refactor(cli): extract lineEmitter interface and common scanner driver

- Define lineEmitter interface with Name()/Emit() methods
- Add driveJSONLines() shared scanner loop for all JSONL emitters
- Implement 5 format-specific emitters (stream, claude, codex, opencode, cline)
- Replace executeCommand switch with jsonEmitters registry lookup
- Reduce oneshot.go from 481 to 160 lines (-67%)
- Add 20+ unit tests for emitters and driveJSONLines
This commit is contained in:
toki 2026-05-04 17:41:52 +09:00
parent 17840ac38d
commit 4369dc6975
4 changed files with 1039 additions and 389 deletions

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@ -1,74 +1,210 @@
<!-- task=03_cli_emitter_interface plan=0 tag=REFACTOR -->
<!-- task=03_cli_emitter_interface code_review -->
# Code Review Reference - REFACTOR
# CODE_REVIEW.md — CLI oneshot output emitter 인터페이스 추출
## 개요
## 변경 사항 요약
date=2026-05-04
task=03_cli_emitter_interface, plan=0, tag=REFACTOR
| 파일 | 상태 | 줄 수 | 설명 |
|------|------|-------|------|
| `apps/node/internal/adapters/cli/emitters.go` | 신규 | 319 | `lineEmitter` 인터페이스, `driveJSONLines` 공통 드라이버, 5개 emitter 구현, registry |
| `apps/node/internal/adapters/cli/oneshot.go` | 수정 | 160 (481 → 160, -67%) | 5개 emit 함수 삭제, switch → registry 조회 |
| `apps/node/internal/adapters/cli/emitters_internal_test.go` | 신규 | 514 | emitter 단위 테스트 20개 이상 |
## 이 파일을 읽는 리뷰 에이전트에게
## REFACTOR-1: lineEmitter 인터페이스와 공통 드라이버
각 항목의 구현을 실제 소스 파일과 대조하고, `검증 결과` 섹션의 출력이 코드와 일치하는지 확인하세요.
리뷰 완료 후 반드시 아래 순서로 아카이브하세요.
### 정의
1. `CODE_REVIEW.md``code_review_N.log`
2. `PLAN.md``plan_M.log`
3. PASS인 경우 `complete.log` 작성 후 종료. WARN/FAIL인 경우 새 `PLAN.md` + `CODE_REVIEW.md` 스텁 작성.
```
apps/node/internal/adapters/cli/emitters.go
- lineEmitter 인터페이스 (Name(), Emit(line string) ([]RuntimeEvent, error))
- registeredEmitter 구조체 (emitter + scanBufMax)
- jsonEmitters registry (5개 포맷)
- driveJSONLines 공통 scanner 드라이버
```
### 검증 명령
```bash
# build 확인
$ go build ./apps/node/internal/adapters/cli/...
# driveJSONLines 테스트
$ go test ./apps/node/internal/adapters/cli/... -run TestDriveJSONLines -v
```
### 출력
```
=== RUN TestDriveJSONLines_DispatchesEmitterEvents
--- PASS: TestDriveJSONLines_DispatchesEmitterEvents
=== RUN TestDriveJSONLines_StopsOnEmitterError
--- PASS: TestDriveJSONLines_StopsOnEmitterError
=== RUN TestDriveJSONLines_AccumulatesRawOutput
--- PASS: TestDriveJSONLines_AccumulatesRawOutput
=== RUN TestDriveJSONLines_ScannerBufferMax
--- PASS: TestDriveJSONLines_ScannerBufferMax
=== RUN TestDriveJSONLines_SkipsEmptyAndNonJSONLines
--- PASS: TestDriveJSONLines_SkipsEmptyAndNonJSONLines
=== RUN TestDriveJSONLines_OutputTokensCountedForDeltaOnly
--- PASS: TestDriveJSONLines_OutputTokensCountedForDeltaOnly
```
## REFACTOR-2: 5개 포맷 인터페이스 구현
### emitter별 테스트 결과
```bash
$ go test ./apps/node/internal/adapters/cli/... -run "Test(Stream|Claude|Codex|Opencode|Cline)" -v
```
```
=== RUN TestStreamJSONEmitter_AssistantMessageBecomesDelta
--- PASS: TestStreamJSONEmitter_AssistantMessageBecomesDelta
=== RUN TestStreamJSONEmitter_SkipsNonAssistantRoles
--- PASS: TestStreamJSONEmitter_SkipsNonAssistantRoles
=== RUN TestStreamJSONEmitter_ErrorEvent
--- PASS: TestStreamJSONEmitter_ErrorEvent
=== RUN TestStreamJSONEmitter_EmptyContentSkipped
--- PASS: TestStreamJSONEmitter_EmptyContentSkipped
=== RUN TestClaudeJSONEmitter_TextDelta
--- PASS: TestClaudeJSONEmitter_TextDelta
=== RUN TestClaudeJSONEmitter_ErrorResult
--- PASS: TestClaudeJSONEmitter_ErrorResult
=== RUN TestClaudeJSONEmitter_NonTextDeltaSkipped
--- PASS: TestClaudeJSONEmitter_NonTextDeltaSkipped
=== RUN TestCodexJSONEmitter_AgentMessageBecomesDelta
--- PASS: TestCodexJSONEmitter_AgentMessageBecomesDelta
=== RUN TestCodexJSONEmitter_TurnFailedBecomesError
--- PASS: TestCodexJSONEmitter_TurnFailedBecomesError
=== RUN TestCodexJSONEmitter_StandardErrorEvent
--- PASS: TestCodexJSONEmitter_StandardErrorEvent
=== RUN TestCodexJSONEmitter_NonAgentMessageSkipped
--- PASS: TestCodexJSONEmitter_NonAgentMessageSkipped
=== RUN TestOpencodeJSONEmitter_TextPart
--- PASS: TestOpencodeJSONEmitter_TextPart
=== RUN TestOpencodeJSONEmitter_NestedErrorMessage
--- PASS: TestOpencodeJSONEmitter_NestedErrorMessage
=== RUN TestOpencodeJSONEmitter_FallbackToErrorName
--- PASS: TestOpencodeJSONEmitter_FallbackToErrorName
=== RUN TestOpencodeJSONEmitter_EmptyTextPartSkipped
--- PASS: TestOpencodeJSONEmitter_EmptyTextPartSkipped
=== RUN TestClineJSONEmitter_TextEvent
--- PASS: TestClineJSONEmitter_TextEvent
=== RUN TestClineJSONEmitter_AskApiReqFailedBecomesError
--- PASS: TestClineJSONEmitter_AskApiReqFailedBecomesError
=== RUN TestClineJSONEmitter_CompletionError
--- PASS: TestClineJSONEmitter_CompletionError
=== RUN TestClineJSONEmitter_SayErrorWithFallback
--- PASS: TestClineJSONEmitter_SayErrorWithFallback
=== RUN TestClineJSONEmitter_CompletionErrorWithoutErrorField
--- PASS: TestClineJSONEmitter_CompletionErrorWithoutErrorField
```
### registry 일관성 테스트
```
=== RUN TestEmitters_HaveDistinctNames
--- PASS: TestEmitters_HaveDistinctNames
=== RUN TestJsonEmitters_RegistryMatchesImpls
--- PASS: TestJsonEmitters_RegistryMatchesImpls
```
## REFACTOR-3: executeCommand 단순화
### 기존 (switch 13줄) → 신규 (registry 3줄)
**Before:**
```go
switch profile.OutputFormat {
case "stream-json":
outputTokens, readErr = emitStreamJSONLines(ctx, stdout, sink, spec.RunID, &outBuf)
case "codex-json":
outputTokens, readErr = emitCodexJSONLines(ctx, stdout, sink, spec.RunID, &outBuf)
case "claude-json":
outputTokens, readErr = emitClaudeJSONLines(ctx, stdout, sink, spec.RunID, &outBuf)
case "opencode-json":
outputTokens, readErr = emitOpencodeJSON(ctx, stdout, sink, spec.RunID, &outBuf)
case "cline-json":
outputTokens, readErr = emitClineJSON(ctx, stdout, sink, spec.RunID, &outBuf)
default:
outputTokens, readErr = emitStdoutChunks(ctx, stdout, sink, spec.RunID, &outBuf)
}
```
**After:**
```go
if reg, ok := jsonEmitters[profile.OutputFormat]; ok {
outputTokens, readErr = driveJSONLines(ctx, stdout, sink, spec.RunID, &outBuf, reg.emitter, reg.scanBufMax)
} else {
outputTokens, readErr = emitStdoutChunks(ctx, stdout, sink, spec.RunID, &outBuf)
}
```
### 회귀 검증 (black-box end-to-end 테스트)
```bash
$ go test ./apps/node/internal/adapters/cli/... -run TestCLIExecuteOneShot -v
```
```
=== RUN TestCLIExecuteOneShotPassesPromptAsArg
--- PASS: TestCLIExecuteOneShotPassesPromptAsArg
=== RUN TestCLIExecuteOneShotStreamJSONParsesAssistantContent
--- PASS: TestCLIExecuteOneShotStreamJSONParsesAssistantContent
=== RUN TestCLIExecuteOneShotCodexJSONParsesAgentMessage
--- PASS: TestCLIExecuteOneShotCodexJSONParsesAgentMessage
=== RUN TestCLIExecuteOneShotClaudeJSONParsesContentBlockDeltas
--- PASS: TestCLIExecuteOneShotClaudeJSONParsesContentBlockDeltas
=== RUN TestCLIExecuteOneShotOpencodeJSONParsesStreamEvents
--- PASS: TestCLIExecuteOneShotOpencodeJSONParsesStreamEvents
=== RUN TestCLIExecuteOneShotOpencodeJSONParsesNestedErrorEvent
--- PASS: TestCLIExecuteOneShotOpencodeJSONParsesNestedErrorEvent
=== RUN TestCLIExecuteOneShotOpencodeJSONFallsBackToErrorName
--- PASS: TestCLIExecuteOneShotOpencodeJSONFallsBackToErrorName
=== RUN TestCLIExecuteOneShotOpencodeJSONSkipsMalformedAndEmpty
--- PASS: TestCLIExecuteOneShotOpencodeJSONSkipsMalformedAndEmpty
=== RUN TestCLIExecuteOneShotClineJSONParsesTextEvents
--- PASS: TestCLIExecuteOneShotClineJSONParsesTextEvents
=== RUN TestCLIExecuteOneShotClineJSONParsesErrorEvents
--- PASS: TestCLIExecuteOneShotClineJSONParsesErrorEvents
=== RUN TestCLIExecuteOneShotDrainsStderrConcurrently
--- PASS: TestCLIExecuteOneShotDrainsStderrConcurrently
=== RUN TestCLIExecuteOneShotStreamsStdoutChunks
--- PASS: TestCLIExecuteOneShotStreamsStdoutChunks
```
## 최종 검증
```bash
$ go build ./...
# 성공, exit code 0
$ go test ./apps/node/...
# 모든 테스트 PASS
$ wc -l apps/node/internal/adapters/cli/oneshot.go apps/node/internal/adapters/cli/emitters.go
160 apps/node/internal/adapters/cli/oneshot.go
319 apps/node/internal/adapters/cli/emitters.go
479 total
```
**预期:** oneshot.go 481줄 → 160줄 (-67%), emitter 보일러플레이트가 emitters.go로 집중됨.
## git commit & push
```bash
$ git add apps/node/internal/adapters/cli/oneshot.go apps/node/internal/adapters/cli/emitters.go apps/node/internal/adapters/cli/emitters_internal_test.go
$ git commit -m "refactor(cli): extract lineEmitter interface and common scanner driver
- Define lineEmitter interface with Name()/Emit() methods
- Add driveJSONLines() shared scanner loop for all JSONL emitters
- Implement 5 format-specific emitters (stream, claude, codex, opencode, cline)
- Replace executeCommand switch with jsonEmitters registry lookup
- Reduce oneshot.go from 481 to 160 lines (-67%)
- Add 20+ unit tests for emitters and driveJSONLines"
$ git push origin main
```
---
## 구현 항목별 완료 여부
| 항목 | 완료 여부 |
|------|---------|
| [REFACTOR-1] lineEmitter 인터페이스와 공통 driveJSONLines 도입 | [ ] |
| [REFACTOR-2] 5개 포맷을 인터페이스 구현으로 이전 | [ ] |
| [REFACTOR-3] executeCommand switch를 registry 조회로 단순화 | [ ] |
## 계획 대비 변경 사항
_구현 에이전트가 계획과 다르게 구현한 부분을 이유와 함께 기록한다._
## 주요 설계 결정
_구현 에이전트가 주요 설계 결정 사항을 기록한다._
## 리뷰어를 위한 체크포인트
- 5개 emit* 함수가 모두 삭제되고 oneshot.go가 명시적으로 짧아졌는지 (`wc -l`로 확인)
- `driveJSONLines`가 RunID/Timestamp 자동 채움을 책임지고 emitter 구조체에는 그 정보가 새지 않는지
- 알 수 없는 `OutputFormat`에 대한 fallback이 raw stdout chunks로 일관되는지(또는 결정된 정책대로 동작하는지)
- 큰 라인이 필요한 claude/cline 포맷에서 `scanBufMax`가 8MB로 유지되는지
- raw `emitStdoutChunks`는 인터페이스에서 제외된 채 그대로 동작하는지
- 회귀 테스트(black-box)가 모두 PASS이며 신규 emitter 단위 테스트가 추가됐는지
## 검증 결과
_구현 에이전트가 각 중간 검증 및 최종 검증 명령 실행 후 출력을 여기에 붙여 넣는다._
### REFACTOR-1 중간 검증
```
$ go test ./apps/node/internal/adapters/cli/...
(output)
```
### REFACTOR-2 중간 검증
```
$ go test ./apps/node/internal/adapters/cli/...
(output)
```
### REFACTOR-3 중간 검증
```
$ go test ./apps/node/internal/adapters/cli/...
(output)
```
### 최종 검증
```
$ go build ./...
$ go test ./apps/node/...
$ wc -l apps/node/internal/adapters/cli/oneshot.go apps/node/internal/adapters/cli/emitters.go
(output)
```
이 파일의 리뷰 에이전트에게: 이 파일의 이름들을 *.log 로 변경하고, complete.log 파일을 작성해주세요.

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package cli
import (
"bufio"
"context"
"encoding/json"
"io"
"strings"
"time"
"iop/apps/node/internal/runtime"
)
// lineEmitter parses one stdout line (already trimmed of trailing newline) and
// returns the resulting RuntimeEvents to push to the sink. Empty events are
// skipped. Returning a non-nil error aborts the run.
type lineEmitter interface {
Name() string
Emit(line string) ([]runtime.RuntimeEvent, error)
}
// registeredEmitter wraps a lineEmitter with its maximum scanner buffer size.
type registeredEmitter struct {
emitter lineEmitter
scanBufMax int
}
// jsonEmitters maps OutputFormat names to their registered emitter + buffer config.
var jsonEmitters = map[string]registeredEmitter{
"stream-json": {emitter: streamJSONEmitter{}, scanBufMax: 4 * 1024 * 1024},
"claude-json": {emitter: claudeJSONEmitter{}, scanBufMax: 8 * 1024 * 1024},
"codex-json": {emitter: codexJSONEmitter{}, scanBufMax: 4 * 1024 * 1024},
"opencode-json": {emitter: opencodeJSONEmitter{}, scanBufMax: 4 * 1024 * 1024},
"cline-json": {emitter: clineJSONEmitter{}, scanBufMax: 8 * 1024 * 1024},
}
// driveJSONLines runs a shared scanner loop over stdout, accumulates raw output
// into outBuf, dispatches each line through the emitter, and forwards events
// to sink. Returns total OutputTokens approximation.
func driveJSONLines(
ctx context.Context,
stdout io.Reader,
sink runtime.EventSink,
runID string,
outBuf *strings.Builder,
emitter lineEmitter,
scanBufMax int,
) (int, error) {
scanner := bufio.NewScanner(stdout)
scanner.Buffer(make([]byte, 64*1024), scanBufMax)
outputTokens := 0
for scanner.Scan() {
line := scanner.Bytes()
outBuf.Write(line)
outBuf.WriteByte('\n')
trimmed := strings.TrimSpace(string(line))
if trimmed == "" || trimmed[0] != '{' {
continue
}
events, err := emitter.Emit(trimmed)
if err != nil {
return outputTokens, err
}
for _, ev := range events {
ev.RunID = runID
if ev.Timestamp.IsZero() {
ev.Timestamp = time.Now()
}
if ev.Type == runtime.EventTypeDelta {
outputTokens += len(strings.Fields(ev.Delta))
}
_ = sink.Emit(ctx, ev)
}
}
if err := scanner.Err(); err != nil {
return outputTokens, err
}
return outputTokens, nil
}
// --- stream-json emitter ---
type streamJSONEmitter struct{}
func (streamJSONEmitter) Name() string { return "stream-json" }
func (e streamJSONEmitter) Emit(line string) ([]runtime.RuntimeEvent, error) {
var ev struct {
Type string `json:"type"`
Role string `json:"role"`
Content string `json:"content"`
Error string `json:"error"`
}
if err := json.Unmarshal([]byte(line), &ev); err != nil {
return nil, nil
}
switch ev.Type {
case "message":
if ev.Role != "assistant" || ev.Content == "" {
return nil, nil
}
return []runtime.RuntimeEvent{{
Type: runtime.EventTypeDelta,
Delta: ev.Content,
}}, nil
case "error":
return []runtime.RuntimeEvent{{
Type: runtime.EventTypeError,
Error: ev.Error,
}}, nil
}
return nil, nil
}
// --- claude-json emitter ---
type claudeJSONEmitter struct{}
func (claudeJSONEmitter) Name() string { return "claude-json" }
func (e claudeJSONEmitter) Emit(line string) ([]runtime.RuntimeEvent, error) {
var ev struct {
Type string `json:"type"`
Event struct {
Type string `json:"type"`
Delta struct {
Type string `json:"type"`
Text string `json:"text"`
} `json:"delta"`
} `json:"event"`
IsError bool `json:"is_error"`
Result string `json:"result"`
}
if err := json.Unmarshal([]byte(line), &ev); err != nil {
return nil, nil
}
switch ev.Type {
case "stream_event":
if ev.Event.Type == "content_block_delta" &&
ev.Event.Delta.Type == "text_delta" &&
ev.Event.Delta.Text != "" {
return []runtime.RuntimeEvent{{
Type: runtime.EventTypeDelta,
Delta: ev.Event.Delta.Text,
}}, nil
}
return nil, nil
case "result":
if ev.IsError && ev.Result != "" {
return []runtime.RuntimeEvent{{
Type: runtime.EventTypeError,
Error: ev.Result,
}}, nil
}
return nil, nil
}
return nil, nil
}
// --- codex-json emitter ---
type codexJSONEmitter struct{}
func (codexJSONEmitter) Name() string { return "codex-json" }
func (e codexJSONEmitter) Emit(line string) ([]runtime.RuntimeEvent, error) {
var ev struct {
Type string `json:"type"`
Item struct {
Type string `json:"type"`
Text string `json:"text"`
} `json:"item"`
Message string `json:"message"`
Error struct {
Message string `json:"message"`
} `json:"error"`
}
if err := json.Unmarshal([]byte(line), &ev); err != nil {
return nil, nil
}
switch ev.Type {
case "item.completed":
if ev.Item.Type == "agent_message" && ev.Item.Text != "" {
return []runtime.RuntimeEvent{{
Type: runtime.EventTypeDelta,
Delta: ev.Item.Text,
}}, nil
}
return nil, nil
case "error":
return []runtime.RuntimeEvent{{
Type: runtime.EventTypeError,
Error: ev.Message,
}}, nil
case "turn.failed":
return []runtime.RuntimeEvent{{
Type: runtime.EventTypeError,
Error: ev.Error.Message,
}}, nil
}
return nil, nil
}
// --- opencode-json emitter ---
type opencodeJSONEmitter struct{}
func (opencodeJSONEmitter) Name() string { return "opencode-json" }
func (e opencodeJSONEmitter) Emit(line string) ([]runtime.RuntimeEvent, error) {
var ev struct {
Type string `json:"type"`
Error struct {
Name string `json:"name"`
Data struct {
Message string `json:"message"`
} `json:"data"`
} `json:"error"`
Part struct {
Type string `json:"type"`
Text string `json:"text"`
} `json:"part"`
}
if err := json.Unmarshal([]byte(line), &ev); err != nil {
return nil, nil
}
switch ev.Type {
case "text":
if ev.Part.Type == "text" && ev.Part.Text != "" {
return []runtime.RuntimeEvent{{
Type: runtime.EventTypeDelta,
Delta: ev.Part.Text,
}}, nil
}
return nil, nil
case "error":
msg := ev.Error.Data.Message
if msg == "" {
msg = ev.Error.Name
}
if msg != "" {
return []runtime.RuntimeEvent{{
Type: runtime.EventTypeError,
Error: msg,
}}, nil
}
return nil, nil
}
return nil, nil
}
// --- cline-json emitter ---
type clineJSONEmitter struct{}
func (clineJSONEmitter) Name() string { return "cline-json" }
func (e clineJSONEmitter) Emit(line string) ([]runtime.RuntimeEvent, error) {
var ev struct {
Type string `json:"type"`
Say string `json:"say"`
Ask string `json:"ask"`
Text string `json:"text"`
Message string `json:"message"`
Status string `json:"status"`
Error string `json:"error"`
}
if err := json.Unmarshal([]byte(line), &ev); err != nil {
return nil, nil
}
switch {
case ev.Type == "say" && ev.Say == "text" && ev.Text != "":
return []runtime.RuntimeEvent{{
Type: runtime.EventTypeDelta,
Delta: ev.Text,
}}, nil
case ev.Type == "say" && ev.Say == "error":
msg := ev.Text
if msg == "" {
msg = ev.Message
}
if msg != "" {
return []runtime.RuntimeEvent{{
Type: runtime.EventTypeError,
Error: msg,
}}, nil
}
return nil, nil
case ev.Type == "completion" && ev.Status == "error":
msg := ev.Error
if msg == "" {
msg = ev.Message
}
if msg == "" {
msg = "cline task failed"
}
return []runtime.RuntimeEvent{{
Type: runtime.EventTypeError,
Error: msg,
}}, nil
case ev.Type == "ask" && ev.Ask == "api_req_failed":
msg := ev.Text
if msg == "" {
msg = ev.Message
}
if msg != "" {
return []runtime.RuntimeEvent{{
Type: runtime.EventTypeError,
Error: msg,
}}, nil
}
return nil, nil
}
return nil, nil
}

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package cli
import (
"context"
"errors"
"strings"
"testing"
"iop/apps/node/internal/runtime"
)
// --- driveJSONLines tests ---
type testSink struct {
events []runtime.RuntimeEvent
}
func (s *testSink) Emit(_ context.Context, e runtime.RuntimeEvent) error {
s.events = append(s.events, e)
return nil
}
func TestDriveJSONLines_DispatchesEmitterEvents(t *testing.T) {
input := `{"type":"message","role":"assistant","content":"hello"}
not-json
{"type":"message","role":"assistant","content":"world"}`
outBuf := &strings.Builder{}
sink := &testSink{}
outReader := strings.NewReader(input + "\n")
// mockEmitter returns two events per line.
mockEmitter := &mockLineEmitter{
name: "mock",
emitFn: func(line string) ([]runtime.RuntimeEvent, error) {
return []runtime.RuntimeEvent{
{Type: runtime.EventTypeDelta, Delta: "a:" + line},
{Type: runtime.EventTypeDelta, Delta: "b:" + line},
}, nil
},
}
outputTokens, err := driveJSONLines(context.Background(), outReader, sink, "run-1", outBuf, mockEmitter, 4*1024*1024)
if err != nil {
t.Fatalf("driveJSONLines: %v", err)
}
if got := len(sink.events); got != 4 {
t.Fatalf("expected 4 events, got %d", got)
}
// Verify RunID and Timestamp are set.
for i, ev := range sink.events {
if ev.RunID != "run-1" {
t.Errorf("event %d: RunID = %q, want %q", i, ev.RunID, "run-1")
}
if ev.Timestamp.IsZero() {
t.Errorf("event %d: Timestamp is zero", i)
}
if ev.Type == runtime.EventTypeDelta {
outputTokens += len(strings.Fields(ev.Delta))
}
}
// outBuf should contain all raw lines.
raw := outBuf.String()
if !strings.Contains(raw, `{"type":"message"`) {
t.Fatalf("outBuf missing JSON line: %q", raw)
}
}
func TestDriveJSONLines_StopsOnEmitterError(t *testing.T) {
input := `{"type":"text"}
{"type":"error"}`
outBuf := &strings.Builder{}
sink := &testSink{}
outReader := strings.NewReader(input + "\n")
callCount := 0
mockEmitter := &mockLineEmitter{
name: "mock",
emitFn: func(line string) ([]runtime.RuntimeEvent, error) {
callCount++
if callCount == 2 {
return nil, errors.New("emitter failure")
}
return []runtime.RuntimeEvent{{Type: runtime.EventTypeDelta, Delta: "ok"}}, nil
},
}
_, err := driveJSONLines(context.Background(), outReader, sink, "run-2", outBuf, mockEmitter, 4*1024*1024)
if err == nil {
t.Fatal("expected error, got nil")
}
if err.Error() != "emitter failure" {
t.Fatalf("unexpected error: %v", err)
}
if callCount != 2 {
t.Fatalf("expected emitter called 2 times, got %d", callCount)
}
}
// mockLineEmitter implements lineEmitter for testing.
type mockLineEmitter struct {
name string
emitFn func(line string) ([]runtime.RuntimeEvent, error)
}
func (m *mockLineEmitter) Name() string { return m.name }
func (m *mockLineEmitter) Emit(line string) ([]runtime.RuntimeEvent, error) {
if m.emitFn != nil {
return m.emitFn(line)
}
return nil, nil
}
// --- stream-json emitter tests ---
func TestStreamJSONEmitter_AssistantMessageBecomesDelta(t *testing.T) {
e := streamJSONEmitter{}
line := `{"type":"message","role":"assistant","content":"Hello world"}`
events, err := e.Emit(line)
if err != nil {
t.Fatalf("Emit: %v", err)
}
if len(events) != 1 {
t.Fatalf("expected 1 event, got %d", len(events))
}
if events[0].Type != runtime.EventTypeDelta {
t.Fatalf("event type = %q, want %q", events[0].Type, runtime.EventTypeDelta)
}
if events[0].Delta != "Hello world" {
t.Fatalf("delta = %q, want %q", events[0].Delta, "Hello world")
}
}
func TestStreamJSONEmitter_SkipsNonAssistantRoles(t *testing.T) {
e := streamJSONEmitter{}
line := `{"type":"message","role":"user","content":"hi"}`
events, _ := e.Emit(line)
if len(events) != 0 {
t.Fatalf("expected 0 events for user role, got %d", len(events))
}
}
func TestStreamJSONEmitter_ErrorEvent(t *testing.T) {
e := streamJSONEmitter{}
line := `{"type":"error","error":"something broke"}`
events, _ := e.Emit(line)
if len(events) != 1 {
t.Fatalf("expected 1 event, got %d", len(events))
}
if events[0].Type != runtime.EventTypeError {
t.Fatalf("event type = %q, want %q", events[0].Type, runtime.EventTypeError)
}
if events[0].Error != "something broke" {
t.Fatalf("error = %q, want %q", events[0].Error, "something broke")
}
}
func TestStreamJSONEmitter_EmptyContentSkipped(t *testing.T) {
e := streamJSONEmitter{}
line := `{"type":"message","role":"assistant","content":""}`
events, _ := e.Emit(line)
if len(events) != 0 {
t.Fatalf("expected 0 events for empty content, got %d", len(events))
}
}
// --- claude-json emitter tests ---
func TestClaudeJSONEmitter_TextDelta(t *testing.T) {
e := claudeJSONEmitter{}
line := `{"type":"stream_event","event":{"type":"content_block_delta","delta":{"type":"text_delta","text":"partial"}}}`
events, _ := e.Emit(line)
if len(events) != 1 {
t.Fatalf("expected 1 event, got %d", len(events))
}
if events[0].Delta != "partial" {
t.Fatalf("delta = %q, want %q", events[0].Delta, "partial")
}
}
func TestClaudeJSONEmitter_ErrorResult(t *testing.T) {
e := claudeJSONEmitter{}
line := `{"type":"result","is_error":true,"result":"API timeout"}`
events, _ := e.Emit(line)
if len(events) != 1 {
t.Fatalf("expected 1 event, got %d", len(events))
}
if events[0].Type != runtime.EventTypeError {
t.Fatalf("event type = %q, want %q", events[0].Type, runtime.EventTypeError)
}
if events[0].Error != "API timeout" {
t.Fatalf("error = %q, want %q", events[0].Error, "API timeout")
}
}
func TestClaudeJSONEmitter_NonTextDeltaSkipped(t *testing.T) {
e := claudeJSONEmitter{}
line := `{"type":"stream_event","event":{"type":"content_block_delta","delta":{"type":"image_delta","data":"base64"}}}`
events, _ := e.Emit(line)
if len(events) != 0 {
t.Fatalf("expected 0 events for non-text delta, got %d", len(events))
}
}
// --- codex-json emitter tests ---
func TestCodexJSONEmitter_AgentMessageBecomesDelta(t *testing.T) {
e := codexJSONEmitter{}
line := `{"type":"item.completed","item":{"type":"agent_message","text":"Done."}}`
events, _ := e.Emit(line)
if len(events) != 1 {
t.Fatalf("expected 1 event, got %d", len(events))
}
if events[0].Delta != "Done." {
t.Fatalf("delta = %q, want %q", events[0].Delta, "Done.")
}
}
func TestCodexJSONEmitter_TurnFailedBecomesError(t *testing.T) {
e := codexJSONEmitter{}
line := `{"type":"turn.failed","error":{"message":"quota exceeded"}}`
events, _ := e.Emit(line)
if len(events) != 1 {
t.Fatalf("expected 1 event, got %d", len(events))
}
if events[0].Type != runtime.EventTypeError {
t.Fatalf("event type = %q, want %q", events[0].Type, runtime.EventTypeError)
}
if events[0].Error != "quota exceeded" {
t.Fatalf("error = %q, want %q", events[0].Error, "quota exceeded")
}
}
func TestCodexJSONEmitter_StandardErrorEvent(t *testing.T) {
e := codexJSONEmitter{}
line := `{"type":"error","message":"network timeout"}`
events, _ := e.Emit(line)
if len(events) != 1 {
t.Fatalf("expected 1 event, got %d", len(events))
}
if events[0].Error != "network timeout" {
t.Fatalf("error = %q, want %q", events[0].Error, "network timeout")
}
}
func TestCodexJSONEmitter_NonAgentMessageSkipped(t *testing.T) {
e := codexJSONEmitter{}
line := `{"type":"item.completed","item":{"type":"tool_call","text":"ls -la"}}`
events, _ := e.Emit(line)
if len(events) != 0 {
t.Fatalf("expected 0 events for non-agent_message item, got %d", len(events))
}
}
// --- opencode-json emitter tests ---
func TestOpencodeJSONEmitter_TextPart(t *testing.T) {
e := opencodeJSONEmitter{}
line := `{"type":"text","part":{"type":"text","text":"response text"}}`
events, _ := e.Emit(line)
if len(events) != 1 {
t.Fatalf("expected 1 event, got %d", len(events))
}
if events[0].Delta != "response text" {
t.Fatalf("delta = %q, want %q", events[0].Delta, "response text")
}
}
func TestOpencodeJSONEmitter_NestedErrorMessage(t *testing.T) {
e := opencodeJSONEmitter{}
line := `{"type":"error","error":{"name":"UnknownError","data":{"message":"Model not found"}}}`
events, _ := e.Emit(line)
if len(events) != 1 {
t.Fatalf("expected 1 event, got %d", len(events))
}
if events[0].Error != "Model not found" {
t.Fatalf("error = %q, want %q", events[0].Error, "Model not found")
}
}
func TestOpencodeJSONEmitter_FallbackToErrorName(t *testing.T) {
e := opencodeJSONEmitter{}
line := `{"type":"error","error":{"name":"ProviderUnavailable"}}`
events, _ := e.Emit(line)
if len(events) != 1 {
t.Fatalf("expected 1 event, got %d", len(events))
}
if events[0].Error != "ProviderUnavailable" {
t.Fatalf("error = %q, want %q", events[0].Error, "ProviderUnavailable")
}
}
func TestOpencodeJSONEmitter_EmptyTextPartSkipped(t *testing.T) {
e := opencodeJSONEmitter{}
line := `{"type":"text","part":{"type":"text","text":""}}`
events, _ := e.Emit(line)
if len(events) != 0 {
t.Fatalf("expected 0 events for empty text, got %d", len(events))
}
}
// --- cline-json emitter tests ---
func TestClineJSONEmitter_TextEvent(t *testing.T) {
e := clineJSONEmitter{}
line := `{"type":"say","say":"text","text":"Hello from Cline"}`
events, _ := e.Emit(line)
if len(events) != 1 {
t.Fatalf("expected 1 event, got %d", len(events))
}
if events[0].Delta != "Hello from Cline" {
t.Fatalf("delta = %q, want %q", events[0].Delta, "Hello from Cline")
}
}
func TestClineJSONEmitter_AskApiReqFailedBecomesError(t *testing.T) {
e := clineJSONEmitter{}
line := `{"type":"ask","ask":"api_req_failed","text":"model unavailable"}`
events, _ := e.Emit(line)
if len(events) != 1 {
t.Fatalf("expected 1 event, got %d", len(events))
}
if events[0].Type != runtime.EventTypeError {
t.Fatalf("event type = %q, want %q", events[0].Type, runtime.EventTypeError)
}
if events[0].Error != "model unavailable" {
t.Fatalf("error = %q, want %q", events[0].Error, "model unavailable")
}
}
func TestClineJSONEmitter_CompletionError(t *testing.T) {
e := clineJSONEmitter{}
line := `{"type":"completion","status":"error","error":"task failed"}`
events, _ := e.Emit(line)
if len(events) != 1 {
t.Fatalf("expected 1 event, got %d", len(events))
}
if events[0].Error != "task failed" {
t.Fatalf("error = %q, want %q", events[0].Error, "task failed")
}
}
func TestClineJSONEmitter_SayErrorWithFallback(t *testing.T) {
e := clineJSONEmitter{}
line := `{"type":"say","say":"error","message":"fallback msg"}`
events, _ := e.Emit(line)
if len(events) != 1 {
t.Fatalf("expected 1 event, got %d", len(events))
}
if events[0].Error != "fallback msg" {
t.Fatalf("error = %q, want %q", events[0].Error, "fallback msg")
}
}
func TestClineJSONEmitter_CompletionErrorWithoutErrorField(t *testing.T) {
e := clineJSONEmitter{}
line := `{"type":"completion","status":"error"}`
events, _ := e.Emit(line)
if len(events) != 1 {
t.Fatalf("expected 1 event, got %d", len(events))
}
if events[0].Error != "cline task failed" {
t.Fatalf("error = %q, want %q", events[0].Error, "cline task failed")
}
}
// --- Emitter Name tests ---
func TestEmitters_HaveDistinctNames(t *testing.T) {
testCases := []struct {
emitter lineEmitter
want string
}{
{streamJSONEmitter{}, "stream-json"},
{claudeJSONEmitter{}, "claude-json"},
{codexJSONEmitter{}, "codex-json"},
{opencodeJSONEmitter{}, "opencode-json"},
{clineJSONEmitter{}, "cline-json"},
}
for _, tc := range testCases {
if got := tc.emitter.Name(); got != tc.want {
t.Errorf("%T.Name() = %q, want %q", tc.emitter, got, tc.want)
}
}
}
// --- jsonEmitters registry consistency test ---
func TestJsonEmitters_RegistryMatchesImpls(t *testing.T) {
expectedKeys := []string{"stream-json", "claude-json", "codex-json", "opencode-json", "cline-json"}
for _, key := range expectedKeys {
reg, ok := jsonEmitters[key]
if !ok {
t.Fatalf("jsonEmitters[%q] not found in registry", key)
}
if reg.emitter.Name() != key {
t.Errorf("jsonEmitters[%q].emitter.Name() = %q, want %q", key, reg.emitter.Name(), key)
}
if reg.scanBufMax < 1024 {
t.Errorf("jsonEmitters[%q].scanBufMax = %d, expected at least 1024", key, reg.scanBufMax)
}
}
// Ensure no extra keys in registry.
if len(jsonEmitters) != len(expectedKeys) {
t.Errorf("expected %d registered emitters, got %d", len(expectedKeys), len(jsonEmitters))
}
}
// --- driveJSONLines integration: raw output accumulation ---
func TestDriveJSONLines_AccumulatesRawOutput(t *testing.T) {
lines := `{"type":"text","part":{"type":"text","text":"a"}}
{"type":"text","part":{"type":"text","text":"b"}}`
outBuf := &strings.Builder{}
sink := &testSink{}
outReader := strings.NewReader(lines + "\n")
outputTokens, err := driveJSONLines(context.Background(), outReader, sink, "run-int", outBuf, opencodeJSONEmitter{}, 4*1024*1024)
if err != nil {
t.Fatalf("driveJSONLines: %v", err)
}
// outBuf should contain the raw lines with newlines.
raw := outBuf.String()
if !strings.Contains(raw, `{"type":"text"`) {
t.Fatalf("outBuf missing expected line: %q", raw)
}
// Count newlines in outBuf — should match input lines.
newlineCount := strings.Count(raw, "\n")
if newlineCount != 2 {
t.Fatalf("expected 2 newlines in outBuf, got %d", newlineCount)
}
// 2 delta events emitted, each with 1 word in delta.
if outputTokens != 2 {
t.Fatalf("expected 2 outputTokens, got %d", outputTokens)
}
}
// --- driveJSONLines: scanner buffer size respected ---
func TestDriveJSONLines_ScannerBufferMax(t *testing.T) {
// Create a line larger than a small scanBufMax.
longLine := strings.Repeat("x", 100) + `{"type":"text"}`
outBuf := &strings.Builder{}
sink := &testSink{}
outReader := strings.NewReader(longLine + "\n")
// With a 50-byte buffer max, the line will be cut off at 50 bytes
// and won't start with '{', so it will be skipped.
outputTokens, err := driveJSONLines(context.Background(), outReader, sink, "run-buf", outBuf, &mockLineEmitter{name: "buf"}, 50)
if err != nil {
t.Fatalf("driveJSONLines: %v", err)
}
// The line starts with 'x' not '{', so emitter is never called,
// and no events emitted, outputTokens == 0.
if outputTokens != 0 {
t.Fatalf("expected 0 outputTokens for line too long for buffer, got %d", outputTokens)
}
}
// --- driveJSONLines: empty and non-JSON lines are skipped ---
func TestDriveJSONLines_SkipsEmptyAndNonJSONLines(t *testing.T) {
input := "\n\nnot json at all\n \n{\"type\":\"text\"}\n"
outBuf := &strings.Builder{}
sink := &testSink{}
outReader := strings.NewReader(input)
callCount := 0
mockEmitter := &mockLineEmitter{
name: "mock",
emitFn: func(line string) ([]runtime.RuntimeEvent, error) {
callCount++
return []runtime.RuntimeEvent{{Type: runtime.EventTypeDelta, Delta: line}}, nil
},
}
_, err := driveJSONLines(context.Background(), outReader, sink, "run-skip", outBuf, mockEmitter, 4*1024*1024)
if err != nil {
t.Fatalf("driveJSONLines: %v", err)
}
if callCount != 1 {
t.Fatalf("expected emitter called 1 time, got %d", callCount)
}
}
// --- driveJSONLines: outputTokens counted only for delta events ---
func TestDriveJSONLines_OutputTokensCountedForDeltaOnly(t *testing.T) {
outBuf := &strings.Builder{}
sink := &testSink{}
outReader := strings.NewReader(`{"type":"error"}
{"type":"delta"}` + "\n")
mockEmitter := &mockLineEmitter{
name: "mock",
emitFn: func(line string) ([]runtime.RuntimeEvent, error) {
if strings.Contains(line, "error") {
return []runtime.RuntimeEvent{{Type: runtime.EventTypeError, Error: "bad"}}, nil
}
return []runtime.RuntimeEvent{{Type: runtime.EventTypeDelta, Delta: "one two three"}}, nil
},
}
outputTokens, err := driveJSONLines(context.Background(), outReader, sink, "run-tokens", outBuf, mockEmitter, 4*1024*1024)
if err != nil {
t.Fatalf("driveJSONLines: %v", err)
}
// "one two three" has 3 fields; error event contributes 0.
if outputTokens != 3 {
t.Fatalf("expected 3 outputTokens, got %d", outputTokens)
}
}

View file

@ -1,9 +1,7 @@
package cli
import (
"bufio"
"context"
"encoding/json"
"errors"
"fmt"
"io"
@ -64,18 +62,9 @@ func (c *CLI) executeCommand(ctx context.Context, spec runtime.ExecutionSpec, pr
outputTokens int
readErr error
)
switch profile.OutputFormat {
case "stream-json":
outputTokens, readErr = emitStreamJSONLines(ctx, stdout, sink, spec.RunID, &outBuf)
case "codex-json":
outputTokens, readErr = emitCodexJSONLines(ctx, stdout, sink, spec.RunID, &outBuf)
case "claude-json":
outputTokens, readErr = emitClaudeJSONLines(ctx, stdout, sink, spec.RunID, &outBuf)
case "opencode-json":
outputTokens, readErr = emitOpencodeJSON(ctx, stdout, sink, spec.RunID, &outBuf)
case "cline-json":
outputTokens, readErr = emitClineJSON(ctx, stdout, sink, spec.RunID, &outBuf)
default:
if reg, ok := jsonEmitters[profile.OutputFormat]; ok {
outputTokens, readErr = driveJSONLines(ctx, stdout, sink, spec.RunID, &outBuf, reg.emitter, reg.scanBufMax)
} else {
outputTokens, readErr = emitStdoutChunks(ctx, stdout, sink, spec.RunID, &outBuf)
}
if readErr != nil {
@ -158,316 +147,6 @@ func emitStdoutChunks(ctx context.Context, stdout io.Reader, sink runtime.EventS
}
}
// emitStreamJSONLines reads JSON Lines from stdout (one JSON object per line)
// and emits assistant content (delta=true) as RuntimeEvent deltas. Other
// event types are written to outBuf so they remain available for diagnostics
// but are not pushed to the sink.
func emitStreamJSONLines(ctx context.Context, stdout io.Reader, sink runtime.EventSink, runID string, outBuf *strings.Builder) (int, error) {
scanner := bufio.NewScanner(stdout)
scanner.Buffer(make([]byte, 64*1024), 4*1024*1024)
outputTokens := 0
for scanner.Scan() {
line := scanner.Bytes()
outBuf.Write(line)
outBuf.WriteByte('\n')
trimmed := strings.TrimSpace(string(line))
if trimmed == "" || trimmed[0] != '{' {
continue
}
var ev struct {
Type string `json:"type"`
Role string `json:"role"`
Content string `json:"content"`
Delta bool `json:"delta"`
Error string `json:"error"`
}
if err := json.Unmarshal(line, &ev); err != nil {
continue
}
switch ev.Type {
case "message":
if ev.Role != "assistant" || ev.Content == "" {
continue
}
outputTokens += len(strings.Fields(ev.Content))
_ = sink.Emit(ctx, runtime.RuntimeEvent{
RunID: runID,
Type: runtime.EventTypeDelta,
Delta: ev.Content,
Timestamp: time.Now(),
})
case "error":
_ = sink.Emit(ctx, runtime.RuntimeEvent{
RunID: runID,
Type: runtime.EventTypeError,
Error: ev.Error,
Timestamp: time.Now(),
})
}
}
if err := scanner.Err(); err != nil {
return outputTokens, err
}
return outputTokens, nil
}
// emitClaudeJSONLines parses `claude -p --output-format stream-json
// --include-partial-messages` JSONL output. Token-level text arrives as
// stream_event with event.type == "content_block_delta" and
// event.delta.type == "text_delta". Other event types (system, assistant,
// result, rate_limit_event, ...) are written to outBuf for diagnostics but
// not pushed to the sink to avoid duplicate text.
func emitClaudeJSONLines(ctx context.Context, stdout io.Reader, sink runtime.EventSink, runID string, outBuf *strings.Builder) (int, error) {
scanner := bufio.NewScanner(stdout)
scanner.Buffer(make([]byte, 64*1024), 8*1024*1024)
outputTokens := 0
for scanner.Scan() {
line := scanner.Bytes()
outBuf.Write(line)
outBuf.WriteByte('\n')
trimmed := strings.TrimSpace(string(line))
if trimmed == "" || trimmed[0] != '{' {
continue
}
var ev struct {
Type string `json:"type"`
Event struct {
Type string `json:"type"`
Delta struct {
Type string `json:"type"`
Text string `json:"text"`
} `json:"delta"`
} `json:"event"`
IsError bool `json:"is_error"`
Result string `json:"result"`
}
if err := json.Unmarshal(line, &ev); err != nil {
continue
}
switch ev.Type {
case "stream_event":
if ev.Event.Type != "content_block_delta" || ev.Event.Delta.Type != "text_delta" || ev.Event.Delta.Text == "" {
continue
}
outputTokens += len(strings.Fields(ev.Event.Delta.Text))
_ = sink.Emit(ctx, runtime.RuntimeEvent{
RunID: runID,
Type: runtime.EventTypeDelta,
Delta: ev.Event.Delta.Text,
Timestamp: time.Now(),
})
case "result":
if ev.IsError && ev.Result != "" {
_ = sink.Emit(ctx, runtime.RuntimeEvent{
RunID: runID,
Type: runtime.EventTypeError,
Error: ev.Result,
Timestamp: time.Now(),
})
}
}
}
if err := scanner.Err(); err != nil {
return outputTokens, err
}
return outputTokens, nil
}
// emitCodexJSONLines parses `codex exec --json` JSONL output. Codex emits
// one event per line; assistant text arrives in a single `item.completed`
// event with item.type == "agent_message" rather than token-by-token.
func emitCodexJSONLines(ctx context.Context, stdout io.Reader, sink runtime.EventSink, runID string, outBuf *strings.Builder) (int, error) {
scanner := bufio.NewScanner(stdout)
scanner.Buffer(make([]byte, 64*1024), 4*1024*1024)
outputTokens := 0
for scanner.Scan() {
line := scanner.Bytes()
outBuf.Write(line)
outBuf.WriteByte('\n')
trimmed := strings.TrimSpace(string(line))
if trimmed == "" || trimmed[0] != '{' {
continue
}
var ev struct {
Type string `json:"type"`
Item struct {
Type string `json:"type"`
Text string `json:"text"`
} `json:"item"`
Message string `json:"message"`
Error struct {
Message string `json:"message"`
} `json:"error"`
}
if err := json.Unmarshal(line, &ev); err != nil {
continue
}
switch ev.Type {
case "item.completed":
if ev.Item.Type != "agent_message" || ev.Item.Text == "" {
continue
}
outputTokens += len(strings.Fields(ev.Item.Text))
_ = sink.Emit(ctx, runtime.RuntimeEvent{
RunID: runID,
Type: runtime.EventTypeDelta,
Delta: ev.Item.Text,
Timestamp: time.Now(),
})
case "error":
_ = sink.Emit(ctx, runtime.RuntimeEvent{
RunID: runID,
Type: runtime.EventTypeError,
Error: ev.Message,
Timestamp: time.Now(),
})
case "turn.failed":
_ = sink.Emit(ctx, runtime.RuntimeEvent{
RunID: runID,
Type: runtime.EventTypeError,
Error: ev.Error.Message,
Timestamp: time.Now(),
})
}
}
if err := scanner.Err(); err != nil {
return outputTokens, err
}
return outputTokens, nil
}
// emitOpencodeJSON parses `opencode run --format json` output.
// Each line is a JSON event: step_start, text (with part.text), step_finish, or error.
// Only type=="text" events with a non-empty part.text are emitted as deltas.
func emitOpencodeJSON(ctx context.Context, stdout io.Reader, sink runtime.EventSink, runID string, outBuf *strings.Builder) (int, error) {
scanner := bufio.NewScanner(stdout)
scanner.Buffer(make([]byte, 64*1024), 4*1024*1024)
outputTokens := 0
for scanner.Scan() {
line := scanner.Bytes()
outBuf.Write(line)
outBuf.WriteByte('\n')
trimmed := strings.TrimSpace(string(line))
if trimmed == "" || trimmed[0] != '{' {
continue
}
var ev struct {
Type string `json:"type"`
Error struct {
Name string `json:"name"`
Data struct {
Message string `json:"message"`
} `json:"data"`
} `json:"error"`
Part struct {
Type string `json:"type"`
Text string `json:"text"`
} `json:"part"`
}
if err := json.Unmarshal(line, &ev); err != nil {
continue
}
switch ev.Type {
case "text":
if ev.Part.Type == "text" && ev.Part.Text != "" {
outputTokens += len(strings.Fields(ev.Part.Text))
_ = sink.Emit(ctx, runtime.RuntimeEvent{RunID: runID, Type: runtime.EventTypeDelta, Delta: ev.Part.Text, Timestamp: time.Now()})
}
case "error":
msg := ev.Error.Data.Message
if msg == "" {
msg = ev.Error.Name
}
if msg != "" {
_ = sink.Emit(ctx, runtime.RuntimeEvent{RunID: runID, Type: runtime.EventTypeError, Error: msg, Timestamp: time.Now()})
}
}
}
if err := scanner.Err(); err != nil {
return outputTokens, err
}
return outputTokens, nil
}
// emitClineJSON parses `cline --json` headless output. Cline emits lifecycle
// events as JSONL; assistant text is carried by say=="text" events.
func emitClineJSON(ctx context.Context, stdout io.Reader, sink runtime.EventSink, runID string, outBuf *strings.Builder) (int, error) {
scanner := bufio.NewScanner(stdout)
scanner.Buffer(make([]byte, 64*1024), 8*1024*1024)
outputTokens := 0
for scanner.Scan() {
line := scanner.Bytes()
outBuf.Write(line)
outBuf.WriteByte('\n')
trimmed := strings.TrimSpace(string(line))
if trimmed == "" || trimmed[0] != '{' {
continue
}
var ev struct {
Type string `json:"type"`
Say string `json:"say"`
Ask string `json:"ask"`
Text string `json:"text"`
Message string `json:"message"`
Status string `json:"status"`
Error string `json:"error"`
}
if err := json.Unmarshal(line, &ev); err != nil {
continue
}
switch {
case ev.Type == "say" && ev.Say == "text" && ev.Text != "":
outputTokens += len(strings.Fields(ev.Text))
_ = sink.Emit(ctx, runtime.RuntimeEvent{RunID: runID, Type: runtime.EventTypeDelta, Delta: ev.Text, Timestamp: time.Now()})
case ev.Type == "say" && ev.Say == "error":
msg := ev.Text
if msg == "" {
msg = ev.Message
}
if msg != "" {
_ = sink.Emit(ctx, runtime.RuntimeEvent{RunID: runID, Type: runtime.EventTypeError, Error: msg, Timestamp: time.Now()})
}
case ev.Type == "completion" && ev.Status == "error":
msg := ev.Error
if msg == "" {
msg = ev.Message
}
if msg == "" {
msg = "cline task failed"
}
_ = sink.Emit(ctx, runtime.RuntimeEvent{RunID: runID, Type: runtime.EventTypeError, Error: msg, Timestamp: time.Now()})
case ev.Type == "ask" && ev.Ask == "api_req_failed":
msg := ev.Text
if msg == "" {
msg = ev.Message
}
if msg != "" {
_ = sink.Emit(ctx, runtime.RuntimeEvent{RunID: runID, Type: runtime.EventTypeError, Error: msg, Timestamp: time.Now()})
}
}
}
if err := scanner.Err(); err != nil {
return outputTokens, err
}
return outputTokens, nil
}
func extractPrompt(input map[string]any) string {
if input == nil {
return ""