@oriolrius/node-red-contrib-kafka/examples/schema-producer-example.json

Node-RED Kafka nodes: Send, Receive, and Schema validation with modern KafkaJS

{
  "id": "example-schema-flow",
  "label": "Example: Kafka Schema Send",
  "nodes": [
    {
      "id": "inject-test",
      "type": "inject",
      "z": "example-flow",
      "name": "Send Test Message",
      "props": [
        {
          "p": "payload",
          "v": "{\"id\":\"sensor-001\",\"message\":\"Temperature reading\",\"timestamp\":1640995200000}",
          "vt": "json"
        }
      ],
      "repeat": "",
      "crontab": "",
      "once": false,
      "onceDelay": 0.1,
      "topic": "",
      "x": 140,
      "y": 100,
      "wires": [["schema-producer"]]
    },
    {
      "id": "schema-producer",
      "type": "hm-kafka-schema-producer",
      "z": "example-flow",
      "name": "Kafka Schema Send",
      "broker": "kafka-broker",
      "topic": "sensor-data",
      "requireAcks": 1,
      "ackTimeoutMs": 1000,
      "registryUrl": "http://localhost:8081",
      "schemaSubject": "sensor-data-value",
      "useRegistryAuth": false,
      "registryUsername": "",
      "registryPassword": "",
      "autoRegister": true,
      "autoSchema": "{\"type\":\"record\",\"name\":\"SensorData\",\"fields\":[{\"name\":\"id\",\"type\":\"string\"},{\"name\":\"message\",\"type\":\"string\"},{\"name\":\"timestamp\",\"type\":\"long\"},{\"name\":\"value\",\"type\":[\"null\",\"float\"],\"default\":null}]}",
      "validateOnly": false,
      "x": 360,
      "y": 100,
      "wires": [["debug-success"], ["debug-error"]]
    },
    {
      "id": "debug-success",
      "type": "debug",
      "z": "example-flow",
      "name": "Success",
      "active": true,
      "tosidebar": true,
      "console": false,
      "tostatus": false,
      "complete": "payload",
      "targetType": "msg",
      "statusVal": "",
      "statusType": "auto",
      "x": 580,
      "y": 80,
      "wires": []
    },
    {
      "id": "debug-error",
      "type": "debug",
      "z": "example-flow",
      "name": "Error",
      "active": true,
      "tosidebar": true,
      "console": false,
      "tostatus": false,
      "complete": "payload",
      "targetType": "msg",
      "statusVal": "",
      "statusType": "auto",
      "x": 570,
      "y": 120,
      "wires": []
    },
    {
      "id": "kafka-broker",
      "type": "hm-kafka-broker",
      "name": "Local Kafka",
      "hosts": "localhost:9092",
      "useTLS": false,
      "caCert": "",
      "clientCert": "",
      "privateKey": "",
      "passphrase": "",
      "selfSign": false,
      "useSASL": false,
      "saslMechanism": "plain",
      "saslUsername": "",
      "saslPassword": "",
      "useiot": false,
      "model": "",
      "device": "",
      "iotType": "props",
      "fields": []
    }
  ]
}