Files
Artemis-Eapil/mcp_server/tools/device_state.py
T
weilinliu55 cbdca1497c feat: extract in-process MCP action layer, concurrent task dispatch, and spawn/reconcile hardening
- Extract device action execution into artemis/mcp action layer:
  typed ActionResult, capability manifest with startup validation,
  AdbActuator as the single physical implementation, in-memory
  ActionSession (replaces stdio subprocess MCP in validator), and
  McpActionExecutor preserving the legacy executor contract.
  adb_server keeps its external stdio/SSE surface unchanged and now
  reuses the actuator implementation; import-time side effects moved
  into configure_stdio_mode().
- Capability-gated prompt assembly (prompt_assembly.py): tool enums and
  teaching segments render per available backend tools; full-set output
  is byte-identical to the previous static text (locked by tests).
- Admin console task queue: serial worker replaced by a per-device
  concurrent dispatcher (ARTEMIS_CONCURRENCY_MODE=global restores
  serial semantics), per-session cancellation, strict device binding on
  enqueue, unified stdio piping with tee to trace stdout.log, and
  shutdown cleanup of all active runs. Fix _pid_exists exception order
  so PermissionError is treated as alive.
- mcp_server reliability: spawn watchdog kills runners stuck before
  interpreter startup and releases device reservations; task state
  reconcile uses psutil liveness, prefers runner-reported pids, and
  adds a 45s startup grace to stop false failure reports on Windows;
  conversation_id is now optional end-to-end; explicit device_serial is
  validated at submission.
- CLI install now writes ~/.claude/rules/artemis.md for Claude Code and
  migrates/removes the legacy CLAUDE.md injection block; ~/.claude.json
  is never rewritten when it fails to parse.
- Tests: Windows-portable stdio lifecycle and path assertions; new
  suites for action layer, prompt assembly, spawn watchdog, and task
  reconcile (895 passed, 3 skipped).
2026-08-27 18:25:27 -07:00

112 lines
4.5 KiB
Python

# Copyright 2026 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""MCP Tool: mobile_get_device_state."""
import base64
import os
from mcp_server.base import mcp
from artemis.mcp.adb_server import _get_controller
from mcp_server.utils import env_utils
from artemis.utils.ocr_xml_fusion import (
fuse_ocr_with_xml,
_detect_status_bar_height,
_crop_image_remove_status_bar,
_map_coordinates_back,
)
from artemis.utils.ocr_api import is_ocr_configured, perform_ocr
from artemis.utils.visualization import format_minimal_list_with_elements
@mcp.tool()
async def mobile_get_device_state(view_type: str, device_serial: str | None = None) -> str:
"""Real-time mobile device state observer (for debugging and validation).
Retrieves a real-time screenshot or a simplified UI element tree from the
target device — useful for inspecting device status or tracking a
subagent's progress.
Args:
view_type: Observation type:
- "screenshot": captures the screen, saves it to the workspace, and
returns the image's local file URI.
- "hierarchy": returns the simplified text-labeled element list —
exactly what the automation subagent sees when making decisions.
device_serial: Optional device serial (e.g. "emulator-5554") to inspect
a specific device; omitted → the default connected device. With
several devices attached, confirm the target with the user
(`adb devices -l` lists serials).
"""
try:
controller = _get_controller(device_serial=device_serial)
device_width = controller.ctx.device.device_width
device_height = controller.ctx.device.device_height
except Exception as e:
return f"Error: Failed to initialize/lock Android device controller: {e}"
try:
device_data = await controller.get_screen_data()
latest_screenshot_b64 = device_data.base64
xml_hierarchy = device_data.elements
project_root = env_utils.get_project_root()
if view_type == "screenshot":
screenshot_bytes = base64.b64decode(latest_screenshot_b64)
device_id = controller.ctx.device.device_id
safe_device_id = "".join(
[c if c.isalnum() or c in ("-", "_") else "_" for c in device_id]
)
screenshot_filename = f"live_screenshot_{safe_device_id}.jpg"
screenshot_path = os.path.join(project_root, screenshot_filename)
with open(screenshot_path, "wb") as f:
f.write(screenshot_bytes)
return f"file://{screenshot_path}"
elif view_type == "hierarchy":
ocr_results = []
if is_ocr_configured():
try:
screen_height = device_data.height
status_bar_height = _detect_status_bar_height(
xml_hierarchy, screen_height
)
if status_bar_height > 0:
cropped_b64, _, _ = _crop_image_remove_status_bar(
latest_screenshot_b64, status_bar_height
)
raw_ocr_results = await perform_ocr(cropped_b64)
ocr_results = _map_coordinates_back(
raw_ocr_results, status_bar_height
)
else:
ocr_results = await perform_ocr(latest_screenshot_b64)
except Exception:
ocr_results = []
fused_xml = fuse_ocr_with_xml(xml_hierarchy, ocr_results)
hierarchy_text, elements, labels = format_minimal_list_with_elements(
fused_xml, width=device_width, height=device_height
)
return hierarchy_text
else:
return f"Error: Invalid view_type '{view_type}'. Supported types are 'screenshot' and 'hierarchy'."
except Exception as e:
return f"Error: An unexpected error occurred while communicating with the device: {e}"