AI Agent 分层架构图

↑ 请求上行 · 上层依赖下层 · ↓ 响应下行

Layer 1 — 接入层 Input Channels

飞书 Bot

feishu_bot.c

WebSocket

ws_server.c :28789

NSH CLI

nsh_commands.c

MQTT

mqtt_channel.c

Voice (PTT)

voice_channel.c

WeChat

weixin_channel.c
iLink Bot API

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Layer 2 — 消息总线 Message Bus

Inbound Queue

16 slots

Outbound Queue

16 slots

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Layer 3 — Agent 核心 (ReAct Loop)

Agent Loop

ReAct ×10 iterations

Context Builder

12KB prompt

Session Mgr

20 msgs history

Agent Trace

结构化追踪

Agent Mem

动态缩放

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Layer 4 — 工具层 + LLM 层

4a — Tools (14+)

run_shell

analyze_image

web_search

feishu_doc/chat

file ops

cron_*

music_*

system/health

4b — LLM

LLM Router

4 backends, failover, latency

LLM Cache

8-slot LRU, TTL 300s

LLM Proxy

OpenAI-compatible API

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Layer 5 — 语音管线 Voice Pipeline

Audio Capture

PCM 16kHz lazy alloc

Volc ASR

WebSocket 流式

Volc TTS

HTTP 分块 128+16KB

Audio Playback

PCM → Speaker

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Layer 6 — 扩展层 Extensions

MCP Client

Streamable HTTP (Amap/DiDi)

Node Executor

QuickJS / Lua

Skills Loader

动态加载技能

Memory Store

KV 持久化

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Layer 7 — 基础设施 Infrastructure

TLS (mbedTLS)

HTTPS/WSS

HTTP Proxy

SOCKS5/HTTP

Config Store

NVS / File

Network Stack

TCP/UDP/DNS

Cron Engine

定时任务

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Layer 8 — OS 层 NuttX / POSIX

pthreads / mutex

POSIX FS / Socket

Audio Driver

Framebuffer

Timer / RTC