88 lines
2.8 KiB
Python
88 lines
2.8 KiB
Python
"""All queries for logbook."""
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from __future__ import annotations
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from sqlalchemy import lambda_stmt
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from sqlalchemy.sql.elements import ColumnElement
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from sqlalchemy.sql.lambdas import StatementLambdaElement
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from sqlalchemy.sql.selectable import Select
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from homeassistant.components.recorder.db_schema import (
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LAST_UPDATED_INDEX_TS,
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Events,
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States,
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)
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from .common import (
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apply_states_filters,
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legacy_select_events_context_id,
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select_events_without_states,
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select_states,
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)
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def all_stmt(
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start_day: float,
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end_day: float,
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event_types: tuple[str, ...],
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states_entity_filter: ColumnElement | None = None,
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events_entity_filter: ColumnElement | None = None,
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context_id: str | None = None,
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) -> StatementLambdaElement:
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"""Generate a logbook query for all entities."""
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stmt = lambda_stmt(
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lambda: select_events_without_states(start_day, end_day, event_types)
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)
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if context_id is not None:
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# Once all the old `state_changed` events
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# are gone from the database remove the
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# _legacy_select_events_context_id()
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stmt += lambda s: s.where(Events.context_id == context_id).union_all(
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_states_query_for_context_id(
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start_day,
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end_day,
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# https://github.com/python/mypy/issues/2608
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context_id, # type:ignore[arg-type]
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),
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legacy_select_events_context_id(
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start_day,
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end_day,
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# https://github.com/python/mypy/issues/2608
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context_id, # type:ignore[arg-type]
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),
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)
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else:
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if events_entity_filter is not None:
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stmt += lambda s: s.where(events_entity_filter)
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if states_entity_filter is not None:
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stmt += lambda s: s.union_all(
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_states_query_for_all(start_day, end_day).where(
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# https://github.com/python/mypy/issues/2608
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states_entity_filter # type:ignore[arg-type]
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)
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)
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else:
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stmt += lambda s: s.union_all(_states_query_for_all(start_day, end_day))
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stmt += lambda s: s.order_by(Events.time_fired_ts)
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return stmt
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def _states_query_for_all(start_day: float, end_day: float) -> Select:
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return apply_states_filters(_apply_all_hints(select_states()), start_day, end_day)
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def _apply_all_hints(sel: Select) -> Select:
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"""Force mysql to use the right index on large selects."""
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return sel.with_hint(
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States, f"FORCE INDEX ({LAST_UPDATED_INDEX_TS})", dialect_name="mysql"
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)
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def _states_query_for_context_id(
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start_day: float, end_day: float, context_id: str
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) -> Select:
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return apply_states_filters(select_states(), start_day, end_day).where(
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States.context_id == context_id
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)
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