Files
EvoScientist-Multi/EvoScientist/cli/agent.py
T
dinos 01845f4311 refactor: route middleware display events through an injected event sink (#343)
* chore: add pytest-asyncio in auto mode

* test: migrate channel and stream tests to native async

Convert run_async() wrapper tests to plain 'async def test_*' under
pytest-asyncio auto mode. collect_events() in stream_v3_fakes becomes a
coroutine awaited at every call site.

* test: migrate command and model/middleware tests to native async

Convert run_async() wrappers (import, alias, and fixture forms) to plain
'async def test_*'. Multi-call tests merge onto one loop as sequential
awaits; none asserted on loop identity.

* test: migrate TUI, notifier, gateway, and session tests to native async

TUI/notifier/gateway files convert run_async wrappers to plain async
tests. test_sessions.py's unittest.TestCase classes move to
unittest.IsolatedAsyncioTestCase (pytest-asyncio does not await async
methods on plain TestCase; converting blindly would have made ~70 tests
silently vacuous). Its setUpClass keeps a one-shot asyncio.run() since
IsolatedAsyncioTestCase has no async class-level hook. TestLoadingWidget
in test_tui_widgets.py drops its TestCase base for the same reason.

* test: replace direct asyncio.run() calls with native async tests

Convert tests that called asyncio.run() (directly or via a local _run
helper) to plain 'async def test_*'; delete the local helpers.

* test: drop undeclared anyio markers and delete run_async helper

The @pytest.mark.anyio tests relied on anyio being a transitive dep of
httpx; auto-mode pytest-asyncio collects them natively. run_async() and
its fixture are unreferenced after the migration, so remove them —
pytest-asyncio's per-test loop teardown covers the pending-task
cancellation the helper existed for (verified: full suite runs with no
'Event loop is closed' errors or destroyed-task warnings).

* test: add autouse fixture for watcher cleanup

* refactor: remove redundant hasattr calls

* refactor: add typed middleware event sink and thread through assembly

Add MiddlewareEventSink protocol + NoOpSink in middleware/events.py
with a documented any-thread non-blocking contract (contract test uses a
deliberately-slow fake sink). Thread an optional `events` parameter
through create_cli_agent -> _get_default_middleware -> tool selector /
model fallback constructors; subagent stacks are always forced to
NoOpSink.

* refactor: inject a notifier port into async-watcher and background middleware

Add public pre_cancel_watcher() and enqueue_task_notification() to
cli/async_notifier.py and a small NotifierPort protocol
(middleware/notifier.py) that the module satisfies structurally.
AsyncWatcherMiddleware and BackgroundExecutionMiddleware now receive the
port by constructor injection at the composition root, deleting the lazy
'from ..cli import async_notifier' imports and the private
_watcher_by_thread / _enqueue pokes.

* refactor: invert tool-selection ownership onto a frontend event sink

The adaptive tool selector now reports on_tool_selection_started /
on_tool_selection / on_tool_selection_ended to the injected sink instead
of writing four process-global module variables. The frontend sink
(stream/sink.py FrontendEventSink) owns the selected/total/active state
with consume-once + dedup-vs-last-emitted semantics;
stream/tool_selection.py reads that sink object (a ToolSelectionView)
rather than reaching into tool_selector's globals.

Deleted: the 4 module globals, the cross-module mutations in
tool_selection.py, the track_stream_selection flag, the now-vestigial
_ToolSelectionTrackerMiddleware, reset_tool_selection_state_for_tests,
and the autouse conftest fixture. The sink is threaded from the two
interactive frontends through create_runtime_gateways ->
LocalGraphGateway (read side) and _load_agent -> create_cli_agent (write
side); subagent / headless stacks get NoOpSink.

* refactor: route model-fallback narration through the injected event sink

Delete the _ui_emit_fn / set_ui_emit module global and the
..stream.console import from model_fallback.py. The fallback middleware
now reports through its injected sink: the fallback transition via the
structured on_model_fallback (the frontend formats the '-> Falling back
to ...' line), and the surrounding narration (primary-failure header,
per-attempt outcome, exhaustion, non-fallbackable rejection) via
emit_fallback_notice, preserving the exact user-facing text. The TUI
binds its _append_system as the sink's fallback display where it used to
call set_ui_emit (cleared on exit); the Rich CLI's sink prints to the
console. _try_fallbacks / _guard_and_fallback take the sink.

* refactor: declare events on the GraphGateway protocol

Both gateway implementations now carry an explicit events attribute
(LangGraphServerGateway holds None — no frontend renders middleware
events across the HTTP boundary), so the four call sites use plain
attribute access instead of getattr probing an implicit contract.

* refactor: bind fallback display via the closure-scoped concrete sink

The App methods used gateway.events (typed as the read-side view) and
hasattr-probed for the concrete FrontendEventSink API. The enclosing
factory creates that sink two hundred lines up — close over it directly:
no probing, fully typed, and it becomes a constructor parameter
naturally when the App class is hoisted out of the factory.

* fix: end tool selection before fallback handler

* fix: keep fallback display errors non-fatal

* fix: preserve selector suppression for default streams

* fix: restore fallback notice console display

* refactor: consolidate fallback narration events

* refactor: clean middleware event sink plumbing

* fix: type gateway session events

* refactor: make all event protocols runtime-checkable

MiddlewareEventSink already carried @runtime_checkable (the stream
binding guard isinstance-checks it); ToolSelectionView and SessionEvents
now match, so mirroring that pattern against any of the three protocols
works instead of raising TypeError.

* fix(cli): close QuickJS workers after one-shot failures

* fix(cli): honor no-thinking in final output

* fix(channels): report failed startup accurately

* fix(channels): make Telegram cleanup idempotent

* fix(tui): skip command sync during exit

* fix(channels): preserve startup state during retries

* refactor(channels): share pending startup status

* refactor(cli): expose channel startup snapshot

* fix(tui): move channel startup off event loop

* test(channels): release retry gate on assertion failure

---------

Co-authored-by: Xi Zhang <106144707+X-iZhang@users.noreply.github.com>
2026-07-14 22:34:17 +00:00

98 lines
2.9 KiB
Python

"""Agent loading and workspace helpers."""
import os
from datetime import datetime
from pathlib import Path
from typing import TYPE_CHECKING
from ..paths import new_run_dir
if TYPE_CHECKING:
from langgraph.graph.state import CompiledStateGraph
def _shorten_path(path: str) -> str:
"""Shorten absolute path to relative path from current directory."""
if not path:
return path
try:
cwd = os.getcwd()
if path.startswith(cwd):
rel = path[len(cwd) :].lstrip(os.sep)
return (
os.path.join(os.path.basename(cwd), rel)
if rel
else os.path.basename(cwd)
)
return path
except Exception:
return path
def _deduplicate_run_name(name: str, runs_dir: Path | None = None) -> str:
"""Return *name* if available, otherwise *name_1*, *name_2*, etc."""
if runs_dir is None:
from ..paths import RUNS_DIR
runs_dir = RUNS_DIR
if not (runs_dir / name).exists():
return name
i = 1
while (runs_dir / f"{name}_{i}").exists():
i += 1
return f"{name}_{i}"
def _create_session_workspace(name: str | None = None) -> str:
"""Create a per-session workspace directory and return its path.
Args:
name: Optional human-friendly run name. Duplicates are resolved
by appending ``_1``, ``_2``, etc. Falls back to a timestamp
if *name* is None.
"""
if name:
from ..paths import RUNS_DIR
session_id = _deduplicate_run_name(name, RUNS_DIR)
else:
session_id = datetime.now().strftime("%Y%m%d_%H%M%S")
workspace_dir = str(new_run_dir(session_id))
os.makedirs(workspace_dir, exist_ok=True)
return workspace_dir
def _load_agent(
workspace_dir: str | None = None,
checkpointer=None,
config=None,
chat_model=None,
*,
on_mcp_progress=None,
events=None,
) -> "CompiledStateGraph":
"""Load the CLI agent with optional persistent checkpointer.
Args:
workspace_dir: Optional per-session workspace directory.
checkpointer: Optional LangGraph checkpointer (e.g. ``AsyncSqliteSaver``).
Falls back to ``InMemorySaver`` when ``None``.
config: Optional pre-loaded ``EvoScientistConfig``. Forwarded to
``create_cli_agent`` to avoid double config loading.
chat_model: Optional pre-built chat model. Forwarded to
``create_cli_agent``; combined with an explicit ``config`` it
selects the pure (no module-global write) build path.
on_mcp_progress: Optional per-server MCP progress callback.
Signature ``(event, server_name, detail) -> None``.
"""
from ..EvoScientist import create_cli_agent
return create_cli_agent(
workspace_dir=workspace_dir,
checkpointer=checkpointer,
config=config,
chat_model=chat_model,
on_mcp_progress=on_mcp_progress,
events=events,
)