58 lines
1.4 KiB
Python
58 lines
1.4 KiB
Python
"""Utility functions."""
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from typing import List, TypeVar, Callable
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import json
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T = TypeVar('T')
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def validate_input(data: dict, required_fields: List[str]) -> bool:
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"""Validate that all required fields are present."""
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for field in required_fields:
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if field not in data:
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return False
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return True
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def parse_json_safe(json_string: str, default: T = None) -> T:
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"""Safely parse JSON string."""
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try:
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return json.loads(json_string)
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except (json.JSONDecodeError, TypeError):
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return default
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def retry_operation(func: Callable, max_retries: int = 3, delay: float = 1.0):
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"""Retry an operation with exponential backoff."""
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import time
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for attempt in range(max_retries):
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try:
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return func()
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except Exception as e:
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if attempt == max_retries - 1:
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raise e
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time.sleep(delay * (2 ** attempt))
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return None
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class Logger:
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"""Simple logger utility."""
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def __init__(self, name: str):
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self.name = name
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def info(self, message: str) -> None:
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"""Log info message."""
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print(f"[INFO] [{self.name}] {message}")
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def error(self, message: str) -> None:
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"""Log error message."""
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print(f"[ERROR] [{self.name}] {message}")
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def debug(self, message: str) -> None:
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"""Log debug message."""
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print(f"[DEBUG] [{self.name}] {message}")
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