ilaandClaude Opus 4.8
b1f0e8aeb4
Adds configurable event.require_rapid_drop (default off), require_lower_body (default off) and horizontal_angle_threshold_degrees (default 45). With the lenient defaults a sustained horizontal pose alone enters SUSPECT and confirms after the confirm window, which is now the main false-positive guard; missing knees/ankles no longer reject the pose. Thresholds flow into config_version. End-to-end smoke confirms a lying pose; 70 tests pass. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
315 lines
11 KiB
Python
315 lines
11 KiB
Python
"""Validated, credential-safe configuration loading for Silver Pose V1."""
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import hashlib
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import json
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import os
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import re
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from dataclasses import dataclass
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from pathlib import Path
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from typing import Any, Dict
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from urllib.parse import quote
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class ConfigError(ValueError):
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"""Raised when a configuration file cannot safely start V1."""
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# Hikvision RTSP path: channel "101" = channel 1 main stream, "102" = sub stream.
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_HIK_PATH = "/Streaming/Channels/{0}"
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def build_rtsp_url(
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host: str,
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port: int,
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username: str,
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password: str,
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channel: str = "101",
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path_template: str = _HIK_PATH,
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) -> str:
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"""Build an RTSP URL, percent-encoding credentials per RFC 3986.
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Encoding the username and password means special characters such as ``@``,
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``:`` and ``/`` in a password no longer break URL parsing. The returned URL
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holds credentials and must never be logged or persisted.
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"""
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user = quote(str(username), safe="")
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secret = quote(str(password), safe="")
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path = path_template.format(quote(str(channel), safe=""))
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return "rtsp://{0}:{1}@{2}:{3}{4}".format(user, secret, host, int(port), path)
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def build_ffmpeg_options(
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transport: str = "tcp",
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timeout_seconds: float = 5.0,
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low_latency: bool = True,
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) -> str:
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"""Build the OpenCV FFmpeg capture options string from friendly settings.
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OpenCV reads ``OPENCV_FFMPEG_CAPTURE_OPTIONS`` when the stream is opened, so
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the caller must set this into the environment before ``cv2.VideoCapture``.
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Format is ``key;value`` pairs joined by ``|``.
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"""
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if transport not in ("tcp", "udp"):
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raise ValueError("transport must be 'tcp' or 'udp'")
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parts = ["rtsp_transport;{0}".format(transport)]
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if timeout_seconds and float(timeout_seconds) > 0:
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parts.append("stimeout;{0}".format(int(float(timeout_seconds) * 1_000_000)))
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if low_latency:
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parts.append("fflags;nobuffer")
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parts.append("flags;low_delay")
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return "|".join(parts)
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@dataclass(frozen=True)
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class EventConfig:
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keypoint_confidence_threshold: float
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suspect_window_seconds: float
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confirm_window_seconds: float
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recovery_window_seconds: float
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cooldown_seconds: float
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require_rapid_drop: bool = False
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require_lower_body: bool = False
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horizontal_angle_threshold_degrees: float = 45.0
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@dataclass(frozen=True)
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class AppConfig:
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source_id: str
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source_url: str
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model_path: Path
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model_sha256: str
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confidence_threshold: float
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event: EventConfig
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event_dir: Path
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source_mode: str = "stream"
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transport: str = "tcp"
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timeout_seconds: float = 5.0
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low_latency: bool = True
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@property
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def ffmpeg_capture_options(self) -> str:
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"""OpenCV FFmpeg options string to set before opening the stream."""
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return build_ffmpeg_options(self.transport, self.timeout_seconds, self.low_latency)
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@property
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def runtime_config_version(self) -> str:
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"""Return a stable, non-secret identifier for the active event settings."""
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payload = {
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"source_id": self.source_id,
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"model_sha256": self.model_sha256,
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"confidence_threshold": self.confidence_threshold,
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"event": {
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"keypoint_confidence_threshold": self.event.keypoint_confidence_threshold,
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"suspect_window_seconds": self.event.suspect_window_seconds,
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"confirm_window_seconds": self.event.confirm_window_seconds,
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"recovery_window_seconds": self.event.recovery_window_seconds,
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"cooldown_seconds": self.event.cooldown_seconds,
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"require_rapid_drop": self.event.require_rapid_drop,
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"require_lower_body": self.event.require_lower_body,
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"horizontal_angle_threshold_degrees": self.event.horizontal_angle_threshold_degrees,
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},
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}
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canonical = json.dumps(payload, sort_keys=True, separators=(",", ":"))
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return "cfg-" + hashlib.sha256(canonical.encode("utf-8")).hexdigest()
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_ENVIRONMENT_NAME = re.compile(r"^[A-Za-z_][A-Za-z0-9_]*$")
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_SHA256 = re.compile(r"^[0-9a-fA-F]{64}$")
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def _mapping(value: Any, field_name: str) -> Dict[str, Any]:
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if not isinstance(value, dict):
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raise ConfigError("{0} must be an object".format(field_name))
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return value
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def _text(value: Any, field_name: str) -> str:
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if not isinstance(value, str) or not value.strip():
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raise ConfigError("{0} must be a non-empty string".format(field_name))
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return value.strip()
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def _number(value: Any, field_name: str, minimum: float, maximum: float) -> float:
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try:
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result = float(value)
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except (TypeError, ValueError):
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raise ConfigError("{0} must be numeric".format(field_name))
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if not minimum <= result <= maximum:
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raise ConfigError(
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"{0} must be between {1} and {2}".format(field_name, minimum, maximum)
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)
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return result
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def _bool(value: Any, field_name: str) -> bool:
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if not isinstance(value, bool):
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raise ConfigError("{0} must be a boolean".format(field_name))
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return value
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def _resolve_path(config_path: Path, value: Any, field_name: str) -> Path:
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raw_path = Path(_text(value, field_name))
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if raw_path.is_absolute():
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return raw_path
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return (config_path.parent / raw_path).resolve()
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def write_local_camera_source(
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config_path: Path,
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source_id: str,
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host: str,
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port: int,
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channel: str,
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username: str,
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password: str,
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mode: str = "stream",
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transport: str = "tcp",
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timeout_seconds: float = 5.0,
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low_latency: bool = True,
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) -> Path:
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"""Persist a structured camera source into an untracked local config file.
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Only ever call this on ``config.local.json`` (git-ignored). Credentials are
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written in plaintext by design of the chosen policy; the public example must
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never receive them.
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"""
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path = Path(config_path)
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data = json.loads(path.read_text(encoding="utf-8")) if path.exists() else {}
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data["source"] = {
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"id": str(source_id),
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"host": str(host),
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"port": int(port),
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"channel": str(channel),
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"username": str(username),
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"password": str(password),
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"mode": mode,
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"transport": transport,
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"timeout_seconds": float(timeout_seconds),
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"low_latency": bool(low_latency),
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}
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path.write_text(json.dumps(data, ensure_ascii=False, indent=2) + "\n", encoding="utf-8")
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return path
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def load_config(path: Path) -> AppConfig:
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"""Load one public/local configuration pair without persisting credentials.
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The config file can name an environment variable but must not embed a source
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address. The resolved address remains in memory only.
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"""
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config_path = Path(path).resolve()
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try:
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raw = json.loads(config_path.read_text(encoding="utf-8"))
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except OSError as exc:
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raise ConfigError("cannot read config: {0}".format(exc))
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except json.JSONDecodeError as exc:
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raise ConfigError("invalid JSON config: {0}".format(exc))
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root = _mapping(raw, "config")
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source = _mapping(root.get("source"), "source")
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if "url" in source or "rtsp_url" in source:
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raise ConfigError("source must define structured host fields or rtsp_url_env, not a full URL")
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if "host" in source:
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host = _text(source.get("host"), "source.host")
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port = int(_number(source.get("port", 554), "source.port", 1.0, 65535.0))
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channel = str(source.get("channel", "101")).strip()
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if not channel:
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raise ConfigError("source.channel must be a non-empty value")
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username = _text(source.get("username"), "source.username")
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password = source.get("password")
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if not isinstance(password, str) or password == "":
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raise ConfigError("source.password must be a non-empty string")
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source_url = build_rtsp_url(host, port, username, password, channel)
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else:
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environment_name = _text(source.get("rtsp_url_env"), "source.rtsp_url_env")
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if not _ENVIRONMENT_NAME.match(environment_name):
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raise ConfigError("source.rtsp_url_env must be an environment variable name")
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source_url = os.environ.get(environment_name)
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if not source_url:
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raise ConfigError("missing RTSP environment variable: {0}".format(environment_name))
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source_mode = source.get("mode", "stream")
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if source_mode not in ("replay", "stream"):
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raise ConfigError("source.mode must be 'replay' or 'stream'")
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transport = str(source.get("transport", "tcp")).strip().lower()
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if transport not in ("tcp", "udp"):
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raise ConfigError("source.transport must be 'tcp' or 'udp'")
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timeout_seconds = _number(
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source.get("timeout_seconds", 5.0), "source.timeout_seconds", 0.0, 60.0
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)
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low_latency = source.get("low_latency", True)
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if not isinstance(low_latency, bool):
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raise ConfigError("source.low_latency must be a boolean")
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model = _mapping(root.get("model"), "model")
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model_sha256 = _text(model.get("sha256"), "model.sha256").lower()
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if not _SHA256.match(model_sha256):
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raise ConfigError("model.sha256 must be a 64-character SHA-256 value")
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event_raw = _mapping(root.get("event"), "event")
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event = EventConfig(
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keypoint_confidence_threshold=_number(
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event_raw.get("keypoint_confidence_threshold"),
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"event.keypoint_confidence_threshold",
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0.0,
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1.0,
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),
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suspect_window_seconds=_number(
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event_raw.get("suspect_window_seconds"),
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"event.suspect_window_seconds",
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0.0,
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30.0,
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),
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confirm_window_seconds=_number(
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event_raw.get("confirm_window_seconds"),
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"event.confirm_window_seconds",
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1.0,
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3.0,
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),
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recovery_window_seconds=_number(
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event_raw.get("recovery_window_seconds"),
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"event.recovery_window_seconds",
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0.0,
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300.0,
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),
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cooldown_seconds=_number(
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event_raw.get("cooldown_seconds"),
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"event.cooldown_seconds",
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0.0,
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3600.0,
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),
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require_rapid_drop=_bool(event_raw.get("require_rapid_drop", False), "event.require_rapid_drop"),
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require_lower_body=_bool(event_raw.get("require_lower_body", False), "event.require_lower_body"),
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horizontal_angle_threshold_degrees=_number(
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event_raw.get("horizontal_angle_threshold_degrees", 45.0),
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"event.horizontal_angle_threshold_degrees",
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0.0,
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90.0,
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),
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)
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artifacts = _mapping(root.get("artifacts"), "artifacts")
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return AppConfig(
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source_id=_text(source.get("id"), "source.id"),
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source_url=source_url,
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model_path=_resolve_path(config_path, model.get("path"), "model.path"),
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model_sha256=model_sha256,
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confidence_threshold=_number(
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model.get("confidence_threshold"), "model.confidence_threshold", 0.0, 1.0
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),
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event=event,
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event_dir=_resolve_path(config_path, artifacts.get("event_dir"), "artifacts.event_dir"),
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source_mode=source_mode,
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transport=transport,
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timeout_seconds=timeout_seconds,
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low_latency=low_latency,
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)
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