245 lines
6.9 KiB
Go
245 lines
6.9 KiB
Go
package agent
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import (
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"context"
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"encoding/json"
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"fmt"
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"strings"
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"laodingbot/internal/llm"
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"laodingbot/internal/logger"
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"laodingbot/internal/memory"
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"laodingbot/internal/tools"
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)
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type Orchestrator struct {
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llm llm.Client
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store *memory.SQLiteStore
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tools *tools.Registry
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soul string
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skillsDoc string
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reactMaxStep int
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log *logger.Logger
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}
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func NewOrchestrator(
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llmClient llm.Client,
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store *memory.SQLiteStore,
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registry *tools.Registry,
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soul string,
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skillsDoc string,
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reactMaxStep int,
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log *logger.Logger,
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) *Orchestrator {
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if reactMaxStep <= 0 {
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reactMaxStep = 4
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}
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return &Orchestrator{
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llm: llmClient,
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store: store,
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tools: registry,
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soul: soul,
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skillsDoc: skillsDoc,
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reactMaxStep: reactMaxStep,
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log: log,
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}
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}
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func (o *Orchestrator) HandleMessage(ctx context.Context, chatID, userID, text string) (string, error) {
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if o.log != nil {
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o.log.Infof("handle message chat_id=%s user_id=%s text_len=%d", chatID, userID, len(text))
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}
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if err := o.store.SaveMessage(chatID, userID, "user", text); err != nil {
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if o.log != nil {
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o.log.Errorf("save user message failed chat_id=%s err=%v", chatID, err)
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}
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return "", err
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}
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if strings.HasPrefix(strings.TrimSpace(text), "/tool ") {
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if o.log != nil {
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o.log.Debugf("detected tool command chat_id=%s", chatID)
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}
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response, err := o.handleToolCommand(ctx, strings.TrimSpace(strings.TrimPrefix(text, "/tool ")))
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if err != nil {
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if o.log != nil {
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o.log.Errorf("tool command failed chat_id=%s err=%v", chatID, err)
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}
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return "", err
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}
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if err := o.store.SaveMessage(chatID, userID, "assistant", response); err != nil {
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if o.log != nil {
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o.log.Errorf("save assistant tool response failed chat_id=%s err=%v", chatID, err)
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}
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return "", err
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}
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if o.log != nil {
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o.log.Infof("tool command success chat_id=%s response_len=%d", chatID, len(response))
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}
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return response, nil
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}
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recent, err := o.store.LoadRecent(chatID, 16)
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if err != nil {
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if o.log != nil {
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o.log.Errorf("load recent failed chat_id=%s err=%v", chatID, err)
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}
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return "", err
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}
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compressed := memory.CompressForPrompt(recent, 6000)
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if o.log != nil {
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o.log.Debugf("prompt context prepared chat_id=%s recent_count=%d compressed_len=%d", chatID, len(recent), len(compressed))
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}
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response, err := o.runReAct(ctx, compressed, text)
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if err != nil {
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if o.log != nil {
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o.log.Errorf("llm generate failed chat_id=%s err=%v", chatID, err)
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}
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return "", err
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}
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if err := o.store.SaveMessage(chatID, userID, "assistant", response); err != nil {
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if o.log != nil {
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o.log.Errorf("save assistant response failed chat_id=%s err=%v", chatID, err)
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}
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return "", err
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}
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if o.log != nil {
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o.log.Infof("message handled chat_id=%s response_len=%d", chatID, len(response))
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}
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return response, nil
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}
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type reactDecision struct {
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Thought string `json:"thought"`
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Action string `json:"action"`
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ActionInput string `json:"action_input"`
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Final string `json:"final"`
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}
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func (o *Orchestrator) runReAct(ctx context.Context, compressedContext, userInput string) (string, error) {
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systemPrompt := strings.Join([]string{
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"你是一个个人自动化助手，必须遵循如下人格设定并保持一致：",
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o.soul,
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"",
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"当前可用 skills 文档：",
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o.skillsDoc,
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"",
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"你必须使用 ReAct 模式做决策。",
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"如果问题需要外部信息（如文件系统、目录内容、命令执行），优先通过工具获取证据再回答。",
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"当用户询问目录中文件时，应优先使用 shell 工具（例如 ls/find）。",
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"你的输出必须是 JSON，对象字段为 thought, action, action_input, final。",
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"规则：",
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"1) 当需要调工具时：final 置空，action 为 shell 或 file，action_input 为工具输入。",
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"2) 当可以最终回答时：action 置 none，action_input 置空，final 填最终回复。",
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"3) 不要输出 JSON 之外内容。",
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}, "\n")
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scratchpad := ""
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for step := 1; step <= o.reactMaxStep; step++ {
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prompt := strings.Join([]string{
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"历史上下文：",
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compressedContext,
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"",
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"用户问题：",
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userInput,
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"",
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"当前推理记录（按时间顺序）：",
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scratchpad,
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"",
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fmt.Sprintf("请输出下一步 JSON 决策。当前步骤: %d/%d", step, o.reactMaxStep),
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}, "\n")
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raw, err := o.llm.Generate(ctx, systemPrompt, prompt)
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if err != nil {
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return "", err
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}
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decision, err := parseDecision(raw)
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if err != nil {
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if o.log != nil {
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o.log.Warnf("react parse failed, use raw as final err=%v", err)
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}
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return strings.TrimSpace(raw), nil
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}
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action := strings.ToLower(strings.TrimSpace(decision.Action))
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if action == "" {
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action = "none"
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}
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if action == "none" {
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finalText := strings.TrimSpace(decision.Final)
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if finalText == "" {
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finalText = "我已完成思考，但当前没有足够信息给出稳定结论。"
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}
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return finalText, nil
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}
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tool, ok := o.tools.Get(action)
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if !ok {
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scratchpad += fmt.Sprintf("Step %d Thought: %s\nStep %d Observation: tool %s 不存在\n", step, decision.Thought, step, action)
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continue
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}
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toolOut, toolErr := tool.Call(ctx, decision.ActionInput)
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obs := strings.TrimSpace(toolOut)
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if obs == "" {
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obs = "(empty output)"
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}
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if toolErr != nil {
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obs = obs + "\nERROR: " + toolErr.Error()
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}
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if len(obs) > 2000 {
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obs = obs[:2000]
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}
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scratchpad += fmt.Sprintf("Step %d Thought: %s\nStep %d Action: %s\nStep %d ActionInput: %s\nStep %d Observation: %s\n", step, decision.Thought, step, action, step, decision.ActionInput, step, obs)
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}
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return "我尝试了多轮思考与工具调用，但仍未得到稳定结论。请给我更具体的约束或允许我继续尝试。", nil
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}
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func parseDecision(raw string) (reactDecision, error) {
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raw = strings.TrimSpace(raw)
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raw = strings.TrimPrefix(raw, "```json")
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raw = strings.TrimPrefix(raw, "```")
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raw = strings.TrimSuffix(raw, "```")
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raw = strings.TrimSpace(raw)
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start := strings.Index(raw, "{")
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end := strings.LastIndex(raw, "}")
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if start < 0 || end < start {
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return reactDecision{}, fmt.Errorf("no json object found")
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}
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raw = raw[start : end+1]
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var out reactDecision
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if err := json.Unmarshal([]byte(raw), &out); err != nil {
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return reactDecision{}, err
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}
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return out, nil
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}
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func (o *Orchestrator) handleToolCommand(ctx context.Context, payload string) (string, error) {
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parts := strings.SplitN(payload, " ", 2)
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if len(parts) < 2 {
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if o.log != nil {
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o.log.Warnf("invalid tool command payload=%q", payload)
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}
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return "", fmt.Errorf("tool command format: /tool <name> <input>")
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}
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name := strings.TrimSpace(parts[0])
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input := parts[1]
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if o.log != nil {
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o.log.Debugf("dispatch tool name=%s input_len=%d", name, len(input))
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}
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t, ok := o.tools.Get(name)
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if !ok {
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if o.log != nil {
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o.log.Warnf("unknown tool requested name=%s", name)
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}
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return "", fmt.Errorf("unknown tool: %s", name)
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}
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return t.Call(ctx, input)
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}
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