如何在debezium中设置kafka连接器以使用自定义转换?

agyaoht7  于 2021-06-04  发布在  Kafka
关注(0)|答案(1)|浏览(699)

我是Kafka的新手,我不知道如何使用“transforms.router.type”使它与我的debezium设置一起工作。所以我做了一个特殊的事件转换java类,并预先进行了配置,以便将其部署到容器中,如下所示:
curl -x柱-h“accept:application/json“-h”内容-type:application/json" localhost:8083/connectors/ -d级

{
  "name": "task-connector",
  "config": {
    "connector.class": "io.debezium.connector.postgresql.PostgresConnector",
    "tasks.max": "1",
    "slot.name" : "task_engine_saga",
    "database.hostname": "postgres",
    "database.port": "5432",
    "database.user": "postgres",
    "database.password": "postgres",
    "database.dbname" : "tasks",
    "schema.whitelist": "public",
    "table.whitelist" : "public.task",
    "tombstones.on.delete" : "false",
    "transforms" : "router",
    "transforms.router.type" : "com.task.connect.TaskEventRouter"
  }
}

回复说找不到这个配置。

CREATE kafka connector task-connector....
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100  1091  100   516  100   575   8322   9274 --:--:-- --:--:-- --:--:-- 17596{"error_code":400,"message":"Connector configuration is invalid and contains the following 3 error(s):\nInvalid value com.task.connect.TaskEventRouter for configuration transforms.router.type: Class com.task.connect.TaskEventRouter could not be found.\nInvalid value null for configuration transforms.router.type: Not a Transformation\nA value is required\nYou can also find the above list of errors at the endpoint `/connector-plugins/{connectorType}/config/validate`"}

然后我复制到container/connect目录下我的主机文件夹和jar文件,在其中我有一个带有事件转换逻辑的java类,但它也没有帮助。有人能帮我,告诉我该怎么做,使这个自定义transforms.router.type与我的debezium设置工作?
我的容器docker compose设置:

version: '3'
services:
    pgadmin:
        container_name: pgadmin_container
        image: dpage/pgadmin4
        environment:
            PGADMIN_DEFAULT_EMAIL: ${PGADMIN_DEFAULT_EMAIL:-pgadmin4@pgadmin.org}
            PGADMIN_DEFAULT_PASSWORD: ${PGADMIN_DEFAULT_PASSWORD:-admin}
        volumes:
            - pgadmin:/root/.pgadmin
        ports:
            - "${PGADMIN_PORT:-5050}:80"
        restart: unless-stopped

    zookeeper:
        image: debezium/zookeeper:1.3
        ports:
            - 2181:2181
            - 2888:2888
            - 3888:3888
    kafka:
        image: debezium/kafka:1.3
        ports:
            - 9092:9092
        links:
            - zookeeper
        environment:
            - ZOOKEEPER_CONNECT=zookeeper:2181
    postgres:
        image: debezium/example-postgres:1.3
        ports:
            - 5432:5432
        environment:
            - POSTGRES_USER=postgres
            - POSTGRES_PASSWORD=postgres
            - PGDATA=/data/postgres
            - POSTGRES_DB=${POSTGRES_DB:-task_engine}
    connect:
        image: debezium/connect:1.3
        ports:
            - 8083:8083
        links:
            - kafka
            - postgres
        environment:
            - BOOTSTRAP_SERVERS=kafka:9092
            - GROUP_ID=1
            - CONFIG_STORAGE_TOPIC=my_connect_configs
            - OFFSET_STORAGE_TOPIC=my_connect_offsets
            - STATUS_STORAGE_TOPIC=my_connect_statuses

volumes:
    postgres:
    pgadmin:
z4bn682m

z4bn682m1#

我在java类中做了特殊事件转换
据我所知,您没有将这个编译过的类装入debezium映像或编辑 plugin.path 包含该jar的文件
如果您已经用这些数据创建了自己的docker映像,那么您应该进行更改 image: debezium/connect:1.3 这可以解释为什么转换不可用

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