
|
||||
# <blob bytes>
|
||||
# <json><blob bytes>
|
||||
|
||||
extra_data = b''
|
||||
response = None
|
||||
curr_pos = 0
|
||||
while True:
|
||||
next_close_paren = response_msg.find(b'}', curr_pos)
|
||||
if next_close_paren == -1:
|
||||
break
|
||||
curr_pos = next_close_paren + 1
|
||||
try:
|
||||
response = json.loads(response_msg[:curr_pos])
|
||||
if not isinstance(response, dict):
|
||||
raise ValueError()
|
||||
for key in response.keys():
|
||||
if key not in [
|
||||
BlobPaymentAddressResponse.key,
|
||||
BlobAvailabilityResponse.key,
|
||||
BlobPriceResponse.key,
|
||||
BlobDownloadResponse.key]:
|
||||
raise ValueError()
|
||||
extra_data = response_msg[curr_pos:]
|
||||
break
|
||||
except ValueError:
|
||||
response = None
|
||||
if response is None:
|
||||
extra_data = response_msg
|
||||
return response, extra_data
|
||||
|
||||
|
||||
class BlobRequest:
|
||||
def __init__(self, requests: typing.List[blob_request_types]) -> None:
|
||||
self.requests = requests
|
||||
|
||||
def to_dict(self):
|
||||
d = {}
|
||||
for request in self.requests:
|
||||
d.update(request.to_dict())
|
||||
return d
|
||||
|
||||
def _get_request(self, request_type: blob_request_types):
|
||||
request = tuple(filter(lambda r: type(r) == request_type, self.requests))
|
||||
if request:
|
||||
return request[0]
|
||||
|
||||
def get_availability_request(self) -> typing.Optional[BlobAvailabilityRequest]:
|
||||
response = self._get_request(BlobAvailabilityRequest)
|
||||
if response:
|
||||
return response
|
||||
|
||||
def get_price_request(self) -> typing.Optional[BlobPriceRequest]:
|
||||
response = self._get_request(BlobPriceRequest)
|
||||
if response:
|
||||
return response
|
||||
|
||||
def get_blob_request(self) -> typing.Optional[BlobDownloadRequest]:
|
||||
response = self._get_request(BlobDownloadRequest)
|
||||
if response:
|
||||
return response
|
||||
|
||||
def get_address_request(self) -> typing.Optional[BlobPaymentAddressRequest]:
|
||||
response = self._get_request(BlobPaymentAddressRequest)
|
||||
if response:
|
||||
return response
|
||||
|
||||
def serialize(self) -> bytes:
|
||||
return json.dumps(self.to_dict()).encode()
|
||||
|
||||
@classmethod
|
||||
def deserialize(cls, data: bytes) -> 'BlobRequest':
|
||||
request = json.loads(data)
|
||||
return cls([
|
||||
request_type(**request)
|
||||
for request_type in (BlobPriceRequest, BlobAvailabilityRequest, BlobDownloadRequest,
|
||||
BlobPaymentAddressRequest)
|
||||
if request_type.key in request
|
||||
])
|
||||
|
||||
@classmethod
|
||||
def make_request_for_blob_hash(cls, blob_hash: str) -> 'BlobRequest':
|
||||
return cls(
|
||||
[BlobAvailabilityRequest([blob_hash]), BlobPriceRequest(0.0), BlobDownloadRequest(blob_hash)]
|
||||
)
|
||||
|
||||
|
||||
class BlobResponse:
|
||||
def __init__(self, responses: typing.List[blob_response_types], blob_data: typing.Optional[bytes] = None) -> None:
|
||||
self.responses = responses
|
||||
self.blob_data = blob_data
|
||||
|
||||
def to_dict(self):
|
||||
d = {}
|
||||
for response in self.responses:
|
||||
d.update(response.to_dict())
|
||||
return d
|
||||
|
||||
def _get_response(self, response_type: blob_response_types):
|
||||
response = tuple(filter(lambda r: type(r) == response_type, self.responses))
|
||||
if response:
|
||||
return response[0]
|
||||
|
||||
def get_error_response(self) -> typing.Optional[BlobErrorResponse]:
|
||||
error = self._get_response(BlobErrorResponse)
|
||||
if error:
|
||||
log.error(error)
|
||||
return error
|
||||
|
||||
def get_availability_response(self) -> typing.Optional[BlobAvailabilityResponse]:
|
||||
response = self._get_response(BlobAvailabilityResponse)
|
||||
if response:
|
||||
return response
|
||||
|
||||
def get_price_response(self) -> typing.Optional[BlobPriceResponse]:
|
||||
response = self._get_response(BlobPriceResponse)
|
||||
if response:
|
||||
return response
|
||||
|
||||
def get_blob_response(self) -> typing.Optional[BlobDownloadResponse]:
|
||||
response = self._get_response(BlobDownloadResponse)
|
||||
if response:
|
||||
return response
|
||||
|
||||
def get_address_response(self) -> typing.Optional[BlobPaymentAddressResponse]:
|
||||
response = self._get_response(BlobPaymentAddressResponse)
|
||||
if response:
|
||||
return response
|
||||
|
||||
def serialize(self) -> bytes:
|
||||
return json.dumps(self.to_dict()).encode()
|
||||
|
||||
@classmethod
|
||||
def deserialize(cls, data: bytes) -> 'BlobResponse':
|
||||
response, extra = _parse_blob_response(data)
|
||||
requests = []
|
||||
if response:
|
||||
requests.extend([
|
||||
response_type(**response)
|
||||
for response_type in (BlobPriceResponse, BlobAvailabilityResponse, BlobDownloadResponse,
|
||||
BlobErrorResponse, BlobPaymentAddressResponse)
|
||||
if response_type.key in response
|
||||
])
|
||||
return cls(requests, extra)
|
||||
|
||||
107
lbrynet/blob_exchange/server.py
Normal file
107
lbrynet/blob_exchange/server.py
Normal file
|
|
@ -0,0 +1,107 @@
|
|||
import asyncio
|
||||
import binascii
|
||||
import logging
|
||||
import typing
|
||||
from json.decoder import JSONDecodeError
|
||||
from lbrynet.blob_exchange.serialization import BlobResponse, BlobRequest, blob_response_types
|
||||
from lbrynet.blob_exchange.serialization import BlobAvailabilityResponse, BlobPriceResponse, BlobDownloadResponse, \
|
||||
BlobPaymentAddressResponse
|
||||
|
||||
if typing.TYPE_CHECKING:
|
||||
from lbrynet.blob.blob_manager import BlobFileManager
|
||||
|
||||
log = logging.getLogger(__name__)
|
||||
|
||||
|
||||
class BlobServer(asyncio.Protocol):
|
||||
def __init__(self, loop: asyncio.BaseEventLoop, blob_manager: 'BlobFileManager', lbrycrd_address: str):
|
||||
self.loop = loop
|
||||
self.blob_manager = blob_manager
|
||||
self.server_task: asyncio.Task = None
|
||||
self.started_listening = asyncio.Event(loop=self.loop)
|
||||
self.buf = b''
|
||||
self.transport = None
|
||||
self.lbrycrd_address = lbrycrd_address
|
||||
|
||||
def connection_made(self, transport):
|
||||
self.transport = transport
|
||||
|
||||
def send_response(self, responses: typing.List[blob_response_types]):
|
||||
to_send = []
|
||||
while responses:
|
||||
to_send.append(responses.pop())
|
||||
self.transport.write(BlobResponse(to_send).serialize())
|
||||
|
||||
async def handle_request(self, request: BlobRequest):
|
||||
addr = self.transport.get_extra_info('peername')
|
||||
peer_address, peer_port = addr
|
||||
|
||||
responses = []
|
||||
address_request = request.get_address_request()
|
||||
if address_request:
|
||||
responses.append(BlobPaymentAddressResponse(lbrycrd_address=self.lbrycrd_address))
|
||||
availability_request = request.get_availability_request()
|
||||
if availability_request:
|
||||
responses.append(BlobAvailabilityResponse(available_blobs=list(set((
|
||||
filter(lambda blob_hash: blob_hash in self.blob_manager.completed_blob_hashes,
|
||||
availability_request.requested_blobs)
|
||||
)))))
|
||||
price_request = request.get_price_request()
|
||||
if price_request:
|
||||
responses.append(BlobPriceResponse(blob_data_payment_rate='RATE_ACCEPTED'))
|
||||
download_request = request.get_blob_request()
|
||||
|
||||
if download_request:
|
||||
blob = self.blob_manager.get_blob(download_request.requested_blob)
|
||||
if blob.get_is_verified():
|
||||
incoming_blob = {'blob_hash': blob.blob_hash, 'length': blob.length}
|
||||
responses.append(BlobDownloadResponse(incoming_blob=incoming_blob))
|
||||
self.send_response(responses)
|
||||
log.info("send %s to %s:%i", blob.blob_hash[:8], peer_address, peer_port)
|
||||
sent = await blob.sendfile(self)
|
||||
log.info("sent %s (%i bytes) to %s:%i", blob.blob_hash[:8], sent, peer_address, peer_port)
|
||||
if responses:
|
||||
self.send_response(responses)
|
||||
# self.transport.close()
|
||||
|
||||
def data_received(self, data):
|
||||
request = None
|
||||
if data:
|
||||
message, separator, remainder = data.rpartition(b'}')
|
||||
if not separator:
|
||||
self.buf += data
|
||||
return
|
||||
try:
|
||||
request = BlobRequest.deserialize(data)
|
||||
self.buf = remainder
|
||||
except JSONDecodeError:
|
||||
addr = self.transport.get_extra_info('peername')
|
||||
peer_address, peer_port = addr
|
||||
log.error("failed to decode blob request from %s:%i (%i bytes): %s", peer_address, peer_port,
|
||||
len(data), '' if not data else binascii.hexlify(data).decode())
|
||||
if not request:
|
||||
addr = self.transport.get_extra_info('peername')
|
||||
peer_address, peer_port = addr
|
||||
log.warning("failed to decode blob request from %s:%i", peer_address, peer_port)
|
||||
self.transport.close()
|
||||
return
|
||||
self.loop.create_task(self.handle_request(request))
|
||||
|
||||
def start_server(self, port: int, interface: typing.Optional[str] = '0.0.0.0'):
|
||||
if self.server_task is not None:
|
||||
raise Exception("already running")
|
||||
|
||||
async def _start_server():
|
||||
server = await self.loop.create_server(lambda: self, interface, port)
|
||||
self.started_listening.set()
|
||||
log.info("Blob server listening on TCP %s:%i", interface, port)
|
||||
async with server:
|
||||
await server.serve_forever()
|
||||
|
||||
self.server_task = self.loop.create_task(_start_server())
|
||||
|
||||
def stop_server(self):
|
||||
if self.server_task:
|
||||
self.server_task.cancel()
|
||||
self.server_task = None
|
||||
log.info("Stopped blob server")
|
||||
|
|
@ -6,15 +6,12 @@ from binascii import unhexlify
|
|||
from datetime import datetime
|
||||
from typing import Optional
|
||||
|
||||
from twisted.internet import defer
|
||||
|
||||
from lbrynet.schema.schema import SECP256k1
|
||||
from torba.client.basemanager import BaseWalletManager
|
||||
from torba.rpc.jsonrpc import CodeMessageError
|
||||
|
||||
from lbrynet.schema.claim import ClaimDict
|
||||
|
||||
from lbrynet.extras.compat import f2d
|
||||
from lbrynet.extras.wallet.ledger import MainNetLedger
|
||||
from lbrynet.extras.wallet.account import BaseAccount, generate_certificate
|
||||
from lbrynet.extras.wallet.transaction import Transaction
|
||||
|
|
@ -260,12 +257,6 @@ class LbryWalletManager(BaseWalletManager):
|
|||
destination_address: bytes = reserved.identifier.encode('latin1')
|
||||
return self.send_amount_to_address(amount, destination_address, account)
|
||||
|
||||
def get_wallet_info_query_handler_factory(self):
|
||||
return LBRYcrdAddressQueryHandlerFactory(self)
|
||||
|
||||
def get_info_exchanger(self):
|
||||
return LBRYcrdAddressRequester(self)
|
||||
|
||||
async def resolve(self, *uris, **kwargs):
|
||||
page = kwargs.get('page', 0)
|
||||
page_size = kwargs.get('page_size', 10)
|
||||
|
|
@ -516,10 +507,10 @@ class LbryWalletManager(BaseWalletManager):
|
|||
pass # TODO: Data payments is disabled
|
||||
|
||||
def send_points(self, reserved_points, amount):
|
||||
defer.succeed(True) # TODO: Data payments is disabled
|
||||
pass # TODO: Data payments is disabled
|
||||
|
||||
def cancel_point_reservation(self, reserved_points):
|
||||
pass # fixme: disabled for now.
|
||||
pass # fixme: disabled for now.
|
||||
|
||||
def save(self):
|
||||
for wallet in self.wallets:
|
||||
|
|
@ -537,83 +528,3 @@ class LbryWalletManager(BaseWalletManager):
|
|||
|
||||
def get_claim_by_outpoint(self, txid, nout):
|
||||
return self.ledger.get_claim_by_outpoint(txid, nout)
|
||||
|
||||
|
||||
class ClientRequest:
|
||||
def __init__(self, request_dict, response_identifier=None):
|
||||
self.request_dict = request_dict
|
||||
self.response_identifier = response_identifier
|
||||
|
||||
|
||||
class LBRYcrdAddressRequester:
|
||||
|
||||
def __init__(self, wallet):
|
||||
self.wallet = wallet
|
||||
self._protocols = []
|
||||
|
||||
def send_next_request(self, peer, protocol):
|
||||
if not protocol in self._protocols:
|
||||
r = ClientRequest({'lbrycrd_address': True}, 'lbrycrd_address')
|
||||
d = protocol.add_request(r)
|
||||
d.addCallback(self._handle_address_response, peer, r, protocol)
|
||||
d.addErrback(self._request_failed, peer)
|
||||
self._protocols.append(protocol)
|
||||
return defer.succeed(True)
|
||||
else:
|
||||
return defer.succeed(False)
|
||||
|
||||
def _handle_address_response(self, response_dict, peer, request, protocol):
|
||||
if request.response_identifier not in response_dict:
|
||||
raise ValueError(
|
||||
f"Expected {request.response_identifier} in response but did not get it")
|
||||
assert protocol in self._protocols, "Responding protocol is not in our list of protocols"
|
||||
address = response_dict[request.response_identifier]
|
||||
self.wallet.update_peer_address(peer, address)
|
||||
|
||||
def _request_failed(self, error, peer):
|
||||
raise Exception(
|
||||
"A peer failed to send a valid public key response. Error: {}, peer: {}".format(
|
||||
error.getErrorMessage(), str(peer)
|
||||
)
|
||||
)
|
||||
|
||||
|
||||
class LBRYcrdAddressQueryHandlerFactory:
|
||||
|
||||
def __init__(self, wallet):
|
||||
self.wallet = wallet
|
||||
|
||||
def build_query_handler(self):
|
||||
q_h = LBRYcrdAddressQueryHandler(self.wallet)
|
||||
return q_h
|
||||
|
||||
def get_primary_query_identifier(self):
|
||||
return 'lbrycrd_address'
|
||||
|
||||
def get_description(self):
|
||||
return "LBRYcrd Address - an address for receiving payments via LBRYcrd"
|
||||
|
||||
|
||||
class LBRYcrdAddressQueryHandler:
|
||||
|
||||
def __init__(self, wallet):
|
||||
self.wallet = wallet
|
||||
self.query_identifiers = ['lbrycrd_address']
|
||||
self.address = None
|
||||
self.peer = None
|
||||
|
||||
def register_with_request_handler(self, request_handler, peer):
|
||||
self.peer = peer
|
||||
request_handler.register_query_handler(self, self.query_identifiers)
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def handle_queries(self, queries):
|
||||
if self.query_identifiers[0] in queries:
|
||||
address = yield f2d(self.wallet.get_unused_address_for_peer(self.peer))
|
||||
self.address = address
|
||||
fields = {'lbrycrd_address': address}
|
||||
return fields
|
||||
if self.address is None:
|
||||
raise Exception("Expected a request for an address, but did not receive one")
|
||||
else:
|
||||
return {}
|
||||
|
|
|
|||
|
|
@ -1,95 +0,0 @@
|
|||
import logging
|
||||
import random
|
||||
import time
|
||||
from decimal import Decimal
|
||||
from twisted.internet import defer
|
||||
from twisted.internet.task import LoopingCall
|
||||
|
||||
log = logging.getLogger(__name__)
|
||||
|
||||
|
||||
class BlobAvailabilityTracker:
|
||||
"""
|
||||
Class to track peer counts for known blobs, and to discover new popular blobs
|
||||
|
||||
Attributes:
|
||||
availability (dict): dictionary of peers for known blobs
|
||||
"""
|
||||
|
||||
def __init__(self, blob_manager, peer_finder, dht_node):
|
||||
self.availability = {}
|
||||
self._last_mean_availability = Decimal(0.0)
|
||||
self._blob_manager = blob_manager
|
||||
self._peer_finder = peer_finder
|
||||
self._dht_node = dht_node
|
||||
self._check_mine = LoopingCall(self._update_mine)
|
||||
|
||||
def start(self):
|
||||
log.info("Starting blob availability tracker.")
|
||||
self._check_mine.start(600)
|
||||
|
||||
def stop(self):
|
||||
log.info("Stopping blob availability tracker.")
|
||||
if self._check_mine.running:
|
||||
self._check_mine.stop()
|
||||
|
||||
def get_blob_availability(self, blob, timeout=None):
|
||||
def _get_peer_count(peers):
|
||||
have_blob = sum(1 for peer in peers if peer.is_available())
|
||||
return {blob: have_blob}
|
||||
|
||||
d = self._peer_finder.find_peers_for_blob(blob, timeout)
|
||||
d.addCallback(_get_peer_count)
|
||||
return d
|
||||
|
||||
def get_availability_for_blobs(self, blobs, timeout=None):
|
||||
dl = [self.get_blob_availability(blob, timeout) for blob in blobs if blob]
|
||||
d = defer.DeferredList(dl)
|
||||
d.addCallback(lambda results: [val for success, val in results if success])
|
||||
return d
|
||||
|
||||
@property
|
||||
def last_mean_availability(self):
|
||||
return max(Decimal(0.01), self._last_mean_availability)
|
||||
|
||||
def _update_peers_for_blob(self, blob):
|
||||
def _save_peer_info(blob_hash, peers):
|
||||
v = {blob_hash: peers}
|
||||
self.availability.update(v)
|
||||
return v
|
||||
|
||||
d = self._peer_finder.find_peers_for_blob(blob)
|
||||
d.addCallback(lambda r: [[c.host, c.port, c.is_available()] for c in r])
|
||||
d.addCallback(lambda peers: _save_peer_info(blob, peers))
|
||||
return d
|
||||
|
||||
def _update_mine(self):
|
||||
def _get_peers(blobs):
|
||||
dl = []
|
||||
for hash in blobs:
|
||||
dl.append(self._update_peers_for_blob(hash))
|
||||
return defer.DeferredList(dl)
|
||||
|
||||
def sample(blobs):
|
||||
return random.sample(blobs, min(len(blobs), 10))
|
||||
|
||||
start = time.time()
|
||||
log.debug('==> Updating the peers for my blobs')
|
||||
d = self._blob_manager.get_all_verified_blobs()
|
||||
# as far as I can tell, this only is used to set _last_mean_availability
|
||||
# which... seems like a very expensive operation for such little payoff.
|
||||
# so taking a sample should get about the same effect as querying the entire
|
||||
# list of blobs
|
||||
d.addCallback(sample)
|
||||
d.addCallback(_get_peers)
|
||||
d.addCallback(lambda _: self._set_mean_peers())
|
||||
d.addCallback(lambda _: log.debug('<== Done updating peers for my blobs. Took %s seconds',
|
||||
time.time() - start))
|
||||
# although unused, need to return or else the looping call
|
||||
# could overrun on a previous call
|
||||
return d
|
||||
|
||||
def _set_mean_peers(self):
|
||||
num_peers = [len(self.availability[blob]) for blob in self.availability]
|
||||
mean = Decimal(sum(num_peers)) / Decimal(max(1, len(num_peers)))
|
||||
self._last_mean_availability = mean
|
||||
|
|
@ -1,56 +0,0 @@
|
|||
from decimal import Decimal
|
||||
|
||||
|
||||
def get_default_price_model(blob_tracker, base_price, **kwargs):
|
||||
return MeanAvailabilityWeightedPrice(blob_tracker, base_price, **kwargs)
|
||||
|
||||
|
||||
class ZeroPrice:
|
||||
def __init__(self):
|
||||
self.base_price = 0.0
|
||||
|
||||
def calculate_price(self, blob):
|
||||
return 0.0
|
||||
|
||||
|
||||
class MeanAvailabilityWeightedPrice:
|
||||
"""Calculate mean-blob-availability and stream-position weighted price for a blob
|
||||
|
||||
Attributes:
|
||||
base_price (float): base price
|
||||
alpha (float): constant, > 0.0 and <= 1.0, used to more highly
|
||||
value blobs at the beginning of a stream.
|
||||
alpha defaults to 1.0, which has a null effect
|
||||
blob_tracker (BlobAvailabilityTracker): blob availability tracker
|
||||
|
||||
"""
|
||||
|
||||
def __init__(self, tracker, base_price, alpha=1.0):
|
||||
self.blob_tracker = tracker
|
||||
self.base_price = Decimal(base_price)
|
||||
self.alpha = Decimal(alpha)
|
||||
|
||||
def calculate_price(self, blob):
|
||||
mean_availability = self.blob_tracker.last_mean_availability
|
||||
availability = self.blob_tracker.availability.get(blob, [])
|
||||
index = 0 # blob.index
|
||||
availability_mult = self._get_availability_multiplier(mean_availability, availability)
|
||||
price = self.base_price * availability_mult / self._frontload(index)
|
||||
return round(price, 5)
|
||||
|
||||
def _get_availability_multiplier(self, mean_availability, availability):
|
||||
return Decimal(max(1, mean_availability) / Decimal(max(1, len(availability))))
|
||||
|
||||
def _frontload(self, index):
|
||||
"""Get front-load multiplier, used to weight prices of blobs in a
|
||||
stream towards the front of the stream.
|
||||
|
||||
At index 0, returns 1.0
|
||||
As index increases, return value approaches 2.0
|
||||
|
||||
@param index: blob position in stream
|
||||
@return: front-load multiplier
|
||||
|
||||
"""
|
||||
|
||||
return Decimal(2.0) - (self.alpha ** index)
|
||||
|
|
@ -1,154 +0,0 @@
|
|||
import logging
|
||||
|
||||
from twisted.internet import task
|
||||
|
||||
|
||||
log = logging.getLogger(__name__)
|
||||
|
||||
|
||||
class DummyRateLimiter:
|
||||
def __init__(self):
|
||||
self.dl_bytes_this_second = 0
|
||||
self.ul_bytes_this_second = 0
|
||||
self.total_dl_bytes = 0
|
||||
self.total_ul_bytes = 0
|
||||
self.target_dl = 0
|
||||
self.target_ul = 0
|
||||
self.tick_call = None
|
||||
|
||||
def start(self):
|
||||
self.tick_call = task.LoopingCall(self.tick)
|
||||
self.tick_call.start(1)
|
||||
|
||||
def tick(self):
|
||||
self.dl_bytes_this_second = 0
|
||||
self.ul_bytes_this_second = 0
|
||||
|
||||
def stop(self):
|
||||
if self.tick_call is not None:
|
||||
self.tick_call.stop()
|
||||
self.tick_call = None
|
||||
|
||||
def set_dl_limit(self, limit):
|
||||
pass
|
||||
|
||||
def set_ul_limit(self, limit):
|
||||
pass
|
||||
|
||||
def report_dl_bytes(self, num_bytes):
|
||||
self.dl_bytes_this_second += num_bytes
|
||||
self.total_dl_bytes += num_bytes
|
||||
|
||||
def report_ul_bytes(self, num_bytes):
|
||||
self.ul_bytes_this_second += num_bytes
|
||||
self.total_ul_bytes += num_bytes
|
||||
|
||||
|
||||
class RateLimiter:
|
||||
"""This class ensures that upload and download rates don't exceed specified maximums"""
|
||||
|
||||
#implements(IRateLimiter)
|
||||
|
||||
#called by main application
|
||||
|
||||
def __init__(self, max_dl_bytes=None, max_ul_bytes=None):
|
||||
self.max_dl_bytes = max_dl_bytes
|
||||
self.max_ul_bytes = max_ul_bytes
|
||||
self.dl_bytes_this_interval = 0
|
||||
self.ul_bytes_this_interval = 0
|
||||
self.total_dl_bytes = 0
|
||||
self.total_ul_bytes = 0
|
||||
self.tick_call = None
|
||||
self.tick_interval = 0.1
|
||||
|
||||
self.dl_throttled = False
|
||||
self.ul_throttled = False
|
||||
|
||||
self.protocols = []
|
||||
|
||||
def start(self):
|
||||
log.info("Starting rate limiter.")
|
||||
self.tick_call = task.LoopingCall(self.tick)
|
||||
self.tick_call.start(self.tick_interval)
|
||||
|
||||
def tick(self):
|
||||
self.dl_bytes_this_interval = 0
|
||||
self.ul_bytes_this_interval = 0
|
||||
self.unthrottle_dl()
|
||||
self.unthrottle_ul()
|
||||
|
||||
def stop(self):
|
||||
log.info("Stopping rate limiter.")
|
||||
if self.tick_call is not None:
|
||||
self.tick_call.stop()
|
||||
self.tick_call = None
|
||||
|
||||
def set_dl_limit(self, limit):
|
||||
self.max_dl_bytes = limit
|
||||
|
||||
def set_ul_limit(self, limit):
|
||||
self.max_ul_bytes = limit
|
||||
|
||||
#throttling
|
||||
|
||||
def check_dl(self):
|
||||
need_throttle = (self.max_dl_bytes is not None and
|
||||
self.dl_bytes_this_interval > self.max_dl_bytes * self.tick_interval)
|
||||
if need_throttle:
|
||||
from twisted.internet import reactor
|
||||
reactor.callLater(0, self.throttle_dl)
|
||||
|
||||
def check_ul(self):
|
||||
need_throttle = (self.max_ul_bytes is not None and
|
||||
self.ul_bytes_this_interval > self.max_ul_bytes * self.tick_interval)
|
||||
if need_throttle:
|
||||
from twisted.internet import reactor
|
||||
reactor.callLater(0, self.throttle_ul)
|
||||
|
||||
def throttle_dl(self):
|
||||
if self.dl_throttled is False:
|
||||
for protocol in self.protocols:
|
||||
protocol.throttle_download()
|
||||
self.dl_throttled = True
|
||||
|
||||
def throttle_ul(self):
|
||||
if self.ul_throttled is False:
|
||||
for protocol in self.protocols:
|
||||
protocol.throttle_upload()
|
||||
self.ul_throttled = True
|
||||
|
||||
def unthrottle_dl(self):
|
||||
if self.dl_throttled is True:
|
||||
for protocol in self.protocols:
|
||||
protocol.unthrottle_download()
|
||||
self.dl_throttled = False
|
||||
|
||||
def unthrottle_ul(self):
|
||||
if self.ul_throttled is True:
|
||||
for protocol in self.protocols:
|
||||
protocol.unthrottle_upload()
|
||||
self.ul_throttled = False
|
||||
|
||||
#called by protocols
|
||||
|
||||
def report_dl_bytes(self, num_bytes):
|
||||
self.dl_bytes_this_interval += num_bytes
|
||||
self.total_dl_bytes += num_bytes
|
||||
self.check_dl()
|
||||
|
||||
def report_ul_bytes(self, num_bytes):
|
||||
self.ul_bytes_this_interval += num_bytes
|
||||
self.total_ul_bytes += num_bytes
|
||||
self.check_ul()
|
||||
|
||||
def register_protocol(self, protocol):
|
||||
if protocol not in self.protocols:
|
||||
self.protocols.append(protocol)
|
||||
if self.dl_throttled is True:
|
||||
protocol.throttle_download()
|
||||
if self.ul_throttled is True:
|
||||
protocol.throttle_upload()
|
||||
|
||||
def unregister_protocol(self, protocol):
|
||||
if protocol in self.protocols:
|
||||
self.protocols.remove(protocol)
|
||||
|
|
@ -1,109 +0,0 @@
|
|||
import logging
|
||||
import shutil
|
||||
import tempfile
|
||||
|
||||
from twisted.internet import defer, reactor
|
||||
|
||||
from lbrynet.extras.compat import d2f
|
||||
from lbrynet.blob.blob_file import BlobFile
|
||||
from lbrynet.p2p.BlobManager import DiskBlobManager
|
||||
from lbrynet.p2p.RateLimiter import DummyRateLimiter
|
||||
from lbrynet.p2p.PaymentRateManager import OnlyFreePaymentsManager
|
||||
from lbrynet.p2p.client.BlobRequester import BlobRequester
|
||||
from lbrynet.p2p.client.StandaloneBlobDownloader import StandaloneBlobDownloader
|
||||
from lbrynet.p2p.client.ConnectionManager import ConnectionManager
|
||||
from lbrynet.extras.daemon.storage import SQLiteStorage
|
||||
from lbrynet.extras.daemon.PeerFinder import DummyPeerFinder
|
||||
from lbrynet.conf import Config
|
||||
|
||||
|
||||
log = logging.getLogger(__name__)
|
||||
|
||||
|
||||
class SinglePeerFinder(DummyPeerFinder):
|
||||
def __init__(self, peer):
|
||||
super().__init__()
|
||||
self.peer = peer
|
||||
|
||||
def find_peers_for_blob(self, blob_hash, timeout=None, filter_self=False):
|
||||
return defer.succeed([self.peer])
|
||||
|
||||
|
||||
class BlobCallback(BlobFile):
|
||||
def __init__(self, blob_dir, blob_hash, timeout):
|
||||
super().__init__(blob_dir, blob_hash)
|
||||
self.callback = defer.Deferred()
|
||||
reactor.callLater(timeout, self._cancel)
|
||||
|
||||
def _cancel(self):
|
||||
if not self.callback.called:
|
||||
self.callback.callback(False)
|
||||
|
||||
def save_verified_blob(self, writer):
|
||||
result = BlobFile.save_verified_blob(self, writer)
|
||||
if not self.callback.called:
|
||||
self.callback.callback(True)
|
||||
return result
|
||||
|
||||
|
||||
class SingleBlobDownloadManager:
|
||||
def __init__(self, blob):
|
||||
self.blob = blob
|
||||
|
||||
def needed_blobs(self):
|
||||
if self.blob.verified:
|
||||
return []
|
||||
else:
|
||||
return [self.blob]
|
||||
|
||||
def get_head_blob_hash(self):
|
||||
return self.blob.blob_hash
|
||||
|
||||
|
||||
class SinglePeerDownloader:
|
||||
def __init__(self, conf: Config):
|
||||
self.conf = conf
|
||||
self._payment_rate_manager = OnlyFreePaymentsManager()
|
||||
self._rate_limiter = DummyRateLimiter()
|
||||
self._wallet = None
|
||||
self._blob_manager = None
|
||||
|
||||
def setup(self, wallet, blob_manager=None):
|
||||
if not self._wallet:
|
||||
self._wallet = wallet
|
||||
if not self._blob_manager:
|
||||
self._blob_manager = blob_manager
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def download_blob_from_peer(self, peer, timeout, blob_hash, blob_manager):
|
||||
log.debug("Try to download %s from %s", blob_hash, peer.host)
|
||||
blob_manager = blob_manager
|
||||
blob = BlobCallback(blob_manager.blob_dir, blob_hash, timeout)
|
||||
download_manager = SingleBlobDownloadManager(blob)
|
||||
peer_finder = SinglePeerFinder(peer)
|
||||
requester = BlobRequester(blob_manager, peer_finder, self._payment_rate_manager,
|
||||
self._wallet, download_manager)
|
||||
downloader = StandaloneBlobDownloader(self.conf, blob_hash, blob_manager, peer_finder,
|
||||
self._rate_limiter, self._payment_rate_manager,
|
||||
self._wallet, timeout=timeout)
|
||||
info_exchanger = self._wallet.get_info_exchanger()
|
||||
connection_manager = ConnectionManager(downloader, self._rate_limiter, [requester],
|
||||
[info_exchanger])
|
||||
connection_manager.start()
|
||||
|
||||
result = yield blob.callback
|
||||
if not result:
|
||||
log.debug("Failed to downloaded %s from %s", blob_hash[:16], peer.host)
|
||||
yield connection_manager.stop()
|
||||
defer.returnValue(result)
|
||||
|
||||
async def download_temp_blob_from_peer(self, peer, timeout, blob_hash):
|
||||
tmp_storage = SQLiteStorage(Config(), ':memory:')
|
||||
await tmp_storage.open()
|
||||
tmp_dir = tempfile.mkdtemp()
|
||||
tmp_blob_manager = DiskBlobManager(tmp_dir, tmp_storage)
|
||||
try:
|
||||
return await d2f(self.download_blob_from_peer(peer, timeout, blob_hash, tmp_blob_manager))
|
||||
finally:
|
||||
await tmp_storage.close()
|
||||
shutil.rmtree(tmp_dir)
|
||||
|
|
@ -1,143 +0,0 @@
|
|||
from decimal import Decimal
|
||||
from lbrynet.p2p.Offer import Offer
|
||||
from lbrynet.p2p.PriceModel import MeanAvailabilityWeightedPrice, ZeroPrice
|
||||
|
||||
|
||||
def get_default_strategy(blob_tracker, base_price, is_generous, **kwargs):
|
||||
return BasicAvailabilityWeightedStrategy(blob_tracker, base_price, is_generous, **kwargs)
|
||||
|
||||
|
||||
class Strategy:
|
||||
"""
|
||||
Base for negotiation strategies
|
||||
"""
|
||||
|
||||
def __init__(self, price_model, max_rate, min_rate, is_generous):
|
||||
self.price_model = price_model
|
||||
self.is_generous = is_generous
|
||||
self.accepted_offers = {}
|
||||
self.pending_sent_offers = {}
|
||||
self.offers_sent = {}
|
||||
self.offers_received = {}
|
||||
self.max_rate = max_rate or Decimal(self.price_model.base_price * 50)
|
||||
self.min_rate = Decimal(min_rate)
|
||||
|
||||
def _make_rate_offer(self, rates, offer_count):
|
||||
return NotImplementedError()
|
||||
|
||||
def _get_response_rate(self, rates, offer_count):
|
||||
return NotImplementedError()
|
||||
|
||||
def make_offer(self, peer, blobs):
|
||||
offer_count = self.offers_sent.get(peer, 0)
|
||||
self._add_offer_sent(peer)
|
||||
if peer in self.accepted_offers:
|
||||
# if there was a previous accepted offer, use that
|
||||
offer = self.accepted_offers[peer]
|
||||
if peer in self.pending_sent_offers:
|
||||
del self.pending_sent_offers[peer]
|
||||
elif offer_count == 0 and self.is_generous:
|
||||
# Try asking for it for free
|
||||
offer = Offer(Decimal(0.0))
|
||||
self.pending_sent_offers.update({peer: offer})
|
||||
else:
|
||||
rates = [self.price_model.calculate_price(blob) for blob in blobs]
|
||||
price = self._make_rate_offer(rates, offer_count)
|
||||
offer = Offer(price)
|
||||
self.pending_sent_offers.update({peer: offer})
|
||||
return offer
|
||||
|
||||
def respond_to_offer(self, offer, peer, blobs):
|
||||
offer_count = self.offers_received.get(peer, 0)
|
||||
self._add_offer_received(peer)
|
||||
rates = [self.price_model.calculate_price(blob) for blob in blobs]
|
||||
price = self._get_response_rate(rates, offer_count)
|
||||
if peer in self.accepted_offers:
|
||||
offer = self.accepted_offers[peer]
|
||||
elif offer.rate == 0.0 and offer_count == 0 and self.is_generous:
|
||||
# give blobs away for free by default on the first request
|
||||
offer.accept()
|
||||
self.accepted_offers.update({peer: offer})
|
||||
elif offer.rate >= price:
|
||||
offer.accept()
|
||||
self.accepted_offers.update({peer: offer})
|
||||
else:
|
||||
offer.reject()
|
||||
if peer in self.accepted_offers:
|
||||
del self.accepted_offers[peer]
|
||||
return offer
|
||||
|
||||
def update_accepted_offers(self, peer, offer):
|
||||
if not offer.is_accepted and peer in self.accepted_offers:
|
||||
del self.accepted_offers[peer]
|
||||
if offer.is_accepted:
|
||||
self.accepted_offers.update({peer: offer})
|
||||
self.pending_sent_offers.update({peer: offer})
|
||||
|
||||
def _add_offer_sent(self, peer):
|
||||
turn = self.offers_sent.get(peer, 0) + 1
|
||||
self.offers_sent.update({peer: turn})
|
||||
|
||||
def _add_offer_received(self, peer):
|
||||
turn = self.offers_received.get(peer, 0) + 1
|
||||
self.offers_received.update({peer: turn})
|
||||
|
||||
def _bounded_price(self, price):
|
||||
price_for_return = Decimal(min(self.max_rate, max(price, self.min_rate)))
|
||||
return price_for_return
|
||||
|
||||
|
||||
class BasicAvailabilityWeightedStrategy(Strategy):
|
||||
"""Basic strategy to target blob prices based on supply relative to mean supply
|
||||
|
||||
Discount price target with each incoming request, and raise it
|
||||
with each outgoing from the modeled price until the rate is
|
||||
accepted or a threshold is reached
|
||||
|
||||
"""
|
||||
|
||||
def __init__(self, blob_tracker, base_price, is_generous,
|
||||
acceleration=1.25, deceleration=0.9, max_rate=None,
|
||||
min_rate=0.0, alpha=1.0):
|
||||
price_model = MeanAvailabilityWeightedPrice(
|
||||
blob_tracker, base_price, alpha=alpha)
|
||||
super().__init__(price_model, max_rate, min_rate, is_generous)
|
||||
self._acceleration = Decimal(acceleration) # rate of how quickly to ramp offer
|
||||
self._deceleration = Decimal(deceleration)
|
||||
|
||||
def _get_mean_rate(self, rates):
|
||||
mean_rate = Decimal(sum(rates)) / Decimal(max(len(rates), 1))
|
||||
return mean_rate
|
||||
|
||||
def _premium(self, rate, turn):
|
||||
return rate * (self._acceleration ** Decimal(turn))
|
||||
|
||||
def _discount(self, rate, turn):
|
||||
return rate * (self._deceleration ** Decimal(turn))
|
||||
|
||||
def _get_response_rate(self, rates, offer_count):
|
||||
rate = self._get_mean_rate(rates)
|
||||
discounted = self._discount(rate, offer_count)
|
||||
rounded_price = round(discounted, 5)
|
||||
return self._bounded_price(rounded_price)
|
||||
|
||||
def _make_rate_offer(self, rates, offer_count):
|
||||
rate = self._get_mean_rate(rates)
|
||||
with_premium = self._premium(rate, offer_count)
|
||||
rounded_price = round(with_premium, 5)
|
||||
return self._bounded_price(rounded_price)
|
||||
|
||||
|
||||
class OnlyFreeStrategy(Strategy):
|
||||
def __init__(self, *args, **kwargs):
|
||||
price_model = ZeroPrice()
|
||||
super().__init__(price_model, 0.0, 0.0, True)
|
||||
|
||||
def _get_mean_rate(self, rates):
|
||||
return 0.0
|
||||
|
||||
def _get_response_rate(self, rates, offer_count):
|
||||
return 0.0
|
||||
|
||||
def _make_rate_offer(self, rates, offer_count):
|
||||
return 0.0
|
||||
|
|
@ -1,590 +0,0 @@
|
|||
import logging
|
||||
from collections import defaultdict
|
||||
from decimal import Decimal
|
||||
|
||||
from twisted.internet import defer
|
||||
from twisted.python.failure import Failure
|
||||
from twisted.internet.error import ConnectionAborted
|
||||
|
||||
from lbrynet.p2p.Error import ConnectionClosedBeforeResponseError
|
||||
from lbrynet.p2p.Error import InvalidResponseError, RequestCanceledError, NoResponseError
|
||||
from lbrynet.p2p.Error import PriceDisagreementError, DownloadCanceledError, InsufficientFundsError
|
||||
from lbrynet.p2p.client.ClientRequest import ClientRequest, ClientBlobRequest
|
||||
from lbrynet.p2p.Offer import Offer
|
||||
|
||||
|
||||
log = logging.getLogger(__name__)
|
||||
|
||||
|
||||
def get_points(num_bytes, rate):
|
||||
if isinstance(rate, float):
|
||||
return 1.0 * num_bytes * rate / 2**20
|
||||
elif isinstance(rate, Decimal):
|
||||
return 1.0 * num_bytes * float(rate) / 2**20
|
||||
else:
|
||||
raise Exception("Unknown rate type")
|
||||
|
||||
|
||||
def cache(fn):
|
||||
"""Caches the function call for each instance"""
|
||||
attr = f'__{fn.__name__}_value'
|
||||
|
||||
def helper(self):
|
||||
if not hasattr(self, attr):
|
||||
value = fn(self)
|
||||
setattr(self, attr, value)
|
||||
return getattr(self, attr)
|
||||
return helper
|
||||
|
||||
|
||||
class BlobRequester:
|
||||
#implements(IRequestCreator)
|
||||
|
||||
def __init__(self, blob_manager, peer_finder, payment_rate_manager, wallet, download_manager):
|
||||
self.blob_manager = blob_manager
|
||||
self.peer_finder = peer_finder
|
||||
self.payment_rate_manager = payment_rate_manager
|
||||
self.wallet = wallet
|
||||
self._download_manager = download_manager
|
||||
self._peers = defaultdict(int) # {Peer: score}
|
||||
self._available_blobs = defaultdict(list) # {Peer: [blob_hash]}
|
||||
self._unavailable_blobs = defaultdict(list) # {Peer: [blob_hash]}}
|
||||
self._protocol_prices = {} # {ClientProtocol: price}
|
||||
self._protocol_offers = {}
|
||||
self._price_disagreements = [] # [Peer]
|
||||
self._protocol_tries = {}
|
||||
self._maxed_out_peers = []
|
||||
self._incompatible_peers = []
|
||||
|
||||
######## IRequestCreator #########
|
||||
def send_next_request(self, peer, protocol):
|
||||
"""Makes an availability request, download request and price request"""
|
||||
if not self.should_send_next_request(peer):
|
||||
return defer.succeed(False)
|
||||
return self._send_next_request(peer, protocol)
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def get_new_peers_for_head_blob(self):
|
||||
""" look for peers for the head blob """
|
||||
head_blob_hash = self._download_manager.get_head_blob_hash()
|
||||
peers = yield self._find_peers_for_hash(head_blob_hash)
|
||||
defer.returnValue(peers)
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def get_new_peers_for_next_unavailable(self):
|
||||
"""
|
||||
Look for peers for the next unavailable blob, if we have
|
||||
all blobs, return an empty list
|
||||
"""
|
||||
blob_hash = yield self._get_hash_for_peer_search()
|
||||
if blob_hash is None:
|
||||
defer.returnValue([])
|
||||
peers = yield self._find_peers_for_hash(blob_hash)
|
||||
defer.returnValue(peers)
|
||||
|
||||
######### internal calls #########
|
||||
def should_send_next_request(self, peer):
|
||||
return (
|
||||
self._blobs_to_download() and
|
||||
self._should_send_request_to(peer)
|
||||
)
|
||||
|
||||
def _send_next_request(self, peer, protocol):
|
||||
log.debug('Sending a blob request for %s and %s', peer, protocol)
|
||||
availability = AvailabilityRequest(self, peer, protocol, self.payment_rate_manager)
|
||||
head_blob_hash = self._download_manager.get_head_blob_hash()
|
||||
download = DownloadRequest(self, peer, protocol, self.payment_rate_manager,
|
||||
self.wallet, head_blob_hash)
|
||||
price = PriceRequest(self, peer, protocol, self.payment_rate_manager)
|
||||
|
||||
sent_request = False
|
||||
if availability.can_make_request():
|
||||
availability.make_request_and_handle_response()
|
||||
sent_request = True
|
||||
if price.can_make_request():
|
||||
# TODO: document why a PriceRequest is only made if an
|
||||
# Availability or Download request was made
|
||||
price.make_request_and_handle_response()
|
||||
sent_request = True
|
||||
if download.can_make_request():
|
||||
try:
|
||||
download.make_request_and_handle_response()
|
||||
sent_request = True
|
||||
except InsufficientFundsError as err:
|
||||
return defer.fail(err)
|
||||
|
||||
return defer.succeed(sent_request)
|
||||
|
||||
def _get_hash_for_peer_search(self):
|
||||
"""
|
||||
Get next unavailable hash for blob,
|
||||
returns None if there is nothing left to download
|
||||
"""
|
||||
r = None
|
||||
blobs_to_download = self._blobs_to_download()
|
||||
if blobs_to_download:
|
||||
blobs_without_sources = self._blobs_without_sources()
|
||||
if not blobs_without_sources:
|
||||
blob_hash = blobs_to_download[0].blob_hash
|
||||
else:
|
||||
blob_hash = blobs_without_sources[0].blob_hash
|
||||
r = blob_hash
|
||||
log.debug("Blob requester peer search response: %s", str(r))
|
||||
return defer.succeed(r)
|
||||
|
||||
def _find_peers_for_hash(self, h):
|
||||
d = self.peer_finder.find_peers_for_blob(h, filter_self=True)
|
||||
|
||||
def choose_best_peers(peers):
|
||||
bad_peers = self._get_bad_peers()
|
||||
without_bad_peers = [p for p in peers if not p in bad_peers]
|
||||
without_maxed_out_peers = [
|
||||
p for p in without_bad_peers if p not in self._maxed_out_peers]
|
||||
return without_maxed_out_peers
|
||||
|
||||
d.addCallback(choose_best_peers)
|
||||
|
||||
def lookup_failed(err):
|
||||
log.error("An error occurred looking up peers for a hash: %s", err.getTraceback())
|
||||
return []
|
||||
|
||||
d.addErrback(lookup_failed)
|
||||
return d
|
||||
|
||||
def _should_send_request_to(self, peer):
|
||||
if self._peers[peer] < -5.0:
|
||||
return False
|
||||
if peer in self._price_disagreements:
|
||||
return False
|
||||
if peer in self._incompatible_peers:
|
||||
return False
|
||||
return True
|
||||
|
||||
def _get_bad_peers(self):
|
||||
return [p for p in self._peers.keys() if not self._should_send_request_to(p)]
|
||||
|
||||
def _hash_available(self, blob_hash):
|
||||
for peer in self._available_blobs:
|
||||
if blob_hash in self._available_blobs[peer]:
|
||||
return True
|
||||
return False
|
||||
|
||||
def _hash_available_on(self, blob_hash, peer):
|
||||
if blob_hash in self._available_blobs[peer]:
|
||||
return True
|
||||
return False
|
||||
|
||||
def _blobs_to_download(self):
|
||||
needed_blobs = self._download_manager.needed_blobs()
|
||||
return sorted(needed_blobs, key=lambda b: b.is_downloading())
|
||||
|
||||
def _blobs_without_sources(self):
|
||||
return [
|
||||
b for b in self._download_manager.needed_blobs()
|
||||
if not self._hash_available(b.blob_hash)
|
||||
]
|
||||
|
||||
def _price_settled(self, protocol):
|
||||
if protocol in self._protocol_prices:
|
||||
return True
|
||||
return False
|
||||
|
||||
def _update_local_score(self, peer, amount):
|
||||
self._peers[peer] += amount
|
||||
|
||||
|
||||
class RequestHelper:
|
||||
def __init__(self, requestor, peer, protocol, payment_rate_manager):
|
||||
self.requestor = requestor
|
||||
self.peer = peer
|
||||
self.protocol = protocol
|
||||
self.payment_rate_manager = payment_rate_manager
|
||||
|
||||
@property
|
||||
def protocol_prices(self):
|
||||
return self.requestor._protocol_prices
|
||||
|
||||
@property
|
||||
def protocol_offers(self):
|
||||
return self.requestor._protocol_offers
|
||||
|
||||
@property
|
||||
def available_blobs(self):
|
||||
return self.requestor._available_blobs[self.peer]
|
||||
|
||||
@property
|
||||
def unavailable_blobs(self):
|
||||
return self.requestor._unavailable_blobs[self.peer]
|
||||
|
||||
@property
|
||||
def maxed_out_peers(self):
|
||||
return self.requestor._maxed_out_peers
|
||||
|
||||
def update_local_score(self, score):
|
||||
self.requestor._update_local_score(self.peer, score)
|
||||
|
||||
def _request_failed(self, reason, request_type):
|
||||
if reason.check(DownloadCanceledError, RequestCanceledError, ConnectionAborted,
|
||||
ConnectionClosedBeforeResponseError, ValueError):
|
||||
return
|
||||
if reason.check(NoResponseError):
|
||||
self.requestor._incompatible_peers.append(self.peer)
|
||||
log.warning("A request of type '%s' failed. Reason: %s, Error type: %s",
|
||||
request_type, reason.getErrorMessage(), reason.type)
|
||||
self.update_local_score(-10.0)
|
||||
if isinstance(reason, (InvalidResponseError, NoResponseError)):
|
||||
self.peer.update_score(-10.0)
|
||||
else:
|
||||
self.peer.update_score(-2.0)
|
||||
return reason
|
||||
|
||||
def get_rate(self):
|
||||
if self.payment_rate_manager.price_limit_reached(self.peer):
|
||||
if self.peer not in self.maxed_out_peers:
|
||||
self.maxed_out_peers.append(self.peer)
|
||||
return None
|
||||
rate = self.protocol_prices.get(self.protocol)
|
||||
if rate is None:
|
||||
if self.peer in self.payment_rate_manager.strategy.pending_sent_offers:
|
||||
pending = self.payment_rate_manager.strategy.pending_sent_offers[self.peer]
|
||||
if not pending.is_too_low and not pending.is_accepted:
|
||||
return pending.rate
|
||||
rate = self.payment_rate_manager.get_rate_blob_data(self.peer, self.available_blobs)
|
||||
return rate
|
||||
|
||||
|
||||
def _handle_incoming_blob(response_dict, peer, request):
|
||||
if request.response_identifier not in response_dict:
|
||||
return InvalidResponseError("response identifier not in response")
|
||||
if not isinstance(response_dict[request.response_identifier], dict):
|
||||
return InvalidResponseError("response not a dict. got %s" %
|
||||
type(response_dict[request.response_identifier]))
|
||||
response = response_dict[request.response_identifier]
|
||||
if 'error' in response:
|
||||
# This means we're not getting our blob for some reason
|
||||
if response['error'] == "RATE_UNSET":
|
||||
# Stop the download with an error that won't penalize the peer
|
||||
request.cancel(PriceDisagreementError())
|
||||
else:
|
||||
# The peer has done something bad so we should get out of here
|
||||
return InvalidResponseError("Got an unknown error from the peer: %s" %
|
||||
(response['error'],))
|
||||
else:
|
||||
if 'blob_hash' not in response:
|
||||
return InvalidResponseError("Missing the required field 'blob_hash'")
|
||||
if not response['blob_hash'] == request.request_dict['requested_blob']:
|
||||
return InvalidResponseError(
|
||||
"Incoming blob does not match expected. Incoming: %s. Expected: %s" %
|
||||
(response['blob_hash'], request.request_dict['requested_blob'])
|
||||
)
|
||||
if 'length' not in response:
|
||||
return InvalidResponseError("Missing the required field 'length'")
|
||||
if not request.blob.set_length(response['length']):
|
||||
return InvalidResponseError("Could not set the length of the blob")
|
||||
return True
|
||||
|
||||
|
||||
def _handle_download_error(err, peer, blob_to_download):
|
||||
if not err.check(DownloadCanceledError, PriceDisagreementError, RequestCanceledError,
|
||||
ConnectionClosedBeforeResponseError):
|
||||
log.warning("An error occurred while downloading %s from %s. Error: %s",
|
||||
blob_to_download.blob_hash, str(peer), err.getTraceback())
|
||||
if err.check(PriceDisagreementError):
|
||||
# Don't kill the whole connection just because a price couldn't be agreed upon.
|
||||
# Other information might be desired by other request creators at a better rate.
|
||||
return True
|
||||
return err
|
||||
|
||||
|
||||
class AvailabilityRequest(RequestHelper):
|
||||
"""Ask a peer what blobs it has available.
|
||||
|
||||
Results are saved in `_available_blobs` and `_unavailable_blobs`
|
||||
on the parent BlobRequester.
|
||||
"""
|
||||
def can_make_request(self):
|
||||
return self.get_top_needed_blobs()
|
||||
|
||||
def make_request_and_handle_response(self):
|
||||
request = self._get_request()
|
||||
self._handle_request(request)
|
||||
|
||||
def _get_request(self):
|
||||
to_request = self.get_top_needed_blobs()
|
||||
if not to_request:
|
||||
raise Exception('Unable to make a request without available blobs')
|
||||
return self._make_request(to_request)
|
||||
|
||||
@cache
|
||||
def get_top_needed_blobs(self, limit=20):
|
||||
all_needed = [
|
||||
b.blob_hash for b in self.requestor._blobs_to_download()
|
||||
if not self.is_available(b)
|
||||
]
|
||||
# sort them so that the peer will be asked first for blobs it
|
||||
# hasn't said it doesn't have
|
||||
sorted_needed = sorted(
|
||||
all_needed,
|
||||
key=lambda b: b in self.unavailable_blobs
|
||||
)
|
||||
return sorted_needed[:limit]
|
||||
|
||||
def is_available(self, blob):
|
||||
return blob.blob_hash in self.available_blobs
|
||||
|
||||
def _make_request(self, to_request):
|
||||
log.debug('Requesting blobs: %s', to_request)
|
||||
r_dict = {'requested_blobs': to_request}
|
||||
response_identifier = 'available_blobs'
|
||||
request = ClientRequest(r_dict, response_identifier)
|
||||
return request
|
||||
|
||||
def _handle_request(self, a_r):
|
||||
log.debug('making an availability request')
|
||||
d1 = self.protocol.add_request(a_r)
|
||||
d1.addCallback(self._handle_availability, a_r)
|
||||
d1.addErrback(self._request_failed, "availability request")
|
||||
|
||||
def _handle_availability(self, response_dict, request):
|
||||
assert request.response_identifier == 'available_blobs'
|
||||
if 'available_blobs' not in response_dict:
|
||||
raise InvalidResponseError("response identifier not in response")
|
||||
log.debug("Received a response to the availability request")
|
||||
# save available blobs
|
||||
blob_hashes = response_dict['available_blobs']
|
||||
if not blob_hashes:
|
||||
# should not send any more requests as it doesn't have any blob we need
|
||||
self.update_local_score(-10.0)
|
||||
return True
|
||||
for blob_hash in blob_hashes:
|
||||
if blob_hash in request.request_dict['requested_blobs']:
|
||||
self.process_available_blob_hash(blob_hash, request)
|
||||
# everything left in the request is missing
|
||||
for blob_hash in request.request_dict['requested_blobs']:
|
||||
self.unavailable_blobs.append(blob_hash)
|
||||
return True
|
||||
|
||||
def process_available_blob_hash(self, blob_hash, request):
|
||||
log.debug("The server has indicated it has the following blob available: %s", blob_hash)
|
||||
self.available_blobs.append(blob_hash)
|
||||
self.remove_from_unavailable_blobs(blob_hash)
|
||||
request.request_dict['requested_blobs'].remove(blob_hash)
|
||||
|
||||
def remove_from_unavailable_blobs(self, blob_hash):
|
||||
if blob_hash in self.unavailable_blobs:
|
||||
self.unavailable_blobs.remove(blob_hash)
|
||||
|
||||
|
||||
class PriceRequest(RequestHelper):
|
||||
"""Ask a peer if a certain price is acceptable"""
|
||||
def can_make_request(self):
|
||||
if len(self.available_blobs) and self.protocol not in self.protocol_prices:
|
||||
return self.get_rate() is not None
|
||||
return False
|
||||
|
||||
def make_request_and_handle_response(self):
|
||||
request = self._get_price_request()
|
||||
self._handle_price_request(request)
|
||||
|
||||
def _get_price_request(self):
|
||||
rate = self.get_rate()
|
||||
if rate is None:
|
||||
log.debug("No blobs to request from %s", self.peer)
|
||||
raise Exception('Cannot make a price request without a payment rate')
|
||||
log.debug("Offer rate %s to %s for %i blobs", rate, self.peer, len(self.available_blobs))
|
||||
|
||||
request_dict = {'blob_data_payment_rate': rate}
|
||||
assert self.protocol not in self.protocol_offers
|
||||
self.protocol_offers[self.protocol] = rate
|
||||
return ClientRequest(request_dict, 'blob_data_payment_rate')
|
||||
|
||||
def _handle_price_request(self, price_request):
|
||||
d = self.protocol.add_request(price_request)
|
||||
d.addCallback(self._handle_price_response, price_request)
|
||||
d.addErrback(self._request_failed, "price request")
|
||||
|
||||
def _handle_price_response(self, response_dict, request):
|
||||
assert request.response_identifier == 'blob_data_payment_rate'
|
||||
if 'blob_data_payment_rate' not in response_dict:
|
||||
return InvalidResponseError("response identifier not in response")
|
||||
offer_value = self.protocol_offers.pop(self.protocol)
|
||||
offer = Offer(offer_value)
|
||||
offer.handle(response_dict['blob_data_payment_rate'])
|
||||
self.payment_rate_manager.record_offer_reply(self.peer, offer)
|
||||
if offer.is_accepted:
|
||||
log.info("Offered rate %f/mb accepted by %s", offer.rate, self.peer.host)
|
||||
self.protocol_prices[self.protocol] = offer.rate
|
||||
return True
|
||||
elif offer.is_too_low:
|
||||
log.debug("Offered rate %f/mb rejected by %s", offer.rate, self.peer.host)
|
||||
return not self.payment_rate_manager.price_limit_reached(self.peer)
|
||||
else:
|
||||
log.warning("Price disagreement")
|
||||
self.requestor._price_disagreements.append(self.peer)
|
||||
return False
|
||||
|
||||
|
||||
class DownloadRequest(RequestHelper):
|
||||
"""Choose a blob and download it from a peer and also pay the peer for the data."""
|
||||
def __init__(self, requester, peer, protocol, payment_rate_manager, wallet, head_blob_hash):
|
||||
super().__init__(requester, peer, protocol, payment_rate_manager)
|
||||
self.wallet = wallet
|
||||
self.head_blob_hash = head_blob_hash
|
||||
|
||||
def can_make_request(self):
|
||||
if self.protocol in self.protocol_prices:
|
||||
return self.get_blob_details()
|
||||
return False
|
||||
|
||||
def make_request_and_handle_response(self):
|
||||
request = self._get_request()
|
||||
self._handle_download_request(request)
|
||||
|
||||
def _get_request(self):
|
||||
blob_details = self.get_blob_details()
|
||||
if not blob_details:
|
||||
raise Exception('No blobs available to download')
|
||||
return self._make_request(blob_details)
|
||||
|
||||
@cache
|
||||
def get_blob_details(self):
|
||||
"""Open a blob for writing and return the details.
|
||||
|
||||
If no blob can be opened, returns None.
|
||||
"""
|
||||
to_download = self.get_available_blobs()
|
||||
return self.find_blob(to_download)
|
||||
|
||||
def get_available_blobs(self):
|
||||
available_blobs = [
|
||||
b for b in self.requestor._blobs_to_download()
|
||||
if self.requestor._hash_available_on(b.blob_hash, self.peer)
|
||||
]
|
||||
log.debug('available blobs: %s', available_blobs)
|
||||
return available_blobs
|
||||
|
||||
def find_blob(self, to_download):
|
||||
"""Return the first blob in `to_download` that is successfully opened for write."""
|
||||
for blob in to_download:
|
||||
if blob.get_is_verified():
|
||||
log.debug('Skipping blob %s as its already validated', blob)
|
||||
continue
|
||||
writer, d = blob.open_for_writing(self.peer)
|
||||
if d is not None:
|
||||
return BlobDownloadDetails(blob, d, writer.write, writer.close, self.peer)
|
||||
log.warning('Skipping blob %s as there was an issue opening it for writing', blob)
|
||||
return None
|
||||
|
||||
def _make_request(self, blob_details):
|
||||
blob = blob_details.blob
|
||||
request = ClientBlobRequest(
|
||||
{'requested_blob': blob.blob_hash},
|
||||
'incoming_blob',
|
||||
blob_details.counting_write_func,
|
||||
blob_details.deferred,
|
||||
blob_details.cancel_func,
|
||||
blob
|
||||
)
|
||||
log.info("Requesting blob %s from %s", blob.blob_hash, self.peer)
|
||||
return request
|
||||
|
||||
def _handle_download_request(self, client_blob_request):
|
||||
reserved_points = self.reserve_funds_or_cancel(client_blob_request)
|
||||
self.add_callbacks_to_download_request(client_blob_request, reserved_points)
|
||||
self.create_add_blob_request(client_blob_request)
|
||||
|
||||
def reserve_funds_or_cancel(self, client_blob_request):
|
||||
reserved_points = self._reserve_points(client_blob_request.max_pay_units)
|
||||
if reserved_points is not None:
|
||||
return reserved_points
|
||||
client_blob_request.cancel(InsufficientFundsError())
|
||||
client_blob_request.finished_deferred.addErrback(lambda _: True)
|
||||
raise InsufficientFundsError()
|
||||
|
||||
def add_callbacks_to_download_request(self, client_blob_request, reserved_points):
|
||||
# Note: The following three callbacks will be called when the blob has been
|
||||
# fully downloaded or canceled
|
||||
client_blob_request.finished_deferred.addCallbacks(
|
||||
self._download_succeeded,
|
||||
self._download_failed,
|
||||
callbackArgs=(client_blob_request.blob,),
|
||||
)
|
||||
client_blob_request.finished_deferred.addBoth(self._pay_or_cancel_payment,
|
||||
reserved_points, client_blob_request.blob)
|
||||
client_blob_request.finished_deferred.addErrback(_handle_download_error, self.peer,
|
||||
client_blob_request.blob)
|
||||
|
||||
def _pay_or_cancel_payment(self, arg, reserved_points, blob):
|
||||
if self._can_pay_peer(blob, arg):
|
||||
self._pay_peer(blob.length, reserved_points)
|
||||
else:
|
||||
self._cancel_points(reserved_points)
|
||||
return arg
|
||||
|
||||
def _can_pay_peer(self, blob, arg):
|
||||
return (
|
||||
blob.length != 0 and
|
||||
(not isinstance(arg, Failure) or arg.check(DownloadCanceledError))
|
||||
)
|
||||
|
||||
def _pay_peer(self, num_bytes, reserved_points):
|
||||
assert num_bytes != 0
|
||||
rate = self.get_rate()
|
||||
point_amount = get_points(num_bytes, rate)
|
||||
self.wallet.send_points(reserved_points, point_amount)
|
||||
self.payment_rate_manager.record_points_paid(point_amount)
|
||||
|
||||
def _cancel_points(self, reserved_points):
|
||||
self.wallet.cancel_point_reservation(reserved_points)
|
||||
|
||||
def create_add_blob_request(self, client_blob_request):
|
||||
d = self.protocol.add_blob_request(client_blob_request)
|
||||
# Note: The following two callbacks will be called as soon as the peer sends its
|
||||
# response, which will be before the blob has finished downloading, but may be
|
||||
# after the blob has been canceled. For example,
|
||||
# 1) client sends request to Peer A
|
||||
# 2) the blob is finished downloading from peer B, and therefore this one is canceled
|
||||
# 3) client receives response from Peer A
|
||||
# Therefore, these callbacks shouldn't rely on there being a blob about to be
|
||||
# downloaded.
|
||||
d.addCallback(_handle_incoming_blob, self.peer, client_blob_request)
|
||||
d.addErrback(self._request_failed, "download request")
|
||||
|
||||
def _reserve_points(self, num_bytes):
|
||||
# jobevers: there was an assertion here, but I don't think it
|
||||
# was a valid assertion to make. It is possible for a rate to
|
||||
# not yet been set for this protocol or for it to have been
|
||||
# removed so instead I switched it to check if a rate has been set
|
||||
# and calculate it if it has not
|
||||
rate = self.get_rate()
|
||||
points_to_reserve = get_points(num_bytes, rate)
|
||||
return self.wallet.reserve_points(self.peer, points_to_reserve)
|
||||
|
||||
def _download_succeeded(self, arg, blob):
|
||||
log.info("Blob %s has been successfully downloaded from %s", blob, self.peer)
|
||||
self.update_local_score(5.0)
|
||||
self.peer.update_stats('blobs_downloaded', 1)
|
||||
self.peer.update_score(5.0)
|
||||
should_announce = blob.blob_hash == self.head_blob_hash
|
||||
d = self.requestor.blob_manager.blob_completed(blob, should_announce=should_announce)
|
||||
d.addCallback(lambda _: arg)
|
||||
return d
|
||||
|
||||
def _download_failed(self, reason):
|
||||
if not reason.check(DownloadCanceledError, PriceDisagreementError):
|
||||
self.update_local_score(-10.0)
|
||||
return reason
|
||||
|
||||
|
||||
class BlobDownloadDetails:
|
||||
"""Contains the information needed to make a ClientBlobRequest from an open blob"""
|
||||
def __init__(self, blob, deferred, write_func, cancel_func, peer):
|
||||
self.blob = blob
|
||||
self.deferred = deferred
|
||||
self.write_func = write_func
|
||||
self.cancel_func = cancel_func
|
||||
self.peer = peer
|
||||
|
||||
def counting_write_func(self, data):
|
||||
self.peer.update_stats('blob_bytes_downloaded', len(data))
|
||||
return self.write_func(data)
|
||||
|
|
@ -1,284 +0,0 @@
|
|||
import json
|
||||
import logging
|
||||
from decimal import Decimal
|
||||
from twisted.internet import error, defer
|
||||
from twisted.internet.protocol import Protocol, ClientFactory
|
||||
from twisted.protocols.policies import TimeoutMixin
|
||||
from twisted.python import failure
|
||||
from lbrynet import utils
|
||||
from lbrynet.conf import MAX_RESPONSE_INFO_SIZE
|
||||
from lbrynet.p2p.Error import ConnectionClosedBeforeResponseError, NoResponseError
|
||||
from lbrynet.p2p.Error import DownloadCanceledError, MisbehavingPeerError
|
||||
from lbrynet.p2p.Error import RequestCanceledError
|
||||
|
||||
|
||||
log = logging.getLogger(__name__)
|
||||
|
||||
|
||||
def encode_decimal(obj):
|
||||
if isinstance(obj, Decimal):
|
||||
return float(obj)
|
||||
raise TypeError(repr(obj) + " is not JSON serializable")
|
||||
|
||||
|
||||
class ClientProtocol(Protocol, TimeoutMixin):
|
||||
#implements(IRequestSender, IRateLimited)
|
||||
######### Protocol #########
|
||||
PROTOCOL_TIMEOUT = 30
|
||||
|
||||
def connectionMade(self):
|
||||
log.debug("Connection made to %s", self.factory.peer)
|
||||
self._connection_manager = self.factory.connection_manager
|
||||
self._rate_limiter = self.factory.rate_limiter
|
||||
self.peer = self.factory.peer
|
||||
self._response_deferreds = {}
|
||||
self._response_buff = b''
|
||||
self._downloading_blob = False
|
||||
self._blob_download_request = None
|
||||
self._next_request = {}
|
||||
self.connection_closed = False
|
||||
self.connection_closing = False
|
||||
# This needs to be set for TimeoutMixin
|
||||
self.callLater = utils.call_later
|
||||
self.peer.report_up()
|
||||
|
||||
self._ask_for_request()
|
||||
|
||||
def dataReceived(self, data):
|
||||
log.debug("Received %d bytes from %s", len(data), self.peer)
|
||||
self.setTimeout(None)
|
||||
self._rate_limiter.report_dl_bytes(len(data))
|
||||
|
||||
if self._downloading_blob is True:
|
||||
self._blob_download_request.write(data)
|
||||
else:
|
||||
self._response_buff += data
|
||||
if len(self._response_buff) > MAX_RESPONSE_INFO_SIZE:
|
||||
log.warning("Response is too large from %s. Size %s",
|
||||
self.peer, len(self._response_buff))
|
||||
self.transport.loseConnection()
|
||||
response, extra_data = self._get_valid_response(self._response_buff)
|
||||
if response is not None:
|
||||
self._response_buff = b''
|
||||
self._handle_response(response)
|
||||
if self._downloading_blob is True and len(extra_data) != 0:
|
||||
self._blob_download_request.write(extra_data)
|
||||
|
||||
def timeoutConnection(self):
|
||||
log.info("Connection timed out to %s", self.peer)
|
||||
self.peer.report_down()
|
||||
self.transport.abortConnection()
|
||||
|
||||
def connectionLost(self, reason=None):
|
||||
log.debug("Connection lost to %s: %s", self.peer, reason)
|
||||
self.setTimeout(None)
|
||||
self.connection_closed = True
|
||||
if reason is None or reason.check(error.ConnectionDone):
|
||||
err = failure.Failure(ConnectionClosedBeforeResponseError())
|
||||
else:
|
||||
err = reason
|
||||
for key, d in self._response_deferreds.items():
|
||||
d.errback(err)
|
||||
self._response_deferreds.clear()
|
||||
if self._blob_download_request is not None:
|
||||
self._blob_download_request.cancel(err)
|
||||
self.factory.connection_was_made_deferred.callback(True)
|
||||
|
||||
######### IRequestSender #########
|
||||
|
||||
def add_request(self, request):
|
||||
if request.response_identifier in self._response_deferreds:
|
||||
raise ValueError("There is already a request for that response active")
|
||||
self._next_request.update(request.request_dict)
|
||||
d = defer.Deferred()
|
||||
log.debug("Adding a request for %s. Request: %s", self.peer, request.request_dict)
|
||||
self._response_deferreds[request.response_identifier] = d
|
||||
return d
|
||||
|
||||
def add_blob_request(self, blob_request):
|
||||
if self._blob_download_request is None:
|
||||
d = self.add_request(blob_request)
|
||||
self._blob_download_request = blob_request
|
||||
blob_request.finished_deferred.addCallbacks(self._downloading_finished,
|
||||
self._handle_response_error)
|
||||
return d
|
||||
else:
|
||||
return defer.fail(ValueError("There is already a blob download request active"))
|
||||
|
||||
def cancel_requests(self):
|
||||
self.connection_closing = True
|
||||
ds = []
|
||||
err = RequestCanceledError()
|
||||
for key, d in list(self._response_deferreds.items()):
|
||||
del self._response_deferreds[key]
|
||||
d.errback(err)
|
||||
ds.append(d)
|
||||
if self._blob_download_request is not None:
|
||||
ds.append(self._blob_download_request.finished_deferred)
|
||||
self._blob_download_request.cancel(err)
|
||||
self._blob_download_request = None
|
||||
self._downloading_blob = False
|
||||
return defer.DeferredList(ds)
|
||||
|
||||
######### Internal request handling #########
|
||||
|
||||
def _handle_request_error(self, err):
|
||||
log.error("An unexpected error occurred creating or sending a request to %s. %s: %s",
|
||||
self.peer, err.type, err)
|
||||
self.transport.loseConnection()
|
||||
|
||||
def _ask_for_request(self):
|
||||
if self.connection_closed is True or self.connection_closing is True:
|
||||
return
|
||||
|
||||
def send_request_or_close(do_request):
|
||||
if do_request is True:
|
||||
request_msg, self._next_request = self._next_request, {}
|
||||
self._send_request_message(request_msg)
|
||||
else:
|
||||
# The connection manager has indicated that this connection should be terminated
|
||||
log.debug("Closing the connection to %s due to having no further requests to send",
|
||||
self.peer)
|
||||
self.peer.report_success()
|
||||
self.transport.loseConnection()
|
||||
d = self._connection_manager.get_next_request(self.peer, self)
|
||||
d.addCallback(send_request_or_close)
|
||||
d.addErrback(self._handle_request_error)
|
||||
|
||||
def _send_request_message(self, request_msg):
|
||||
self.setTimeout(self.PROTOCOL_TIMEOUT)
|
||||
# TODO: compare this message to the last one. If they're the same,
|
||||
# TODO: incrementally delay this message.
|
||||
m = json.dumps(request_msg, default=encode_decimal).encode()
|
||||
self.transport.write(m)
|
||||
|
||||
def _get_valid_response(self, response_msg):
|
||||
extra_data = None
|
||||
response = None
|
||||
curr_pos = 0
|
||||
while 1:
|
||||
next_close_paren = response_msg.find(b'}', curr_pos)
|
||||
if next_close_paren != -1:
|
||||
curr_pos = next_close_paren + 1
|
||||
try:
|
||||
response = json.loads(response_msg[:curr_pos])
|
||||
except ValueError:
|
||||
pass
|
||||
else:
|
||||
extra_data = response_msg[curr_pos:]
|
||||
break
|
||||
else:
|
||||
break
|
||||
return response, extra_data
|
||||
|
||||
def _handle_response_error(self, err):
|
||||
# If an error gets to this point, log it and kill the connection.
|
||||
if err.check(DownloadCanceledError, RequestCanceledError, error.ConnectionAborted,
|
||||
ConnectionClosedBeforeResponseError):
|
||||
# TODO: (wish-list) it seems silly to close the connection over this, and it shouldn't
|
||||
# TODO: always be this way. it's done this way now because the client has no other way
|
||||
# TODO: of telling the server it wants the download to stop. It would be great if the
|
||||
# TODO: protocol had such a mechanism.
|
||||
log.info("Closing the connection to %s because the download of blob %s was canceled",
|
||||
self.peer, self._blob_download_request.blob)
|
||||
result = None
|
||||
elif err.check(MisbehavingPeerError):
|
||||
log.warning("The connection to %s is closing due to: %s", self.peer, err)
|
||||
result = err
|
||||
else:
|
||||
log.error("The connection to %s is closing due to an unexpected error: %s",
|
||||
self.peer, err)
|
||||
result = err
|
||||
self._blob_download_request = None
|
||||
self._downloading_blob = False
|
||||
self.transport.loseConnection()
|
||||
return result
|
||||
|
||||
def _handle_response(self, response):
|
||||
ds = []
|
||||
log.debug(
|
||||
"Handling a response from %s. Expected responses: %s. Actual responses: %s",
|
||||
self.peer, self._response_deferreds.keys(), response.keys())
|
||||
for key, val in response.items():
|
||||
if key in self._response_deferreds:
|
||||
d = self._response_deferreds.pop(key)
|
||||
d.callback({key: val})
|
||||
ds.append(d)
|
||||
for k, d in self._response_deferreds.items():
|
||||
del self._response_deferreds[k]
|
||||
d.errback(failure.Failure(NoResponseError()))
|
||||
ds.append(d)
|
||||
|
||||
if self._blob_download_request is not None:
|
||||
self._downloading_blob = True
|
||||
d = self._blob_download_request.finished_deferred
|
||||
d.addErrback(self._handle_response_error)
|
||||
ds.append(d)
|
||||
|
||||
# TODO: are we sure we want to consume errors here
|
||||
dl = defer.DeferredList(ds, consumeErrors=True)
|
||||
|
||||
def get_next_request(results):
|
||||
failed = False
|
||||
for success, result in results:
|
||||
if success is False:
|
||||
failed = True
|
||||
if not isinstance(result.value, DownloadCanceledError):
|
||||
log.info(result.value)
|
||||
log.info("The connection to %s is closing due to an error: %s",
|
||||
self.peer, result.getTraceback())
|
||||
|
||||
self.peer.report_down()
|
||||
if failed is False:
|
||||
log.debug("Asking for another request from %s", self.peer)
|
||||
self._ask_for_request()
|
||||
else:
|
||||
log.warning("Not asking for another request from %s", self.peer)
|
||||
self.transport.loseConnection()
|
||||
|
||||
dl.addCallback(get_next_request)
|
||||
|
||||
def _downloading_finished(self, arg):
|
||||
log.debug("The blob has finished downloading from %s", self.peer)
|
||||
self._blob_download_request = None
|
||||
self._downloading_blob = False
|
||||
return arg
|
||||
|
||||
######### IRateLimited #########
|
||||
|
||||
def throttle_upload(self):
|
||||
pass
|
||||
|
||||
def unthrottle_upload(self):
|
||||
pass
|
||||
|
||||
def throttle_download(self):
|
||||
self.transport.pauseProducing()
|
||||
|
||||
def unthrottle_download(self):
|
||||
self.transport.resumeProducing()
|
||||
|
||||
|
||||
class ClientProtocolFactory(ClientFactory):
|
||||
protocol = ClientProtocol
|
||||
|
||||
def __init__(self, peer, rate_limiter, connection_manager):
|
||||
self.peer = peer
|
||||
self.rate_limiter = rate_limiter
|
||||
self.connection_manager = connection_manager
|
||||
self.p = None
|
||||
# This defer fires and returns True when connection was
|
||||
# made and completed, or fires and returns False if
|
||||
# connection failed
|
||||
self.connection_was_made_deferred = defer.Deferred()
|
||||
|
||||
def clientConnectionFailed(self, connector, reason):
|
||||
log.debug("Connection failed to %s: %s", self.peer, reason)
|
||||
self.peer.report_down()
|
||||
self.connection_was_made_deferred.callback(False)
|
||||
|
||||
def buildProtocol(self, addr):
|
||||
p = self.protocol()
|
||||
p.factory = self
|
||||
self.p = p
|
||||
return p
|
||||
|
|
@ -1,27 +0,0 @@
|
|||
from lbrynet.blob.blob_file import MAX_BLOB_SIZE
|
||||
|
||||
|
||||
class ClientRequest:
|
||||
def __init__(self, request_dict, response_identifier=None):
|
||||
self.request_dict = request_dict
|
||||
self.response_identifier = response_identifier
|
||||
|
||||
|
||||
class ClientPaidRequest(ClientRequest):
|
||||
def __init__(self, request_dict, response_identifier, max_pay_units):
|
||||
super().__init__(request_dict, response_identifier)
|
||||
self.max_pay_units = max_pay_units
|
||||
|
||||
|
||||
class ClientBlobRequest(ClientPaidRequest):
|
||||
def __init__(self, request_dict, response_identifier, write_func, finished_deferred,
|
||||
cancel_func, blob):
|
||||
if blob.length is None:
|
||||
max_pay_units = MAX_BLOB_SIZE
|
||||
else:
|
||||
max_pay_units = blob.length
|
||||
super().__init__(request_dict, response_identifier, max_pay_units)
|
||||
self.write = write_func
|
||||
self.finished_deferred = finished_deferred
|
||||
self.cancel = cancel_func
|
||||
self.blob = blob
|
||||
|
|
@ -1,145 +0,0 @@
|
|||
import logging
|
||||
from lbrynet.conf import Config
|
||||
from lbrynet.p2p.BlobInfo import BlobInfo
|
||||
from lbrynet.p2p.client.BlobRequester import BlobRequester
|
||||
from lbrynet.p2p.client.ConnectionManager import ConnectionManager
|
||||
from lbrynet.p2p.client.DownloadManager import DownloadManager
|
||||
from lbrynet.p2p.Error import InvalidBlobHashError, DownloadSDTimeout
|
||||
from lbrynet.blob.blob_file import is_valid_blobhash
|
||||
from lbrynet.utils import safe_start_looping_call, safe_stop_looping_call
|
||||
from twisted.python.failure import Failure
|
||||
from twisted.internet import defer
|
||||
from twisted.internet.task import LoopingCall
|
||||
|
||||
log = logging.getLogger(__name__)
|
||||
|
||||
|
||||
class SingleBlobMetadataHandler:
|
||||
#implements(interfaces.IMetadataHandler)
|
||||
|
||||
def __init__(self, blob_hash, download_manager):
|
||||
self.blob_hash = blob_hash
|
||||
self.download_manager = download_manager
|
||||
|
||||
######## IMetadataHandler #########
|
||||
|
||||
def get_initial_blobs(self):
|
||||
log.debug("Returning the blob info")
|
||||
return defer.succeed([BlobInfo(self.blob_hash, 0, None)])
|
||||
|
||||
def final_blob_num(self):
|
||||
return 0
|
||||
|
||||
|
||||
class SingleProgressManager:
|
||||
def __init__(self, download_manager, finished_callback, timeout_callback, timeout):
|
||||
self.finished_callback = finished_callback
|
||||
self.timeout_callback = timeout_callback
|
||||
self.download_manager = download_manager
|
||||
|
||||
self.timeout = timeout
|
||||
self.timeout_counter = 0
|
||||
self.checker = LoopingCall(self._check_if_finished)
|
||||
|
||||
def start(self):
|
||||
safe_start_looping_call(self.checker, 1)
|
||||
return defer.succeed(True)
|
||||
|
||||
def stop(self):
|
||||
safe_stop_looping_call(self.checker)
|
||||
return defer.succeed(True)
|
||||
|
||||
def _check_if_finished(self):
|
||||
if self.stream_position() == 1:
|
||||
blob_downloaded = self.download_manager.blobs[0]
|
||||
log.debug("The blob %s has been downloaded. Calling the finished callback",
|
||||
str(blob_downloaded))
|
||||
safe_stop_looping_call(self.checker)
|
||||
self.finished_callback(blob_downloaded)
|
||||
elif self.timeout is not None:
|
||||
self.timeout_counter += 1
|
||||
if self.timeout_counter >= self.timeout:
|
||||
safe_stop_looping_call(self.checker)
|
||||
self.timeout_callback()
|
||||
|
||||
def stream_position(self):
|
||||
blobs = self.download_manager.blobs
|
||||
if blobs and blobs[0].get_is_verified():
|
||||
return 1
|
||||
return 0
|
||||
|
||||
def needed_blobs(self):
|
||||
blobs = self.download_manager.blobs
|
||||
assert len(blobs) == 1
|
||||
return [b for b in blobs.values() if not b.get_is_verified()]
|
||||
|
||||
|
||||
class DummyBlobHandler:
|
||||
def __init__(self):
|
||||
pass
|
||||
|
||||
def handle_blob(self, blob, blob_info):
|
||||
pass
|
||||
|
||||
|
||||
class StandaloneBlobDownloader:
|
||||
def __init__(self, conf: Config, blob_hash, blob_manager, peer_finder,
|
||||
rate_limiter, payment_rate_manager, wallet,
|
||||
timeout=None):
|
||||
self.conf = conf
|
||||
self.blob_hash = blob_hash
|
||||
self.blob_manager = blob_manager
|
||||
self.peer_finder = peer_finder
|
||||
self.rate_limiter = rate_limiter
|
||||
self.payment_rate_manager = payment_rate_manager
|
||||
self.wallet = wallet
|
||||
self.timeout = timeout
|
||||
self.download_manager = None
|
||||
self.finished_deferred = None
|
||||
|
||||
def download(self):
|
||||
if not is_valid_blobhash(self.blob_hash):
|
||||
return defer.fail(Failure(InvalidBlobHashError(self.blob_hash)))
|
||||
|
||||
def cancel_download(d):
|
||||
self.stop()
|
||||
|
||||
self.finished_deferred = defer.Deferred(canceller=cancel_download)
|
||||
self.download_manager = DownloadManager(self.blob_manager)
|
||||
self.download_manager.blob_requester = BlobRequester(self.blob_manager, self.peer_finder,
|
||||
self.payment_rate_manager, self.wallet,
|
||||
self.download_manager)
|
||||
self.download_manager.blob_info_finder = SingleBlobMetadataHandler(self.blob_hash,
|
||||
self.download_manager)
|
||||
self.download_manager.progress_manager = SingleProgressManager(self.download_manager,
|
||||
self._blob_downloaded,
|
||||
self._download_timedout,
|
||||
self.timeout)
|
||||
self.download_manager.blob_handler = DummyBlobHandler()
|
||||
self.download_manager.wallet_info_exchanger = self.wallet.get_info_exchanger()
|
||||
self.download_manager.connection_manager = ConnectionManager(
|
||||
self, self.rate_limiter,
|
||||
[self.download_manager.blob_requester],
|
||||
[self.download_manager.wallet_info_exchanger]
|
||||
)
|
||||
d = self.download_manager.start_downloading()
|
||||
d.addCallback(lambda _: self.finished_deferred)
|
||||
return d
|
||||
|
||||
def stop(self):
|
||||
return self.download_manager.stop_downloading()
|
||||
|
||||
def _blob_downloaded(self, blob):
|
||||
self.stop()
|
||||
if not self.finished_deferred.called:
|
||||
self.finished_deferred.callback(blob)
|
||||
|
||||
def _download_timedout(self):
|
||||
self.stop()
|
||||
if not self.finished_deferred.called:
|
||||
self.finished_deferred.errback(DownloadSDTimeout(self.blob_hash))
|
||||
|
||||
def insufficient_funds(self, err):
|
||||
self.stop()
|
||||
if not self.finished_deferred.called:
|
||||
self.finished_deferred.errback(err)
|
||||
|
|
@ -1,49 +0,0 @@
|
|||
import logging
|
||||
|
||||
|
||||
log = logging.getLogger(__name__)
|
||||
|
||||
|
||||
class BlobAvailabilityHandlerFactory:
|
||||
# implements(IQueryHandlerFactory)
|
||||
|
||||
def __init__(self, blob_manager):
|
||||
self.blob_manager = blob_manager
|
||||
|
||||
######### IQueryHandlerFactory #########
|
||||
|
||||
def build_query_handler(self):
|
||||
q_h = BlobAvailabilityHandler(self.blob_manager)
|
||||
return q_h
|
||||
|
||||
def get_primary_query_identifier(self):
|
||||
return 'requested_blobs'
|
||||
|
||||
def get_description(self):
|
||||
return "Blob Availability - blobs that are available to be uploaded"
|
||||
|
||||
|
||||
class BlobAvailabilityHandler:
|
||||
#implements(IQueryHandler)
|
||||
|
||||
def __init__(self, blob_manager):
|
||||
self.blob_manager = blob_manager
|
||||
self.query_identifiers = ['requested_blobs']
|
||||
|
||||
######### IQueryHandler #########
|
||||
|
||||
def register_with_request_handler(self, request_handler, peer):
|
||||
request_handler.register_query_handler(self, self.query_identifiers)
|
||||
|
||||
def handle_queries(self, queries):
|
||||
if self.query_identifiers[0] in queries:
|
||||
log.info("Received the client's list of requested blobs")
|
||||
available_blobs = self._get_available_blobs(queries[self.query_identifiers[0]])
|
||||
log.debug("available blobs: %s", str(available_blobs))
|
||||
return {'available_blobs': available_blobs}
|
||||
return {}
|
||||
|
||||
######### internal #########
|
||||
|
||||
def _get_available_blobs(self, requested_blobs):
|
||||
return self.blob_manager.completed_blobs(requested_blobs)
|
||||
|
|
@ -1,221 +0,0 @@
|
|||
import logging
|
||||
|
||||
from twisted.internet import defer
|
||||
from twisted.protocols.basic import FileSender
|
||||
from twisted.python.failure import Failure
|
||||
|
||||
from lbrynet.extras.daemon import analytics
|
||||
from lbrynet.p2p.Offer import Offer
|
||||
|
||||
log = logging.getLogger(__name__)
|
||||
|
||||
|
||||
class BlobRequestHandlerFactory:
|
||||
#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:
|
||||
#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 = {}
|
||||
log.debug("Handle query: %s", str(queries))
|
||||
|
||||
if self.AVAILABILITY_QUERY in queries:
|
||||
self._blobs_requested = queries[self.AVAILABILITY_QUERY]
|
||||
self._reply_to_availability(response, 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")
|
||||
self._handle_payment_rate_query(offer, response)
|
||||
if self.BLOB_QUERY in queries:
|
||||
incoming = queries[self.BLOB_QUERY]
|
||||
self._reply_to_send_request(response, 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):
|
||||
available_blobs = self._get_available_blobs(blobs)
|
||||
log.debug("available blobs: %s", str(available_blobs))
|
||||
request.update({'available_blobs': available_blobs})
|
||||
return request
|
||||
|
||||
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):
|
||||
return self.blob_manager.completed_blobs(requested_blobs)
|
||||
|
||||
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()
|
||||
|
|
@ -1,92 +0,0 @@
|
|||
import logging
|
||||
from twisted.internet import error
|
||||
from twisted.internet.protocol import Protocol, ServerFactory
|
||||
from twisted.python import failure
|
||||
from lbrynet.p2p.server.ServerRequestHandler import ServerRequestHandler
|
||||
|
||||
|
||||
log = logging.getLogger(__name__)
|
||||
|
||||
|
||||
class ServerProtocol(Protocol):
|
||||
"""ServerProtocol needs to:
|
||||
|
||||
1) Receive requests from its transport
|
||||
2) Pass those requests on to its request handler
|
||||
3) Tell the request handler to pause/resume producing
|
||||
4) Tell its transport to pause/resume producing
|
||||
5) Hang up when the request handler is done producing
|
||||
6) Tell the request handler to stop producing if the connection is lost
|
||||
7) Upon creation, register with the rate limiter
|
||||
8) Upon connection loss, unregister with the rate limiter
|
||||
9) Report all uploaded and downloaded bytes to the rate limiter
|
||||
10) Pause/resume production when told by the rate limiter
|
||||
"""
|
||||
|
||||
#implements(interfaces.IConsumer)
|
||||
|
||||
#Protocol stuff
|
||||
|
||||
def connectionMade(self):
|
||||
log.debug("Got a connection")
|
||||
peer_info = self.transport.getPeer()
|
||||
self.peer = self.factory.peer_manager.get_peer(peer_info.host, peer_info.port)
|
||||
self.request_handler = ServerRequestHandler(self)
|
||||
for query_handler_factory in self.factory.query_handler_factories.values():
|
||||
query_handler = query_handler_factory.build_query_handler()
|
||||
query_handler.register_with_request_handler(self.request_handler, self.peer)
|
||||
log.debug("Setting the request handler")
|
||||
self.factory.rate_limiter.register_protocol(self)
|
||||
|
||||
def connectionLost(self, reason=failure.Failure(error.ConnectionDone())):
|
||||
if self.request_handler is not None:
|
||||
self.request_handler.stopProducing()
|
||||
self.factory.rate_limiter.unregister_protocol(self)
|
||||
if not reason.check(error.ConnectionDone):
|
||||
log.warning("Closing a connection. Reason: %s", reason.getErrorMessage())
|
||||
|
||||
def dataReceived(self, data):
|
||||
log.debug("Receiving %s bytes of data from the transport", str(len(data)))
|
||||
self.factory.rate_limiter.report_dl_bytes(len(data))
|
||||
if self.request_handler is not None:
|
||||
self.request_handler.data_received(data)
|
||||
|
||||
#IConsumer stuff
|
||||
|
||||
def registerProducer(self, producer, streaming):
|
||||
log.debug("Registering the producer")
|
||||
assert streaming is True
|
||||
|
||||
def unregisterProducer(self):
|
||||
self.request_handler = None
|
||||
self.transport.loseConnection()
|
||||
|
||||
def write(self, data):
|
||||
log.trace("Writing %s bytes of data to the transport", len(data))
|
||||
self.transport.write(data)
|
||||
self.factory.rate_limiter.report_ul_bytes(len(data))
|
||||
|
||||
#Rate limiter stuff
|
||||
|
||||
def throttle_upload(self):
|
||||
if self.request_handler is not None:
|
||||
self.request_handler.pauseProducing()
|
||||
|
||||
def unthrottle_upload(self):
|
||||
if self.request_handler is not None:
|
||||
self.request_handler.resumeProducing()
|
||||
|
||||
def throttle_download(self):
|
||||
self.transport.pauseProducing()
|
||||
|
||||
def unthrottle_download(self):
|
||||
self.transport.resumeProducing()
|
||||
|
||||
|
||||
class ServerProtocolFactory(ServerFactory):
|
||||
protocol = ServerProtocol
|
||||
|
||||
def __init__(self, rate_limiter, query_handler_factories, peer_manager):
|
||||
self.rate_limiter = rate_limiter
|
||||
self.query_handler_factories = query_handler_factories
|
||||
self.peer_manager = peer_manager
|
||||
|
|
@ -1,184 +0,0 @@
|
|||
import json
|
||||
import logging
|
||||
from twisted.internet import defer
|
||||
|
||||
|
||||
log = logging.getLogger(__name__)
|
||||
|
||||
|
||||
class ServerRequestHandler:
|
||||
"""This class handles requests from clients. It can upload blobs and
|
||||
return request for information about more blobs that are
|
||||
associated with streams.
|
||||
"""
|
||||
#implements(interfaces.IPushProducer, interfaces.IConsumer, IRequestHandler)
|
||||
|
||||
def __init__(self, consumer):
|
||||
self.consumer = consumer
|
||||
self.production_paused = False
|
||||
self.request_buff = b''
|
||||
self.response_buff = b''
|
||||
self.producer = None
|
||||
self.request_received = False
|
||||
self.CHUNK_SIZE = 2**14
|
||||
self.query_handlers = {} # {IQueryHandler: [query_identifiers]}
|
||||
self.blob_sender = None
|
||||
self.consumer.registerProducer(self, True)
|
||||
|
||||
#IPushProducer stuff
|
||||
|
||||
def pauseProducing(self):
|
||||
self.production_paused = True
|
||||
|
||||
def stopProducing(self):
|
||||
if self.producer is not None:
|
||||
self.producer.stopProducing()
|
||||
self.producer = None
|
||||
self.production_paused = True
|
||||
self.consumer.unregisterProducer()
|
||||
|
||||
def resumeProducing(self):
|
||||
|
||||
from twisted.internet import reactor
|
||||
|
||||
self.production_paused = False
|
||||
self._produce_more()
|
||||
if self.producer is not None:
|
||||
reactor.callLater(0, self.producer.resumeProducing)
|
||||
|
||||
def _produce_more(self):
|
||||
|
||||
from twisted.internet import reactor
|
||||
|
||||
if self.production_paused:
|
||||
return
|
||||
chunk = self.response_buff[:self.CHUNK_SIZE]
|
||||
self.response_buff = self.response_buff[self.CHUNK_SIZE:]
|
||||
if chunk == b'':
|
||||
return
|
||||
log.trace("writing %s bytes to the client", len(chunk))
|
||||
self.consumer.write(chunk)
|
||||
reactor.callLater(0, self._produce_more)
|
||||
|
||||
#IConsumer stuff
|
||||
|
||||
def registerProducer(self, producer, streaming):
|
||||
self.producer = producer
|
||||
assert streaming is False
|
||||
producer.resumeProducing()
|
||||
|
||||
def unregisterProducer(self):
|
||||
self.producer = None
|
||||
|
||||
def write(self, data):
|
||||
|
||||
from twisted.internet import reactor
|
||||
|
||||
self.response_buff = self.response_buff + data
|
||||
self._produce_more()
|
||||
|
||||
def get_more_data():
|
||||
if self.producer is not None:
|
||||
log.trace("Requesting more data from the producer")
|
||||
self.producer.resumeProducing()
|
||||
|
||||
reactor.callLater(0, get_more_data)
|
||||
|
||||
#From Protocol
|
||||
|
||||
def data_received(self, data):
|
||||
log.debug("Received data")
|
||||
log.debug("%s", str(data))
|
||||
if self.request_received is False:
|
||||
return self._parse_data_and_maybe_send_blob(data)
|
||||
else:
|
||||
log.warning(
|
||||
"The client sent data when we were uploading a file. This should not happen")
|
||||
|
||||
def _parse_data_and_maybe_send_blob(self, data):
|
||||
self.request_buff = self.request_buff + data
|
||||
msg = self.try_to_parse_request(self.request_buff)
|
||||
if msg:
|
||||
self.request_buff = b''
|
||||
self._process_msg(msg)
|
||||
else:
|
||||
log.debug("Request buff not a valid json message")
|
||||
log.debug("Request buff: %s", self.request_buff)
|
||||
|
||||
def _process_msg(self, msg):
|
||||
d = self.handle_request(msg)
|
||||
if self.blob_sender:
|
||||
d.addCallback(lambda _: self.blob_sender.send_blob_if_requested(self))
|
||||
d.addCallbacks(lambda _: self.finished_response(), self.request_failure_handler)
|
||||
|
||||
|
||||
######### IRequestHandler #########
|
||||
|
||||
def register_query_handler(self, query_handler, query_identifiers):
|
||||
self.query_handlers[query_handler] = query_identifiers
|
||||
|
||||
def register_blob_sender(self, blob_sender):
|
||||
self.blob_sender = blob_sender
|
||||
|
||||
#response handling
|
||||
|
||||
def request_failure_handler(self, err):
|
||||
log.warning("An error occurred handling a request. Error: %s", err.getErrorMessage())
|
||||
self.stopProducing()
|
||||
return err
|
||||
|
||||
def finished_response(self):
|
||||
self.request_received = False
|
||||
self._produce_more()
|
||||
|
||||
def send_response(self, msg):
|
||||
m = json.dumps(msg).encode()
|
||||
log.debug("Sending a response of length %s", str(len(m)))
|
||||
log.debug("Response: %s", str(m))
|
||||
self.response_buff = self.response_buff + m
|
||||
self._produce_more()
|
||||
return True
|
||||
|
||||
def handle_request(self, msg):
|
||||
log.debug("Handling a request")
|
||||
log.debug(str(msg))
|
||||
|
||||
def create_response_message(results):
|
||||
response = {}
|
||||
for success, result in results:
|
||||
if success is True:
|
||||
response.update(result)
|
||||
else:
|
||||
# result is a Failure
|
||||
return result
|
||||
log.debug("Finished making the response message. Response: %s", str(response))
|
||||
return response
|
||||
|
||||
def log_errors(err):
|
||||
log.warning(
|
||||
"An error occurred handling a client request. Error message: %s",
|
||||
err.getErrorMessage())
|
||||
return err
|
||||
|
||||
def send_response(response):
|
||||
self.send_response(response)
|
||||
return True
|
||||
|
||||
ds = []
|
||||
for query_handler, query_identifiers in self.query_handlers.items():
|
||||
queries = {q_i: msg[q_i] for q_i in query_identifiers if q_i in msg}
|
||||
d = defer.maybeDeferred(query_handler.handle_queries(queries))
|
||||
d.addErrback(log_errors)
|
||||
ds.append(d)
|
||||
|
||||
dl = defer.DeferredList(ds)
|
||||
dl.addCallback(create_response_message)
|
||||
dl.addCallback(send_response)
|
||||
return dl
|
||||
|
||||
def try_to_parse_request(self, request_buff):
|
||||
try:
|
||||
msg = json.loads(request_buff)
|
||||
return msg
|
||||
except ValueError:
|
||||
return None
|
||||
|
|
@ -60,7 +60,7 @@ class CommandTestCase(IntegrationTestCase):
|
|||
|
||||
twisted.internet.reactor = sys.modules['twisted.internet.reactor'] = AsyncioSelectorReactor()
|
||||
|
||||
logging.getLogger('lbrynet.p2p').setLevel(self.VERBOSITY)
|
||||
logging.getLogger('lbrynet.blob_exchange').setLevel(self.VERBOSITY)
|
||||
logging.getLogger('lbrynet.daemon').setLevel(self.VERBOSITY)
|
||||
|
||||
conf = Config()
|
||||
|
|
|
|||
71
tests/unit/blob_exchange/test_transfer_blob.py
Normal file
71
tests/unit/blob_exchange/test_transfer_blob.py
Normal file
|
|
@ -0,0 +1,71 @@
|
|||
import asyncio
|
||||
import tempfile
|
||||
import shutil
|
||||
import os
|
||||
from torba.testcase import AsyncioTestCase
|
||||
from lbrynet.extras.daemon.storage import SQLiteStorage
|
||||
from lbrynet.blob.blob_manager import BlobFileManager
|
||||
from lbrynet.blob_exchange.server import BlobServer
|
||||
from lbrynet.blob_exchange.client import BlobExchangeClientProtocol, request_blob
|
||||
from lbrynet.dht.peer import KademliaPeer, PeerManager
|
||||
|
||||
# import logging
|
||||
# logging.getLogger("lbrynet").setLevel(logging.DEBUG)
|
||||
|
||||
|
||||
class BlobExchangeTestBase(AsyncioTestCase):
|
||||
async def asyncSetUp(self):
|
||||
self.loop = asyncio.get_event_loop()
|
||||
|
||||
self.client_dir = tempfile.mkdtemp()
|
||||
self.server_dir = tempfile.mkdtemp()
|
||||
self.addCleanup(shutil.rmtree, self.client_dir)
|
||||
self.addCleanup(shutil.rmtree, self.server_dir)
|
||||
|
||||
self.server_storage = SQLiteStorage(os.path.join(self.server_dir, "lbrynet.sqlite"))
|
||||
self.server_blob_manager = BlobFileManager(self.loop, self.server_dir, self.server_storage)
|
||||
self.server = BlobServer(self.loop, self.server_blob_manager, 'bQEaw42GXsgCAGio1nxFncJSyRmnztSCjP')
|
||||
|
||||
self.client_storage = SQLiteStorage(os.path.join(self.client_dir, "lbrynet.sqlite"))
|
||||
self.client_blob_manager = BlobFileManager(self.loop, self.client_dir, self.client_storage)
|
||||
self.client_peer_manager = PeerManager(self.loop)
|
||||
self.server_from_client = KademliaPeer(self.loop, "127.0.0.1", b'1' * 48, tcp_port=33333)
|
||||
|
||||
await self.client_storage.open()
|
||||
await self.server_storage.open()
|
||||
await self.client_blob_manager.setup()
|
||||
await self.server_blob_manager.setup()
|
||||
|
||||
self.server.start_server(33333, '127.0.0.1')
|
||||
await self.server.started_listening.wait()
|
||||
|
||||
|
||||
class TestBlobExchange(BlobExchangeTestBase):
|
||||
async def _test_transfer_blob(self, blob_hash: str, blob_bytes: bytes):
|
||||
# add the blob on the server
|
||||
server_blob = self.server_blob_manager.get_blob(blob_hash, len(blob_bytes))
|
||||
writer = server_blob.open_for_writing()
|
||||
writer.write(blob_bytes)
|
||||
await server_blob.finished_writing.wait()
|
||||
self.assertTrue(os.path.isfile(server_blob.file_path))
|
||||
self.assertEqual(server_blob.get_is_verified(), True)
|
||||
|
||||
client_blob = self.client_blob_manager.get_blob(blob_hash)
|
||||
protocol = BlobExchangeClientProtocol(self.loop, 2)
|
||||
|
||||
# download the blob
|
||||
downloaded = await request_blob(self.loop, client_blob, protocol, self.server_from_client.address,
|
||||
self.server_from_client.tcp_port, 2)
|
||||
await protocol.close()
|
||||
self.assertEqual(client_blob.get_is_verified(), True)
|
||||
self.assertTrue(downloaded)
|
||||
|
||||
async def test_transfer_sd_blob(self):
|
||||
sd_hash = "3e2706157a59aaa47ef52bc264fce488078b4026c0b9bab649a8f2fe1ecc5e5cad7182a2bb7722460f856831a1ac0f02"
|
||||
mock_sd_blob_bytes = b"""{"blobs": [{"blob_hash": "6f53c72de100f6f007aa1b9720632e2d049cc6049e609ad790b556dba262159f739d5a14648d5701afc84b991254206a", "blob_num": 0, "iv": "3b6110c2d8e742bff66e4314863dee7e", "length": 2097152}, {"blob_hash": "18493bc7c5164b00596153859a0faffa45765e47a6c3f12198a4f7be4658111505b7f8a15ed0162306a0672c4a9b505d", "blob_num": 1, "iv": "df973fa64e73b4ff2677d682cdc32d3e", "length": 2097152}, {"blob_num": 2, "iv": "660d2dc2645da7c7d4540a466fcb0c60", "length": 0}], "key": "6465616462656566646561646265656664656164626565666465616462656566", "stream_hash": "22423c6786584974bd6b462af47ecb03e471da0ef372fe85a4e71a78bef7560c4afb0835c689f03916105404653b7bdf", "stream_name": "746573745f66696c65", "stream_type": "lbryfile", "suggested_file_name": "746573745f66696c65"}"""
|
||||
return await self._test_transfer_blob(sd_hash, mock_sd_blob_bytes)
|
||||
|
||||
async def test_transfer_blob(self):
|
||||
blob_hash = "7f5ab2def99f0ddd008da71db3a3772135f4002b19b7605840ed1034c8955431bd7079549e65e6b2a3b9c17c773073ed"
|
||||
mock_blob_bytes = b'1' * ((2 * 2 ** 20) - 1)
|
||||
return await self._test_transfer_blob(blob_hash, mock_blob_bytes)
|
||||
Loading…
Reference in a new issue