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maziggy
4fb4e5faac
_get_mac_id() used Path.iterdir() to find a network interface for the device ID, but iteration order is non-deterministic. On different boots it could pick eth0 (MAC …3100) or wlan0 (MAC …3102), producing a different device_id each time. Since calibration is stored per device ID in the backend DB, a new ID meant registering as an uncalibrated device. Sort interfaces alphabetically so the same one is always selected.
84 lines
2.6 KiB
Python
84 lines
2.6 KiB
Python
"""Configuration loader for SpoolBuddy daemon.
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All configuration is via environment variables. The systemd service file
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or a shell wrapper sets these before launching the daemon.
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Required:
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SPOOLBUDDY_BACKEND_URL — Bambuddy server URL (e.g. http://192.168.1.100:5000)
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SPOOLBUDDY_API_KEY — API key created in Bambuddy Settings → API Keys
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Optional:
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SPOOLBUDDY_DEVICE_ID — Unique device identifier (default: derived from MAC)
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SPOOLBUDDY_HOSTNAME — Display name (default: system hostname)
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"""
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import os
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import socket
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from dataclasses import dataclass
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from pathlib import Path
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@dataclass
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class Config:
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backend_url: str = ""
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api_key: str = ""
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device_id: str = ""
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hostname: str = ""
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nfc_poll_interval: float = 0.3
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scale_read_interval: float = 0.1
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scale_report_interval: float = 1.0
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heartbeat_interval: float = 10.0
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stability_threshold: float = 2.0
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stability_window: float = 1.0
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tare_offset: int = 0
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calibration_factor: float = 1.0
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@classmethod
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def load(cls) -> "Config":
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cfg = cls()
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cfg.backend_url = os.environ.get("SPOOLBUDDY_BACKEND_URL", "")
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cfg.api_key = os.environ.get("SPOOLBUDDY_API_KEY", "")
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cfg.device_id = os.environ.get("SPOOLBUDDY_DEVICE_ID", "")
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cfg.hostname = os.environ.get("SPOOLBUDDY_HOSTNAME", "")
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if not cfg.backend_url:
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raise RuntimeError("SPOOLBUDDY_BACKEND_URL is required (e.g. http://192.168.1.100:5000)")
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if not cfg.api_key:
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raise RuntimeError("SPOOLBUDDY_API_KEY is required (create one in Bambuddy Settings → API Keys)")
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# Default device_id from MAC address
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if not cfg.device_id:
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cfg.device_id = _get_mac_id()
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# Default hostname from system
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if not cfg.hostname:
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cfg.hostname = socket.gethostname()
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return cfg
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def _get_mac_id() -> str:
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"""Generate a stable device ID from the primary network interface MAC address.
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Interfaces are sorted by name so the same interface is always picked
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regardless of filesystem iteration order (eth0 before wlan0, etc.).
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"""
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try:
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ifaces = sorted(Path("/sys/class/net").iterdir(), key=lambda p: p.name)
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for iface in ifaces:
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if iface.name == "lo":
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continue
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addr_file = iface / "address"
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if addr_file.exists():
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mac = addr_file.read_text().strip().replace(":", "")
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if mac and mac != "000000000000":
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return f"sb-{mac}"
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except Exception:
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pass
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import uuid
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return f"sb-{uuid.uuid4().hex[:12]}"
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