feat: add muxplex doctor subcommand — dependency + config diagnostics

Checks Python version, tmux, ttyd, muxplex version, settings file,
auth status (PAM/password/auto-generate), active tmux sessions,
platform, and service installation status. Platform-specific install
hints for missing dependencies. Non-fatal — always completes.
This commit is contained in:
Brian Krabach
2026-03-30 06:47:36 -07:00
parent d20f85a23e
commit cf1182b100
2 changed files with 236 additions and 1 deletions
+140 -1
View File
@@ -2,13 +2,20 @@
import argparse
import os
import platform
import shutil
import subprocess
import sys
from pathlib import Path
import secrets as _secrets
from muxplex.auth import get_secret_path, load_password, pam_available
from muxplex.auth import (
get_password_path,
get_secret_path,
load_password,
pam_available,
)
# Module-level path constants (overridable in tests via monkeypatch)
_system_service_path = Path("/etc/systemd/system/muxplex.service")
@@ -57,6 +64,134 @@ def serve(
uvicorn.run(app, host=host, port=port, log_level="warning")
def doctor() -> None:
"""Run diagnostic checks and report system status."""
ok_mark = "\033[32m✓\033[0m" # green check
fail_mark = "\033[31m✗\033[0m" # red x
warn_mark = "\033[33m!\033[0m" # yellow warning
print("\nmuxplex doctor\n")
# Python version
py_version = platform.python_version()
py_ok = tuple(int(x) for x in py_version.split(".")[:2]) >= (3, 11)
print(
f" {ok_mark if py_ok else fail_mark} Python {py_version}"
+ ("" if py_ok else " (3.11+ required)")
)
# tmux
tmux_path = shutil.which("tmux")
if tmux_path:
try:
result = subprocess.run(
["tmux", "-V"], capture_output=True, text=True, timeout=5
)
tmux_version = result.stdout.strip()
print(f" {ok_mark} {tmux_version}")
except Exception:
print(f" {ok_mark} tmux (version unknown)")
else:
print(f" {fail_mark} tmux — not found")
if sys.platform == "darwin":
print(" Install: brew install tmux")
else:
print(" Install: sudo apt install tmux")
# ttyd
ttyd_path = shutil.which("ttyd")
if ttyd_path:
try:
result = subprocess.run(
["ttyd", "--version"], capture_output=True, text=True, timeout=5
)
ttyd_version = result.stdout.strip() or result.stderr.strip()
print(f" {ok_mark} ttyd {ttyd_version}")
except Exception:
print(f" {ok_mark} ttyd (version unknown)")
else:
print(f" {fail_mark} ttyd — not found")
if sys.platform == "darwin":
print(" Install: brew install ttyd")
else:
print(" Install: sudo apt install ttyd")
# muxplex version
try:
from importlib.metadata import version as pkg_version # noqa: PLC0415
muxplex_version = pkg_version("muxplex")
except Exception:
muxplex_version = "dev"
print(f" {ok_mark} muxplex {muxplex_version}")
# Settings file
from muxplex.settings import SETTINGS_PATH # noqa: PLC0415
if SETTINGS_PATH.exists():
print(f" {ok_mark} Settings: {SETTINGS_PATH}")
else:
print(
f" {warn_mark} Settings: {SETTINGS_PATH} (not yet created — will use defaults)"
)
# Auth status
pw_path = get_password_path()
if pam_available():
import pwd # noqa: PLC0415
username = pwd.getpwuid(os.getuid()).pw_name
print(f" {ok_mark} Auth: PAM available (user: {username})")
elif pw_path.exists():
print(f" {ok_mark} Auth: password file ({pw_path})")
elif os.environ.get("MUXPLEX_PASSWORD"):
print(f" {ok_mark} Auth: password (env var)")
else:
print(f" {warn_mark} Auth: no PAM, no password — will auto-generate on serve")
# tmux sessions (if tmux is available)
if tmux_path:
try:
result = subprocess.run(
["tmux", "list-sessions", "-F", "#{session_name}"],
capture_output=True,
text=True,
timeout=5,
)
if result.returncode == 0:
sessions = [s for s in result.stdout.strip().split("\n") if s]
print(f" {ok_mark} tmux sessions: {len(sessions)} active")
else:
print(f" {warn_mark} tmux server not running (no sessions)")
except Exception:
print(f" {warn_mark} tmux server not running")
# Platform + service status
print(f" {ok_mark} Platform: {sys.platform} ({platform.machine()})")
if sys.platform == "darwin":
plist = Path.home() / "Library" / "LaunchAgents" / "com.muxplex.plist"
if plist.exists():
print(f" {ok_mark} Service: launchd agent installed ({plist})")
else:
print(
f" {warn_mark} Service: not installed (run: muxplex install-service)"
)
else:
systemd_user = Path.home() / ".config" / "systemd" / "user" / "muxplex.service"
if systemd_user.exists():
print(f" {ok_mark} Service: systemd user unit installed ({systemd_user})")
elif _system_service_path.exists():
print(
f" {ok_mark} Service: systemd system unit installed ({_system_service_path})"
)
else:
print(
f" {warn_mark} Service: not installed (run: muxplex install-service)"
)
print() # trailing newline
def _check_dependencies() -> None:
"""Verify required external programs are installed.
@@ -206,6 +341,8 @@ def main() -> None:
"reset-secret", help="Regenerate signing secret (invalidates sessions)"
)
sub.add_parser("doctor", help="Check dependencies and system status")
args = parser.parse_args()
if args.command == "install-service":
@@ -214,6 +351,8 @@ def main() -> None:
show_password()
elif args.command == "reset-secret":
reset_secret()
elif args.command == "doctor":
doctor()
else:
_check_dependencies()
serve(
+96
View File
@@ -1,5 +1,6 @@
"""Tests for muxplex/cli.py — CLI entry point."""
import shutil
import stat
from pathlib import Path
from unittest.mock import patch
@@ -420,3 +421,98 @@ def test_dunder_main_calls_main():
with patch("muxplex.cli.main") as mock_main:
exec(Path(spec.origin).read_text()) # noqa: S102
mock_main.assert_called_once()
# ---------------------------------------------------------------------------
# doctor() tests
# ---------------------------------------------------------------------------
def test_doctor_shows_python_version(capsys):
"""doctor must show Python version."""
from muxplex.cli import doctor
doctor()
out = capsys.readouterr().out
assert "Python" in out
def test_doctor_checks_tmux(capsys, monkeypatch):
"""doctor must check for tmux."""
import subprocess
from muxplex.cli import doctor
monkeypatch.setattr(
"shutil.which", lambda name: "/usr/bin/tmux" if name == "tmux" else None
)
monkeypatch.setattr(
subprocess,
"run",
lambda *a, **kw: type(
"R", (), {"returncode": 0, "stdout": "tmux 3.4", "stderr": ""}
)(),
)
doctor()
out = capsys.readouterr().out
assert "tmux" in out
def test_doctor_reports_missing_ttyd(capsys, monkeypatch):
"""doctor must report when ttyd is missing."""
from muxplex.cli import doctor
original_which = shutil.which
def mock_which(name):
if name == "ttyd":
return None
return original_which(name)
monkeypatch.setattr("shutil.which", mock_which)
doctor()
out = capsys.readouterr().out
assert "ttyd" in out
assert "not found" in out
def test_doctor_shows_platform(capsys):
"""doctor must show platform info."""
from muxplex.cli import doctor
doctor()
out = capsys.readouterr().out
assert "Platform" in out
def test_doctor_subcommand_registered():
"""doctor must be a valid subcommand in main() argparse."""
import io
from muxplex.cli import main
buf = io.StringIO()
with patch("sys.argv", ["muxplex", "--help"]):
try:
with patch("sys.stdout", buf):
main()
except SystemExit:
pass
help_text = buf.getvalue().lower()
assert "doctor" in help_text
def test_main_dispatches_to_doctor(monkeypatch):
"""main() with 'doctor' subcommand must invoke doctor()."""
from muxplex.cli import main
calls = []
monkeypatch.setattr("muxplex.cli.doctor", lambda: calls.append(True))
with patch("sys.argv", ["muxplex", "doctor"]):
main()
assert len(calls) == 1, (
"doctor() must be called once when 'doctor' subcommand is used"
)