Source code for

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"""Utility classes used by the DirectRunner.

For internal use only. No backwards compatibility guarantees.

from __future__ import absolute_import

[docs]class TransformResult(object): """Result of evaluating an AppliedPTransform with a TransformEvaluator.""" def __init__(self, transform_evaluator, uncommitted_output_bundles, unprocessed_bundles, counters, keyed_watermark_holds, undeclared_tag_values=None): self.transform = transform_evaluator._applied_ptransform self.uncommitted_output_bundles = uncommitted_output_bundles self.unprocessed_bundles = unprocessed_bundles self.counters = counters # Mapping of key -> earliest hold timestamp or None. Keys should be # strings or None. # # For each key, we receive as its corresponding value the earliest # watermark hold for that key (the key can be None for global state), past # which the output watermark for the currently-executing step will not # advance. If the value is None or utils.timestamp.MAX_TIMESTAMP, the # watermark hold will be removed. self.keyed_watermark_holds = keyed_watermark_holds or {} # Only used when caching (materializing) all values is requested. self.undeclared_tag_values = undeclared_tag_values # Populated by the TransformExecutor. self.logical_metric_updates = None step_context = transform_evaluator._execution_context.get_step_context() self.partial_keyed_state = step_context.partial_keyed_state
[docs]class TimerFiring(object): """A single instance of a fired timer.""" def __init__(self, encoded_key, window, name, time_domain, timestamp): self.encoded_key = encoded_key self.window = window = name self.time_domain = time_domain self.timestamp = timestamp
[docs]class KeyedWorkItem(object): """A keyed item that can either be a timer firing or a list of elements.""" def __init__(self, encoded_key, timer_firings=None, elements=None): self.encoded_key = encoded_key self.timer_firings = timer_firings or [] self.elements = elements or []