forked from LBRYCommunity/lbry-sdk
231 lines
9.4 KiB
Python
231 lines
9.4 KiB
Python
import os
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import asyncio
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import typing
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import logging
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import binascii
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from lbrynet.utils import generate_id
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from lbrynet.schema.mime_types import guess_media_type
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from lbrynet.stream.downloader import StreamDownloader
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from lbrynet.stream.descriptor import StreamDescriptor
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from lbrynet.stream.reflector.client import StreamReflectorClient
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from lbrynet.extras.daemon.storage import StoredStreamClaim
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if typing.TYPE_CHECKING:
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from lbrynet.schema.claim import Claim
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from lbrynet.blob.blob_manager import BlobFileManager
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from lbrynet.dht.node import Node
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log = logging.getLogger(__name__)
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class ManagedStream:
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STATUS_RUNNING = "running"
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STATUS_STOPPED = "stopped"
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STATUS_FINISHED = "finished"
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def __init__(self, loop: asyncio.BaseEventLoop, blob_manager: 'BlobFileManager', rowid: int,
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descriptor: 'StreamDescriptor', download_directory: str, file_name: typing.Optional[str],
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downloader: typing.Optional[StreamDownloader] = None,
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status: typing.Optional[str] = STATUS_STOPPED, claim: typing.Optional[StoredStreamClaim] = None,
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download_id: typing.Optional[str] = None):
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self.loop = loop
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self.blob_manager = blob_manager
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self.rowid = rowid
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self.download_directory = download_directory
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self._file_name = file_name
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self.descriptor = descriptor
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self.downloader = downloader
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self.stream_hash = descriptor.stream_hash
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self.stream_claim_info = claim
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self._status = status
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self.fully_reflected = asyncio.Event(loop=self.loop)
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self.tx = None
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self.download_id = download_id or binascii.hexlify(generate_id()).decode()
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@property
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def file_name(self) -> typing.Optional[str]:
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return self.downloader.output_file_name if self.downloader else self._file_name
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@property
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def status(self) -> str:
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return self._status
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def update_status(self, status: str):
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assert status in [self.STATUS_RUNNING, self.STATUS_STOPPED, self.STATUS_FINISHED]
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self._status = status
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@property
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def finished(self) -> bool:
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return self.status == self.STATUS_FINISHED
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@property
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def running(self) -> bool:
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return self.status == self.STATUS_RUNNING
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@property
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def claim_id(self) -> typing.Optional[str]:
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return None if not self.stream_claim_info else self.stream_claim_info.claim_id
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@property
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def txid(self) -> typing.Optional[str]:
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return None if not self.stream_claim_info else self.stream_claim_info.txid
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@property
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def nout(self) -> typing.Optional[int]:
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return None if not self.stream_claim_info else self.stream_claim_info.nout
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@property
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def outpoint(self) -> typing.Optional[str]:
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return None if not self.stream_claim_info else self.stream_claim_info.outpoint
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@property
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def claim_height(self) -> typing.Optional[int]:
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return None if not self.stream_claim_info else self.stream_claim_info.height
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@property
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def channel_claim_id(self) -> typing.Optional[str]:
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return None if not self.stream_claim_info else self.stream_claim_info.channel_claim_id
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@property
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def channel_name(self) -> typing.Optional[str]:
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return None if not self.stream_claim_info else self.stream_claim_info.channel_name
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@property
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def claim_name(self) -> typing.Optional[str]:
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return None if not self.stream_claim_info else self.stream_claim_info.claim_name
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@property
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def metadata(self) ->typing.Optional[typing.Dict]:
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return None if not self.stream_claim_info else self.stream_claim_info.claim.stream.to_dict()
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@property
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def blobs_completed(self) -> int:
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return sum([1 if self.blob_manager.get_blob(b.blob_hash).get_is_verified() else 0
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for b in self.descriptor.blobs[:-1]])
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@property
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def blobs_in_stream(self) -> int:
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return len(self.descriptor.blobs) - 1
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@property
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def sd_hash(self):
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return self.descriptor.sd_hash
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@property
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def blobs_remaining(self) -> int:
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return self.blobs_in_stream - self.blobs_completed
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@property
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def full_path(self) -> typing.Optional[str]:
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return os.path.join(self.download_directory, os.path.basename(self.file_name)) if self.file_name else None
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@property
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def output_file_exists(self):
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return os.path.isfile(self.full_path) if self.full_path else False
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def as_dict(self) -> typing.Dict:
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full_path = self.full_path if self.output_file_exists else None
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mime_type = guess_media_type(os.path.basename(self.descriptor.suggested_file_name))[0]
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if self.downloader and self.downloader.written_bytes:
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written_bytes = self.downloader.written_bytes
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elif full_path:
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written_bytes = os.stat(full_path).st_size
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else:
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written_bytes = None
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return {
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'completed': self.finished,
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'file_name': self.file_name,
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'download_directory': self.download_directory,
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'points_paid': 0.0,
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'tx': self.tx,
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'stopped': not self.running,
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'stream_hash': self.stream_hash,
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'stream_name': self.descriptor.stream_name,
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'suggested_file_name': self.descriptor.suggested_file_name,
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'sd_hash': self.descriptor.sd_hash,
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'download_path': full_path,
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'mime_type': mime_type,
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'key': self.descriptor.key,
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'total_bytes_lower_bound': self.descriptor.lower_bound_decrypted_length(),
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'total_bytes': self.descriptor.upper_bound_decrypted_length(),
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'written_bytes': written_bytes,
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'blobs_completed': self.blobs_completed,
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'blobs_in_stream': self.blobs_in_stream,
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'blobs_remaining': self.blobs_remaining,
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'status': self.status,
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'claim_id': self.claim_id,
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'txid': self.txid,
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'nout': self.nout,
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'outpoint': self.outpoint,
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'metadata': self.metadata,
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'channel_claim_id': self.channel_claim_id,
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'channel_name': self.channel_name,
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'claim_name': self.claim_name
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}
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@classmethod
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async def create(cls, loop: asyncio.BaseEventLoop, blob_manager: 'BlobFileManager',
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file_path: str, key: typing.Optional[bytes] = None,
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iv_generator: typing.Optional[typing.Generator[bytes, None, None]] = None) -> 'ManagedStream':
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descriptor = await StreamDescriptor.create_stream(
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loop, blob_manager.blob_dir, file_path, key=key, iv_generator=iv_generator
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)
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sd_blob = blob_manager.get_blob(descriptor.sd_hash)
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await blob_manager.storage.store_stream(
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blob_manager.get_blob(descriptor.sd_hash), descriptor
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)
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await blob_manager.blob_completed(sd_blob)
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for blob in descriptor.blobs[:-1]:
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await blob_manager.blob_completed(blob_manager.get_blob(blob.blob_hash, blob.length))
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row_id = await blob_manager.storage.save_published_file(descriptor.stream_hash, os.path.basename(file_path),
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os.path.dirname(file_path), 0)
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return cls(loop, blob_manager, row_id, descriptor, os.path.dirname(file_path), os.path.basename(file_path),
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status=cls.STATUS_FINISHED)
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def start_download(self, node: typing.Optional['Node']):
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self.downloader.download(node)
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self.update_status(self.STATUS_RUNNING)
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def stop_download(self):
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if self.downloader:
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self.downloader.stop()
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self.downloader = None
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async def upload_to_reflector(self, host: str, port: int) -> typing.List[str]:
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sent = []
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protocol = StreamReflectorClient(self.blob_manager, self.descriptor)
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try:
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await self.loop.create_connection(lambda: protocol, host, port)
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await protocol.send_handshake()
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sent_sd, needed = await protocol.send_descriptor()
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if sent_sd:
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sent.append(self.sd_hash)
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if not sent_sd and not needed:
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if not self.fully_reflected.is_set():
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self.fully_reflected.set()
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await self.blob_manager.storage.update_reflected_stream(self.sd_hash, f"{host}:{port}")
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return []
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we_have = [blob_hash for blob_hash in needed if blob_hash in self.blob_manager.completed_blob_hashes]
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for blob_hash in we_have:
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await protocol.send_blob(blob_hash)
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sent.append(blob_hash)
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except (asyncio.TimeoutError, ValueError):
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return sent
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except ConnectionRefusedError:
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return sent
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finally:
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if protocol.transport:
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protocol.transport.close()
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if not self.fully_reflected.is_set():
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self.fully_reflected.set()
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await self.blob_manager.storage.update_reflected_stream(self.sd_hash, f"{host}:{port}")
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return sent
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def set_claim(self, claim_info: typing.Dict, claim: 'Claim'):
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self.stream_claim_info = StoredStreamClaim(
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self.stream_hash, f"{claim_info['txid']}:{claim_info['nout']}", claim_info['claim_id'],
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claim_info['name'], claim_info['amount'], claim_info['height'],
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binascii.hexlify(claim.to_bytes()).decode(), claim.signing_channel_id, claim_info['address'],
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claim_info['claim_sequence'], claim_info.get('channel_name')
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)
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