lang/py/avro/test/gen_interop_data.py

#!/usr/bin/env python

##
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# to you under the Apache License, Version 2.0 (the
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#
#     https://www.apache.org/licenses/LICENSE-2.0
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from __future__ import absolute_import, division, print_function

import os
import sys

import avro.datafile
import avro.io
import avro.schema
from avro.codecs import Codecs

try:
    unicode
except NameError:
    unicode = str

NULL_CODEC = 'null'
CODECS_TO_VALIDATE = Codecs.supported_codec_names()

DATUM = {
    'intField': 12,
    'longField': 15234324,
    'stringField': unicode('hey'),
    'boolField': True,
    'floatField': 1234.0,
    'doubleField': -1234.0,
    'bytesField': b'12312adf',
    'nullField': None,
    'arrayField': [5.0, 0.0, 12.0],
    'mapField': {unicode('a'): {'label': unicode('a')},
                 unicode('bee'): {'label': unicode('cee')}},
    'unionField': 12.0,
    'enumField': 'C',
    'fixedField': b'1019181716151413',
    'recordField': {'label': unicode('blah'),
                    'children': [{'label': unicode('inner'), 'children': []}]},
}


def generate(schema_path, output_path):
    with open(schema_path, 'r') as schema_file:
        interop_schema = avro.schema.parse(schema_file.read())
    for codec in CODECS_TO_VALIDATE:
        filename = output_path
        if codec != NULL_CODEC:
            base, ext = os.path.splitext(output_path)
            filename = base + "_" + codec + ext
        with avro.datafile.DataFileWriter(open(filename, 'wb'), avro.io.DatumWriter(),
                                          interop_schema, codec=codec) as dfw:
            dfw.append(DATUM)


if __name__ == "__main__":
    generate(sys.argv[1], sys.argv[2])