Determining topic data structure

You can use the Apache Pulsar™ pulsar-client command line client to examine the structure of Pulsar messages for a topic.

To show Apache Pulsar messages:

 bin/pulsar-client consume topic_name -s "subscription_name"

where

topic_name

Name of the Pulsar topic receiving the messages.

subscription_name

Arbitrary name for the consumer subscription.

You’ll see the message data when a message is received:

----- got message -----
key:[My key], properties:[], content:My content

in this case:

  • Key: My key

  • Content: My content