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kafka-smt-jsonpath-tools

Installation

Download the jar file from the release page and copy it into a directory that is under one of the plugin.path. This doccument would help you.

PayloadBasisRouter

SMT for topic routing based on the field in a message.

  • You can use the field values in a Kafka message to specify the name of the topic to route to.
  • Using JsonPath-like expression.

Example:

{
  ...

  "transforms": "route",
  "transforms.route.type": "io.github.rerorero.kafka.smt.PayloadBasisRouter$Value",
  "transforms.route.replacement": "topic-{$.user.name}"
}
Config Description
replacement Topic name to route the message.
Config Description
type Select io.github.rerorero.kafka.smt.PayloadBasisRouter$Value or
io.github.rerorero.kafka.smt.PayloadBasisRouter$Key based on
which field do you want to use for replacement.
replacement Topic name to route the message. It can include one or more fields in Kafka message value or key. Fields are specified as JaonPath string enclosed in {} like {$.user.name}.

Json Path expression

Not all grammers are supported. Please see here for the current limitations: rerorero/kafka-connect-jsonpath-accessor#json-path-expressions

Build and Deployment

Build and test:

gradlew build test

Run integration test:

gradlew build shadowJar
cd e2e
./test.sh
echo $? # should exit with 0