Files
home-automation/apps/rules/rules_config.py
2025-11-11 19:58:06 +01:00

123 lines
4.1 KiB
Python

"""
Rules Configuration Schema and Loader
Provides Pydantic models for validating rules.yaml configuration.
"""
from pathlib import Path
from typing import Any, Optional
import yaml
from pydantic import BaseModel, Field, field_validator
class Rule(BaseModel):
"""Single rule configuration"""
id: str = Field(..., description="Unique rule identifier")
name: Optional[str] = Field(None, description="Optional human-readable name")
type: str = Field(..., description="Rule type (e.g., 'window_setback@1.0')")
enabled: bool = Field(default=True, description="Whether this rule is enabled")
objects: dict[str, Any] = Field(default_factory=dict, description="Objects this rule monitors or controls")
params: dict[str, Any] = Field(default_factory=dict, description="Rule-specific parameters")
@field_validator('id')
@classmethod
def validate_id(cls, v: str) -> str:
if not v or not v.strip():
raise ValueError("Rule ID cannot be empty")
return v.strip()
@field_validator('type')
@classmethod
def validate_type(cls, v: str) -> str:
if not v or not v.strip():
raise ValueError("Rule type cannot be empty")
if '@' not in v:
raise ValueError(f"Rule type must include version (e.g., 'window_setback@1.0'), got: {v}")
return v.strip()
class RulesConfig(BaseModel):
"""Root configuration object"""
rules: list[Rule] = Field(..., description="List of all rules")
@field_validator('rules')
@classmethod
def validate_unique_ids(cls, rules: list[Rule]) -> list[Rule]:
"""Ensure all rule IDs are unique"""
ids = [rule.id for rule in rules]
duplicates = [id for id in ids if ids.count(id) > 1]
if duplicates:
raise ValueError(f"Duplicate rule IDs found: {set(duplicates)}")
return rules
def load_rules_config(config_path: str | Path = "config/rules.yaml") -> RulesConfig:
"""
Load and validate rules configuration from YAML file.
Args:
config_path: Path to rules.yaml file
Returns:
Validated RulesConfig object
Raises:
FileNotFoundError: If config file doesn't exist
ValueError: If YAML is invalid or validation fails
"""
config_path = Path(config_path)
if not config_path.exists():
raise FileNotFoundError(f"Rules configuration not found: {config_path}")
with open(config_path, 'r', encoding='utf-8') as f:
try:
data = yaml.safe_load(f)
except yaml.YAMLError as e:
raise ValueError(f"Invalid YAML in {config_path}: {e}") from e
if not data:
raise ValueError(f"Empty configuration file: {config_path}")
if 'rules' not in data:
raise ValueError(
f"Missing 'rules:' key in {config_path}. "
"Configuration must start with 'rules:' followed by a list of rule definitions."
)
try:
return RulesConfig(**data)
except Exception as e:
raise ValueError(f"Configuration validation failed: {e}") from e
def get_rule_by_id(config: RulesConfig, rule_id: str) -> Rule | None:
"""Get a specific rule by ID"""
for rule in config.rules:
if rule.id == rule_id:
return rule
return None
def get_rules_by_type(config: RulesConfig, rule_type: str) -> list[Rule]:
"""Get all rules of a specific type"""
return [rule for rule in config.rules if rule.type == rule_type]
if __name__ == "__main__":
# Test configuration loading
try:
config = load_rules_config()
print(f"✅ Loaded {len(config.rules)} rules:")
for rule in config.rules:
name = f" ({rule.name})" if rule.name else ""
enabled = "" if rule.enabled else ""
print(f" [{enabled}] {rule.id}{name}: {rule.type}")
if rule.objects:
obj_summary = ", ".join(f"{k}: {len(v) if isinstance(v, list) else v}"
for k, v in rule.objects.items())
print(f" Objects: {obj_summary}")
except Exception as e:
print(f"❌ Configuration error: {e}")