hyperboria/nexus/pylon/drivers/direct.py

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from typing import Dict
import aiohttp.client_exceptions
from aiohttp_socks import ProxyError
from nexus.pylon.drivers.base import BaseDriver
from nexus.pylon.exceptions import (
BadResponseError,
NotFoundError,
)
from nexus.pylon.prepared_request import PreparedRequest
from nexus.pylon.proto.file_pb2 import Chunk as ChunkPb
from nexus.pylon.proto.file_pb2 import FileResponse as FileResponsePb
from python_socks import ProxyTimeoutError
from tenacity import (
retry,
retry_if_exception_type,
stop_after_attempt,
wait_random,
)
class DirectDriver(BaseDriver):
allowed_content_type = None
@retry(
reraise=True,
wait=wait_random(min=1, max=2),
stop=stop_after_attempt(7),
retry=retry_if_exception_type((ProxyError, aiohttp.client_exceptions.ClientPayloadError, ProxyTimeoutError)),
)
async def execute_prepared_file_request(self, prepared_file_request: PreparedRequest, params: Dict):
async with self.get_session() as session:
async with prepared_file_request.execute_with(session=session) as resp:
if resp.status == 404:
raise NotFoundError(url=prepared_file_request.url)
elif (
resp.status != 200
or (
self.allowed_content_type
and resp.headers.get('Content-Type', '').lower() not in self.allowed_content_type
)
):
raise BadResponseError(
request_headers=prepared_file_request.headers,
url=prepared_file_request.url,
status=resp.status,
headers=str(resp.headers),
)
file_validator = self.validator(params)
yield FileResponsePb(status=FileResponsePb.Status.BEGIN_TRANSMISSION, source=prepared_file_request.url)
async for content, _ in resp.content.iter_chunks():
file_validator.update(content)
yield FileResponsePb(chunk=ChunkPb(content=content), source=prepared_file_request.url)
file_validator.validate()