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"""Module to control how Interactive Beam captures data from sources for
deterministic replayable PCollection evaluation and pipeline runs.
For internal use only; no backwards-compatibility guarantees.
"""
# pytype: skip-file
import logging
from datetime import timedelta
from apache_beam.io.gcp.pubsub import ReadFromPubSub
from apache_beam.runners.interactive import interactive_environment as ie
from apache_beam.runners.interactive.options import capture_limiters
_LOGGER = logging.getLogger(__name__)
[docs]class CaptureControl(object):
"""Options and their utilities that controls how Interactive Beam captures
deterministic replayable data from sources."""
def __init__(self):
self._enable_capture_replay = True
self._capturable_sources = {
ReadFromPubSub,
} # yapf: disable
self._capture_duration = timedelta(seconds=60)
self._capture_size_limit = 1e9
self._test_limiters = None
[docs] def limiters(self):
# type: () -> List[capture_limiters.Limiter]
if self._test_limiters:
return self._test_limiters
return [
capture_limiters.SizeLimiter(self._capture_size_limit),
capture_limiters.DurationLimiter(self._capture_duration)
]
[docs] def set_limiters_for_test(self, limiters):
# type: (List[capture_limiters.Limiter]) -> None
self._test_limiters = limiters
[docs]def evict_captured_data(pipeline=None):
"""Evicts all deterministic replayable data that have been captured by
Interactive Beam for the given pipeline. If no pipeline is specified, evicts
for all user defined pipelines.
In future PCollection evaluation/visualization and pipeline
runs, Interactive Beam will capture fresh data."""
if ie.current_env().options.enable_recording_replay:
_LOGGER.info(
'You have requested Interactive Beam to evict all recorded '
'data that could be deterministically replayed among multiple '
'pipeline runs.')
ie.current_env().cleanup(pipeline)