53 lines
1.4 KiB
Python
53 lines
1.4 KiB
Python
"""
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Error handling and retry mechanisms for DICOM operations.
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"""
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import time
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import functools
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from retry import retry
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from utils.logger import main_logger as logger
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from config import settings
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# Define custom exceptions
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class DicomConnectionError(Exception):
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"""Error when failing to establish DICOM association."""
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pass
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class DicomQueryError(Exception):
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"""Error when C-FIND operation fails."""
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pass
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class DicomRetrieveError(Exception):
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"""Error when C-GET operation fails."""
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pass
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class DicomStoreError(Exception):
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"""Error when C-STORE operation fails."""
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pass
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def dicom_retry(exception_types=(Exception,)):
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"""
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Decorator to retry DICOM operations with exponential backoff.
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Args:
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exception_types: Tuple of exception types to retry on.
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Returns:
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Decorated function with retry logic.
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"""
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def decorator(func):
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@functools.wraps(func)
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@retry(
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exceptions=exception_types,
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tries=settings.MAX_RETRIES,
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delay=settings.RETRY_DELAY,
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backoff=2,
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logger=logger
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)
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def wrapper(*args, **kwargs):
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try:
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return func(*args, **kwargs)
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except exception_types as e:
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logger.error(f"Error in {func.__name__}: {str(e)}")
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raise
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return wrapper
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return decorator |