566 lines
15 KiB
Go
566 lines
15 KiB
Go
// PicoClaw - Ultra-lightweight personal AI agent
|
|
// Inspired by and based on nanobot: https://github.com/HKUDS/nanobot
|
|
// License: MIT
|
|
//
|
|
// Copyright (c) 2026 PicoClaw contributors
|
|
|
|
package agent
|
|
|
|
import (
|
|
"context"
|
|
"encoding/json"
|
|
"fmt"
|
|
"os"
|
|
"path/filepath"
|
|
"strings"
|
|
|
|
"github.com/sipeed/picoclaw/pkg/bus"
|
|
"github.com/sipeed/picoclaw/pkg/config"
|
|
"github.com/sipeed/picoclaw/pkg/logger"
|
|
"github.com/sipeed/picoclaw/pkg/providers"
|
|
"github.com/sipeed/picoclaw/pkg/session"
|
|
"github.com/sipeed/picoclaw/pkg/tools"
|
|
)
|
|
|
|
type AgentLoop struct {
|
|
bus *bus.MessageBus
|
|
provider providers.LLMProvider
|
|
workspace string
|
|
model string
|
|
maxIterations int
|
|
sessions *session.SessionManager
|
|
contextBuilder *ContextBuilder
|
|
tools *tools.ToolRegistry
|
|
running bool
|
|
}
|
|
|
|
func NewAgentLoop(cfg *config.Config, msgBus *bus.MessageBus, provider providers.LLMProvider) *AgentLoop {
|
|
workspace := cfg.WorkspacePath()
|
|
os.MkdirAll(workspace, 0755)
|
|
|
|
toolsRegistry := tools.NewToolRegistry()
|
|
toolsRegistry.Register(&tools.ReadFileTool{})
|
|
toolsRegistry.Register(&tools.WriteFileTool{})
|
|
toolsRegistry.Register(&tools.ListDirTool{})
|
|
toolsRegistry.Register(tools.NewExecTool(workspace))
|
|
|
|
braveAPIKey := cfg.Tools.Web.Search.APIKey
|
|
toolsRegistry.Register(tools.NewWebSearchTool(braveAPIKey, cfg.Tools.Web.Search.MaxResults))
|
|
toolsRegistry.Register(tools.NewWebFetchTool(50000))
|
|
|
|
// Register message tool
|
|
messageTool := tools.NewMessageTool()
|
|
messageTool.SetSendCallback(func(channel, chatID, content string) error {
|
|
msgBus.PublishOutbound(bus.OutboundMessage{
|
|
Channel: channel,
|
|
ChatID: chatID,
|
|
Content: content,
|
|
})
|
|
return nil
|
|
})
|
|
toolsRegistry.Register(messageTool)
|
|
|
|
// Register spawn tool
|
|
subagentManager := tools.NewSubagentManager(provider, workspace, msgBus)
|
|
spawnTool := tools.NewSpawnTool(subagentManager)
|
|
toolsRegistry.Register(spawnTool)
|
|
|
|
// Register edit file tool
|
|
editFileTool := tools.NewEditFileTool(workspace)
|
|
toolsRegistry.Register(editFileTool)
|
|
|
|
sessionsManager := session.NewSessionManager(filepath.Join(filepath.Dir(cfg.WorkspacePath()), "sessions"))
|
|
|
|
return &AgentLoop{
|
|
bus: msgBus,
|
|
provider: provider,
|
|
workspace: workspace,
|
|
model: cfg.Agents.Defaults.Model,
|
|
maxIterations: cfg.Agents.Defaults.MaxToolIterations,
|
|
sessions: sessionsManager,
|
|
contextBuilder: NewContextBuilder(workspace, func() []string { return toolsRegistry.GetSummaries() }),
|
|
tools: toolsRegistry,
|
|
running: false,
|
|
}
|
|
}
|
|
|
|
func (al *AgentLoop) Run(ctx context.Context) error {
|
|
al.running = true
|
|
|
|
for al.running {
|
|
select {
|
|
case <-ctx.Done():
|
|
return nil
|
|
default:
|
|
msg, ok := al.bus.ConsumeInbound(ctx)
|
|
if !ok {
|
|
continue
|
|
}
|
|
|
|
response, err := al.processMessage(ctx, msg)
|
|
if err != nil {
|
|
response = fmt.Sprintf("Error processing message: %v", err)
|
|
}
|
|
|
|
if response != "" {
|
|
al.bus.PublishOutbound(bus.OutboundMessage{
|
|
Channel: msg.Channel,
|
|
ChatID: msg.ChatID,
|
|
Content: response,
|
|
})
|
|
}
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (al *AgentLoop) Stop() {
|
|
al.running = false
|
|
}
|
|
|
|
func (al *AgentLoop) ProcessDirect(ctx context.Context, content, sessionKey string) (string, error) {
|
|
msg := bus.InboundMessage{
|
|
Channel: "cli",
|
|
SenderID: "user",
|
|
ChatID: "direct",
|
|
Content: content,
|
|
SessionKey: sessionKey,
|
|
}
|
|
|
|
return al.processMessage(ctx, msg)
|
|
}
|
|
|
|
func (al *AgentLoop) processMessage(ctx context.Context, msg bus.InboundMessage) (string, error) {
|
|
// Add message preview to log
|
|
preview := truncate(msg.Content, 80)
|
|
logger.InfoCF("agent", fmt.Sprintf("Processing message from %s:%s: %s", msg.Channel, msg.SenderID, preview),
|
|
map[string]interface{}{
|
|
"channel": msg.Channel,
|
|
"chat_id": msg.ChatID,
|
|
"sender_id": msg.SenderID,
|
|
"session_key": msg.SessionKey,
|
|
})
|
|
|
|
// Route system messages to processSystemMessage
|
|
if msg.Channel == "system" {
|
|
return al.processSystemMessage(ctx, msg)
|
|
}
|
|
|
|
// Update tool contexts
|
|
if tool, ok := al.tools.Get("message"); ok {
|
|
if mt, ok := tool.(*tools.MessageTool); ok {
|
|
mt.SetContext(msg.Channel, msg.ChatID)
|
|
}
|
|
}
|
|
if tool, ok := al.tools.Get("spawn"); ok {
|
|
if st, ok := tool.(*tools.SpawnTool); ok {
|
|
st.SetContext(msg.Channel, msg.ChatID)
|
|
}
|
|
}
|
|
|
|
history := al.sessions.GetHistory(msg.SessionKey)
|
|
summary := al.sessions.GetSummary(msg.SessionKey)
|
|
|
|
messages := al.contextBuilder.BuildMessages(
|
|
history,
|
|
summary,
|
|
msg.Content,
|
|
nil,
|
|
msg.Channel,
|
|
msg.ChatID,
|
|
)
|
|
|
|
iteration := 0
|
|
var finalContent string
|
|
|
|
for iteration < al.maxIterations {
|
|
iteration++
|
|
|
|
logger.DebugCF("agent", "LLM iteration",
|
|
map[string]interface{}{
|
|
"iteration": iteration,
|
|
"max": al.maxIterations,
|
|
})
|
|
|
|
toolDefs := al.tools.GetDefinitions()
|
|
providerToolDefs := make([]providers.ToolDefinition, 0, len(toolDefs))
|
|
for _, td := range toolDefs {
|
|
providerToolDefs = append(providerToolDefs, providers.ToolDefinition{
|
|
Type: td["type"].(string),
|
|
Function: providers.ToolFunctionDefinition{
|
|
Name: td["function"].(map[string]interface{})["name"].(string),
|
|
Description: td["function"].(map[string]interface{})["description"].(string),
|
|
Parameters: td["function"].(map[string]interface{})["parameters"].(map[string]interface{}),
|
|
},
|
|
})
|
|
}
|
|
|
|
// Log LLM request details
|
|
logger.DebugCF("agent", "LLM request",
|
|
map[string]interface{}{
|
|
"iteration": iteration,
|
|
"model": al.model,
|
|
"messages_count": len(messages),
|
|
"tools_count": len(providerToolDefs),
|
|
"max_tokens": 8192,
|
|
"temperature": 0.7,
|
|
"system_prompt_len": len(messages[0].Content),
|
|
})
|
|
|
|
// Log full messages (detailed)
|
|
logger.DebugCF("agent", "Full LLM request",
|
|
map[string]interface{}{
|
|
"iteration": iteration,
|
|
"messages_json": formatMessagesForLog(messages),
|
|
"tools_json": formatToolsForLog(providerToolDefs),
|
|
})
|
|
|
|
response, err := al.provider.Chat(ctx, messages, providerToolDefs, al.model, map[string]interface{}{
|
|
"max_tokens": 8192,
|
|
"temperature": 0.7,
|
|
})
|
|
|
|
if err != nil {
|
|
logger.ErrorCF("agent", "LLM call failed",
|
|
map[string]interface{}{
|
|
"iteration": iteration,
|
|
"error": err.Error(),
|
|
})
|
|
return "", fmt.Errorf("LLM call failed: %w", err)
|
|
}
|
|
|
|
if len(response.ToolCalls) == 0 {
|
|
finalContent = response.Content
|
|
logger.InfoCF("agent", "LLM response without tool calls (direct answer)",
|
|
map[string]interface{}{
|
|
"iteration": iteration,
|
|
"content_chars": len(finalContent),
|
|
})
|
|
break
|
|
}
|
|
|
|
toolNames := make([]string, 0, len(response.ToolCalls))
|
|
for _, tc := range response.ToolCalls {
|
|
toolNames = append(toolNames, tc.Name)
|
|
}
|
|
logger.InfoCF("agent", "LLM requested tool calls",
|
|
map[string]interface{}{
|
|
"tools": toolNames,
|
|
"count": len(toolNames),
|
|
"iteration": iteration,
|
|
})
|
|
|
|
assistantMsg := providers.Message{
|
|
Role: "assistant",
|
|
Content: response.Content,
|
|
}
|
|
|
|
for _, tc := range response.ToolCalls {
|
|
argumentsJSON, _ := json.Marshal(tc.Arguments)
|
|
assistantMsg.ToolCalls = append(assistantMsg.ToolCalls, providers.ToolCall{
|
|
ID: tc.ID,
|
|
Type: "function",
|
|
Function: &providers.FunctionCall{
|
|
Name: tc.Name,
|
|
Arguments: string(argumentsJSON),
|
|
},
|
|
})
|
|
}
|
|
messages = append(messages, assistantMsg)
|
|
|
|
for _, tc := range response.ToolCalls {
|
|
// Log tool call with arguments preview
|
|
argsJSON, _ := json.Marshal(tc.Arguments)
|
|
argsPreview := truncate(string(argsJSON), 200)
|
|
logger.InfoCF("agent", fmt.Sprintf("Tool call: %s(%s)", tc.Name, argsPreview),
|
|
map[string]interface{}{
|
|
"tool": tc.Name,
|
|
"iteration": iteration,
|
|
})
|
|
|
|
result, err := al.tools.Execute(ctx, tc.Name, tc.Arguments)
|
|
if err != nil {
|
|
result = fmt.Sprintf("Error: %v", err)
|
|
}
|
|
|
|
toolResultMsg := providers.Message{
|
|
Role: "tool",
|
|
Content: result,
|
|
ToolCallID: tc.ID,
|
|
}
|
|
messages = append(messages, toolResultMsg)
|
|
}
|
|
}
|
|
|
|
if finalContent == "" {
|
|
finalContent = "I've completed processing but have no response to give."
|
|
}
|
|
|
|
al.sessions.AddMessage(msg.SessionKey, "user", msg.Content)
|
|
al.sessions.AddMessage(msg.SessionKey, "assistant", finalContent)
|
|
al.sessions.Save(al.sessions.GetOrCreate(msg.SessionKey))
|
|
|
|
// Log response preview
|
|
responsePreview := truncate(finalContent, 120)
|
|
logger.InfoCF("agent", fmt.Sprintf("Response to %s:%s: %s", msg.Channel, msg.SenderID, responsePreview),
|
|
map[string]interface{}{
|
|
"iterations": iteration,
|
|
"final_length": len(finalContent),
|
|
})
|
|
|
|
return finalContent, nil
|
|
}
|
|
|
|
func (al *AgentLoop) processSystemMessage(ctx context.Context, msg bus.InboundMessage) (string, error) {
|
|
// Verify this is a system message
|
|
if msg.Channel != "system" {
|
|
return "", fmt.Errorf("processSystemMessage called with non-system message channel: %s", msg.Channel)
|
|
}
|
|
|
|
logger.InfoCF("agent", "Processing system message",
|
|
map[string]interface{}{
|
|
"sender_id": msg.SenderID,
|
|
"chat_id": msg.ChatID,
|
|
})
|
|
|
|
// Parse origin from chat_id (format: "channel:chat_id")
|
|
var originChannel, originChatID string
|
|
if idx := strings.Index(msg.ChatID, ":"); idx > 0 {
|
|
originChannel = msg.ChatID[:idx]
|
|
originChatID = msg.ChatID[idx+1:]
|
|
} else {
|
|
// Fallback
|
|
originChannel = "cli"
|
|
originChatID = msg.ChatID
|
|
}
|
|
|
|
// Use the origin session for context
|
|
sessionKey := fmt.Sprintf("%s:%s", originChannel, originChatID)
|
|
|
|
// Update tool contexts to original channel/chatID
|
|
if tool, ok := al.tools.Get("message"); ok {
|
|
if mt, ok := tool.(*tools.MessageTool); ok {
|
|
mt.SetContext(originChannel, originChatID)
|
|
}
|
|
}
|
|
if tool, ok := al.tools.Get("spawn"); ok {
|
|
if st, ok := tool.(*tools.SpawnTool); ok {
|
|
st.SetContext(originChannel, originChatID)
|
|
}
|
|
}
|
|
|
|
// Build messages with the announce content
|
|
history := al.sessions.GetHistory(sessionKey)
|
|
summary := al.sessions.GetSummary(sessionKey)
|
|
messages := al.contextBuilder.BuildMessages(
|
|
history,
|
|
summary,
|
|
msg.Content,
|
|
nil,
|
|
originChannel,
|
|
originChatID,
|
|
)
|
|
|
|
iteration := 0
|
|
var finalContent string
|
|
|
|
for iteration < al.maxIterations {
|
|
iteration++
|
|
|
|
toolDefs := al.tools.GetDefinitions()
|
|
providerToolDefs := make([]providers.ToolDefinition, 0, len(toolDefs))
|
|
for _, td := range toolDefs {
|
|
providerToolDefs = append(providerToolDefs, providers.ToolDefinition{
|
|
Type: td["type"].(string),
|
|
Function: providers.ToolFunctionDefinition{
|
|
Name: td["function"].(map[string]interface{})["name"].(string),
|
|
Description: td["function"].(map[string]interface{})["description"].(string),
|
|
Parameters: td["function"].(map[string]interface{})["parameters"].(map[string]interface{}),
|
|
},
|
|
})
|
|
}
|
|
|
|
// Log LLM request details
|
|
logger.DebugCF("agent", "LLM request",
|
|
map[string]interface{}{
|
|
"iteration": iteration,
|
|
"model": al.model,
|
|
"messages_count": len(messages),
|
|
"tools_count": len(providerToolDefs),
|
|
"max_tokens": 8192,
|
|
"temperature": 0.7,
|
|
"system_prompt_len": len(messages[0].Content),
|
|
})
|
|
|
|
// Log full messages (detailed)
|
|
logger.DebugCF("agent", "Full LLM request",
|
|
map[string]interface{}{
|
|
"iteration": iteration,
|
|
"messages_json": formatMessagesForLog(messages),
|
|
"tools_json": formatToolsForLog(providerToolDefs),
|
|
})
|
|
|
|
response, err := al.provider.Chat(ctx, messages, providerToolDefs, al.model, map[string]interface{}{
|
|
"max_tokens": 8192,
|
|
"temperature": 0.7,
|
|
})
|
|
|
|
if err != nil {
|
|
logger.ErrorCF("agent", "LLM call failed in system message",
|
|
map[string]interface{}{
|
|
"iteration": iteration,
|
|
"error": err.Error(),
|
|
})
|
|
return "", fmt.Errorf("LLM call failed: %w", err)
|
|
}
|
|
|
|
if len(response.ToolCalls) == 0 {
|
|
finalContent = response.Content
|
|
break
|
|
}
|
|
|
|
assistantMsg := providers.Message{
|
|
Role: "assistant",
|
|
Content: response.Content,
|
|
}
|
|
|
|
for _, tc := range response.ToolCalls {
|
|
argumentsJSON, _ := json.Marshal(tc.Arguments)
|
|
assistantMsg.ToolCalls = append(assistantMsg.ToolCalls, providers.ToolCall{
|
|
ID: tc.ID,
|
|
Type: "function",
|
|
Function: &providers.FunctionCall{
|
|
Name: tc.Name,
|
|
Arguments: string(argumentsJSON),
|
|
},
|
|
})
|
|
}
|
|
messages = append(messages, assistantMsg)
|
|
|
|
for _, tc := range response.ToolCalls {
|
|
result, err := al.tools.Execute(ctx, tc.Name, tc.Arguments)
|
|
if err != nil {
|
|
result = fmt.Sprintf("Error: %v", err)
|
|
}
|
|
|
|
toolResultMsg := providers.Message{
|
|
Role: "tool",
|
|
Content: result,
|
|
ToolCallID: tc.ID,
|
|
}
|
|
messages = append(messages, toolResultMsg)
|
|
}
|
|
}
|
|
|
|
if finalContent == "" {
|
|
finalContent = "Background task completed."
|
|
}
|
|
|
|
// Save to session with system message marker
|
|
al.sessions.AddMessage(sessionKey, "user", fmt.Sprintf("[System: %s] %s", msg.SenderID, msg.Content))
|
|
al.sessions.AddMessage(sessionKey, "assistant", finalContent)
|
|
al.sessions.Save(al.sessions.GetOrCreate(sessionKey))
|
|
|
|
logger.InfoCF("agent", "System message processing completed",
|
|
map[string]interface{}{
|
|
"iterations": iteration,
|
|
"final_length": len(finalContent),
|
|
})
|
|
|
|
return finalContent, nil
|
|
}
|
|
|
|
// truncate returns a truncated version of s with at most maxLen characters.
|
|
// If the string is truncated, "..." is appended to indicate truncation.
|
|
// If the string fits within maxLen, it is returned unchanged.
|
|
func truncate(s string, maxLen int) string {
|
|
if len(s) <= maxLen {
|
|
return s
|
|
}
|
|
// Reserve 3 chars for "..."
|
|
if maxLen <= 3 {
|
|
return s[:maxLen]
|
|
}
|
|
return s[:maxLen-3] + "..."
|
|
}
|
|
|
|
// GetStartupInfo returns information about loaded tools and skills for logging.
|
|
func (al *AgentLoop) GetStartupInfo() map[string]interface{} {
|
|
info := make(map[string]interface{})
|
|
|
|
// Tools info
|
|
tools := al.tools.List()
|
|
info["tools"] = map[string]interface{}{
|
|
"count": len(tools),
|
|
"names": tools,
|
|
}
|
|
|
|
// Skills info
|
|
info["skills"] = al.contextBuilder.GetSkillsInfo()
|
|
|
|
return info
|
|
}
|
|
|
|
// formatMessagesForLog formats messages for logging
|
|
func formatMessagesForLog(messages []providers.Message) string {
|
|
if len(messages) == 0 {
|
|
return "[]"
|
|
}
|
|
|
|
var result string
|
|
result += "[\n"
|
|
for i, msg := range messages {
|
|
result += fmt.Sprintf(" [%d] Role: %s\n", i, msg.Role)
|
|
if msg.ToolCalls != nil && len(msg.ToolCalls) > 0 {
|
|
result += " ToolCalls:\n"
|
|
for _, tc := range msg.ToolCalls {
|
|
result += fmt.Sprintf(" - ID: %s, Type: %s, Name: %s\n", tc.ID, tc.Type, tc.Name)
|
|
if tc.Function != nil {
|
|
result += fmt.Sprintf(" Arguments: %s\n", truncateString(tc.Function.Arguments, 200))
|
|
}
|
|
}
|
|
}
|
|
if msg.Content != "" {
|
|
content := truncateString(msg.Content, 200)
|
|
result += fmt.Sprintf(" Content: %s\n", content)
|
|
}
|
|
if msg.ToolCallID != "" {
|
|
result += fmt.Sprintf(" ToolCallID: %s\n", msg.ToolCallID)
|
|
}
|
|
result += "\n"
|
|
}
|
|
result += "]"
|
|
return result
|
|
}
|
|
|
|
// formatToolsForLog formats tool definitions for logging
|
|
func formatToolsForLog(tools []providers.ToolDefinition) string {
|
|
if len(tools) == 0 {
|
|
return "[]"
|
|
}
|
|
|
|
var result string
|
|
result += "[\n"
|
|
for i, tool := range tools {
|
|
result += fmt.Sprintf(" [%d] Type: %s, Name: %s\n", i, tool.Type, tool.Function.Name)
|
|
result += fmt.Sprintf(" Description: %s\n", tool.Function.Description)
|
|
if len(tool.Function.Parameters) > 0 {
|
|
result += fmt.Sprintf(" Parameters: %s\n", truncateString(fmt.Sprintf("%v", tool.Function.Parameters), 200))
|
|
}
|
|
}
|
|
result += "]"
|
|
return result
|
|
}
|
|
|
|
// truncateString truncates a string to max length
|
|
func truncateString(s string, maxLen int) string {
|
|
if len(s) <= maxLen {
|
|
return s
|
|
}
|
|
if maxLen <= 3 {
|
|
return s[:maxLen]
|
|
}
|
|
return s[:maxLen-3] + "..."
|
|
}
|