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bot-bottle/claude_bottle/cli/start.py
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feat(bottle): random-suffix identity + cli.py resume <identity>
Replaces the cwd-hash identity with a random 5-char base36 suffix
per launch, so two simultaneous `start <agent>` invocations against
the same cwd no longer collide on container names. Each launch is
its own bottle.

State carries metadata: every prepare step writes
~/.claude-bottle/state/<identity>/metadata.json with the
(agent_name, cwd, copy_cwd, started_at) the bottle was launched
with. The new `cli.py resume <identity>` reads this metadata and
re-launches a bottle pinned to the same identity — picking up the
per-bottle Dockerfile (from a prior capability-block apply) and
the transcript snapshot under the same state dir.

- bottle_state.py: bottle_identity(agent_name) drops the cwd param
  and gains a random suffix; BottleMetadata dataclass +
  read/write/metadata_path helpers.
- BottleSpec gains an optional identity field — resume sets it to
  pin the identity; start leaves it empty so prepare mints fresh.
- prepare.py: writes metadata at launch time; uses spec.identity if
  provided (resume) else bottle_identity(agent_name) (fresh start).
- start.py: extracted _launch_bottle from cmd_start so resume can
  share the launch core; prints `./cli.py resume <identity>` hint
  at session end.
- cli/resume.py (new): reads metadata, reconstructs BottleSpec
  with the recorded identity + cwd, delegates to _launch_bottle.
  Errors clearly when no state exists for the given identity.
- cli/__init__.py: registers `resume` in COMMANDS + usage.
- dashboard.py: capability-block approval status line now appends
  the `resume <identity>` hint so the operator can copy-paste the
  rebuild command without leaving the TUI.

Closes the rebuild loop in PRD 0016: agent calls capability-block →
operator approves → bottle torn down with state preserved → status
line shows resume command → operator runs it → replacement bottle
boots with the new Dockerfile and prior transcript.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
2026-05-25 06:09:45 -04:00

115 lines
3.7 KiB
Python

"""start: boot a sandboxed container for a named agent and attach an
interactive claude-code session. The container is torn down when the
session ends.
The launch core is shared with `cli.py resume <identity>`: see
_launch_bottle below.
"""
from __future__ import annotations
import argparse
import json
import os
import shutil
import sys
import tempfile
from pathlib import Path
from ..backend import BottleSpec, get_bottle_backend
from ..log import die, info
from ..manifest import Manifest
from ._common import PROG, USER_CWD, read_tty_line
def cmd_start(argv: list[str]) -> int:
parser = argparse.ArgumentParser(prog=f"{PROG} start", add_help=True)
parser.add_argument("--dry-run", action="store_true")
parser.add_argument("--cwd", action="store_true", help="copy host cwd into a derived image")
parser.add_argument("--remote-control", action="store_true")
parser.add_argument(
"--format",
choices=("text", "json"),
default="text",
help="preflight output format; --format=json requires --dry-run",
)
parser.add_argument("name", help="agent name defined in claude-bottle.json")
args = parser.parse_args(argv)
dry_run = args.dry_run or os.environ.get("CLAUDE_BOTTLE_DRY_RUN") == "1"
if args.format == "json" and not dry_run:
die("--format=json requires --dry-run")
manifest = Manifest.resolve(USER_CWD)
spec = BottleSpec(
manifest=manifest,
agent_name=args.name,
copy_cwd=args.cwd,
user_cwd=USER_CWD,
)
return _launch_bottle(
spec,
dry_run=dry_run,
output_format=args.format,
remote_control=args.remote_control,
)
def _launch_bottle(
spec: BottleSpec,
*,
dry_run: bool,
output_format: str,
remote_control: bool,
) -> int:
"""Shared launch core for `start` and `resume`. Builds the plan,
prints / dry-runs / prompts as appropriate, brings the bottle up,
attaches claude, and prints the resume hint on session end."""
stage_dir = Path(tempfile.mkdtemp(prefix="claude-bottle-stage."))
try:
backend = get_bottle_backend()
plan = backend.prepare(spec, stage_dir=stage_dir)
if output_format == "json":
json.dump(plan.to_dict(remote_control=remote_control), sys.stdout, indent=2)
sys.stdout.write("\n")
return 0
plan.print(remote_control=remote_control)
if dry_run:
info("dry-run requested; not starting container.")
return 0
sys.stderr.write("claude-bottle: launch this agent? [y/N] ")
sys.stderr.flush()
reply = read_tty_line()
if reply not in ("y", "Y", "yes", "YES"):
info("aborted by user")
return 0
identity = _identity_from_plan(plan)
with backend.launch(plan) as bottle:
info(
"attaching interactive claude session "
"(Ctrl-D or 'exit' to leave; container will be removed)"
)
claude_args = ["--dangerously-skip-permissions"]
if remote_control:
claude_args.append("--remote-control")
bottle.exec_claude(claude_args, tty=True)
info(f"session ended; container {bottle.name} will be removed")
if identity:
info(f"to resume this bottle: ./cli.py resume {identity}")
return 0
finally:
shutil.rmtree(stage_dir, ignore_errors=True)
def _identity_from_plan(plan: object) -> str:
"""Backend-specific: the docker plan exposes the identity as
`.slug`. Other backends in the future would expose their own
identity attribute; for now we duck-type to keep this layer
backend-agnostic."""
return getattr(plan, "slug", "")