41 lines
1.3 KiB
Python
41 lines
1.3 KiB
Python
import logging
|
|
|
|
import trio
|
|
|
|
from libp2p.io.abc import ReadWriteCloser
|
|
from libp2p.io.exceptions import IOException
|
|
|
|
logger = logging.getLogger("libp2p.io.trio")
|
|
|
|
|
|
class TrioTCPStream(ReadWriteCloser):
|
|
stream: trio.SocketStream
|
|
# NOTE: Add both read and write lock to avoid `trio.BusyResourceError`
|
|
read_lock: trio.Lock
|
|
write_lock: trio.Lock
|
|
|
|
def __init__(self, stream: trio.SocketStream) -> None:
|
|
self.stream = stream
|
|
self.read_lock = trio.Lock()
|
|
self.write_lock = trio.Lock()
|
|
|
|
async def write(self, data: bytes) -> None:
|
|
"""Raise `RawConnError` if the underlying connection breaks."""
|
|
async with self.write_lock:
|
|
try:
|
|
await self.stream.send_all(data)
|
|
except (trio.ClosedResourceError, trio.BrokenResourceError) as error:
|
|
raise IOException from error
|
|
|
|
async def read(self, n: int = None) -> bytes:
|
|
async with self.read_lock:
|
|
if n is not None and n == 0:
|
|
return b""
|
|
try:
|
|
return await self.stream.receive_some(n)
|
|
except (trio.ClosedResourceError, trio.BrokenResourceError) as error:
|
|
raise IOException from error
|
|
|
|
async def close(self) -> None:
|
|
await self.stream.aclose()
|