Abacn commented on code in PR #17604:
URL: https://github.com/apache/beam/pull/17604#discussion_r886088987
##########
sdks/python/apache_beam/io/avroio.py:
##########
@@ -176,20 +181,70 @@ def __init__(
name and the value being the actual data. If False, it only returns
the data.
"""
- source_from_file = partial(
+ self._source_from_file = partial(
_create_avro_source, min_bundle_size=min_bundle_size)
- self._read_all_files = filebasedsource.ReadAllFiles(
+ self._desired_bundle_size = desired_bundle_size
+ self._min_bundle_size = min_bundle_size
+ self._with_filename = with_filename
+ self.label = label
+
+ def _set_read_all_files(self):
+ """Helper function to set _read_all_files PTransform in constructor."""
+ return filebasedsource.ReadAllFiles(
True,
CompressionTypes.AUTO,
- desired_bundle_size,
- min_bundle_size,
- source_from_file,
- with_filename)
-
- self.label = label
+ self._desired_bundle_size,
+ self._min_bundle_size,
+ self._source_from_file,
+ self._with_filename)
def expand(self, pvalue):
- return pvalue | self.label >> self._read_all_files
+ return pvalue | self.label >> self._set_read_all_files()
+
+
+class ReadAllFromAvroContinuously(ReadAllFromAvro):
+ """A ``PTransform`` for reading avro files in given file patterns.
+ This PTransform acts as a Source and produces continuously a ``PCollection``
+ of strings.
+
+ For more details, see ``ReadAllFromAvro`` for avro parsing settings;
+ see ``apache_beam.io.fileio.MatchContinuously`` for watching settings.
+
+ ReadAllFromAvroContinuously is experimental. No backwards-compatibility
+ guarantees. Due to the limitation on Reshuffle, current implementation does
Review Comment:
Mentioned.
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