mirror of
https://github.com/bec-project/bec_widgets.git
synced 2025-07-13 19:21:50 +02:00
refactor: move RPC-related classes and modules to 'rpc' directory
This allows to break circular import, too
This commit is contained in:
@ -5,7 +5,7 @@ from __future__ import annotations
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import enum
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from typing import Literal, Optional, overload
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from bec_widgets.cli.client_utils import RPCBase, rpc_call
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from bec_widgets.cli.rpc.rpc_base import RPCBase, rpc_call
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# pylint: skip-file
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@ -7,20 +7,17 @@ import os
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import select
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import subprocess
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import threading
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import time
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import uuid
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from contextlib import contextmanager
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from dataclasses import dataclass
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from functools import wraps
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from typing import TYPE_CHECKING
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from bec_lib.client import BECClient
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from bec_lib.endpoints import MessageEndpoints
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from bec_lib.logger import bec_logger
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from bec_lib.utils.import_utils import isinstance_based_on_class_name, lazy_import, lazy_import_from
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import bec_widgets.cli.client as client
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from bec_widgets.cli.auto_updates import AutoUpdates
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from bec_widgets.cli.rpc.rpc_base import RPCBase
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if TYPE_CHECKING:
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from bec_lib.device import DeviceBase
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@ -33,37 +30,6 @@ BECDispatcher = lazy_import_from("bec_widgets.utils.bec_dispatcher", ("BECDispat
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logger = bec_logger.logger
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def rpc_call(func):
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"""
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A decorator for calling a function on the server.
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Args:
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func: The function to call.
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Returns:
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The result of the function call.
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"""
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@wraps(func)
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def wrapper(self, *args, **kwargs):
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# we could rely on a strict type check here, but this is more flexible
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# moreover, it would anyway crash for objects...
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out = []
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for arg in args:
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if hasattr(arg, "name"):
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arg = arg.name
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out.append(arg)
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args = tuple(out)
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for key, val in kwargs.items():
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if hasattr(val, "name"):
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kwargs[key] = val.name
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if not self.gui_is_alive():
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raise RuntimeError("GUI is not alive")
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return self._run_rpc(func.__name__, *args, **kwargs)
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return wrapper
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def _get_output(process, logger) -> None:
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log_func = {process.stdout: logger.debug, process.stderr: logger.error}
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stream_buffer = {process.stdout: [], process.stderr: []}
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@ -134,138 +100,6 @@ class RepeatTimer(threading.Timer):
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self.function(*self.args, **self.kwargs)
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class RPCResponseTimeoutError(Exception):
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"""Exception raised when an RPC response is not received within the expected time."""
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def __init__(self, request_id, timeout):
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super().__init__(
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f"RPC response not received within {timeout} seconds for request ID {request_id}"
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)
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class RPCBase:
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def __init__(self, gui_id: str = None, config: dict = None, parent=None) -> None:
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self._client = BECClient() # BECClient is a singleton; here, we simply get the instance
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self._config = config if config is not None else {}
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self._gui_id = gui_id if gui_id is not None else str(uuid.uuid4())[:5]
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self._parent = parent
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self._msg_wait_event = threading.Event()
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self._rpc_response = None
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super().__init__()
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# print(f"RPCBase: {self._gui_id}")
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def __repr__(self):
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type_ = type(self)
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qualname = type_.__qualname__
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return f"<{qualname} object at {hex(id(self))}>"
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@property
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def _root(self):
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"""
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Get the root widget. This is the BECFigure widget that holds
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the anchor gui_id.
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"""
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parent = self
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# pylint: disable=protected-access
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while parent._parent is not None:
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parent = parent._parent
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return parent
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def _run_rpc(self, method, *args, wait_for_rpc_response=True, timeout=3, **kwargs):
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"""
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Run the RPC call.
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Args:
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method: The method to call.
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args: The arguments to pass to the method.
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wait_for_rpc_response: Whether to wait for the RPC response.
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kwargs: The keyword arguments to pass to the method.
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Returns:
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The result of the RPC call.
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"""
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request_id = str(uuid.uuid4())
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rpc_msg = messages.GUIInstructionMessage(
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action=method,
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parameter={"args": args, "kwargs": kwargs, "gui_id": self._gui_id},
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metadata={"request_id": request_id},
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)
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# pylint: disable=protected-access
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receiver = self._root._gui_id
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if wait_for_rpc_response:
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self._rpc_response = None
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self._msg_wait_event.clear()
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self._client.connector.register(
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MessageEndpoints.gui_instruction_response(request_id),
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cb=self._on_rpc_response,
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parent=self,
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)
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self._client.connector.set_and_publish(MessageEndpoints.gui_instructions(receiver), rpc_msg)
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if wait_for_rpc_response:
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try:
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finished = self._msg_wait_event.wait(timeout)
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if not finished:
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raise RPCResponseTimeoutError(request_id, timeout)
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finally:
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self._msg_wait_event.clear()
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self._client.connector.unregister(
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MessageEndpoints.gui_instruction_response(request_id), cb=self._on_rpc_response
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)
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# get class name
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if not self._rpc_response.accepted:
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raise ValueError(self._rpc_response.message["error"])
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msg_result = self._rpc_response.message.get("result")
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self._rpc_response = None
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return self._create_widget_from_msg_result(msg_result)
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@staticmethod
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def _on_rpc_response(msg: MessageObject, parent: RPCBase) -> None:
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msg = msg.value
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parent._msg_wait_event.set()
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parent._rpc_response = msg
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def _create_widget_from_msg_result(self, msg_result):
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if msg_result is None:
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return None
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if isinstance(msg_result, list):
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return [self._create_widget_from_msg_result(res) for res in msg_result]
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if isinstance(msg_result, dict):
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if "__rpc__" not in msg_result:
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return {
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key: self._create_widget_from_msg_result(val) for key, val in msg_result.items()
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}
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cls = msg_result.pop("widget_class", None)
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msg_result.pop("__rpc__", None)
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if not cls:
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return msg_result
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cls = getattr(client, cls)
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# print(msg_result)
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return cls(parent=self, **msg_result)
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return msg_result
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def gui_is_alive(self):
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"""
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Check if the GUI is alive.
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"""
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heart = self._client.connector.get(MessageEndpoints.gui_heartbeat(self._root._gui_id))
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if heart is None:
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return False
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if heart.status == messages.BECStatus.RUNNING:
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return True
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return False
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class RepeatTimer(threading.Timer):
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def run(self):
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while not self.finished.wait(self.interval):
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self.function(*self.args, **self.kwargs)
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@contextmanager
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def wait_for_server(client):
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timeout = client._startup_timeout
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@ -35,7 +35,7 @@ from __future__ import annotations
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import enum
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from typing import Literal, Optional, overload
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from bec_widgets.cli.client_utils import RPCBase, rpc_call
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from bec_widgets.cli.rpc.rpc_base import RPCBase, rpc_call
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# pylint: skip-file"""
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0
bec_widgets/cli/rpc/__init__.py
Normal file
0
bec_widgets/cli/rpc/__init__.py
Normal file
172
bec_widgets/cli/rpc/rpc_base.py
Normal file
172
bec_widgets/cli/rpc/rpc_base.py
Normal file
@ -0,0 +1,172 @@
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from __future__ import annotations
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import threading
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import uuid
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from functools import wraps
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from bec_lib.client import BECClient
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from bec_lib.endpoints import MessageEndpoints
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from bec_lib.utils.import_utils import lazy_import, lazy_import_from
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import bec_widgets.cli.client as client
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messages = lazy_import("bec_lib.messages")
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# from bec_lib.connector import MessageObject
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MessageObject = lazy_import_from("bec_lib.connector", ("MessageObject",))
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def rpc_call(func):
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"""
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A decorator for calling a function on the server.
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Args:
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func: The function to call.
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Returns:
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The result of the function call.
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"""
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@wraps(func)
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def wrapper(self, *args, **kwargs):
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# we could rely on a strict type check here, but this is more flexible
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# moreover, it would anyway crash for objects...
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out = []
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for arg in args:
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if hasattr(arg, "name"):
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arg = arg.name
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out.append(arg)
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args = tuple(out)
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for key, val in kwargs.items():
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if hasattr(val, "name"):
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kwargs[key] = val.name
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if not self.gui_is_alive():
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raise RuntimeError("GUI is not alive")
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return self._run_rpc(func.__name__, *args, **kwargs)
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return wrapper
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class RPCResponseTimeoutError(Exception):
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"""Exception raised when an RPC response is not received within the expected time."""
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def __init__(self, request_id, timeout):
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super().__init__(
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f"RPC response not received within {timeout} seconds for request ID {request_id}"
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)
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class RPCBase:
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def __init__(self, gui_id: str = None, config: dict = None, parent=None) -> None:
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self._client = BECClient() # BECClient is a singleton; here, we simply get the instance
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self._config = config if config is not None else {}
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self._gui_id = gui_id if gui_id is not None else str(uuid.uuid4())[:5]
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self._parent = parent
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self._msg_wait_event = threading.Event()
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self._rpc_response = None
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super().__init__()
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# print(f"RPCBase: {self._gui_id}")
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def __repr__(self):
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type_ = type(self)
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qualname = type_.__qualname__
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return f"<{qualname} object at {hex(id(self))}>"
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@property
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def _root(self):
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"""
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Get the root widget. This is the BECFigure widget that holds
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the anchor gui_id.
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"""
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parent = self
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# pylint: disable=protected-access
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while parent._parent is not None:
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parent = parent._parent
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return parent
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def _run_rpc(self, method, *args, wait_for_rpc_response=True, timeout=3, **kwargs):
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"""
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Run the RPC call.
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Args:
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method: The method to call.
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args: The arguments to pass to the method.
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wait_for_rpc_response: Whether to wait for the RPC response.
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kwargs: The keyword arguments to pass to the method.
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Returns:
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The result of the RPC call.
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"""
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request_id = str(uuid.uuid4())
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rpc_msg = messages.GUIInstructionMessage(
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action=method,
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parameter={"args": args, "kwargs": kwargs, "gui_id": self._gui_id},
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metadata={"request_id": request_id},
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)
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# pylint: disable=protected-access
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receiver = self._root._gui_id
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if wait_for_rpc_response:
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self._rpc_response = None
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self._msg_wait_event.clear()
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self._client.connector.register(
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MessageEndpoints.gui_instruction_response(request_id),
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cb=self._on_rpc_response,
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parent=self,
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)
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self._client.connector.set_and_publish(MessageEndpoints.gui_instructions(receiver), rpc_msg)
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if wait_for_rpc_response:
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try:
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finished = self._msg_wait_event.wait(timeout)
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if not finished:
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raise RPCResponseTimeoutError(request_id, timeout)
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finally:
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self._msg_wait_event.clear()
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self._client.connector.unregister(
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MessageEndpoints.gui_instruction_response(request_id), cb=self._on_rpc_response
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)
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# get class name
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if not self._rpc_response.accepted:
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raise ValueError(self._rpc_response.message["error"])
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msg_result = self._rpc_response.message.get("result")
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self._rpc_response = None
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return self._create_widget_from_msg_result(msg_result)
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@staticmethod
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def _on_rpc_response(msg: MessageObject, parent: RPCBase) -> None:
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msg = msg.value
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parent._msg_wait_event.set()
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parent._rpc_response = msg
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def _create_widget_from_msg_result(self, msg_result):
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if msg_result is None:
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return None
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if isinstance(msg_result, list):
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return [self._create_widget_from_msg_result(res) for res in msg_result]
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if isinstance(msg_result, dict):
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if "__rpc__" not in msg_result:
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return {
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key: self._create_widget_from_msg_result(val) for key, val in msg_result.items()
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}
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cls = msg_result.pop("widget_class", None)
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msg_result.pop("__rpc__", None)
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if not cls:
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return msg_result
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cls = getattr(client, cls)
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# print(msg_result)
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return cls(parent=self, **msg_result)
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return msg_result
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def gui_is_alive(self):
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"""
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Check if the GUI is alive.
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"""
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heart = self._client.connector.get(MessageEndpoints.gui_heartbeat(self._root._gui_id))
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if heart is None:
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return False
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if heart.status == messages.BECStatus.RUNNING:
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return True
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return False
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@ -12,7 +12,7 @@ from bec_lib.service_config import ServiceConfig
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from bec_lib.utils.import_utils import lazy_import
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from qtpy.QtCore import Qt, QTimer
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from bec_widgets.cli.rpc_register import RPCRegister
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from bec_widgets.cli.rpc.rpc_register import RPCRegister
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from bec_widgets.utils import BECDispatcher
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from bec_widgets.utils.bec_connector import BECConnector
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from bec_widgets.widgets.containers.dock import BECDockArea
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@ -12,7 +12,7 @@ from pydantic import BaseModel, Field, field_validator
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from qtpy.QtCore import QObject, QRunnable, QThreadPool, Signal
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from qtpy.QtWidgets import QApplication
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from bec_widgets.cli.rpc_register import RPCRegister
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from bec_widgets.cli.rpc.rpc_register import RPCRegister
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from bec_widgets.qt_utils.error_popups import ErrorPopupUtility
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from bec_widgets.qt_utils.error_popups import SafeSlot as pyqtSlot
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from bec_widgets.utils.yaml_dialog import load_yaml, load_yaml_gui, save_yaml, save_yaml_gui
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@ -6,7 +6,7 @@ from pydantic import Field
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from pyqtgraph.dockarea import Dock, DockLabel
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from qtpy import QtCore, QtGui
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from bec_widgets.cli.rpc_wigdet_handler import widget_handler
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from bec_widgets.cli.rpc.rpc_widget_handler import widget_handler
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from bec_widgets.utils import ConnectionConfig, GridLayoutManager
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from bec_widgets.utils.bec_widget import BECWidget
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@ -20,7 +20,7 @@ from qtpy.QtWidgets import (
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)
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from typeguard import typechecked
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from bec_widgets.cli.rpc_wigdet_handler import widget_handler
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from bec_widgets.cli.rpc.rpc_widget_handler import widget_handler
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class LayoutManagerWidget(QWidget):
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@ -5,7 +5,7 @@ from pytestqt.exceptions import TimeoutError as QtBotTimeoutError
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from qtpy.QtCore import QTimer
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from qtpy.QtWidgets import QApplication
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from bec_widgets.cli.rpc_register import RPCRegister
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from bec_widgets.cli.rpc.rpc_register import RPCRegister
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from bec_widgets.qt_utils import error_popups
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from bec_widgets.utils import bec_dispatcher as bec_dispatcher_module
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@ -70,7 +70,7 @@ def test_client_generator_with_black_formatting():
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import enum
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from typing import Literal, Optional, overload
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from bec_widgets.cli.client_utils import RPCBase, rpc_call
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from bec_widgets.cli.rpc.rpc_base import RPCBase, rpc_call
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# pylint: skip-file
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@ -1,4 +1,4 @@
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from bec_widgets.cli.rpc_register import RPCRegister
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from bec_widgets.cli.rpc.rpc_register import RPCRegister
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class FakeObject:
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@ -1,4 +1,4 @@
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from bec_widgets.cli.rpc_wigdet_handler import RPCWidgetHandler
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from bec_widgets.cli.rpc.rpc_widget_handler import RPCWidgetHandler
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def test_rpc_widget_handler():
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