如何在kafka中为date提供字段类型支持

w51jfk4q 于 2021-06-04 发布在 Kafka

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使用debezium mongodb连接器，我成功地将我的收藏推到了Kafka，我面临的唯一问题是这个领域 date 在我的一个收藏中，格式为2019-05-14t23:25:34.703+00:00，没有被推到相同格式的主题，而是我得到了类似于1560708585175的东西。
这是我的debezium连接器命令 connect-standalone /etc/kafka/connect-standalone.properties /etc/kafka/connect-mongodb-source.properties 这是我的mongodb集合示例。

{"_id":"5cdb4e6ed767ba70593e2aa8","sender":"5cdb43db4505956efc70ba03","receiver":"5cdb43db4505956efc70ba03","receiverWalletId":"5cdb43db4505956efc70ba04","status":"succes","type":"topup","amount":200000,"totalFee":0,"createdAt":"2019-05-14T23:25:34.703Z","updatedAt":"2019-05-14T23:25:35.132Z","__v":0,"details":"none."}

这是我的Kafka主题的例子。

{"schema":{"type":"struct","fields":[{"type":"string","optional":true,"field":"sender"},{"type":"string","optional":true,"field":"receiver"},{"type":"string","optional":true,"field":"receiverWalletId"},{"type":"string","optional":true,"field":"status"},{"type":"string","optional":true,"field":"type"},{"type":"int32","optional":true,"field":"amount"},{"type":"int32","optional":true,"field":"totalFee"},{"type":"int64","optional":true,"field":"createdAt"},{"type":"int64","optional":true,"field":"updatedAt"},{"type":"int32","optional":true,"field":"__v"},{"type":"string","optional":true,"field":"from"},{"type":"string","optional":true,"field":"orderId"},{"type":"string","optional":true,"field":"id"}],"optional":false,"name":"mongo_conn.digi.transactions"},"payload":{"sender":"5cef970ca2e9c273c655483","receiver":"5cef970ca2e9c27355c483","receiverWalletId":"5cef970ca2e9c27556c484","status":"pending","type":"topup","amount":6000,"totalFee":0,"createdAt":1560708024322,"updatedAt":1560708024753,"__v":0,"from":"smt","orderId":"d7a97581-9d18-79cd-8b09-16e400a43714","id":"5d0683b8be4af834abe3cf58"}}

这是我的connect-mongodb-source.properties

name=mongodb-source-connector
connector.class=io.debezium.connector.mongodb.MongoDbConnector
mongodb.hosts=repracli/**.**.**.***27017
mongodb.name=mongo_conn
initial.sync.max.threads=1
tasks.max=1
transforms=unwrap
transforms.unwrap.type=io.debezium.connector.mongodb.transforms.UnwrapFromMongo$
transforms.unwrap.operation.header=true

mongodb apache-kafka apache-kafka-connect debezium

来源：https://stackoverflow.com/questions/56853949/how-to-have-field-type-support-for-date-in-kafka

3条答案

按热度按时间

hsvhsicv1#

debezium将数据以oplog中存储的格式进行流处理。日期看起来像unix时间戳（以毫秒为单位）。
你可以写一个smt(https://cwiki.apache.org/confluence/display/kafka/kip-66%3a+single+message+transforms+for+kafka+connect)这将操作消息并将请求的字段转换为首选的字符串表示形式。
如果你调查 org.bson.BsonDateTime 你会发现这是真的 long 价值观。

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qncylg1j2#

对于一些转换，您将需要以下内容：

transforms=unwrap,convert1,convert2
transforms.unwrap.type=io.debezium.connector.mongodb.transforms.UnwrapFromMongoDbEnvelope
transforms.unwrap.operation.header=true
transforms.convert1.type=org.apache.kafka.connect.transforms.TimestampConverter$Value
transforms.convert1.target.type=string
transforms.convert1.field=createdAt
transforms.convert1.format=yyyy-MM-dd HH:mm:ss ZZZ
transforms.convert2.type=org.apache.kafka.connect.transforms.TimestampConverter$Value
transforms.convert2.target.type=string
transforms.convert2.field= *updatedAt*
transforms.convert2.format=yyyy-MM-dd HH:mm:ss ZZZ

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nkoocmlb3#

解决了的

name=mongodb-source-connector
connector.class=io.debezium.connector.mongodb.MongoDbConnector
mongodb.hosts=repracli/**.**.**.***:27017
mongodb.name=mongo_conn
initial.sync.max.threads=1
tasks.max=1
transforms=unwrap,convert,convert2,convert3,convert4
transforms.unwrap.type=io.debezium.connector.mongodb.transforms.UnwrapFromMongoDbEnvelope
transforms.unwrap.operation.header=true
transforms.convert.type=org.apache.kafka.connect.transforms.TimestampConverter$Value
transforms.convert.target.type=string
transforms.convert.field=createdAt
transforms.convert.format=yyyy-MM-dd HH:mm:ss ZZZ
transforms.convert2.type=org.apache.kafka.connect.transforms.TimestampConverter$Value
transforms.convert2.target.type=string
transforms.convert2.field=updatedAt
transforms.convert2.format=yyyy-MM-dd HH:mm:ss ZZZ
transforms.convert3.type=org.apache.kafka.connect.transforms.TimestampConverter$Value
transforms.convert3.target.type=string
transforms.convert3.field=created_at
transforms.convert3.format=yyyy-MM-dd HH:mm:ss ZZZ
transforms.convert4.type=org.apache.kafka.connect.transforms.TimestampConverter$Value
transforms.convert4.target.type=string
transforms.convert4.field=updated_at
transforms.convert4.format=yyyy-MM-dd HH:mm:ss ZZZ

赞(0）回复(0）举报 2021-06-04

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如何在kafka中为date提供字段类型支持

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