324 lines
8.2 KiB
Go
324 lines
8.2 KiB
Go
package tools
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import (
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"context"
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"fmt"
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"sync"
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"time"
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"github.com/sipeed/picoclaw/pkg/bus"
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"github.com/sipeed/picoclaw/pkg/providers"
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)
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type SubagentTask struct {
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ID string
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Task string
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Label string
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OriginChannel string
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OriginChatID string
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Status string
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Result string
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Created int64
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}
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type SubagentManager struct {
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tasks map[string]*SubagentTask
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mu sync.RWMutex
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provider providers.LLMProvider
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defaultModel string
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bus *bus.MessageBus
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workspace string
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tools *ToolRegistry
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maxIterations int
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nextID int
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}
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func NewSubagentManager(provider providers.LLMProvider, defaultModel, workspace string, bus *bus.MessageBus) *SubagentManager {
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return &SubagentManager{
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tasks: make(map[string]*SubagentTask),
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provider: provider,
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defaultModel: defaultModel,
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bus: bus,
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workspace: workspace,
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tools: NewToolRegistry(),
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maxIterations: 10,
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nextID: 1,
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}
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}
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// SetTools sets the tool registry for subagent execution.
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// If not set, subagent will have access to the provided tools.
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func (sm *SubagentManager) SetTools(tools *ToolRegistry) {
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sm.mu.Lock()
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defer sm.mu.Unlock()
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sm.tools = tools
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}
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// RegisterTool registers a tool for subagent execution.
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func (sm *SubagentManager) RegisterTool(tool Tool) {
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sm.mu.Lock()
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defer sm.mu.Unlock()
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sm.tools.Register(tool)
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}
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func (sm *SubagentManager) Spawn(ctx context.Context, task, label, originChannel, originChatID string, callback AsyncCallback) (string, error) {
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sm.mu.Lock()
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defer sm.mu.Unlock()
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taskID := fmt.Sprintf("subagent-%d", sm.nextID)
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sm.nextID++
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subagentTask := &SubagentTask{
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ID: taskID,
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Task: task,
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Label: label,
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OriginChannel: originChannel,
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OriginChatID: originChatID,
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Status: "running",
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Created: time.Now().UnixMilli(),
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}
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sm.tasks[taskID] = subagentTask
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// Start task in background with context cancellation support
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go sm.runTask(ctx, subagentTask, callback)
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if label != "" {
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return fmt.Sprintf("Spawned subagent '%s' for task: %s", label, task), nil
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}
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return fmt.Sprintf("Spawned subagent for task: %s", task), nil
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}
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func (sm *SubagentManager) runTask(ctx context.Context, task *SubagentTask, callback AsyncCallback) {
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task.Status = "running"
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task.Created = time.Now().UnixMilli()
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// Build system prompt for subagent
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systemPrompt := `You are a subagent. Complete the given task independently and report the result.
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You have access to tools - use them as needed to complete your task.
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After completing the task, provide a clear summary of what was done.`
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messages := []providers.Message{
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{
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Role: "system",
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Content: systemPrompt,
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},
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{
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Role: "user",
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Content: task.Task,
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},
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}
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// Check if context is already cancelled before starting
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select {
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case <-ctx.Done():
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sm.mu.Lock()
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task.Status = "cancelled"
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task.Result = "Task cancelled before execution"
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sm.mu.Unlock()
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return
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default:
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}
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// Run tool loop with access to tools
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sm.mu.RLock()
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tools := sm.tools
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maxIter := sm.maxIterations
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sm.mu.RUnlock()
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loopResult, err := RunToolLoop(ctx, ToolLoopConfig{
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Provider: sm.provider,
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Model: sm.defaultModel,
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Tools: tools,
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MaxIterations: maxIter,
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LLMOptions: map[string]any{
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"max_tokens": 4096,
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"temperature": 0.7,
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},
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}, messages, task.OriginChannel, task.OriginChatID)
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sm.mu.Lock()
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var result *ToolResult
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defer func() {
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sm.mu.Unlock()
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// Call callback if provided and result is set
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if callback != nil && result != nil {
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callback(ctx, result)
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}
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}()
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if err != nil {
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task.Status = "failed"
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task.Result = fmt.Sprintf("Error: %v", err)
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// Check if it was cancelled
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if ctx.Err() != nil {
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task.Status = "cancelled"
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task.Result = "Task cancelled during execution"
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}
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result = &ToolResult{
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ForLLM: task.Result,
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ForUser: "",
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Silent: false,
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IsError: true,
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Async: false,
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Err: err,
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}
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} else {
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task.Status = "completed"
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task.Result = loopResult.Content
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result = &ToolResult{
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ForLLM: fmt.Sprintf("Subagent '%s' completed (iterations: %d): %s", task.Label, loopResult.Iterations, loopResult.Content),
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ForUser: loopResult.Content,
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Silent: false,
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IsError: false,
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Async: false,
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}
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}
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// Send announce message back to main agent
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if sm.bus != nil {
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announceContent := fmt.Sprintf("Task '%s' completed.\n\nResult:\n%s", task.Label, task.Result)
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sm.bus.PublishInbound(bus.InboundMessage{
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Channel: "system",
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SenderID: fmt.Sprintf("subagent:%s", task.ID),
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// Format: "original_channel:original_chat_id" for routing back
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ChatID: fmt.Sprintf("%s:%s", task.OriginChannel, task.OriginChatID),
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Content: announceContent,
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})
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}
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}
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func (sm *SubagentManager) GetTask(taskID string) (*SubagentTask, bool) {
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sm.mu.RLock()
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defer sm.mu.RUnlock()
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task, ok := sm.tasks[taskID]
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return task, ok
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}
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func (sm *SubagentManager) ListTasks() []*SubagentTask {
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sm.mu.RLock()
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defer sm.mu.RUnlock()
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tasks := make([]*SubagentTask, 0, len(sm.tasks))
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for _, task := range sm.tasks {
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tasks = append(tasks, task)
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}
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return tasks
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}
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// SubagentTool executes a subagent task synchronously and returns the result.
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// Unlike SpawnTool which runs tasks asynchronously, SubagentTool waits for completion
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// and returns the result directly in the ToolResult.
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type SubagentTool struct {
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manager *SubagentManager
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originChannel string
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originChatID string
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}
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func NewSubagentTool(manager *SubagentManager) *SubagentTool {
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return &SubagentTool{
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manager: manager,
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originChannel: "cli",
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originChatID: "direct",
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}
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}
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func (t *SubagentTool) Name() string {
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return "subagent"
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}
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func (t *SubagentTool) Description() string {
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return "Execute a subagent task synchronously and return the result. Use this for delegating specific tasks to an independent agent instance. Returns execution summary to user and full details to LLM."
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}
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func (t *SubagentTool) Parameters() map[string]interface{} {
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return map[string]interface{}{
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"type": "object",
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"properties": map[string]interface{}{
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"task": map[string]interface{}{
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"type": "string",
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"description": "The task for subagent to complete",
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},
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"label": map[string]interface{}{
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"type": "string",
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"description": "Optional short label for the task (for display)",
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},
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},
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"required": []string{"task"},
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}
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}
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func (t *SubagentTool) SetContext(channel, chatID string) {
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t.originChannel = channel
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t.originChatID = chatID
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}
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func (t *SubagentTool) Execute(ctx context.Context, args map[string]interface{}) *ToolResult {
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task, ok := args["task"].(string)
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if !ok {
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return ErrorResult("task is required").WithError(fmt.Errorf("task parameter is required"))
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}
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label, _ := args["label"].(string)
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if t.manager == nil {
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return ErrorResult("Subagent manager not configured").WithError(fmt.Errorf("manager is nil"))
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}
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// Build messages for subagent
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messages := []providers.Message{
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{
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Role: "system",
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Content: "You are a subagent. Complete the given task independently and provide a clear, concise result.",
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},
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{
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Role: "user",
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Content: task,
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},
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}
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// Use RunToolLoop to execute with tools (same as async SpawnTool)
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sm := t.manager
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sm.mu.RLock()
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tools := sm.tools
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maxIter := sm.maxIterations
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sm.mu.RUnlock()
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loopResult, err := RunToolLoop(ctx, ToolLoopConfig{
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Provider: sm.provider,
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Model: sm.defaultModel,
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Tools: tools,
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MaxIterations: maxIter,
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LLMOptions: map[string]any{
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"max_tokens": 4096,
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"temperature": 0.7,
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},
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}, messages, t.originChannel, t.originChatID)
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if err != nil {
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return ErrorResult(fmt.Sprintf("Subagent execution failed: %v", err)).WithError(err)
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}
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// ForUser: Brief summary for user (truncated if too long)
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userContent := loopResult.Content
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maxUserLen := 500
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if len(userContent) > maxUserLen {
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userContent = userContent[:maxUserLen] + "..."
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}
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// ForLLM: Full execution details
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labelStr := label
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if labelStr == "" {
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labelStr = "(unnamed)"
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}
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llmContent := fmt.Sprintf("Subagent task completed:\nLabel: %s\nIterations: %d\nResult: %s",
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labelStr, loopResult.Iterations, loopResult.Content)
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return &ToolResult{
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ForLLM: llmContent,
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ForUser: userContent,
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Silent: false,
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IsError: false,
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Async: false,
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}
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}
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