I think you may need to adjust it as follows:
schema_txt = """
{
"name": "Test",
"type": "record",
"fields": [
{ "name": "Suit", "type": {"enum",
"name": "Suit",
"symbols" : ["SPADES", "HEARTS", "DIAMONDS", "CLUBS"]
}
}
]
}
"""
On Mon, May 11, 2020 at 2:06 PM Charles Cazabon <
[email protected]> wrote:
> Hi,
>
> I'm using avro_python3-1.9.2.1 with Python 3. I have a custom record
> schema
> that I would like to include an enum field in, but I get a
> SchemaParseException when I do so.
>
> For a minimal test case, using the example from the Python getting started
> guide as a complete schema is successful:
>
> schema_txt = """
> { "type": "enum",
> "name": "Suit",
> "symbols" : ["SPADES", "HEARTS", "DIAMONDS", "CLUBS"]
> }
> """
>
> test_schema = avro.schema.parse(schema_txt) # success
>
> However, if I create a record schema with such an enum as a member field
> (here
> the only field, but behaviour is the same with other fields present):
>
> schema_txt = """
> {
> "name": "Test",
> "type": "record",
> "fields": [
> { "type": "enum",
> "name": "Suit",
> "symbols" : ["SPADES", "HEARTS", "DIAMONDS", "CLUBS"]
> }
> ]
> }
> """
>
> ... then avro.schema.parse() fails with:
>
> Traceback (most recent call last):
> File "./simple-schema.py", line 43, in <module>
> test_schema = avro.schema.parse(schema_txt)
> File ".../.venv/lib/python3.7/site-packages/avro/schema.py", line 1244,
> in parse
> return SchemaFromJSONData(json_data, names)
> File ".../.venv/lib/python3.7/site-packages/avro/schema.py", line 1215,
> in SchemaFromJSONData
> return parser(json_data, names=names)
> File ".../.venv/lib/python3.7/site-packages/avro/schema.py", line 1143,
> in _SchemaFromJSONObject
> other_props=other_props,
> File ".../.venv/lib/python3.7/site-packages/avro/schema.py", line 1022,
> in __init__
> fields = make_fields(names=nested_names)
> File ".../.venv/lib/python3.7/site-packages/avro/schema.py", line 1134,
> in MakeFields
> return tuple(RecordSchema._MakeFieldList(field_desc_list, names))
> File ".../.venv/lib/python3.7/site-packages/avro/schema.py", line 947,
> in _MakeFieldList
> yield RecordSchema._MakeField(index, field_desc, names)
> File ".../.venv/lib/python3.7/site-packages/avro/schema.py", line 918,
> in _MakeField
> names=names,
> File ".../.venv/lib/python3.7/site-packages/avro/schema.py", line 1215,
> in SchemaFromJSONData
> return parser(json_data, names=names)
> File ".../.venv/lib/python3.7/site-packages/avro/schema.py", line 1096,
> in _SchemaFromJSONString
> % (json_string, sorted(names.names)))
> avro.schema.SchemaParseException: Unknown named schema 'enum', known
> names: ['Test'].
>
>
> What am I doing wrong?
>
> I've looked through the last six months of the avro users' list archive.
> The
> search function for the list appears to be offline so I haven't dug further
> than that. Haven't found anything relevant with web searches either.
>
> Any help appreciated.
>
> Thanks,
>
> Charles
> --
> ------------------------------------------------------------------
> Charles Cazabon <[email protected]>
> Software, consulting, and services available at http://pyropus.ca/
> ------------------------------------------------------------------
>
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