85 lines
2.7 KiB
Python
85 lines
2.7 KiB
Python
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from __future__ import annotations
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import asyncio
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from typing import Protocol, runtime_checkable
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@runtime_checkable
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class Connection(Protocol):
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async def exec(self, cmd: str, timeout: float = 30.0) -> tuple[int, str]: ...
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async def push(self, local_path: str, remote_path: str) -> None: ...
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async def pull(self, remote_path: str, local_path: str) -> None: ...
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async def close(self) -> None: ...
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@runtime_checkable
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class Transport(Protocol):
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async def connect(self, host: str, port: int) -> Connection: ...
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class SSHConnection:
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def __init__(self, host: str, port: int):
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self.host = host
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self.port = port
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async def exec(self, cmd: str, timeout: float = 30.0) -> tuple[int, str]:
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proc = await asyncio.create_subprocess_exec(
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"ssh",
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"-p", str(self.port),
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"-o", "StrictHostKeyChecking=no",
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"-o", "ConnectTimeout=5",
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"-o", "BatchMode=yes",
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f"root@{self.host}",
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cmd,
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stdout=asyncio.subprocess.PIPE,
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stderr=asyncio.subprocess.PIPE,
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)
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try:
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stdout, stderr = await asyncio.wait_for(
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proc.communicate(), timeout=timeout
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)
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return proc.returncode, (stdout + stderr).decode()
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except asyncio.TimeoutError:
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proc.kill()
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return 1, "timeout"
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async def push(self, local_path: str, remote_path: str) -> None:
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proc = await asyncio.create_subprocess_exec(
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"scp",
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"-P", str(self.port),
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"-o", "StrictHostKeyChecking=no",
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local_path,
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f"root@{self.host}:{remote_path}",
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stdout=asyncio.subprocess.PIPE,
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stderr=asyncio.subprocess.PIPE,
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)
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_, stderr = await proc.communicate()
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if proc.returncode != 0:
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raise ConnectionError(
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f"scp push failed to {self.host}:{self.port}: {stderr.decode()}"
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)
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async def pull(self, remote_path: str, local_path: str) -> None:
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proc = await asyncio.create_subprocess_exec(
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"scp",
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"-P", str(self.port),
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"-o", "StrictHostKeyChecking=no",
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f"root@{self.host}:{remote_path}",
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local_path,
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stdout=asyncio.subprocess.PIPE,
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stderr=asyncio.subprocess.PIPE,
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)
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_, stderr = await proc.communicate()
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if proc.returncode != 0:
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raise ConnectionError(
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f"scp pull failed from {self.host}:{self.port}: {stderr.decode()}"
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)
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async def close(self) -> None:
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pass
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class SSHTransport:
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async def connect(self, host: str, port: int) -> SSHConnection:
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return SSHConnection(host, port)
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