core/homeassistant/components/trace/__init__.py

133 lines
3.8 KiB
Python

"""Support for script and automation tracing and debugging."""
from __future__ import annotations
from collections import deque
import datetime as dt
from itertools import count
from typing import Any
from homeassistant.core import Context
from homeassistant.helpers.trace import (
TraceElement,
script_execution_get,
trace_id_get,
trace_id_set,
trace_set_child_id,
)
import homeassistant.util.dt as dt_util
from . import websocket_api
from .const import DATA_TRACE, STORED_TRACES
from .utils import LimitedSizeDict
DOMAIN = "trace"
async def async_setup(hass, config):
"""Initialize the trace integration."""
hass.data[DATA_TRACE] = {}
websocket_api.async_setup(hass)
return True
def async_store_trace(hass, trace):
"""Store a trace if its item_id is valid."""
key = trace.key
if key[1]:
traces = hass.data[DATA_TRACE]
if key not in traces:
traces[key] = LimitedSizeDict(size_limit=STORED_TRACES)
traces[key][trace.run_id] = trace
class ActionTrace:
"""Base container for an script or automation trace."""
_run_ids = count(0)
def __init__(
self,
key: tuple[str, str],
config: dict[str, Any],
blueprint_inputs: dict[str, Any],
context: Context,
):
"""Container for script trace."""
self._trace: dict[str, deque[TraceElement]] | None = None
self._config: dict[str, Any] = config
self._blueprint_inputs: dict[str, Any] = blueprint_inputs
self.context: Context = context
self._error: Exception | None = None
self._state: str = "running"
self._script_execution: str | None = None
self.run_id: str = str(next(self._run_ids))
self._timestamp_finish: dt.datetime | None = None
self._timestamp_start: dt.datetime = dt_util.utcnow()
self.key: tuple[str, str] = key
if trace_id_get():
trace_set_child_id(self.key, self.run_id)
trace_id_set((key, self.run_id))
def set_trace(self, trace: dict[str, deque[TraceElement]]) -> None:
"""Set trace."""
self._trace = trace
def set_error(self, ex: Exception) -> None:
"""Set error."""
self._error = ex
def finished(self) -> None:
"""Set finish time."""
self._timestamp_finish = dt_util.utcnow()
self._state = "stopped"
self._script_execution = script_execution_get()
def as_dict(self) -> dict[str, Any]:
"""Return dictionary version of this ActionTrace."""
result = self.as_short_dict()
traces = {}
if self._trace:
for key, trace_list in self._trace.items():
traces[key] = [item.as_dict() for item in trace_list]
result.update(
{
"trace": traces,
"config": self._config,
"blueprint_inputs": self._blueprint_inputs,
"context": self.context,
}
)
if self._error is not None:
result["error"] = str(self._error)
return result
def as_short_dict(self) -> dict[str, Any]:
"""Return a brief dictionary version of this ActionTrace."""
last_step = None
if self._trace:
last_step = list(self._trace)[-1]
result = {
"last_step": last_step,
"run_id": self.run_id,
"state": self._state,
"script_execution": self._script_execution,
"timestamp": {
"start": self._timestamp_start,
"finish": self._timestamp_finish,
},
"domain": self.key[0],
"item_id": self.key[1],
}
if self._error is not None:
result["error"] = str(self._error)
if last_step is not None:
result["last_step"] = last_step
return result