File size: 2,892 Bytes
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Auto-updating casebase for TRuCAL's ethical case management.
Handles thread-safe addition of new cases to the YAML casebase.
"""
import yaml
import threading
from pathlib import Path
from typing import Optional, List, Dict, Any
class CasebaseUpdater:
"""
Thread-safe casebase management for TRuCAL's ethical case storage.
Args:
yaml_path: Path to the YAML file storing the cases
"""
def __init__(self, yaml_path: str):
self.yaml_path = Path(yaml_path)
self.yaml_path.parent.mkdir(parents=True, exist_ok=True)
self.lock = threading.Lock()
self._ensure_casebase_exists()
def _ensure_casebase_exists(self) -> None:
"""Ensure the YAML file exists with an empty list if it doesn't exist."""
if not self.yaml_path.exists():
with self.lock:
with open(self.yaml_path, 'w') as f:
yaml.safe_dump([], f)
def add_case(
self,
question: str,
answer: str,
keywords: Optional[List[str]] = None,
metadata: Optional[Dict[str, Any]] = None
) -> bool:
"""
Add a new case to the casebase in a thread-safe manner.
Args:
question: The user's question or prompt
answer: The system's response
keywords: List of keywords for matching
metadata: Additional metadata for the case
Returns:
bool: True if case was added successfully
"""
new_case = {
"question": question,
"response": answer,
"keywords": keywords or [],
"metadata": metadata or {}
}
with self.lock:
try:
# Read existing cases
with open(self.yaml_path, 'r') as f:
cases = yaml.safe_load(f) or []
# Add new case
cases.append(new_case)
# Write back to file
with open(self.yaml_path, 'w') as f:
yaml.safe_dump(cases, f, default_flow_style=False)
return True
except Exception as e:
print(f"Error adding case to casebase: {e}")
return False
def get_cases(self) -> List[Dict[str, Any]]:
"""
Retrieve all cases from the casebase.
Returns:
List of case dictionaries
"""
with self.lock:
try:
with open(self.yaml_path, 'r') as f:
return yaml.safe_load(f) or []
except Exception as e:
print(f"Error reading casebase: {e}")
return []
# Singleton instance for easy import
casebase_updater = CasebaseUpdater('data/trm_cases.yaml')
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