Send a message to a Kafka topic.

yaml
type: "io.kestra.plugin.kafka.produce"

Read a CSV file, transform it and send it to Kafka.

yaml
id: send_message_to_kafka
namespace: company.team

inputs:
  - id: file
    type: FILE
    description: A CSV file with columns: id, username, tweet, and timestamp.

tasks:
  - id: csv_to_ion
    type: io.kestra.plugin.serdes.csv.CsvToIon
    from: "{{ inputs.file }}"

  - id: ion_to_avro_schema
    type: io.kestra.plugin.scripts.nashorn.FileTransform
    from: "{{ outputs.csv_to_ion.uri }}"
    script: |
      var result = {
        "key": row.id,
        "value": {
          "username": row.username,
          "tweet": row.tweet
        },
        "timestamp": row.timestamp,
        "headers": {
          "key": "value"
        }
      };
      row = result

  - id: avro_to_kafka
    type: io.kestra.plugin.kafka.Produce
    from: "{{ outputs.ion_to_avro_schema.uri }}"
    keySerializer: STRING
    properties:
      bootstrap.servers: localhost:9092
    serdeProperties:
      schema.registry.url: http://localhost:8085
    topic: test_kestra
    valueAvroSchema: |
      {"type":"record","name":"twitter_schema","namespace":"io.kestra.examples","fields":[{"name":"username","type":"string"},{"name":"tweet","type":"string"}]}
    valueSerializer: AVRO

The content of the message to be sent to Kafka.

Can be a Kestra internal storage URI, a map (i.e. a list of key-value pairs) or a list of maps. The following keys are supported: key, value, partition, timestamp, and headers.

SubType string

Kafka connection properties.

The bootstrap.servers property is a minimal required configuration to connect to a Kafka topic. This property can reference any valid Consumer Configs or Producer Configs as key-value pairs. If you want to pass a truststore or a keystore, you must provide a base64 encoded string for ssl.keystore.location and ssl.truststore.location.

Default STRING

Possible Values

STRINGINTEGERFLOATDOUBLELONGSHORTBYTE_ARRAYBYTE_BUFFERBYTESUUIDVOIDAVROJSON

The serializer used for the value.

Possible values are: STRING, INTEGER, FLOAT, DOUBLE, LONG, SHORT, BYTE_ARRAY, BYTE_BUFFER, BYTES, UUID, VOID, AVRO, JSON.

Avro Schema if the key is set to AVRO type.

Default STRING

Possible Values

STRINGINTEGERFLOATDOUBLELONGSHORTBYTE_ARRAYBYTE_BUFFERBYTESUUIDVOIDAVROJSON

The serializer used for the key.

Possible values are: STRING, INTEGER, FLOAT, DOUBLE, LONG, SHORT, BYTE_ARRAY, BYTE_BUFFER, BYTES, UUID, VOID, AVRO, JSON.

SubType string

Default {}

Serializer configuration

Configuration that will be passed to serializer or deserializer. The avro.use.logical.type.converters is always passed when you have any values set to true.

Kafka topic to which the message should be sent.

Could also be passed inside the from property using the key topic.

Default true

Whether the producer should be transactional.

Avro Schema if the value is set to AVRO type.

Number of messages sent to a Kafka topic.