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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 pytest
from confluent_kafka.schema_registry import (record_subject_name_strategy,
SchemaRegistryClient,
topic_record_subject_name_strategy)
from confluent_kafka.schema_registry.avro import AvroSerializer, AvroDeserializer
from confluent_kafka.serialization import (MessageField,
SerializationContext)
from tests.schema_registry.conftest import COUNTER
# Mock SchemaRegistryClient, see ./conftest.py for additional details.
TEST_URL = 'http://SchemaRegistry:65534'
@pytest.fixture(autouse=True)
def reset_global_rule_registry(request):
import confluent_kafka.schema_registry.rule_registry as rule_registry
rule_registry._global_instance.clear()
def test_avro_serializer_config_auto_register_schemas():
"""
Ensures auto.register.schemas is applied
"""
conf = {'url': TEST_URL}
test_client = SchemaRegistryClient(conf)
test_serializer = AvroSerializer(
test_client, '"string"',
conf={'auto.register.schemas': False}
)
assert not test_serializer._auto_register
def test_avro_serializer_config_auto_register_schemas_invalid():
"""
Ensures auto.register.schemas is applied
"""
conf = {'url': TEST_URL}
test_client = SchemaRegistryClient(conf)
with pytest.raises(ValueError, match="must be a boolean"):
AvroSerializer(
test_client, 'string',
conf={'auto.register.schemas': dict()})
def test_avro_serializer_config_auto_register_schemas_false(mock_schema_registry):
"""
Ensures auto.register.schemas=False does not register schema
"""
conf = {'url': TEST_URL}
test_client = SchemaRegistryClient(conf)
topic = "test-auto-register"
subject = topic + '-key'
before = COUNTER['POST'].get('/subjects/{}'.format(subject), 0)
test_serializer = AvroSerializer(
test_client, '"string"',
conf={'auto.register.schemas': False})
test_serializer(
"test",
SerializationContext("test-auto-register", MessageField.KEY)
)
register_count = COUNTER['POST'].get('/subjects/{}/versions'.format(subject), 0)
assert register_count == 0
# Ensure lookup_schema was invoked instead
assert COUNTER['POST'].get('/subjects/{}'.format(subject)) - before == 1
def test_avro_serializer_config_use_latest_version(mock_schema_registry):
"""
Ensures auto.register.schemas=False does not register schema
"""
conf = {'url': TEST_URL}
test_client = SchemaRegistryClient(conf)
topic = "test-use-latest-version"
subject = topic + '-key'
before_versions = COUNTER['POST'].get('/subjects/{}/versions'.format(subject), 0)
before_latest = COUNTER['GET'].get('/subjects/{}/versions/latest'.format(subject), 0)
test_serializer = AvroSerializer(
test_client, '"string"',
conf={'auto.register.schemas': False, 'use.latest.version': True})
test_serializer(
{'name': 'Bob', 'age': 30},
SerializationContext("test-use-latest-version", MessageField.KEY)
)
register_count = COUNTER['POST'].get('/subjects/{}/versions'.format(subject), 0)
assert register_count - before_versions == 0
# Ensure latest was requested
assert COUNTER['GET'].get('/subjects/{}/versions/latest'.format(subject)) - before_latest == 1
def test_avro_serializer_config_subject_name_strategy():
"""
Ensures subject.name.strategy is applied
"""
conf = {'url': TEST_URL}
test_client = SchemaRegistryClient(conf)
test_serializer = AvroSerializer(
test_client, '"int"',
conf={'subject.name.strategy': record_subject_name_strategy})
assert test_serializer._subject_name_func is record_subject_name_strategy
def test_avro_serializer_config_subject_name_strategy_invalid():
"""
Ensures subject.name.strategy is applied
"""
conf = {'url': TEST_URL}
test_client = SchemaRegistryClient(conf)
with pytest.raises(ValueError, match="must be callable"):
AvroSerializer(
test_client, '"int"',
conf={'subject.name.strategy': dict()})
def test_avro_serializer_record_subject_name_strategy(load_avsc):
"""
Ensures record_subject_name_strategy returns the correct record name
"""
conf = {'url': TEST_URL}
test_client = SchemaRegistryClient(conf)
test_serializer = AvroSerializer(
test_client,
load_avsc('basic_schema.avsc'),
conf={'subject.name.strategy': record_subject_name_strategy})
ctx = SerializationContext('test_subj', MessageField.VALUE, [])
assert test_serializer._subject_name_func(ctx,
test_serializer._schema_name) == 'python.test.basic'
assert ctx is not None
assert not ctx.headers
def test_avro_serializer_record_subject_name_strategy_primitive(load_avsc):
"""
Ensures record_subject_name_strategy returns the correct record name.
Also verifies transformation from Avro canonical form.
"""
conf = {'url': TEST_URL}
test_client = SchemaRegistryClient(conf)
test_serializer = AvroSerializer(
test_client, '"int"',
conf={'subject.name.strategy': record_subject_name_strategy})
ctx = SerializationContext('test_subj', MessageField.VALUE, [('header1', 'header value 1'), ])
assert test_serializer._subject_name_func(ctx,
test_serializer._schema_name) == 'int'
assert ('header1', 'header value 1') in ctx.headers
def test_avro_serializer_topic_record_subject_name_strategy(load_avsc):
"""
Ensures record_subject_name_strategy returns the correct record name
"""
conf = {'url': TEST_URL}
test_client = SchemaRegistryClient(conf)
test_serializer = AvroSerializer(
test_client,
load_avsc('basic_schema.avsc'),
conf={'subject.name.strategy': topic_record_subject_name_strategy})
ctx = SerializationContext('test_subj', MessageField.VALUE)
assert test_serializer._subject_name_func(
ctx, test_serializer._schema_name) == 'test_subj-python.test.basic'
def test_avro_serializer_topic_record_subject_name_strategy_primitive(load_avsc):
"""
Ensures record_subject_name_strategy returns the correct record name.
Also verifies transformation from Avro canonical form.
"""
conf = {'url': TEST_URL}
test_client = SchemaRegistryClient(conf)
test_serializer = AvroSerializer(
test_client, '"int"',
conf={'subject.name.strategy': topic_record_subject_name_strategy})
ctx = SerializationContext('test_subj', MessageField.VALUE)
assert test_serializer._subject_name_func(
ctx, test_serializer._schema_name) == 'test_subj-int'
assert ctx is not None
assert ctx.headers is None
def test_avro_serializer_subject_name_strategy_default(load_avsc):
"""
Ensures record_subject_name_strategy returns the correct record name
"""
conf = {'url': TEST_URL}
test_client = SchemaRegistryClient(conf)
test_serializer = AvroSerializer(
test_client, load_avsc('basic_schema.avsc'))
ctx = SerializationContext('test_subj', MessageField.VALUE)
assert test_serializer._subject_name_func(
ctx, test_serializer._schema_name) == 'test_subj-value'
def test_avro_serializer_schema_loads_union(load_avsc):
"""
Ensures union types are correctly parsed
"""
conf = {'url': TEST_URL}
test_client = SchemaRegistryClient(conf)
test_serializer = AvroSerializer(
test_client,
load_avsc('union_schema.avsc'))
assert test_serializer._schema_name is None
schema = test_serializer._parsed_schema
assert isinstance(schema, list)
assert schema[0]["name"] == "RecordOne"
assert schema[1]["name"] == "RecordTwo"
def test_avro_deserializer_invalid_schema_type():
"""
Ensures invalid schema types are rejected
"""
conf = {'url': TEST_URL}
test_client = SchemaRegistryClient(conf)
with pytest.raises(TypeError, match="You must pass either schema string or schema object"):
AvroDeserializer(test_client, 1)
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