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[onechat] / turn.go

diff --git a/turn.go b/turn.go
index 1593f434be72635911ef72958a43d960fc3fa7f1..93052e2d28d527c55d3827d0b557d13af1fd461d 100644 (file)
--- a/turn.go
+++ b/turn.go
@@ -2,21 +2,17 @@ package main
 
 import (
        "context"
 
 import (
        "context"

-       "encoding/json"

        "errors"
        "fmt"
        "path/filepath"
        "errors"
        "fmt"
        "path/filepath"

-       "strings"

        "sync"
        "time"
 )
 
        "sync"
        "time"
 )
 

-// errTurnLogWrite marks an error of a log write, which ends the loop.
-var errTurnLogWrite = errors.New("log write failed")
-
-// newTurnLoop returns the loop of agent with its memory. Its calls go through
-// client, and notify gets each event. The clock gives the date of a turn.
-func newTurnLoop(agent *Agent, memory *Memory, client TurnClient, clock func() time.Time, notify func(Event)) (*TurnLoop, error) {
+// newTurnLoop returns the loop of agent with its memory and its subagents. Its
+// calls go through client, and notify gets each event. The clock gives the date
+// of a turn.
+func newTurnLoop(agent *Agent, memory *Memory, subagents *Subagents, client ChainClient, clock func() time.Time, notify func(Event)) (*TurnLoop, error) {

        layout, err := loadViewLayout(filepath.Join(agent.dir, viewLayoutFileName))
        if err != nil {
                return nil, err
        layout, err := loadViewLayout(filepath.Join(agent.dir, viewLayoutFileName))
        if err != nil {
                return nil, err


@@ -32,53 +28,62 @@ func newTurnLoop(agent *Agent, memory *Memory, client TurnClient, clock func() t
                wake:   make(chan struct{}, 1),
        }
 
                wake:   make(chan struct{}, 1),
        }
 

-       l.tools = &toolbox{
-               log:     l,
-               chat:    memory,
-               workdir: agent.config.Workdir,
+       l.runs = &SubagentRuns{
+               agent:     agent,
+               memory:    memory,
+               subagents: subagents,
+               layout:    layout,
+               client:    client,
+               state:     l.state,
+               report:    l.Report,
+               note:      l.note,
+               fail:      l.fail,
+               notify:    notify,
+               running:   make(map[string]*SubagentRun),

        }
 
        }
 

-       return l, nil
-}
+       l.tools = &Toolbox{
+               log:       l,
+               chat:      memory,
+               subagents: subagents,
+               runs:      l.runs,
+               workdir:   agent.config.Workdir,
+       }

 
 

-// TurnClient sends model calls.
-type TurnClient interface {
-       Create(ctx context.Context, request ModelRequest) (ModelResponse, error)
+       return l, nil

 }
 
 // Event tells the clients what the agent does as it happens. Kind is the kind
 }
 
 // Event tells the clients what the agent does as it happens. Kind is the kind

-// of a logged message (user, reply, tool, echo), or one of ready, busy, idle,
-// and error. ID is the ID of a logged message. Source names the client that
-// sent a user message, such as terminal or telegram, so that each client can
-// show the messages of the others.
+// of a logged message (user, reply, tool, echo, note, work), or one of ready,
+// busy, idle, error, and subagent, which tells that the subagent Text starts a
+// run. ID is the ID of a logged message. Source names the client that sent a
+// user message, such as terminal or telegram, so that each client can show the
+// messages of the others, or the subagent of a report. Status tells how the run
+// of a report ended: finished, stopped, or failed.

 type Event struct {
        Kind   string `json:"kind"`
        ID     int    `json:"id,omitempty"`
        Text   string `json:"text,omitempty"`
        Source string `json:"source,omitempty"`
 type Event struct {
        Kind   string `json:"kind"`
        ID     int    `json:"id,omitempty"`
        Text   string `json:"text,omitempty"`
        Source string `json:"source,omitempty"`

+       Status string `json:"status,omitempty"`

 }
 
 // TurnLoop runs the turns of one agent. A user message goes to the log when it
 // comes, and it wakes the loop. A turn waits until every message before it is
 }
 
 // TurnLoop runs the turns of one agent. A user message goes to the log when it
 // comes, and it wakes the loop. A turn waits until every message before it is

-// summarized. Then its first request holds the prompt, the tools, and the input
-// of turnInput. The loop runs the tool calls of each response and sends their
-// results back, until a response has no tool call: the final answer.
+// summarized. Then the turn runs a Chain whose first request holds the prompt,
+// the tools, and the input of turnInput.

 //
 // The view goes out as the messages of a ViewLayout, so the first request of a
 //
 // The view goes out as the messages of a ViewLayout, so the first request of a

-// turn reads the view of the turn before from the prompt cache.
-//
-// Each later request of a turn begins with the whole input of the request
-// before it, then its output items, then the tool results. The output items
-// hold the reasoning with its encrypted content, because the calls do not
-// store it. So each request begins with all of the previous one and reads it
-// from the prompt cache. User messages that come during a turn join the next
-// request after the tool results. The replies, the tool calls, and the results
-// go to the log as they happen. The thoughts never do.
+// turn reads the view of the turn before from the prompt cache. User messages
+// that come during a turn join the next request of its chain after the tool
+// results, and so do the reports of the subagents. The subagents run until the
+// loop ends.

 type TurnLoop struct {
        agent  *Agent
        memory *Memory
 type TurnLoop struct {
        agent  *Agent
        memory *Memory

-       client TurnClient
-       tools  *toolbox
+       client ChainClient
+       tools  *Toolbox
+       runs   *SubagentRuns

        layout *ViewLayout
        clock  func() time.Time
        notify func(Event)
        layout *ViewLayout
        clock  func() time.Time
        notify func(Event)


@@ -87,6 +92,7 @@ type TurnLoop struct {
        mutex   sync.Mutex
        pending []Message
        cancel  context.CancelFunc
        mutex   sync.Mutex
        pending []Message
        cancel  context.CancelFunc

+       failure error

 }
 
 // Submit logs a user message from the client source and wakes the loop. The
 }
 
 // Submit logs a user message from the client source and wakes the loop. The


@@ -110,6 +116,44 @@ func (l *TurnLoop) Submit(source, text string) (Message, error) {
        return message, nil
 }
 
        return message, nil
 }
 

+// Report logs the report text of the subagent name as a work message and tells
+// the clients, with the status of the run. Unless the subagent was stopped, the
+// report joins the waiting messages and wakes the loop, as a user message of
+// Submit does. A failed write stops the loop, because the log refuses all
+// writes after it.
+func (l *TurnLoop) Report(name, text, status string) {
+       message, err := l.memory.Append("work", text)
+       if err == nil {
+               l.notify(Event{
+                       Kind:   "work",
+                       ID:     message.ID,
+                       Text:   text,
+                       Source: name,
+                       Status: status,
+               })
+       }
+
+       l.mutex.Lock()
+       switch {
+       case err != nil:
+               l.failure = fmt.Errorf("%w: %w", errChainLogWrite, err)
+       case status != subagentStopped:
+               l.pending = append(l.pending, message)
+       }
+       l.mutex.Unlock()
+
+       select {
+       case l.wake <- struct{}{}:
+       default:
+       }
+}
+
+// StopSubagent ends the run of the subagent name and tells if it ran. Its
+// report is logged, but it starts no turn.
+func (l *TurnLoop) StopSubagent(name string) (bool, error) {
+       return l.runs.Stop(name)
+}
+

 // Interrupt ends the running turn. A running tool is killed, and the turn sends
 // no further request.
 func (l *TurnLoop) Interrupt() bool {
 // Interrupt ends the running turn. A running tool is killed, and the turn sends
 // no further request.
 func (l *TurnLoop) Interrupt() bool {


@@ -144,9 +188,18 @@ func (l *TurnLoop) Flush(ctx context.Context) error {
        return l.memory.Flush(ctx)
 }
 
        return l.memory.Flush(ctx)
 }
 

-// Run runs a turn each time user messages wait, until ctx ends. It returns the
-// error of a failed log write, which stops the agent.
+// Run runs a turn each time user messages or reports wait, until ctx ends. It
+// returns the error of a failed log write, which stops the agent. At its start
+// it resumes the subagents that a stop of the daemon cut, and at its end it
+// ends the runs of the subagents and waits for them.

 func (l *TurnLoop) Run(ctx context.Context) error {
 func (l *TurnLoop) Run(ctx context.Context) error {

+       defer l.runs.Close()
+
+       err := l.runs.Resume(ctx)
+       if err != nil {
+               return fmt.Errorf("resume subagents: %w", err)
+       }
+

        for {
                for l.waiting() {
                        err := l.turn(ctx)
        for {
                for l.waiting() {
                        err := l.turn(ctx)


@@ -160,9 +213,21 @@ func (l *TurnLoop) Run(ctx context.Context) error {
                case <-ctx.Done():
                        return ctx.Err()
                }
                case <-ctx.Done():
                        return ctx.Err()
                }

+
+               err := l.failed()
+               if err != nil {
+                       return err
+               }

        }
 }
 
        }
 }
 

+// note logs a note and tells the clients. A note starts no turn.
+func (l *TurnLoop) note(text string) error {
+       _, err := l.record("note", "", text)
+
+       return err
+}
+

 // record logs a message and tells the clients, with the client source of a user
 // message.
 func (l *TurnLoop) record(kind, source, text string) (Message, error) {
 // record logs a message and tells the clients, with the client source of a user
 // message.
 func (l *TurnLoop) record(kind, source, text string) (Message, error) {


@@ -181,7 +246,7 @@ func (l *TurnLoop) record(kind, source, text string) (Message, error) {
        return message, nil
 }
 
        return message, nil
 }
 

-// waiting tells if user messages wait for a request.
+// waiting tells if user messages or reports wait for a request.

 func (l *TurnLoop) waiting() bool {
        l.mutex.Lock()
        defer l.mutex.Unlock()
 func (l *TurnLoop) waiting() bool {
        l.mutex.Lock()
        defer l.mutex.Unlock()


@@ -189,6 +254,26 @@ func (l *TurnLoop) waiting() bool {
        return len(l.pending) > 0
 }
 
        return len(l.pending) > 0
 }
 

+// fail stops the loop with err.
+func (l *TurnLoop) fail(err error) {
+       l.mutex.Lock()
+       l.failure = errors.Join(l.failure, err)
+       l.mutex.Unlock()
+
+       select {
+       case l.wake <- struct{}{}:
+       default:
+       }
+}
+
+// failed returns the error of a failed write of a report.
+func (l *TurnLoop) failed() error {
+       l.mutex.Lock()
+       defer l.mutex.Unlock()
+
+       return l.failure
+}
+

 // turn runs one turn. A failed or interrupted model call ends the turn and
 // tells the clients. The messages of the turn stay in the log and the view, and
 // the next turn starts only with a new message, so a lasting failure such as a
 // turn runs one turn. A failed or interrupted model call ends the turn and
 // tells the clients. The messages of the turn stay in the log and the view, and
 // the next turn starts only with a new message, so a lasting failure such as a


@@ -212,7 +297,7 @@ func (l *TurnLoop) turn(ctx context.Context) error {
        })
 
        err := l.chain(ctx)
        })
 
        err := l.chain(ctx)

-       if err != nil && !errors.Is(err, errTurnLogWrite) {
+       if err != nil && !errors.Is(err, errChainLogWrite) {

                l.notify(Event{
                        Kind: "error",
                        Text: turnError(ctx, err),
                l.notify(Event{
                        Kind: "error",
                        Text: turnError(ctx, err),


@@ -255,29 +340,21 @@ func (l *TurnLoop) chain(ctx context.Context) error {
                return err
        }
 
                return err
        }
 

-       input := turnInput(view, l.state(), messages)
-       for turn := "first"; ; turn = "next" {
-               response, err := l.client.Create(ctx, ModelRequest{
+       chain := &Chain{
+               client: l.client,
+               tools:  l.tools,
+               request: ModelRequest{

                        Model:        l.agent.config.Model,
                        Effort:       l.agent.config.Effort,
                        Instructions: instructions,
                        Model:        l.agent.config.Model,
                        Effort:       l.agent.config.Effort,
                        Instructions: instructions,

-                       Tools:        agentTools(),
-                       Input:        input,
-                       Turn:         turn,
-               })
-               if err != nil {
-                       return err
-               }
+                       Tools:        promptTools(),
+               },
+               take: l.take,
+       }

 
 

-               input, err = l.handle(ctx, input, response)
-               if err != nil {
-                       return err
-               }
+       _, err = chain.Run(ctx, turnInput(view, l.state(), messages))

 
 

-               if len(input) == 0 {
-                       return nil
-               }
-       }
+       return err

 }
 
 // take returns the user messages that wait for a request, and removes them.
 }
 
 // take returns the user messages that wait for a request, and removes them.


@@ -297,83 +374,6 @@ func (l *TurnLoop) state() string {
        return "</chat>\n\nNow: " + l.clock().Format("Monday 2006-01-02 15:04 -07:00")
 }
 
        return "</chat>\n\nNow: " + l.clock().Format("Monday 2006-01-02 15:04 -07:00")
 }
 

-// handle logs the replies of response and runs its tool calls. It returns the
-// input of the next request: input, the output items, the tool results, and
-// the user messages that came in the meantime. After the final answer it
-// returns no input.
-func (l *TurnLoop) handle(ctx context.Context, input []any, response ModelResponse) ([]any, error) {
-       var outputs []any
-       for _, raw := range response.Output {
-               item, err := turnInputItem(raw)
-               if err != nil {
-                       return nil, err
-               }
-
-               input = append(input, item)
-
-               var call TurnFunctionCall
-               err = json.Unmarshal(raw, &call)
-               if err != nil {
-                       return nil, fmt.Errorf("decode output item: %w", err)
-               }
-
-               switch call.Type {
-               case "message":
-                       text, err := modelOutputText([]json.RawMessage{raw})
-                       if err != nil {
-                               return nil, err
-                       }
-
-                       text = strings.TrimSpace(text)
-                       if text == "" {
-                               continue
-                       }
-
-                       _, err = l.Append("reply", text)
-                       if err != nil {
-                               return nil, fmt.Errorf("%w: %w", errTurnLogWrite, err)
-                       }
-               case "function_call":
-                       output, err := l.tools.Call(ctx, call.Name, call.Arguments)
-                       if err != nil {
-                               return nil, fmt.Errorf("%w: %w", errTurnLogWrite, err)
-                       }
-
-                       outputs = append(outputs, TurnFunctionCallOutput{
-                               Type:   "function_call_output",
-                               CallID: call.CallID,
-                               Output: output,
-                       })
-               }
-       }
-
-       if len(outputs) == 0 {
-               return nil, nil
-       }
-
-       input = append(input, outputs...)
-       for _, message := range l.take() {
-               input = append(input, modelUserMessage(message.Text))
-       }
-
-       return input, nil
-}
-
-// TurnFunctionCall holds the fields of a function call output item.
-type TurnFunctionCall struct {
-       Type      string `json:"type"`
-       Name      string `json:"name"`
-       Arguments string `json:"arguments"`
-       CallID    string `json:"call_id"`
-}
-
-// TurnFunctionCallOutput is the input item with the result of a function call.
-type TurnFunctionCallOutput struct {
-       Type   string `json:"type"`
-       CallID string `json:"call_id"`
-       Output string `json:"output"`
-}
-

 // turnError returns the text of the error that ended a turn.
 func turnError(ctx context.Context, err error) string {
        if ctx.Err() != nil {
 // turnError returns the text of the error that ended a turn.
 func turnError(ctx context.Context, err error) string {
        if ctx.Err() != nil {


@@ -400,18 +400,3 @@ func turnInput(view []string, state string, messages []Message) []any {
 
        return input
 }
 
        return input
 }

-
-// turnInputItem returns an output item as an input item for the next request.
-// The calls do not store their items, so the item goes back whole, without its
-// id.
-func turnInputItem(raw json.RawMessage) (map[string]any, error) {
-       var item map[string]any
-       err := json.Unmarshal(raw, &item)
-       if err != nil {
-               return nil, fmt.Errorf("decode output item: %w", err)
-       }
-
-       delete(item, "id")
-
-       return item, nil
-}