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d03acd7270
Co-authored-by: Yury Selivanov <yury@edgedb.com> Co-authored-by: Andrew Svetlov <andrew.svetlov@gmail.com>
63 lines
1.7 KiB
Python
63 lines
1.7 KiB
Python
"""asyncio exceptions."""
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__all__ = ('BrokenBarrierError',
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'CancelledError', 'InvalidStateError', 'TimeoutError',
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'IncompleteReadError', 'LimitOverrunError',
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'SendfileNotAvailableError')
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class CancelledError(BaseException):
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"""The Future or Task was cancelled."""
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TimeoutError = TimeoutError # make local alias for the standard exception
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class InvalidStateError(Exception):
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"""The operation is not allowed in this state."""
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class SendfileNotAvailableError(RuntimeError):
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"""Sendfile syscall is not available.
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Raised if OS does not support sendfile syscall for given socket or
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file type.
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"""
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class IncompleteReadError(EOFError):
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"""
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Incomplete read error. Attributes:
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- partial: read bytes string before the end of stream was reached
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- expected: total number of expected bytes (or None if unknown)
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"""
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def __init__(self, partial, expected):
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r_expected = 'undefined' if expected is None else repr(expected)
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super().__init__(f'{len(partial)} bytes read on a total of '
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f'{r_expected} expected bytes')
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self.partial = partial
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self.expected = expected
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def __reduce__(self):
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return type(self), (self.partial, self.expected)
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class LimitOverrunError(Exception):
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"""Reached the buffer limit while looking for a separator.
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Attributes:
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- consumed: total number of to be consumed bytes.
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"""
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def __init__(self, message, consumed):
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super().__init__(message)
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self.consumed = consumed
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def __reduce__(self):
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return type(self), (self.args[0], self.consumed)
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class BrokenBarrierError(RuntimeError):
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"""Barrier is broken by barrier.abort() call."""
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