Files
pangolin/server/internal/agentd/ttl.go
T
wangjia f03d2dc8a6 feat(agent): node agent — enroll/mTLS, heartbeat, command stream, sing-box 用户表 (tsk__R8M4jEw43JR)
与控制面同仓同 go.mod,新增节点 agent 实现:

- proto/agent/v1/agent.proto + internal/pb/agentv1:冻结的控制面↔agent gRPC 契约
  (Enroll/Register/Heartbeat/Subscribe/Ack/ReportUsage)。仓库尚无 protoc 流水线,
  暂以手写 Go 类型 + JSON gRPC codec 实现,与 proto 1:1 对应,待 protoc 接入即可替换。
- internal/agentd:
  - enroll.go:首启生成 EC 密钥+CSR,持 bootstrap token 调 Enroll 换 90d 节点证书
    (CN=node_uuid),落 /etc/pangolin-agent/,此后 mTLS。
  - conn.go(agent.go)+creds.go:mTLS 主动拨号 + 指数退避重连;重连携带 last_command_id;
    Register 取 ConfigSnapshot 全量配置覆盖本地。
  - heartbeat.go:30s 上报 peer/带宽/CPU + config_version;need_full_resync→全量同步。
  - command.go:消费 Subscribe,Upsert/Revoke/Rotate/ApplyConfig/Lifecycle 幂等处理后
    Ack(at-least-once,按 command_id 去重)。
  - singbox.go+render.go:内存用户表 + 落盘 state.json(仅 dp_uuid+expires_at);任何变更
    渲染完整 sing-box 配置(REALITY users[uuid,flow] + Hy2 users[派生口令])→ 500ms 去抖
    合并 → systemd 重启。
  - ttl.go:凭证 TTL 定时移除并上报。
  - usage.go:按 dp_uuid 聚合上报,绝无 user_id/email/目的地址。
  - derive.go:Hy2 口令 = HMAC-SHA256(key, dp_uuid),与控制面同源派生。
- cmd/agent:入口(flag/env 配置)。
- infra/cloud-init/{node.yaml.tmpl,install-node.sh,README.md}:一段式安装,下载锁定版本
  二进制并校验 SHA-256,systemd 拉管,首启即 Enroll/Register。shellcheck -S warning 通过。

测试(bufconn mock 控制面,无需 docker):Enroll→Register→Heartbeat 全流转;Upsert/Revoke
渲染正确;Rotate 宽限期新旧并存到点移除;TTL 自动移除并上报;断流重连 last_command_id
续发不丢不重;need_full_resync 触发重注册;state.json 恢复;去抖合并;扫描确认无身份字段。
go test -race ./internal/agentd/... ./internal/pb/... 通过;go vet ./... 通过。

落实 doc/04 §2 节点无状态化与 doc/06 §3 数据面红线(节点仅见 dp_uuid)。

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-13 12:26:58 +08:00

31 lines
978 B
Go

package agentd
import (
"context"
"time"
)
// runTTL periodically sweeps expired credentials out of the local table. It runs
// for the whole agent lifetime (independent of the control-plane connection) so
// credentials expire on time even during a network partition.
//
// Per doc/06, sing-box has no native per-user TTL: free-plan credentials carry the
// current day's remaining minutes as expires_at, and paid (24h) credentials are
// refreshed by RotateCredential/Upsert commands from the control plane. When a
// credential expires the agent removes it locally, re-renders sing-box and (via
// SingBox.OnExpire) surfaces the removal upstream.
func (a *Agent) runTTL(ctx context.Context) {
ticker := time.NewTicker(a.cfg.TTLScanInterval)
defer ticker.Stop()
for {
select {
case <-ctx.Done():
return
case <-ticker.C:
if removed := a.sb.sweepExpired(); len(removed) > 0 {
logf("ttl sweep removed %d expired credential(s)", len(removed))
}
}
}
}