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bootstrap/tools/orchestrator-matrix/dispatcher/macp_dispatcher.py

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Python

#!/usr/bin/env python3
"""MACP dispatcher library for orchestrator-matrix tasks."""
from __future__ import annotations
import datetime as dt
import json
import os
import pathlib
import re
import shlex
import subprocess
import tempfile
from typing import Any
def now_iso() -> str:
return dt.datetime.now(dt.timezone.utc).isoformat()
def save_json(path: pathlib.Path, data: Any) -> None:
path.parent.mkdir(parents=True, exist_ok=True)
tmp = path.with_suffix(path.suffix + ".tmp")
with tmp.open("w", encoding="utf-8") as handle:
json.dump(data, handle, indent=2)
handle.write("\n")
tmp.replace(path)
def _slugify(value: str) -> str:
lowered = value.strip().lower()
slug = re.sub(r"[^a-z0-9]+", "-", lowered)
return slug.strip("-") or "task"
def _run_command(command: str, cwd: pathlib.Path, log_path: pathlib.Path, timeout_sec: int) -> tuple[int, str, bool]:
log_path.parent.mkdir(parents=True, exist_ok=True)
with log_path.open("a", encoding="utf-8") as log:
log.write(f"\n[{now_iso()}] COMMAND: {command}\n")
log.flush()
proc = subprocess.Popen(
["bash", "-lc", command],
cwd=str(cwd),
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT,
text=True,
encoding="utf-8",
)
timed_out = False
try:
output, _ = proc.communicate(timeout=max(1, timeout_sec))
exit_code = proc.returncode
except subprocess.TimeoutExpired:
timed_out = True
proc.kill()
output, _ = proc.communicate()
exit_code = 124
log.write(f"[{now_iso()}] TIMEOUT: exceeded {timeout_sec}s\n")
if output:
log.write(output)
log.write(f"[{now_iso()}] EXIT: {exit_code}\n")
return exit_code, output or "", timed_out
def _git_capture(args: list[str], cwd: pathlib.Path) -> str:
proc = subprocess.run(args, cwd=str(cwd), check=True, capture_output=True, text=True, encoding="utf-8")
return proc.stdout.strip()
def _resolve_dispatch(task: dict[str, Any]) -> str:
return str(task.get("dispatch") or "exec").strip().lower() or "exec"
def _resolve_runtime(task: dict[str, Any]) -> str:
return str(task.get("runtime") or "codex").strip() or "codex"
def _resolve_branch(task: dict[str, Any]) -> str:
branch = str(task.get("branch") or "").strip()
if branch:
return branch
task_id_slug = _slugify(str(task.get("id") or "task"))
title_slug = _slugify(str(task.get("title") or task.get("id") or "task"))
if title_slug == task_id_slug:
branch = f"feat/{task_id_slug}"
else:
branch = f"feat/{task_id_slug}-{title_slug}"
task["branch"] = branch
return branch
def _resolve_worktree_path(task: dict[str, Any], repo_root: pathlib.Path) -> pathlib.Path:
explicit = str(task.get("worktree") or "").strip()
if explicit:
path = pathlib.Path(os.path.expanduser(explicit)).resolve()
else:
base = pathlib.Path(os.path.expanduser(f"~/src/{repo_root.name}-worktrees")).resolve()
path = base / _slugify(str(task.get("id") or task.get("title") or "task"))
task["worktree"] = str(path)
return path
def _default_worktree_path(task: dict[str, Any], repo_root: pathlib.Path, base_template: str) -> pathlib.Path:
base = pathlib.Path(os.path.expanduser(base_template.format(repo=repo_root.name))).resolve()
return base / _slugify(str(task.get("id") or task.get("title") or "task"))
def _resolve_start_point(repo_root: pathlib.Path) -> str:
candidates = ["origin/main", "main", "HEAD"]
for candidate in candidates:
proc = subprocess.run(
["git", "-C", str(repo_root), "rev-parse", "--verify", f"{candidate}^{{commit}}"],
capture_output=True,
text=True,
encoding="utf-8",
)
if proc.returncode == 0:
return candidate
raise RuntimeError(f"Unable to resolve worktree start point for {repo_root}")
def _read_brief(task: dict[str, Any], repo_root: pathlib.Path) -> str:
brief_path_raw = str(task.get("brief_path") or "").strip()
if not brief_path_raw:
raise ValueError("MACP yolo dispatch requires brief_path")
brief_path = (repo_root / brief_path_raw).resolve()
return brief_path.read_text(encoding="utf-8").strip()
def _stage_yolo_brief_file(task: dict[str, Any], repo_root: pathlib.Path, orch_dir: pathlib.Path) -> pathlib.Path:
brief_dir = (orch_dir / "tmp").resolve()
brief_dir.mkdir(parents=True, exist_ok=True)
task_id = _slugify(str(task.get("id") or "task"))
fd, raw_path = tempfile.mkstemp(prefix=f"brief-{task_id}-", suffix=".tmp", dir=str(brief_dir), text=True)
with os.fdopen(fd, "w", encoding="utf-8") as handle:
handle.write(_read_brief(task, repo_root))
handle.write("\n")
os.chmod(raw_path, 0o600)
path = pathlib.Path(raw_path).resolve()
task["_brief_temp_path"] = str(path)
return path
def _resolve_result_path(task: dict[str, Any], orch_dir: pathlib.Path) -> pathlib.Path:
result_path_raw = str(task.get("result_path") or "").strip()
if result_path_raw:
result_path = (orch_dir / result_path_raw).resolve()
else:
result_path = (orch_dir / "results" / f"{task.get('id', 'task')}.json").resolve()
task["result_path"] = str(result_path.relative_to(orch_dir))
return result_path
def _resolve_worktree_base(config: dict[str, Any], repo_name: str) -> pathlib.Path:
macp_config = dict(config.get("macp") or {})
base_template = str(macp_config.get("worktree_base") or "~/src/{repo}-worktrees")
return pathlib.Path(os.path.expanduser(base_template.format(repo=repo_name))).resolve()
def _changed_files(task: dict[str, Any]) -> list[str]:
worktree_raw = str(task.get("worktree") or "").strip()
if not worktree_raw:
return []
worktree = pathlib.Path(os.path.expanduser(worktree_raw)).resolve()
if not worktree.exists():
return []
proc = subprocess.run(
["git", "-C", str(worktree), "status", "--porcelain"],
capture_output=True,
text=True,
encoding="utf-8",
)
if proc.returncode != 0:
return []
changed: list[str] = []
for line in proc.stdout.splitlines():
path_text = line[3:].strip()
if not path_text:
continue
if " -> " in path_text:
_, path_text = path_text.split(" -> ", 1)
changed.append(path_text)
return changed
def _resolve_repo_root_from_worktree(worktree: pathlib.Path) -> pathlib.Path | None:
try:
common_dir_raw = _git_capture(["git", "-C", str(worktree), "rev-parse", "--git-common-dir"], worktree)
except Exception:
return None
common_dir = pathlib.Path(common_dir_raw)
if not common_dir.is_absolute():
common_dir = (worktree / common_dir).resolve()
return common_dir.parent if common_dir.name == ".git" else common_dir
def _is_safe_worktree_path(worktree_path: pathlib.Path, config: dict[str, Any]) -> bool:
repo_root = _resolve_repo_root_from_worktree(worktree_path)
if repo_root is None:
return False
expected_base = _resolve_worktree_base(config, repo_root.name)
try:
worktree_path.resolve().relative_to(expected_base)
return True
except ValueError:
return False
def setup_worktree(task: dict[str, Any], repo_root: pathlib.Path) -> pathlib.Path:
"""Create git worktree for task. Returns worktree path."""
worktree_path = _resolve_worktree_path(task, repo_root)
branch = _resolve_branch(task)
if worktree_path.exists() and (worktree_path / ".git").exists():
return worktree_path
worktree_path.parent.mkdir(parents=True, exist_ok=True)
start_point = _resolve_start_point(repo_root)
subprocess.run(
["git", "-C", str(repo_root), "worktree", "add", "-B", branch, str(worktree_path), start_point],
check=True,
capture_output=True,
text=True,
encoding="utf-8",
)
task["worktree"] = str(worktree_path)
return worktree_path
def build_dispatch_command(task: dict[str, Any], repo_root: pathlib.Path) -> str:
"""Generate execution command based on task dispatch type and runtime."""
dispatch = _resolve_dispatch(task)
runtime = _resolve_runtime(task)
worktree = pathlib.Path(os.path.expanduser(str(task.get("worktree") or repo_root))).resolve()
if dispatch == "exec":
command = str(task.get("command") or "").strip()
if not command:
raise ValueError("MACP exec dispatch requires command")
return command
if dispatch == "acp":
raise RuntimeError("ACP dispatch requires OpenClaw integration (Phase 2)")
if dispatch == "yolo":
brief_file = pathlib.Path(str(task.get("_brief_temp_path") or "")).resolve()
if not str(task.get("_brief_temp_path") or "").strip():
raise ValueError("MACP yolo dispatch requires a staged brief file")
inner = (
'export PATH="$HOME/.config/mosaic/bin:$PATH"; '
f"cd {shlex.quote(str(worktree))}; "
f'mosaic yolo {shlex.quote(runtime)} "$(cat {shlex.quote(str(brief_file))})"'
)
return f"script -qec {shlex.quote(inner)} /dev/null"
raise ValueError(f"Unsupported MACP dispatch type: {dispatch}")
def collect_result(task: dict[str, Any], exit_code: int, gate_results: list[dict[str, Any]], orch_dir: pathlib.Path) -> dict[str, Any]:
"""Build standardized result JSON after worker completion."""
raw_status = str(task.get("status") or "")
if raw_status in {"completed", "failed", "escalated"}:
status = raw_status
else:
status = "completed" if exit_code == 0 else "failed"
completed_at = str(task.get("completed_at") or task.get("failed_at") or now_iso())
failed_at = task.get("failed_at")
if status == "failed" and not failed_at:
failed_at = now_iso()
normalized_gates: list[dict[str, Any]] = []
for gate in gate_results:
normalized_gates.append(
{
"command": str(gate.get("command") or ""),
"exit_code": int(gate.get("exit_code") or 0),
"type": str(gate.get("type") or "mechanical"),
}
)
summary_map = {
"completed": "Task completed and quality gates passed.",
"failed": "Task failed before completion.",
"escalated": "Task requires human intervention.",
}
result = {
"task_id": str(task.get("id") or ""),
"status": status,
"completed_at": completed_at,
"failed_at": failed_at,
"exit_code": exit_code,
"attempt": int(task.get("attempts") or 0),
"max_attempts": int(task.get("max_attempts") or 1),
"runtime": _resolve_runtime(task),
"dispatch": _resolve_dispatch(task),
"worktree": str(task.get("worktree")) if task.get("worktree") else None,
"branch": str(task.get("branch")) if task.get("branch") else None,
"pr": str(task.get("pr")) if task.get("pr") else None,
"summary": str(task.get("summary") or summary_map.get(status, "Task processed.")),
"files_changed": _changed_files(task),
"gate_results": normalized_gates,
"error": task.get("error"),
"escalation_reason": task.get("escalation_reason"),
"metadata": dict(task.get("metadata") or {}),
}
save_json(_resolve_result_path(task, orch_dir), result)
return result
def cleanup_worktree(task: dict[str, Any], config: dict[str, Any]) -> None:
"""Remove git worktree after task is done."""
worktree_raw = str(task.get("worktree") or "").strip()
if not worktree_raw:
return
worktree = pathlib.Path(os.path.expanduser(worktree_raw)).resolve()
if not worktree.exists():
return
repo_root = _resolve_repo_root_from_worktree(worktree)
if repo_root is None or repo_root == worktree:
return
if not _is_safe_worktree_path(worktree, config):
print(f"[macp_dispatcher] refusing to clean unsafe worktree path: {worktree}", flush=True)
return
subprocess.run(
["git", "-C", str(repo_root), "worktree", "remove", "--force", str(worktree)],
check=True,
capture_output=True,
text=True,
encoding="utf-8",
)
subprocess.run(
["git", "-C", str(repo_root), "worktree", "prune"],
check=False,
capture_output=True,
text=True,
encoding="utf-8",
)
def dispatch_task(task: dict[str, Any], repo_root: pathlib.Path, orch_dir: pathlib.Path, config: dict[str, Any]) -> tuple[int, str]:
"""Full dispatch lifecycle: setup -> execute. Returns (exit_code, output)."""
macp_config = dict(config.get("macp") or {})
worker_config = dict(config.get("worker") or {})
task["dispatch"] = _resolve_dispatch({"dispatch": task.get("dispatch") or macp_config.get("default_dispatch") or "exec"})
task["runtime"] = _resolve_runtime({"runtime": task.get("runtime") or macp_config.get("default_runtime") or worker_config.get("runtime") or "codex"})
if not str(task.get("worktree") or "").strip():
task["worktree"] = str(
_default_worktree_path(
task,
repo_root,
str(macp_config.get("worktree_base") or "~/src/{repo}-worktrees"),
)
)
if not str(task.get("result_path") or "").strip():
result_dir = str(macp_config.get("result_dir") or ".mosaic/orchestrator/results").strip()
if result_dir.startswith(".mosaic/orchestrator/"):
result_dir = result_dir[len(".mosaic/orchestrator/") :]
task["result_path"] = f"{result_dir.rstrip('/')}/{task.get('id', 'task')}.json"
if task["dispatch"] == "acp":
task["status"] = "escalated"
task["failed_at"] = now_iso()
task["escalation_reason"] = "ACP dispatch requires OpenClaw integration (Phase 2)"
task["error"] = task["escalation_reason"]
task["_timed_out"] = False
return 1, task["escalation_reason"]
worktree = setup_worktree(task, repo_root)
log_path = orch_dir / "logs" / f"{task.get('id', 'task')}.log"
timeout_sec = int(task.get("timeout_seconds") or worker_config.get("timeout_seconds") or 7200)
if task["dispatch"] == "yolo":
_stage_yolo_brief_file(task, repo_root, orch_dir)
try:
command = build_dispatch_command(task, repo_root)
exit_code, output, timed_out = _run_command(command, worktree, log_path, timeout_sec)
task["_timed_out"] = timed_out
if timed_out:
task["error"] = f"Worker command timed out after {timeout_sec}s"
elif exit_code != 0 and not task.get("error"):
task["error"] = f"Worker command failed with exit code {exit_code}"
return exit_code, output
finally:
brief_temp_path = str(task.pop("_brief_temp_path", "") or "").strip()
if brief_temp_path:
try:
pathlib.Path(brief_temp_path).unlink(missing_ok=True)
except OSError:
pass