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Consuming Kafka Messages with Confluent REST Proxy
The Confluent REST Proxy provides a "RESTful interface" on top of Kafka, allowing you to produce and consume messages using simple HTTP requests. In this lab, you will have the opportunity to interact with the REST proxy by consuming some existing messages. This will give you some hands-on experience with the requests necessary for consuming Kafka data using REST.

Lab Info
Table of Contents
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Challenge
Provide the Number of Apples Sold in the Last Week
- Create a new consumer and
consumer_instance
:
curl -X POST -H "Content-Type: application/vnd.kafka.v2+json" --data '{"name": "sales_consumer_instance", "format": "json", "auto.offset.reset": "earliest"}' http://localhost:8082/consumers/sales_json_consumer
- Subscribe the consumer to the
weekly_sales
topic:
curl -X POST -H "Content-Type: application/vnd.kafka.v2+json" --data '{"topics":["weekly_sales"]}' http://localhost:8082/consumers/sales_json_consumer/instances/sales_consumer_instance/subscription
- Consume the messages:
curl -X GET -H "Accept: application/vnd.kafka.json.v2+json" http://localhost:8082/consumers/sales_json_consumer/instances/sales_consumer_instance/records
- Locate the latest record with a key of
apples
and copy its value. - Edit the output file:
vi /home/cloud_user/output/apple_sales.txt
- Paste in the value from the latest
apples
record and save the file.
- Create a new consumer and
-
Challenge
Provide the Current Quarterly Balance for Product Purchases
- Create a new consumer and
consumer_instance
:
curl -X POST -H "Content-Type: application/vnd.kafka.v2+json" --data '{"name": "balance_consumer_instance", "format": "json", "auto.offset.reset": "earliest"}' http://localhost:8082/consumers/balance_json_consumer
- Subscribe the consumer to the
quarterly_purchases
topic:
curl -X POST -H "Content-Type: application/vnd.kafka.v2+json" --data '{"topics":["quarterly_purchases"]}' http://localhost:8082/consumers/balance_json_consumer/instances/balance_consumer_instance/subscription
- Consume the messages:
curl -X GET -H "Accept: application/vnd.kafka.json.v2+json" http://localhost:8082/consumers/balance_json_consumer/instances/balance_consumer_instance/records
- Locate the latest record and copy its value.
- Edit the output file:
vi /home/cloud_user/output/quarterly_balance.txt
- Paste in the value from the latest record and save the file.
- Create a new consumer and
About the author
Real skill practice before real-world application
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