Restart Guard

Purpose / 目标

Safely restart gateway while preserving context and guaranteeing a post-restart report path to the user session.
安全重启网关，保留上下文，并保证重启后可主动回报到用户会话。

Trigger / 触发条件

Use this skill when the task involves OpenClaw gateway restart, watchdog recovery, or post-restart reporting.
当任务涉及 OpenClaw 网关重启、看门狗恢复、重启后回报时使用。

Natural-language triggers (must auto-run, do not ask user for script commands):

• "可以重启了"
• "现在重启吧"
• "restart now"
• "go ahead and restart"

自然语言触发（必须自动执行，不让用户手工跑脚本）：

• “可以重启了”
• “现在重启吧”
• “restart now”
• “go ahead and restart”

Required Preconditions / 前置条件

• openclaw CLI is available.
• Restart config exists (config.example.yaml or config/restart-guard.yaml.example copied to runtime path).
• Agent can execute shell commands.
• openclaw CLI 可用。
• 重启配置文件存在（从示例拷贝到运行路径）。
• agent 具备执行命令能力。

Workflow / 标准流程

0) Default behavior / 默认行为

When user expresses restart intent without specifying channel details:

• Run full flow automatically via scripts/auto_restart.py.
• Default --notify-mode origin.
• Infer origin session key automatically (env/context/sessions), no user input required.
• Auto-discover external channels and persist effective_notify_plan.
• Before trigger, proactively announce disaster delivery route/channels to origin session.
• After restart event arrives, net summarizes result to user.

当用户仅表达重启意图且未指定渠道细节时：

• 使用 scripts/auto_restart.py 自动执行全流程。
• 默认 --notify-mode origin。
• 自动推断源会话 key（env/context/sessions），无需用户补参数。
• 自动发现外部渠道并写入 effective_notify_plan。
• 触发前先在源会话预告灾难通知路由与渠道。
• 收到重启事件后，由 net 向用户汇总结果。

1) Discover channels and mode / 发现渠道与模式（可选）

python3 <skill-dir>/scripts/discover_channels.py --config <config-path> --json

Ask user:

• notify mode (origin recommended, or selected, all)
• selected channel/target if needed

询问用户：

• 通知模式（推荐 origin，可选 selected、all）
• 若需要，指定渠道与目标

2) Write context / 写入现场

python3 <skill-dir>/scripts/write_context.py \
  --config <config-path> \
  --reason "config change" \
  --verify 'openclaw health --json' 'ok' \
  --resume "report restart result to user"

3) Execute restart / 执行重启

Recommended one-command entry:

python3 <skill-dir>/scripts/auto_restart.py \
  --config <config-path> \
  --reason "config change" \
  --notify-mode origin

推荐单命令入口：

python3 <skill-dir>/scripts/auto_restart.py \
  --config <config-path> \
  --reason "配置变更" \
  --notify-mode origin

python3 <skill-dir>/scripts/restart.py \
  --config <config-path> \
  --reason "config change" \
  --notify-mode origin \
  --origin-session-key <session-key>

Selected channel mode:

python3 <skill-dir>/scripts/restart.py \
  --config <config-path> \
  --reason "config change" \
  --notify-mode selected \
  --channel telegram \
  --target 726647436

4) Postcheck / 事后校验

python3 <skill-dir>/scripts/postcheck.py --config <config-path>

Contract / 契约

• Event contract: restart_guard.result.v1
• Required fields: status, restart_id
• Context adds:
  • restart_id
  • origin_session_key
  • notify_mode
  • channel_selection
  • effective_notify_plan
  • state_timestamps
  • diagnostics_file
  • delivery_status
• Optional event fields:
  • severity
  • failure_phase
  • error_code
  • delivery_attempts
  • delivery_route
  • delivery_exhausted
  • diagnostics_file

Notes / 注意事项

• webui is not treated as disabled notification anymore; origin-session ACK is primary path.
• webui 不再视为禁用通知；主路径是回发到发起会话。
• Verify/diagnostics commands run in strict non-shell mode.
• 校验/诊断命令以严格非 shell 模式执行（包含管道等 shell 元字符会被拒绝）。
• For implementation-level replication details, see ENHANCED_RESTART_IMPLEMENTATION_SPEC.md.
• 若需按工程级标准复刻实现，请参考 ENHANCED_RESTART_IMPLEMENTATION_SPEC.md。
• Do not expose internal scripts/steps unless user explicitly asks for internals.
• 除非用户明确要求细节，否则不要向用户暴露内部脚本步骤。
• Guardian uses strict success invariant:
  • down_detected && start_attempted && up_healthy
• Guardian success requires strict invariant:
  • down_detected && start_attempted && up_healthy

Failure Handling / 故障处理

• On timeout/failure, guardian writes local diagnostics file (restart-diagnostics-<restart_id>.md/json), sends concise summary, and retries delivery within budget.
• 若超时或失败，guardian 会写本地诊断文件（restart-diagnostics-<restart_id>.md/json），发送简要摘要，并在预算内重试送达。
• Fixed disaster route: origin session -> agent:main:main -> all discovered external channels.
• 固定灾难路由：源会话 -> agent:main:main -> 所有已发现外部渠道。
• Guardian exits after successful delivery or budget exhaustion; no long-lived watchdog process after disaster handling.
• 灾难处理结束后（送达成功或预算耗尽）guardian 必须退出，不长期驻留。