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bot-bottle/bot_bottle/cli/commands/doctor.py
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fix: doctor probes backend readiness; install.sh resolves user-scripts dir
Addresses the third review round on PR #481.

- `bot-bottle doctor` now checks `is_backend_ready()` (a full backend
  status() probe: daemon reachable, network pool present, KVM usable)
  instead of the cheap PATH-only `is_backend_available()`. A host with a
  stopped Docker daemon or half-configured Firecracker no longer reports
  `ok: backend` / exit 0 when `start` can't actually work; each not-ready
  backend prints its own diagnostics, and doctor passes only if at least
  one backend is ready.
- `install.sh` resolves the pip `--user` scripts directory from the
  interpreter (`sysconfig.get_path("scripts", get_preferred_scheme("user"))`)
  instead of hardcoding `~/.local/bin`, which is wrong on a python.org
  macOS interpreter (`~/Library/Python/<X.Y>/bin`). The PATH guidance now
  prints the actual directory.

Tests: doctor tests mock `is_backend_ready` (the readiness contract) and
cover the not-ready → fail path; a new install-script test drives the
macOS `osx_framework_user` scheme and asserts it resolves a
non-~/.local/bin directory.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-07-25 22:34:25 -04:00

89 lines
2.8 KiB
Python

"""`doctor` CLI command — validate host prerequisites for running
bot-bottle and report what's ready.
Fails (non-zero exit) only on the two hard requirements: a new-enough
Python and at least one backend that is *ready* (passes its full status
checks, so `start` can actually work). The config directory is a soft
check — `install.sh` creates it, but a missing one only warrants a note,
not a failure, since `start` provisions what it needs on first run.
"""
from __future__ import annotations
import argparse
import sys
from pathlib import Path
from ...backend import is_backend_ready, known_backend_names
from ..constants import PROG
MIN_PYTHON = (3, 11)
CONFIG_DIR = ".bot-bottle"
def _ok(label: str, detail: str) -> None:
print(f"ok: {label}: {detail}")
def _warn(label: str, detail: str) -> None:
print(f"warn: {label}: {detail}")
def _fail(label: str, detail: str) -> None:
print(f"fail: {label}: {detail}")
def _check_python() -> bool:
v = sys.version_info
detail = f"{v.major}.{v.minor}.{v.micro}"
if (v.major, v.minor) >= MIN_PYTHON:
_ok("python", detail)
return True
_fail("python", f"{detail}; need {MIN_PYTHON[0]}.{MIN_PYTHON[1]} or newer")
return False
def _check_backends() -> bool:
"""At least one backend must be *ready* to run a bottle — i.e. pass its
full status() checks (daemon reachable, network pool present, KVM usable),
not merely have a binary on PATH. A binary-only check would report `ok`
on a host with a stopped Docker daemon or a half-configured Firecracker,
where `start` still can't work. Each not-ready backend prints its own
diagnostics (quiet=False) so the operator sees exactly what's missing."""
ready = []
for name in known_backend_names():
if is_backend_ready(name, quiet=False):
_ok("backend", f"{name}: ready")
ready.append(name)
else:
_warn("backend", f"{name}: not ready (see diagnostics above)")
if ready:
return True
_fail(
"backend",
"no backend is ready to run a bottle; start Docker, or finish "
"Apple Container (macOS) / Firecracker (Linux) setup",
)
return False
def _check_config_dir() -> None:
config = Path.home() / CONFIG_DIR
if config.is_dir():
_ok("config", str(config))
else:
_warn("config", f"{config} does not exist yet (created on first use)")
def cmd_doctor(argv: list[str]) -> int:
parser = argparse.ArgumentParser(
prog=f"{PROG} doctor",
description="Check host prerequisites for running bot-bottle.",
)
parser.parse_args(argv)
# Hard requirements gate the exit code; the config note is advisory.
required = [_check_python(), _check_backends()]
_check_config_dir()
return 0 if all(required) else 1