"""System-state sensor with an injectable provider for reproducible studies.""" from __future__ import annotations import os import platform from collections.abc import Callable, Mapping from dataclasses import dataclass from time import time from typing import Any, cast import psutil from .interoception import InteroceptionFrame, normalize_vital_signals from .models import JSONValue, SensorFrame SystemReadings = Callable[[int], Mapping[str, JSONValue]] @dataclass(slots=True) class SystemSensorAdapter: """Publish host measurements as a typed sensor frame. The provider is deliberately injected: production may read host metrics, while experiments can supply a deterministic trace without hidden inputs. """ provider: SystemReadings _active: bool = True sensor_id: str = "system-state-v1" modality: str = "system" @property def active(self) -> bool: return self._active def sample(self, tick: int) -> SensorFrame: if tick < 0: raise ValueError("tick must be >= 0") payload = dict(self.provider(tick)) return SensorFrame( sensor_id=self.sensor_id, tick=tick, modality=self.modality, payload=payload, ) def sample_interoception(self, tick: int) -> InteroceptionFrame: """Return typed body-relevant signals for the same deterministic sample.""" frame = self.sample(tick) if not isinstance(frame.payload, dict): raise TypeError("system sensor provider must return a mapping") return InteroceptionFrame( tick=tick, signals=normalize_vital_signals(frame.payload) ) def wall_clock_readings(tick: int) -> Mapping[str, JSONValue]: """Return the minimal live provider; richer metrics remain opt-in.""" return {"tick": tick, "unix_time": time()} def _temperature_readings() -> tuple[float | None, dict[str, JSONValue]]: reader = getattr(psutil, "sensors_temperatures", None) raw = cast(dict[str, list[Any]], reader() if callable(reader) else {}) groups: dict[str, JSONValue] = {} first: float | None = None for group, entries in raw.items(): values: list[JSONValue] = [] for entry in entries: current = getattr(entry, "current", None) if first is None and isinstance(current, (int, float)): first = float(current) values.append( { "label": str(getattr(entry, "label", "") or ""), "current_c": ( float(current) if isinstance(current, (int, float)) else None ), "high_c": ( float(getattr(entry, "high")) if isinstance(getattr(entry, "high", None), (int, float)) else None ), "critical_c": ( float(getattr(entry, "critical")) if isinstance(getattr(entry, "critical", None), (int, float)) else None ), } ) groups[str(group)] = values return first, groups def _fan_readings() -> tuple[float | None, dict[str, JSONValue]]: reader = getattr(psutil, "sensors_fans", None) raw = cast(Mapping[str, list[Any]], reader() if callable(reader) else {}) groups: dict[str, JSONValue] = {} first: float | None = None for group, entries in raw.items(): values: list[JSONValue] = [] for entry in entries: current = getattr(entry, "current", None) if first is None and isinstance(current, (int, float)): first = float(current) values.append( { "label": str(getattr(entry, "label", "") or ""), "rpm": ( float(current) if isinstance(current, (int, float)) else None ), } ) groups[str(group)] = values return first, groups def _network_interfaces() -> dict[str, JSONValue]: stats = psutil.net_if_stats() addresses = psutil.net_if_addrs() result: dict[str, JSONValue] = {} for name in sorted(set(stats) | set(addresses)): status = stats.get(name) result[name] = { "is_up": bool(status.isup) if status is not None else None, "speed_mbps": int(status.speed) if status is not None else None, "mtu": int(status.mtu) if status is not None else None, "addresses": [ { "family": str(address.family), "address": str(address.address), "netmask": str(address.netmask) if address.netmask else None, } for address in addresses.get(name, []) ], } return result def host_system_readings(tick: int) -> Mapping[str, JSONValue]: """Read real host state without contacting external services. Unsupported operating-system sensors remain ``None`` or empty mappings; this function never manufactures substitute values for missing hardware. """ temperature, temperatures = _temperature_readings() fan_rpm, fans = _fan_readings() memory = psutil.virtual_memory() swap = psutil.swap_memory() disk = psutil.disk_usage(os.path.abspath(os.sep)) disk_io = psutil.disk_io_counters() network_io = psutil.net_io_counters() interfaces = _network_interfaces() network_up = any( bool(value.get("is_up")) for value in interfaces.values() if isinstance(value, dict) ) battery_reader = getattr(psutil, "sensors_battery", None) battery = cast(Any, battery_reader() if callable(battery_reader) else None) frequency = cast(Any, psutil.cpu_freq()) per_cpu = psutil.cpu_percent(interval=None, percpu=True) load_average_reader = cast( Callable[[], tuple[float, float, float]] | None, getattr(os, "getloadavg", None), ) try: load_average: JSONValue = ( [float(value) for value in load_average_reader()] if callable(load_average_reader) else None ) except OSError: load_average = None return { "tick": tick, "unix_time": time(), "platform": platform.system(), "platform_release": platform.release(), "machine": platform.machine(), "processor": platform.processor() or None, "hostname": platform.node() or None, "boot_time": psutil.boot_time(), "cpu_percent": psutil.cpu_percent(interval=None), "cpu_percent_per_core": [float(value) for value in per_cpu], "cpu_logical_count": psutil.cpu_count(logical=True), "cpu_physical_count": psutil.cpu_count(logical=False), "cpu_frequency_mhz": ( float(frequency.current) if frequency is not None else None ), "cpu_frequency_min_mhz": ( float(frequency.min) if frequency is not None else None ), "cpu_frequency_max_mhz": ( float(frequency.max) if frequency is not None else None ), "load_average": load_average, "memory_percent": memory.percent, "memory_total_bytes": memory.total, "memory_available_bytes": memory.available, "memory_used_bytes": memory.used, "swap_percent": swap.percent, "swap_total_bytes": swap.total, "swap_used_bytes": swap.used, "temperature_c": temperature, "temperatures": temperatures, "disk_total_bytes": disk.total, "disk_used_bytes": disk.used, "disk_free_bytes": disk.free, "disk_percent": disk.percent, "disk_read_bytes": disk_io.read_bytes if disk_io is not None else None, "disk_write_bytes": disk_io.write_bytes if disk_io is not None else None, "disk_read_count": disk_io.read_count if disk_io is not None else None, "disk_write_count": disk_io.write_count if disk_io is not None else None, "network_up": network_up, "network_interfaces": interfaces, "network_bytes_sent": network_io.bytes_sent, "network_bytes_received": network_io.bytes_recv, "network_packets_sent": network_io.packets_sent, "network_packets_received": network_io.packets_recv, "network_errors_in": network_io.errin, "network_errors_out": network_io.errout, "battery_percent": battery.percent if battery is not None else None, "battery_plugged": battery.power_plugged if battery is not None else None, "battery_seconds_left": battery.secsleft if battery is not None else None, "fan_rpm": fan_rpm, "fans": fans, "process_count": len(psutil.pids()), } __all__ = [ "InteroceptionFrame", "SystemReadings", "SystemSensorAdapter", "host_system_readings", "wall_clock_readings", ]