如何在从debezium kafka connect接收的cdc事件中获取表名和数据库名

72qzrwbm  于 2021-06-06  发布在  Kafka
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设置:我在mssqlserver上启用了cdc,cdc事件通过debezium-kafka-connect(源代码)反馈给kafka。在kafka中,多个表cdc事件被路由到单个主题。
问:因为kafka主题中有多个表数据,所以我希望在cdc数据中有表名和数据库名。
我在mysql cdc中得到表名和数据库名,但在mssqlcdc中没有。
下面是sql server的debezium源连接器

curl -i -X POST -H "Accept:application/json" -H "Content-Type:application/json" localhost:8083/connectors/ -d '{
  "name": "cdc-user_profile-connector",
  "config": {
    "connector.class": "io.debezium.connector.sqlserver.SqlServerConnector",
    "tasks.max": "1",
    "database.hostname": "<<hostname>>",
    "database.port": "<<port>>",
    "database.user": "<<username>>",
    "database.password": "<<password>>",
    "database.server.name": "test",
    "database.dbname": "testDb",
    "table.whitelist": "schema01.table1,schema01.table2",
    "database.history.kafka.bootstrap.servers": "broker:9092",
    "database.history.kafka.topic": "digital.user_profile.schema.audit",
    "database.history.store.only.monitored.tables.ddl": true,
    "include.schema.changes": false,
    "event.deserialization.failure.handling.mode": "fail",
    "snapshot.mode": "initial_schema_only",
    "snapshot.locking.mode": "none",
    "transforms":"addStaticField,topicRoute",
    "transforms.addStaticField.type":"org.apache.kafka.connect.transforms.InsertField$Value",
    "transforms.addStaticField.static.field":"source_system",
    "transforms.addStaticField.static.value":"source_system_1",
    "transforms.topicRoute.type":"org.apache.kafka.connect.transforms.RegexRouter",
    "transforms.topicRoute.regex":"(.*)",
    "transforms.topicRoute.replacement":"digital.user_profile",
    "errors.tolerance": "none",
    "errors.log.enable": true,
    "errors.log.include.messages": true,
    "errors.retry.delay.max.ms": 60000,
    "errors.retry.timeout": 300000
  }
}'

我得到以下输出(演示数据)

{
  "before": {
    "profile_id": 147,
    "email_address": "test@gmail.com"
  },
  "after": {
    "profile_id": 147,
    "email_address": "test_modified@gmail.com"
  },
  "source": {
    "version": "0.9.4.Final",
    "connector": "sqlserver",
    "name": "test",
    "ts_ms": 1556723528917,
    "change_lsn": "0007cbe5:0000b98c:0002",
    "commit_lsn": "0007cbe5:0000b98c:0003",
    "snapshot": false
  },
  "op": "u",
  "ts_ms": 1556748731417,
  "source_system": "source_system_1"
}

我的要求如下

{
  "before": {
    "profile_id": 147,
    "email_address": "test@gmail.com"
  },
  "after": {
    "profile_id": 147,
    "email_address": "test_modified@gmail.com"
  },
  "source": {
    "version": "0.9.4.Final",
    "connector": "sqlserver",
    "name": "test",
    "ts_ms": 1556723528917,
    "change_lsn": "0007cbe5:0000b98c:0002",
    "commit_lsn": "0007cbe5:0000b98c:0003",
    "snapshot": false,
    "db": "testDb",
    "table": "table1/table2"
  },
  "op": "u",
  "ts_ms": 1556748731417,
  "source_system": "source_system_1"
}
kmpatx3s

kmpatx3s1#

这是计划的一部分https://issues.jboss.org/browse/dbz-875 问题

pokxtpni

pokxtpni2#

debezium kafka connect通常将每个表中的数据放在单独的主题中,主题名称的格式为hostname.database.table。我们通常使用主题名来区分源表和数据库名。
如果要将所有表中的数据手动放到一个主题中,那么可能还需要手动添加表和数据库名称。

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