Kafka-connect FileStreamSourceConnector不生成主题

Question

{
  "name": "restored-exchange-rate-log",
  "config": {
    "connector.class": "org.apache.kafka.connect.file.FileStreamSourceConnector",
    "value.converter.schema.registry.url": "http://kafka-schema:8881",
    "file": "/tmp/exchange-rate-log.sink.txt",
    "format.include.keys": "true",
    "source.auto.offset.reset": "earliest",
    "tasks.max": "1",
    "value.converter.schemas.enable": "true",
    "name": "restored-exchange-rate-log",
    "topic": "restored-exchange-rate-log",
    "value.converter": "io.confluent.connect.avro.AvroConverter",
    "key.converter": "org.apache.kafka.connect.storage.StringConverter"
  },
  "tasks": [
    {
      "connector": "restored-exchange-rate-log",
      "task": 0
    }
  ],
  "type": "source"
}

这里是源连接器状态的输出：

{
  "name": "restored-exchange-rate-log",
  "connector": {
    "state": "RUNNING",
    "worker_id": "kafka-connect:8883"
  },
  "tasks": [
    {
      "state": "RUNNING",
      "id": 0,
      "worker_id": "kafka-connect:8883"
    }
  ],
  "type": "source"
}

这里是接收器连接器配置的输出：

{
    "name": "bkp-exchange-rate-log",
    "config": {
    "connector.class": "org.apache.kafka.connect.file.FileStreamSinkConnector",
    "source.auto.offset.reset": "earliest",
    "tasks.max": "1",
    "topics": "exchange-rate-log",
    "value.converter.value.subject.name.strategy": "io.confluent.kafka.serializers.subject.RecordNameStrategy",
    "value.converter.schema.registry.url": "http://kafka-schema:8881",
    "file": "/tmp/exchange-rate-log.sink.txt",
    "format.include.keys": "true",
    "value.converter.schemas.enable": "true",
    "name": "bkp-exchange-rate-log",
    "value.converter": "io.confluent.connect.avro.AvroConverter",
    "key.converter": "org.apache.kafka.connect.storage.StringConverter"
    },
    "tasks": [
    {
        "connector": "bkp-exchange-rate-log",
        "task": 0
    }
    ],
    "type": "sink"
}

这里是接收器连接器状态的输出：

{
    "name": "bkp-exchange-rate-log",
    "connector": {
    "state": "RUNNING",
    "worker_id": "kafka-connect:8883"
    },
    "tasks": [
    {
        "state": "RUNNING",
        "id": 0,
        "worker_id": "kafka-connect:8883"
    }
    ],
    "type": "sink"
}

{
  "connector.class": "org.apache.kafka.connect.file.FileStreamSinkConnector",
  "file": "/tmp/exchange-rate-log.bin",
  "format.include.keys": "true",
  "tasks.max": "1",
  "topics": "exchange-rate-log",
  "format": "binary",
  "value.converter": "com.spredfast.kafka.connect.s3.AlreadyBytesConverter",
  "key.converter": "com.spredfast.kafka.connect.s3.AlreadyBytesConverter",
  "name": "bkp-exchange-rate-log"
}

{
  "connector.class": "org.apache.kafka.connect.file.FileStreamSourceConnector",
  "file": "/tmp/exchange-rate-log.bin",
  "format.include.keys": "true",
  "tasks.max": "1",
  "format": "binary",
  "topic": "bin-test-exchange-rate-log",
  "value.converter": "com.spredfast.kafka.connect.s3.AlreadyBytesConverter",
  "key.converter": "com.spredfast.kafka.connect.s3.AlreadyBytesConverter",
  "name": "restore-exchange-rate-log"
}

Caused by: org.apache.kafka.connect.errors.DataException: bin-test-exchange-rate-log error: Not a byte array! [B@761db301
    at com.spredfast.kafka.connect.s3.AlreadyBytesConverter.fromConnectData(AlreadyBytesConverter.java:22)
    at org.apache.kafka.connect.runtime.WorkerSourceTask.lambda$convertTransformedRecord$2(WorkerSourceTask.java:269)
    at org.apache.kafka.connect.runtime.errors.RetryWithToleranceOperator.execAndRetry(RetryWithToleranceOperator.java:128)
    at org.apache.kafka.connect.runtime.errors.RetryWithToleranceOperator.execAndHandleError(RetryWithToleranceOperator.java:162)
    ... 11 more

Answer 1

我能够使用kafka-avro-console-consumer生成主题的“转储”。我们使用的是SSL+模式注册表。

下面是能够生成主题转储的命令行：

tpc=exchange-rate-log
SCHEMA_REGISTRY_OPTS="-Djavax.net.ssl.keyStore=. -Djavax.net.ssl.trustStore=. -Djavax.net.ssl.keyStorePassword=. -Djavax.net.ssl.trustStorePassword=." \
kafka-avro-console-consumer \
  --from-beginning --bootstrap-server $CONNECT_BOOTSTRAP_SERVERS \
  --property schema.registry.url=$CONNECT_SCHEMA_REGISTRY_URL \
  --topic $tpc --consumer-property security.protocol=SSL \
  --consumer-property ssl.truststore.location=/etc/ssl/kafkaproducer.truststore.jks \
  --consumer-property ssl.truststore.password=$MYPASS \
  --consumer-property ssl.keystore.location=/etc/ssl/kafkaproducer.keystore.jks \
  --consumer-property ssl.keystore.password=$MYPASS \
  --consumer-property ssl.key.password=$MYPASS \
  --property "key.separator=::-::" \
  --property "schema.id.separator=::_::" \
  --property print.schema.ids=true \
  --timeout-ms 15000 \
  --property "print.key=true" \
  --key-deserializer "org.apache.kafka.common.serialization.StringDeserializer" > $tpc.dump

但是我没有找到如何使用kafka-avro-console-producer将它导入回来的方法，因为它不能用于非avro密钥。使用这个转储文件，我可以编写一个python生成器来读取该文件并恢复主题。