Anton Agestam created AVRO-3761:
-----------------------------------
Summary: UUID validation breaks nullable field
Key: AVRO-3761
URL: https://issues.apache.org/jira/browse/AVRO-3761
Project: Apache Avro
Issue Type: Bug
Components: python
Affects Versions: 1.11.1
Environment: {code:perl}
$ pip freeze | grep avro
avro==1.11.1
$ python --version
Python 3.8.16
{code}
Reporter: Anton Agestam
Using logical type UUID for a nullable field breaks when writing `None`.
{code:python}
import io
import uuid
from avro.io import DatumWriter, BinaryEncoder
import avro.schema
schema = avro.schema.parse("""
{
"name": "Metadata",
"type": "record",
"fields": [
{
"name": "topic_id",
"type": [
{
"logicalType": "uuid",
"type": "string"
},
"null"
]
}
]
}
""")
with io.BytesIO() as buffer:
writer = DatumWriter(schema)
encoder = BinaryEncoder(buffer)
# This works.
writer.write({"topic_id": uuid.uuid4().hex}, encoder)
# This breaks.
writer.write({"topic_id": None}, encoder)
{code}
Results in:
{code:perl}
Traceback (most recent call last):
File "reproduce-avro-uuid.py", line 32, in <module>
writer.write({"topic_id": None}, encoder)
File
"/Users/anton/.pyenv/versions/karapace/lib/python3.8/site-packages/avro/io.py",
line 1013, in write
validate(self.writers_schema, datum, raise_on_error=True)
File
"/Users/anton/.pyenv/versions/karapace/lib/python3.8/site-packages/avro/io.py",
line 142, in validate
validated_schema = current_node.schema.validate(current_node.datum)
File
"/Users/anton/.pyenv/versions/karapace/lib/python3.8/site-packages/avro/schema.py",
line 801, in validate
if branch.validate(datum) is not None:
File
"/Users/anton/.pyenv/versions/karapace/lib/python3.8/site-packages/avro/schema.py",
line 1048, in validate
val = uuid.UUID(datum)
File "/Users/anton/.pyenv/versions/3.8.16/lib/python3.8/uuid.py", line 165,
in __init__
raise TypeError('one of the hex, bytes, bytes_le, fields, '
TypeError: one of the hex, bytes, bytes_le, fields, or int arguments must be
given
{code}
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