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#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# Copyright 2020 Confluent Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
import binascii
from io import BytesIO
import pytest
from confluent_kafka.schema_registry.protobuf import (ProtobufSerializer,
ProtobufDeserializer,
_create_msg_index)
from tests.integration.schema_registry.gen import (DependencyTestProto_pb2,
metadata_proto_pb2)
@pytest.mark.parametrize("pb2, coordinates", [
(DependencyTestProto_pb2.DependencyMessage, [0]),
(metadata_proto_pb2.ControlMessage.Watermark, [15, 1]), # [ControlMessage, Watermark]
(metadata_proto_pb2.HDFSOptions.ImportOptions.Generator.KacohaConfig,
[4, 0, 1, 2]) # [HdfsOptions, ImportOptions, Generator, KacohaConfig ]
])
def test_create_index(pb2, coordinates):
msg_idx = _create_msg_index(pb2.DESCRIPTOR)
if coordinates == [0]:
assert msg_idx == coordinates
else:
assert msg_idx[0] == len(coordinates)
assert msg_idx[1:] == coordinates
@pytest.mark.parametrize("pb2", [
DependencyTestProto_pb2.DependencyMessage,
metadata_proto_pb2.ControlMessage.Watermark,
metadata_proto_pb2.HDFSOptions.ImportOptions.Generator.KacohaConfig
])
def test_index_serialization(pb2):
msg_idx = _create_msg_index(pb2.DESCRIPTOR)
buf = BytesIO()
ProtobufSerializer._encode_uvarints(buf, msg_idx)
buf.flush()
# reset buffer cursor
buf.seek(0)
decoded_msg_idx = ProtobufDeserializer._decode_index(buf)
buf.close()
assert decoded_msg_idx == msg_idx
@pytest.mark.parametrize("msg_idx, expected_hex", [
([1, 0], b'00'), # b2a_hex always returns hex pairs
([1, 1], b'01'),
([1, 127], b'7f'),
([1, 128], b'8001'),
([1, 9223372036854775807], b'ffffffffffffffff7f')
])
def test_index_encoder(msg_idx, expected_hex):
buf = BytesIO()
ProtobufSerializer._encode_uvarints(buf, msg_idx)
buf.flush()
# ignore array length prefix
buf.seek(1)
assert binascii.b2a_hex(buf.read()) == expected_hex
# reset reader and test decoder
buf.seek(0)
assert msg_idx == ProtobufDeserializer._decode_index(buf)
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