def __init__(self, driver, nameSalt):
self.driver = driver
self.fileName = "travis_correct_confluent_protobuf_protobuf"
self.topic = self.fileName + nameSalt
self.sensor = sensor_pb2.SensorReading()
self.sensor.dateTime = 1234
self.sensor.reading = 321.321
self.sensor.device.deviceID = "555-4321"
self.sensor.device.enabled = True
self.sensor.float_val = 4321.4321
self.sensor.int32_val = (1 << 31) - 1
self.sensor.sint32_val = (1 << 31) - 1
self.sensor.sint64_val = (1 << 63) - 1
self.sensor.uint32_val = (1 << 32) - 1
self.sensor.bytes_val = b'\xDE\xAD'
self.sensor.double_array_val.extend([1 / 3, 32.21, 434324321])
self.sensor.uint64_val = (1 << 64) - 1
self.schema_registry_client = SchemaRegistryClient(
{'url': driver.schemaRegistryAddress})
self.keyProtobufSerializer = ProtobufSerializer(
sensor_pb2.SensorReading, self.schema_registry_client)
self.valueProtobufSerializer = ProtobufSerializer(
sensor_pb2.SensorReading, self.schema_registry_client)
producer_conf = {
'bootstrap.servers': driver.kafkaAddress,
'key.serializer': self.keyProtobufSerializer,
'value.serializer': self.valueProtobufSerializer
}
self.protobufProducer = SerializingProducer(producer_conf)
def _make_serializer(self):
return {
SchemaType.AVRO:
AvroSerializer(self.sr_client, AVRO_SCHEMA),
SchemaType.PROTOBUF:
ProtobufSerializer(ProtobufPayloadClass, self.sr_client)
}[self.schema_type]
def test_protobuf_deserializer_type_mismatch(kafka_cluster):
"""
Ensures an Exception is raised when deserializing an unexpected type.
"""
pb2_1 = PublicTestProto_pb2.TestMessage
pb2_2 = metadata_proto_pb2.HDFSOptions
sr = kafka_cluster.schema_registry()
topic = kafka_cluster.create_topic("serialization-proto-refs")
serializer = ProtobufSerializer(pb2_1, sr)
deserializer = ProtobufDeserializer(pb2_2)
producer = kafka_cluster.producer(key_serializer=serializer)
consumer = kafka_cluster.consumer(key_deserializer=deserializer)
consumer.assign([TopicPartition(topic, 0)])
def dr(err, msg):
print("dr msg {} {}".format(msg.key(), msg.value()))
producer.produce(topic,
key=pb2_1(test_string='abc',
test_bool=True,
test_bytes=b'def'),
partition=0)
producer.flush()
with pytest.raises(ConsumeError, match="Error parsing message"):
consumer.poll()
def getConfigs():
sr_client_props = {
'url': '<CCLOUD_SR_DNS>',
'basic.auth.user.info': '<CCLOUD_SR_KEY>:<CCLOUD_SR_SECRET>'
}
sr_client = SchemaRegistryClient(sr_client_props)
value_serializer = ProtobufSerializer(FoodPreferences_pb2.PersonFood,
sr_client)
configs = {
'bootstrap.servers': '<CCLOUD_DNS>',
'security.protocol': 'SASL_SSL',
'sasl.mechanism': 'PLAIN',
'sasl.username': '******',
'sasl.password': '******',
'client.id': 'pythonProduction',
'compression.type': 'zstd',
'retries': '10',
'linger.ms': '5',
'key.serializer': StringSerializer('utf_8'),
'value.serializer': value_serializer
}
return configs
def test_protobuf_message_serialization(kafka_cluster, pb2, data):
"""
Validates that we get the same message back that we put in.
"""
topic = kafka_cluster.create_topic("serialization-proto")
sr = kafka_cluster.schema_registry()
value_serializer = ProtobufSerializer(pb2, sr,
{'use.deprecated.format': False})
value_deserializer = ProtobufDeserializer(pb2,
{'use.deprecated.format': False})
producer = kafka_cluster.producer(value_serializer=value_serializer)
consumer = kafka_cluster.consumer(value_deserializer=value_deserializer)
consumer.assign([TopicPartition(topic, 0)])
expect = pb2(**data)
producer.produce(topic, value=expect, partition=0)
producer.flush()
msg = consumer.poll()
actual = msg.value()
assert [getattr(expect, k) == getattr(actual, k) for k in data.keys()]
def __protobuf_serializer(self):
schema_registry_conf = {'url': self.config['schemaregistry.url']}
schema_registry_client = SchemaRegistryClient(schema_registry_conf)
_proto_conf = {
'auto.register.schemas': self.config['auto.register.schemas'],
}
return ProtobufSerializer(self.config['proto_msg_type'],
schema_registry_client,
conf=_proto_conf)
def test_protobuf_reference_registration(kafka_cluster, pb2, expected_refs):
"""
Registers multiple messages with dependencies then queries the Schema
Registry to ensure the references match up.
"""
sr = kafka_cluster.schema_registry()
topic = kafka_cluster.create_topic("serialization-proto-refs")
serializer = ProtobufSerializer(pb2, sr)
producer = kafka_cluster.producer(key_serializer=serializer)
producer.produce(topic, key=pb2(), partition=0)
producer.flush()
registered_refs = sr.get_schema(serializer._schema_id).references
assert expected_refs.sort() == [ref.name for ref in registered_refs].sort()
def test_protobuf_serializer_type_mismatch(kafka_cluster):
"""
Ensures an Exception is raised when deserializing an unexpected type.
"""
pb2_1 = TestProto_pb2.TestMessage
pb2_2 = NestedTestProto_pb2.NestedMessage
sr = kafka_cluster.schema_registry()
topic = kafka_cluster.create_topic("serialization-proto-refs")
serializer = ProtobufSerializer(pb2_1, sr)
producer = kafka_cluster.producer(key_serializer=serializer)
with pytest.raises(KafkaException,
match=r"message must be of type <class"
r" 'TestProto_pb2.TestMessage'\> not \<class"
r" 'NestedTestProto_pb2.NestedMessage'\>"):
producer.produce(topic, key=pb2_2())
def main(args):
topic = args.topic
schema_registry_conf = {'url': args.schema_registry}
schema_registry_client = SchemaRegistryClient(schema_registry_conf)
protobuf_serializer = ProtobufSerializer(user_pb2.User,
schema_registry_client,
{'use.deprecated.format': True})
producer_conf = {
'bootstrap.servers': args.bootstrap_servers,
'key.serializer': StringSerializer('utf_8'),
'value.serializer': protobuf_serializer
}
producer = SerializingProducer(producer_conf)
print("Producing user records to topic {}. ^C to exit.".format(topic))
while True:
# Serve on_delivery callbacks from previous calls to produce()
producer.poll(0.0)
try:
user_name = input("Enter name: ")
user_favorite_number = int(input("Enter favorite number: "))
user_favorite_color = input("Enter favorite color: ")
user = user_pb2.User(name=user_name,
favorite_color=user_favorite_color,
favorite_number=user_favorite_number)
producer.produce(topic=topic,
partition=0,
key=str(uuid4()),
value=user,
on_delivery=delivery_report)
except (KeyboardInterrupt, EOFError):
break
except ValueError:
print("Invalid input, discarding record...")
continue
print("\nFlushing records...")
producer.flush()
from uuid import uuid4
# Protobuf generated class; resides at ./meal_pb2.py
# Create it by running
# protoc -I=. --python_out=. ./meal.proto
import meal_pb2
from confluent_kafka import SerializingProducer
from confluent_kafka.serialization import StringSerializer
from confluent_kafka.schema_registry import SchemaRegistryClient
from confluent_kafka.schema_registry.protobuf import ProtobufSerializer
topic = 'meal'
schema_registry_client = SchemaRegistryClient({'url': 'http://t620.lan:8081'})
protobuf_serializer = ProtobufSerializer(meal_pb2.Meal, schema_registry_client)
producer_conf = {
'bootstrap.servers': 't620.lan:9092',
'key.serializer': StringSerializer('utf_8'),
'value.serializer': protobuf_serializer
}
producer = SerializingProducer(producer_conf)
producer.poll(0.0)
mybeer = meal_pb2.Meal.DrinkItems(drink_name="beer")
mywine = meal_pb2.Meal.DrinkItems(drink_name="wine")
meal = meal_pb2.Meal(name='pizza', drink=[mybeer, mywine])
def get_protobuf_serializer(self,
msg_type,
schema_registry_client,
conf=None):
return ProtobufSerializer(msg_type, schema_registry_client, conf)
from uuid import uuid4
epic = "CHART:CS.D.EURUSD.MINI.IP:1MINUTE"
config_file = 'librdkafka.config'
topic = "eurusd"
conf = ccloud_lib.read_ccloud_config(config_file)
# Create topic if needed
ccloud_lib.create_topic(conf, topic)
delivered_records = 0
schema_registry_conf = {
'url': conf['schema.registry.url'],
'basic.auth.user.info': conf['schema.registry.basic.auth.user.info']
}
schema_registry_client = SchemaRegistryClient(schema_registry_conf)
protobuf_serializer = ProtobufSerializer(lightbringer_pb2.CandlePrice,
schema_registry_client)
producer_conf = {
'bootstrap.servers': conf['bootstrap.servers'],
'sasl.mechanisms': conf['sasl.mechanisms'],
'security.protocol': conf['security.protocol'],
'sasl.username': conf['sasl.username'],
'sasl.password': conf['sasl.password'],
'key.serializer': StringSerializer('utf_8'),
'value.serializer': protobuf_serializer
}
producer = SerializingProducer(producer_conf)
print("Producing user records to topic {}. ^C to exit.".format(topic))
#///////////////////////////////////////////////
def delivery_report(err, msg):