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fix(terminal): add SSH preflight check (#1486)

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Teknium 2026-03-15 21:09:07 -07:00 • committed by GitHub
parent 3f0f4a04a9
commit ceb970c559
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10
tools/environments/ssh.py
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@ -1,6 +1,7 @@
"""SSH remote execution environment with ControlMaster connection persistence."""
import logging
import shutil
import subprocess
import tempfile
import threading
@ -13,6 +14,14 @@ from tools.interrupt import is_interrupted
logger = logging.getLogger(__name__)
def _ensure_ssh_available() -> None:
"""Fail fast with a clear error when the SSH client is unavailable."""
if not shutil.which("ssh"):
raise RuntimeError(
"SSH is not installed or not in PATH. Install OpenSSH client: apt install openssh-client"
)
class SSHEnvironment(BaseEnvironment):
"""Run commands on a remote machine over SSH.
@ -35,6 +44,7 @@ class SSHEnvironment(BaseEnvironment):
self.control_dir = Path(tempfile.gettempdir()) / "hermes-ssh"
self.control_dir.mkdir(parents=True, exist_ok=True)
self.control_socket = self.control_dir / f"{user}@{host}:{port}.sock"
_ensure_ssh_available()
self._establish_connection()
def _build_ssh_command(self, extra_args: list = None) -> list: