Source code for apache_beam.error

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"""Python Dataflow error classes."""

from __future__ import absolute_import


[docs]class BeamError(Exception): """Base class for all Beam errors."""
[docs]class PipelineError(BeamError): """An error in the pipeline object (e.g. a PValue not linked to it)."""
[docs]class PValueError(BeamError): """An error related to a PValue object (e.g. value is not computed)."""
[docs]class RunnerError(BeamError): """An error related to a Runner object (e.g. cannot find a runner to run)."""
[docs]class RuntimeValueProviderError(RuntimeError): """An error related to a ValueProvider object raised during runtime."""
[docs]class SideInputError(BeamError): """An error related to a side input to a parallel Do operation."""
[docs]class TransformError(BeamError): """An error related to a PTransform object."""