Fix #5455: Ingestion from a kafka topic fails when sample data is enabled (#5536)

Co-authored-by: ulixius9 <mayursingal9@gmail.com>

ingestion/setup.py

@@ -94,12 +94,7 @@ plugins: Dict[str, Set[str]] = {
         "thrift-sasl==0.4.3",
         "presto-types-parser==0.0.2",
     },
-    "kafka": {
+    "kafka": {"confluent_kafka==1.8.2", "fastavro>=1.2.0", "avro-python3"},
-        "confluent_kafka==1.8.2",
-        "fastavro>=1.2.0",
-        "avro-python3",
-        "confluent_avro",
-    },
     "ldap-users": {"ldap3==2.9.1"},
     "looker": {"looker-sdk>=22.4.0"},
     "mssql": {"sqlalchemy-pytds>=0.3"},

ingestion/src/metadata/ingestion/source/messaging/kafka.py

@@ -17,12 +17,8 @@ from dataclasses import dataclass, field
 from typing import Iterable, List, Optional
 
 import confluent_kafka
-from confluent_avro import AvroKeyValueSerde, SchemaRegistry
 from confluent_kafka.admin import AdminClient, ConfigResource
-from confluent_kafka.schema_registry.schema_registry_client import (
+from confluent_kafka.schema_registry.schema_registry_client import Schema
-    Schema,
-    SchemaRegistryClient,
-)
 
 from metadata.generated.schema.api.data.createTopic import CreateTopicRequest
 from metadata.generated.schema.entity.data.topic import (
@@ -190,7 +186,6 @@ class KafkaSource(Source[CreateTopicRequest]):
                 self.status.failure(topic_name, repr(err))
 
     def _parse_topic_metadata(self, topic: str) -> Optional[Schema]:
-        logger.debug(f"topic = {topic}")
         schema: Optional[Schema] = None
         try:
             registered_schema = self.schema_registry_client.get_latest_version(
@@ -203,31 +198,31 @@ class KafkaSource(Source[CreateTopicRequest]):
         return schema
 
     def _get_sample_data(self, topic_name):
+        sample_data = []
         try:
             self.consumer_client.subscribe([topic_name.__root__])
-            registry_client = SchemaRegistry(
+            logger.info(
-                self.service_connection.schemaRegistryURL,
+                f"Kafka consumer polling for sample messages in topic {topic_name.__root__}"
-                headers={"Content-Type": "application/vnd.schemaregistry.v1+json"},
             )
-            avro_serde = AvroKeyValueSerde(registry_client, topic_name.__root__)
-            logger.info("Kafka consumer polling for sample messages")
             messages = self.consumer_client.consume(num_messages=10, timeout=10)
-            sample_data = []
-            if len(messages) > 0:
-                for message in messages:
-                    sample_data.append(
-                        str(avro_serde.value.deserialize(message.value()))
-                    )
-            topic_sample_data = TopicSampleData(messages=sample_data)
-            self.consumer_client.unsubscribe()
-            return topic_sample_data
         except Exception as e:
             logger.error(
                 f"Failed to fetch sample data from topic {topic_name.__root__}"
             )
             logger.error(traceback.format_exc())
             logger.error(sys.exc_info()[2])
-        return None
+        else:
+            if messages:
+                for message in messages:
+                    sample_data.append(
+                        str(
+                            self.consumer_client._serializer.decode_message(
+                                message.value()
+                            )
+                        )
+                    )
+        self.consumer_client.unsubscribe()
+        return TopicSampleData(messages=sample_data)
 
     def on_assign(self, a_consumer, partitions):
         # get offset tuple from the first partition

ingestion/src/metadata/utils/connections.py

@@ -269,7 +269,6 @@ def _(connection: KafkaConnection, verbose: bool = False) -> KafkaClient:
     from confluent_kafka.admin import AdminClient, ConfigResource
     from confluent_kafka.avro import AvroConsumer
     from confluent_kafka.schema_registry.schema_registry_client import (
-        Schema,
         SchemaRegistryClient,
     )
 
@@ -282,11 +281,22 @@ def _(connection: KafkaConnection, verbose: bool = False) -> KafkaClient:
     if connection.schemaRegistryURL:
         connection.schemaRegistryConfig["url"] = connection.schemaRegistryURL
         schema_registry_client = SchemaRegistryClient(connection.schemaRegistryConfig)
-        admin_client_config["schema.registry.url"] = connection.schemaRegistryURL
+        connection.schemaRegistryConfig["url"] = str(connection.schemaRegistryURL)
-        admin_client_config["group.id"] = "openmetadata-consumer-1"
+        consumer_config = {
-        admin_client_config["auto.offset.reset"] = "earliest"
+            **connection.consumerConfig,
-        admin_client_config["enable.auto.commit"] = False
+            "bootstrap.servers": connection.bootstrapServers,
-        consumer_client = AvroConsumer(admin_client_config)
+        }
+        if "group.id" not in consumer_config:
+            consumer_config["group.id"] = "openmetadata-consumer"
+        if "auto.offset.reset" not in consumer_config:
+            consumer_config["auto.offset.reset"] = "earliest"
+
+        for key in connection.schemaRegistryConfig:
+            consumer_config["schema.registry." + key] = connection.schemaRegistryConfig[
+                key
+            ]
+        logger.debug(consumer_config)
+        consumer_client = AvroConsumer(consumer_config)
 
     return KafkaClient(
         admin_client=admin_client,