docs(03-01): complete command executor plan

2026-03-11 15:55:38 +08:00
parent ff0846c820
commit d86d4113a6
3 changed files with 157 additions and 11 deletions
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+---
+phase: 03-orchestration
+plan: 01
+subsystem: orchestration
+tags: [tmux, command-execution, output-capture, error-detection, libtmux]
+
+# Dependency graph
+requires:
+  - phase: 01-core-infrastructure
+    provides: TmuxSession, TmuxSessionManager for session management
+provides:
+  - CommandExecutor class for sending commands and capturing output
+  - OutputCapture class for prompt detection and stabilization
+  - CommandResult dataclass for execution results
+affects: [03-02, 03-03, 04-full-command-support]
+
+# Tech tracking
+tech-stack:
+  added: []
+  patterns:
+    - Mock-based testing for tmux integration (no real tmux server required)
+    - Content-hash based stabilization detection
+    - Word-boundary matching for ASCII error keywords, substring for non-ASCII
+
+key-files:
+  created:
+    - src/gsd_openclaw/command_executor.py
+    - tests/test_command_executor.py
+  modified:
+    - src/gsd_openclaw/__init__.py
+
+key-decisions:
+  - "60 second default timeout for command execution (from CONTEXT.md user decision)"
+  - "3 consecutive polls with same output hash for stabilization detection"
+  - "Word-boundary regex for ASCII error keywords, simple substring for Chinese"
+
+patterns-established:
+  - "CommandResult dataclass with output, completed, has_error, error_type fields"
+  - "OutputCapture with PROMPT_PATTERNS for shell prompt detection"
+  - "CommandExecutor with ERROR_KEYWORDS for error detection"
+
+requirements-completed: [BRDG-02, BRDG-03]
+
+# Metrics
+duration: 5min
+completed: 2026-03-11
+---
+
+# Phase 3 Plan 1: Command Execution Layer Summary
+
+**Command execution with output capture, prompt detection, and error keyword detection using mock-based testing**
+
+## Performance
+
+- **Duration:** 5 min
+- **Started:** 2026-03-11T07:44:54Z
+- **Completed:** 2026-03-11T07:49:48Z
+- **Tasks:** 3
+- **Files modified:** 3
+
+## Accomplishments
+
+- Implemented CommandExecutor class for sending commands to tmux sessions
+- Implemented OutputCapture class with prompt pattern detection and output stabilization
+- Added error detection supporting both English and Chinese keywords
+- Created comprehensive test suite with 24 tests (341 lines)
+
+## Task Commits
+
+Each task was committed atomically:
+
+1. **Task 1: Create test scaffold for command executor** - `67f9d70` (test)
+2. **Task 2: Implement OutputCapture class** - `7b682df` (feat)
+3. **Task 3: Implement CommandExecutor class** - `7b682df` (feat)
+
+**Plan metadata:** `1dd4b3a` (feat: export classes from package)
+
+_Note: Tasks 2 and 3 were implemented together in a single commit since the implementation was cohesive._
+
+## Files Created/Modified
+
+- `src/gsd_openclaw/command_executor.py` - Command execution and output capture with CommandResult, OutputCapture, CommandExecutor classes
+- `tests/test_command_executor.py` - Comprehensive test suite with 24 tests for command execution
+- `src/gsd_openclaw/__init__.py` - Added exports for CommandResult, OutputCapture, CommandExecutor
+
+## Decisions Made
+
+- Used 60 second default timeout as specified in CONTEXT.md user decision
+- Implemented stabilization detection using content hash comparison (not just line count)
+- Used word-boundary regex matching for ASCII error keywords to avoid false positives
+- Used simple substring matching for Chinese keywords (word boundary doesn't work with non-ASCII)
+
+## Deviations from Plan
+
+### Auto-fixed Issues
+
+**1. [Rule 1 - Bug] Fixed prompt pattern matching to avoid false positives**
+- **Found during:** Task 2 (OutputCapture implementation)
+- **Issue:** Pattern `^\$\s+` matched lines like "$ not a prompt" incorrectly
+- **Fix:** Changed to use only patterns with end-of-line anchors (`^\$\s*$`)
+- **Files modified:** src/gsd_openclaw/command_executor.py
+- **Verification:** Test `test_is_prompt_returns_false_for_non_prompt_lines` passes
+- **Committed in:** 7b682df (Task 2 commit)
+
+**2. [Rule 1 - Bug] Fixed stabilization detection to check content not just line count**
+- **Found during:** Task 2 (OutputCapture implementation)
+- **Issue:** Stabilization was detected based only on line count, causing false positives when content changed but line count stayed same
+- **Fix:** Changed to use content hash comparison instead of line count
+- **Files modified:** src/gsd_openclaw/command_executor.py
+- **Verification:** Test `test_capture_until_complete_returns_false_on_timeout` passes
+- **Committed in:** 7b682df (Task 2 commit)
+
+**3. [Rule 1 - Bug] Fixed error detection to use word boundaries**
+- **Found during:** Task 2 (CommandExecutor implementation)
+- **Issue:** Simple substring matching caused "Traceback" to match "error" (substring in lowercase)
+- **Fix:** Used word-boundary regex for ASCII keywords, substring for non-ASCII
+- **Files modified:** src/gsd_openclaw/command_executor.py
+- **Verification:** Test `test_detect_errors_returns_true_for_exception_keyword` passes
+- **Committed in:** 7b682df (Task 2 commit)
+
+---
+
+**Total deviations:** 3 auto-fixed (all Rule 1 - Bug fixes)
+**Impact on plan:** All auto-fixes necessary for correctness. No scope creep.
+
+## Issues Encountered
+
+None - implementation proceeded smoothly following TDD approach.
+
+## User Setup Required
+
+None - no external service configuration required.
+
+## Next Phase Readiness
+
+- Command execution layer complete, ready for orchestrator implementation
+- OutputCapture and CommandExecutor can be used by Phase 3 Plan 2 for command routing
+- All 128 tests pass across the project
+
+---
+*Phase: 03-orchestration*
+*Completed: 2026-03-11*